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(c) Marek Trokenheim

1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5

(...)

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

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

5.a4 a6 6.c4 (--> 5.c4 a6 6.a4).

5.Nc3 b6 6.Nf3 Bb7 (6...Bd6 7.d4+=) 7.Be2 Be7 (7...Bd6 8.d4=) 8.0–0 0–0 9.d3 (9.d4 c4=) 9...a5 (9...a6 10.ba6 Ra6 11.Nb5=) 10.d4 (10.Na4 Nbd7=) 10...c4 11.e4 Ne4 12.Ne4 de4 13.Ne5 Bd5 (13...Qc7 14.Nc4 Nd7 15.Qd2=) 14.Nc4= Bc4 (14...a4 15.Ne3=) 15.Bc4 Nd7 (15...Qc7 16.Qe2 Ra7 17.a4+=) 16.d5+= ed5 (16...Rc8!? 17.Qe2 ed5 18.Bd5 Bf6 19.Bf6 Nf6=) 17.Bd5+/– (17.Qd5?! Bf6 18.Rad1 Bb2 19.Qd7 Qe8+=) 17...Rc8 18.Be4 g6 (18...Bf6 19.c3!+/–) 19.Qf3 (better is 19.Re1+–) 19...Nf6? (better is 19...Bf6 20.Bf6 Qf6+/–) 20.Rad1+– Nd7 (20...Qe8 21.Bc6 (21.Bf6?! Bf6 22.Rfe1 Rd8+–) 21...Rc6 22.bc6+–) 21.Bc6 Rc6 (21...Rc7+–) 22.bc6 (22.bc6 Ne5 23.Be5+– (23.Rd8?! Nf3 24.gf3 Rd8+=)) 1–0. Wall,Bill – Jeux, internet, 2005.

5.Nc3 e5 6.Qf3 +=.

5.c4 a5 6.Nf3 b6 7.Be2 Bb7 8.0–0 Nbd7 9.d4 Be7 10.Nbd2 0–0 11.Qc2 Ne4 (11...Rc8 12.Rac1=) 12.Bd3 (12.cd5 Nd2 13.Nd2 ed5 14.dc5 Nc5=) 12...Ndf6 (12...f5 13.Be2+=) 13.Rfc1 (13.Ne5 cd4 14.Bd4 Bd6=) 13...Nd2= 14.Nd2 Ne4 (better is 14...Rc8=) 15.Ne4+/– de4 16.Be4 Be4 17.Qe4 Bf6 18.a4 (18.Rab1 Rc8+/–) 18...Qc7 19.Rab1 Rad8 (19...Rac8 20.Ba3 Be7 21.g3+/–) 20.Ba3 (better is 20.Qc6!? Qc6 21.bc6+–) 20...Be7+/– 21.d5 (21.g3!?+/–) 21...ed5+= 22.cd5 Rfe8 23.Qc4 (23.Rc4 Bd6 24.Qh4 f5=) 23...Bd6 24.g3 Re5 (24...f5!?+=) 25.Bb2+/– Rg5 26.f4 Rg6 27.Rf1 h5 28.Rf3 Re8 (better is 28...h4+/–) 29.Rbf1?? (better is 29.e4+–) 29...f5+= 30.Bc1 (30.Be5 Be5 31.fe5 Qe5=) 30...Re4= 31.Qc2 Qf7 32.Rd1 Bc7 33.Bb2 Bd6 ½–½. Alessandro,Sergio (1680) – Gherghel Butan,Mircea (1680), San Bernardino SUI, Open, 2014.

5.c4 Ne4 6.Nc3 f5 7.Ne4 fe4 8.Qh5 g6 9.Qh3 e5 10.Qg3 Rg8 (better is 10...Bg7!? 11.Be5 Qe7 12.Bg7 Qg7+/–) 11.Qe5+– Qe7 12.Qd5 Nd7?? (12...Qe6+–) 13.Qg8 (13…Nb6 14.Qh8+–) 1–0. Bonetti,Shane – nimzoman, ICC, 2002.

5.d3 Bd7 6.a4 a6 7.ba6 Ra6 8.d4 c4 9.c3 Bd6 10.Be2 b5 11.ab5 Ra1 12.Ba1 Bb5 13.Nd2 0–0 14.Ngf3 Nc6 15.0–0 Qa5 16.Qc2 Ra8 17.Bb2 Ba4 18.Qc1 Qb5 19.Ba3 Ba3 20.Qa3 Qb7 21.Rb1 Bb3 22.Qb2 Rb8 23.Ne1 Na5 24.f3 (< 24.Nb3 Qb3 25.Qb3 cb3=+) 24...Kf8?? (24...Qc7 25.f4=) 25.g4?? (better is 25.Qa3 Kg8 26.Qa5+–) 25...Ke8 (better is 25...Qc7!?=+) 26.g5 (< 26.Nb3 Qb3 27.Qb3 cb3=+) 26...Nd7 27.f4 (< 27.Nb3 Qb3 28.Qb3 cb3=+) 27...f6 28.h4 (28.Ra1 Nc6+=) 28...e5 29.Bf3 (< 29.Nb3 Qb3 (< 29...Nb3 30.fe5 fe5 31.Bg4=) 30.Qb3 cb3=+) 29...ed4 30.ed4 fg5 31.hg5 Nf8 32.f5 Nd7? (32...Qc8 33.Ng2 Qd7+–) 33.Ng2 Qc6? (33...Nb6 34.Qa3 (34.Nb3?! cb3 35.Nf4 Qc7 36.Qe2 Qe7+–) 34...Nc6 35.Nb3 cb3 36.Rb3+–) 34.Nf4 (34.Qa3 Ba4 35.Rb8 Nb8+–) 34...Nb6? (34...Qd6 35.Re1 Kd8 36.Ne6 Ke8 37.Bd5 (37.Ng7?! Kf7 38.f6 Qg3 39.Kf1 Bd1 40.Re7 Kg6+–) 37...Qg3 38.Kf1 Qh3 39.Bg2 Qf5 40.Kg1+–) 35.Ne6 (35.Qa3 Qa8+–) 35...Kf7?? (better is 35...Qd6 36.Nb3 Nb3 37.Ng7 Kd7+–) 36.Nc5 (better is 36.Nb3 Nb3 37.Qh2+–) 36...h6 (36...Kg8!?+=) 37.g6+/– Kf6? (37...Kg8 38.Qa3 Ra8+–) 38.Ncb3?? (38.Nde4 de4 39.Ne4 Ke7 40.Qa3 Kd8 41.Ng5 (41.Qa5?! Qd5 42.Qc5 Qc5 43.Nc5 Nd7+–) 41...hg5 42.Bc6 Nc6 43.Qd6 Nd7 44.Qc6+–) 38...Nb3? (better is 38...cb3 39.Re1 Re8+=) 39.Nb3+– cb3 40.Qb3?? (40.Qh2 Re8 41.Rb3+–) 40...Kf5?? (better is 40...Nd7 41.Qa2 Rb1 42.Qb1 Qc3–/+) 41.Qc2 Kg5? (41...Kf6 42.Qh2 Rb7 43.Rf1+–) 42.Qg2 Kf6 43.Rf1 Ke7 44.Qe2 (44.Bd5 Nd5 45.Rf7 Kd8 46.Rf8 Kc7 47.Qg3 Qd6 48.Qd6 Kd6 49.Rb8 Nc3 50.Rb7 Ne2 51.Kf2+–) 44...Kf8?? (better is 44...Qe6+/–) 45.Bd5 1–0. MasterofDisaster – DieBushDie, Live Game Caissa's Web, 2004.

5.d3 Be7 6.Nf3 0–0 7.Be2 Bd7 8.0–0 (8.c4!?=) 8...Bb5=+ 9.a4 Ba6 10.Na3 Nc6 11.Nb5 b6 (11...Qa5 12.Qd2=+) 12.h3 (12.Qb1!?=+) 12...Bb7 13.c3 (13.Qd2 a6 14.Na3 Qd6–/+) 13...a6–+ 14.Na3 Qc7 15.g3 (15.c4!?–/+) 15...Bd6 16.Nc2 (16.Re1 Rfd8–+) 16...Bg3 (16...e5 17.Nd2–+) 17.Kg2 (better is 17.fg3 Qg3 18.Kh1 Qh3 19.Kg1 Qg3 20.Kh1–/+) 17...Bd6 18.d4 c4 19.Rg1 a5 20.Kf1 Ne4 21.Ng5 Ng5 22.Rg5 f6 23.Rg4 e5 24.de5 fe5 25.Qd5 Kh8 26.Bf3?? (26.Qc4 Bc8 27.Rg5 Be7–+) 26...Rab8 (better is 26...Nd8 27.Rc4 Qd7 28.Bg4 Bd5 29.Bd7 Bc4 30.Kg1–+) 27.Rd1?! (27.Rc4 Bc5 28.Bg2–+) 27...Nd4! 28.Qb7 (28.Nd4 Bd5) 28...Rb7 (28...Qb7?! 29.Bb7 Nc2 30.Ke2 Rb7 31.Rd6=+; 28...Nc2 29.Qc7 Bc7 30.Ke2+– (30.Rc4 Rf3 31.Ke2 Rf7–/+)) 29.cd4 Rf3 30.de5 Be7 31.Nd4 Rf8 (better is 31...Qd7 32.e6 Qa4 33.Rc1–+) 32.Ne6 Qc8 (better is 32...Qc6 33.Nf8 Qa4–+) 33.Ng7 (33.Nf8 b5 (< 33...Qf8 34.e6–+) 34.ab5 Rb5–+ (< 34...Qf8 35.e6 Rb5 36.Bg7 Qg7 37.Rg7 Kg7 38.Rc1–+)) 33...Qg4 (better is 33...c3 34.Ba1 Rg8–+) 34.hg4 Kg7 35.e6 Bf6 36.Bf6 Kf6 37.Rd4 (37.e7 Re7 38.Ke2 Rc8–+) 37...Ke6 (better is 37...Rc8!? 38.Ke2–+) 38.Rc4 b5 39.ab5 Rb5 40.Ra4 (40.f4 h5 41.gh5 Rh5 42.Re4 Kf6–+) 40...Ra8 41.f4 Rb4 42.Ra3 a4 43.f5 (43.Ke2 Rb3 44.Ra1 a3 45.f5 Kf6–+) 43...Kf6 44.Rd3 (44.Ke1–+) 44...a3 45.Rd6 Kg5 46.f6 a2 47.f7 a1Q 48.Ke2 Qh1 49.f8Q Rf8 50.Kd3 Qe4 51.Ke2 Rb2 52.Rd2 Rf2! 53.Kf2 Rd2 54.Kf1 Qb1# 0–1. MasterofDisaster – han8, Live Game Caissa's Web, 2004.

5.d4 b6 6.c4 (--> 5.c4 b6 6.d4).

5.d4 Nbd7 6.Nf3 c4 (6...cd4 7.Qd4 (7.Bd4 Qc7 8.Nbd2 e5 9.Bb2 Bb4 10.c3 Bc5 11.c4 e4) 7...Bc5 (7...Bd6 8.Be2 e5 9.Qd2 0–0 10.0–0 Qc7 11.Qc3 Nc5) 8.Qf4+= (8.Qh4 Be7 9.Qd4 Bd6 10.Be2 e5 11.Qd2 0–0) 8...0–0 9.Nbd2 Qb6 10.Bd3 a6 11.Bf6 Nf6; 6...Qc7 A) 7.c4 cd4 8.Qd4 e5 9.Qh4 Bb4 10.Nbd2 Ne4 11.a3 Ba5; B) 7.Nbd2 Bd6 (7...c4 8.Bc3 Bd6 9.Be2 b6 10.0–0 0–0 11.a4 a6; 7...cd4 8.ed4 Nb6 9.a4 Bb4 10.Be2 Ne4 11.0–0 Nc3) 8.c4 0–0 9.Rc1 a6 10.ba6 ba6 11.cd5 ed5; C) 7.Be2 cd4 (7...Bd6 8.0–0 0–0 9.Nc3 cd4 10.Qd4 Nc5 11.h3 h6) 8.ed4 Bd6 9.0–0 0–0 10.Nbd2 Ne4 11.Bd3 Nc3; D) 7.Nc3 a5 (7...cd4 8.Qd4 Bc5 9.Qd2 0–0 10.Be2 Bd6 11.0–0 Nc5; 7...Bd6 8.Be2 cd4 9.Qd4 e5 10.Qd2 Nb6 11.0–0 0–0) 8.Be2 cd4 9.Qd4 Bc5 10.Qd3 Nb6 11.Nd2 a4; 6...Qa5 7.Qd2 Qc7 8.Nc3 Bd6 9.Bd3 cd4 10.ed4 0–0 11.0–0 h6; 6...Bd6 A) 7.c4 0–0 (7...cd4 8.Qd4 0–0 9.Nc3 Bc5 10.Qd2 Nb6 11.cd5 ed5) 8.Nc3 Qa5 9.Rc1 a6 10.ba6 b6 11.Nd2 Qb4; B) 7.Nc3 cd4 (7...0–0 8.Be2 cd4 9.Qd4 e5 10.Qd1 Nb6 11.0–0 Qc7) 8.ed4 0–0 9.Be2 Qc7 10.0–0 Nb6 11.Ne5 Be5; C) 7.Be2 cd4 (7...0–0 8.0–0 Qc7 9.Nbd2 cd4 10.ed4 Ne4 11.Bd3 Nc3; 7...Qc7 8.Nbd2 cd4 9.ed4 0–0 10.0–0 Ne4 11.Bd3 Nc3; 7...Qa5 8.Qd2 Qc7 9.Nc3 cd4 10.Nd4 Nc5 11.f4 Nce4) 8.Qd4 0–0 9.0–0 e5 10.Qh4 e4 11.Bf6 Nf6) 7.a4 (7.Nc3 a6 8.ba6 Ra6 9.a3 Bd6 10.Be2 Qa5 11.Qd2 Rb6) 7...a6 (7...Qc7 8.Be2 Ne4 9.c3 Bd6 10.Nbd2 Ndf6 11.Ne4 Ne4; 7...Bb4 8.c3 Bd6 9.Nbd2 a6 10.Be2 ab5 11.ab5 Ra5; 7...Ne4 8.c3 Bd6 9.Nbd2 Nd2 10.Qd2 0–0 11.Qc2 e5; 7...Bd6 8.Be2 Ne4 9.0–0 Qa5 10.g3 0–0 11.Nbd2 Nc3) 8.ba6 Ra6 (8...Qb6 9.Qc1+= (9.Ra2 Bb4 10.c3 Bd6 11.Be2 0–0) 9...Ra6 10.Be2 Bb4 11.c3 Bd6) 9.Be2 (9.Nbd2 Qa5 10.c3 Bd6 11.Qc2 Nb6) 9...Qa5 (9...Ne4 10.0–0+= (10.c3 Bd6 11.Nbd2 Ndf6) 10...Rb6 11.Ba3 Ba3; 9...Qb6 10.Ra2 Qa5 11.Nbd2 Bd6) 10.Bc3 (10.c3 Nb6+= (10...Bd6 11.0–0 Ne4) 11.0–0 Bd6) 10...Bb4 11.Qd2 (11.Bb4 Qb4) 11...Ne4 12.Bb4 Qb6 (worse is 12...Nd2 13.Ba5 Nf3 14.Bf3 Ra5 15.Nc3=) 13.Qc1 (13.Ba5 Ra5 14.Qc1 0–0+=) 13...Qb4–/+ 14.c3 Qa5 15.0–0 0–0 16.Nfd2 Nd2 17.Nd2 Nb6 18.Nf3 (18.Bf3 Na4 19.Ra3 b5–/+) 18...f6 (18...Na4 19.Bd1 Bd7 20.Ne5–/+) 19.e4+= Na4 20.Bd1 (20.Ra3 b5 21.e5 b4 22.cb4 Qb4 23.ef6 gf6+=) 20...b5–/+ 21.Ba4 (21.ed5!? ed5 22.Bc2–/+) 21...ba4 22.e5 f5 0–1. Maly,Guenther (1740) – Hahner,Anton (2365), RSS7E pioneer–9, 2009.

5.Be2 a6 6.a4 Bd6 7.Nf3 0–0 8.0–0 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0–0 10.Be2 Nbd7 11.0–0).

5.Be2 Nbd7 6.Nf3 Bd6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2).

5.Ne2 Bd6 6.Ng3 0–0 7.c4 Nbd7 8.Nc3 b6 (8...Nb6 9.cd5 ed5 10.Be2=+) 9.Be2 Bb7 10.Bf3? (better is 10.cd5 Nd5 11.0–0=) 10...Ne5–+ 11.cd5 ed5 (better is 11...Nd3!? 12.Ke2 Nb2–/+) 12.0–0=+ Nd3 13.Qc2 Nb2 14.Qb2 Re8 15.Nce2 Ne4 16.Nf5 Bf8 17.Rac1 g6 18.Nfg3 ½–½. Otte,Marco – Stallinga,Hein, Wag.Intcomp, 1997.

5.e3 Bd6 6.c4 b6 7.d3 Bb7 8.Nbd2 0–0 9.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.d3 b6 9.Nbd2 Bb7).

5.Qf3 a6 6.ba6 Na6 7.Bf6 Qf6 8.Bb5 Kd8 9.Qf6 gf6 10.Nc3 Nb4 11.Kd1 Rg8 12.g3 d4 13.ed4 cd4 14.Nce2 e5 15.Nf3 Be6 16.c3 (16.Rg1 Na2 17.Rb1 Bd5–+) 16...Bb3! 17.Kc1 (17.ab3 Ra1 Pinning (17...Ra1 Deflection)) 17...Bd5 18.a3? (18.cb4 Bf3 19.Rd1–+) 18...Bf3 19.Re1 dc3 20.dc3 (20.Nc3 Nd5–+) 20...Na6 21.Rd1 Kc8 22.Rd7 (22.Kd2–+) 22...Be2 23.Rd5 (23.Rb7 Kb7 24.Be2 Nc5–+) 23...Nc7 24.Bd7 Kb8 25.Rd2 Bh6 26.Kc2 (26.f4 ef4 27.Kc2 f3 28.Re2 fe2–+) 26...Bd2 27.Kd2 Bb5 28.Bf5 Rd8 29.Kc2 Ba4 30.Kb2 Rd2 31.Kb1 Ra6 32.Ra2 (32.Bg4 Rc2 33.Be6 Rd6 34.Bb3 Bb3 35.g4 Rd1) 32...Rd1 33.Kb2 Rb6 0–1. omaini (1955) – pcmvr, net–chess.com, 2015.

5.Qf3 b6 6.c4 (6.Bf6 Qf6 7.Qf6 gf6=) 6...Bb7 7.Bf6 Qf6 8.Qf6 gf6 9.cd5 Bd5 10.Nc3 Bb7 11.Nge2 Bg7 (11...a6 12.Ng3=) 12.Rc1 (12.d4 Nd7=) 12...Nd7 (12...f5 13.d4 Nd7 14.Rd1=) 13.d4 (13.Ng3 Rg8=) 13...f5 14.Na4 (14.dc5 bc5 15.Nf4 Rg8=) 14...cd4 (14...Rc8 15.Nf4+=) 15.Rc7 (15.Nd4 Bd5=) 15...Rb8 (15...Bd5 16.Nd4 Ba2 17.Nc3 Bd4 18.ed4+=) 16.Nd4= Bd4 (16...Ke7 17.Nc6 Kd6 18.Rd7 Kd7 19.Nb8 Rb8 20.Bd3–/+) 17.ed4 Kd8 (17...Ke7 18.a3=) 18.Rc3 Nf6 19.Nb2 Nd5 20.Ra3 Ra8 21.Nc4 Ke7 22.Ne5 Rhc8 23.Kd2 Nb4 (23...Nf4 24.Rg1=) 24.Nc4 (24.Ra4 Nd5=) 24...Rc7 (24...h6 25.Rg1=) 25.Ra4 Nd5 26.f3 f6 (26...a6 27.ba6 Ra6 28.Ra6 Ba6 29.Nb6 Nb6 30.Ba6+=) 27.Bd3 (27.g3 Rd7=) 27...Nf4 28.Re1 (better is 28.Ne3!?=) 28...Ng2–/+ 29.Rg1 Bf3–+ 30.Bf1 Rg8 31.Ne3? Ne3 32.Rg8 Nf1 33.Ke1 Nh2 34.Ra7 Ra7 35.Rg7 A double attack 35...Kd6 36.Ra7 h6 37.Rf7 Ng4 38.Rf8 Bd5 39.Rc8 f4 40.Rc2 f3 41.a3 f2 (41...f2 42.Rf2 Nf2 43.Kf2 Bc4–+) 0–1. Stobbe,Klaus – Van Dorsselaer,Adrianus, Bayern–ch Germany, 2004.

5.Qf3 c4 6.Be2 Bd7 7.a4 a6 8.Qf4 ab5 9.ab5 Ra1 10.Ba1 Be7 (better is 10...Bb5!? 11.Bf6 gf6–/+) 11.Be5 0–0 12.Nf3 (better is 12.Nc3!?+=) 12...Bb5+= 13.Bb8? (better is 13.Nc3!? Bd7 14.e4+=) 13...Qb8–+ 14.Qb8 Rb8 15.0–0 Ba4 16.Nc3 (16.Rc1 Bb4–+) 16...Bc2 17.Nd4 e5?? (better is 17...Bg6–+) 18.Nf5?? (better is 18.Nc2 b5 19.Bf3=) 18...Bb4 (18...Bf5 19.g4 Be6 20.Rb1–+) 19.Ne7 (19.g4–+) 19...Be7 20.Rc1 Bg6 21.Bf3 (21.g4 Rd8–+) 21...e4 22.Bd1 b5 23.Na2 b4 24.Rb1 b3 25.Nc3 Bb4 26.Kf1 (26.Be2 d4! 27.Bc4 dc3 28.dc3 Bc3 29.Rb3 Rb3 30.Bb3 Kf8–+) 26...Bc3 (better is 26...d4!? 27.Na4 Bf5 28.h3–+) 27.dc3 Nd7 28.Bg4 (28.Ra1 Nc5 29.Ke1 Nd3 30.Kd2 Nf2–+) 28...Nc5 29.f3 (29.Ke1 Ra8 30.Bd1 Ra3–+) 29...f5 (29...ef3 30.Rb2 Na4 31.Rf2 fg2 32.Rg2–+) 30.Bh3 ef3 31.gf3 Na4 Black intends b2 32.Kf2 Nc3 33.Rc1 b2 (33...b2 34.Rg1 Ra8–+) 0–1. omaini (1955) – preethan (2135), net–chess.com, 2015.

5.Qf3 Be7 6.Be2 Qc7 (6...c4 7.Bd4=) 7.Nh3 Nbd7 (7...0–0 8.Nf4=) 8.Nf4 0–0 9.c4 (9.0–0 Ne5 10.Qh3 Rd8=) 9...Ne5 (9...dc4 10.Bc4 Nb6 11.Na3=+) 10.Be5 Qe5 11.Nc3 d4 12.Nd3 Qc7 13.Ne4 (13…a6 14.ed4 cd4 15.Nf6 Bf6 16.Rc1=+). Kusmierek,Jozef – Smith, corr 3GMM–20, 1995.

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

5.f4 g6 6.Nf3 Bg7 7.a4 a5 8.Be2 0–0 9.0–0 Nbd7 10.Ne5 b6 11.c4 Bb7 12.d4 Ne4 (12...dc4 13.Nc6 Qc7 14.Bc4 Bc6 15.bc6 Qc6 16.Bb5=+) 13.Nd2 (13.Nc3 Ndf6=) 13...f5 (13...Nd2 14.Qd2 Ne5 15.de5 dc4 16.Qc2=) 14.Ne4 fe4 15.Bg4 Ne5 16.fe5 Rf1 17.Qf1 Qd7 18.dc5 bc5 19.Qe1 (19.cd5 Bd5 20.Qe1 Qe7+=) 19...h5 (19...d4 20.Qg3 d3 21.Qh3=) 20.Bh3 (20.Be2!?+=) 20...g5= 21.g3 g4 22.Bg2 Qc7 23.Qc3 Rd8 24.Rd1 dc4 25.Rd8 Qd8 26.Qc4 Qd1 (26...Qd2!?=) 27.Bf1+/– Bd5 28.Qc5 Qa4 29.b6 Qb3 30.Bd4 Kh7 (30...a4 31.Qc8 Kh7 32.Qe8+/–) 31.Qb5 (31.Qe7!?+/–) 31...Qb5= 32.Bb5 Bb7 33.Bd7 Kg6 34.Be6 Bf8 35.Bd7 (35...Be7 36.Bc3+/–) 1–0. Pietrzak,Janusz – Prill,G, corr ICCF EU–M–GT–27, 1991.

5.f4 h6 =.

5.g3 Be7 6.Bg2 b6 (6...a6 7.a4–/+) 7.Ne2 Bb7 8.0–0 0–0 9.c4 dc4?? (better is 9...a6=) 10.Bb7+– Qd7 (10...Nbd7 11.Ba8 Qa8+–) 11.Ba8 Qb5 12.Bc3 (12.Qc1 Qa6+–) 12...Na6 13.a4 Qd7 (13...Qb3 14.Bg2 Rd8+–) 14.a5 (better is 14.Bg2+–) 14...Ra8 15.ab6 ab6 16.d4 (16.Nf4 b5+–) 16...cd4 (16...cd3 17.Nf4+–) 17.Nd4 (17.Qd4 Qc6 18.Qe5 Bd6+–) 17...Bc5 (17...b5 18.Qf3 Nd5 19.Nf5+–) 18.Kg2 (18.Na3 Nd5 19.Nab5 Qe8+–) 18...Ne4 (18...b5 19.Qf3 Nd5+–) 19.Qf3 f5 20.Nd2 Qb7 (20...Bd4 21.Ne4 Qd5 22.Bd4 (< 22.ed4 fe4 23.Qe2 Nc7+–) 22...fe4 23.Qg4+–) 21.Ne6 (21.Nc4?! Qd5 22.Nb2 Nc3 23.Ne6 Qf3 24.Kf3 Kf7 25.Nc5 bc5+–) 21...Nd6 (21...Bf8+–) 22.Qb7 Nb7 23.Ng7 (23.Nc4!? Kf7 24.Nc5 Nbc5+–) 23...b5 (23...Nd6 24.Rfb1+–) 24.Nf5 b4 25.Be5 (25.Bd4 c3 26.Nb3 Bf8+–) 25...c3 26.Nb3 Bf8 (26...Kf7 27.f4 Bf8 28.Ra4+–) 27.Rfd1 c2 (27...Kf7 28.Rd7 Ke6 29.Rb7 Kf5 30.f4+–) 28.Rdc1 Ra7 (28...Re8 29.Bd4 Nac5 30.Nc5 Nc5 31.Rc2 Ne6+–) 29.Rc2 Kf7 30.Rc6 (30...Nbc5 31.Rf6 Ke8 32.Rf8 Kf8 33.Nc5+–) 1–0. MasterofDisaster – Putte5, Live Game Caissa's Web, 2004.

5.g4 Nbd7 6.h4 Ne4 7.Nc3 Nd6 8.a4 Be7 9.g5 h6 10.Qh5 d4 11.Nce2 g6 12.Qf3 Nc4 13.ed4 hg5 14.Qc3 Nb2 15.dc5 Bf6 16.d4 Na4 (better is 16...Nc5!? 17.Qb2 Qa5 18.Nc3 Ne4–+ (18...gh4?! 19.Nge2 Ne4 20.Rd1–+)) 17.Ra4–/+ gh4 18.Bg2 0–0 19.c6 Nb6 20.cb7? (better is 20.Ra2 Nd5 21.cb7 Bb7 22.Qb3=+) 20...Bb7!–+ 21.Bb7 Na4 22.Qb4 Rb8 23.Bc6 Nb6 24.Rh3 Nd5 25.Qb2 Ne7 26.Bh1 Qa5 27.Kf1 (27.c3 Qb5 (< 27...Rb5 28.Qc1–+) 28.Qb5 Rb5–+) 27...Rb5 (< 27...Qb5 28.Rb3 Qe8 29.c3–+) 28.Qc1 Rfb8 0–1. Carstensen,Jan_Christian – Prosch,Sebastian (1760), Schleswig Holstein–chA U16, 2000.

5.h3 Be7 6.Be2 0–0 7.Nf3 Bd7 8.a4 a6 9.ba6 ba6 10.0–0 Nc6 11.d4 c4 12.c3 Rb8 13.Ba3 Ba3 14.Na3 Qb6 (14...Qa5 15.Qc2–/+) 15.Rb1=+ Qa5 16.Ne5? (16.Qc2!?=+) 16...Ne5 (16...Qc3 17.Qc1 Qc1 18.Rfc1 Ne5 19.de5–+) 17.de5–/+ Ne4 (better is 17...Ba4 18.Qd4 Nd7–/+) 18.Rc1? (better is 18.Nc4 Qc3 19.Nb6=) 18...Nc3–+ 19.Qc2 Ne2 20.Qe2 Qa4 21.Ra1 Rb3 (21...Qb3 22.Nc2–+) 22.Nc2 Qb5 23.Nd4 Rb2 24.Nb5 Re2 25.Nd6? (better is 25.Nd4 Rb2 26.Ra6–+) 25...Bb5 26.Rab1 Rb8 27.f4 (27.Rb4 c3 28.Rc1–+) 27...c3 28.Rfc1 c2 (better is 28...Re3 29.Rb4 Rd3–+) 29.Rb2 Re3 30.Rbc2 (30.h4–+) 30...g6 (better is 30...g5!? 31.Rc7 gf4 32.Nf7 Kg7 33.Nd8 Kg6 34.Ne6 Kf5–+ (34...Re5?! 35.Nf4 Kf5 36.g3–/+)) 31.Rc8 Rc8 32.Rc8 Kg7 33.Rc7 Re1 (33...g5!?–/+) 34.Kf2 Rb1 (34...Rf1 35.Ke3 g5 36.Rf7 Kg8 37.Rf6 gf4 38.Rf4 Rf4 39.Kf4–+) 35.Rf7 (better is 35.Nf7 Rb2 36.Ke3 Rb3 37.Kd2=) 35...Kh6 (better is 35...Kg8!?=+) 36.g4+/– g5 37.Rf6 (37.f5 Rb2 38.Ke3 Re2 39.Kd4 Rd2 40.Kc3 Rd3 41.Kb4 Re3+–) 37...Kg7+= 38.Re6 (better is 38.fg5!? Rb3 39.Kg2+= (39.Nb5?! ab5 40.Kg2 Re3 41.Re6 b4=)) 38...gf4= 39.Nf5 Kf7 40.Rf6 Ke8 41.Nd6 (41.Rh6 Rf1 42.Kg2 f3 43.Kg3 Bd3=) 41...Ke7 (41...Kd7 42.Nf5=+) 42.Rf4 (42.Nf5!? Kd8 43.e6=) 42...Ke6–/+ 43.Nb5 ab5 44.Rf5 Rb3 (44...b4 45.Ke3 Re1 46.Kd3–/+) 45.h4 (45.Rh5 b4=+) 45...Rb4 46.Kf3 Rb3 (46...Rc4!?=+) 47.Kf4= Rb1 (47...Rb4 48.Kf3 Rc4=+) 48.Rf6+/– Ke7 49.Kg5 (49.Rh6 Rf1 50.Ke3 b4+/–) 49...Re1= 50.Kf5?? (better is 50.Rh6=) 50...d4?? (better is 50...Rf1 51.Kg5 Rf6 52.ef6 Kf7–+) 51.Rd6 (51.Rh6 Rf1 52.Ke4 Rf7+–) 51...Rd1 (51...Rf1 52.Kg5+/–) 52.Ke4 (52.Rh6 Rf1 53.Ke4 Rf7+–) 52...d3 (52...Rg1 53.Kf4+= (53.Kd4?! Rg4 54.Kc5 Rh4=)) 53.Rd3+/– Rd3 54.Kd3 Ke6 55.Ke4 (55...b4 56.Kd4=) 1–0. MasterofDisaster – gotha, Live Game Caissa's Web, 2004.

5.d4 c4

6.Nc3 Qa5 7.Nge2 Bb4 8.f3 Qb5 9.Kf2 Qc6 10.a4 b6 11.Ba3 Ba3 12.Ra3 a6 13.Ng3 h5 14.h4 Qd6 15.Nb1 Nc6 16.c3 Rh6 17.Ne2 e5 18.de5 Ne5 19.Nd4 Nfg4 20.fg4 Ng4 21.Kg1 Qg3 22.Qf3 Qe1 23.Ne2 Rf6 24.Nf4 Ra7 25.Ra1 Re7 26.Qe2 Re3 27.Qe1 Re1 28.g3 d4 29.cd4 Bb7 30.d5 Bd5 31.Nd5 Rff1 0–1. Wich – Hakshenas, St. Ingbert 1988.

6 Nf3 Qa5 7 Nc3 Bb4 8 Qd2 Ne4 9 Qc1 Bc3 10 Bc3 Qc3 11 Ke2 Qb4 12 Rb1 Nc3 13 Kd2 Nb1 0–1. NN – Ram, corr 1988.

5.Qf3 Nbd7

6.c4 Bd6 7.cd5 ed5 8.Qf5 0–0 9.Nf3 Ne5 10.Qc2 Nf3 11.gf3 g6 12.Rg1 Bh2 13.Rh1 Bd6 14.Rg1 Re8 15.Be2 d4! 16.Bc4 (16.ed4 cd4 Combination) 16...Be6 17.Kd1 (17.Na3 Nd5–+) 17...Nd5 18.ed4 (18.Bd5 Bd5 19.e4 Qh4–+) 18...Nb4 19.Qc3 Bc4 20.Qc4 Qf6 21.Qc3 (21.Qb3 c4! 22.d5–+) 21...cd4 22.Qb3 (22.Qd4 Be5 23.Qb4 Bb2–+) 22...Rac8 23.a3 (23.Rh1 Qf4 24.Na3–+) 23...Qh4 24.ab4 Qf2 0–1. omaini (1955) – pierred (2850), net–chess.com, 2015.

6.Ne2 =+.

6.Qg3 +=.

5.f4 c4

6.a4 Bc5 7.Nf3 a6 8.Nc3 0–0 9.Be2 Qc7 10.Ne5 Nbd7 11.d4 (11.Nf3 Rd8=+) 11...cd3 12.Nd7 d2 13.Qd2 (13.Kd2 Nd7) 13...Bd7 14.0–0 ab5 15.Nb5 Ne4 16.Qd3 Qb6 (16...Qa5 17.Nc3 Qb6 18.Ne4 de4 19.Qc3 Be3 20.Kh1=+) 17.Bd4 Rfc8 18.Rfb1 Qa5 19.Rc1 Bd4 20.Qd4 Bb5 21.Bb5 Nc3 22.Bd3 g6 (22...Rc6 23.Rf1–/+) 23.Re1 (23.Rf1 Qc5=+) 23...Qc5 (23...b6 24.Qf6=+) 24.Rec1 (24.Kh1 b6–/+) 24...b6 25.g4 Qd6 (25...Qc6 26.g5–/+) 26.Rf1 (26.g5 Qc6–/+) 26...Ra5 27.Kg2 Qc6 28.Ra3 b5 (28...Na4 29.Rfa1 Rca8 30.Qb4–/+) 29.Rc3 (29.Qc3 Qc3 30.Rc3 Rc3 (30...ba4?? 31.Rc8 Kg7 32.Ra1+–) 31.ab5 Ra2=) 29...Qc3= 30.Qc3 Rc3 31.ab5 Ra2 32.Kf3 Rb2 33.Ra1 Rc7 34.Ra8 Kg7 35.h4 h5 36.gh5 gh5 37.e4 Rc3=+ 38.ed5 Rbc2 39.Ke4 Rd2 40.de6 fe6 41.b6?? Rb3 42.Ra7=+ Kf6 43.b7 Rb4 44.Ke3 Rh2 45.Be4 Rh4–/+ 46.Ra8 Rh3 47.Kd2 Rhb3 48.Kc2 Rb2 49.Kc1 Rb7 50.Bb7 Rb7 51.Rh8 Kg6 52.Kd2 Rh7 53.Rg8 Kf5 54.Rf8 Kg6?? 55.Ke3 h4–/+ 56.Kf2 h3–+ 57.Kg1 h2 58.Kh1 Rh6 59.Rd8 Kf5 60.Rf8 Ke4 61.Rf7 Ke3 62.Rf8 Kf3 ½–½. Pietrzak,Janusz – Rzepecki,Karol, II–T.Jurajski, 1994.

6.Nf3 a6 7.Nc3 ab5 8.Nb5 Bd7 9.a4 Be7 10.Be2 0–0 11.0–0 Na6 (11...Nc6=) 12.Nfd4 (12.d3 cd3 13.cd3 Nc5=) 12...Nc7 (12...Nc5!?–/+) 13.d3 (13.Nc3 Bc5=) 13...cd3 14.Bd3 (14.cd3 Nb5 15.ab5 Qb6=) 14...Ne4 (14...Na6 15.Nb3=) 15.Be4 (15.c4 Nb5 16.cb5 Nc5=) 15...de4+= 16.Qg4 (16.Nc3 Nd5 17.Nd5 ed5+=) 16...Bf6 (16...Nd5 17.Qe2+=) 17.Nc7 Bd4?? (better is 17...Qc7 18.Nb5 Qd8 19.Bf6 Qf6+=) 18.Bd4+– (18.ed4 Qc7 19.Qe2 f5–/+) 18...e5 19.Qg3 ed4 20.Na8 de3?! (20...Qa8 21.f5 f6 22.ed4+–) 21.Qe3 (better is 21.Rfd1 e2 22.Rd2 e3+–) 21...Qa8 22.f5 (22.Qe4 Qa7 23.Kh1 Bc6+–) 22...f6 (better is 22...Qe8!?+–) 23.Qe4 Bc6 24.Qc4 Kh8 25.Rf4 (25.Qb4 Qa7 26.Kh1 Rc8+–) 25...Re8 (25...b5 26.Qc5 Bg2 27.a5+–) 26.Rg4 (26.Rd1 h6+–) 26...Qa5 (26...Qa7 27.Qd4 Qa5 28.Rf1+–) 27.Rf1 Re1 (27...Qd2 28.Qd3 Qa5 29.Rd4+–) 28.Qb4 (28.h3 Re7+–) 28...Rf1 (28...Qb4!? 29.Rb4 Re2+/–) 29.Kf1+– Qf5 30.Rf4 Qc8 31.a5 (31.Qe7 Bd5+–) 31...h6 32.h3 Qd7 33.Qd4 (33.Kf2 Qd1 34.Rc4 Qd7+–) 33...Qc7+/– 34.Qd2 Bb5 (34...Qe5 35.Kg1+/–) 35.Kg1 Qe5 (35...Qc5 36.Qf2 Qa3 37.Rg4+/–) 36.Rd4+– Kh7 1–0. De Visser,Arno – de Beurs, 1981.

5.f4 Bd7

6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Ne4 10.Nf3 dc4 11.Bc4 Nd6 12.Be2 Nb5 13.Qb3 Qa5 14.Be5 Na6 15.0–0 f6 16.Bc3 Nc3 17.Nc3 Qb4 18.Qa2 Qb6 19.Ra1 Nc7 20.Rb1 Qc6 21.Qa7 c4 22.Rb7 Nd5 23.Rb8 Kf7 24.Nd4 Bc5 25.Nc6 Ba7 26.Rb7 Nc3 27.Bh5 1–0. Landgraf – Blauhut, corr SOK–90–58.

6.c4 Ne4 7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 dc4 11.Bc4 Nd6 12.Qb3 Nc4 13.Qc4 Qa5 14.Bc3 Qb5 15.Qa2 Bd6 16.Kf2 0–0 17.Na3 Qa6 18.Qb2 f6 19.Ra1 Qc6 20.Nc4 Bc7 21.Ba5 Ba5 22.Ra5 b5 0–1 (48.). Kucharkowski – Schneider, Freital 1989.

5.f4 Ne4

6.Nf3 Nd7 7.c4 =.

6.Nf3 Nd7 7.Be2 Be7 8.0–0 Bf6 9.Qc1 (9.Be5 0–0=) 9...Bb2 (9...a6 10.d3 Nd6 11.ba6 ba6 12.Nbd2=) 10.Qb2 0–0 11.g4 (11.a3 Qb6=) 11...Qf6 (11...a6 12.Nc3=+) 12.Qf6= Ndf6 13.g5 (13.Ne5 a6=) 13...Ne8 (13...Nd7 14.a4=+) 14.a4= f6 (14...Nc7 15.Nc3=) 15.d3 N4d6 16.Nc3 (16.c4 Bd7=) 16...Nf5 17.Nd1 Ned6 (17...Bd7 18.gf6 Nf6 19.c3=) 18.gf6 gf6 19.Nd2 (19.Kf2 Kf7=) 19...Bd7 (19...Kf7 20.Nb3=) 20.c3 b6 (20...Kf7 21.e4 Rg8 22.Kh1=) 21.e4 Ne7 22.Bf3 de4 23.Ne4+= Ne4 24.de4 Ng6= 25.Be2 Rad8 26.Ne3 Bc8 27.Nc4 Bb7 28.f5 ef5 29.ef5 Ne5 30.a5+/– Kh8 31.Ne5 fe5 32.Bc4 Rd2= 33.Ra2 Ra2 34.Ba2 Kg7 35.ab6 ab6 36.Bb1 Kf6 37.Rd1 e4 38.Rd6 Kf5=+ 39.Rb6 Rf7 40.Ba2= Re7 41.Kf2 Kf4 42.Rf6 Ke5 43.Rf7 Rf7 44.Bf7 Kf4 45.c4 e3 46.Ke1 Ke5 47.b6 Kd4 48.Bd5! Bc8 49.h4 Kd3+= 50.h5 h6 51.b7 Bb7 52.Bb7 Kc4 53.Ke2 Kd4 54.Ba6 c4 55.Bb5 c3 56.Bd3 Ke5 57.Ke3 Kf6 58.Kf4 Ke7 (better is 58...c2!? 59.Bc2 Ke6+=) ½–½. Soriano,Ignacio – Aguirre Izaguirre,Pedro Jose (2210), ARAEQ1 op Spain, 1997.

6.Nf3 f6 7.c4 (7.Bd3+=) 7...Bd7 (7...a6!?+=) 8.Qb3 (8.Nh4 g6 9.Qb3 dc4 10.Bc4 a6 11.Be6 Be6 (11...Bb5?? 12.Bf7 Kd7 13.Qe6 Kc7 14.Qe4+–) 12.Qe6 Qe7+/–) 8...dc4 9.Bc4 Qe7 (9...a6!? 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nd6 13.Be6 Qa5+/–) 10.a4 (10.Nc3 Nd6+–) 10...Nd6 11.Bd3 a6 (11...c4 12.Bc4 Nc4 13.Qc4 Qc5+–) 12.Ba3 (better is 12.Na3!?+–) 12...ab5+/– 13.ab5 b6 (13...g5 14.0–0 gf4 15.Nc3+/–) 14.Nc3 (14.Be2 Qf7+/–) 14...g6 (14...c4!? 15.Bc4 Nc4 16.Be7 Ra1 17.Nd1 Na5+/–) 15.0–0 (15.Kf2 Kf7+–) 15...Bg7 16.e4 (better is 16.Na4 Qd8 17.Nd4+–) 16...e5?? (better is 16...c4 17.Bd6 cb3 18.Be7 Ra1 19.Ra1 Ke7+/–) 17.Nd5 (17.fe5 fe5 18.Nd5 Be6+–) 17...Be6 18.Nc7! (18.Ne7?! Bb3 19.fe5 fe5=) 18...Kd7 (18...Qc7 19.Qe6 Discovered attack (19.Qe6 Deflection)) 19.Na8 (better is 19.Nd5 Ke8 20.fe5 fe5 21.Bb2 Ra1 22.Ra1+– (22.Ba1?! Bd5 23.Qd5 Nd7+–)) 19...Bb3–/+ 20.Nb6 Ke8 21.Bc5 Qb7 (21...Qc7 22.Rfc1 ef4 23.Na8+/–) 22.Ra3 (better is 22.fe5 fe5 23.Ra3+=) 22...Bc4?? (better is 22...Nc8 23.Nc8 Qc8+=) 23.Bc4+/– Qc7?? 24.Bf2 Nc4 25.Rc1 Qb6 26.Bb6 Nb6 27.fe5 fe5 28.Ra7 N8d7 29.Ng5?? Bf6 30.Ne6+– Bd8 31.Kf1 h6 32.Nc5 Rh7 33.Nd7 Rd7 34.Rd7 Nd7 35.Rc6 Bg5?! 36.b6 Kd8 37.b7 Bd2 38.Rc8 Ke7 39.b8Q Nb8 40.Rb8 Kf6 41.h4 g5?? 42.Rb6 Kg7 43.h5 Be3 44.Ra6 g4 45.Rg6 Kf7 46.Ke2 Bf4 47.Kd3 g3 48.Kc4 Ke7 49.Kd5 Kf7 50.Re6 Kg7 51.Re5 Kf6 52.Rf5 (52.Rf5 Ke7 53.Rf4 Kd8 54.e5 Kc7 55.e6 Kb6 56.e7 Kc7 57.e8Q Kb7 58.Qc6 Kb8 59.Rb4 Ka7 60.Qa4#) 1–0. Sollum – Valle, Oslo, 1999.

5.c4 a6

6.a4 g6 7.Nf3 (7.d4 ab5 8.ab5 Ra1 9.Ba1 Ne4=) 7...Bg7 8.Be2 0–0 9.0–0 Nbd7 (9...ab5 10.ab5 Ra1 11.Ba1 dc4 12.Bc4+=) 10.d4 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 (13.Nbd2 c3 14.Bc3 Nd5+=) 13...Nb6+= 14.Be2 cd4 (14...Nfd5 15.Qd2+=) 15.Nd4 (15.Bd4 Nbd5+=) 15...Nfd5 (15...e5 16.Nf3 e4 17.Nfd2=) 16.Nd2 (16.Bb2 Re8=) 16...Bd7 (16...e5 17.N4b3=) 17.Qb3 (17.N4f3 Nc3 18.Bc3 Bc3+=) 17...Qb8 (17...e5 18.N4f3 Qe7 19.Nc4 Nc4 20.Qc4=) 18.Bb2 (18.N4f3 e5+=) 18...Rc8= 19.Ne4 (19.Bf3 Nf6=) 19...e5 20.Nf3 Be6 (20...Bf5 21.Bd3=) 21.Neg5 Nf4 22.Ne6 Ne6 (22...Ne2 23.Kh1 e4 24.Ng7 ef3 25.gf3+=) 23.Nd2 Nc5 24.Qa2 (24.Qb4 Nd5 25.Qh4 Qd6+=) 24...Nca4= 25.Ba1 Qc7 26.Bd1 (26.Ne4 Qc2 27.Qc2 Rc2+=) 26...Nc3= 27.Bc3 Qc3 28.Ne4 ½–½. Timmermans,Mark (1835) – Belle,Prahlada (1630), Euro Chess Tournament, 2005.

6.Qa4 Bd7 7.Nf3 g6 (7...dc4!? 8.Bc4 Nd5=) 8.cd5 ed5 9.Nc3 Rg8 10.Ne5 Bg7 11.d4 c4 12.Be2 Qb6 13.Nd7 Nbd7 14.Rb1 Rc8 15.Ba3 Bf8 16.Bf3 Ba3 17.Qa3 ab5 18.Rb5 (worse is 18.Nd5 Nd5 19.Bd5 g5+/–) 18...Qa6 19.Ra5 Qc6 20.Bd5 Nd5?? (20...Qb6+–) 21.Nd5 (21.Rd5?! g5+–) 21...Qe6 22.Qb4 (better is 22.Ra8 Nb8 23.Rb8 Rb8 24.Nc7 Kd7 25.Ne6 fe6 26.Qa4 b5 27.Qa7 Kd6+–) 22...b6 (22...Kd8 23.Qb7 Qd6 24.Ra8 Ra8 25.Qa8 Qb8 26.Qb8 Nb8 27.Kd2+–) 23.Rb5 (better is 23.Ra8! Ra8 24.Nc7 Kd8 25.Ne6 fe6+–) 23...Rc6 24.0–0 Qd6 25.Rc1 Kf8 26.Rc4 Qb4 27.Rbb4 Rc4 28.Rc4 Kg7 29.Rc7 Rd8 30.g3 1–0. Leon Manas,J (1720) – Padilla Socorro,Jesus, Open, Las Palmas ESP, 2009.

6.ba6 Na6 7.cd5 ed5 8.Bb5 Bd7 9.Bf6 Qf6 10.Bd7 Kd7 =.

6.Nc3 Nbd7 7.Nf3= Be7 (7...ab5 8.cd5 ed5 9.Bb5=) 8.Be2 (8.ba6 ba6 9.Be2 Rb8=) 8...0–0 (8...ab5 9.cd5 ed5 10.Bb5=) 9.0–0 Nb6 (9...dc4 10.ba6 b6 11.Bc4 Ba6 12.d3=) 10.Qb3 (10.d3 d4 11.ed4 cd4=) 10...ab5 11.Nb5 dc4 12.Bc4 Ra4 (12...Nc4 13.Qc4 Bd7 14.Ne5=+) 13.d3= Bd7 14.a3 Nfd5 (14...Nc4 15.dc4 Qa8 16.Rfd1=) 15.Nc3 (15.Rab1 Ra5=) 15...Nc3 16.Bc3 Ra7 17.Rfb1 (17.Rab1 Nc4 18.dc4 Bc6=) 17...Nc4 18.dc4 Bf6 (18...f6 19.Rd1=) 19.Be5 (19.Bf6!? Qf6 20.Qb6+=) 19...Bc6= 20.Rd1 Qa5 21.Bf6 gf6 22.Qb2 Kg7 23.Qe2 (23.Ne1 Rd8+=) 23...Rd8 (23...Qc3 24.Nd2=) 24.Rd8+= Qd8 25.Ne1 (25.e4 b6+=) 25...Ra4 26.Qg4 (26.Rd1 Qe7=) 26...Kf8 (26...Kh8 27.Rd1 Qe7 28.Nd3=) 27.Rd1+= Qc7 28.Rd3 (28.Nd3!?+=) 28...b5 29.Qd1 (better is 29.Qh4 Kg7 30.Qg4 Kf8 31.Qh4=) 29...Be8 (29...Rc4 30.Kh1–/+) 30.Rd8 (better is 30.cb5!? Bb5 31.Rc3+=) 30...Rc4=+ 31.Ra8 (31.Kh1=+) 31...b4 (better is 31...Ke7–/+) 32.Qh5?? (better is 32.Qa4! Qe7 33.ab4 Rb4 34.Qd1=) 32...Rc1–+ 33.Kf1 Qb7 34.Qh6 (34.Rd8 b3 35.Qf3 Qf3 36.gf3 b2–+) 34…Ke7 (35.f3 Qa8–+) 0–1. Zylla,Johannes – Olzem, BSF–Vereinspokal, 1993.

6.cd5 ed5 7.ba6 ba6 =+.

6.a4 ab5

7.cb5 b6 8.Nf3 Bb7 9.Be2 Nbd7 10.d3 Bd6 11.0–0 0–0 12.d4 c4 (12...Qc7 13.dc5 Nc5 14.Bf6 gf6 15.a5 Ra5 16.Ra5 ba5 17.Nc3–/+) 13.Ne5 Ne8 14.Nc6 (14.Qc2!?=+) 14...Qc7 15.Ne5 (better is 15.f4!?–/+) 15...Ne5–+ 16.de5 Be5 17.Be5 Qe5 18.Nd2 Nd6 19.Nf3 Qf6 20.Nd4 Ne4 21.Qc2 Rfc8 22.f3 Nc5 23.Rac1 (23.f4 Ra5–+) 23...Ra4 24.Nc6? (24.Ra1 Ra1 25.Ra1–+) 24...Bc6 25.bc6 Rc6 26.Ra1 (26.Rfd1–+) 26...Ra1 27.Ra1 Rc8 (better is 27...Qa1 28.Bf1 c3–+) 28.Rb1 Nb3 (better is 28...Qe5 29.Qc1 Rb8–+) 29.Rb3= Qd8 30.Rb5 Qc7 (30...d4 31.ed4 Qd4 32.Kf1=) 31.Rb1 (31.Qc3 Ra8+=) 31...Qc6 32.h3 b5 33.Kh2 (better is 33.Qc3!?=) 33...Rb8 34.Qa2 b4 35.Qa7 (35.Qd2!?–/+) 35...b3?? (better is 35...Qb6 36.Qa1 f6–+ (36...Qe3?! 37.Rb4 Rc8 38.Qb2–/+)) 36.Qb8 (36...Qe8 37.Qe8#) 1–0. stoker – SOULESSNURSE, Live Game Caissa's Web, 2004.

7.cb5 b6 8.Nf3 Bd6 9.Be2 0–0 10.0–0 Bb7 11.d3 Nbd7 12.Nbd2 Qc7 13.g3 Ne5 (13...Ra7!?–/+) 14.Ne5= Be5 15.d4 Bd6 16.dc5 Bc5 17.Nf3 (17.Bf6 gf6 18.Nb3 Bb4=) 17...Nd7 18.Rc1 Qd6 19.Nd4 Rfc8 20.Bf3 Ne5 21.Bg2 Nc4?? (21...Rc7 22.Re1=+) 22.Ba1?? (22.Rc4 e5 23.Nf5 Qe6+–) 22...f6?? (22...Ba3 23.Rc3–/+) 23.Qh5?? (better is 23.Rc4 dc4 24.Bb7+–) 23...Ra4 24.Nf3? (24.Bh3 Bd4 25.Bd4 Rca8–/+) 24...Raa8 (better is 24...Ne3 25.Rc5 Nf1 26.Rc8 Bc8 27.Bc3 Ng3 28.hg3–+) 25.Qg4? (better is 25.Rc4 dc4 26.Ng5 fg5 27.Bb7–/+) 25...Re8 (better is 25...Ne3 26.fe3 Be3 27.Kh1 Rc1 28.Rc1 Bc1 29.Bf6 Bh6–+) 26.Bf6=+ Qd7 27.Ne5 Ne5 28.Be5 Rf8 29.Ra1 Ra1 30.Ra1 Rf7 31.Ra7 (31.Bh3 Kh8=) 31...Qb5= 32.Ra1 (better is 32.Qe6!? Qc6 33.Qc6 Bc6 34.Ra6=) 32...Qe8 33.Ra7 Qf8 (33...b5!? 34.Ra1 Qe7–/+) 34.Rb7 (34.Qe6!? Kh8 35.Bd4+=) 34...Rb7=+ 35.Qe6 Kh8 36.Qd5 Rf7 37.f4 (better is 37.Bf4!?=+) 37...Be3–/+ 38.Kf1 Bc5 39.Qc4 (39.Be4 Qe8–+) 39...Rd7 (40.Qc2 Qd8–+) 0–1. bloodymama – Putte7, Live Game Caissa's Web, 2004.

7.cd5 ba4 8.de6 Be6 9.Bb5 Nbd7 10.Ba4 =+.

7.ab5 Ra1

8.Ba1 Bd6 9.Nf3 Nbd7 10.Be2 0–0 11.0–0 b6 12.d4 Bb7 13.Nbd2 cd4 14.Bd4 Qc7 15.h3 e5 16.Bb2 Rc8 17.Qb3 Nc5 18.Qa2 Ra8 19.Qb1 Na4 20.Ba1 e4 21.Nd4 Bh2 22.Kh1 Be5 23.Rc1 Nc5 24.Bb2 Qd7 25.cd5 Bd5 26.Kg1 Ne6 27.Ne6 Bb2 28.Qb2 Qe6 29.Bc4 h6 30.Bb3 Bb3 31.Nb3 Qd5 32.Nd4 Ra2 33.Qc3 Qd8 34.Qc6 g6 35.Qc4 Rd2 36.Ra1 Nd5 37.Qc1 Rd3 38.Qc6 Kg7 39.Ra8 Rd1 40.Kh2 Qc7 41.Qc7 Nc7 42.Rc8 Rc1 43.g4 Rc5 44.Kg3 Kf6 45.Rb8 Nd5 46.Rb7 h5 47.Rd7 hg4 48.Kg4 Ke5 49.Rf7 Rc1 50.Rf8 Nf6 51.Kg3 Rg1 52.Kh2 Ra1 53.Rc8 Ra2 54.Rc6 Nd7 55.Kg3 Ra1 56.Kg2 Ra8 57.Rg6 Kd5 58.h4 Rh8 59.Kg3 Rh7 60.Rg5 Kc4 61.h5 Nc5 62.Kh4 Na4 63.Rf5 Rg7 64.h6 Rg2 65.Rh5 Rh2 66.Kg5 Rf2 67.h7 Rf8 68.h8Q Rh8 69.Rh8 Nc3 70.Rc8 1–0. Mueller – Hanreich, 1991.

8.Ba1 Nbd7 9.Nf3 Nb6 10.Na3 Bd6 11.Bc3 d4 12.Ba5 e5 13.ed4 e4 14.Ng1 cd4 15.Qa1 Bc5 16.d3 Qe7 17.de4 Ne4 18.Bb6 Bb6 19.Nc2 Ng3 20.Be2 Nh1 21.Nd4 Qh4 22.Ngf3 Qf2 23.Kd2 0–0 24.Qh1 Bd4 0–1. marus – Siget, internet, 2001.

8.Ba1 Nbd7 9.Nf3 Be7 10.Be2 0–0 11.0–0 dc4 12.Bc4 Nb6 13.Na3 Nc4 14.Nc4 Bd7 15.Qb1 Nd5 16.d4 Nb4 17.Rd1 Qc7 18.b6 Qc8 19.Nce5 Rd8 20.Rc1 Na6 21.dc5 Nc5 22.Bd4 Ba4 23.Nd3 Nd3 24.Rc8 Rc8 25.Bb2 Nb2 26.Qb2 Rc2 27.Qa1 Bf6 28.Nd4 1–0. Giudice – Ammendola, Cava dei Tirreni 1972.

8.Ba1 Be7 9.Nf3 0–0 10.Be2 Qa5 11.Nc3 dc4 12.Bc4 Nbd7 13.0–0 Nb6 14.Qb3 Rd8 15.d4 Qb4 16.Ne5 Nc4 17.Qc4 Qc4 18.Nc4 cd4 19.ed4 Bd7 20.Rb1 Be8 21.Na5 Rb8 22.f3 Kf8 23.Kf2 Bd8 24.Nc4 Be7 25.Ke3 Ra8 26.Kd3 Nd5 27.Nd5 ed5 28.Ne3 Ra5 29.Nd5 Bb5 30.Ke3 Ra3 31.Kf2 Ra2 32.Rb2 Rb2 33.Bb2 Bd6 34.Bc3 Bc4 35.Bb4 Bd5 36.Bd6 Ke8 37.Ke3 Kd7 38.Bf8 g6 39.Kf4 f6 40.h4 Ke6 41.Bc5 b5 42.g4 Bc6 43.Ke3 f5 44.Kf4 fg4 45.fg4 h5 46.gh5 gh5 47.Ke3 Kf5 48.Kd3 Bd5 49.Kc3 Ke4 50.Be7 Bc4 51.Bf6 Kd5 52.Kb4 ½–½. Klinke – Wilbert, 1996.

8.Ba1 Be7 9.Nf3 0–0 10.Be2 dc4 11.Bc4 Nbd7 12.0–0 Nb6 13.Be2 Ne4 14.Qc2 Qd5 15.Nc3 Nc3 16.Bc3 c4 17.Rb1 f5 18.Ba5 Bc5 19.Bb6 Bb6 20.Qc4 Qd6 21.d4 Bd7 22.Ne5 Rc8 23.Qb3 Kf8 24.h3 Ke7 25.Bf3 Qb8 26.Qb4 Qd6 27.Qd6 Kd6 28.Bb7 Rb8 29.Nd7 Kd7 30.Bc6 Kd6 31.Kf1 Rc8 32.Ke2 Rc7 33.Ra1 Ra7 34.Ra7 Ba7 35.Kd3 Bb6 36.f3 Ba7 37.e4 e5 38.de5 Ke5 39.ef5 Kf5 40.Be4 Kf4 41.Bh7 g5 42.Kc4 Ke5 43.g3 Bf2 44.h4 1–0. Lipok,Erik – Heiduczek,Josef, 1992.

8.Ba1 Be7 9.Nf3 0–0 10.Be2 Nbd7 11.0–0 dc4 12.Bc4 Nb6 13.Be2 Nfd5 14.Na3 f6 15.Nc4 Bd7 16.Qb1 Nc4 17.Bc4 Qb6 18.Bd3 h6 19.Qb3 Nb4 20.Bc4 Re8 21.Qa4 Na6 22.Rb1 Nc7 23.Bc3 Ra8 24.Qb3 Kh7 25.h3 Qd6 26.d4 cd4 27.Nd4 f5 28.Nc2 e5 29.Bb4 Qf6 30.Rd1 Rd8 31.Na3 Bb4 32.Qb4 Be6 33.Be6 Rd1 34.Kh2 Qe6 35.Nc4 e4 36.Qc5 Ne8 37.b6 Rc1 38.Qb5 Rc4 39.Qa5 Qd6 40.g3 Qc5 41.Qa8 Rc2 0–1. Frosinos,I – Zvan,Ziga, 1998.

6.a4 b6

7.Nf3 Nbd7 8.d4 cd4 9.Nd4 Bb4 10.Bc3 Bc3 11.Nc3 dc4 +=.

7.Nf3 Nbd7 8.Be2 Bb7 9.0–0 (9.cd5 ed5 10.0–0 Bd6=) 9...Qc7 (9...dc4 10.Na3=) 10.d3 (10.cd5 ed5 11.Nc3 Bd6=) 10...dc4 11.dc4 Ng4 (11...Bd6 12.h3=+) 12.Nbd2 (12.g3 Ndf6=) 12...Rd8 (12...Bd6 13.h3 Nh2 14.Re1 Nf3 15.Bf3=) 13.h3 (13.ba6 Ba6 14.Qc2 Bb7+=) 13...h5 (13...Bf3 14.Nf3 Nde5 15.Be5 Ne5 16.Qb3+=) 14.Qc2 (14.ba6 Ba6 15.a5 Ngf6+/–) 14...Ndf6 (better is 14...Ngf6+=) 15.h4?? (better is 15.hg4 hg4 16.Ne5+/–) 15...Rd2!–+ 16.Qd2 (16.Nd2 Qh2) 16...Bf3 17.g3 Ne4 18.Qd3 (18.Qe1 Nef2 19.Qf2 Nf2 20.Kf2 Be2 21.Ke2 Qg3 22.ba6 Qh4–+) 18...Ng3! 19.Bf3 (19.fg3 Qg3) 19…Ne2!? (20.Qe2 Qh2#; 19...Nf1?! 20.Bc6 Ke7 21.Kf1=) 0–1. Mill – Schenk, 1985.

7.Nf3 Nbd7 8.Be2 Bd6 9.0–0 =.

7.Nf3 Be7 8.Be2 =.

7.f4 Bb7 8.Nf3 Nbd7 9.Na3 Qc7 10.Be2 Bd6 11.cd5 ed5 12.0–0 a5 13.Rc1 0–0 14.Nd4 Rac8 15.Nf5 c4 16.Qe1 Bb4 17.Qg3 g6 18.d3 c3 19.Nb1 cb2 20.Rc7 Rc7 21.Nd4 Rfc8=+ 22.Nb3 Nc5 23.Bd1?? Nd3 24.Qf3?? Ne4 25.Qe2=+ Nc1 26.Qb2 Nb3 27.Bb3 Bc5–/+ 28.Qe2 d4 29.f5 de3 30.fg6 hg6 31.Rd1 Re8 32.h3?? Ng3–+ 33.Qg4 e2 34.Kh2 Nf1 35.Kh1 ed1Q 36.Qg6 Kf8 37.Qh6 Ke7 38.Bd1 Ne3 39.Qg5 Kd7 40.Bf3 Bf3 41.gf3 Bd6 42.Qg1 Rc2 43.f4 Bf4 44.Na3 Rh2 45.Qh2 Bh2 46.Kh2 Rc8 47.h4 Rc3 48.Nb1 Rc2 49.Kg3 Nc4 50.h5 Ke8 51.Kg4 Kf8 52.h6 Kg8 53.Kf5 Rc1 54.Kf6 Rf1 55.Ke7 Rb1 56.Kd7 Rd1 57.Kc6 Rd6 58.Kb7 Rh6 59.Ka7 Kf8 (60.Ka6 f6 61.Kb7 f5 62.Ka7 f4 63.Ka6 f3 64.Kb7 f2 65.Ka7 f1Q 66.Kb8 Qf4 67.Ka8 Qe4 68.Kb8 Rh7 69.Kc8 Qe8#; 59...f5 60.Kb8 f4 61.Kb7 f3 62.Kb8 Rh7 63.Kc8 f2 64.Kd8 f1Q 65.Kc8 Qf8#) 0–1. Dumontelle,Joe – Townsend, March, 1978.

6.a4 dc4

7.Bc4 ab5 8.ab5 Ra1 9.Ba1 Bd6 10.Nf3 0–0 11.0–0 b6 12.d4 Nbd7 13.Nbd2 Bb7 14.Qb3 cd4 15.Nd4 Nc5 16.Qa2 Ng4 17.N4f3 Qc7 18.h3 Ra8 19.Qb2 Nf6 20.Qc2 Nce4 21.Ne4 Be4=+ 22.Qb3? Ra3–+ 23.Qd1 Bf3 24.gf3 Ra1 25.Qa1 Qc4 26.Rc1 Qb5 27.Qa8 Bf8 28.Rc8 Qb4 29.Kg2 Nd5 30.f4 Nf6 31.f3 Nd5 32.Kf2 b5 33.h4 Qd2 34.Kg3 Qe1 35.Kh3 Qf1 36.Kg3–/+ Qe1 37.Kh3 Qb4 38.h5 Ne3 39.Qb8 Nf5 40.Rd8 Qe7 41.Kg2 b4 42.Re8 Qd6 43.Qa8 Qd2 44.Kh3–/+ Qd6 45.Rd8?? Qe7–+ 46.Kg2 b3 47.Re8 Qb4 48.Rb8 Qd2 49.Kh3 Qd6 50.Rd8 Qe7 51.Kg2 g6 52.Re8 Qb4 53.Rb8 Ne3 54.Kh3 Qd6 55.Rd8 Qe7 ½–½. katchum (1925) – fingelaere (1945), net–chess.com, 2002.

7.Bc4 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.Nf3 Nb6 11.Be2 Bd7 12.Nc3 Bd6 13.d4 c4 14.0–0 0–0 15.e4 Bb4 16.Qb1 Qe7 17.Na2 Ba5 (17...Ba3 18.Ne5 Rc8 19.Bc3=) 18.Rc1 (18.Ne5 Rc8 19.Rc1 Qd6+/–) 18...Qa3 19.Ne5 Will c4 fall? (19.e5!? Nfd5 20.Bc4 Nc4 21.Rc4=) 19...Bb5= 20.Qb5 Now all is on c4 (20.Bb2!? Qd6 21.Bc4 Nc4 22.Nc4 Bc4 23.Rc4+=) 20...Qa2–/+ 21.Bf3 c3 (21...Rc8 22.d5 Qa3 23.Bb2+=) 22.g3? (better is 22.Bc3!? Bc3 23.Qb6=) 22...Rc8–/+ Black plans c2 23.Kg2 c2 24.Bb2 Qa4 25.Qd3 Bb4 26.d5 ed5 27.ed5 Bd6 28.h4 (28.Nf7 Kf7 29.Bf6 Ba3+= (worse is 29...gf6 30.Qh7 Ke8 31.Qg8 Kd7 32.Bg4 Kc7 33.Qh7 Kd8 34.Bc8 Nc8 35.Qc2 Qc2 36.Rc2+/–)) 28...h6 (28...Qa2 29.Bd4 Ba3 30.Rc2 Rc2 31.Bb6–/+) 29.Qf5 Qb3 30.Ba1? (better is 30.Bd4 Be5 31.Bb6–/+) 30...Ra8 (better is 30...Ba3 31.Nd3 Nfd5–+) 31.Ng4?? (better is 31.Nf7 Ra1 32.Nh6 Kh8 33.Ra1+/–) 31...Ng4 (31...Nfd5 32.Be4 Ra1 33.Ra1+/–) 32.Qg4 (32.Bg4 Nd5 33.Bf3 Ne7–+) 32...Ra1! 33.Ra1 Qb2 (33...Nd5?? 34.Ra8 Bf8 35.Qc8 Nf4 36.gf4+–) 34.Re1 c1Q 35.Re8 (35.Rc1 Qc1 36.Qe4–+) 35...Bf8 36.Be4 (36.Qe4 Qba1 37.Kh3 Qf1 38.Bg2 Qf2 39.Qe7 Qf5 40.Kh2–+) 36...Qba1 (36...Qba1 37.Bh7 Kh7 38.Qe4 g6–+) 0–1. Abreu Suarez,Isauro (2020) – Rodriguez Vera,Gregorio (2110), Tenerife ESP, Team Ch Div1, 2013.

7.Bc4 Bd7 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Bf6 gf6 12.Nc3 Bg7 13.0–0 f5 14.Qa4?? (better is 14.Qc2+=) 14...Bc3–+ 15.Qa5 (better is 15.Ra1 Qa4 16.Ra4–+) 15...Ba5 16.Rd1 f6 17.Ra1 b6 18.d4 cd4 19.Nd4 Ke7 20.g3 Bc3 21.Rc1 (21.Ra7 Bd4 22.ed4–+) 21...Bd4 22.ed4 Rc8 23.Rc2 Bb5! 24.Bb3 (24.Bb5 Rc2 Pinning (24...Rc2 Deflection)) 24...Rc2 25.Bc2 Kd6 26.Kg2 Bc6 (26...Nc6 27.d5 Nd4 28.Bb1 Kd5 29.h3–+) 27.Kf1 Bf3 28.Ke1 Nc6 29.Kd2 Nd4 0–1. Valpa – Ulibear, playchess.de, 2005.

6.a4 d4

7.Nf3= de3 8.fe3 b6 9.Be2 Bb7 10.0–0 Be7 (10...Bd6 11.Na3=) 11.d3 (11.Ne5 Nbd7=) 11...Qc7 (11...Ng4 A) 12.Bg7? Rg8–+ (12...Ne3?! 13.Qc1 Rg8 14.Qe3 Rg7 15.Rf2–/+); B) 12.Qd2 Bf6 13.Ra2=) 12.Nh4 (12.Qb3 Ng4 13.e4 Bd6=) 12...Bd6 (Black fights for the initiative) 13.Bf3 (better is 13.h3!?=) 13...Bh2–/+ 14.Kh1 Bg3 15.Bb7 (15.ba6 Ra6 16.Bb7 Qb7–/+) 15...Qb7 16.Bf6 gf6 17.Qf3 (17.Qg4 Qc7 18.Nf3 Qd6=+) 17...Qf3 18.Nf3 (18.Rf3?? Bh4 19.Rh3 Bg5–+) 18...h5 (18...ab5 19.cb5 Nd7 20.Nbd2–/+) 19.Nbd2 Nd7 (19...f5 20.a5 Bc7 21.Rfb1=) 20.d4 (20.a5 ab5 21.ab6 Ra1 22.Ra1 b4=+) 20...cd4 (20...Ke7 21.Rfb1–/+) 21.ed4 ab5 (21...Ke7 22.d5–/+) 22.ab5=+ Ke7 (22...Ra1 23.Ra1 Ke7 24.c5 bc5 25.Ne4=+) 23.Ra6–/+ Ra6 24.ba6 Ra8 25.Ra1 Bf4 (25...Nb8 26.Ne4 Bf4 27.g3–/+) 26.Ne4 (26.Nb3 Nb8–/+) 26...f5 (better is 26...Nb8!?–/+) 27.Nc3=+ Nb8 28.a7 Nc6 29.Nb5 Bb8 (29...Kd7 30.Ra4=) 30.d5 (better is 30.Ra6 Na7 31.Ne5 Be5 32.de5 Nb5 33.Ra8=) 30...Ne5?? (better is 30...Na7 31.Nfd4 ed5 32.cd5 Kd7=) 31.ab8Q+– (31.ab8R?! Ra1 32.Kh2 Nc4 33.Rb7 Kf6+=) 31...Ra1 (31...Rb8 32.Ne5 Rc8 33.d6 Kf6 34.Nd7 Kg5 35.Nb6+–) 32.Ng1 Nc4 (32...Re1 33.d6 Kf6+–) 33.d6 (33...Nd6 34.Qd6 Kf6 35.Qd4 Kg6 36.Qa1+–) 1–0. Kleinke – Goldbach, Wittenburg, 1979.

7.g3 e5+= 8.Bg2 Bd6 9.d3 0–0 10.e4 (10.Ne2 de3 11.fe3 ab5 12.ab5 Ra1 13.Ba1 Ng4+=) 10...Bc7 11.Nd2 Ng4 12.h3 Nh6 13.Ne2 f5 14.f3 (14.ef5 Nf5 15.0–0 ab5 16.ab5 Ra1 17.Qa1 Nd6=) 14...fe4 15.de4 ab5 16.ab5 Ra1 17.Ba1 Ba5 18.0–0 Bc7 (better is 18...Be6!?–/+) 19.Nb3 b6 20.Qd3 Nd7 21.Bb2 Rf6 22.Bc1 Nf7 23.f4 ef4 24.gf4 (worse is 24.Bf4 Nde5 25.Qd1 Nc4 26.Bc7 Rf1 27.Qf1 Qc7–+; worse is 24.Nf4 Nde5 25.Qc2 Qd6+=) 24...Nf8 25.e5 Rh6 (better is 25...Bf5 26.Qf3 Rh6=) 26.f5?? (better is 26.Bd2+=) 26...Ne5–/+ 27.Bd5? (better is 27.Qd1!? Rd6 28.Bf4 Nc4 29.Nbd4 Rd4 30.Nd4 Bf4 31.Rf4–/+) 27...Kh8 28.Qe4 (28.Qd1 Rh3 29.Nf4 Rg3 30.Ng2 Ng4–+) 28...Rh3 29.Kg2 (29.Na1 Rh4 30.Nf4–+) 29...Rb3 30.Bg5 (30.Bf4–+) 30...Qg5 31.Kh1 Rh3# 0–1. Baer,Cy (1895) – Schmitt,Harald (1860), RSS5E easy–48, 2007.

6.a4 Bd6

7.Nf3 0–0 8.Nc3 b6 9.Qc2 Bb7 10.cd5 ed5 11.Ng5 (11.d4 c4+=) 11...h6–/+ 12.Nd5 hg5 (12...Bd5?? 13.Bf6 hg5 14.Bd8 Rd8 15.Bc4 Bc4 16.Qc4 ab5 17.Qb5+–) 13.Nf6 gf6 14.h4 g4 15.Bc4 Kg7 16.Qf5 Rg8 17.Qg5 (17.h5!? Kf8 18.h6–/+ (18.Bf6 Qd7 19.Qh7 g3+–)) 17...Kf8–/+ 18.Qh6 Ke8 19.Bf6 Qd7 (19...Qc7 20.Qh7 Rf8 21.Bg7+=) 20.Qh7+= Rf8 21.Bg7 Bg2 22.Rg1 Bf3 23.Bf8 Bf8 24.Ra3 (better is 24.Rg4! ab5 25.Re4 Kd8 26.Rf4 bc4 27.Rf7=) 24...ab5–/+ 25.Rd3? (better is 25.Bb5 Nc6 26.h5–/+) 25...Ra4–+ 26.Qh8 Rc4?? (better is 26...Qf5 27.Bb5 Nc6–+) 27.Qe5= Be7 28.Qb8 Bd8 29.Qe5 Be7 30.Qh8 Bf8 31.Rc3?? (better is 31.Qe5 Be7 32.Qb8 Bd8 33.Qe5 Be7=) 31...Rc3 (better is 31...Qd5 32.Rg3 Rb4 33.Rc1–+) 32.Qc3 (32.Qe5 Qe7 33.Qb8 Kd7 34.dc3 Qf6 35.Qa7 Kc8–+) 32...c4 (32...Bd6 33.d3–+) 33.d4 (33.Qe5 Kd8 34.Qb8 Ke7 35.Qe5 Qe6 36.Qb5–+) 33...Qd5 34.Kd2 (34.Qb2 Qf5 35.Rg4 Bg4–+) 34...b4 35.Qa1 c3 36.Kc1 Qb3 37.h5 Be4 38.Rg4 0–1. Leon Manas,Jose Francisco (1675) – Hidalgo Santana,F (2180), Las Palmas Spain, Liga Churreria–A, 2016.

7.Nf3 b6 8.Be2 Bb7 9.0–0 a5 (9...0–0!?+=) 10.d4+= 0–0 11.Nbd2 Nbd7 12.Rc1 Qc7 13.cd5 ed5 14.dc5 bc5 15.h3 (15.Bd3 Qb6+=) 15...Rfe8= 16.Qc2 Rac8 17.Rfe1 Re6 18.Qf5 h6 19.Kh1 (19.Bc3!?+=) 19...Ne4= 20.Ne4 (20.Kg1!?=) 20...Re4–/+ (20...de4?! 21.Nd2+=) 21.Qh5 c4 (better is 21...Ra4!? 22.Ra1 Ra1 23.Ra1 c4–/+) 22.Nd2 (22.Bd3 Re7 23.Bf5+=) 22...Be5? (better is 22...Ree8!?=) 23.Ne4+/– Bb2 24.Rc2 Be5 25.Nd2 Nf6 26.Qh4 Bd6 (26...Qe7 27.Bg4 Rc7 28.Nf3+/–) 27.Rd1 c3 (27...Qc5 28.Rcc1+/–) 28.Bf3 (28.Bd3 Qe7 29.Nf3 Kf8+–) 28...Qd7 (28...Qe7 29.Nf1+/–) 29.Nb1 (29.Nb3 Rc4 30.Nd4 Kh7+/–) 29...Rc4 30.Rd4?? (better is 30.Qc4! dc4 31.Bb7 Qb7 32.Rd6+/–) 30...Qf5–/+ 31.Bd1? (31.Rc1 g5 32.Rc4 gh4 33.R4c3–+) 31...g5–+ 32.Qh6 Bf8 33.g4 Rd4 (33...Rd4 34.gf5 Rd1 (34...Bh6?? 35.ed4 Bf8 36.f4+–) 35.Kh2 Bh6 36.Nc3 Rf1–+; 33...Bh6? 34.gf5 Bg7 35.Nc3+– (35.Rc3?! Ne8+–)) 0–1. Shorokhov,M (2135) – Basencyan,M (2005), 14th FIDE Open, Voronezh RUS, 2010.

7.Nf3 Nbd7 8.d3 b6 9.Nbd2 Bb7 10.Be2 0–0 11.0–0 (11.h3 dc4 12.Nc4 Ne8=) 11...Re8 (11...Qc7 12.cd5 Nd5 13.ba6 Ra6 14.h4=) 12.Qc2 h6 Prevents intrusion on g5 13.h3 Consolidates g4 13...Rc8 (13...Qe7 14.Bc3=) 14.Rfe1 a5 15.Rac1 Nh7 16.cd5 ed5 17.Qb1 Ng5 18.Ng5 Qg5 19.Nf3 White threatens to win material: Nf3xg5 19...Qe7 20.Qa1 Ne5 (20...f5!?= has some apparent merit) 21.Ne5+= Be5 22.Be5 Qe5 23.Qe5 Re5 24.Bf3 Re7 25.d4 c4 Black has a new protected passed pawn: c4 26.Rc3 Rd8 27.g3 Bc8 Black threatens to win material: Bc8xh3 28.Bg2 g5 29.f3 Controls g4 29...f5 30.f4 White has a new backward pawn: e3 (30.e4 fe4 31.fe4 de4=) 30...Kg7 31.Kf2 Kf6 32.Rg1 Rde8?? gives the opponent counterplay (better is 32...Ke6+= saving the game) 33.Bd5+– Be6 34.Bf3 Rd8 35.Rcc1 Bf7 36.h4 g4 37.Bc6 Rc7? 38.Rc3 Ke7? 39.Re1 Kd6? 40.Rec1?? with this move White loses his initiative 40...Bd5+= 41.Bd5 Kd5 ½–½. Koerner,Helmut (1805) – Mayer,Herbert (1740), Berlin op, 2002.

6.a4 Nbd7

7.ba6 ba6 8.Nc3 Bd6 =+.

7.d4 b6 8.Nf3+= (8.cd5 cd4 (8...ed5 9.dc5 Nc5 10.Nc3 Be7 11.Nf3 0–0 12.ba6 Nce4) 9.Bd4 Bb4 10.Bc3 Nd5 11.Bb4 Nb4 12.Nc3 0–0) 8...Bb7 (8...cd4 9.Nd4 Ne4 (9...Bb4 10.Nc3 Ne5 11.Qb3 Qd6 12.cd5 Nd5) 10.Nc6= (10.Nc3 Bb4 11.Qc2 Ne5 12.Be2 Bb7) 10...Qh4 11.Qf3 dc4 12.g3 Ng5; 8...Be7 9.cd5 Nd5 10.Nc3 0–0 11.ba6 Ba6 12.Ba6 Ra6) 9.Nbd2 (9.cd5!? ed5 10.ba6 Ba6 11.Ba6 Ra6 12.Nc3= c4) 9...Bd6+= 10.Be2 (10.cd5 ed5 11.ba6 Ba6 12.Ba6 Ra6) 10...0–0 (10...cd4 11.Nd4 0–0 12.0–0 Qc7) 11.0–0 (11.ba6 Ba6 12.0–0 Qc7) 11...Ng4 (11...ab5 12.ab5 Ra1+= –0.54 (12...Qc7 13.Qb3+=)) 12.h3 Nh6 (12...Ngf6 13.ba6 Ba6 14.Bd3=) 13.cd5+= ed5 14.ba6 Ba6 15.Ba6 Ra6 16.e4 de4 (16...Qa8!?+=) 17.Ne4+/– Bc7 (17...Qc7 18.Re1+/–) 18.dc5 (18.Qc2!?+–) 18...Nc5+= 19.Nc5 bc5 20.Qc2 Qc8 21.Ng5 Rg6= 22.Nf3 Rd8 23.Kh1 Rd5= 24.Ng1?? Rh5?? 25.Qd3? Qb7?? 26.Qf3= Qf3 27.Nf3 Ra6 28.Rfe1 ½–½. Makoveev,Ilya – Khadaev,Shadid (1665), Kislovodsk RUS, Open, 2013.

7.d4 cd4 8.Bd4 Bb4 9.Bc3= Qe7 10.Qb3 (10.ba6 ba6 11.Nf3 0–0=+) 10...Bd6 (10...Bc3 11.Qc3 0–0 12.Nf3=+) 11.Nf3 (11.cd5 ed5 (< 11...Nd5 12.Bg7 Rg8 13.Bd4+=) 12.Nf3 Nc5=+) 11...Nc5 12.Qd1 (12.Qb2 ab5 13.ab5 Ra1 14.Qa1 Nce4=) 12...0–0 13.Be2 (13.a5 Rd8=+) 13...Nce4 (13...Rd8 14.a5=+) 14.0–0 dc4 (Black launches an attack) 15.Bc4 e5 16.Qc2 (16.ba6 ba6 17.Qc2 Bb7=+) 16...Bg4 (16...ab5 17.ab5 Bf5 18.Qe2=+) 17.Nbd2 (17.Rc1 Rfc8 18.Bb2 Be6=+) 17...Nc3–/+ 18.Qc3 e4 19.Nd4 Qe5 20.g3 Bh3 21.f4 ef3 22.N2f3 Qh5 23.Rf2? Ne4–+ 24.Qe1 Nf2 25.Qf2 Rac8 26.Be2 a5 27.Nd2 Qg6 28.Nc4 Rc5 29.Rd1 Rg5 30.Nd6 Qd6 31.Nf3 Rd5–+ 32.Nd4 Qe5 33.Bf3 Rd7 34.Re1 Re8 35.Qe2?? Qc5 36.Qd2 Qa3 37.Qa5–/+ Qd3 38.Qa7?? Rd4! 39.Kf2 Qc2 40.Re2 Rd2 41.Qb7 Re2 42.Be2 Bg4 43.Qc6 Qe2 44.Kg1 Qe3 (45.Kg2 Qd2 46.Kg1 Re1#) 0–1. Goetzel,Alfred (1740) – Hirn,Erwin (2165), Nuernberg op, 2001.

7.d4 cd4 8.Bd4 ab5 9.ab5 Bb4 10.Nd2 Ra1 11.Ba1 dc4 12.Bc4 =.

7.Be2 dc4 8.Na3 =+.

7.Be2 Bd6 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 0–0 =.

7.Be2 Bd6 8.f4 0–0 9.Nf3 (9.cd5 Nd5 10.Nf3 ab5 11.ab5 Ra1 12.Ba1 b6=) 9...b6 (9...ab5 10.ab5 Ra1 11.Ba1=) 10.0–0= Bb7 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.Nc3 (11.Na3 Qe7=) 11...h6 (11...d4 12.ed4 cd4 13.Nb1=+) 12.d4 (12.ba6 Ba6 (< 12...Ra6 13.cd5 Ra5 14.de6 fe6 15.Qb3+/–) 13.Nb5 Be7=) 12...cd4 (12...Qe7 13.dc5 Nc5 14.Nd4=) 13.Nd4 (< 13.Qd4 Bc5 14.Qd2 dc4–/+) 13...Nc5 14.Bf3 (14.cd5!? Nd5 15.Nd5 Bd5 16.ba6 Na6 17.Bf3 Bf3 18.Qf3=) 14...dc4–/+ 15.Bb7 Nb7 16.Nc6 (16.ba6 Ra6 17.Qe2 Na5–/+) 16...Qc7–/+ 17.Qc2 (17.Qe2 Rfc8–/+) 17...Nd8 (17...Bc5 18.Nd1–/+) 18.Nd8 (18.Nd4 Bc5–/+) 18...Rfd8–/+ 19.ba6 Ra6 (19...Bc5!? 20.Rae1 Ng4–/+) 20.Nb5=+ Qc6 (20...Qc8!?=+) 21.Bf6+= gf6 22.Nd4 (better is 22.Rfd1!?+=) 22...Qc5=+ 23.Rf3 (23.Kh1 Rc8=+) 23...f5–/+ 24.Qc3 (24.Rb1 Rc8–/+) 24...Qb4 25.Rg3 Kf8?? (better is 25...Kh8 26.Qb4 Bb4–/+) 26.Ne6!+/– fe6?? (better is 26...Ke7 27.Qb4 Bb4 28.Nd8 Kd8 29.Rg8 Kd7+/–) 27.Qh8 Ke7 28.Rg7 Kf6 29.Qh6# 1–0. Antoszkiewicz,Gerhard – Lichtenfeld,H, corr DDR, 1988.

7.Be2 Bd6 8.f4 ab5 9.ab5 Ra1 10.Ba1 =+.

7.Nf3 Nb6 8.Na3 ab5 9.ab5 Na4 10.Be5 Nb6 11.cd5 Nbd5 12.Nc4 Bd7 13.Ra8 Qa8 14.Be2 (14.Qb3 Nb4+=) 14...Ng4 (better is 14...Bb5!? 15.Nd6 Bd6 16.Bb5 Ke7 17.Bd6 Kd6+=) 15.Nd6+/– Bd6 16.Bd6 b6 17.0–0 f6 18.Qa1 Kf7 19.Qa6 Nb4? (better is 19...e5 20.d4 cd4 21.ed4 Nf4+/–) 20.Qb6+– Qc8 (20...Nd5 21.Qa6+–) 21.Qc5 Qc5 22.Bc5 Nd5 23.Ra1 Rb8 24.Ra7 Ke8 25.Nd4 Ne5 26.f4 Nf7 (26...Rc8 27.Nb3 (27.fe5?! Rc5 28.e4 Nb6+–) 27...Ng6 28.Kf2+–) 27.g3 (27.f5 Ng5 28.fe6 Ne6 29.Ne6 Be6 30.Rg7 h6+–) 27...e5 28.Nc6 Rc8 29.Ra6 (better is 29.e4 Nc7 30.Ne7 Nb5 31.Nc8 Na7 32.Na7 f5+–) 29...Nc7 30.Rb6 Bc6 31.Rc6 (better is 31.bc6!? g6+–) 31...Nd8 32.Bg4 (32.Bg4 Nc6 33.Bc8 (33.bc6?! Ne6=) 33...Nb5 34.Bf5 ef4 35.gf4+–) 1–0. Hal1958 – Joao cxv (Joao Neumann), playchess.de, 2002.

7.Nf3 dc4 8.Na3 Be7 9.Nc4 0–0 10.Be2 b6 11.0–0 Nd5 12.Qb3 a5 13.Rac1 Bb7 14.Nfe5 Nb4? (better is 14...Ne5!? 15.Be5 Bf6=) 15.Nd7+/– (15...Qd7 16.Nb6 Qd2 A) 17.Na8 Qe2 18.Qc3 Bf6 19.Qc5 Bb2–/+ (19...Ra8 20.Bf6 gf6 21.Qe7+=; < 19...Ba8 20.Bf6 gf6 21.Qe7+=); B) 17.Bc4+–) 1–0. Toll,A – Malchair,D, Aalborg DEN, 1988.

7.Nf3 Be7 8.Be2 0–0 9.0–0 ab5 10.ab5 Ra1 11.Ba1 dc4 12.Bc4 b6 13.d3 Bb7 14.Nbd2 Qc7 15.e4 (15.Qb3 Ra8+=) 15...Ng4 (15...Ra8 16.Bb3=) 16.Qe2 Bd6 17.g3 Nge5 (17...h6 18.Rc1=) 18.Bb3 (18.Ne5 Be5 19.f4 Ba1 20.Ra1 Ra8 21.Ra8 Ba8=) 18...Rd8 (18...Ra8 19.Bc3=) 19.Ne1 Be7 (19...Ra8 20.Bc3+=) 20.f4+= Ng6 21.Nef3 Nf6 (21...Ra8 22.Bc3+=) 22.Ng5 (22.f5 Nf8+/–) 22...h6 (22...Qd7 23.f5 Qd3 24.Qd3 Rd3 25.fg6 hg6 26.Rf2+=) 23.Nh3 (23.f5!? Nh8 24.Ngf3 ef5 25.ef5+/–) 23...Nf8 (23...Qd7 24.Bc4=) 24.Nf3 Ne8 (24...Ra8 25.Bc3=) 25.Ne5 (25.f5 ef5 26.ef5 Nd6=) 25...f6 (25...Ra8 26.Bb2=) 26.Nc4 Qd7 27.Bc2 (27.Rb1 Qd3 28.Qd3 Rd3+=) 27...Qb5 28.Rb1 Qa6 29.Nb6 Nd6 30.Nc4 Nb5 (30...Nc4 31.dc4 Qa5 32.Bd3=) 31.Bb3 ½–½. Teichmann,Erik (2365) – Rujevic,Mirko (2000), Australian Masters, 1998.

7.Nf3 Bd6=+

8.Nc3 0–0 9.Qb3 dc4 10.Bc4 Nb6 11.Be2 Nbd5 (11...e5 12.Qc2=) 12.0–0 Nc3 13.dc3 (13.Bc3 Nd5=) 13...b6 (13...e5 14.c4 e4 15.Ng5=) 14.c4 (14.Rfd1 Qc7=) 14...Qc7 (14...Bb7 15.Rfd1 Qc7 16.a5=) 15.Rad1 (15.a5 Ne4+=) 15...Bb7= 16.h3 (16.Bf6 gf6 17.Kh1 Rfd8=) 16...a5 (16...Rfd8 17.Bf6 gf6 18.Qb2=) 17.Nd2 (17.Bf6 gf6 18.Nd2 Rad8+=) 17...Bh2 (17...Qe7 18.Bc3=) 18.Kh1 Be5 19.Be5 Qe5 20.Bf3 Qc7 21.Bb7 Qb7 22.Nf3 Qc7 23.Rd3 (23.Qb2 Rad8=) 23...Rfd8 (23...e5!? 24.Rdd1 Rad8=) 24.Rfd1= Kf8 (24...Re8 25.Qc2+=) 25.Qc2 (25.Kg1 Ke7+=) 25...Rd3 26.Qd3 Ke7 27.e4 (27.Qc3 Rd8 28.Rd8 Qd8=) 27...Rd8 28.Qd8 Qd8 29.Rd8 Kd8 30.Nd2 ½–½. Sternik,Ryszard – Niewiadomski,Cyryl, corr Poland, 1985.

8.Nc3 0–0 9.cd5 ed5 10.Be2 Re8 =.

8.Nc3 0–0 9.Be2 dc4 10.Bc4 Nb6 11.Be2 Nbd5 12.0–0 a5 13.Qb3 Nb4 14.Bc4 e5 15.Ng5 Qe7 16.Nge4 Ne4 17.Ne4 Bc7 18.f4 Bf5 19.Ng3 Bc2 20.Qc3 Rad8 21.fe5+= Rd7? (21...Bd3 22.Rf4 Bc4 23.Rc4 Nd3=+) ½–½. Sundin,Thommy (1975) – Aurell,Bo (2190), Sundsvall, 1989.

8.d4 0–0 =+.

8.cd5 ed5 9.Be2 =+.

8.Be2 0–0 9.0–0 b6 10.Qb3 Bb7 11.d4 dc4 12.Qc4 Bd5 13.Qd3 ab5 14.ab5 Ra1 15.Ba1 Qc7 16.Nbd2 cd4 17.ed4 (17.Qd4 Ra8+=) 17...h6 18.h4 (18.Bb2!?+=) 18...Nh5–/+ 19.Qc3 Nf4 20.Bd1 Qb8 21.Qe3 (21.g3 Qa8–+) 21...Nf6–+ 22.g3? (better is 22.Ne1–+) 22...Ng4 23.Qe1 Nh3 24.Kg2 Nhf2 25.Rf2 (25.Bb3 Bb3 26.Nb3 Bg3 27.Ne5 Bh4 28.Qe2–+) 25...Bg3 (25...Nf2?! 26.Qf2 Qa7 27.Bc3–/+) 26.Ne4 Bf2 27.Nf2 (27.Qe2 Bh4! 28.Ne5–+) 27...Qh2 28.Kf1 Bc4 29.Be2 (29.Nd3 Bd3 30.Be2 Ne3 mate) 29…Ne3 mate 0–1. Hanscombe,Richard – Turner,Jos (2000), ch–WLS Cardiff WLS, 2010.

6.a4 Be7

7.Be2 0–0 8.d3 Qc7 9.Nf3 Rd8 (9...dc4 10.Be5 Qa5 11.Bc3=) 10.Nbd2 dc4 (10...ab5 11.Be5 Qb6 12.ab5 Ra1 13.Qa1=) 11.Nc4 ab5 12.ab5 (Opening the a–file gets White a lot of play) (12.Be5 Qd7 13.Nb6+–) 12...Ra1= 13.Ba1 b6 14.Be5 Qa7 15.Qc2 (15.0–0=) 15...h6 (15...Ng4!?=) 16.0–0+/– Bd7 17.Ra1 Qb7 18.Qb2 Be8 (18...Bc8 19.Ra2 Bd7 20.Ra3+/–) 19.Nfd2 Qd7 (Black gets in control) 20.Ra8 Qb7 21.Bf3 Nd5 22.Ra1 (22.Qa1 Bb5 23.Ra7 Qc8 24.Bg7 Bc4 25.Nc4 Nc6 26.Bd5 Na7+/–) 22...f6+= 23.Bg3 e5 24.Nb6?? (better is 24.d4 cd4 25.ed4 ed4 26.Qd4+/–) 24...Qb6–+ 25.Bd5 Rd5 26.Nc4 Qb5 27.Qb5 Bb5 28.Rb1 Rd3 29.Ne5?? fe5 30.h3 Bd6 31.Rb5 Rd1 32.Kh2 Nd7 33.f4 Rd3 34.fe5 Be5 35.Be5 Ne5 36.Rc5 Re3 37.Rc8 Kf7 38.Rc7 Kf6 39.Rc2 h5 40.g3 g5 41.Rf2 Kg6 42.Kg2 h4 43.g4 Rg3 (44.Kf1 Rh3–+) 0–1. Nebe,Lutz – Flasche,D, Clubmeisterschaft, 1989.

7.Nf3 ab5 8.ab5= Ra1 9.Ba1 Nbd7 (9...0–0 10.Be2=) 10.Qb3 (10.Be2 dc4 11.Bc4 Nb6=) 10...0–0 11.Be2 Qc7 (11...dc4 12.Qc4 b6 13.0–0=) 12.0–0= b6 13.d3 (13.Nc3 Bb7=) 13...Bb7 14.Nbd2 (14.cd5 Nd5 15.Nbd2 Ra8=) 14...e5 (14...Ra8 15.Bb2=) 15.e4 (15.cd5!? Bd5 16.Nc4=) 15…de4=+ (16.de4 Ne4 (< 16...Be4 17.Ne4 Ne4 18.Qe3+=) 17.Ne4 Be4=+). De Visser,Arnold W – Franzon,G, corr ICCF–Cup8/9 V203, 1990.

7.Nf3 0–0

8.Qc2 ab5 9.ab5= Ra1 10.Ba1 Nbd7 (10...Bd6 11.d4=) 11.Ng5 (11.d4 cd4 12.Bd4 Qc7=) 11...h6 (11...b6 12.Bb2=+) 12.Nf3 dc4 (12...Bd6 13.d4=+) 13.Bc4= Nd5 (13...b6 14.d4=) 14.0–0 Bf6 (14...N7b6 15.Be2=) 15.d4 cd4 (15...N5b6 16.dc5 Ba1 17.cb6+=) 16.Nd4 (16.Bd4 e5+=) 16...N7b6= 17.Be2 Bd7 (17...Qe7 18.Qe4+=) 18.Rc1 (18.Qe4 Qe7+=) 18...Qa8= (Black launches an attack) 19.Nd2 Rc8 20.Qb1 (20.Qd1 Rc1 21.Qc1 Qa5=) 20...Rc1 21.Qc1 Qa2 22.N4b3 Ba1 23.Na1 Na4 24.Bc4 Qb2=+ 25.Qb2 Nb2 26.Bd5 ed5–/+ 27.e4 de4 28.b6 Bc6 29.Nab3 Na4 30.Nc4–/+ Bd5 31.Nba5 Kf8 32.Nd6 Nc5 33.Kf1–/+ Ke7 34.Nf5 Kf6 35.Ne3 Ke5 36.Ke2 f5 37.Nac4 Bc4 38.Nc4 Kd4 39.Nd6 g6 40.g3 Kd5 41.Nf7 Ke6 42.Nh6 Kf6 43.h4? Kg7 (44.Nf5 gf5–+) 0–1. Krawczyk,S – Buczinski,Henryk, Katowice Poland, 1974.

8.Qc2 b6 9.d4 =+.

8.Nc3 d4 9.ed4 cd4 10.Ne2 =.

8.Nc3 Nbd7 9.Qb3 d4 10.ed4 cd4 11.Ne2? (better is 11.Nd4 Nc5 12.Qc2=) 11...Nc5–+ 12.Qa3 ab5 (12...Ng4 A) 13.Bd4?? Nf2 14.Nf4 Ncd3 15.Nd3 Ba3 (15...Nh1?! 16.Qb2–+) 16.Kf2 Be7–+; B) 13.Ng3 e5 14.Qa2–+) 13.Ned4 Ra4 (13...Ng4 14.Qc3 e5 15.ab5 A) 15...ed4?! 16.Qd4 Qd4 17.Bd4 (< 17.Nd4 Ra1 18.Ba1 Bh4–+) 17...Ra1 18.Ba1–+; B) 15...Ra1 16.Ba1 Nf2–+ (16...ed4?! 17.Qd4 Qd4 18.Bd4–/+)) 14.Qe3 (better is 14.Qc3!?–/+) 14...Ng4 (14...bc4 15.Nb5–+) 15.Qe2 (15.Qf4 e5! 16.Ne5 Bg5–+) 15...bc4 16.Ra4 Nd3 17.Qd3 cd3 18.h3 Qb6 19.Ra2 Ba3 20.hg4 Bb2 21.Bd3 h6 (21...Bd4?! 22.Bh7 Kh8 23.Be4 Kg8 24.Bh7 Kh8 25.Be4 Kg8 26.Bh7=) 22.Nb5 Bf6 (22...Qc6 23.Ke2 Bf6 24.g5–+) 23.g5 hg5?? (better is 23...Rd8 24.gf6 Rd3–+) 24.Bh7= ½–½. Zylla,Johannes – Bodenstein, BS–Stadtm., 1992.

8.Bd3 dc4 9.Bc4 Nbd7 10.Qc2 (10.Nc3!?=) 10...Nb6+= 11.Bd3 (11.Be2+=) 11...h6 (11...Nbd5!? 12.Qc4 Nb4+=) 12.e4 (12.Nc3 ab5 13.Bb5 Nbd5=) 12...ab5 13.ab5 Ra1 14.Ba1 Bd7 15.Ne5 (15.Bf6 gf6 16.Nc3 c4+=) 15...Qc7–/+ 16.Nd7 Qd7 17.Be2 Ra8 (17...c4 18.0–0–/+) 18.Bf6 (18.Be5 Ne8+=) 18...gf6 (18...Bf6 19.0–0 Qd4 20.g3–/+) 19.Qc3 Ra4 (19...c4 20.0–0 (20.Bc4?? Nc4 21.0–0 Qb5–+) 20...Qb5 21.Qg3 Qg5 22.Qc7+=) 20.Qe3 Kh7 21.f4 (21.0–0 Ra2+=) 21...Ra1 (better is 21...f5!? 22.ef5 ef5–/+) 22.0–0+= Na4 23.Qb3 (23.Nc3 Ra3=) 23...Qd4+= 24.Qe3 Qb4 25.Bd3?? (better is 25.e5+=) 25...c4–+ (25...c4 26.Bc4 Qc4–+) 0–1. Leon Manas,JF (1715) – Rodriguez Melian,JL (2100), Torneo de Ajedrez Pretemporada, 2009.

8.d4 ab5 9.ab5 Ra1 10.Ba1 =.

8.d4 b6 9.dc5 Bc5 10.cd5 Nd5 11.Nbd2 (11.Bc4 Bb7=) 11...Bb7 12.Rc1 (12.Qb3 Qe7=) 12...Nd7 13.ba6 Ba6 14.Ba6 Ra6 15.0–0 N7f6 (15...Qa8 16.Rc4=+) 16.Rc4 (16.Qb3 Qe7=) 16...Qe7 (16...Be3 17.fe3 Ne3 18.Qb3=) 17.e4 Nf4 18.Ne5 Qb7 (18...Ne8 19.Qg4 f6 20.Qf4 fe5 21.Qg4=) 19.Nb3+= Rc8 (19...Be7 20.Nc6+=) 20.Qf3+/– Ng6 21.Ng6 hg6 22.Nc5 (22.Rfc1 Nd7+/–) 22...bc5 23.Bf6 gf6 24.Qf6 Qb3 25.Rc3 Qb2 (25...Qa4?? 26.Rh3 Qe4 27.Rh8) 26.h4 Qe2 (26...Qd2!? 27.h5 Qd8 28.Qd8 Rd8+/–) 27.Rf3+– Ra7?? (better is 27...Rf8 28.h5 e5 (28...Qe4 29.h6 Qe5 30.Qe5 f6 31.Rf6 Kh7 32.Rf8 Kh6 33.Rh8) 29.Qe5 Re6 30.Qc5 Qe4+–) 28.h5 Qe4 (28...gh5 29.Rg3 Qg4 30.Rg4 hg4+–) 29.h6 Qd4 30.h7! (30...Kh7 31.Rh3 Qh4 32.Rh4 Kg8 33.Rh8#) 1–0. Woschkat,Karl_Heinz (1740) – Ausan,Leo_Tito_Jr, internet, 1999.

8.d4 b6 9.Bd3 dc4 10.Bc4 cd4 11.Bd4 Bb7 =.

8.d4 Nbd7 9.Nbd2 Qa5 10.Be2= dc4 (10...cd4 11.Bd4 Bb4 12.0–0=) 11.Bc4 (11.0–0 Nb6=) 11...Ne4 (11...Rd8 12.0–0=) 12.0–0 (12.Bd3 Ndf6+=) 12...Nd2= 13.Nd2 Bf6 (13...cd4!? 14.Bd4 e5+=) 14.Ne4+/– cd4 15.Bd4 (15.Nf6!? Nf6 16.Qd4+/–) 15...Be5 16.f4 Bd4 17.Qd4 Qb4 (17...Rd8 18.f5 Nf8 19.Qe5+=) 18.Rfb1 (18.f5 ab5 19.ab5 Ra1 20.Ra1 Qe7 21.fe6 fe6+/–) 18...Qe7 (18...Qa5 19.Nd6+=) 19.Qd6+/– Qh4 (19...Qd6 20.Nd6 Rd8 21.Rd1+/–) 20.g3 (20.Bd3 Qh5+/–) 20...Qh6 (20...Qh5 21.ba6 ba6 22.Qc6+/–) 21.Rd1 (21.ba6 ba6 22.Qc6 Rb8+/–) 21...Re8 (better is 21...ab5!? 22.Bb5 Nf6 23.Nf6 Qf6+/–) 22.Qc7+– Nf8? (better is 22...Nf6 23.Nd6 Rf8+–) 23.Nd6 Bd7 24.Ne8 Rc8 25.Rd7 Rc7 26.Rc7 ab5 27.Bb5 b6 28.Rb7 e5 29.a5 ba5 30.Ra5 ef4 31.ef4 Qe6 32.Raa7 Qe1 33.Kg2 Qe4 34.Kh3 Qf5 35.Kh4?? Ng6# 0–1. Nielsen,Jorgen Axel (2255) – Nielsen,HU, Denmark, 1969.

8.d4 Nbd7 9.Nbd2 b6 10.cd5 Nd5 11.Rc1 =.

8.d4 Nbd7 9.cd5 ed5 10.dc5 Nc5 =.

8.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0 7.Be2 a6 8.a4).

6.Nc3 d4

7.ed4 cd4 8.Nb1 +=.

7.ed4 cd4 8.Nce2 =+.

6.Nc3 Be7

7.Rc1 0–0 8.Nf3 (8.cd5 ed5 9.Nf3 d4 10.ed4 cd4+=) 8...Nbd7 (8...ab5 9.Nb5 Nbd7 10.Qb3+=) 9.d3 (9.ba6 ba6 10.Be2 Bd6+=) 9...Nb6 (9...ab5 10.Nb5 Ra2 11.Qb3–/+) 10.Be2 (10.cd5 ed5 11.Na4 Na4 12.Qa4 Qb6–/+) 10...Bd7 (10...ab5 11.cb5 Qd6 12.0–0+=) 11.a4 (11.ba6 Ra6 12.Qb3 dc4 13.dc4 Na4=) 11...a5 (11...ab5 12.ab5 Bd6 13.0–0=) 12.0–0 (12.Qc2=) 12...Nc8 (12...Bd6!?=) 13.d4 (better is 13.Qb3+=) 13...b6 (13...dc4 14.dc5 Bc5 15.Bc4+=) 14.Re1 (14.cd5 cd4 15.Qd4 Bc5+–) 14...Nd6 (14...dc4!? 15.dc5 bc5+/–) 15.cd5 (15.dc5 bc5 16.cd5 Re8+–) 15...Nd5 (15...Rc8!?+/–) 16.Nd5+– ed5 17.dc5 bc5 18.Qd5 (better is 18.Ne5+–) 18...Nf5? (18...Rc8+–) 19.Red1 (19.Ne5 Be6 20.Qd8 Rfd8+–) 19...Ra7 (19...Be6 20.Qc6 Qe8+–) 20.Ne5 Be6 (20...Nd6 21.e4 Be6 22.Qc5+–) 21.Qd8 Rd8 (21...Bd8 22.Nc6 Rd7 23.Rd7 (worse is 23.Nd8 Rfd8 24.Bc3 Nd6+–) 23...Bd7 24.Rc5+–) 22.Rd8 (22.Nc6!? Rda8+–) 22...Bd8 23.Nc6 (23.Rc5 Ne7+–) 23...Rd7 24.Ba3 Bg5 (24...c4 25.Ne5 Rd2 26.Bc4+–) 25.Bc5 Bb3 26.Na5 Ba4 27.b6 Bf6 (27...Be7 28.b7 Rd8 29.Ba7+–) 28.b7 Be5 (28...Rb7 29.Nb7 Bc6+–) 29.Bd6! (29.Bd6 Rd8 30.Be5+–) 1–0. Gehold – Whitcomb,C, Amsterdam IBM, 1988. (Same as the game below. Which is correct?)

7.Rc1 0–0 8.Nf3 Nbd7 9.d3 (9.cd5 ed5 10.Be2 Qb6=+) 9...Nb6 (9...ab5 10.cb5 e5 11.Be2–/+) 10.Be2 Bd7 (10...d4 11.ed4 cd4 12.Ne4 ab5 13.cb5 Ra2 14.Bd4=+) 11.a4 (11.0–0 ab5 12.cb5 Bd6=) 11...a5 (11...ab5!? 12.ab5 dc4 13.dc4 Qc7=) 12.0–0= Nc8 (12...Bd6!?=) 13.d4+/– b6 (13...dc4 14.dc5 Qc7 15.Bc4+/–) 14.Re1 (14.cd5 cd4 15.Qd4 ed5 16.Nd5 Be6+–) 14...Nd6 (14...cd4!? 15.Qd4 Bc5+/–) 15.cd5 Nd5 (15...Rc8!?+/–) 16.Nd5+– ed5 17.dc5 bc5 18.Qd5 (< 18.Rc5 Nc4 19.Bc4 Bc5 20.Qd5 Rc8+/–) 18...Nf5 19.Red1 (19.Ba3 Rc8 20.Red1 Be6 21.Qd8 Rfd8 22.Rd8 Rd8+–) 19...Ra7 (19...Be6 20.Qc6 Qb8 21.Be5+–) 20.Ne5 (20.Ba3 Rc7+–) 20...Be6?! (20...Bd6+–) 21.Qd8 Rd8 22.Rd8 Bd8 23.Nc6 (23.g4 Nd6 24.Nc6 Rd7 25.Nd8 Rd8 26.Rc5 Ne4+–) 23...Rd7 24.Ba3 Bg5 25.Bc5 Bb3 (25...Rd2 26.Kf1+–) 26.Na5 Ba4 27.b6 Bf6 28.b7 Be5 (28...Rd8+–) 29.Bd6! (29...Bd6 30.Rc8 Bf8 31.b8Q+–) 1–0. Meybohm,Dirk – Bohme, corr DDR, 1988. (Same as the game above. Which is correct?)

7.Rc1 d4 8.ed4 cd4 9.Na4 +=.

7.d4 ab5 8.cd5 b4 +=.

5.c4 b6

6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4).

6.a4 Nbd7 7.h4 =.

6.Nc3 Bb7 7.Nf3 Nbd7 8.cd5 Nd5 9.Nd5 Bd5 10.a4 Nf6 11.Be2 Bd6 12.h3 0–0 13.0–0 Rc8 14.Rc1 Nd7 15.Bc4 Qc7 16.Bd5 ed5 17.Rc2 Qb8 18.Qa1 f6 19.Qa2 c4 20.Rd1 Ne5 (20...Nc5!?=) 21.Ne5 (21.Be5 fe5 22.d3 Kh8+/–) 21...Be5 22.Be5 Qe5 23.d3 cd3 24.Rd3 Rc2 25.Qc2 Rd8 26.Qc3 Kf7 27.f4 (27.Rd4!?+/–) 27...Qc3= 28.Rc3 Rd7 29.Rc6 Ke7 30.Kf2 Rd6 31.Rc7 Rd7 32.Rc2 d4 33.Kf3 de3 34.Re2 Rd3 35.Re3 Re3 36.Ke3 Ke6 37.g4 Kd5 38.Kd3 Kc5 39.Kc3 Kd5 40.Kb4?? (better is 40.Kd3=) 40...Kd4 (better is 40...Ke4 41.a5 g6–+) 41.a5? (41.f5 h5 42.gh5 Ke5–+) 41...Kd5 (41...h5 42.f5 Ke4 43.gh5 Kf5 44.ab6 ab6 45.Kc3–+) 42.f5 Kd4 43.ab6 ab6 44.h4 ½–½. Ruhle,Ernst Albrecht – Thomi,Roesy (1705), Weggis Seniors op, 2003.

6.Nc3 Bd6 =.

6.d4 dc4 7.Bc4 Bb7 8.Nf3 Nbd7 9.0–0 Be7 10.a4 0–0 11.Nbd2 Rc8 12.Qb3 cd4 13.Bd4 Nd5 14.Rac1 Nc5 15.Bc5 Bc5 16.Ne4 Nf6 17.Nc5 Rc5 18.Rfd1 (18.Be2 Qd5 19.Qa3 Rfc8=) 18...Qa8 (18...Qc7!? 19.Nd2 Rd8=+) 19.Be2= Rh5 20.Nd4 Bd5 21.Qb2 Rh6 22.Bf3 Bf3 23.Nf3 (< 23.gf3 Qd5–/+) 23...Qe4 24.Rd4 Qg6 25.Ne5 (better is 25.Rc7+/–) 25...Qh5=+ 26.Nf3 g5 27.h3 g4 28.Nh2 gh3 29.f3 (better is 29.g3=) 29...hg2–/+ 30.Qg2 Kh8 31.Rc2 (31.Ng4!? Rg8 32.Kf2–+) 31...Rg8 32.Ng4 Rhg6 33.Kf1 (33.Rcc4 e5 34.Rd6 Rg4 (34...Ng4?! 35.Rg6 Qg6 36.Rg4–/+) 35.fg4 Ng4–+) 33...Nd5 34.Re4 (34.Ke2 f5 35.Qh2 Qh2 36.Nh2–+) 34...f5 35.Re5 fg4 36.Rh5 Ne3 37.Kf2 Ng2 38.Kg2 gf3 39.Kf3 Rg3 40.Kf4 R8g4 41.Ke5 Rg5 42.Rg5–/+ Rg5 43.Ke6 h5 44.Kd6? Kh7 45.Rc7 Rg7 46.Rc4 Kh6 47.Re4 Kg5 48.Ke6 h4 49.Kd6 h3 50.Re1 h2 51.Kc6 Kf4 52.Rh1 Kg3 (53.Kd6 Kg2–+) 0–1. Istvanny – ookii (1765), internet, 2007.

6.d4 Bd6 7.dc5 bc5 8.Nf3 =.

6.cd5 ed5 7.Nf3 =.

6.cd5 Qd5 7.d4 (7.Bf6 gf6 8.Nc3 Qd7+=) 7...Nbd7 8.Nf3 Bb7 9.Be2 (9.Nbd2 Rc8=) 9...Be7 (9...cd4 10.Qd4 Qd4 11.Bd4=) 10.0–0 0–0 ½–½. Krafzik,Joachim (2075) – Hermann,Armin (2195), GER–ch Seniors, 2003.

6.Be2 Bb7 7.Nc3 d4 8.ed4 cd4 9.Na4 Bg2 10.Bf3 Bh1 11.Bh1 Nbd7 12.Ba8 Qa8 13.Qf3 Qf3 14.Nf3 e5 15.Bc1 Bd6 16.Nb2 (16.d3 h6–+) 16...Nc5 (16...d3!? 17.Nh4 e4 18.h3–+) 17.d3 0–0 18.Nd2 (18.Bg5 Nfd7–/+) 18...Re8 19.f3 Nh5 20.Ne4 Ne4 21.fe4 Re6 22.a4 Rg6 23.Kf2 Bb4 24.a5 ba5 25.Na4 Kf8 26.c5 Ke8 27.Ra2 a6 28.b6 Kd7 29.Rc2 Kc6 30.Nb2 Nf6 (30...Bc5 31.Na4 Kb5 32.Nc5 Rf6 33.Ke1 Rb6 34.Nd7+/–) 31.Nc4 Nd7 32.Ba3 Bc3 33.Bb2 Rh6 34.Kg2 Bb4 35.Ba3 Rg6 36.Kf3?? Rf6–+ 37.Kg2 Bc3 38.Bb2 Be1 39.Kg1 Re6 40.Kf1 Bb4 41.Ba3 Ba3 42.Na3 Nc5 43.Nc4 Kb7 44.Ke2 Na4 45.Kd2 f6 46.Ra2 Nb6 47.Na5 Ka7 48.Rc2 Na4 49.Rc8 g6 50.Nc4 Re7 51.Rf8 Nb6 52.Na5 Nd7 53.Rd8 Kb6 54.Nc4 Kb5 55.Ra8 Nc5 56.Nd6 Ka4 57.Nc4 Rb7 58.Rf8 Kb4 59.Nd6 Rb6 60.Nc4 Nb3 61.Kc2 Rb7 62.Rf6–/+ a5 63.Ne5 Nc5 64.Rf1 a4 65.Rb1 Nb3–+ 66.Nc6 Kc5 67.Ne5 Rc7 68.Kb2 Kb4 69.Nc4 Rf7 70.Ka2 Rf2 71.Rb2 Rf1 72.Rb1 Rb1 73.Kb1 Kc3 74.e5? Nc5 75.Nb2 Ne6 76.Ka2 Kb4 77.Kb1 a3 78.Nc4 Kc3 79.Na3 Kd3 80.Kc1 Ke2 81.Nb1 g5 0–1. Moehring,Norbert (1945) – Kohler,Otto (1835), Troisdorf op, 2005.

6.Be2 d4? 7.Bf3.

6.Be2 Nbd7 7.Nf3 a6 8.Nc3 Ne4 (better is 8...Bd6!?=) 9.cd5+/– Nc3 10.dc3 (10.Bc3?! ed5 11.0–0 c4+=) 10...Nf6 11.de6 Qd1 12.Rd1 fe6 13.Ng5 (13.Ne5 ab5 14.Bb5 Ke7+–) 13...Be7 14.ba6 Ba6 (14...h6!? 15.Bb5 Kf8 16.Nf3+–) 15.Bf3 (15.Ne6?! Be2 16.Ke2 Ra2+=) 15...Rc8 16.Ne6 Kf7 17.Nf4 (17.Ng5 Kg6 18.Ne4 Rcd8+–) 17...Bc4 18.Nd5 Nd5 19.Bd5 Bd5 20.Rd5 Ra8 21.a3 c4 22.Rd7 Rhd8 23.Rb7 Ra4 (23...Rdb8 24.Rb8 Rb8 25.Ke2+–) 24.Ke2+– h5 25.Rb6 Ba3 26.Ra1 Rda8 27.Ba3 Ra3 28.Ra3 Ra3 29.Rb4 Rc3 30.Kd2 (30...Rd3 31.Kc2+–) 1–0. Gross,Wilhelm – Wobick,R, corr SOK–89–46, 1989.

6.Qf3 Nbd7 =.

6.Qf3 Be7 =.

6.Nf3 a5 7.Be2 Bd6 8.0–0 0–0 (8...Nbd7 9.Nc3=) 9.Ne5 Bb7 10.d3 (10.f4 Nbd7=) 10...Qc7 11.f4 Nbd7 12.Nd7 Nd7 13.Bf3 Rad8 (13...f5 14.Nd2=) 14.g3 (14.Nd2 Be7=) 14...Be7 (14...dc4 15.dc4 Be7 16.Bb7 Qb7 17.Qe2=) 15.Nd2 Bf6 16.Bf6 (16.Qc2 Bb2 17.Qb2 Nf6=) 16...Nf6+= 17.Qe2 Rd7 (17...e5 18.fe5 Qe5 19.Rae1+=) 18.Rad1 (18.Rac1 Rc8=) 18...Rfd8+= 19.Bg2 dc4 20.dc4 (20.Nc4 Nd5 21.Rc1 Nb4=) 20...Bg2–/+ 21.Kg2 Qb7 22.Kg1 (22.Kh3 h6–/+) 22...h6 23.h3 (better is 23.e4!?–/+) 23...Rd3–+ 24.Nf3 Qe4 25.Rd3 Qd3 26.Re1 (26.Qd3 Rd3 27.Ne5 Re3–+) 26...Ne4 (26...Qc3 27.g4–+) 27.Kg2 (27.g4 Qc3–+) 27...f6 (27...Qc3 28.Rb1–+) 28.g4 g5 (28...Qc3 29.Rb1–+) 29.Kh2 (29.h4!? gh4 30.Nh4 Qe2 31.Re2 Nd2–+) 29...Qe2 30.Re2 Kf7 (30...Rd3 31.fg5 hg5 32.Kg2–+) 31.h4 (31.Kg1 Rd3–+) 31...Ke7 32.hg5 hg5 33.Kg2 Rd3 34.fg5–/+ Ng5 35.Ng5+= fg5 36.Kf3 Rc3 37.Rh2 Rc4 38.Rh7 Kf6 39.Rb7 Ra4 40.Rb6 Ra2 41.Rc6= Rc2 42.Ra6 Ke5 43.Ra5 Rb2 44.b6 Kd5 45.Ra7 Rb6 46.Rg7 c4 47.Rg5 e5 48.Rh5? c3–+ 49.Rh1? e4 50.Kf4 Rf6 51.Kg5 Rf3 52.Rd1 Kc5 53.Rd8 Rf1 54.Kh4 Kc4 55.Rd4 Kb3 (55...Kb3 56.Rd7 c2–+) 0–1. Struck,Bernd Dieter (1980) – Hoennekes,Klaus (2100), GER–ch Seniors, 2003.

6.Nf3 a6 7.a4 (7.Qa4 Bd6=+) 7...Bd7 (7...Bd6 8.d4=+) 8.Nc3 Be7 9.Be2 0–0 10.0–0 Qc7 11.Qc2 e5 (better is 11...Rd8!?=) 12.cd5 ab5 (12...Qd6 13.e4 Nh5 14.a5+/–) 13.ab5 (13.Nb5 Bb5 14.Be5 Qe5 15.Ne5 Be2+–) 13...Ra1 14.Ra1 c4 (14...Bd6 15.d3+/–) 15.Qa4 (15.Ra4 Bc5+–) 15...e4 16.Nd4 (16.Ng5 Qe5 17.f4 ef3 18.Nf3 Qh5+–) 16...Ng4 (16...Rc8 17.Nc6 Bd6 18.h3+–) 17.Bg4 Bg4 18.Ne4 Qe5 (18...Rd8 19.Nc6 Nc6 20.Qc4 Bf5 21.dc6 Bf8+–) 19.Bc3?? (better is 19.f3+–) 19...Qe4= 20.f3 Bf3 21.Nf3 Qd5 22.Qa7 Nd7 23.Qc7 Qb5? 24.Ra7?? Bf6?? 25.Qd7+– Qb1 26.Kf2 Bc3 27.dc3 Qc2 28.Qd2 Qe4 29.Rd7 h6 30.Rd8 Rd8 31.Qd8 Kh7 32.Qd4 Qc2 33.Nd2 Qf5 34.Qf4 Qa5 35.Qc4 b5 36.Qb4 Qd8 37.Ke2 Qd5 38.Qe4 1–0. Kasper,Peter – Schrodt,Horst, Spree op, 1997.

6.Nf3 Be7 7.Be2 Bb7 8.0–0 0–0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5).

6.f4 Bb7 7.Nf3 a6 8.a4 (8.ba6 Na6 (< 8...Ra6 9.cd5 Ra5 10.Bc3+/–) 9.cd5 Bd5 10.Bb5 Nd7=) 8...ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.Be2 Be7 12.0–0 0–0 13.Ne5 (13.d3 dc4 14.dc4 Ne4=) 13...Ne5 (better is 13...Qa8!? 14.Nc6 Bc6 (14...Qa1?! 15.Ne7 Kh8 16.Bf3+=) 15.bc6 Qa1 16.cd7 Nd7–/+) 14.fe5= Nd7 15.Bb2 (15.Bf3 Qa8 16.Bc3 dc4 17.Bb7 Qb7=+) 15...Qa8 (15...Qc7 16.d4=+) 16.Rf2= Qa2 17.Qc1 f5 (17...f6 18.Bg4 f5 19.Bf3=) 18.ef6 (18.d4 Qa8+=) 18...Bf6= 19.Bf6 Rf6 20.Rf6 Nf6 21.Bf3 Kf7 (21...e5 22.d3=) 22.d3 (22.d4 Qa8+=) 22...Qb3 23.Qd1 (better is 23.d4!?+=) 23...Qd1=+ 24.Bd1 dc4 25.dc4 Nd7 (25...Be4 26.Nc3=+) 26.Be2 Be4 27.Nd2 ½–½. Sundin,Thommy (2015) – Sandstroem,Rune (1985), Gausdal, 1989.

6.g3 a6 7.ba6 Na6 8.Bg2 =+.

6.g3 Bb7 7.Bg2 Be7 (7...a6 8.ba6 Na6 9.Ne2=+) 8.d3 (8.Nc3 a6=+) 8...Qc7 (8...0–0 9.Ne2=+) 9.Nf3= Nbd7 (9...dc4 10.dc4 Nbd7 11.0–0=) 10.0–0 (10.cd5 ed5 11.Na3 0–0=) 10...0–0 11.Nbd2 (11.Na3 dc4 12.Nc4 a6=) 11...a5 (11...a6 12.Qa4=+) 12.Rc1 (12.cd5 Bd5 13.e4 Bb7=) 12...Rad8 (12...e5 13.d4 e4 14.Nh4=) 13.d4 dc4 (13...Rc8 14.Qe2=) 14.Nc4 Bd5 15.Nfd2 (15.Qe2 Rc8=) 15...Bg2 (15...Qb7 16.f3=) 16.Kg2 Qb7 (16...Qb8 17.f4=) 17.Qf3 Qf3 18.Kf3 Nd5 19.Ke2 f5 20.f3 (20.e4 fe4 21.Ne4 Rf5+=) 20...Nc7 (20...Bf6 21.Ba3=) 21.a4+= Nd5 (21...Rc8 22.e4+=) 22.e4 (White gets the initiative) 22...Nb4 23.Nb3 cd4 24.Nd4 Nc5 25.Nb6 Nbd3? 26.Nc6+– Nc1 27.Rc1 Nb3? 28.Rc2 Bc5 29.Nd8 Rd8 30.Nc4 fe4 31.fe4 Rf8 32.Ne3 Rd8 33.Nc4?? Rf8 34.Ne3?? Rd8 35.Nd1 Bd4 36.Ne3?? Bc5 37.Ng4 Bd4 38.Ne3?? Bc5= 39.Ng4?? (better is 39.h3+–) ½–½. Streit,Bodo – Krueger,Thomas, Landesliga2 West, 2000.

6.a4 a5

7.Nf3 Bb7 8.Na3 (8.h3 dc4 9.Bc4 Bf3 10.gf3 Be7=) 8...Nbd7 9.Nc2 (9.h3 h6=) 9...Be7 10.Rc1 (10.h3 Nf8=) 10...0–0 (10...Qc7 11.cd5 ed5 12.g4=) 11.Be2 (11.Na3 Qc8=) 11...Qc7 12.d4 (12.h3 Rfe8+=) 12...Rfd8 (12...dc4!? 13.Bc4 cd4 14.Ncd4 Bb4 15.Kf1 Nc5 16.Be6 fe6 17.Ne6 Qf7 (17...Ne6?! 18.Rc7 Nc7 19.h4+=) 18.Nf8 Rf8 (18...Qf8?! 19.Bd4=) 19.Bf6 Qf6–+ (19...gf6?! 20.Nd4=)) 13.0–0 dc4 14.Bc4 (14.Na3 Ng4 15.h3 c3 16.Bc3 Ndf6+=) 14...Ng4 15.Nce1 Rac8 16.h3 White threatens to win material: h3xg4 16...Ngf6 17.Qb3 Qb8 (17...h6 18.Be6 fe6 19.Qe6 Kf8 20.Ne5 Ne5 21.de5–/+) 18.Ne5 (18.Be6 fe6 19.Qe6 Kh8–/+) 18...Ne5 19.de5 White has new doubled pawns: e3+e5. Black has a new protected passed pawn: c5. 19...Nd5 20.f4 ½–½. Kalanyos,Ferenc – Javor,Sandor, HUN–chT2 Asztalos, 2002.

7.Nf3 Nbd7 8.d3 Bd6 9.Nbd2 0–0 10.g3 Bb7 11.Bg2 Qc7 12.0–0 Ne5 13.Qc2 Nfd7 14.Rac1 Nf3 15.Nf3 Ne5 (15...dc4 16.Qc4 Rac8 17.Rfd1=) 16.Rfd1 (16.Be5 Be5 17.cd5 Bd5+=) 16...Ra7 (better is 16...Nf3!? 17.Bf3 dc4=) 17.Ne5+/– Be5 18.Be5 Qe5 19.d4 cd4 20.ed4 (worse is 20.Rd4 Rc8+=) 20...Qb8 21.c5 Ba8 22.c6 Qd6 23.Qe2 Rc7 24.f4 g6 25.Qe5 Rd8 26.Qd6 Rd6 27.g4 f5 28.gf5 gf5 29.Rd3 Bb7 30.Kf2 Bc8 31.Rg3 Kh8 32.Bf3 Rd8 33.Rcg1 Rf8 34.h4 Re7 35.Bh5 Rc7 36.Re1 (36.Ke3 Rd8+–) 36...Re7 37.Rc3 Rc7 38.Bf3 Kg7 39.Bh1 Kh8 40.Rce3 Rf6 41.Rg1 Rf8 (41...Rg6 42.Rg5+–) 42.Re5 (42.Reg3!? Re8+–) 42...Rd8 43.h5 Rg7 44.Rg7 Kg7 45.Re3 Rf8 ½–½. Beloshapkin,Konstantin (2025) – Terchanyan,Zograb (1900), Tomsk RUS, 2012.

7.h3 dc4 8.Qf3 Nd5 =.

6.d4 Bb7

7.Qc2 dc4 8.Qc4 a6 9.ba6 Na6 10.Nf3 =+.

7.Qc2 Nbd7 8.Nd2 Rc8 9.dc5 Bc5 10.Ngf3 0–0 (10...a6 11.ba6 Ba6 12.Qb3=+) 11.Rc1 (11.Qa4 Be7=) 11...Qe7 (11...Bd6 12.Be2=+) 12.Be2 Ne4 (12...a6 13.ba6 Ba6 14.0–0=+) 13.0–0 f5 (13...Nd2 14.Qd2 Nf6 15.cd5 Bd5 16.Qc2=) 14.Qd3 (14.Qa4 Ndf6=) 14...Rcd8 (14...Bd6 15.cd5 Ndc5 16.Qd4 Nd2 17.Nd2=) 15.Qc2 Bd6 (15...Nd2 16.Qd2 dc4 17.Qc3= (< 17.Rc4 Bf3 18.Bf3 Ne5–/+)) 16.Ne1 (16.cd5 Nd2 17.Nd2 Rc8=) 16...Nd2=+ 17.Qd2 Nf6 18.Bf6 (18.cd5 Ne4 19.Qd3 Bd5=+) 18...Rf6 19.Bf3? (better is 19.Qc2=+) 19...Bh2!–+ 20.Kh2 Rh6 (21.Kg1 Qh4–+) 0–1. Nederlof,GC – Talbot, corr, 1985.

7.Qc2 Nbd7 8.Nd2 cd4 9.Bd4 e5 10.Bb2 =+.

7.Nc3 cd4 8.Qd4 Bc5 9.Qh4 =.

7.Nc3 Nbd7 8.cd5 Nd5 9.Nf3 Rc8 =.

7.Nc3 Nbd7 8.Nf3 dc4 (Black is in command) 9.Bc4 cd4 10.ed4 (10.Qd4!? Bf3 11.gf3=) 10...Rc8=+ 11.Bd3 (11.Qa4 Bf3 12.gf3 Qc7=+) 11...Bb4–/+ 12.Rc1 Nd5 13.Qb3 Nf4 14.Be2 (14.Bf1 Ba5–/+) 14...Ba5 (14...Ng2 15.Kf1 Bc3 16.Rc3–+) 15.Rc2 (better is 15.Kf1!?–/+) 15...Ng2–+ 16.Kf1 Nh4 17.Nh4 (17.d5 Bc3 18.Rc3 Bd5–+) 17...Bh1 18.Nf3 0–0 19.Ne4 Rc2 20.Qc2 Qc8 (21.Qb3 Rd8–+; 20...Nf6 21.Ng3 Bf3 22.Bf3–+) 0–1. Haralambof,V – Sermet,C, corr TUR, 1965.

7.Nd2 Nbd7 8.Ngf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.d4 Nbd7 8.Nbd2).

7.Nf3 a6 =.

6.cd5 Nd5

7.Bc4 Bb7 8.Nf3 Nd7 (8...Be7 9.0–0 0–0 10.d4=) 9.d3 (9.0–0 N7f6=) 9...N7f6 (9...Be7 10.e4 Nc7 11.0–0=) 10.e4 Nc7 11.Nbd2 (11.0–0 Be7=) 11...Be7 12.0–0 0–0 13.a4 Nd7 (13...a6 14.ba6 Na6 15.Re1=) 14.a5 a6 15.ab6 (15.ba6!? Ba6 16.ab6 Nb6 17.Qc2+=) 15...Nb5=+ 16.Qb3 (16.Ra5 Qb6 17.Qa1 Bf6 18.Bf6 Nf6=) 16...Qb6 17.Rfb1 Bd6 (17...Rfb8 18.Qc2=+) 18.Be6 (18.Bc3 Rfb8=+) 18...Bh2 19.Kh2 (19.Nh2 Qe6) 19...Qe6 (19...Qd6 20.Kg1 fe6 21.Nc4=+) 20.Qe6 fe6 21.Rc1 (21.Nc4 Nf6=+) 21...Rac8 (21...e5!?–/+) 22.Nb3= h6 23.Rc2 Nd4 24.Nbd4+= cd4 25.Rc8 Rc8 26.Bd4 Rc2 27.Kg3 Kf7 28.Kf4 Nf6 29.Ne5 Ke7 30.g4 Ne8 31.Rb1 Bc8 32.Nc4 Nf6 33.Rb8 Kd8 34.Nb6 Ne8? 35.Ra8+– Rc7 36.Nc8 Rc8 37.Ra6 Ke7 38.Ra7 Kf8 39.Ke5 Rc6 40.Rb7 Nf6 41.f3 Nh7 42.Kf4 Nf6 43.Bf6 gf6 44.Rh7 Rc1 45.Rh6 Kg7 46.Rh2 Rd1 47.Ke3 Kg6 48.f4 Rg1 49.f5 ef5 50.gf5 Kg7 51.Kd4 Rd1 52.Rh3 Ra1 53.Kd5 Ra5 54.Kc4 Ra4 55.Kc5 Ra5 56.Kb4 Ra1 57.d4 Re1 58.Rh4 Rc1 59.d5 Kf7 60.Rh7 Ke8 61.d6 Rc6 62.Re7 1–0. Diener,Rudolf – Tiagunov,G, corr ICCF WT–M–242, (year?).

7.Nf3 Bb7 8.Nc3 f6 9.Be2 Be7 10.0–0 0–0 11.Qc2 Nd7 (11...a6 12.Nd5 Qd5 13.Rfd1=) 12.e4 (12.Qe4 Ne5 13.Ng5 g6=) 12...Nc3 (12...Nf4 13.Bc4 f5 14.d4=) 13.Bc3 (13.dc3 Qe8+=) 13...e5 14.Bc4 Kh8 15.Rfe1 (15.Nh4 g6+=) 15...Qc7 (15...a6 16.Rab1=) 16.Nh4 Rfd8 17.Re3 Nf8 18.Nf5 Ng6 19.Bf7 (19.Rg3 a6+=) 19...Nf4= 20.Bc4 a6 21.a4 ab5 22.ab5 Ra1 23.Ba1 Qd7 24.Bc3 Qe8 25.Qd1 (25.g3 Ng6=) 25...Bf8= 26.Qb3 (26.Qg4 Qh5 27.Qh5 Nh5=) 26...Rd7 27.Qc2 Qa8 28.f3 Qe8 29.Ba2 g6 30.Qb3 Bg7 31.Ng3 Bc8 32.Ne2 Ne2 33.Re2 Re7 34.Qa4 Be6 35.Be6 Re6 36.Re1 Qb8 37.Ra1+= h5 38.Qc4 Qg8 39.Qd5 Re8 40.Qd7 Ra8 41.Ra6 Qb8 42.Qc6 Ra6 43.ba6 Qa7?? 44.Qb7 (44...Qb7 45.ab7+–) 1–0. Wessel,Volkmar – Coldewey,Brar, Schleswig Holstein–chG, 1990.

6.Nf3 Bb7

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

7.Be2 Bd6 8.0–0 0–0 9.d4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.d4 Bb7).

7.Be2 Nbd7 8.0–0 Rc8 9.d3 Bd6 10.Nbd2 0–0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.d3 Bb7 10.Nbd2 Rc8).

6.Nf3 dc4

7.Bc4 Bb7 8.0–0 Nbd7 9.Ne5 Ne5 10.Be5 Be7 11.f3 Nd5 (11...0–0 12.Qe2=) 12.a4 (12.Bg7 Rg8 13.Be5 Bf6 14.Bf6 Qf6+=) 12...f6 13.Bd5 (13.Bb2!?=) 13...Qd5 14.Bb2 Rd8 15.Re1 Qd3 16.h3 Qg6 17.e4 0–0 18.d3 c4 19.d4 (19.dc4 Rd1 Pinning (19...Rd1 Deflection; 19...Bc5 Decoy)) 19...Qg3 20.Nd2 Bd6 21.Nf1 (worse is 21.Nc4 Qh2 22.Kf1 Bg3–+) 21...e5?? (21...Qg6 22.Qc2=) 22.d5 (better is 22.Ng3 ed4 23.Nf5+–) 22...Qg6 (22...Qh4 23.Qc2=) 23.Ne3 (23.Qe2 Bb4 24.Rec1 Bc5 25.Kh1 f5 26.Qc4 fe4 27.Qe4 Rd5 28.Qg6 hg6+=) 23...Bc5 (23...Bb4 24.Re2+=) 24.Kh2 Be3 (24...Qh6 25.Qe2 Qf4 26.Kh1 Be3 27.Qe3 Qe3 28.Re3 Bd5 29.ed5 Rd5+/–) 25.Re3+= f5 26.Be5 fe4 27.fe4 Rfe8? (better is 27...Qg5 28.Bd4 Qf4 29.Rg3 g6+/–) 28.Bc3 (better is 28.Rg3 Re5 29.Rg6 hg6 30.Qd4+–) 28...Re4 (28...Rd5 29.Qe2 Rd3 30.Rd3 cd3 31.Qd3 Re4= (worse is 31...Qe4 32.Qg3 Qg6 33.Qg6 hg6 34.Rd1+/–)) 29.Re4 (29.Rg3 Qd6 30.Bg7 Qg3 31.Kg3 Rd5 32.Qc2 Rg5 33.Kh2 Rg7 34.Rd1+–) 29...Bd5?? (29...Qe4 30.Qe1 Qf4 31.Kg1 Qg5–/+ (worse is 31...Bd5 32.Qe7 Qf8 33.Re1=; worse is 31...Rd5 32.Qe7 Qf7 33.Qf7 Kf7 34.Rf1 Kg8 35.Re1–/+)) 30.Rg4+– Qd6 31.Kg1 g6 (31...Rd7+–) 32.Qd4 Qc5 33.Kh1 (better is 33.Kh2 Qd4 34.Rd4+–) 33...Bg2 (33...Bg2 34.Kg2 Rd4 35.Rd4 Qg5 36.Kf2 Qf5 37.Ke2 Qc2 38.Bd2 Qb2 39.Rd8 Kf7 40.Rf1 Ke7+/–). Valpa – Ulibear, playchess.de, 2004.

7.Bc4 Bb7 8.d3 Nbd7 9.Nbd2 Be7 10.0–0 0–0 11.Qc2 Rc8 12.a4 (12.Rfd1 Ra8+=) 12...Bd6 (12...Nd5 13.Bd5 Bd5 14.e4=) 13.Qc3 (13.Rfd1 Re8+=) 13...Qc7 (13...Bc7 14.Ne4+=) 14.a5 ba5 (14...Rfd8 15.Ne4+=) 15.e4 Ne5?? (better is 15...Bf4+/–) 16.Ne5+– 1–0. pcmvr (2225) – nstone (2195), net–chess.com, 2006.

6.Nf3 Nbd7

7.a4 a5 8.ba6 Ba6 9.Na3 Bd6 10.Qb3 0–0 11.Be2 Bb7 12.Nb5 Bb8 13.0–0 e5 14.cd5 e4 15.Nh4 Bd5 16.Qc3 Ne5 17.f4 ef3 18.Bf3 Bf3 19.Nf3 Ne4 20.Qc2 Nf3 21.Rf3 Qd2 22.Qb3 c4 23.Qa3 Nc5 24.Raf1 Ra4 25.Qc3 Qc3 26.Bc3 Ne4 27.Rb1 Rc8 28.Rd1 f6 29.g4 Ra2 30.Rf4 Bf4 31.ef4 Nc3 32.Nc3 0–1. Semenov,Viktor – Ghukov,Viktor, Novorossiysk, 1996.

7.a4 Bb7 8.Be2 Qc7 9.0–0 Ng4 10.h3 h5! 11.g3 Bd6 12.hg4? hg4 13.Nh4 Bg3 14.fg3 Qg3 15.Ng2 d4 0–1. Klarius – Rafnung, corr EU–M 1987.

7.Qc2 Bb7 8.d4 dc4 9.Nbd2 cd4 10.Bd4 Be7 11.Bc4 0–0 12.0–0 Nc5 13.Rfd1 Rc8 14.Qb2 Nce4 15.Ne4 Be4 16.Be5 Rc4 17.Rd8 Rd8 18.Nd4 Nd7 19.Bg7 e5 20.Nc6 Kg7 21.Qe2 Rc6 22.bc6 Bc6 23.Qa6 Ra8 24.Qc4 Nc5 25.Qg4 Kf6 26.f4 e4 27.Rc1 Re8 28.Qg5 Ke6 29.Qe5 Kd7 30.Qf5 Kd8 31.Qf7 Bd7 32.Qd5 a5 33.Qa8 Kc7 34.Qe4 h6 35.Qg6 Bd6 36.Kf2 Re6 37.Qh7 Kd8 38.Qh8 Ke7 39.Qg7 Ke8 40.Rc4 Nd3 ½–½. Zwerenz – A Fischer, corr SOK–87–15.

7.Nc3 Bb7 8.cd5 ed5 9.d4 Bd6 10.dc5 bc5 11.Be2 0–0 12.0–0 a6 13.a4 ab5 14.Nb5 Be7 15.Ne5 Ne5 16.Be5 Qd7 17.Qc2 c4 18.Rad1 Bc6 19.Bc4 Ra5 20.Bf6 Bf6 21.Bd5 Bb5 22.ab5 Qb5 23.Be4 Qh5 24.Rd7 Be5 25.f4 Bf6 26.Rf3 Qh4 27.Rd1 Ra1 28.Rh3 Rd1 29.Qd1 Rd8 30.Qe2 1–0. Wall,Bill – Farmer,Steve, Palo Alto, 1989.

7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Nbd7).

7.Be2 Be7 8.0–0 0–0 9.d4 Bb7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5 9.d4 Nbd7 10.Nbd2).

6.f4 Be7

7.Nf3 0–0 8.Be2 a6 =+.

7.Nf3 0–0 8.Ng5 Nbd7 9.Bd3 dc4 (9...a6 10.0–0=+) 10.Bc4 Bb7 (10...Nd5 11.Qg4 N7f6 12.Qg3=+) 11.Bd3 (11.0–0 a6=+) 11...Rc8 (11...a6 12.0–0=+) 12.Qc2 g6 (12...h6 13.Nf3=+) 13.h4 (13.0–0!?=) 13...c4 (13...Bg2 14.Rg1 Bd5=+) 14.Bg6 (better is 14.Bf1!? Nd5 15.Bc4=+) 14...hg6–+ 15.h5 (better is 15.Ne6 Be4 16.Nd8 Bc2 17.Nc6–+) 15...Nh5?? (Opening the h–file gets White a lot of play) (better is 15...Nc5 16.hg6 Qd3 17.gf7 Rf7–+) 16.Rh5= c3 17.Nc3 Bg5 18.Rg5 Qe7 19.Ba3 Nc5 20.Ke2 Qf6 21.Qd1 Qg7 22.Qh1 Rfd8 23.Bc5 Rc5 24.Rc5 bc5 25.Qh4 Rd7 26.g4 Be4?? 27.Ne4+– Rd2 28.Nd2 Qa1 29.Qd8 Kg7 30.Qa5 Qb2 31.Qa4 Kg8 32.Qc4 Qa3 33.Ne4 Qb2 34.Kf3 Qb1 35.Nf2 Kg7 36.a3 Qe1 37.Qc5 Qa5 38.Ne4 (38...Qe1 39.Nc3+–) 1–0. Mroz,Antoni – Wojtyczko,M, corr Poland, 1985.

7.Nf3 0–0 8.Ng5 h6 9.Nf3 =+.

7.Nf3 Nbd7 8.Nc3!?= a6 9.Be2 0–0 (9...dc4 10.0–0 Bb7 11.Bc4 ab5 12.Nb5 0–0 13.Qc2 Nd5 14.f5 Nb4 15.Qb1 e5=; 9...ab5 10.Nb5 dc4 11.Bc4 0–0 12.0–0 Nd5 13.Qb3 Ba6 14.f5 Bb5 15.Bb5 Bf6=) 10.0–0 dc4 11.Bc4 ab5 12.Nb5 Bb7 13.Qc2 Nd5 14.f5 Nb4 15.Qb1 e5 =.

7.Nf3 Nbd7 8.d3 Bb7 (8...a6 9.ba6 0–0 10.Be2 Ba6 11.0–0 dc4 12.dc4 Qc7 13.Bd3 Rfd8 14.Qc2 Bb7 15.Nc3 h6=; 8...0–0 9.Be2 a6 10.ba6 Ba6 11.0–0 dc4 12.dc4 Qc7 13.Bd3 Rfd8 14.Nc3 Bb7 15.Qc2 h6=) 9.Be2 0–0 (9...Ng4 10.Qd2 A) 10...dc4 11.dc4= (11.Bg7 Rg8 12.Bc3 cd3 13.Bd3 Ndf6 14.Qe2 Rc8 15.Bc2 c4=) 11...Bh4 12.g3 Bf6 13.Nc3 Qe7 14.h3 Nh6 15.e4 0–0–0=; B) 10...0–0 11.0–0 Bf6 12.d4 dc4 13.Ne5 Nh6 14.Nc4 Bd5 15.Nc3 Bc4=; 9...a6 10.ba6 Ra6 11.0–0 0–0 12.Nc3 Qa8 13.d4 Ra5 14.Rc1 Rc8 15.Qb3 Ng4–/+; 9...dc4 10.dc4 0–0 11.0–0 Qc7 12.Nc3 Rfd8 13.Qc2 Ng4 14.Qc1 a6 15.Rd1 ab5=) 10.0–0 dc4 (10...Qc7 11.Ne5= (11.Na3 Rfd8 12.Ng5 h6 13.Nf3 a6 14.ba6 Ra6 15.Nb5 Qc8=) 11...dc4 12.Nc4 a6 13.Nba3 Nd5 14.Bf3 Bf6 15.Rb1 Bb2=) 11.dc4= Ne4 (11...Qc7 12.Nc3= Rfd8 13.Bd3 a6 14.Qc2 ab5 15.Nb5 Qc6=) 12.Nbd2 (12.Nc3 Bf6 (12...a6 13.Qc2 f5 14.Rfd1 Bf6 15.Ne4 Be4=) 13.Ne4 Bb2= 14.Rb1 Be4 15.Rb2 Qe7=) 12...Nd2 (12...Nd6 13.Bd3= (13.Qc2 a6 14.Rfd1 ab5 15.cb5 Bf6=) 13...a6 14.Qc2 f5 15.ba6 Ra6=; 12...a6 13.Qc2 Nd2 14.Nd2 Bf6 15.Bf6 Nf6=) 13.Qd2+= Bf6 (13...Qc7 14.Qc2 f5 15.Rfd1 Rfd8=) 14.Rad1 Bb2 15.Qb2 Qe7 (15...Qc7 16.Rd2+=) 16.Rd2 Rfd8 17.Rfd1 Nf6 18.Ne5 Rd2 19.Rd2 Rd8 (19...Qc7 20.g4 Rd8 21.Rd8 Qd8 22.Nc6+=) 20.Bf3 (20.Nc6!? Bc6 21.Rd8 Qd8 22.bc6+=) 20...Rd2 21.Qd2 Bf3 22.gf3 h6 (22...Ne8 23.Qc2=) 23.Nc6 Qc7 24.a4 Nd7 25.e4 Kf8 26.e5 a5?? (26...Ke8 27.a5 ba5 28.Na5=) 27.Qd3 (better is 27.ba6 Qc6 28.Qd6 Qd6 29.ed6+–) 27...g6 (27...Ke8 28.Kf2 Nf8 29.f5=) 28.Qe3 Nb8 29.Nb8 (29.f5 g5 (29...ef5 30.Qh6 Kg8 31.e6 Nc6 32.ef7 Qf7 33.bc6+/–) 30.fe6 Nc6 31.bc6 Qc6 32.ef7 Kf7+= (32...Qa4 33.e6 Qa1 34.Kg2 Qb2 35.Kg3+–)) 29...Qb8= 30.f5 ef5 31.Qh6 Kg8 32.e6 Qe8 33.ef7 Qf7 34.Qf4 Qe6 35.Kf2 ½–½. De Visser,Arno – Rietveld, 1999.

7.Nf3 Nbd7 8.Be2 A) 8...dc4 9.Na3 (9.Bc4 Bb7 10.0–0 a6 11.Ne5 ab5 12.Bb5 0–0 13.Nc6 Qe8 14.a4 Bd6 15.Qf3 Qc8=) 9...0–0 (9...a6 10.Bc4 0–0 11.0–0 Nd5 12.f5 Bf6 13.Bf6 N7f6 14.fe6 fe6 15.Qb3 Qd6=) 10.0–0 a6 11.Bc4 ab5 12.Nb5 Bb7 13.Qc2 Nd5 14.f5 Nb4 15.Qb1 e5=; B) 8...a6 9.Nc3 (9.Ne5 0–0 10.Nc6 Qe8 11.Nc3 Bb7 12.cd5 Nd5 13.Ne7 Qe7 14.0–0 ab5 15.Bb5 Rfd8=) 9...dc4 (9...0–0 10.0–0 ab5 11.Nb5 dc4 12.Bc4 Bb7 13.Qc2 Nd5 14.f5 Nb4 15.Qb1 e5=; 9...ab5 10.Nb5 dc4 11.Bc4 0–0 12.0–0 Nd5 13.Qb3 Ba6 14.f5 Bb5 15.Bb5 Bf6=) 10.Bc4 ab5 11.Nb5 0–0 12.0–0 Bb7 13.Qc2 Nd5 14.f5 Nb4 15.Qb1 e5=.

7.g4 0–0 =+.

5.c4 dc4

6.Bc4 a6 7.ba6 b6 8.Qf3 Nd5 9.Nc3+= Nc7 10.a4 Ba6 11.Nb5 Nd5 12.Bd5 ed5 13.Qd5!? Qd5 14.Nc7 Kd8 15.Nd5 Bb7 16.e4 Bd5 17.ed5 f6 18.Bc3 Bd6 19.Nf3 Re8 20.Kd1 Nd7 21.Re1 Ne5 22.Be5 Be5 23.Ne5 Re5 24.Re5 fe5 25.Ke2 Kc7 26.Ra3 Kd6 27.Rb3 Ra6 28.a5 ba5–/+ 29.Rb7 Kd5 30.Rg7 a4 31.Rd7? Kc6 32.Rh7 (32.Rd8 a3 33.Rc8 Kd6 34.Rd8 Ke6 35.Re8 Kf7 36.Re5 a2 37.Rf5 Ke7–+) 0–1. Hirtreiter – Schmitz, BdF, 1988.

6.Bc4 b6

7.Qf3 Nd5 8.Nc3 Nc7 9.Nge2 Nd7 10.d4 Rb8 (10...cd4 11.ed4 a6 12.0–0+=) 11.0–0 Bb7 12.e4?? (better is 12.Qg3+=) 12...cd4–/+ 13.Nd4? (better is 13.Na4 Ne5 14.Qb3 Nc4 15.Qc4–/+) 13...Ne5–+ 14.Qe2 Qd4 15.Bb3 Qd8 16.Rad1 Qh4 17.g3 (better is 17.Nd5 Bd6 18.f4–+) 17...Qh3?? (17...Qg4 18.Qg4 Ng4 19.a3–+) 18.f3? (better is 18.Nd5 ed5 19.Be5–/+) 18...Bc5–+ 19.Kh1 0–0 (19...Qh5!? 20.g4 Qg5 21.f4 Qg4 22.Qd2–+) 20.Na4 Ng6 21.Rd7? (21.Nc5 bc5 22.Ba3 Rfc8–+) 21...Rbc8 (better is 21...Nb5 22.Rc1 Bc8–+) 22.Be6?? (22.Nc5 bc5 23.Rc1–+) 22...Ne6 (22...Qe6 23.Qd3–+) 23.Rb7 Ngf4! 24.gf4 (24.gf4 Nf4 Combination) 24...Nf4 25.Qd2 Qf1# 0–1. Bertram,Joe – Schuster,Rudolf (1650), Blankenburg op–B, 2005.

7.Nf3 Be7 8.0–0 0–0 9.d4 Bb7 10.Nbd2 Nbd7 11.Qe2 Rc8 12.Rfd1 cd4 13.Nd4 Bc5 14.N2b3 Qe7 15.Nc5 Nc5 16.Ba3 Rfd8 17.f3 Qe8 18.e4 Rc7 19.Nc6 Rd1 20.Rd1 Bc6 21.bc6 h6 (worse is 21...Rc6 22.Bb5 Qc8 23.Bc6 Qc6 24.Rd8 Ne8 25.Qc4+–; 21...Qc6?? 22.Rd8 Qe8 23.Re8 Ne8 24.Bb5+–) 22.Bb5 Qf8 23.Rc1 Qd8 24.Rd1 Qf8 25.Qe3 a6 26.Ba4! Qc8 (26...Na4 27.Bf8 Pinning (27.Bf8 Deflection)) 27.Bc5 bc5 28.Qc5 Qb8 29.Qd4 Kh7 30.Rd2 a5 (30...Qb1 31.Kf2 Qc1 32.Qd6+/–) 31.Rb2 Qc8 32.Kf2 Qa6? (32...Ng8 33.Qe5+/–) 33.Bb5 (better is 33.e5!? Nd5 34.Rb8+–) 33...Qa8 34.Rd2 Qb8 35.a4 Re7 36.g3 e5 37.Qc5 Qc7 38.Ke2 (38.Qd6 Qb6 39.Kg2 Re8+–) 38...g6? (better is 38...Re6!?+/–) 39.Qd6+– Kg7 (39...Ne8 40.Qc7 Nc7 41.Rd7 Rd7 42.cd7+–) 40.Qc7 Rc7 41.Rd8 Ng8 42.Rb8 h5 (42...Nf6 43.Ke3+–) 43.Rb7 Rc8 44.Ra7 Kf8 (44...Nf6+–) 45.c7 (worse is 45.Ra5 Ne7 46.Ra6 g5+–) 45...Ne7 46.Bd7 1–0. Sieber,Martin – Hasinski,Sebastian, Orlova op, 2005.

7.f4 Bb7 8.Nf3 Be7 9.d3 0–0 10.0–0 Nbd7 11.Nbd2 Nd5 12.Qe2 a6 13.a4 Bf6 14.ba6 Ba6 15.Ne5 Ne5 16.fe5 Be7 17.Ba6 Ra6 18.d4 Qc7?? 19.Qa6+– (19...Bg5 20.Qd3 Be3 21.Kh1 Bd2 22.Qd2+–) 1–0. Howes,Tony – Verhaeren,Gertjan, TE.2004.P.01713, 2004.

7.Nf3 Bb7

8.0–0 Bd6 9.d4 Nbd7 10.Nbd2 0–0 11.a4 Rc8 12.Rc1 Qc7 13.h3 Ne4 14.Be2 Ndf6 15.Nc4 Be7 16.Nfd2 ½–½. Schwichtenberg,Juergen (1635) – Berndt,Wolfgang, GER–ch Seniors–B, 2008.

8.0–0 Nbd7!? =.

8.0–0 g6 9.d3 Bg7 10.Nc3 0–0 11.Qb3 Nbd7 12.Ne4 Ne4= 13.Bg7 Kg7 14.de4= Be4 15.Be2 Qf6 16.Nd2 Bb7 17.e4 Ne5 18.f4= Nd7 19.e5 Qe7 20.Bf3 Bf3= 21.Nf3 Rfd8 22.Ng5 h6 23.Ne4 f5 24.ef6 Nf6=+ 25.Nf6 Qf6 26.a4 Rd4 27.f5 ef5–+ 28.a5 Rb4 29.Qd3 Rd8 30.Qf3 Rd7 31.ab6 ab6 32.Ra6 Rbd4 33.Ra8 R4d6 34.h3 Qd4 35.Kh2 Re6 36.Rc8 h5 37.Qa8 Qe5 38.Kh1 Kf6 39.Rf8 Kg5–+ 40.Qf3 Qe3 41.Qe3 Re3 42.Rb8 Rb3 43.Rb6 c4 44.Rc6 (44…h4 45.Rc4 Rb5 46.Rc2–+; 44.h4!? Kh6 45.Rf5 Rb1 46.Kh2–/+). stoker – Putte21, Caissa's Web, 2004.

8.0–0 g6 9.d3 Bg7 10.Nbd2 a6 +/–.

8.0–0 g6 9.d4+= Nbd7 10.dc5 Bc5 11.Nd4 0–0 12.Ne6 fe6 13.Be6 Rf7 14.Qb3 Qe7 15.Rd1 Re8 16.Bf7 Qf7 17.Qf7 Kf7 18.a4 Re6 19.Na3 Rd6 20.Nc4 Rd1 21.Rd1 Bd5 22.Rc1 Ne4 23.Ba3 Ba3 24.Na3 Ndc5 25.a5 Ke6 26.ab6 ab6 27.Nc4 Bc4 28.Rc4 Nd6 29.Rc1 h5 30.f3 Kd7 31.Ra1 Nb5=+ 32.Ra8 Ke6 33.h4 Nd6 34.g4 b5 35.gh5 gh5 36.Rh8 b4 37.Rh5?? b3–+ (38.Rc5 b2–+) 0–1. Koerner – Schiedeck, (year?).

8.d4 cd4 9.Bd4 Bb4 10.Nbd2 Ne4 =.

8.0–0 Be7

9.d4 a6 10.Nc3 =.

9.d4 Nbd7 10.Nc3 0–0 11.Ng5 (11.d5 ed5 12.Nd5 Bd5 13.Bd5 Nd5 14.Qd5 Bf6=) 11...h6 (Black fights for the Initiative) 12.Nh3 (12.Nf3 a6=) 12...Rc8 13.Bd3 cd4 14.ed4 Nd5 15.Qf3 (15.Nd5 Bd5 16.Nf4 Bb7=) 15...N7f6=+ 16.Be4 (16.Nd5!? Bd5 17.Qe2=+) 16...Ne4–/+ 17.Ne4 Rc2 18.Rab1 Qa8 19.Qd1 (19.Qb3 Nb4 20.f3 Bd5–+) 19...Rfc8–+ 20.Re1 Nb4 21.d5 (21.f3 Na2 22.Re2 R2c7–+) 21...Nd5 (better is 21...Bd5 22.Ba1 Ra2–+ (22...Ba2?! 23.Qg4 g6 24.Qf4–+; < 22...Na2 23.Qg4 g6 24.Nf6 Bf6 25.Bf6–+)) 22.Qg4–/+ Rb2 23.Rb2 f5 24.Qg6 fe4 25.Qe6 Kh8 26.Qe4 Bf6 27.Rb3 Nc3 28.Qg4 Bd5 29.Ra3 Nb5 30.Rd3 Ba2 31.Nf4 Bf7 32.Qf5 Qc6 33.Nh5 Bh5 34.Qh5 a5 35.Rde3 Kh7 36.h3 a4 37.Re8?? Re8 38.Re8 a3 39.Qf5 g6 40.Re7 Bg7 41.Qe5–/+ Qc3 42.Rg7 Kh8 43.Rg8? Kg8 44.Qb5 Qb2 45.Qe8= Kg7 46.Qe7 Kh8 47.Qf8 Kh7 48.Qe7 Qg7 49.Qa3 Qb7 50.Qb4 Kg7 51.Kf1 Kf7 52.Qf4 Kg7 53.Qe5 Kf7 54.Qf4 Kg7 55.Qe5 Kh7 56.Ke2 Qa6 57.Kd2 Qa4 58.Ke2 Qc2 59.Ke1 Qc5 60.Qc5+/– bc5 61.Kd2 g5 62.Kd3 Kg6 63.g4 Kf6= 64.Ke4 c4?? 65.Kd4+– c3 66.Kc3 Ke5 67.Kd3 Kf4 68.Ke2 Ke4 69.f3 Kf4 70.Kf2 Ke5 71.Ke3 Ke6? 72.f4 gf4 73.Kf4 Kf6 74.h4 Kg6 75.Ke5 Kg7 76.h5 Kf7 77.Kf5 Kg7 78.Ke6 Kg8 79.Kf6 Kh7 80.Kf7 Kh8 81.Kg6 Kg8 82.Kh6 Kh8 83.Kg6+– Kg8 84.h6 Kh8 85.g5+– Kg8 86.h7 Kh8 87.Kf7 Kh7 88.g6 (88...Kh8 89.g7 Kh7 90.g8Q Kh6 91.Qg6) 1–0. Zbynek,J – Muller,J, Plzen, 2000.

9.d4 cd4

10.Qd4 0–0 A) 11.Qf4 Bd6 (11...Nbd7 12.Nbd2 Rc8 13.Rac1 Qc7 14.Qh4 Nc5 15.Rfd1 Rfd8 16.Be5 Qd7 17.Bd4 Nd5; 11...Nh5 12.Qg4 Nf6 13.Qg3 Nbd7 14.Nbd2 Qb8 15.Qh3 Rc8 16.Rfc1 h6 17.Be2 Rd8) 12.Bf6 Qf6 13.Qf6 gf6 14.Rd1 Bc5 15.Nbd2 Nd7 16.Bd3 f5 17.Rac1 Rad8; B) 11.Rd1 Qd4 (11...Nbd7 12.Nc3 Qc7 13.Ne2 Bf3 14.gf3 Rad8 15.Rac1 Ne5 16.Qe5 Rd1 17.Rd1 Qc4) 12.Nd4 Rc8 13.Bb3 Rc7 14.Ba3 Ba3 15.Na3 Nbd7 16.Rac1 Nc5 17.Nc4 Rac8; C) 11.Qc3 Nbd7 (11...Qc7 12.Nbd2 Nbd7 13.Rac1 Rfd8 14.Rfd1 Rac8 15.h3 h6 16.Nb3 Bd6 17.Bd3 Qb8; 11...h6 12.Nbd2 a5 13.Rac1 Nbd7 14.Rfd1 Rc8 15.Qd3 Nc5 16.Qc2 Bd6 17.Be5 Nd5; 11...Bf3 12.gf3 Nbd7 13.Rd1 Rc8 14.Nd2 Bd6 15.Rac1 Be5 16.Qa3 Bb2 17.Qb2 Qe7; 11...Bd6 12.Nbd2 Nbd7 13.Rac1 Rc8 14.e4 e5 15.Qc2 Qe7 16.Qa4 Nc5 17.Qa3 Nce4; 11...g6 12.Nbd2 Nbd7 13.Rac1 Qc7 14.Qd4 Nc5 15.Qe5 Rac8 16.Rfd1 Rfd8 17.Bd4 Qe5) 12.Nbd2 Rc8 13.Rfd1 Bd6 14.Rac1 Qe7 15.Qc2 Rfd8 16.h3 Nc5 17.Be5 Nd5; D) 11.Nbd2 Qd4 (11...Nbd7 12.Rfd1 Nc5 13.Qh4 Nd5 14.Qg4 Bf6 15.Ne5 Qc7 16.Qg3 h5 17.h4 Qe7; 11...a6 12.Rfc1 Qd4 13.Nd4 Nbd7 14.ba6 Ba6 15.Nc6 Bc5 16.Rc2 Bc4 17.Nc4 Rac8; 11...a5 12.Rac1 Nbd7 13.Rfd1 Rc8 14.Qh4 h6 15.Qh3 Bb4 16.a3 Be7 17.Nd4 Nc5; 11...Bb4 12.Rfd1 Qd4 13.Nd4 Rc8 14.Rac1 Nbd7 15.N2f3 Be7 16.h4 g6 17.Be2 Rc1; 11...Qd6 12.Qd6 Bd6 13.Be2 Nbd7 14.Rfd1 Rac8 15.Nc4 Bb4 16.Rab1 Nd5 17.Rbc1 Rfd8) 12.Nd4 Rc8 13.Rac1 Nbd7 14.Rfd1 Nc5 15.N2f3 Na4 16.Ba1 Rc5 17.Nb3 Rcc8.

10.Qd4 Qd4 A) 11.Nd4 Nbd7 (11...0–0 12.Rd1 Rc8 13.Bb3 Rc7 14.Ba3 Ba3 15.Na3 Nbd7 16.Rac1 Nc5 17.Nc4 Rac8; 11...a5 12.Nd2 Nbd7 13.Rac1 Rc8 14.Be2 0–0 15.Nc6 Bc5 16.Rc5 Nc5 17.Ne7 Kh8 18.Nc8) 12.Nd2 Rc8 13.Rac1 0–0 14.Rfd1 Rfd8 15.N2f3 h6 16.Be2 Bc5 17.Nd2 Ne4; B) 11.Bd4 0–0 (11...Nbd7 12.Rd1 0–0 13.Nbd2 Rac8 14.Rac1 Rfd8 15.Be2 Bd5 16.Bc4 Ba3 17.Rc2 Rc7) 12.Nbd2 Nbd7 13.Rac1 Rac8 14.Rfd1 Rfd8 15.Be2 Bd5 16.Nc4 Ne4 17.Nfd2 Ndf6.

10.Qd4 Nbd7 A) 11.Nc3 0–0 (11...Qc7 12.Rac1 Rd8 13.Ne2 0–0 14.Qh4 Bf3 15.gf3 Nc5 16.Nd4 Nd5 17.Qg3 Bf6; 11...Nc5 12.Rad1 Qd4 13.Rd4 Rd8 14.Rfd1 0–0 15.Ne5 Rd4 16.ed4 Nce4 17.Nc6 Bc6; 11...Bf3 12.gf3 Qc7 13.Ne4 Rd8 14.Rac1 Nc5 15.Qc3 Qb7 16.Nc5 Qf3 17.Nd3 Qg4) 12.Rac1 Nc5 13.Rfd1 Qd4 14.Rd4 Rfd8 15.Ne5 Rac8 16.Rd8 Bd8 17.Rd1 Be7; B) 11.Rd1 0–0 (11...Nc5 12.Ne5 Qd4 13.Rd4 Na4 14.Ba3 Rd8 15.Rd8 Bd8 16.Nc6 Bc7 17.Nd2 Kd7; 11...Bf3 12.gf3 Qc7 13.Nd2 Rd8 14.Nb3 0–0 15.Qf4 Qf4 16.ef4 Nh5 17.Nd4 Bf6) 12.Na3 Qc7 13.Be2 Rfd8 14.Nc4 Be4 15.Rac1 h6 16.h3 Nc5 17.Qe5 Rac8; C) 11.Na3 0–0 (11...Nc5 12.Qf4 Nd5 13.Qg3 Bf6 14.Ne5 0–0 15.Rfe1 Ne4 16.Qf3 Ndc3 17.Ng4 Qe7; 11...Bc5 12.Qh4 0–0 13.Rad1 Ne4 14.Qh3 Qe7 15.Nb1 Ndf6 16.Nc3 Rfd8 17.Ne4 Ne4; 11...Rc8 12.Rfd1 0–0 13.Rac1 Rc5 14.Be2 Qc7 15.Rc5 Nc5 16.Nc4 Rd8 17.Qe5 Rd1; 11...h6 12.Be2 Nc5 13.Rfd1 Qd4 14.Rd4 0–0 15.Ne5 Rac8 16.Rad1 Bd5 17.Bf3 Bf3; 11...Be4 12.Rfd1 0–0 13.Ng5 Bg6 14.Rac1 h6 15.Ne6 fe6 16.Be6 Rf7 17.Qc3 Bf8) 12.Rfd1 Qc7 13.Be2 Be4 14.Rac1 Nc5 15.Nc4 Rfd8 16.Qe5 Rac8 17.Qc7 Rd1; D) 11.Rc1 0–0 (11...Rc8 12.Nbd2 0–0 13.Nb3 Nc5 14.Ne5 Na4 15.Be2 Nb2 16.Rc8 Qc8 17.Qb2 Bd5; 11...Nc5 12.Nc3 Qc7 13.Rd1 Rd8 14.Qf4 Bd6 15.Qh4 0–0 16.Rac1 Be7 17.Nd4 Rd7; 11...Qb8 12.Nbd2 0–0 13.Rc2 Rd8 14.Rd1 Nc5 15.Qh4 Nd5 16.Qg4 Nf6 17.Qh4 Nd5; 11...Bf3 12.gf3 0–0 13.Nd2 Nc5 14.Nb3 Na4 15.Qd8 Rfd8 16.Bd4 Rac8 17.Bf1 Nd5; 11...Bc5 12.Qd3 0–0 13.Nbd2 Qe7 14.Qc2 Rfd8 15.h3 Bd6 16.e4 Bf4 17.g3 Bd2) 12.Nbd2 Rc8 13.Rc2 Nc5 14.Rac1 Qd4 15.Bd4 Rfd8 16.Ne5 Nfd7 17.Nef3 Ne4; E) 11.Nbd2 Nc5 (11...0–0 12.Rac1 Nc5 13.Nb3 a6 14.Nc5 Bc5 15.Qh4 ab5 16.Rfd1 Qe7 17.Bb5 Ra2; 11...Rc8 12.Rfd1 Nc5 13.Qd8 Rd8 14.Ne5 Rc8 15.Rac1 0–0 16.Nb3 Na4 17.Bd4 Ba3) 12.Nb3 Qd4 13.Bd4 Rc8 14.Rfd1 0–0 15.Rac1 Nce4 16.Nbd2 Ba3 17.Rc2 Ng4.

10.Bd4 0–0 A) 11.Nbd2 Nbd7 (11...a6 12.Rb1 ab5 13.Rb5 Nbd7 14.Qc2 Qc7 15.Rc1 Bc5 16.h3 Rfc8 17.Rb3 Ba3) 12.Qe2 Rc8 13.Rac1 Bd6 14.Bb3 Nc5 15.Rfd1 Nb3 16.ab3 Rc1 17.Rc1 Ne4; B) 11.Nc3 Nbd7 12.Ne2 Rc8 13.Rc1 Ng4 14.Ng3 e5 15.Bb2 e4 16.Nd4 Nge5 17.Be2 Rc1; C) 11.Qb3 Qc7 (11...Nbd7 12.Nbd2 Rc8 13.Rac1 Nc5 14.Qc2 Qc7 15.Ne5 Bd6 16.Qb2 Rfd8 17.Rfd1 Qe7; 11...Bf3 12.gf3 Nbd7 13.Rd1 Qc7 14.Nd2 Nc5 15.Qb2 Rfd8 16.Rac1 Rac8 17.f4 Qb7; 11...h6 12.Nbd2 Nbd7 13.Rfd1 Nc5 14.Qb2 Rc8 15.Rac1 Bd6 16.Be5 Be5 17.Ne5 Nfd7) 12.Be5 Qc5 13.Nbd2 Nbd7 14.Bd4 Qh5 15.h3 Rfd8 16.Rac1 Nc5 17.Qb2 Rac8; D) 11.Qc2 Bd6 (11...Nbd7 12.Nbd2 Rc8 13.Rfd1 h6 14.h3 Qc7 15.Rac1 Ba3 16.Bb2 Bd6 17.Qb1 Nc5; 11...h6 12.Nbd2 Nbd7 13.h3 Rc8 14.Rac1 Ba3 15.Rb1 Qe7 16.Rfd1 e5 17.Ba1 Rfd8; 11...Be4 12.Qe2 Nbd7 13.Nbd2 Bg6 14.Rfd1 Rc8 15.g3 Qc7 16.Bb2 Rfd8 17.Rac1 Qb7; 11...Bf3 12.gf3 Nbd7 13.Nd2 Rc8 14.Rac1 Ba3 15.Rcd1 Qc7 16.f4 e5 17.Qd3 Bd6; 11...g6 12.Rd1 Nbd7 13.Nbd2 Rc8 14.Qb2 Bf3 15.gf3 Bc5 16.Bc3 Qe7 17.f4 Rfd8) 12.Nbd2 Nbd7 13.Rac1 Rc8 14.Rfd1 Ba3 15.Bb2 Bf3 16.gf3 Bb2 17.Qb2 Qe7; E) 11.Qe2 Nbd7 (11...Bd6 12.Nbd2 Nbd7 13.Bb3 Qc7 14.Rfc1 Bc5 15.Rc2 a6 16.ba6 Ba6 17.Bc4 Bb7; 11...Qc7 12.Nbd2 Nbd7 13.Rac1 Rac8 14.h3 Rfd8 15.Rfd1 h6 16.e4 Ba3 17.Rc2 Nc5; 11...g6 12.Nc3 Nbd7 13.Rfd1 Qc7 14.Rac1 Ng4 15.e4 Rac8 16.Bd3 Bb4 17.Rc2 Qf4) 12.Nbd2 Bd6 13.Rac1 Rc8 14.Bb3 Nc5 15.Nc4 Ng4 16.g3 Nb3 17.ab3 Bb4.

10.Bd4 a5 A) 11.ba6 Ba6 12.Nbd2 b5 13.Bd3 Nc6 14.Ne4 Nd4 15.Nd4 0–0 16.Qf3 Qd7 17.Rfc1 Rfc8; B) 11.Nc3 Nbd7 (11...0–0 12.Qe2 Nbd7 13.Rfd1 Rc8 14.Rac1 Bd6 15.e4 Qc7 16.Bd3 h6 17.Rc2 Qb8) 12.Rc1 0–0 13.Na4 Bd6 14.Qe2 Rc8 15.Rfd1 Qc7 16.g3 Ba3 17.Rc3 Bb4; C) 11.Nbd2 Nbd7 (11...0–0 12.Ne5 Bd6 13.f4 Nbd7 14.Ndf3 Rc8 15.Rc1 Ba3 16.Rc2 Be4 17.Bd3 Bc5) 12.Qe2 0–0 13.Rac1 Rc8 14.Rfd1 Bd6 15.Bb3 Rc1 16.Rc1 e5 17.Bc3 e4; D) 11.Qe2 Nbd7 (11...0–0 12.Nc3 Nbd7 13.Rfd1 Bd6 14.Na4 Rc8 15.Rac1 Qc7 16.g3 Ba3 17.Rc3 Bb4; 11...Bd6 12.Nbd2 Nbd7 13.Bd3 Nc5 14.Nc4 Nd3 15.Qd3 Bf3 16.gf3 Bc5 17.Rfd1 Rc8) 12.Nbd2 0–0 13.Rac1 Rc8 14.h3 Bd6 15.Bb3 Nc5 16.Nc4 Nfe4 17.Bc2 Bd5; E) 11.Ne5 Nbd7 (11...0–0 12.Nd2 Bd6 13.f4 Nbd7 14.Nc6 Qc7 15.Rc1 Bc5 16.Be2 Bc6 17.bc6 Qc6) 12.Nc6 Qc7 13.Qe2 Bc5 14.Nd2 0–0 15.Nb3 Bc6 16.bc6 Qc6 17.Rac1 a4.

10.Bd4 h6 A) 11.Qe2 Nbd7 (11...0–0 12.Nc3 Nbd7 13.Rfd1 Bd6 14.e4 Qc7 15.Rac1 Rac8 16.Bb3 Qb8 17.h3 Rfd8) 12.Nbd2 0–0 13.Rac1 Rc8 14.h3 Bb4 15.Rfd1 Qe7 16.Ne5 Ne5 17.Be5 Nd7; B) 11.Ne5 Qd6 (11...Qc7 12.Nd2 Nbd7 13.Nd7 Qd7 14.Nf3 0–0 15.Ne5 Qd6 16.Qe2 Rac8 17.Rfd1 Qa3; 11...Bd6 12.Be2 Qc7 13.f4 Nbd7 14.Nc4 Bc5 15.Nc3 0–0 16.Rc1 Rac8 17.Bd3 Rfd8; 11...Nbd7 12.Nc6 Qc7 13.Qe2 Bc6 14.bc6 Qc6 15.Bb5 Qc7 16.Nd2 0–0 17.Rac1 Nc5; 11...0–0 12.Bd3 Nbd7 13.Nc6 Bc6 14.bc6 Nc5 15.Bb5 a6 16.Be2 Rc8 17.Bf3 Nd5) 12.Nd2 Nbd7 13.Ndf3 0–0 14.Qe2 Rac8 15.Rfd1 Ne5 16.Ne5 Qa3 17.Bb2 Qb4; C) 11.Nc3 Nbd7 (11...0–0 12.Qe2 Nbd7 13.Rfd1 Bd6 14.e4 Qc7 15.Rac1 Rac8 16.Bd3 Ne5 17.Ne5 Be5) 12.Na4 Rc8 13.Rc1 0–0 14.Qb3 Ne4 15.Rfd1 Bd6 16.Qb2 Ndf6 17.Ne5 Qe7; D) 11.Bd3 Nbd7 (11...0–0 12.Nbd2 Nbd7 13.Rc1 Nc5 14.Bc4 Rc8 15.Ne5 Bd6 16.Qe2 Qe7 17.Rfd1 Rfd8) 12.Qe2 0–0 13.Nbd2 Nc5 14.Bc4 Bd6 15.Ne5 Rc8 16.Rfd1 Qe7 17.Rac1 Rfd8; E) 11.Nbd2 Nbd7 12.Qe2 Rc8 13.Rfd1 0–0 14.Rac1 Bd6 15.Bd3 Rc1 16.Rc1 e5 17.Nc4 ed4.

10.Nd4 0–0 A) 11.f4 Qc7 (11...Nbd7 12.Nc6 Qe8 13.Nc3 Rc8 14.Rc1 Bc6 15.bc6 Nc5 16.Nb5 Rc6 17.Na7 Rd6) 12.Nd2 Nbd7 13.Rc1 Nc5 14.N2f3 Bd6 15.Qe2 Rac8 16.Nb3 Rfd8 17.Ne5 Nfe4; B) 11.Na3 Nbd7 (11...Qe8 12.Bd3 Nbd7 13.Nc4 Nc5 14.Rc1 Rd8 15.Ne5 Bd6 16.f4 Nfe4 17.Nec6 Rd7; 11...Bc5 12.Be2 Qc7 13.Nc4 Nbd7 14.Rc1 Rfd8 15.Qb3 Bd5 16.Rfd1 h6 17.Qa4 Rac8; 11...Qd6 12.Bb3 Rd8 13.Nc4 Qc7 14.Rc1 Nbd7 15.f4 Nc5 16.Ne5 a6 17.Qe2 Bd6 ; 11...g6 12.f4 Nbd7 13.Nc6 Qe8 14.Nc2 Ne4 15.Rc1 Ndc5 16.N2d4 Bf6 17.Ne5 a6; 11...Qc7 12.Rc1 Bc5 13.Bd3 Nbd7 14.Nc4 Rfd8 15.Qe2 a6 16.f3 Nd5 17.f4 g6) 12.Nc6 Qe8 13.Nc2 a6 14.N2d4 ab5 15.Bb5 Bd6 16.Qc2 Nc5 17.Rfd1 Qd7; C) 11.Nd2 Nbd7 (11...Qd6 12.Be2 Nbd7 13.Nc4 Qc7 14.Rc1 Nc5 15.f3 Rfd8 16.Qc2 Nd5 17.Nb3 f6; 11...a6 12.a4 ab5 13.ab5 Qc7 14.Ra8 Ba8 15.Qc2 Bd5 16.Rc1 Nbd7 17.e4 Bc4; 11...Bd6 12.Be2 Nbd7 13.Nc4 Bc5 14.Rc1 Qc7 15.Bf3 Rfc8 16.Qd3 Bd4 17.ed4 Bf3; 11...Qc7 12.Rc1 Bc5 13.N2b3 Nbd7 14.f3 Rfd8 15.Qd2 Ne5 16.Be2 Rac8 17.Rfd1 Bd5) 12.Nc6 Qe8 13.Nf3 a6 14.Nfd4 ab5 15.Bb5 Bd6 16.Qc2 Nc5 17.Rfd1 Qd7.

10.Nd4 a6 +=.

10.Nd4 Qc7 A) 11.Bd3 Nbd7 (11...0–0 12.Nd2 Nbd7 13.Rc1 Nc5 14.f4 a6 15.N2f3 ab5 16.Nb5 Qc6 17.a3 Rad8; 11...a5 12.Nc3 Nbd7 13.Rc1 Nc5 14.f3 0–0 15.Na4 Bd6 16.f4 Rac8 17.Nb3 Nfe4; 11...h5 12.f4 Nbd7 13.Nd2 Nc5 14.Rc1 0–0 15.Nc4 Nd3 16.Qd3 Bc5 17.Nb3 Rfd8) 12.Nd2 0–0 13.Rc1 Nc5 14.N2b3 Rfd8 15.Qe2 Qd7 16.Bc4 Rac8 17.Rfd1 Bd6; B) 11.Qe2 Nbd7 (11...0–0 12.Rc1 Bc5 13.Nd2 Nbd7 14.N2b3 Rfd8 15.f3 Rac8 16.Nc5 bc5 17.Nb3 Ne5) 12.Nd2 0–0 13.Rac1 Nc5 14.f4 Rac8 15.f5 e5 16.Nc6 Bd6 17.Na7 Bg2; C) 11.Qc2 Ng4 12.g3 Nd7 13.Nd2 Nde5 14.Rac1 Rc8 15.Qb3 Qd6 16.Be2 Qb4 17.Rc8 Bc8; D) 11.Nd2 Nbd7+= 12.Rc1 Nc5 13.f4 0–0 14.Qe2 Rfd8 15.N2f3 Bd6 16.Ng5 Qe7 17.Nc6 Bc6.

10.Nd4 Nbd7 A) 11.Qe2 Qc7 (11...Rc8 12.Nd2 0–0 13.Rfd1 Nc5 14.N2b3 Qc7 15.Nc5 Bc5 16.Rac1 Rfd8 17.Bd3 Qe7; 11...0–0 12.Nc6 Qe8 13.Nc3 Nc5 14.Ne7 Qe7 15.Rfd1 Rfd8 16.Rac1 Rac8 17.Rd8 Rd8) 12.f4 0–0 13.Nd2 Rac8 14.Rac1 Nc5 15.f5 e5 16.Nc6 Bd6 17.Rfd1 Bc6; B) 11.f4 0–0 (11...Rc8 12.Be6 0–0 13.Bh3 Bb4 14.Nd2 Nd5 15.Qe2 Nc3 16.Bc3 Rc3 17.Rac1 Qc7; 11...Qc7 12.Nd2 0–0 13.Rc1 Nc5 14.N2f3 Bd6 15.Qe2 Rac8 16.Nb3 Rfd8 17.Ne5 Nfe4; 11...Nc5 12.Nc3 Qc7 13.Nc6 0–0 14.Ne7 Qe7 15.Qe2 Rad8 16.Rfd1 h6 17.Rac1 Rd1) 12.Nc6 Qe8 13.Nc3 Rc8 14.Rc1 Bc6 15.bc6 Rc6 16.Nb5 Qb8 17.Nd4 Rc5; C) 11.Nc3 Qc7 (11...0–0 12.Nc6 Bc6 13.bc6 Rc8 14.Qe2 Rc6 15.Rfd1 Qc8 16.Ba6 Qb8 17.Bb5 Rd6; 11...Ne5 12.Be2 Rc8 13.Qa4 0–0 14.Rac1 Ned7 15.Nb3 Nc5 16.Nc5 Bc5 17.Rfd1 Qe7; 11...Qc8 12.Qe2 0–0 13.Rac1 Nc5 14.f4 Rd8 15.Bb3 Nb3 16.ab3 Qd7 17.Rfd1 Qe8; 11...h5 12.f4 Qc7 13.Be2 h4 14.Bf3 h3 15.Rf2 Bc5 16.Rc1 Rd8 17.Qe2 hg2) 12.Bd3 0–0 13.Rc1 Nc5 14.Na4 Rfd8 15.Ba3 Rac8 16.Re1 Qe5 17.Bc4 Nfe4; D) 11.Be2 Qc7 (11...Rc8 12.Nd2 0–0 13.Nc4 Qc7 14.f3 Nc5 15.Qc2 Nd5 16.Rac1 Rfd8 17.Rfd1 Nb4; 11...0–0 12.Nc6 Qe8 13.Nc3 Nc5 14.Bf3 Rc8 15.Rc1 Bc6 16.Bc6 Rc6 17.bc6 Qc6) 12.Nd2 0–0 13.Rc1 Nc5 14.f4 Rfd8 15.Bf3 a6 16.Nc6 Bc6 17.Bc6 Rac8; E) 11.Nd2 Qc7 12.Rc1 Nc5 13.N2b3 0–0 14.Qe2 Rfd8 15.Rfd1 Rac8 16.Bd3 Bd6 17.Nc5 Bh2.

10.Bd4 Nbd7

11.Qc2 Rc8 (11...0–0 12.Nbd2 Rc8 13.Rfd1 Bd5 14.Qb3 Nc5 15.Qb2 Bd6 16.Rac1 Na4 17.Qb1 Qe7; 11...Be4 12.Qe2 0–0 13.Nbd2 Bg6 14.Rfd1 Rc8 15.h3 h6 16.Bb3 Qc7 17.Nc4 Ne4; 11...Bd6 12.Nbd2 Rc8 13.Rac1 0–0 14.Rfd1 Ba3 15.Rb1 Qc7 16.Qa4 Bd6 17.Rbc1 Nc5; 11...g6 12.Nbd2 0–0 13.h3 Rc8 14.Rac1 Ba3 15.Rcd1 Qc7 16.Qc3 Bf3 17.gf3 Be7; 11...h6 12.Rd1 Rc8 13.Nbd2 0–0 14.h3 Qc7 15.Rac1 Ba3 16.Bb2 Bd6 17.Qb1 Nc5) 12.Nbd2 0–0 13.Rac1 Ba3 14.Bb2 Qe7 15.Rfd1 Rfd8 16.h3 Bb2 17.Qb2 h6.

11.Nbd2 0–0 (11...Rc8 12.Rc1 0–0 13.Qe2 Bd6 14.Bb3 Nc5 15.Nc4 Ng4 16.g3 Nb3 17.ab3 Bb4; 11...h6 12.Qe2 Rc8 13.Rac1 0–0 14.Rfd1 Bd6 15.Bb3 Rc1 16.Rc1 Qe7 17.Nc4 Rc8; 11...g6 12.Qe2 0–0 13.Rac1 Rc8 14.Rfd1 Ba3 15.Rc2 Qe7 16.e4 Bc5 17.e5 Bd4; 11...Bc5 12.Rc1 0–0 13.h3 Bd4 14.Nd4 Rc8 15.Qe2 Nc5 16.Rfd1 Qe7 17.N2f3 Qc7) 12.Qb3 (12.Qc2 Rc8= 13.Rfd1 Bd5 14.Qb3 Nc5 15.Qb2 Qd6 16.Rac1 Na4 17.Qc2 Nc5) 12...Nc5= (12...Rc8 13.Rac1 Nc5 14.Qc2 Qc7 15.Ne5 Rfd8 16.f4 Ncd7 17.Qb3 Nc5) 13.Qb2 (13.Qc2 Rc8= 14.Rfd1 Qc7 15.Rac1 Rfd8 16.Qb2 Na4 17.Qb1 Nc5) 13...Bd5 (13...Bd6 14.Rfd1= (14.Rac1 Rc8 15.Rfd1 Qe7 16.Be2 Na4 17.Qa1 Rc1) 14...Rc8 15.Rac1 Qe7 16.Be2 Na4 17.Qa1 Rc1; 13...Rc8 14.Rac1 Bd6 15.Be2 Qe7 16.Ne5 Be5 17.Be5 Rfd8) 14.Rfd1+= (14.Rac1 h6 15.Ne5 Rc8 16.Bd5 Qd5 17.Ndc4 Nfe4) 14...Ne8 (14...Rc8 15.Rac1+= (15.Ne5 h6 16.Rac1 Bd6 17.Bd5 Be5) 15...Bd6 16.Ne5 Qe7 17.Bd5 ed5) 15.Bd5 (15.Ne5 Nf6+/– 16.Bd5 ed5 17.Nc6 Qc7) 15...Qd5 (15...ed5 16.Ne5+/– Nf6 17.Nc6 Qc7) 16.Nb3 (better is 16.Bc5 Qc5 (16...bc5 17.Ne5 Nd6) 17.Rac1+/– Qa3; 16.Ne5 Nd6 17.Rac1 Rfc8) 16...Ne4? (16...Nb3 17.Bg7 Qb5+/–) 17.Qe2?? (better is 17.Bg7 Qb5 18.Bf8 Bf8 19.Nfd4+–) 17...Qh5= 18.Qc4 (better is 18.Qd3 N8d6 19.Be5+=) 18...Nc5?? (better is 18...N8d6 19.Qc7 Bd8–/+) 19.Bc5+/– bc5 (19...Rc8 20.Nfd4 Bc5 21.Nc6+–) 20.Rd7 Bd6? 21.Rd1 Bc7 22.Qc5 Qc5 23.Nc5 Bb6 24.Nb3 Nf6+/– 25.Rb7 Nd5 26.a4 Nc3 27.Ra1 Bd8 28.Nfd4 Bf6+/– 29.Kf1 a6? 30.b6+– Rfb8 31.Rb8 Rb8 32.a5 g6 33.Nc6 Re8 34.b7 1–0. De Kruif,K (2050) – Goris Schouwstra,A (1915), 31st Guernsey Open, Cobo Bay GCI, 2005.

11.Qe2 0–0 (11...Rc8 12.Nbd2 0–0 13.Rfd1 Bd6 14.Bb3 e5 15.Bb2 e4 16.Nd4 Qc7 17.Nf5 Bh2; 11...Bd6 12.Nbd2 0–0 13.Bb3 Qc7 14.Rac1 Nc5 15.Bf6 gf6 16.g3 Qd7 17.Rfd1 Rad8; 11...g6 12.Nbd2 0–0 13.Rac1 Rc8 14.Rfd1 Ba3 15.Rc2 Qe7 16.Ng5 h6 17.Ngf3 Rfd8) 12.Nbd2 Rc8 13.Rfc1 Bb4 14.Bb3 Qe7 15.Nc4 Ne4 16.Qb2 f6 17.h4 Rfd8.

11.g3 0–0 (11...Rc8 12.Nbd2 Bf3 13.Qf3 Bb4 14.Rfd1 Bd2 15.Rd2 Rc4 16.Bf6 Qf6 17.Qa8 Qd8; 11...h6 12.Nbd2 Rc8 13.Rc1 0–0 14.Qe2 Bb4 15.Rfd1 Qe7 16.Bb3 Nc5 17.Ne5 Rfd8; 11...Bd6 12.Nbd2 0–0 13.Be2 Nc5 14.Nc4 Nfe4 15.Rc1 Rc8 16.Nd6 Qd6 17.Bc5 Qd1; 11...Nc5 12.Nc3 0–0 13.Rc1 Rc8 14.Qe2 Qc7 15.Rfd1 Rfd8 16.Rc2 h6 17.Ne5 Bd6; 11...g6 12.Nbd2 0–0 13.Qe2 Rc8 14.Rac1 Bd6 15.Bb3 Nc5 16.Nc4 Nfe4 17.Rfd1 Nb3) 12.Nbd2 Rc8 13.Rc1 Ba3 14.Rc2 Qe7 15.Qe2 e5 16.Ba1 Bd6 17.Rd1 Nc5.

11.h3 0–0 (11...Rc8 12.Nbd2 Bf3 13.gf3 Bc5 14.Bc3 Nd5 15.Bd5 ed5 16.Qa4 Be3 17.Bg7 Rg8; 11...Bc5 12.Nbd2 0–0 13.Rc1 Bd4 14.Nd4 Rc8 15.N2f3 Qe7 16.Bd3 Rc1 17.Qc1 Rc8; 11...h6 12.Nbd2 0–0 13.Rc1 Rc8 14.Qa4 Nc5 15.Qc2 Qc7 16.Rfd1 Bd6 17.Be2 e5; 11...Bd6 12.Nbd2 0–0 13.Be2 Qe7 14.Nc4 Ne4 15.Rc1 Bc5 16.Bd3 Rac8 17.Qc2 f5; 11...g6 12.Nbd2 0–0 13.Qe2 Rc8 14.Rfd1 Bc5 15.Rac1 Qe7 16.Bb2 Rfd8 17.Bb3 Bb4) 12.Nbd2 Rc8 13.Rc1 Ba3 14.Rc2 Qe7 15.Qe2 Rfd8 16.Rd1 e5 17.Ba1 h6.

6.Bc4 Bd6

7.d4 cd4 8.Bd4 e5 =.

7.Ne2 Nbd7 8.Nbc3 Ne5 9.Qa4 b6 (9...Nfd7!? 10.Ne4 Nb6 (10...Nc4?! 11.Qc4 Be5 12.Bc3=) 11.Nd6 Qd6 12.Be5 Qe5–+ (12...Na4?? 13.Bd6 Kd7 14.Bf4+–)) 10.f4 Nc4 11.Qc4 Bb7 12.0–0 g6 (12...0–0 13.e4=+) 13.e4= Be7 14.f5 (14.Rad1!?=) 14...gf5=+ 15.ef5 Rg8 16.g3 (16.Ng3 Qd2 17.Rf2 Qd4–/+) 16...Qd2 17.Bc1 Qd6 18.Bf4 e5 19.Rad1 Qc7 20.Bc1? (20.Be3 a6–/+) 20...a6 21.a4? h5 22.Rd3? Rg4 23.Qa2 ab5 24.Nb5 Qc6 25.Nec3 c4 26.Rdf3 Qc8 27.Ba3 Bf3 28.Be7 Ke7 29.Rf3 h4 30.Qe2 Qc5 31.Kf1 hg3 32.Rg3 Rg3 33.hg3 Rh8 34.Kg2 Qc6 35.Qf3 Rh2! (36.Kh2 Qf3–+) 0–1. Dumontelle,Joe – Wright,K, March, 1979.

7.Ne2 Nbd7 8.Nbc3 Ne5 9.d3 Nc4 10.dc4 0–0 =+.

7.f4 0–0 8.Nf3 =+.

7.f4 Nbd7 8.Nf3= Nb6 9.d3 =+.

7.f4 Nbd7 8.Nf3= Qc7 9.Nc3 0–0 10.0–0 e5 11.g3 (11.Ne5 Ne5 12.fe5 Be5=+) 11...ef4 (11...e4 12.Ng5 Nb6 13.Be2=+) 12.gf4= Nb6 13.Be2 Bh3 14.Re1 Rad8 15.Ng5 Bf5 16.Bf1 h6 17.Nh3 (17.Bh3 Bh3 18.Nh3 Nc4–/+) 17...Bg4 18.Qc2 Qd7 (18...c4 19.Bg2–/+) 19.Nf2=+ Rfe8 20.a4 Bf8 (20...Bf3 21.a5 Nbd5 22.Nd5 Nd5 23.Bc4=+) 21.d3 Nbd5 22.Nd5 Nd5 23.Qd2 Nb4 24.Bc3 Be6 25.Bb4 (25.Rad1 Nd5=+) 25...cb4–/+ 26.Rec1 f5 27.d4 Qf7 28.Nd3 Qg6 29.Bg2 (29.Qg2 Kh7=+) 29...Bd6 (29...Bd5 30.Ne5 Qg2 31.Qg2 Bg2 32.Kg2=) 30.Kh1 Qh5 (30...b3 31.Qa5=) 31.Bb7 g5 (31...Rb8 32.Bc6 b3 33.Be8 Bd5 34.Kg1 Qg4 35.Kf1 Re8 36.Qf2+/–) 32.Qg2 Kh8 33.Ne5 Rg8 34.Bf3 g4 35.Bc6 Be5 36.fe5+/– b3 37.Rab1 g3+= 38.Bf3 Qh4 39.Rb2 f4 40.Qg1?? Bh3?? 41.Bg2?? fe3 42.Qe3= Bf5 43.h3 Bh3 44.Bh3 Qh3 45.Kg1 Rdf8 46.Rg2 Rf5 47.Rc6= Rh5 48.Kf1 Rf8 49.Rf6=+ Rf5 50.Ke1?? R5f6 51.ef6 b2 52.Rb2 Rf6?? 53.Re2 Qf1 54.Kd2 Qf4 55.Rg2 ½–½. Sundin,Thommy – Johansson,Sune, Hudiksvall, 1989.

6.Bc4 Nbd7

7.a4 b6 8.Nf3 Bd6 9.Qb3 (9.0–0 Bb7=) 9...Bb7 10.d3 Bf3 11.gf3 Be5 (11...Ne5 12.Nd2=) 12.Nc3 0–0 13.0–0–0 (13.a5 ba5 14.f4 Bc7=) 13...a6 14.f4 Bc3 15.Qc3 ab5 16.ab5 (16.Bb5 Ne8=) 16...Nh5 (16...Ra7 17.Rhg1+=) 17.Rhg1= Qf6 (17...Nhf6 18.d4 cd4 19.Rd4+=) 18.Qb3 (better is 18.Rg5!? Qc3 19.Bc3+/–) 18...Qe7 (18...Qh6 19.Kd2=) 19.Rg5 (19.Kd2 Qh4 20.Rg2 Ndf6=) 19...f6?? (better is 19...Ndf6=) 20.Rh5 1–0. Ferreiro,Ji – De Andres,F, San Sebastian, 1996.

7.a4 Bd6 8.Nf3 =.

7.Nf3 Be7 =.

6.Bc4 Be7

7.Nf3 0–0 8.0–0 b6 9.d4 Bb7 (9...a6 10.dc5 Bc5 11.Qe2=) 10.Nc3 a6 11.a4 (11.Qe2 ab5 12.Nb5 Nbd7=) 11...ab5 12.Nb5 Ba6 (12...Bd5 13.Bd5 ed5 14.dc5 bc5 15.Qc2=) 13.dc5 Bc5 14.Qc2 Bb7 (14...Qe7 15.Rfd1 Rc8 16.Ng5+=) 15.Rfd1 (15.Ng5 g6+/–) 15...Qe7+= 16.Ne5 (16.Ng5 e5+=) 16...Nc6 (16...Rc8 17.Rac1=) 17.Rd2 (17.Nd3 Nb4 18.Nb4 Bb4+=) 17...Ne5 (17...Rfc8 18.Nc6 Bc6 19.Rdd1=) 18.Be5 Ng4 19.Qc3?? (better is 19.Bg3=) 19...f6 (better is 19...Bb4 20.Bd6 Bc3 21.Be7 Bd2 22.Bf8 Kf8–+) 20.Bg3 Bb4= 21.Bd6 Bc3 22.Be7 Ba1 23.Bf8?? Kf8–+ 24.Be6 Ne5 25.Nc7 Ra4 26.Rd8? Ke7 27.Re8 Kd6 28.Nb5 Kc5 29.Nc7 Bc6 30.Re7 Ng6 31.Rg7 Be5 32.Rh7 Ra1 0–1. gtate (1690) – rsilva (1725), net–chess.com, 2002.

7.Nf3 Nbd7 8.0–0 0–0 9.d3 (9.Qc2 Bd6=) 9...Nb6 10.Nbd2 Ne8 (10...Nc4 11.Nc4 Nd5 12.e4=) 11.Qc2 Bf6 (11...Nd6 12.Rfd1+=) 12.d4 (12.Bf6 Nf6 13.Rfd1 Bd7+=) 12...cd4 13.Nd4 Nd6 (13...e5 14.N4f3 Nc4 15.Nc4=) 14.Bd3 g6 (14...h6 15.Rfd1+=) 15.Rfd1 (15.N4f3 Bd7 16.Bf6 Qf6+/–) 15...Bd7 (15...e5 16.N4f3 Bg4 17.Be5 (< 17.Ne5 Bd1 18.Rd1 Rc8=) 17...Be5 18.Ne5=) 16.Ne4+/– Rc8 (16...Be7!?+/–) 17.Nf6+– (17.Nd6 Rc2 18.Bc2 Qe7=+) 17...Qf6 18.Nc6! e5 (18...bc6 19.Bf6) 19.Be5 Qe6 20.Qb3 Ndc4 (20...bc6 21.Qe6 Be6 22.Bd6+/–) 21.Bc4 Nc4 22.Qc4 bc6 23.Qd4 cb5 24.Bh8 f6 25.Qd7 Qd7 26.Rd7 Rf7 27.Rf7 Kf7 28.Rd1 Rh8 29.Rd7 Ke6 30.Ra7 Rc8 31.Kf1 h6 32.Ke1 Rc2 33.Rb7 Ra2 34.Rb5 g5 35.h4 g4 36.g3 Kf7 37.Rd5 Rb2 38.Rd2 Rb5 39.Ke2 h5 40.f3 gf3 41.Kf3 Rf5 42.Kg2 Ra5 43.Rd4 1–0. Diener,Rudolf – Hanisch, corr, DDR (year?).

5.c4 d4

6.Qb3 e5+= 7.ed4 (7.Ne2 Bd6+=) 7...ed4 (7...cd4 8.Nf3 Nbd7 9.Qc2–/+) 8.Bd3 (8.Nf3 Bd6 9.Be2 0–0–/+) 8...Bd6+= 9.Ne2 (9.Nf3 Qe7 10.Kf1 0–0–/+) 9...Qc7 (better is 9...0–0–/+) 10.g3? (better is 10.Na3!?–/+) 10...Bh3–+ 11.Na3 0–0 12.0–0–0 (12.b6 ab6 13.Nb5 Qd7–+) 12...Ng4 13.Bf5 Nf2 14.Bh3 (14.Rdf1 Bf5 15.Rf2 Bg4–+) 14...Nh3 15.Qf3 Ng5 16.Qf5 Ne6 17.d3 (17.Nf4 Nf4 18.gf4 Nd7–+) 17...Nd7 18.Rhf1 (18.h4 g6 19.Qf2 h5–+) 18...Rae8 19.Nc2 (19.Kb1 Ne5–+) 19...g6 (19...a6 20.Na3–+) 20.Qf2 (20.Qf3 a6–+) 20...f5 (20...a6 21.Kb1–+) 21.Nf4 (21.Kb1 a6–+) 21...Nf4 22.gf4 Nf6 23.Rde1 (23.Kb1 a6–+) 23...Nh5 24.Re8 (24.Kb1 Nf4 25.Qf3 Nh5–+) 24...Re8 25.Kb1 Nf4 26.Re1 (26.Qf3 a6 27.a4 ab5 28.ab5 Ra8–+) 26...Re1 (better is 26...Re7 27.Qf3 Re1 28.Ne1 Qe7–+) 27.Qe1 Qe7 28.Qf1 Qe2 29.Qh1 Ng2 30.Qg1 Be5 31.Bc1 f4 32.Ba3 b6 33.Qc1 Ne3 34.Ne3 de3 35.Qc2 Qc2 36.Kc2 f3 37.Bc1 f2 38.Bb2 Bb2 39.Kb2 f1Q 40.Kc3 e2 41.Kb3 Qb1 (41...Qb1 42.Kc3 e1Q#) 0–1. Melzig,Ernst – Mueller,R (1675), Bayern–ch Seniors, 2000.

6.Qe2 Be7 (6...de3 7.de3 Be7 (7...Bd6 8.e4 e5 9.Nc3 0–0 10.Rd1 Qc7 11.Nf3; 7...a6 8.Nc3 ab5 9.cb5 Qa5 10.Qc2 b6 11.Nf3) 8.Nf3= (8.Nc3 a6 9.Rd1 Qa5 10.e4 ab5 11.cb5; 8.Qc2 Nbd7 9.Bd3 a6 10.Nf3 ab5 11.cb5) 8...Nbd7 9.Nc3 a6 10.Qc2 Qa5 11.Rd1) 7.ed4+= cd4 (7...a6 8.Nf3 (8.Qe3 cd4 9.Bd4 ab5 10.cb5 Nbd7 11.Nf3; 8.dc5 Bc5 9.Nf3 ab5 10.cb5 0–0 11.Nc3) 8...ab5 9.dc5 bc4 10.Qc4 0–0 11.Nc3) 8.Nf3 d3 (8...Bc5 9.Qd3= Nbd7 10.Bd4 Bd4 11.Qd4) 9.Qe3 (9.Qd3 Nbd7 10.Be2 0–0 11.0–0) 9...0–0 (9...a6 10.Nc3 ab5 11.Nb5) 10.Bd3 Nbd7 (10...a6 11.0–0) 11.0–0 b6 12.Re1 Nc5 (12...Bc5 13.Qg5+/–) 13.Bc2 Bb7 14.d4 Ncd7 15.a4 Ng4 (15...Bb4 16.Nc3+/–) 16.Qf4 Ndf6 17.h3 Bd6 18.Ne5 Nh6 19.Nd2 Nh5 (19...a6 20.ba6 Ra6 21.Ba3+/–) 20.Qe3+– Nf5 (20...Nf6 21.a5! ba5 22.Nb3+–) 21.Bf5 ef5 22.Nd3 f4 (22...Re8 23.Qe8 Qe8 24.Re8 Re8 25.c5+–) 23.Qe2 Qg5 24.d5. michaelbuss (2600) – Caio Giulio Cesare (2230), ChessWorld.net, 2003.

6.Nf3 Qc7 7.ed4+= cd4 8.Bd4 Nbd7 9.Bb2 e5 10.Ne5 Ne5+= 11.Qe2 Bd6 12.f4+– Bg4 13.Qe3 0–0–0 14.fe5 Rde8 15.d4 Nd7 16.Qg3 f5 17.Qb3?? Ne5 18.de5?? Be5–+ (19.Kd2 Qd8 20.Bd3 Bb2–+) 0–1. Hunstock,Joachim – Rasmussen,Fritz, corr ICCF–Cup8/9 V102, 1990.

6.f4 b6?? 7.Qf3+– Na6 (7...Nd5 8.cd5 Bb7 9.ed4 Bd5 10.Qf2+–) 8.ba6 (better is 8.Qa8 Nb4 9.Na3+–) 8...Ba6 (8...Rb8 9.ed4 cd4 10.Qd3+–) 9.Qc6 (9.ed4 Qc8+–) 9...Nd7 10.ed4 Rb8 11.Qe4 Qh4 12.g3 Qd8 13.Bg2 Bc4 14.Nc3 Nf6 15.Qc6 Qd7 16.Nge2 Bd5 17.Nd5 ed5? 18.Qd7 Kd7 19.dc5 bc5 20.Bf6 (20.Bf6 gf6 21.Bd5+–) 1–0. De Visser,Arno – Duinmaijer, 1981.

6.f4 de3 7.de3 Qd1 8.Kd1 Be7+= 9.Bd3 a6 10.Nf3 ab5 11.cb5.

6.ed4 cd4

7.Be2 e5 =+.

7.Nf3 Bc5

8.Ba3 Ba3 9.Na3 0–0 =+.

8.d3 b6 9.Nbd2 Bb7 10.Nb3 Nbd7 11.Bd4 Bd4 12.Nbd4 Nc5 13.Nc6 Bc6 14.bc6 Qd6 15.d4 Nce4 16.d5 ed5 17.cd5 Nd5 18.Bd3 Nec3 19.Qd2 Qc6 20.0–0 0–0 21.Ng5 h6 22.Nf3 Rac8 23.Ne5 Qe6 24.Nf3 Rfe8 25.Bc2 Red8 26.Qd3 Nf4?? 27.Qh7+– Kf8 28.Bb3?? Qg6 29.Qg6 Ng6 30.Rfe1 Nd5 31.Re4 Nf6 32.Re3 Rd7 33.Rae1 Rcd8 34.Ne5 Ne5 35.Re5 Rd2 0–1. revbodio2 – Pulsar, Live Game Caissa's Web, 2004.

8.Bd3 0–0 9.Ba3 (9.0–0 Qd6=) 9...Qd6 (9...Ba3 10.Na3 e5 11.Ng5–/+ (11.Ne5? Qd6–+)) 10.Bc5 Qc5 11.0–0 Re8 12.Re1 e5 13.Qc2 Nbd7 (13...a6 14.ba6 Na6 15.Ng5=) 14.a4 (14.Ng5 Nf8=) 14...a6 15.Na3 a5 (15...ab5 16.Nb5 h6 17.Bf5=) 16.Ng5 h6 17.Ne4 (17.Bh7 Kf8 18.Ne4 Ne4 19.Be4 Nb6=) 17...Ne4 18.Be4 Nf6 19.d3 (19.Qd3!?=) 19...Ne4=+ 20.Re4 Bf5 21.Ree1 Bg6 (21...Rac8 22.Qd1=+) 22.Nb1 b6 23.Nd2= f5 24.f3 e4 25.Nb3 Qd6 26.c5 bc5 27.Qc5 Qc5= 28.Nc5 e3 29.Rad1 Bf7 30.Re2 (30.Rc1 Rac8=+). Krickemeyer,Horst – Riedl,Oskar (1635), 12sen.Woerishofen, 1996.

8.Be2 0–0 9.0–0? d3 –+.

8.Be2 0–0 9.0–0? Qd6?? 10.d3 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 b6 14.Nbd2 Bb7 15.Nb3 Nbd7 (15...Ng4 16.Nbd2=) 16.Nbd4 (16.Nfd4 Ra8+/–) 16...Ra8 17.Nb3 Bb4 18.Qc2 Rc8 19.Bd4 (19.Nfd2 e5+=) 19...Ng4 20.g3 e5 21.Be3 Ne3 22.fe3 Nc5 (22...Qh6 23.e4 Qe3 24.Kg2 Ra8+=) 23.Ng5 (better is 23.Nh4!?+=) 23...Nb3 24.Qb3 Bc5 (24...Qc5 A) 25.Nf7 Qe3 26.Rf2 Bc5 27.d4 Qd4 28.Nh6 gh6 29.Qf3 Bf3 30.Bf3 Qf2 31.Kh1 Qf3; B) 25.Rf7? Qe3 26.Kf1 Bc5–+ (26...Qg5?! 27.Rb7 Rf8 28.Kg2–/+); C) 25.d4 ed4 26.Rf7 Qg5 27.Rb7+=) 25.Rf7 (25.d4 ed4 26.Rf7 Qg6 27.Rb7 Qg5 28.ed4 Bd4 29.Kh1 Ra8+/–) 25...Be3= 26.Kf1 Rf8 (better is 26...Bg5 27.Rb7 Rf8 28.Kg2 Qf6+=) 27.Rf8?? (27.c5 Qd7 28.Rf8 Kf8+–) 27...Kf8 28.Nf3 Bf3 29.Bf3+/– Qc5 30.Qc2 Qd4 31.Kg2 g6 32.h4 Kg7 33.Be4 Kh6 34.Kf3 Kg7 35.Qe2 Bh6 36.Kg2 Qc5 37.Qg4 Qe7 38.h5 Qf7 39.hg6 hg6 40.Bd5 Qe7 41.d4 ed4 42.Qd4 Qf6 43.Qe4 Qb2 44.Kh3 Qf6 45.Qg4 Qd6 46.Qf3 Qd7 47.g4 Bg5 48.Qe4 Qd6 49.Kg2 Bh4 50.Qf3 Qc7 51.Qe3 Bf6? 52.Qe6?? Bh4 53.Qe3 Bf6 54.g5 Qe5 55.gf6 Qf6 56.Kg3 Qd6 57.Kf3 Qf6 58.Kg4 Qf5 59.Kg3 Qf6 60.c5 bc5 61.Qc5 Qe5 62.Kf3 Qf5 63.Ke3 Qe5 64.Kd3 Qf5 65.Kc4 Qf4 66.Kb3 Qg3 67.Qc3 Qc3 68.Kc3 Kf8 69.b6 Ke8 70.b7 (70...Kd8 71.b8Q Ke7 72.Qe5 Kd7 73.Qe6 Kc7 74.Qe7 Kc8 75.Bb7 Kb8 76.Ba6 g5 77.Qb7) 1–0. katchum (1800) – jjones (1800), net–chess.com, 2001.

8.Be2 0–0 9.d3 Qd6 =+.

8.Be2 d3 9.Bf1 Ne4 10.Qb3 Bf2 11.Kd1 –+.

8.d3 0–0

9.Nbd2 Re8 10.Be2 e5 11.0–0 Bf5 (11...a6 12.Nb3 (12.Ne4 Ne4 13.de4 Qf6 14.Bc1 Be6 15.Ng5 Bd7) 12...Nbd7 (12...Bf8 13.Nfd2 ab5 14.cb5 Nd5 15.Bf3 Bb4; 12...Bb4 13.a3 Bf8 14.ba6 Na6 15.Nfd2 Nc5) 13.ba6 (13.Nc5 Nc5 14.a4 Qc7 15.Ba3 b6) 13...ba6 14.Ne1+= Rb8 15.f4 Qe7; 11...Nbd7 12.Bc1 Qc7 (12...a6 13.ba6 Ra6 14.Ne4 Ne4 15.de4 Qc7; 12...Bb4 13.Rb1 Bc3 14.Qc2 Nc5 15.Ne4 Nfe4) 13.Nb3 Bb4 14.Rb1 Bc3 15.Bg5 a6) 12.Nb3= (12.Nh4 Be6 (12...Bd7 13.f4 e4 14.Nb3 b6 15.Bd4 Bd4) 13.Nb3 Nfd7 14.Nf3 Bb4 15.a3 Bd6) 12...Nbd7 (12...Bd6 13.Ne1= (13.c5 Bc7 14.Re1 Nd5 15.Rb1 Nd7) 13...a5 14.f4 ef4 15.Nd4 Qb6; 12...Bb4 13.Nh4 Bc8 14.f4 Qe7 15.Nf3 Ng4) 13.Nh4+= Be6 14.g3 (better is 14.f4!? Qc7 (14...Bb6 15.Kh1 ef4) 15.Rc1+= Nb6; 14.Nc5 Nc5 15.f4 e4) 14...Bh3 (14...Bb6 15.Bf3 e4) 15.Ng2 Qb6 (15...Bb4+=) 16.f3 e4 (better is 16...a6 17.a4 ab5 18.ab5 Ra1 19.Ba1 Ra8+=) 17.fe4+= Ne4 18.Bf3 (18.Bh5 Nef6 19.Bf7 Kf7 20.Qh5 Kg8 21.Qh3 a6+/–) 18...Ng5 (18...Nc3 19.Bc3 dc3 20.d4=) 19.Bg4 (19.Nc5 Nc5 20.Bd4 Qd6+/–) 19...Re7 (19...Ne5 20.Bh3 Nh3 21.Kh1=) 20.Bc1 (better is 20.Nc5 Nc5 21.Bd4=) 20...Ne5?? (better is 20...Bg4 21.Qg4 Ne6=) 21.Bg5+/– Bg4 22.Be7 Bd1 (22...Be7!? 23.Qe1 Bf6+/–) 23.Bc5+– Qh6 (23...Qh6 24.Rad1 Ng4+–). Dijkhuizen,A – Renden,B, Barneveld, 2000.

9.Nbd2 Re8 10.g3 e5–/+ 11.Bg2 a6 12.0–0 –/+.

9.Nbd2 Re8 10.g3 e5–/+ 11.Bg2 e4 12.de4=+ Ne4 13.0–0 Nd2 (better is 13...Nc3!? 14.Bc3 dc3=) 14.Qd2+/– d3 (14...a6 15.Bd4 Bd4 16.Nd4 ab5 17.cb5+/–) 15.Rfe1 Re1 (15...Be6 16.Ng5 a6 17.Bb7+–) 16.Re1 a5 (16...Nd7 17.Qd3 a6 18.Ne5+/–) 17.Rd1 (17.Ne5 Be6+–) 17...Qb6 (17...Nd7 18.Qd3 Qe7 19.Re1+–) 18.Qd3 (better is 18.Ne5 Nd7 19.Nd3+–) 18...Bg4?? (better is 18...Bf2 19.Kf1 Nd7+–) 19.Qd8 Qd8 20.Rd8 Bf8 21.Ba3 (21...Nd7 22.Ra8+–) 1–0. Graf,Michael – Noppen,S, Staufer op, 1998.

9.Be2 Bb4 10.Nbd2 Bc3 11.Bc3 dc3 +=.

9.Be2 Re8 10.0–0 e5 11.Nbd2 b6 12.Re1 (12.Ne5!? a6 13.Bf3+=) 12...Bb7 13.a3 Nbd7 14.Qc2 Ng4 (14...a6 15.ba6 Ra6 16.Nb3+=) 15.h3 Nh6 16.Ne4 f5 17.Ng3 Nf6 18.Bf1 (18.Nd2 e4+=) 18...Bf3 19.gf3 f4 20.Ne4 Ne4 21.Re4 (21.fe4!? a6 22.ba6 Ra6 23.Qb3+=) 21...Qg5 22.Kh2 Re6 23.Bg2 Nf7 24.Qe2 (24.Rae1 a6–/+) 24...Rae8 (24...Nd6 25.Rg1–+) 25.Rg1 (25.Qd1!?–/+) 25...Nd6–+ 26.Bh1 Qe7 27.a4 Qb7 28.Qd1 Ne4 29.fe4 Qf7 30.Bf3 Rh6 31.Rg5 Qf6 32.Qg1 Be7 33.Bg4?? (better is 33.Rg4–+) 33...Qg5 34.Be6 (34.Bd7 Qh4 35.Qg2–+) 34…Re6 0–1. Fournier,Frederic – Doyon,Michel, Ch Club, 1999.

9.Be2 Re8 10.Nbd2 b6 11.0–0 a6 =.

9.Be2 Re8 10.Nbd2 b6 11.Ne5 Bb7 (11...a6 12.Bf3 Ra7 13.ba6=) 12.Bf3 Qc7 (12...Re7 13.0–0 a6 14.Nb3=) 13.Qe2 (13.Bb7 Qb7 (< 13...Qe5 14.Qe2 Nbd7 15.Ba8 Ra8 16.Nb3+/–) 14.Qf3 Qf3 15.Ndf3 Rd8=) 13...Nbd7 (13...Nd5 14.0–0=+) 14.Bb7 Qb7 15.Ndf3 (15.f4 Qc7=) 15...Ne5=+ 16.Qe5 Red8 (16...Nd7 17.Qg3 Bb4 18.Kd1=+) 17.a4 (17.0–0 Qb8=) 17...Bb4 (17...Bd6 18.Qe2=) 18.Ke2 Bc3 (18...Bc5 19.a5=) 19.Bc3+= dc3 20.Qc3 a5 (20...Rac8 21.Rhe1+=) 21.Rhd1+/– Rac8 22.Qe5 Rc5 23.Qg3 Ne4? 24.de4+– Qe4 (White gets strong play along the open d–file) 25.Kf1 Rd1 26.Rd1 Qc4 27.Kg1 h6 28.h3 Qa4 29.Rd8 Kh7+/– 30.Rd7 Qa1 31.Kh2 Qf6 32.Nd4 e5 33.Nb3 Rb5?? 34.Qd3+– g6 35.Qb5 Qf4 36.Kg1 a4 37.Qd5 Kg8 38.Re7 ab3 39.Qe5 Qc1 40.Kh2 b2 41.Re8 Kh7 42.Qh8# (42.Rh8#) 1–0. Mroz,Antoni – Salwa,Jan, corr Poland, 1986.

9.Be2 Re8 10.Nbd2 e5 11.0–0 =+.

9.g3 a6 A) 10.Qa4–/+ e5 11.Bg2 (11.Ne5 Re8 12.f4 Nbd7 13.Kf2 Ne5 14.fe5 Ng4 15.Kg1 Re5 16.Bc1–+) 11...Re8 12.Nfd2 Qc7 13.Ne4 Ne4 14.Be4 Nd7 15.Ba3 Ba3 16.Na3–/+; B) 10.ba6 B1) 10...Na6 11.Bg2 (11.Nbd2 Qd6 12.Bg2 e5 13.0–0 Nb4 14.Nb3 Bf5 15.Ne1 Ra2 16.Ra2+=; 11.a3 Re8 12.Ne5 Qc7 13.f4 b5 14.cb5 Bb7 15.Rg1 Qa5 16.Nd2+=) 11...Bb4 12.Nbd2 Bc3 13.Bc3 dc3 14.Nb1 Nb4 15.Nc3 e5 16.0–0=; B2) 10...Ra6 11.Qe2 (11.Bg2 Nc6 12.0–0 e5 13.Re1 Re8 14.Bc1 Bf5 15.a3 Qd6 16.Qb3–/+; 11.Bc1 Nc6 12.Bg2 Qa5 13.Bd2 Qb6 14.Qc2 Nb4 15.Bb4 Bb4 16.Nfd2–/+) 11...Qa5 12.Nfd2 Nc6 13.Bg2 Qb4 14.Bc1 e5 15.0–0 Re8 16.Ne4+=.

9.g3 Bb4 10.Nbd2 Bc3 11.Qc2 =.

9.g3 e5

10.Ne5 Re8 11.f4 Nbd7 –/+.

10.Bg2 Bb4 11.Nbd2 Bc3 12.Qc2 Bb2 13.Qb2 =+.

10.Bg2 Bb4 11.Nbd2 Re8 12.0–0 Qc7 13.Re1 Bf5 14.Ne5 Nbd7 15.Nef3 Bc3 16.Bc3 +=.

10.Bg2 Bb4 11.Nfd2 Nbd7 12.0–0 Nc5 13.Nb3 Re8 14.Nc5 Bc5 15.Qf3 a6 16.a4 –/+.

10.Bg2 Qc7 11.Qd2 (11.Qe2 Re8 12.0–0 Bf5 13.Re1 Nbd7 14.Nbd2 a6 15.a4 Bd6 16.Nb3+=; 11.0–0 Re8 12.Re1 a6 13.a4 Nbd7 14.Qe2 Bd6 15.ba6 Ra6 16.Na3+=) 11...a6 12.a4 Bf5 13.0–0 ab5 14.cb5 Re8 15.Rc1 Qe7 16.Ba3 +=.

10.Bg2 Qd6 11.0–0 Nbd7 (11...Re8 12.Ng5 a6 13.ba6 Na6 14.f4 Nb4 15.a3 Nc6 16.Ne4+=) 12.a4 (12.Re1 a6 13.a4 Re8 14.Nbd2 Bb4 15.Qb3 Ra7 16.Ba3+=) 12...Rb8 (12...Re8 13.a5+= Qc7 14.Bc1 Bb4 15.a6 Nc5 16.Bg5=; 12...a6 13.Re1 Re8 14.Nbd2 Bb4 15.Qb3 Ra7 16.Ba3+=) 13.Nbd2 (13.Re1 a6 14.Nbd2 Re8 15.Nh4 Bb4 16.Nf5=) 13...b6 (13...Re8 14.Re1 Bb4 15.Qe2 Qc7 16.h3+=) 14.a5 (14.Ng5 Bb7= 15.Bb7 Rb7 16.f4=; 14.Re1 Bb7 15.Qe2 Bb4 16.Bc1+=) 14...Bb7 (14...a6 15.Qb3 (15.ba6 ba5 16.Nb3 Ba6 17.Nc5 Nc5 18.Ba3+=) 15...Qc7 16.ba6–/+) 15.Ng5 (15.ab6 Qb6 16.Ba3= (16.Nb3 Bd6=)) 15...Rfe8 (15...Bg2 16.Kg2 a6 17.Nge4 (worse is 17.ba6 ba5 18.Bc1 Qa6–/+) 17...Ne4 18.Ne4+=) 16.Bb7 (16.Nge4=) 16...Rb7 17.Qf3 Rbb8 (17...Qc7 18.a6 Rbb8 19.Nge4=) 18.ab6 ab6 (18...Qb6 19.Ra6 Qc7 20.Rfa1=) 19.Ra7+= Nf8. Demoulin,J (2070) – Leonard,Fabrice, TCh2–BEL, 2003.

10.Bg2 Bd6 11.0–0 (11.Qe2 Re8 12.0–0 a6 13.a4 b6 14.Re1 Bb7 15.Ba3 ab5 16.ab5+=) 11...Re8 12.Re1 Qc7 13.Ba3 a6 14.Bd6 Qd6 15.Nbd2 Nbd7 16.Qe2 +=.

10.Bg2 Re8 11.0–0 a6 12.Ba3 Qc7 13.Bc5 Qc5 14.ba6 Na6 15.Re1 Bf5 16.Qd2 +=.

6.Nf3 de3

7.de3 b6 8.Qd8 Kd8 9.g3 (9.Bd3 Bb7+/–) 9...Bb7+= 10.Bg2 Nbd7 11.0–0 Rb8 (11...a6 12.Rd1 ab5 13.Ne5 Bg2 14.Nf7 Ke7 15.Nh8=) 12.Rd1+/– Be7 (12...Ke8 13.Nc3+/–) 13.Ne5 Ke8 14.Nd7 Nd7 15.Bg7 Rg8 16.Bb2 Bg2 17.Kg2 f5 18.Nd2 Nf6 19.Nf3 h6 20.Ne5 h5 21.Nc6 (21.a4 Rd8+–) 21...Rb7 (21...Ra8 22.h3+/–) 22.Ne7 (22.Rd3!? Nd7+–) 22...Ke7+/– 23.Bf6 Kf6 24.Rd6 Re7 25.h4 Rg4 26.Rc1 Reg7 27.Kh3 Ke5 28.Rd2 Re4 29.f4 (29.Rd8 Kf6+/–) 29...Kf6 30.Rc3 Re7 31.Kg2 (31.Rd6 Rg7+/–) 31...e5 32.fe5 (32.Kf3 ef4 33.gf4 Re8+/–) 32...R7e5 33.Kf3 Ke6 (33...Rg4!?+=) 34.Rd8+/– Kf7 35.Ra8 Re7+/– 36.Ra3 Rc4 37.R3a7 Rb4 38.a4 Ra7 39.Ra7 Kf6 40.Rc7 Ra4+= 41.Rc6 Ke5 42.Rb6 (The passed pawn on b5 quickly leads to threats) 42...Rb4 43.Rb8 c4 44.Rc8 Kd5 45.Kf4 Rb5 46.Kf5 Rc5 47.e4 Kd6 48.Rc5–+ Kc5 49.e5 c3–+ 50.e6 c2 51.e7+– c1Q 52.e8Q Qf1? 53.Kg5 Qf3 54.Qe5 Kc6 55.Qf6 Qf6 56.Kf6 Kd7 57.Kg6 Ke7 58.Kh5 Kf7 59.Kg5 Kg7 60.g4 Kh7 61.Kf6 Kh6 62.g5 Kh7 63.g6 Kg8 64.g7 Kh7 65.Kf7 (65...Kh6 66.g8Q Kh5 67.Qg5#) 1–0. Istvanny (1680) – ANZARBOND (1635), internet, 2007.

7.de3 Qd1 8.Kd1 Nbd7 =.

7.fe3 a6 8.ba6 Na6 9.Be5 =.

7.fe3 Be7 8.Be2 0–0 9.0–0 a6 10.Qa4 +=.

7.fe3 Be7 8.Be2 0–0 9.0–0 b6 10.Nc3 Bb7 11.Qc2 Qc7 12.Ng5 g6 (12...Nbd7 13.Bd3 h6 14.Nge4=) 13.Bf3 Bf3 14.Nf3 Nbd7 15.Ne4 Rfd8 16.Qc3 e5 17.Neg5 Bd6 18.d3 Re8 19.e4 Rad8 20.a4 Nf8 21.a5 N6d7 22.Nf7 Kf7 23.Ne5 Ke6 24.Nc6 Ra8?? (better is 24...Bh2 25.Kh1 Be5+=) 25.d4 (25.Qg7 Bh2 26.Kh1+–) 25...cd4?? (better is 25...Bh2 26.Kh1 Qg3+–) 26.Qh3# 1–0. Scholbach,Tillmann (1775) – Ehrhardt,Eric (2060), Leipzig VfB op, 2004.

7.fe3 Be7 8.Be2 0–0 9.0–0 Ne4 10.Nc3 Nc3 11.Bc3 Bf6 (11...a6 12.Qa4+=) 12.Bf6+/– Qf6 13.d4 cd4 14.ed4 Qh6 15.Qc2 (15.Qc1 Qg6+/–) 15...a6+= 16.a4 ab5 17.ab5 Ra1 18.Ra1 Qe3 19.Kh1 Nd7 20.Qd3 Qd3 (20...Qf4 21.Rf1+/–) 21.Bd3 f6 22.Ra7 e5 23.Bf5 (23.Be4 ed4 24.Bd5 Kh8 25.Bb7 Bb7 26.Rb7 Nc5+–) 23...ed4 (23...Rd8 24.Bd7 Rd7 25.Ra8+=) 24.Be6 Kh8 25.Bd7 Bd7 26.Rb7 (The passed pawn on b5 will quickly become a dangerous weapon) 26...Bc8 (better is 26...Rd8!?+/–) 27.Rb8+– Re8 (27...Kg8 28.Nd4 Bd7 29.Rf8 Kf8 30.b6+–) 28.b6 (28...d3 29.b7+–) 1–0. Buss,Michael – Eldridge, corr CCLA, 1990.

7.fe3 b6

8.d3 a6 9.Ne5 ab5 10.Qf3 =.

8.d3 Bb7 9.Nbd2 (9.e4 Ng4+=) 9...Nbd7 (9...Ng4 10.e4+=) 10.a4 Be7 11.a5 (11.Be2 Ng4 12.Nf1 Bh4 13.Nh4 Qh4 14.g3 Qh3 15.Bg4 Qg2 16.Bg7 Rg8=) 11...a6 (11...ba5 12.Nb3=) 12.ba6 Ra6 13.ab6 Qb6 14.Rb1 Qc7 15.Qb3 (15.Qc1 0–0–/+) 15...Rb6 16.Qc3 0–0 17.Be2 Nb8 (17...Bd6 18.e4+=) 18.0–0+= Nc6 (18...Nbd7 19.Ra1=) 19.Ne4 (19.d4 cd4 20.Nd4 Bb4+=) 19...h6 (19...Nb4!?+=) 20.Nfd2 e5 21.Nf6 Bf6 22.Ne4 Be7 23.Rf5 (23.Bh5 f5 24.Ng3 Bg5 25.Nf5 Bc8=) 23...Bc8 (23...Rb8 24.Rff1+=) 24.Rf2 f5 25.Nd2 (25.Ng3 Bh4+=) 25...Bg5+= 26.Rf3 Bb7 27.Rbf1 Ne7 28.Rh3 Bf6 29.Qc2?? Ra8?? 30.Ra1 Ra1 31.Ba1 Ra6 32.Bc3 e4 33.Bf6 ed3 34.Bd3 Rf6 35.Qc3 Qd6 36.Rg3 f4 37.ef4= Qf4 38.Nf3?? Qe3–+ 39.Kf1 Qf4 40.Kg1= Qe3 Twofold repetition 41.Kh1?? Nf5!!–+ 42.Rh3 Rd6 43.Ng1?? Qf2 44.Nf3+= Nd4 45.Rg3 Rf6 ½–½. Freiberger,Jonas (1915) – Kalla,Christian (1690), Werther Schloss op–B 8th, 2002.

8.Be2 Bb7

9.a4 Nbd7 10.0–0 a5 11.Ng5 h6 12.Nh3 Bd6 13.Nf4 Qc7 14.g3 0–0–0 15.Nh5 Bf8 16.Nf6 Nf6 17.Bf3 Be7 18.Bb7 Kb7 19.Qf3 Ka7 20.d3 Rd3 21.Nc3 Qe5 22.Rab1 Qe3 23.Kh1 Qf3 24.Rf3 Rf3 25.Rd1 Rd8 26.Rd8 Bd8 27.Nd1 Rd3 28.Nf2 Rd2 29.Bf6 Bf6 30.Kg2 Ra2 31.Kf3 Ra4 32.Ne4 Rc4 33.Nd6 Rb4 34.h4 a4 35.Nf7 Rb5 36.Nd6 Rb3 37.Ke4 a3 38.Nc4 Rg3 0–1. guest1151 – guest129, ICC, 1999.

9.0–0 Nbd7

10.Na3 Bd6 =.

10.Nc3 Be7 11.d4 0–0 (11...cd4 12.Nd4 0–0 13.Rc1=) 12.d5+= ed5 13.cd5 (< 13.Nd5 Nd5 14.cd5 Nf6=+) 13...Re8 14.e4 Bd6 15.Bd3 (15.Qc2 Ng4 16.Qd2 a6=) 15...Ne5 16.Ne5 (16.Qe2 Nd3 17.Qd3 a6=) 16...Be5 17.Rf5 (17.Qf3!?=) 17...Qd6–/+ 18.h3 Bc8 19.Rf1 (19.Rf3!?–/+) 19...Bd4 20.Kh1 Bc3 (better is 20...Ng4! 21.e5 Re5–+ (21...Qe5?! 22.hg4 Bc3 23.Bh7 Kh7 24.Qd3 Kg8 25.Bc3=+; 21...Ne5?! 22.Qh5 g6 23.Qd1 Nd3 24.Qd3–+)) 21.Bc3–/+ Ne4 22.Be4 Re4 23.Qf3 (23.Qd3 Re7=+) 23...Re7 (23...f5 24.Rae1 Qd5 25.Rd1=+) 24.Rae1=+ Bd7 25.Re7 Qe7 26.d6 Qe8 27.Re1 Be6 28.d7 Qf8=+ 29.Rd1 Rd8 30.Qb7 Qe7 31.Qa7 Rd7 32.Qb8?? Qf8–/+ 33.Qf8 Kf8 34.Rd7 Bd7 35.Be5 Bb5–+ 36.Bc7 Bc4 37.Bb6–/+ Ba2 38.Bc5 Ke8 39.Kg1 Kd7 40.Kf2 Ke6 41.Bd4 g6 42.Ke3 f5 43.h4 h6 44.Bg7 Bd5 45.g3 h5 46.Kf4 Kf7 47.Ba1 Bg2 48.Bb2 Bc6 49.Bc3 Bd5 50.Bd4 Bc6 51.Bc3 Bd5 52.Ke5 Bb7 53.Kd6 Bf3 54.Bd4 Bg2 55.Be5 Bh1 56.Bd4 Bf3 57.Be5 Bh1 58.Bd4 Bf3 59.Kd7 Bh1 60.Be5 Bg2 61.Bd4 Bh1 62.Kd8 Bg2 ½–½. Fredek (2065) – HeerdeVooruit, Freundschaftspartie, 5m + 0s, 2006.

10.d4 cd4 11.ed4 Be7 (11...Qc7 12.Nbd2=) 12.Nc3 (12.Bd3 0–0=) 12...0–0 (12...Qc7 13.Qd2=) 13.Bd3 h6 (13...Qc7 14.Qe1=) 14.Qe1 (14.a4 Bd6+=) 14...Qc7 (14...Nc5 15.Be2 Bf3 16.Rf3 Qd4 17.Kh1–/+) 15.Qh4 (15.Rd1 Bd6=) 15...Rac8 (15...Rad8 16.Rad1+=) 16.Rae1 (16.Rad1 Rfd8=) 16...Rfd8 (better is 16...Nd5 17.Nd5 Bh4 18.Nc7 Be1 19.Ne6 fe6 20.Ne1 a6=) 17.g4?? (better is 17.Qh3=) 17...Nc5!–+ 18.Rd1 (18.dc5 Qc5) 18...Nd3 19.Rd3 Ne4 20.Qh5 Bf6 21.Rfd1 Qc4 22.Ne5 Be5 23.Qe5 Nc3 24.Bc3 Rd5 25.Qe4 Qb5 26.Be1 Rd7 27.Qe5 Qd5 28.Qd5 Bd5 29.a3 Rc2 30.R3d2 Rdc7 31.Rc2 Rc2 32.Rd2 Rc3 33.Ra2 Rc4 34.Rd2 b5 35.Kf2 a6 36.Ke3 Rc1 37.Bg3 Bc4 38.h3? Rc3 39.Kf2 Ra3 40.Bd6 Rh3 (41.Kg2 Rc3–+) 0–1. Hellerbrand,Jochen – Voith,Walter, Oberpfalz–ch M2, 1997.

10.d4 Bd6 11.Qd3 =.

10.d4 Ne4 11.Nbd2+= Ndf6 12.Qc2 (12.Ne4 Ne4 13.Ne5 Qg5+=) 12...Qc7 13.Ne5 (13.Ne4 Be4 14.Bd3 Bf3 15.Rf3 cd4 16.ed4 Bd6+=) 13...Nd2 14.Qd2 Ne4 (14...Bd6 15.Rad1=) 15.Qc2 (15.Rf7 Qf7 16.Nf7 Nd2 17.Nh8+=) 15...f5 16.a4 (16.Bh5 g6 17.Bf3 Bd6=) 16...Bd6= 17.a5 (17.Bh5 g6 18.Bf3 Rd8+=) 17...Be5 18.de5 Rd8 (18...ba5 19.Bc3=) 19.Bf3 (19.Bh5 g6 20.Bf3 ba5+=) 19...Ng5 (19...0–0 20.a6 Ba8 21.Rad1=) 20.Bb7 (20.Bh5 g6 21.Be2 Ne4=) 20...Qb7= 21.Rad1 0–0 22.Rd6 Ne4 23.Rd3 (23.Re6 Rd2 24.Qc1 Qd7=) 23...Qc7 24.Rfd1 (24.ab6 ab6 25.Rfd1 Rd3 26.Rd3 Rd8+=) 24...Kf7 (24...ba5 25.Rd8 Rd8 26.Qa4–/+) 25.Qe2 (25.a6 Kg8=) 25...g6 (25...ba5 26.Rd8 Rd8 27.Qf3–/+) 26.Qe1 (26.a6 Kg8=) 26...Qe7 (26...Rd3 27.Rd3 ba5 28.Ra3+=) 27.Qe2 (27.a6 Rd3 28.Rd3 Rd8+=) 27...Rd3 (27...ba5 28.Bc3+=) 28.Qd3 Rb8 (28...ba5 29.Bc3+=) 29.h3 (29.ab6 ab6 30.Qf1 Ra8+=) 29...Ke8 30.ab6 ab6 31.Qa3 Qb7 32.Ra1 (32.Qd3 Ra8+=) 32...Ke7 (32...Rd8 33.Qa6 Qc7 34.Kh2+=) 33.Bc3 (33.Rd1 Ra8 34.Qd3 Ke8+=) 33...Rd8 34.Be1 Rb8 35.Bh4 (35.Bc3 Qd7+=) 35...g5+= 36.Be1 h6 37.Qd3 Rd8 38.Qe2 Kf7 (38...Ra8 39.Qd1+=) 39.Ra6= Ra8 (39...Qc7 40.Qf3=) 40.Qd1 Ra7 (40...Ke7 41.Qa4 Ra6 42.ba6=) 41.Qh5 (41.Qa4 Ra6 42.ba6 Qa7+=) 41...Kg7= 42.Qe8 Ra6 43.ba6 Qa6 44.Qe6 Qa1 45.Qe7 Kg6 46.Qe6 Kg7 47.Qe7 ½–½. Basson,Heinrich (1835) – Modi,Yashil (1615), Steinitz Chess Festival, 2015.

7.fe3 Nbd7

8.Nc3 a6 9.a4 Bd6 10.Qc2 (10.Be2 e5=) 10...0–0 (10...Qe7 11.Bd3=) 11.d4 (11.Be2 Ne5=) 11...Ng4 (11...cd4 12.ed4 e5 13.c5 ed4 14.cd6 dc3 15.Qc3 Re8 16.Be2 ab5 17.ab5 Ra1 18.Ba1=+) 12.Qe2 (12.Qd2 Ndf6=) 12...cd4=+ 13.ed4 Bh2 (13...e5 14.Ne4 Bb4 15.Nfd2 ed4 16.Bd4–+) 14.Nh2 (14.Rh2 Nh2 15.Nh2 Qh4 16.g3 Qg3 17.Qf2 Qf2 18.Kf2 Rd8=) 14...Qh4=+ 15.g3 (15.Kd2 Nh2 16.Kc2 Qh6+=) 15...Qg3= 16.Kd2 Qf4 (16...Nf2 17.Bg2 ab5 18.Rhf1=) 17.Ke1 (better is 17.Kc2 Ne3 18.Kb1=) 17...Ndf6?? (better is 17...Qg3 18.Kd2 Nf2=) 18.Ng4+– Ng4 19.Ne4 (better is 19.Rh3!?+–) 19...f5+/– 20.Nf2?? (better is 20.Rg1 e5 21.Nf2 ed4 22.Rd1+–) 20...Nf2–+ 21.Qf2 (better is 21.Rg1 Ne4 22.Kd1–+) 21...Qe4 22.Kd2 Qh1 23.Qg3 Qh6 24.Kc2 f4 25.Qf3 ab5 26.cb5 Qh2 27.Kb3 Qg3 28.Be2 Qf3 29.Bf3 h6 30.Rc1 Rb8 31.a5 b6 32.a6–/+ Rf7 33.Ba3 Ba6 34.ba6 Rd8 35.Bb7 g5 36.Rc8 Rc8 37.Bc8 Ra7 38.Be6 Kg7 39.Bc4 g4 40.Bd6+= f3 41.Bg3 Kg6 42.Kb4 Kg5 43.Kb5+/– h5 44.Kb6 Ra6? 45.Ba6 h4 46.Be1 g3 47.d5 Kg4 48.Bc8 Kf4 49.Bh3 f2 50.Bf2 gf2 51.d6 Kg3 52.Bf1 h3 ½–½. Veer – Ramsaran, Surinam, 1980.

8.Nc3 a6 9.a4 e5 10.Be2 =.

8.Nc3 a6 9.Be2 e5 =.

8.Nc3 Bd6 9.Be2 =.

8.Nc3 Be7 9.Be2 b6 10.0–0+= Bb7 11.Ng5 (11.Qe1 Bd6=) 11...h6 (11...Bd6 12.Bf3 Bf3 13.Nf3= (< 13.Rf3 Ne5–/+)) 12.Bf3+= hg5 (12...Bf3 13.Nf3 (13.Qf3? hg5 14.Ne4 Qb8–+) 13...Qc7 14.Qc2=) 13.Bb7 Rb8 14.Bc6 Bd6 15.g3 Be5 (15...Qc7 16.Qe2+=) 16.Qg4?? (better is 16.d4 Bd6 17.Qd3 cd4 18.Qd4+/–) 16…Ng4–+ (17.Ne4 Bb2 18.Nd6 Ke7 19.Nf7 Qc7 20.Nh8 Rh8–+) 0–1. Wiley,R – York,B, corr, 1987.

8.Nc3 Be7 9.Be2 Bd6 10.0–0 =.

5.c4 Bd6=+

6.a4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.a4 Bd6).

6.d4 Nbd7 7.cd5 (7.dc5 Nc5 8.Nc3 (8.cd5 Nce4 9.Nc3 Bb4 10.Qd4 Qa5 11.Nge2–/+) 8...dc4 9.Bc4 0–0 10.Nf3 Qc7 11.Rc1=; 7.Nf3 A) 7...0–0 8.Nc3 (8.dc5 Nc5 9.cd5 Nd5 10.Bc4 Nb6 11.Be2=; 8.cd5 ed5 9.dc5 Nc5 10.Be2 Bg4 11.Nc3=; 8.Be2 cd4 9.Qd4 e5 10.Qh4 Bb4 11.Bc3+=; 8.Nbd2 cd4 9.Nd4 e5 10.N4f3 e4 11.Nd4+=) 8...Re8 9.cd5 ed5 10.dc5 Nc5 11.Be2=; B) 7...cd4 8.Bd4 (8.Nd4 Nb6 9.cd5 Nbd5 10.Bc4 0–0 11.Nd2=; 8.Qd4 e5 9.Qh4 g5 10.Qh6 Rg8 11.Ng5+=) 8...dc4 9.Bc4 0–0 10.Nbd2 e5 11.Bb2=; 7.Nc3 Qa5 (7...cd4 8.Qd4 Be5 9.Qd2 dc4 10.Nf3 Bc3 11.Bc3+=) 8.dc5 (8.Nf3 0–0 9.Qd2 dc4 10.Ne4 Bc7 11.Nf6=) 8...Bc5 9.cd5 Nd5 10.a3 0–0 11.Qd2=; 7.Bd3 0–0 (7...cd4 8.Bd4 e5 9.Bc3 Nc5 10.cd5 Nd5 11.Bc4+=; 7...dc4 8.Bc4 cd4 9.Bd4 0–0 10.Nf3 e5 11.Bb2+=) 8.Nf3 cd4 9.Nd4 Bb4 10.Bc3 Bc3 11.Nc3–/+) 7...ed5 8.dc5 Nc5 9.Nf3. Wolfertz – Jendrossek, corr SOK–87–07, 1987.

6.d4 0–0

7.Nf3 b6 8.Be2 Bb7 9.0–0 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.d4 b6 9.0–0 Bb7).

7.Nf3 b6 8.Be2 Nbd7 9.0–0 Bb7 10.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.a4 Bb7 10.d4).

7.Nf3= dc4 8.Bc4 cd4 9.Qd4 Qe7 10.Qh4 =.

7.Nf3= dc4 8.Bc4 Nbd7 9.0–0 Qc7 10.dc5 Bc5 11.Qe2 =.

7.Nf3= dc4 8.Bc4 Nbd7 9.0–0 Ne4 10.Nbd2+= Ng5 11.h4 (11.Rc1 a6+=) 11...Nf3= 12.Nf3 b6 (12...Qe7 13.Rc1=) 13.d5 (13.Qd3 Nf6+=) 13...e5 (13...Nf6=) 14.g3 (14.Ng5 h6 15.Ne4 Qe7+=) 14...e4 (14...a6 15.Qc2=+) 15.Ng5= Qe7 (better is 15...Be5 16.Be5 Ne5=) 16.Qh5?? (better is 16.Qc2 f5 17.Ne6=) 16...h6–+ 17.Ne4 (17.Nh3 Be5 18.d6–+) 17...Ne5?? (better is 17...Qe4 18.Be2 a6–+) 18.Be5 (better is 18.Nd6 Nc4 19.Nc4+–) 18...Be5+/– 19.Rad1 Bf6 20.Qf3+– Be5 21.Qe2 Bb7 22.f4 Bc7 23.Qf3 Rfe8+= 24.Nd2 Qe3 25.Qe3 Re3 26.Kf2 Rae8 27.Rfe1 Re1 28.Re1 Re1 29.Ke1 Kf8 30.Kf2 Bc8 31.Nf1 Bf5 32.Kf3 Bb1 33.g4 f5 34.h5 Be4 35.Kg3 fg4 36.Kg4 Ke7 37.Ng3 Bc2 38.Nf5 Kf6 39.Ne3 Be4 40.Bb3 g6 41.hg6 Kg6 42.Nc4 Bd5 43.Ne5 Be5 44.Bd5 Bc7 45.f5=+ Kf6 46.Be6 Bd6 47.Kh5 Bf4 48.Kg4 Bc1 49.Kh5 Bg5 50.a4 Bf4 51.Kg4 Ke5 52.Ba2 h5–/+ 53.Kh5 Kf5 54.Bb1 Ke5 55.Kg4 Bh6 56.Kf3 Kd4 57.Ke2 ½–½. Roczniak,Jan – Stefanski,J, corr Poland, 1980.

7.Nf3= dc4 8.dc5 Bc5 9.Qd8 Rd8 10.Bf6 gf6 11.Bc4 a6 =.

7.Nf3 Nbd7

8.cd5 ed5 9.dc5 Nc5 10.Be2 =.

8.Bd3 b6

9.0–0 Bb7

10.Nbd2 Rc8

11.Qb3 cd4

12.ed4!? dc4 13.Nc4 Bd5 14.Qa4 Bf4 15.Ba3 Re8 16.Nd6 Bd6 =+.

12.ed4!? dc4 13.Nc4 Bf4 14.Ba3 Bf3 15.Bf8 Nf8 16.gf3 Qd4 =+.

12.ed4!? Rc7 13.Qa4 dc4 14.Nc4 Be7 15.Ncd2 Nd5 16.Rfc1 Nf4 =.

12.ed4!? Rc7 13.Qa4 Ne4 14.Ba3 Ba3 15.Qa3 Nd2 16.Nd2 Qf6 =+.

12.ed4!? Rc7 13.Qa4 Bf4 14.Ba3 Re8 15.c5 Bd2 16.Nd2 bc5 =.

12.Nd4 Nc5–/+ 13.Qa3 Qc7 14.cd5 Bh2 15.Kh1 Bd5 16.N4f3 Bd6 –+.

12.Nd4 Nc5–/+ 13.Qa3 Ng4 14.N4f3 Ne4 15.c5 Bc5 16.Qa4 Ne3 –+.

12.Nd4 Nc5–/+ 13.Qc2 Qc7 14.cd5 Bh2 15.Kh1 Bd6 16.de6 fe6 =+.

12.Nd4 Nc5–/+ 13.Qc2 Nd3 14.Qd3 dc4 15.Nc4 Bb8 16.Qe2?? Qc7 (17.g3 Qc4 18.Qc4 Rc4–+) 0–1. Frank,Volkmar – Plock,Joerg (1660), 2.LL Ost MVP Pasewalk–SAV Torgelow (1), 2008.

12.Nd4 Qc7 13.Qc2 Nc5 14.cd5 Bh2 15.Kh1 Bd6 16.de6 fe6 =+.

12.Nd4 Qc7 13.Qc2 Bh2 14.Kh1 Bd6 15.cd5 Qc2 16.Bc2 Bd5 –/+.

12.Nd4 Qc7 13.N4f3 Nc5 14.Qc2 Nd3 15.Qd3 dc4 16.Nc4 Qc4 –/+.

12.ed4 Ne4

13.Ba3 Nd2 14.Nd2 Qe7 15.Bd6 Qd6 16.Rfd1 Nf6 =+.

13.Ba3 Qe7 14.Bd6 Qd6 15.Rac1 Nd2 16.Nd2 Nf6 =+.

13.Ba3 Ndf6 14.Rad1 Re8 15.Rfe1 Bf4 16.Be4 Ne4 =+.

13.Rac1 Nd2 14.Nd2 Qh4 15.g3 Qh3 16.Nf3 Rfd8 –/+.

13.Rac1 Bf4 14.cd5 Nd2 15.Nd2 Bd2 16.Rc8 Bc8 –/+.

13.Rfc1 Nd2 14.Nd2 Bf4 15.cd5 Bd2 16.Rc8 Bc8 =+.

13.Rfc1 Bf4 14.Bc3 Qf6 15.Qb2 Nd2 16.Bd2 dc4 –/+.

13.g3=+ dc4 14.Nc4 Bd5 15.Rfc1 Ndf6 16.Qa4 a6 =+.

13.g3=+ Ndf6 14.Rac1 Nd2 15.Nd2 Qd7 16.Qa4 dc4 =+.

13.g3=+ Nef6 14.Rfc1 dc4 15.Bc4 Re8 16.Ba3 Qe7 =+.

12.ed4 Re8

13.Qa4 dc4 14.Bc4 Ne4 15.Ne4 Be4 16.Ne5 Qc7 =+.

13.Rac1 dc4 14.Rc4 Bf4 15.Rc8 Qc8 16.g3 Bh6 =+.

13.Rac1 Bf4 14.Rfe1 Ne4 15.Qb4 Nd2 16.Nd2 Qg5 –/+.

13.Rfc1 dc4 14.Rc4 Bf4 15.Rc8 Qc8 16.Qd1 a5 =+.

13.Rfc1 Bf4 14.Qd1 a5 15.Rc2 Ne4 16.Bc1 Qf6 =+.

13.Qd1 a5 14.Rc1 Bf4 15.Rc2 Ne4 16.Bc1 Nd6 =+.

13.Qd1 Bf4 14.Qe2 a5 15.Rfc1 dc4 16.Rc4 Rc4 =+.

13.Qd1 Nh5 14.cd5 Bd5 15.Ne4 Ndf6 16.Nd6 Qd6 =+.

13.Rfe1 dc4 14.Nc4 Bd5 15.Qa4 Bf4 16.Nfe5 Ne5 =+.

13.Rfe1 Rc7 14.Ne5 Be5 15.de5 Nc5 16.Qc2 Nd3 =+.

13.Rfe1 Bf4 14.Qd1 a5 15.Qe2 Rc7 16.g3 Bd6 =+.

12.ed4 Bf4

13.Ba3 Re8 14.Rfc1 Ne4 15.Bb4 Qf6 16.Qb2 Nd2 –/+.

13.Rac1 dc4 14.Rc4 Rc4 15.Bc4 Qc7 16.Bd3 Bd5 =+.

13.Rac1 Re8 14.Rfd1 Ne4 15.Rc2 Nd2 16.Nd2 Qg5 =+.

13.Rfc1 Ne4 14.Bc3 Qf6 15.Qd1 Nd2 16.Nd2 dc4 –+.

13.Qd1 a5 14.Qe2 Rc7 15.g3 Bd6 16.Rac1 Qe7 =+.

13.Qd1 dc4 14.Nc4 Qc7 15.g3 Be4 16.Be4 Ne4 =+.

13.Qd1 Rc7 14.Ba3 Re8 15.g3 Bd2 16.Nd2 e5 =+.

13.Qd1 Ne4 14.cd5 Nd2 15.Nd2 Bd5 16.g3 Bd6 =+.

6.d4 cd4

7.Qd4 e5 8.Qh4 (8.Qd1 Bb4 9.Bc3 Bc3 10.Nc3 d4 11.ed4+=; 8.Qd2 dc4 9.Bc4 Ne4 10.Qd3 Bb4 11.Kf1+=) 8...Bb4 9.Bc3 Bc3 10.Nc3 Qa5 11.Rc1 +=.

7.Bd4 Ne4 8.Nd2 Bb4 9.Ngf3 dc4 (better is 9...e5 10.Bb2 Bg4–/+) 10.Qc2+= (10.Bg7? Rg8 11.Bd4 Nd2 12.Nd2 c3 13.Bc3 Bc3–+; < 10.Bc4 e5! 11.Bf7 Kf8–/+) 10...Nd2 11.Nd2 Qg5 12.Rd1 0–0 (12...Qb5? 13.Bg7 (13.Bc4?! Qg5+=; 13.Qc4 Qc4 14.Bc4 Nc6=+) 13...Rg8 14.Qh7 (14.Bc4?! Qg5 15.Bf1 Bd7+=) 14...Rg7 15.Qg7 Bd2 16.Rd2 Qb1 17.Ke2+–) 13.Qc4 Ba5 14.f4 Qd5 15.Qd5 ed5 16.Be2 a6 17.Bf3 ab5 18.Bd5 Nc6 19.0–0 Nd4 20.ed4 Rd8 21.Bb3 Rd4 22.Nf3 Rd1 23.Rd1 Bb6 24.Kh1 Bg4 25.Rd5 Be3 26.f5 b6 27.Ne5 Bf5 28.Nf7 Bc2 (28...Kf7 29.Rd8) 29.Bc2 Kf7 30.Rf5 Ke6 31.Rf3 Bd4 32.Bh7 Kd6 33.Rd3 Kc5 34.Rd2 b4 35.g3 Ra3 36.Bg8 Re3 37.Kg2 Bc3 38.Rd5 Kc6 39.Kf2 Re8 40.Bf7 Ra8 41.Rd3 Rf8 42.Rf3 Bf6 43.Bb3 Bd4 44.Ke2 Rf3 45.Kf3 Kd6 46.Ke4 Bf2 47.Kf5 Ke7 48.g4 Bh4 49.Kg6 ½–½. Markus,Robert (2270) – Knogler,R, FT–970039 B CiF, 1998.

7.Bd4 e5 8.Bb2 Bb4 9.Bc3 Bc3 10.Nc3 d4 11.ed4 +=.

7.Bd4 e5 8.Bc3 Be6 9.Nf3 Nbd7 10.c5 Bc5 11.Ne5 Ne5 12.Be5 =+.

7.Bd4 e5 8.Bc3 Bg4 9.Be2 Be2 10.Ne2 Qb6 11.a4 =.

7.Bd4 e5 8.Bc3 Bg4 9.Be2 Be6 10.Nf3 Nbd7 (10...dc4 11.Ne5 Be5 12.Qd8 Kd8 13.Be5+=) 11.c5 Bc5 12.Ne5 (< 12.Be5 Ne5 13.Ne5 d4–/+) 12...Ne4 13.Nd7 Qd7 (13...Nc3 14.Nc3 Qd7 15.0–0=) 14.0–0 (14.Bg7 Rg8 15.Bc3 Rg2–/+ (< 15...Nc3 16.Nc3 Rg2 17.b6=)) 14...Nc3 (14...0–0 15.Bd4=) 15.Nc3 0–0 16.Bd3 (16.Na4 Be7=) 16...Rac8 17.Ne2 Bg4 (17...Rc7 18.Rc1=) 18.Rc1 Rfe8 19.Rc2 (19.h3 Be6=) 19...f5 (19...d4 20.ed4 Bd4 21.Rd2=) 20.Qb1 g6 (20...Qd6 21.Rfc1=) 21.Nf4 Bd6 (21...d4 22.Qb3 Kh8 23.ed4 Bd4 24.Rc8 Rc8 25.h3+=) 22.Rc8+/– Rc8 23.h3 (< 23.Nd5 Bh2 24.Kh2 Qd5=) 23...Bf4 24.hg4 (24...Be5 25.gf5+/–) 1–0. Seack,Ingo – Kreppert, (year?).

6.cd5 ed5

7.Nf3 0–0 8.Be2 =+.

7.Nf3 Bg4 8.Be2 Nbd7 9.h3 Bf5 10.g4 Bg6 11.g5 =.

7.Nf3 Bg4 8.Be2 Nbd7 9.h3 Bf5 10.Nh4 Be6 11.Nf3 (11.Qc2 Ne4 12.Nf3 0–0=+) 11...0–0 12.0–0 Rc8 (12...Qe7 13.Nc3=+) 13.d3 (13.Nc3 Re8=+) 13...Bb8 (13...Re8 14.Nc3=+) 14.Nbd2 (14.a4 Re8=) 14...Re8 15.Rc1 (15.a4 Qb6=+) 15...Qa5 (15...Qb6 16.a4=+) 16.a4= a6 17.ba6 (17.Bc3 Qd8=) 17...Qa6=+ 18.Bf6 (18.Re1 Bd6=+) 18...Nf6 (18...gf6?! 19.Re1=) 19.d4 (19.Nb3 A) 19...Qa4?! 20.Nc5 Qd1 21.Rfd1= (< 21.Bd1 b6 22.Nb3 Rc1 23.Nc1 Bd7=+); B) 19...b6 20.a5 d4 21.ab6 Qb6–/+) 19...c4–/+ 20.Qc2 Bd7 21.Ra1 Bd6 22.Ne5 Be5–/+ 23.de5 Re5 24.Rfb1 Bc6 25.Qb2 Re7 26.Qd4 Ra8 27.Qc5 Ree8 28.Qd4 Qa7 29.Qb2? Qa5 30.Nf3 Qc7 31.Nd4–/+ Ra4 32.Ra4 Ba4 33.Qb7 Qb7 34.Rb7 Rc8 35.Ra7 Bd7 36.Bd1 g6 37.Bc2 Kg7 38.f3 Rb8 39.Rc7 (39.e4 de4 40.fe4 Re8–/+) 0–1. Gross,Wilhelm – Merten,Rainer, xxvi/02, 1994.

7.Nf3 Bg4 8.Be2 Nbd7 9.h3 Bh5 10.d3 (10.Nc3 Nb6=) 10...Qa5 11.Nc3 Bf3 (11...d4 12.Qa4 Qa4 13.Na4 de3 14.fe3=) 12.Bf3= (< 12.gf3 Be5 13.Rc1 Bc3 14.Bc3 Qb5–/+) 12...d4 (better is 12...0–0 13.0–0 Nb6+=) 13.ed4?? (13.Qa4 Qa4 14.Na4 de3 15.Bb7 ef2 16.Kf2+/–) 13...cd4–+ 14.Qd2 dc3 15.Bc3 Qb5 16.a4 Qb3 17.0–0 Qb6 18.Rfe1 Kf8 19.Rab1 Qd8 20.Rb7 Rc8 21.Ra7 Bb8 22.Rb7 Kg8= 23.Qb2 Nc5=+ 24.Bf6 gf6 25.Ree7? Nb7–+ 26.Rb7 Kg7 27.Be4 Qa5 28.g3 Be5 29.Qe2 Bd4 30.Kg2? (better is 30.Qg4!? Kh6 31.Qh4 Qh5 32.Qh5 Kh5 33.Rd7 Rc1 34.Kg2–/+) ½–½. Gross,Wilhelm – Merten,Rainer, xxv/12, 1994.

6.Nf3

6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4).

6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4).

6.Nf3 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Bd6).

6.Nf3 Bd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Bd7).

6.Nf3 0–0

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0–0 6.c4 c5).

7.d4 (--> 5.c4 Bd6 6.d4 0–0 7.Nf3).

7.Be2 Nbd7 8.0–0 Qe7 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 Qe7).

7.Be2 Nbd7 8.d3 Qe7 9.Nbd2 b6 10.0–0 Bb7 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.d3 Bb7 10.Nbd2 Qe7).

6.Nf3 Nbd7

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

7.d4 b6 8.Be2 Bb7 9.0–0 0–0 10.Nbd2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.d4 Bb7 10.Nbd2).

7.Be2 b6 8.0–0 Bb7 9.d4 0–0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.d4 Bb7).

6.f4 0–0

7.Nf3 a6 8.Na3 =+.

7.Nf3 Nbd7

8.a4 d4 9.Be2!? =.

8.a4 d4 9.g3 e5–/+ 10.Bg2 (10.fe5 A) 10...Be5?! 11.ed4 cd4 12.Bg2=+ (12.Bd4? Bd4 13.Nd4 Re8 14.Ne2 Ne5–+); B) 10...Ne5 11.Ne5 Be5–/+) 10...ef4 11.gf4 (better is 11.ef4 Re8 12.Kf2 Ne4 13.Kg1–/+) 11...Ng4 (better is 11...de3 12.de3 Qe7–+) 12.h3 Nh6 13.0–0 Nf5 14.ed4 (14.Re1 Re8 15.Na3 Nf6=+) 14...cd4 (< 14...Bf4 15.Qc2 Ng3 16.Re1=) 15.Qc2 (15.Ba3 Qc7=+) 15...Nf6 (15...Qf6 16.a5–/+) 16.Ne5=+ (16.Nd4?? Bc5 17.Qd3 Nd4–+) 16...Nh5 17.Nd3 Nfg3 18.Rf2 (18.Re1 Bf5 (< 18...Bf4 19.Qd1=+) 19.Qb3 Qh4–+ (19...Nf4?! 20.Nf4 Bf4 21.Bb7–/+)) 18...Bf5–+ 19.Qb3 Qh4 (19...Qe7 20.Ba3 Bd3 21.Qd3 Qe1 22.Bf1 Nf4 23.Rf4 Bf4 24.Bf8–+) 20.Na3 (20.c5 Bd3 21.Qd3 Nf4–+) 20...Bh3 (20...Rae8 21.Bd4 Ne2 22.Re2 Re2–+) 21.Rc1?? (better is 21.Bb7 Rae8 22.Qd1–+) 21...Bg2 22.Rg2 (22.Kg2 Qg4 23.Ne5 Nf4 24.Rf4 Qf4 25.Qg3 Qd2 26.Qf2 Qg5 27.Qg3 Qg3 28.Kg3 Be5 29.Kf3–+) 22...Rac8 (22...Qh1 23.Kf2 Ne4 24.Kf3 Nd2 25.Ke2 Rfe8 26.Kf2 Ne4 27.Kf3 Qh3 28.Ke2 Qg2 29.Ke1 Qh1 30.Ke2 Nhg3) 23.Qd1 (23.Re1 Rfe8 24.Rh2–+) 23...Qh1 24.Kf2 Ne4 (25.Kf3 Qh3 26.Ke4 Rcd8 27.Qh5 f5 28.Qf5 Qf5 29.Kf3 Qd3 30.Kf2 Rf4 31.Kg1 Rdf8 32.Re2 Qe2 33.Bd4 Rf1 34.Rf1 Rf1#) 0–1. Neuhof,KE – Dekeyser,E, corr ICCF EU/M/Gr/172 (year?).

8.a4 Qe7 9.Be2 =+.

8.Qc2 b6 9.Bd3 Bb7 10.0–0 h6 11.Nc3 Rc8 12.Ne2 Ne4 13.Ne5 Be5 14.fe5 Qg5 15.cd5 ed5 16.Be4 de4 17.Ng3 Rce8 18.Rf5 Qg6 19.Raf1 Qe6 20.Nh5 Bd5 21.Qc3 Ba2 22.Ng7 Kg7 23.R1f4 Kg6 24.Rf6 Nf6 25.Rf6 Kh7 26.Re6 fe6 27.Qa3 Bc4 28.Qa7 Kh8 29.Qb6?? Rf1# 0–1. Tonn – Starck, corr DDR.

8.Be2 dc4 9.Na3 a6 =.

8.Be2 Qc7 9.0–0 b6 10.Qe1 Bb7 11.Qh4 Rfe8 12.g4 (12.cd5 Bd5 13.Nc3 c4=) 12...Ne4 13.d3 Be7 14.g5 Nd6 15.Qh3 (15.Ne5 dc4 16.dc4 Ne5 17.Be5 Red8=) 15...a6 16.a4 Ra7 17.Nbd2 Rea8 18.Ne5 ab5 19.ab5 (Black creates threats along the open a–file) 19...Ra2 20.Rab1 (20.Nd7 Qd7 21.Ra2 Ra2–/+) 20...Ne5 21.fe5 Nf5 22.Bg4 Bg5 23.Bf5 ef5 24.Qg3 Bh6 25.Rf5 d4 (25...Qd7 26.Rf2–/+) 26.Nf1 g6 (26...Qd7!? 27.e4 Qe6–/+) 27.Rf2 de3 28.Ne3 Bg7 29.Ng4 h5 30.Nf6 Bf6 31.Rf6 Rd8 32.Qe3 Ba8 (better is 32...Kg7!?+=) 33.e6+/– Qb7? (better is 33...Rf8+/–) 34.ef7+– Kh7 35.Qe4 (35.f8N Rf8 36.Rc6=) 35...Qe4+/– 36.de4 Be4 37.f8Q?? (better is 37.Re1 Rf8 38.Re4 Rb2 39.Ree6+– (39.Rb6?! Rf7 40.Rbe6 Rff2+=)) 37...Rf8+– 38.Rf8 Bb1 (38...g5 39.Re1 Bd3 40.Re7 Kh6 41.Re6 Kh7 42.Rh8) 39.Rh8# 1–0. Sundin,Thommy (1890) – Hellstroem,Aake (1965), SandvikenS, 1988.

8.Be2 Qc7 9.0–0 e5 10.fe5 Ne5 11.Ne5 Be5 12.Be5 Qe5 13.Na3 Be6 14.cd5 Nd5 (14...Bd5 15.Rc1+=) 15.Nc4= Qg5 16.Rc1 Rad8 17.a3 (17.Qc2 f5=) 17...Rd7 (17...f5 18.Qc2+=) 18.Rf3 (18.Rf2 Nb6=) 18...Ne7 (18...Nb6 19.Qe1+=) 19.Rg3 (19.Qc2 Rfd8=) 19...Qf6 20.Rf3 Qh4 (20...Nf5 21.Qc2 g6 22.Rf2=) 21.Qc2 (21.Qa4 Ra8+=) 21...Rfd8 22.Rcf1 (22.Qa4 Nc8=) 22...Ng6 23.Qc3 (23.Rg3 Kh8=) 23...f6 24.R3f2 Qe4 25.Rc1 b6 26.Rc2?? (26.a4 Ne5 27.Rf4 Qd5=) 26...Bf7 (26...Rd3 27.Qb2 Bc4 28.Bd3 Rd3 29.Rc1–+) 27.a4?? (better is 27.Rc1=) 27...Rd3!–+ 28.Bf3 (28.Bd3 Rd3 Decoy) 28…Rc3 (28...Rc3 29.Be4 Rc4 30.Rc4 Bc4–+) 0–1. Struck,Bernd Dieter (1980) – Schmitzer,Horst (2225), GER–ch, 2000.

6.f4 Nbd7

7.cd5 ed5 8.Nf3 0–0 9.Be2 =+.

7.cd5 ed5 8.Nf3 b6 9.Be2 Bb7 (9...0–0 10.0–0=+) 10.0–0 (10.Nh4 0–0=) 10...0–0 11.a4 (11.Nh4 Bc7=) 11...Re8 12.Qb3 (12.Nh4 a6=) 12...Rc8 (12...Bf4 13.Qd3–/+) 13.Nc3 (13.Nh4 c4 14.Qc2 c3 15.dc3 Bc5=+) 13...c4 (13...d4 A) 14.ed4? cd4 (14...Bf4?! 15.Bc4 Re7 16.Ne2=) 15.Bc4 dc3 16.Bf7 Kh8 17.Bc3 Re7–+; B) 14.Nd1=+) 14.Qc2= Nc5 15.Nd4 Bf8 (15...Ra8=) 16.Rf3 (16.Rac1 Be7=) 16...Nce4 (16...Nb3!? 17.Nb3 cb3 18.Qb3 d4–/+) 17.Rh3= Rc7 (17...Bb4 18.Ne4 Ne4 19.Bg4 Bd2 A) < 20.Bc8 Bc8 (20...Qc8?! 21.Rd1=) 21.f5 Qg5–/+; B) 20.Bf5=) 18.Rf3 (18.Ne4 Ne4 (< 18...Re4 19.Bf3+/–) 19.Bg4 Bb4=) 18...Bc5 (18...Bb4 19.Rc1=+) 19.Ne4= Ne4 20.Nf5 (20.Rd1 a6=) 20...Bf8 (20...c3 21.Bc3 Bb4 22.Bd3–/+) 21.Nd4 Bc8 22.Rff1 Bb7 23.Bc3 Qd7 24.Nf3 (24.Bf3 Nc3 25.Qc3 Bc5=+) ½–½. Gross,Wilhelm – Merten,Rainer, xxv, 1994.

7.Nf3 b6 8.Be2= a6 9.Na3 =.

7.Nf3 b6 8.Be2= Bb7 9.0–0 0–0 10.Qc2 (10.Ne5 dc4 11.Nc4 Be7=) 10...Rc8 (10...a6 11.ba6 Ba6 12.Na3=) 11.d3 (11.Ne5 dc4 12.Nc4 Be7=) 11...Ng4 (11...Qc7 12.Nbd2=+) 12.Qd2= Re8 (12...Qc7 13.a4=) 13.h3 (13.Ng5 Ngf6=) 13...Ngf6 14.Nc3 (14.Ne5 Qc7 15.Nd7 Nd7=) 14...Bb8 (14...Qc7 15.g3=+) 15.Rf2 e5 (15...Nf8 16.Rd1=) 16.cd5 ef4 (16...Bd5 17.Nd5 Nd5 18.fe5 Ne5 19.e4=) 17.e4 c4 (17...Ne5=) 18.Nd4 (better is 18.dc4!? Bd6 19.Rd1+/–) 18...Nc5=+ 19.Nc6 (19.Rd1 cd3 20.Bd3 Nfe4 21.Ne4 Ne4 22.Be4 Re4=+) 19...Bc6 20.bc6 cd3 (20...Be5 21.Rf3=+ (21.dc4? Nfe4 22.Ne4 Ne4–+)) 21.Bd3–/+ Nfe4 (21...Nd3 22.Qd3 Rc6 23.Rd1–/+) 22.Ne4=+ Ne4 23.Be4 Re4 24.Qc2? (better is 24.Qd3 f5 25.Rd1=+) 24...Qd5–+ (25.Rd2 Rc4–+ (25...Qc6?? 26.Qc6 Ree8 27.Qd7+–)) 0–1. Gross,Wilhelm – Merten,Rainer, xxv/22, 1994.

7.Nf3 Qc7 8.cd5 ed5 9.Be2 0–0 10.0–0 b6 11.Nc3 d4 12.ed4 cd4 (12...Bf4 13.dc5 Qc5 14.d4=) 13.Na4 (13.Nd4!? Bf4 14.Bf3 Bh2 15.Kh1+=) 13...Bf4= 14.Rc1 Qd6 15.Nd4 (15.Rc6 Qb8 16.Bd4 Bb7=) 15...Bb7 (15...Bh2!? 16.Kh1 Ne4–/+) 16.Nf5= Bh2 17.Kh1 Qb8 18.Bf3 Bf3 19.Qf3 Be5 (19...a6!? 20.Qe3 Kh8+/–) 20.Ne7+– Kh8 21.Nc6 Qd6 22.d4 (22.Ne5?! Ne5 23.Qf4 Rae8+=) 22...Bh2 23.Ba3 Qg3 24.Qg3 Bg3 25.Bf8 Nf8 26.Ne5 (26.Nb2!?+–) 26...Kg8+/– 27.Rf3 Bh4 (27...Be5!? 28.de5 Ng4+=) 28.Rfc3 Rd8 29.Nc6 Rd7 30.g3 Bg5 31.R1c2 Nd5 32.Rf3 f6 (32...Ne6 33.Rd3+/–) 33.Nc3 Ne3 (33...f5!?+/–) 34.Re2+– Nc4 35.Ne4 h6 36.Rc3 Na5 (36...Nd6 37.Nd6 Rd6 38.Ra3+–) 37.Ng5 hg5 38.Re7 Re7 39.Ne7 Kf7 40.Rc7 Ke6 41.Ra7 g6 (41...Nc4+–) 42.d5 Kd6 43.Nc8 Kc5 (43...Kd5 44.Rf7 Ne6 45.Nb6 Kd4 46.Ra7+–) 44.Rf7 1–0. Jaramillo,Carlos O (1915) – Hernandez,Cristian A (2150), Dosquebrad COL Open, 2013.

7.Nf3 0–0

8.Qc2 a6 9.ba6 ba6 10.Bd3 =+.

8.Qc2 b6 9.Bd3 Bb7 10.0–0 dc4 11.Bc4 Qe7 12.Nc3 =.

8.Qc2 b6 9.Bd3 Bb7 10.0–0 h6 11.Nc3 Rb8 (11...a6 12.a4=) 12.Ne2 (12.Rac1 Ra8=) 12...Ne4 (12...dc4 13.Bc4 Ra8 14.Qc3=) 13.Ne5 Be5 (13...Ne5 14.fe5 Bc7 15.Nf4=) 14.fe5 Qg5 (14...Qc7 15.cd5 ed5 16.Nf4+=) 15.cd5 (15.Nf4 A) 15...Ne5 16.h4 Qf6 17.Nd5 Qh4 18.Be5 (< 18.Be4 Ng4 19.Rf4 ed5 20.cd5 Rbe8=) 18...ed5 19.Bb8 Rb8 20.Rf4+=; B) 15...Rbe8+=) 15...ed5= 16.Be4 de4 17.Ng3 Rbe8 (17...Qg6 18.Rf5=) 18.Rf5 Qg6 19.Raf1 Qe6 (19...a6=) 20.Nh5 (20.Ne4!? Be4 21.Qe4 Qa2 22.Qc2=) 20...Bd5 (20...a6=+) 21.Qc3 (better is 21.Ng3!?=+) 21...Ba2 (better is 21...Bc4 22.Rf6 gf6 (22...Nf6?! 23.ef6 g5 24.Ng7–/+) 23.Nf6 Kg7 24.Nd7 Bf1 25.Kf1 Rd8 26.Nf8 Kf8–+ (26...Rf8?! 27.Qc2–/+)) 22.Ng7? (better is 22.Ng3 Bc4 23.Ra1–/+) 22...Kg7–+ 23.R1f4 Kg6?? (better is 23...Bb1–+) 24.Rf6–/+ Nf6 25.Rf6 Kh7 26.Re6=+ fe6 27.Qa3= Bc4 28.Qa7 Kh8 29.Qb6?? Rf1# 0–1. Tonn,Waldemar – Starck,Erhard, corr DDR–ch H157, 1973.

8.Bd3 dc4 9.Bc4 Nb6 10.Be2 =+.

8.Bd3 Qe7 9.0–0 b6 10.Nc3 (10.Ne5 a6=) 10...Bb7 (10...a6 11.Qe2=) 11.Ne2 (11.cd5 ed5 12.Nh4 g6=) 11...Rad8 (11...a6 12.Nc3=+) 12.Qc2 (12.cd5 Nd5 13.Qc2 N7f6=) 12...e5 (Black gets deadly initiative) 13.fe5 Ne5 14.Ne5 (14.cd5 Bd5 15.Ne5 Be5 16.Be5 Qe5=) 14...Be5 15.Rf5 (15.Be5 Qe5 16.Nf4 Rfe8=) 15...Bb2=+ 16.Qb2 dc4 (better is 16...Ng4 17.cd5 Bd5=+) 17.Re5?? (better is 17.Bc4 Qe4 18.Rg5=) 17...Qd6–+ 18.Bc4 Ng4 (19.Rh5 Qd2 20.Qd2 Rd2–+; 18...Qd2?! 19.Qc3–+) 0–1. Wiley,Randall – Mastin,Olin E Jr, corr, 1987.

8.Bd3 Qe7 9.0–0 e5 10.fe5 Ne5 11.Ne5 Be5 12.Qc2 =+.

8.Be2 a6 9.Na3 =.

8.Be2 b6 9.0–0= Bb7 (9...a6 10.Na3=) 10.d4 (10.Ne5 dc4 11.Nc4 Be7=) 10...Ne4 (10...Qc7 11.Na3=) 11.Nbd2 Ndf6 12.Ne4 Ne4 13.Bd3 (13.Nd2 Nf6=) 13...Rc8 (better is 13...a6=) 14.Nd2? (better is 14.Rc1!?=) 14...Nd2–/+ 15.Qd2 cd4 16.Qc2 (16.Bd4 dc4 17.Bb1 f5–/+) 16...dc4 (better is 16...de3 17.Bh7 Kh8–+) 17.Bh7= Kh8 (Black launches an attack) 18.Be4 (18.Bd4!? Bc5 19.Rad1–/+) 18...Be4–/+ 19.Qe4 c3 20.Rf3 (20.Bc1 de3 21.Rf3 Kg8–/+) 20...Kg8 (20...cb2?? 21.Rh3 Qh4 22.Rh4 Kg8 23.Qh7) 21.Rh3 (21.Bc1 Bc5 22.Rh3 Re8 23.Qh7 Kf8 24.Qh8 Ke7 25.Qh4 Kd7–+) 21...f5 22.Qe6 Rf7 23.Bc1 d3 24.Rh5 (better is 24.Qg6–+) 24...d2 25.Bd2 cd2 26.Rf5 (26.Rd1 Rc1 27.Qb3 Bf4 28.Rh3 Be3 29.Re3–+) 26...Rc1 27.Kf2 Qh4 (27...Ra1?? 28.Qf7 Kh7 29.Rh5) 28.Kf3 d1Q (28...Ra1?? 29.Qf7 Kh7 30.Rh5 Qh5 31.Qh5 Kg8 32.Qd5 Kh8 33.Qd2+–) 29.Ke4 Qe7 (30.Rd5 Qe6 31.Re5 Qdd5#) 0–1. Gross,Wilhelm – Merten,Rainer, xxvi/12, 1995.

8.Be2 Nb6 =.

6.Bf6 Qf6

7.Nc3 dc4 8.Ne4 Qe5 9.Qb1 =.

7.Nc3 d4 8.Ne4 Qe7 9.Nd6 Qd6 10.ed4 cd4 11.Qg4 (11.Nf3 0–0=) 11...0–0=+ 12.Bd3 (12.Nf3 e5 13.Qe4 Nd7=+) 12...Nd7 (12...e5 13.Qg3=+) 13.Qh3 Nf6 (Black gets the initiative) 14.Nf3 e5 15.Bf5 (15.Qh4!? Re8 16.Be4–/+) 15...e4–+ 16.Nh4 g6 17.Bc8 Rac8 18.Rc1 Nd5 19.Qg3 (19.g3 Nb4 20.0–0 Nd3–+) 19...Qg3 20.fg3 (20.hg3 Nb4 21.0–0 f5–+ (< 21...Na2 22.Ra1 Nb4 23.Ra7–/+)) 20...Nb4 21.0–0 (21.Ke2 f5 (21...Na2?! 22.Ra1 Nb4 23.Ra7–/+) 22.Rhf1 d3 (22...Na2?! 23.Ra1 Nb4 24.Ra7–+) 23.Kd1 Nc2–+) 21...Nd3 (21...Na2?! 22.Ra1 Nb4 23.Ra7–/+) 22.Rc2 Rc5 (23.Kh1 Rfc8–+) 0–1. Gretencord,Ulrich – Kaupp,Wolfgang, DESC, 2001.

7.Nc3 Be5 8.Rc1 Bc3 9.dc3 dc4 10.Bc4 0–0 (10...Nd7 11.Qd6=) 11.Qh5+= Nd7 12.Nf3 b6 (12...a6 13.ba6 b6 14.Bb5=) 13.0–0 (13.Bd3 g6 14.Qh6 Bb7=) 13...Bb7= 14.Be2 Rfd8 15.Rfd1 Nf8 16.Ne5 Rd1 (16...Be4 17.f4=) 17.Rd1 Bd5 (17...g6 18.Ng4 Qc3 19.Qg5=) 18.f4 (18.c4 Be4+=) 18...g6 (18...Ba2 19.Bf3 Bd5 20.Rd5 ed5 21.Bd5+=) 19.Qg5 Qg7 (19...Kg7 20.Qf6 Kf6 21.Bc4+=) 20.Ng4 (20.Qh4 Ba2 21.Bf3 Bb3+=) 20...f5 (20...Qc3!? 21.Qf6 Qf6 22.Nf6 Kg7 23.Nd5 ed5 24.Rd5 f5=) 21.c4+/– Bb7 22.Ne5 h6 (22...Be4 23.Bd3+/–) 23.Qh4 (23.Qg3 a6 24.ba6 Ra6+=) 23...Rc8 (23...a6 24.ba6 Ra6 25.Rd2+/–) 24.Qg3 Rc7 25.Rd8 Rc8 26.Rd6 Rc7 27.Bf3 Bf3 28.Qf3 Qe7 29.Rd3 Rc8 30.h3 Qg7 31.a4 Kh7 32.Kh2 Qe7 33.Qd1 g5 34.Qh5 Qg7 35.Kh1 Kg8 36.h4 gh4 37.Qh4 Ng6 38.Ng6 Qg6 39.e4! Kh7 40.Rd7 Kh8 41.ef5 ef5 42.Ra7 Rg8 43.Qh3 (43...Re8 44.a5 ba5 45.Ra5+–) 1–0. Rohde,Friedhelm – Fritz,Harry, corr 3GMM–F, 2001.

7.Nc3 Be5 8.Rc1 d4 9.Ne4 Qe7 10.Nf3 A) 10...Bf6 A1) 11.ed4 cd4 (11...Bd4 12.Nd4 cd4 13.c5 0–0 14.Qh5 a6+=) 12.Qc2 a6 13.Nf6 Qf6 14.Qe4 0–0+=; A2) 11.Qc2 e5 (11...a6 12.ed4 cd4 13.Bd3 h6 14.0–0 0–0+=; 11...0–0 12.Nf6 Qf6 13.ed4 cd4 14.Qe4 a6=) 12.Nf6 Qf6 13.Qe4 de3 14.de3 Nd7=; A3) 11.Qe2 de3 (11...a6 12.Nf6 Qf6 13.ed4 cd4 14.Qe4 0–0+=) 12.de3 Nd7 13.Qc2 0–0 14.Rd1 Rd8=; A4) 11.Bd3 0–0 12.Nf6 Qf6 13.ed4 cd4 14.Qe2 a6+=; A5) 11.Nf6 Qf6 12.ed4 cd4 13.Qc2 0–0 14.Qe4 a6+=; B) 10...Nd7 11.Ne5 (11.ed4 Bd4 12.Nd4 cd4 13.c5 0–0 14.Qh5 Qd8=) 11...Ne5 12.ed4 cd4 13.c5 0–0 14.Qh5 Qc7+=; C) 10...Qc7 C1) 11.Qa4 C11) 11...b6 12.ed4 (12.Ne5 Qe5 13.Bd3 Bb7 14.f4=Qc7=) 12...Bd4 13.Nd4 Qe5 14.Be2 cd4+=; C12) 11...Bd7 12.Qa3 de3 13.de3 b6 14.Be2 a6+=; C13) 11...Nd7 12.b6 Qb8 13.Nc5 de3 14.de3 ab6=; C2) 11.ed4 C21) 11...cd4 12.c5 (12.Ne5 Qe5 13.Bd3 f5 14.Qh5+= g6=) 12...0–0 13.Qe2 Nd7 14.c6 bc6=; C22) 11...Bd4 12.Nd4 cd4 13.c5 0–0 14.Qh5 Nd7=; C3) 11.Ne5 Qe5 12.Bd3 0–0 13.f4 Qc7 14.ed4+= cd4=.

7.Nc3 Be5 8.Rc1 d4 9.Ne4 Qf5 10.Bd3 (worse is 10.Nc5 A) 10...Bf6 11.Nb3 (11.ed4 Bd4 12.Nd3 a6 13.Qf3 e5 14.Qf5+=; 11.Nd3 e5 12.ed4 ed4 13.Qf3 a6 14.b6+=) 11...e5+= 12.Qf3 Qd7 13.c5 Qe7 14.Bd3+/–; B) 10...Bh2 11.Nb7 (11.Ne6 Be6 12.Rh2 a6 13.Nf3 de3 14.de3+/–) 11...Bc7 12.Rh5 Qf6 13.Nc5 a6 14.Qa4+/–; C) 10...de3 11.de3 Bb2 12.Rc2 Bf6 13.Nb3 e5 14.Ne2+=) 10...0–0 11.Nc5 Qg5 (11...Qf6 12.Qf3+/– de3 13.de3 a6 14.b6+/–) 12.Nf3+– Qe7 (12...Qg2?? 13.Rg1 Qh3 14.Ne5 Qh2 15.Nf3+–) 13.Nb3 Bf6 14.ed4 (14.Nfd4 a5+–) 14...g6 (14...a6 15.Qc2 g6 16.b6+–) 15.0–0+– a6 16.a4 Nd7 (16...Qb4 17.ba6 Na6 18.a5+–) 17.a5 (17.c5 ab5 18.Bb5 Bg7+–) 17...ab5 18.cb5 Qd6 19.Re1 b6 (19...Rd8+–) 20.a6 Ra7 1–0. nordlicht – marekt, gameknot.com, 2001.

5.c4 Bd7

6.Be5 a6 =.

6.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Bd7).

6.Nf3 Ne4 7.d3 Nd6 8.Nc3 dc4 9.dc4 Qa5 10.Bd3 a6 11.Qe2 ab5 12.cb5 Nb5? (better is 12...Qc7 13.Ne5 Bc8+/–) 13.Bb5+– Bb5 14.Qb5 Qb5 15.Nb5 Na6 (15...Ra4 16.Bc3+–) 16.0–0–0 Be7 17.Ne5 0–0 18.Rd7 Bf6 19.Nc4 Bb2 (19...Nb8 20.Rb7 Ra2 21.Kb1+–) 20.Kb2 Nb4 21.a3 Nd3 (21...Nd5+–) 22.Rd3 (22...Rad8 23.Rb3+–) 1–0. orane (2095) – Strac55, Live Game Caissa's Web, 2004.

6.Nf3 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 Bd6 10.Qb3 0–0 11.Bf6 Qf6 12.cd5 ed5 13.Qd5 Qf5.

7.a4 dc4 8.Na3 ab5 (8...c3 9.Bc3 ab5 10.ab5 Be7 11.Bd3 0–0 12.Bb2 Be8 13.Qc2 g6; 8...Be7 9.Bc4 0–0 10.0–0 Bc8 11.Qc2 g6 12.g3 Nbd7 13.ba6 ba6) 9.ab5 c3 10.Bc3 Be7 11.Bd3 0–0 12.0–0 Ra3 13.Ra3 c4.

7.a4 dc4 8.Nc3 Bd6 (8...ab5 9.ab5 Ra1 10.Qa1 Bd6 11.Qa7 Bc8 12.Bc4 Nbd7 13.0–0 0–0; 8...Be7 9.Bc4 0–0 10.0–0 ab5 11.ab5 Ra1 12.Qa1 Bc8 13.Qa7 Nbd7) 9.Bc4 0–0 10.0–0 ab5 11.ab5 Ra1 12.Qa1 Bc8 13.Qa2 Re8.

7.a4 dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 Nd5 (10...Ne4 11.Qb3= (11.Bd3 Nd6 12.Qb3 Be7 13.0–0 0–0) 11...Qa5 12.Be5 Nd6 13.Bc3 Qb6; 10...Bc8 11.Bf6 Qf6 12.Nc3 Nd7 13.0–0 Qg6) 11.0–0+= Qa5 (11...Nb6 12.d3+= (12.Be2 f6 13.Nc3 Be7) 12...f6 13.Nc3 Nc4) 12.Be5+/– Qd8 (12...Nb6 13.Bd3 c4) 13.Nc3 (13.d4 f6+– (13...Nb6 14.Be2 f6 15.dc5 Bc5+/–)) 13...Nb6+= 14.Be2 f6 15.Bg3 Be7 16.d4 0–0 17.dc5 Bc5 18.Ne4 Be7 19.Qc1 (19.Qb3 Kh8+/–) 19...Qc8 (19...e5!?+=) 20.Nd6 Qc1 21.Rc1 Bd6 22.Bd6 Rd8 23.Be7 Rc8 24.Ra1 (better is 24.Rc8 Bc8 25.Bd6+=) 24...Nd5+= 25.Bd6 Nc3 26.Bf1 Nb5 27.Bb5 Bb5 28.h4 (28.Nd4 Bd7+=) 28...Na6 29.Rb1 (29.Nd4 Bd3–/+) 29...Bc6 30.Nd4 Be4 31.Rb2 e5 32.Nb5 Rc1 33.Kh2 Rc2 34.Rc2 Bc2 35.f4 Bd3 36.Nc3 ef4 37.ef4 b5 38.Kg3 (38.Na2 Kf7–/+) 38...b4–+ 39.Nd5 b3 40.Kf3? (better is 40.Ba3–+) 40...b2 41.Nc3 Kf7 42.g4 g6 43.g5 fg5 44.fg5 Ke6 (44...Ke6 45.Ba3 b1Q 46.Nb1 Bb1–+) 0–1. Lagvilava,Genrieta (2325) – Ingolfsdottir,Harpa (2005), EuTChw, Leon ESP, 2001.

7.a4 dc4 8.Bc4 Bd6 9.0–0 =.

7.a4 Bd6 8.Na3 0–0 (8...ab5 9.Nb5 Be7 10.Bd3 0–0 11.0–0 Nc6 12.Ne5 Ne5 13.Be5 Bb5) 9.Bd3 ab5 10.ab5 h6 11.Qb3 Be8 12.0–0 Nbd7 13.Nc2 Ra1.

7.a4 Bd6 8.Nc3 0–0 (8...ab5 9.ab5 Ra1 10.Qa1 0–0 11.Qa7 Bc8 12.Qa2 d4 13.ed4 cd4; 8...Qa5 9.Bd3 dc4 10.Bc4 Qb4 11.Qb3 Qb3 12.Bb3 ab5 13.Nb5 Bb5) 9.Bd3 Be8 10.0–0 Nbd7 11.ba6 ba6 12.Qc2 Ne5 13.Ne5 Be5.

7.a4 Bd6 8.d4 ab5 (8...0–0 9.Nbd2 Qe7 10.dc5 Bc5 11.Bd3 Rc8 12.0–0 dc4 13.Bc4 ab5) 9.ab5 Ra1 10.Ba1 0–0 11.Bd3 cd4 12.Bd4 dc4 13.Bc4 Qa5.

7.a4 Bd6 8.Bf6 Qf6 9.Nc3 0–0 (9...ab5 10.ab5 Ra1 11.Qa1=) 10.cd5 ab5 11.Ne4 Qe7 12.de6 Be6 13.Nd6 Qd6 14.ab5 Nd7 15.Be2 Bd5 (15...Nb6 16.0–0+=) 16.0–0 Qg6 17.Qb1 Ra1 18.Qa1 b6 19.d4 Ra8 20.Qc3 c4 The passed pawn on d4 quickly leads to threats 21.Rc1 Nf6 22.Qe1 Rc8 23.Qf1 White launches an attack 23...c3 24.Ne5 Qg5 25.f4 Qh4 (25...Qf5!?+/–) 26.g3 Qh6 27.Nc6 (27.Bf3 Rc7+–) 27...Bc6+/– 28.bc6 Rc6 29.Qf3 Ne8 30.d5 Rc7 (30...Rc5 31.e4+/–) 31.e4+– b5 32.Rc3 b4 33.Rb3 Qb6 34.Qf2 Rc1 35.Kg2 Qa5 (35...Qd6 36.Bf3+–) 36.Rb2 (36.Qd4 Rc2 37.Kf3 Qa2 38.Rb4 Re2+–) 36...Qa3+/– 37.Qd4 b3 38.Qd2 Ra1 39.Bc4 Qc5 40.Bb3 Qg1 41.Kh3 Ra6 42.e5 Qf1 43.Kg4 Rg6 44.Kf5 Rh6 45.Bd1 Qh1 46.d6 (46.d6 Qc6 47.Qd4+–) 1–0. Woelfelschneider,Peter – Stubbe, 2010.

7.a4 Be7 8.Nc3 0–0 (8...ab5 9.ab5 Ra1 10.Qa1 Bc8 11.Bd3 dc4 12.Bc4 Nbd7 13.0–0 0–0; 8...Qa5 9.Be2 Bd6 10.0–0 0–0 11.Qc2 h6 12.Qd3 Qb4 13.cd5 ed5; 8...Qb6 9.Bd3 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Qa1 0–0 13.0–0 Be8; 8...h6 9.Bd3 0–0 10.0–0 ab5 11.ab5 Ra1 12.Qa1 dc4 13.Bc4 Bc8) 9.Bd3 Qa5 10.0–0 Bd6 11.Qc2 dc4 12.Bc4 Qb4 13.Ne4 Ne4.

7.Qa4 Bd6 A) 8.Be2 0–0 (8...dc4 9.Bc4 Nd5 10.Nc3 Nb6 11.Qb3 Nc4 12.Qc4 ab5 13.Nb5 Bb5) 9.0–0 dc4 10.Na3 Nd5 11.Bc4 Nc7 12.Qb3 ab5 13.Nb5 Nb5; B) 8.Bd3 0–0 (8...dc4 9.Bc4 0–0 10.Bd3 Be8 11.Bf6 Qf6 12.Nc3 c4 13.Bc4 Nd7) 9.Bf6 Qf6 10.Nc3 dc4 11.Bc4 Qg6 12.Be2 Qg2 13.Rg1 Qh3.

7.Nc3 ab5 8.Nb5 Bb5 9.cb5 c4 =.

5.c4 Be7

6.Nc3 b6 7.Rc1 Bb7 8.Nf3 Ng4 (8...0–0!?=) 9.Be2 Bf6 10.Qc2 (10.d4 dc4 11.dc5 bc5 12.Qd8 Kd8+=) 10...0–0 (10...dc4 11.e4=) 11.0–0 Qc7 (11...dc4 12.e4=) 12.h3 Ne5 13.Ne5 Be5 14.f4 Bf6 15.Bd3 g6? (15...h6 16.cd5 ed5 17.Bh7 Kh8 18.Qd3=) 16.Nd1?? (better is 16.Nd5 ed5 17.Bf6+–) 16...d4= 17.Nf2 Rd8 18.Ng4 Bg7 19.Nf2 Qe7 20.Ne4 Qh4 21.Kh2 Nd7 22.Nd6+= Rab8 23.ed4 cd4 24.Be4 Bc8 25.Qd3?? Nc5–+ (26.Qa3 Rd6 27.Qa7 Ne4 28.Qb8 Qd8–/+) 0–1. Meybohm,Dirk – John,F, 1988.

6.d4 0–0 7.Nf3 Bd7 8.Nc3 cd4 9.Nd4 dc4 10.Bc4 Qc7 11.Bd3 Bb4 12.Rc1 Nd5 13.Nde2 Qb6 14.0–0 Bc3 15.Nc3 (15.Bc3?! Bb5 16.Bd4 Qa6 17.Bb5 Qb5=) 15...Nc3 16.Rc3 a6 17.Ba3 Rd8 18.Bd6! Qa5 (18...Qd6 19.Bh7) 19.Bh7! Kh7 20.Qc2 Kg8 21.Bc7 Qb5 22.Bd8 Nc6 23.Rc5 Nb4 24.Rb5 Nc2 25.Rb7 Bb5 26.Rd1 Nb4 27.a3 Nd5 28.Ba5 Rc8 29.h3 g6 30.Kh2 Rc2 31.e4 Nf4 32.Rd2 Rc4 33.f3 Rc8 34.Bb4 Nh5 35.g4 Nf4 36.Bd6 Nd3 (36...g5 37.h4+–) 37.Rb5! ab5 38.Rd3 f6 39.Bb4 g5 40.Rd7 1–0. Scholbach,Tillmann (2060) – Cardianus,Eric (1910), internet, 1998.

6.d4 b6 7.dc5 bc5 8.Nf3 0–0 9.Nc3 Bb7 10.Bd3 Nbd7 11.cd5 ed5 12.0–0 Re8 13.a4 a5 (13...Rc8 14.a5=) 14.ba6+= Ba6 (14...Bc6 15.Bb5 Qc7 16.Rb1+=) 15.Ba6+/– Ra6 16.Nd5 Nd5 17.Qd5 Nf6 (17...Nb6 18.Qh5+/–) 18.Qc4 Qc7 1–0. woschkat (2395) – chessmaniac (1695), net–chess.com, 2003.

6.cd5 Qd5 7.Nc3 (7.Nf3 0–0=) 7...Qd6 8.Bc4 (8.Nf3 e5=) 8...0–0 9.Nf3 a6 (9...Nbd7 10.d4=) 10.a4 Rd8 11.0–0 b6 12.d4 (12.a5 ba5 13.Ra5 Qb6=) 12...Bb7 (12...cd4 13.Nd4 (13.Qd4? Qb4 14.Qb6 Qb2–+) 13...Qc7 14.Qe2=) 13.dc5 (13.Qe2 Nbd7=) 13...Qc5 14.Qb3 (14.Qe2!?=) 14...Bf3–/+ 15.gf3 Qh5 (15...Qg5 16.Kh1–/+) 16.Ne4 (better is 16.ba6!? Qf3 17.Be2=+) 16...Ne4–+ 17.fe4 Qg6 18.Kh1 Qe4 19.f3 Qh4 20.Rg1 (20.Rad1 Rd1 21.Rd1 ab5 22.Bb5 Bf6–/+) 20...Bf6 21.Rg4 Qh6 22.Rag1=+ Bb2 23.Qb2 g6 24.Qf6 Rd2 25.Rh4=+ Qe3 26.Rf4? Ra7–+ 27.Rh4 Rad7?? 28.Rg6!+/– Kf8 29.Rg1?? Rd1+– 30.Bf1 Qf2?? 31.Rh7+– Qd4 32.Rh8 1–0. gtate (2020) – eddieteijeiro (2075), net–chess.com, 2006.

6.a4 0–0

7.Nf3 a6 8.Nc3 Re8 9.d4 cd4 10.Qd4 ab5 11.cb5 Nbd7 12.Bd3? e5–+ 13.Qh4 e4 14.Ng5?! ed3 15.Nd5 d2! 16.Ke2 Nf8 17.Ne7 Qe7 18.Ba3? Bg4 19.Qg4 Ng4 20.Be7 Re7 21.Rhd1 Ng6 22.Rd2 h6 23.Nf3=+ N4e5 24.Nd4 Nc4 25.Rc2=+ Na5 26.Rac1 Kf8 27.g3 Rd8 28.Rc8 Red7 29.f4 Ne7–/+ 30.Rd8 Rd8 31.g4 Nd5 32.Kf3 Nb6 33.h4 Rc8 34.Rc8–/+ Nc8 35.g5 h5 36.f5 Nb6–+ 37.e4 Na4 38.e5 Nc5 39.g6? Nc4 40.Kf4 f6 41.ef6–/+ gf6 42.Ne2 Nd6 43.Ng3 Nb5 44.Nh5 Nd7 45.Ke4? Nd6–+ 46.Kf4 b5 47.Ng3 b4 48.Ke3 b3 49.Kd2 Nc5 50.Nh5 Nde4 51.Kd1 Nd3 52.Nf6 Nf6 53.Kd2 b2 54.Kc2 Kg7 (55.h5 Nd5–+) 0–1. Durka,Jan – Veselsky,Jozef, Tirnavia–B Trnava, 1979.

7.Nf3 Nbd7 8.Qc2 (8.Be2 Bd6=) 8...Qc7 (8...a6 9.Be2=+) 9.g3 (9.Bd3 dc4 10.Bc4 Bd6=) 9...e5 (9...dc4 10.Bc4 b6 11.Nc3=+) 10.cd5 Nd5 11.Bc4 (11.Qe4 Nb4 12.Ne5 Nf6=+) 11...Nb4 12.Qc3 Bf6 13.e4 Nb6 14.d3? (better is 14.Be2!?=+) 14...Nc4–+ 15.dc4 Rd8 16.Ke2 (16.Ra3–+) 16...Rd3 17.Qc1 (17.Qd3 Nd3 18.Kd3 Qd6 19.Ke2–+) 17...Bg4 18.Nbd2 Rad8 (better is 18...Bg5 19.Rd1 Rad8 20.Be5 Qe5 21.Kf1 Bf3 22.Nf3 Rf3 23.Rd8 Bd8 24.Kg1–+) 19.Rd1 (19.Kf1 Bf3 20.Nf3 Rf3–+) 19...Bf3 (better is 19...Bg5! 20.Be5 Qe5–+) 20.Nf3 Rd1 21.Qd1 Rd1 22.Rd1 Nc2 23.Rd5 (23.Ne5 Qa5–+) 23...Nd4 24.Ke3 (24.Bd4 cd4 25.c5 g5–+) 24...h6 (better is 24...Qa5 25.Bd4 cd4 26.Ke2 Qc3 27.Ne5 h6–+) 25.Ne1 (25.Bc3–+) 25...Qa5 26.Nd3 Qa4 27.Rc5 Qc2 (27...Qd1 28.Re5 Nc2 29.Kf4 Be5 30.Be5 g5 31.Kf5 Qd3 32.Bd6 Qd6 33.e5 Qd3 34.Kg4 Qe2 35.Kh3 h5 36.Kg2 Ne3 37.Kh3 Qg4) 28.Ne5 Qb2 (29.Rc8 Kh7 30.Rh8 Kh8 31.Nf7 Kg8–+; 28...Qe2 29.Kd4 Qd2#) 0–1. Hionidis,N – Papantoniou,D, Athens, 1947.

6.a4 b6

7.d3 0–0 8.Be2 +=.

7.d3 dc4 8.Qf3= Qd5 9.dc4 Qf3 10.Nf3 Bb7 11.Be2 (11.a5 ba5 12.Ra5 0–0=) 11...0–0 (11...a6 12.Nc3=) 12.Nbd2 (12.a5 ba5 13.Ra5 a6=) 12...Nbd7 13.0–0 Rad8 (13...a6 14.Rfd1=) 14.a5+= Ne4 15.Ne4 Be4 16.ab6 ab6 17.Ra7 Bf3 18.gf3 (18.Bf3 Bf6 19.Bf6 Nf6+/–) 18...Bf6 19.Ba1 Ne5 (19...Ba1 20.Rfa1 Nb8 21.f4+=) 20.f4+/– Nd3 (20...Ng6 21.Bf6 gf6 22.Rfa1+/–) 21.Bf6 gf6 22.Rd1 (22.Rb7 Rd6+/–) 22...Nb2 23.Rb1 Nd3 (23...Rd2 24.Kf1+/–) 24.Ra6 (24.Rb7 Rd6+/–) 24...Nb4 (24...Rd6 25.Bd3 Rd3 26.Rb6 Rc3+–) 25.Rb6+– Rd2 26.Bh5 Rc2 27.Rd1 Rc4 28.Rd7 e5 29.Rbb7 ef4 (29...Kg7 30.Bf7 Rf7 31.Rf7 Kg6 32.fe5 fe5 33.Rh7 Nd3+–) 30.Bf7 Rf7 31.Rf7 f3 (31...fe3 32.Rfd7 Rg4 33.Kf1+–) 32.h3 (32.h3 Re4 33.Rg7 Kh8 34.Rh7 Kg8 35.Rhc7+–) 1–0. Cirulis,Ilmars (1675) – Vollmer,Steve, FICGS, 2014.

7.Nf3 Nbd7 8.Nc3 A) 8...0–0 9.cd5 (9.Be2 dc4 10.Bc4 Bb7 11.d3 Bf3 12.Qf3 Ne5 13.Qb7 Ne8 14.Ne4 Nd6=) 9...ed5 10.Be2 Re8 11.0–0 a6 12.Qc2 Nf8 13.ba6 Ba6 14.Nb5 Ne6=; B) 8...a6 9.Be2 (9.d4 0–0 10.dc5 Nc5 11.cd5 ed5 12.ba6 Ba6 13.Ba6 Ra6 14.0–0 Qd7=) 9...dc4 10.Bc4 Bb7 11.d3 Bf3 12.Qf3 Ne5 13.Qb7 0–0 14.Rd1 Bd6=.

7.Nf3 Nbd7 8.Bd3 A) 8...0–0 9.0–0 (9.cd5 ed5 10.0–0 Re8 11.Nc3 Bd6 12.Bc2 Ne5 13.Ne5 Be5 14.d4 cd4=) 9...Bb7 10.Qe2 dc4 11.Bc4 Bd6 12.d3 Re8 13.e4 Nd5 14.Rd1 Nf4=; B) 8...a6 9.0–0 (9.Nc3 ab5 10.ab5 Ra1 11.Ba1 0–0 12.0–0 dc4 13.Bc4 Bb7 14.d4 Qa8=) 9...0–0 10.Nc3 dc4 11.Bc4 Bb7 12.d3 Ra7 13.ba6 Bf3 14.gf3 Nb8=.

7.Nf3 Nbd7 8.d4 A) 8...Bb7 9.cd5 (9.Nc3 0–0 10.Rc1 Ne4 11.Be2 cd4 12.Nd4 Nc3 13.Bc3 Rc8 14.Nc6 Bc6–/+) 9...Bd5 10.Nc3 0–0 11.Nd5 Nd5 12.Bc4 cd4 13.Bd5 ed5 14.Nd4 Ne5+=; B) 8...0–0 9.cd5 (9.Bd3 dc4 10.Bc4 Bb7 11.0–0 Rc8 12.Nbd2 cd4 13.Nd4 Ne5 14.Ne6 Qd2=) 9...Nd5 10.e4 Nb4 11.Nbd2 Bb7 12.Be2 f5 13.ef5 Rf5 14.0–0 Rc8=.

7.Nf3 Nbd7 8.cd5 A) 8...Nd5 9.Bg7 (9.Bc4 0–0 10.e4 Nf4 11.0–0 Bb7 12.Qc2 Bf6 13.Re1 Bb2 14.Qb2 Nf6=) 9...Rg8 10.Bb2 Bb7 11.Na3 a6 12.ba6 Ba6 13.Nb5 Bb7 14.Rc1 N7f6+/–; B) 8...ed5 9.Be2 (9.Bd3 0–0 10.0–0 Re8 11.Nc3 Bd6 12.Bc2 Ne5 13.Ne5 Be5 14.d4 cd4=) 9...0–0 10.0–0 Re8 11.Nc3 a6 12.Qc2 Nf8 13.ba6 Ba6 14.d3 Ng6=.

7.Nf3 Nbd7 8.Be2 Bb7 (8...0–0 9.cd5 (9.0–0 Bb7 10.cd5 Nd5 11.Nc3 Bf6 12.Qb1 Nb4 13.d4 cd4 14.Nd4 Bd4=) 9...ed5 10.0–0 Re8 11.Nc3 a6 12.Qc2 Nf8 13.ba6 Ba6 14.d3 Ng6=; 8...dc4 9.0–0 (9.Bc4 Bb7 10.0–0 0–0 11.d3 Bd6 12.Nbd2 a6 13.ba6 Ba6 14.Qb3 Qe7=) 9...0–0 10.Bc4 Bb7 11.d3 Bd6 12.Nbd2 a6 13.ba6 Ba6 14.Qb3 Qe7=) 9.0–0 (9.cd5 Nd5 10.a5 ba5 11.Qa4 a6 12.Qa5 ab5 13.Qd8 Kd8 14.Ra8 Ba8=) 9...Qc7 (9...0–0 10.cd5 Nd5 11.Nc3 Bf6 12.Qb1 Nb4 13.d4 cd4 14.Nd4 Bd4=) 10.a5 (10.cd5 Bd5 11.Nc3 Bb7 12.a5 Bd6 13.Qa4 Bf3 14.Bf3 Rd8+=) 10...Rd8 (10...dc4 11.Bc4 ba5 12.Bc3 Ng4 13.g3 0–0 14.Ba5 Qd6+=) 11.cd5 ed5 12.a6 (12.d4 0–0 13.ab6 ab6 14.Qc2 c4=) 12...Ba8 13.d3 (13.Nc3 0–0 14.Rc1 Rfe8=) 13...0–0 14.Qc2 Rfe8 15.Nbd2 Bd6 16.g3 Ng4 17.Nh4 Ndf6 18.Nf5 d4 19.e4 (19.Bg4 Ng4 20.ed4 Qd7 21.Ng7 Kg7 22.dc5 Be5+=) 19...g6 20.Nd6 Qd6 21.Rae1 h5 22.Bc1 Qd7 23.Qb2 Ne5 24.f4 Neg4 25.f5 (25.Nc4!?+/–) 25...Ne3+= 26.fg6 Nf1 27.Rf1 Re6 (27...Kg7 28.gf7 Qf7 29.Nf3+=) 28.gf7+/– Qf7 29.Bd1 Qd7 30.Bb3 Nd5 31.Nf3 (worse is 31.ed5 Re2 32.Rf2 Rf2 33.Kf2 Qb5+/–) 31...Kg7 (better is 31...Rde8+–) 32.ed5 Rf6 (32...Bd5 33.Nd4! Kg8 34.Bd5 cd4 35.Bc4+–) 33.Bg5 Rdf8 34.Bf6 Rf6 35.Qc1 Rf5 36.Nh4 (36.Re1 Kh7 37.Nh4 Bd5 38.Re7 Qe7 39.Nf5 Qf6 40.Bd5 Qf5+–) 36...Re5 (36...Rf1 37.Kf1 Qf7 38.Kg1 Kh7+–) 37.Qf4 (37.Qf4 Qe8 38.d6+–) 1–0. glovio (2170) – donex7 (1805), gameknot.com, 2014.

6.cd5 ed5

7.d4 c4–/+ 8.Nc3 Bf5 9.Rc1 0–0 10.Nge2 Nbd7 (10...a6 11.Ng3 Bg6 12.h4–/+) 11.Ng3=+ Bg6 12.f4 Bd6 (12...h5 13.f5 Bh7 14.Nh5 Bf5 15.Be2=+) 13.Qf3 Qe7 (13...Qe8 14.f5 Bg3 15.hg3 Bf5 16.Qf5 Qe3 17.Be2=) 14.f5= Bg3 15.hg3 Bh5 (15...Bf5 16.Qf5 Qe3 17.Be2=) 16.Rh5+= Nh5 17.Nd5 (< 17.Qh5 Qe3 18.Ne2 a6–/+) 17...Qg5 18.Bc4 Ng3 (18...Rfe8 19.Kf2 Ndf6 20.b6=) 19.Ba3+/– Rfe8 20.Be7 Re7 (20...Qe7 21.Ne7) 21.Ne7 Kf8 22.Nd5 Nf5 23.Nc7 Rd8 24.Be6 Qh4 25.Kd1 Nd6 26.Nd5 (26.Bd5 Nf6+=) 26...Kg8 (26...Qh1 27.Kd2 Qh6 28.Bh3=) 27.Bh3 (27.Qg4!? Qf2 28.Bd7+=) 27...Nf8= (27...Nb5 28.Bd7 Nd4 29.ed4 Qd4 30.Ke1 Qe5 31.Kf1+–) 28.a4 (28.Rc7 Re8=) 28...Ne6 (28...Ng6 29.Rc7+=) 29.Be6+= fe6 30.Nf4 e5 31.Ne6 (31.de5? Qh1 32.Ke2 Qc1 33.ed6 Qc2 34.Kf1 Rd6–+) 31...Re8 32.g3 Qh2 (32...Qh3 A) < 33.de5 Qe6 (33...Re6?! 34.ed6 Rd6 35.Ke1=) 34.ed6 Qd6 35.Ke2 Rd8–+; B) 33.Ng5 Qd7 34.Qd5 Kh8 35.Qd6+/–) 33.Qd5 (33.de5? Re6 34.Rc5 Qa2–+) 33...Qg1 34.Kc2 ½–½. Heyn – Kjaerstad, corr 3GMM–02, 1996.

7.Nf3 0–0 8.Be2 a6 9.0–0 ab5 10.Bb5 Bg4 11.h3 Bh5 12.d3 Qa5 (12...Na6 13.Nbd2=+) 13.a4= Nc6 14.Bc3 (14.Bc6 bc6 15.Nbd2 Rfb8=) 14...Qc7 15.Nbd2 d4 16.ed4 Nd4 17.Bd4 cd4 18.Rc1 Qb6 19.Qb3 Rac8 20.Nc4 Qd8 (20...Qc5 21.Nfe5=) 21.Nfe5 Nd5 22.a5 (22.Nd7 Nf4 23.Ra1 Be2=) 22...Nc3=+ 23.Ra1 Nb5 (23...Qd5!? 24.Ba4 Ne2 25.Kh1 Rc7=) 24.Qb5= Rc7 25.a6 ba6 26.Ra6 Rc5 27.Qa4 Re8 28.Nd7 Rg5 29.Ra1 Bf3+= 30.g3 Qc7? 31.Nf6!+– gf6 32.Qe8 Kg7 33.Ra7?? Rg3 34.fg3 Qg3 (35.Kf1 Qg2 36.Ke1 Qe2) 0–1. gtate (1900) – amikhlin (2400), net–chess.com, 2004.

7.Nf3 Nbd7 8.Be2 0–0 9.0–0 b6 10.d4 (10.Nc3 a6=) 10...Bb7 (10...c4 11.Qa4=) 11.Nbd2 (11.dc5 bc5 12.Nc3 Bd6=) 11...Rc8 (11...c4 12.Qc2=) 12.dc5 Bc5 (12...bc5 13.Qc2=) 13.Ne5 (13.Rc1!?+=) 13...Ne5= 14.Be5 Bd6 (14...d4!? 15.ed4 Bd4 16.Bd4 Qd4=+) 15.Bd6+= Qd6 16.Bf3 (16.Re1 Rc7=) 16...Qd7 (16...Qb4 17.Rb1 Qa5 18.Rb2=) 17.a4+= Rfe8 (17...a6 18.Qe2+=) 18.h3 (18.Nb3 a5+=) 18...Rc7 19.Bg4 Ng4 20.Qg4 (White gets in control) 20...Qg4 21.hg4 Bc8 22.Rac1 Rc1 23.Rc1 Bg4 24.Rc7 Rc8 25.Ra7+/– Bd1 26.a5+– ba5?? 27.Ra5 Rb8+= 28.b6 Kf8 29.Rd5 Rb6= 30.Kf1 Bb3 (30...Bg4 31.Rd4 h5 32.g3=) ½–½. Melzig,Ernst – Ludwig,Egbert, 17 sen. Bad Sooden op, 2005.

6.Be2 dc4

7.Bc4 a6 8.Qa4 =.

7.Bc4 0–0

8.Nf3 a6 9.Nc3 =.

8.Nf3 Nbd7

9.0–0 Nb6 10.Be2 =.

9.0–0 Qc7 10.Qc2 b6 (10...Bd6 11.d3=) 11.d4 (11.d3 a6=) 11...Bb7 12.Nbd2 Rac8 (12...a6 13.a4=) 13.Bd3 (13.Rac1 cd4 14.Bd4 Bf3 15.Nf3 Ba3=) 13...cd4 14.Qc7 Rc7 15.Nd4 (15.Bd4 Nc5 16.Bc4 Rfc8=) 15...Nc5+= 16.Rac1 Rfc8 17.Bb1 Na4 (17...a5 18.N4f3+=) 18.Rc7 Rc7 19.Rc1 Rc1 20.Bc1 Bc5 (20...Nc3 21.Bb2 Nfd5 22.Bc3 Nc3 23.Nc6 Nb5 24.Ne7 Kf8 25.Nf5 ef5 26.Bf5=) 21.Ne2 Nd5 22.Ne4 (22.Bd3 Bd6=) 22...a6 (22...Be7 23.Bc2 Nc5 24.a3=) 23.Bd3 (23.Nc5 bc5 24.Bd3 Nb4+=) 23...Nb4 24.ba6 Na6 25.Bc2 (25.N2c3 Nc3 26.Nc3 Bd6=) 25...Nb4+= 26.Ba4 Be4 27.Nc3 Bd3 (27...Bg6 28.Bd2+=) 28.Bb3 (28.a3 Nc2 29.Bb5 Bb5 30.Nb5 Ne1=) 28...Kf8 (28...b5 29.a4 ba4 30.Ba4=) 29.Bb2 Ke7 30.Na4 f6 31.Nc5 (31.Ba3 Na6 32.Bc5 bc5=) 31…bc5+= ½–½. Nemeth,L – Farkas,A, (year?).

9.0–0 Qc7 10.Nc3 (10.Qc2 Bd6=) 10...Nb6 11.Be2 Rd8 12.Qc2 Nbd5 13.a3 b6 (13...Bd7 14.Rfc1=) 14.Ng5 (14.Nd5 Nd5 15.Bd3 h6=) 14...g6 (14...h6 15.Nd5 ed5 16.Nf3=) 15.Nce4 (15.Qa4 a6=) 15...Ne4 16.Ne4 e5 (16...a6 17.Nc3=) 17.Rac1 (17.Bc4 a6+=) 17...Bb7 (17...a6 18.d4 ed4 19.ed4 ab5 20.dc5=) 18.d4 (18.Nc3 a6+=) 18...ed4= 19.ed4 Rac8 (19...f5 20.Ng3=) 20.dc5+= Bc5 (20...bc5 21.Bc4+=) 21.Nc5+/– Qc5 (21...bc5 22.Bg4 f5 23.Be2+/–) 22.Qa4 Qe7 23.Bf3 (23.Rc8 Bc8 24.Qd4 f6+/–) 23...Rc1+= 24.Rc1 Re8 (24...Nc3 25.Bc3 (25.Qa7 Ne2 26.Be2 Qe2–/+) 25...Bf3 26.Qf4+–) 25.Rf1 (25.h4 Qe6+/–) 25...Ba8?? (better is 25...Qg5 26.Qd4 f6+–) 26.Qd4 (26...Qf6 27.Qf6 (27.Bd5?! Qd4 28.Bf7 Kf7 29.Bd4 Be4+=) 27...Nf6 28.Ba8 (< 28.Bf6 Bf3 29.gf3 Re6+–) 28...Ra8 29.Bf6+–; 26.Bd5 Bd5 27.Qd4 f6 28.Qd5 Qf7+–) 1–0. Martine,Jean_Marie – Adam,Gerard, 2000.

9.0–0 Qc7 10.Nc3 (10.Qc2 Rd8=) 10...b6 (10...e5 11.d3=) 11.Rc1 (11.Qe2 Bb7=) 11...Bb7 12.Be2 (12.d4 a6=) 12...Rfd8 13.d4 Rac8 14.Qb3 (14.Qa4 Bd6=) 14...Ng4 (14...Bd6 15.h3=+) 15.g3 Ngf6 (15...cd4 16.Nd4 Nc5 17.Qc2=+) 16.Rfd1 Ne4 (16...cd4 17.Ne4 Nc5 18.Nc5 bc5 19.Nd4=+) 17.Ne4 (17.d5 c4 18.Qc2 Nc3 19.Bc3 ed5=+) 17...Be4 18.Nd2 Bb7 (18...Bd5 19.Qc3=) 19.Bf3 (19.e4 Bf6=) 19...Nf6 (19...Bf3 20.Nf3 Qb7 21.d5=) 20.e4 Qb8 21.e5 (21.dc5 Rc5 22.Rc3 Rc3 23.Qc3 Bc5=) 21...Bf3 22.Qf3 Nd5 23.Ne4 (23.a4 Rd7=) 23...cd4=+ 24.Bd4 (24.Rc8 Qc8 25.Qe2 d3 26.Rd3 a6=+) 24…Rc1–/+ ½–½. Lippmann,Ulrich (2075) – Igney,Volkhard (2265), 05 sen. Europa–EM2005, 2005.

9.a4 b6 10.0–0 Bb7 11.d4 Rc8 12.Nbd2 Nd5 (12...cd4 13.Nd4 Qc7 14.Rc1=) 13.a5 (13.Re1 cd4 14.Bd4 Nc5=) 13...ba5 14.Bd5 Bd5 15.Qa4 c4 (15...f5=) 16.Bc3 (16.e4!? Bb4 17.ed5=) 16...Bb4=+ 17.Bb4 ab4 18.Qb4 c3 19.e4 Ba8 (< 19...cd2 20.ed5 ed5 21.Ra7+/– (< 21.Qd2 Qb6+=; < 21.Nd2 Qc7+=)) 20.Nc4 (20.Ra7 cd2 21.Nd2–/+) 20...Nf6 (20...Be4 21.Nd6 Qe7 22.Ne5–/+) 21.Ra7 (better is 21.Qc3!? Be4 22.Nfe5= (< 22.Ra7 Bf3 23.gf3 Nd5–/+)) 21...Be4–/+ 22.Nfe5 (better is 22.Qc3!? Bf3 23.gf3–/+) 22...Qd4–+ 23.Rf7?? (better is 23.b6–+) 23...Rf7 24.Nf7 Qc4 25.Qe7 (25.Qc4 Rc4 26.Ne5–+) 25...Qc7 (25...c2 26.Rc1 Qd5 27.h3 Qd1 28.Rd1 cd1Q 29.Kh2–+) 26.Qe6 (26.Nh6 gh6 27.Qf6–+) 26...Re8 (26...Qf7?! 27.Qc8 Qe8 28.Qe8 Ne8 29.f3=+) 27.Nh6 Kf8 28.Qh3 gh6 29.Qh6 Qg7 (30.Qh3 Nh5–+) 0–1. Piron,Jean Marie – Borovikov,Vladislav, Ostende, 2005.

6.Nf3

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

6.Nf3 0–0 7.Be2 b6 8.0–0 Bb7 9.d3 Nbd7 10.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5 9.a4 Nbd7 10.d3).

6.Nf3 0–0 7.Be2 b6 8.Ne5 Bb7 9.0–0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5 9.Ne5).

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

6.Nf3 0–0 7.Be2 Nbd7 8.0–0 b6 9.d4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5 9.d4 Nbd7).

6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7).

6.Nf3 Nbd7 7.Be2 Qc7 8.0–0 0–0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0 7.Be2 Nbd7 8.0–0 Qc7).

6.f4 0–0

7.Nf3 (--> 5.f4 Be7 6.Nf3 0–0 7.c4).

5.bc6= bc6

6.c4 Ba6 7.Qb3 (7.Qc2 Bd6=+) 7...Be7 (7...Nbd7 8.Qa4 Bc4 9.Bc4 dc4 10.Qc4=+) 8.Nf3 (8.Nc3 Nbd7 9.Qa4 Qc8=+) 8...Nbd7 9.d4 (9.Qa4 Qb6 10.Be5 0–0=+) 9...Qc8 (9...Rb8!? 10.Qc2 Bc4 11.Bc4 dc4=+) 10.Nbd2= Rb8 11.Qc2 0–0 (11...Nb6 12.Ne5=) 12.Bd3 h6 (12...Nb6 13.Ne5=) 13.0–0 Qc7 14.Rab1 Rfc8 (14...c5 15.Rfc1=) 15.c5 (15.e4 c5 16.ed5 ed5+=) 15...Bd3= 16.Qd3 e5 (16...Rb7 17.Bc3=) 17.de5 (17.Ne5 Ne5 18.de5 Nd7=) 17...Nc5 18.Qd4 (18.Qf5 Nfe4=) 18...Ne6 (18...Nfe4=+) 19.Qh4 Ne4!–/+ 20.Qg4 Nd2 21.Nd2 Rb4 22.Qg3 Rcb8 23.Nb3 a5 24.Bc3 Bh4 25.Qf3 R4b5 26.Rbc1 a4 27.Nd4 Nd4 28.ed4 Bg5 29.Rc2 Rb1 30.g3 Qa7 31.h4 Qa6 32.Qe2 Rf1 33.Kf1 Rb1 34.Kg2 Qe2 35.Re2 Be7 36.Rc2 ½–½. Rohde,Angela – Loebel,Petra, BL2 Mitte, 1994.

6.c4 Nbd7 7.Nf3 Bd6 (7...Ne4 8.Qa4 Qb6 9.Bd4=) 8.Be2 (8.Qa4 Rb8 9.Ba3 Qc7=) 8...Qc7 9.d4 Bb4 10.Bc3 Qa5 (10...Rb8 11.Qa4 Bc3 12.Nc3 dc4 13.Qc4=) 11.Bb4 Qb4 12.Qd2 White threatens to win material: Qd2xb4 (12.Nbd2 Ba6=) 12...Rb8 13.Qb4 Rb4 14.c5 This push gains space 14...Ne4 15.Nfd2 f5 16.Ne4 fe4 17.0–0 e5 Black threatens to win material: e5xd4 18.Nc3? (better is 18.de5 would keep White in the game 18...0–0 19.Nc3=) 18...ed4–/+ 19.a3 (better is 19.ed4 Rd4 20.Rfd1 Rd1 21.Rd1–/+) 19...Rb2?? Black is ruining his position (better is 19...Rb3 would have given Black a clear advantage 20.Nd1 d3–+) 20.ed4= 0–0 Black castles and improves king safety 21.Rab1 White threatens to win material: Rb1xb2 21...Rc2 22.Rfc1 Rc1 23.Rc1 Nf6 24.h3 ½–½. Hoehnemann,Hans Juergen – Daum,Dieter (1890), Kurpfalz Seniors op, 2002.

6.d3 Bd6 7.g3 (7.Nf3 Nbd7=+) 7...Nbd7 8.Bg2 (8.Nc3 e5–/+) 8...Rb8–/+ 9.Bc3 Bb4 (9...e5 10.Nf3–/+) 10.Ne2 0–0 11.0–0 Bc3 12.Nbc3 Bb7 13.Nd4 (13.Rb1 a6=) 13...c5 14.Nf3 Nb6 (14...d4 15.ed4 Bf3 16.Qf3 cd4 17.Ne2–/+) 15.Nd2 (15.Rb1 Qe7=+) 15...d4–/+ 16.Nb5 (16.Nce4 Ne4 17.Ne4 f5–/+) 16...e5 (16...de3 17.fe3 Bg2 18.Kg2–+) 17.ed4 cd4 18.Nd6?? (better is 18.Bb7 Rb7 19.Qf3–/+) 18...Qd6–+ 19.Re1 Rfe8 20.Bb7 Rb7 21.Qf3 Qd5 (21...Rc7 22.Rac1–+) 22.Qd1 (22.Qd5 Nbd5 23.Nc4 Rc7–+) 22...Na4 23.Qe2 (23.Ne4 Ne4 24.de4 Qc6–+) 23...Rb2 24.Nc4 Nc3 25.Qd2 Rbb8 26.Qc1 Nce4 27.Qa3 Ra8 28.Qa4 Nc3 29.Qb4 e4 30.Nd6 Re6 31.Nc4 ed3 32.cd3 Nce4 33.Rab1?? Ng5–+ 34.Nd2 Nh3 35.Kf1 Qh1# 0–1. Breite – Hasler,Ulrich, corr CiF, 1990.

6.Nf3 Bd6 7.Be2 0–0 8.0–0 Nbd7 9.Nc3 a5 10.Nd4 c5 11.Nf3 Ba6 Black prepares the advance c4 12.Ba6 Ra6 13.d4 (13.Nb5 Qe7+=) 13...c4 (13...cd4 14.Qd4 Rb6 15.Rab1–/+) 14.Nb5+= Bb8 15.a4 Ne8 (15...Ne4 16.Qe1+=) 16.Bc3 1–0. rthurc (2440) – pushtiu (2310), net–chess.com, 2016.

6.Nf3 Nbd7 7.Nc3 =.

6.f4 Nbd7 7.Nf3 Bd6 (7...Rb8 8.Bc3+=) 8.Be2 (8.Ne5 Ne4 9.Qg4 Ne5 10.fe5 Bf8+=) 8...0–0 (8...Rb8 9.Bc3+=) 9.0–0 (9.Nc3 Qc7+=) 9...Rb8 (9...Qc7 10.c4+=) 10.Qc1 (10.Be5 Be5 (10...Ne5? 11.fe5 Bc7 12.ef6+–) 11.Ne5 Qc7+=) 10...Qb6 11.Ba3 (11.Be5 Be5 (11...Ne5? 12.fe5 Be7 13.ef6 Bf6 14.d4+–) 12.Ne5 Ba6+=) 11...Ba3 (11...c5 12.Nc3+=) 12.Na3= Ba6 13.c4 Qb2 (13...c5 14.Rb1 Qa5 15.Rb8 Rb8 16.Ne5 Ne5 17.fe5+=) 14.Nd4 Qc1 (14...Rfc8 15.Nb3 Qc1 16.Rfc1=) 15.Rfc1 c5 16.Nc6 (16.Nc6 Rb2 17.Rc2 Rc2 18.Nc2=). Hove,Svend Kjems – Schwetlick,Thomas, corr ICCF–Cup8/9 V069, 1990.

6.c4 Bd6

7.Nf3 0–0 8.Qc2 Nbd7 (8...Na6 9.Be5+=) 9.Nc3 Bb7 (9...Ba6 10.d3+=) 10.d4 (10.Rb1 Nb6=) 10...c5 (10...Ba6 11.c5 Bf1 12.Kf1+=) 11.Nb5 (11.cd5 cd4 12.Nd4 Nd5+=) 11...Be7+= 12.dc5 Bc5 13.Rd1 (13.Rb1 Rc8+=) 13...Rc8 14.Be2 (14.a3 Be7+=) 14...Bb4 (14...a6 15.Nc3 dc4 16.0–0+=) 15.Kf1 (15.Bc3 Bc3 16.Qc3 Qb6+=) 15...Qa5 16.a3 Qb5 17.Qb1? (better is 17.Bf6 Nf6 18.cb5 Rc2 19.Bd3–/+) 17...dc4–+ 18.ab4 (18.Bf6 Nf6 19.Qb4 Qb4 20.ab4 c3–+) 18...Qb4 (18...Bf3 19.gf3 Qb4 20.Qa1–+) 19.Bf6 (19.Qa1 Rfd8–+) 19...Qb1 20.Rb1 Bf3 21.Bd4 (21.Bc3 Be4 22.Ra1 Rc7–+) 21...Be2 (21...Be4 22.Ra1 e5 23.Bc3–+) 22.Ke2 Nc5 (22...Rc7 23.Ra1–+) 23.Rb4 (23.Rb5 Nd3–+) 23...Nd3 24.Ra4 (24.Rb7 a6–+) 24...Rc7 (24...e5 25.Ba7 f5 26.Rha1–+) 25.Rha1 e5 26.Ba7 (26.Rc4 Rc4 27.Kd3 Rc6 (27...ed4?! 28.Kc4 de3 29.fe3–/+) 28.Be5 Rd8 29.Bd4 a6–+) 26...f6 (26...f5 27.Bb6 Rc6 28.Ba5–+) 27.e4 Nf4 28.Kf3 Rd8 29.Be3 Rd3 30.g3 Ne6 31.Rc1 Nd4 32.Kg2 c3 33.Ra8 Kf7 34.Ra3 h5 35.h4 Nb5 36.Rb3 Nd4?? 37.Ra3= Nb5?? (37...Nb5 38.Rb3 Rb7–+; better is 37...Ke6–+). Novikov,Konstantin I – Pincher,Denis, Tula Club–ch op, 2000.

7.Nf3 0–0 8.Nc3 Nbd7 +=.

7.Nf3 0–0 8.Nc3 e5 +=.

7.Nf3 0–0 8.Be2 Nbd7 9.Nc3 e5 10.d4 (10.cd5 cd5 11.0–0 a6+=) 10...e4 (10...Rb8 11.Qc2+=) 11.Nd2= Re8 (11...Rb8 12.Rb1=) 12.0–0 (12.Rb1 Ba6=) 12...Nf8 (12...Qc7 13.h3=) 13.Re1 (13.Rb1=) 13...h5 (13...Rb8!? 14.Rb1 Qc7=) 14.Bh5 (14.c5 Bb8+=) 14...Nh5+= 15.Qh5 Re6 16.f4 (16.cd5 Rh6 17.Qe2 Bh2 18.Kf1 Bc7–+) 16...ef3 (16...Rh6 17.Qe2 Qh4 18.g3+=) 17.Qf3 (17.cd5? Rh6 18.Qf3 Bh2 19.Kf2 Rf6–+; 17.gf3?? Rg6 18.Kh1 Rg5 19.Qg5 Qg5–+; worse is 17.Nf3 Rh6 18.Qg5 f6 19.Qh6 gh6 20.cd5 Rb8–+) 17...Rb8 18.Rab1 (worse is 18.cd5 Rh6 19.Nf1 Rb2 20.dc6 Ne6–+) 18...Rb2! 19.Rb2 Bh2 20.Kh2 Decoy to h2 20...Qh4 Theme: Double Attack 21.Kg1 (21.Qh3 Qe1 22.Rc2 Rh6 23.Qh6 gh6 24.cd5 Qe3–+) 21…Qe1 (21...Qe1 22.Nf1 Qc3–+). Baak – Hommeles, NL, 1979.

7.Nf3 Nbd7 8.Qa4 c5 9.cd5 ed5 10.Bf6 Qf6 11.Nc3 =.

6.Nf3 Be7

7.Nc3 Nbd7 =.

7.c4 0–0 8.d4 (8.Nc3 Nbd7=) 8...Bb7 (8...Nbd7 9.Qc2=) 9.Bd3 (9.Nbd2 c5=) 9...c5 (9...dc4 10.Bc4 c5 11.0–0=) 10.Qb3 (10.cd5 Bd5 11.Nbd2 Nbd7=) 10...Ba6 (10...Qc7 11.Nbd2+=) 11.cd5 (11.Nbd2 Nbd7=) 11...Bd3 (11...Nd5 12.dc5 Qa5 13.Nbd2=) 12.Qd3 Qd5 13.0–0 (13.Nc3 Qh5=) 13...c4 (13...Rd8 14.Nc3 Qh5 15.Ne2=) 14.Qc2 Nc6 (14...Rc8 15.Rc1=) 15.Nc3 (15.Rc1 Rab8+=) 15...Qd8 (15...Qh5 16.Qe2=) 16.Ne2 (16.Qa4 Na5+=) 16...Qd5 (16...Rc8 17.Qc4 Ne5 18.Qa4=) 17.Nf4 (17.Rfc1 Na5+=) 17...Qb5 18.Rfc1 (18.Bc3=) 18...Na5 (18...Rfc8!?=) 19.Rab1 (19.Bc3 Nd5 20.Rab1+–) 19...Rac8? (better is 19...Qa6!?+/–) 20.Bc3+– Qa6 21.Qa4 Bd8 (21...Bd6 22.Rb5 Bf4 23.ef4+– (23.Qa5?! Qa5 24.Ra5 Bd6+/–; 23.Ba5?! Bc7=)) 22.Rb5 Ne4 23.Ba5 (23.Ra5?! Ba5 24.Ba5 Nd6+/–) 23...Ba5?? (23...Nd6 24.Rc5 Bb6+/–) 24.Ra5 (24.Ra5 Qb6 25.Ra7+–) 1–0. Wall,Bill – Guest7628, internet, 2005.

7.d4 0–0 8.c4 Ba6 =.

7.d4 0–0 8.Nbd2 Nbd7 9.c4 Bb4 (9...Rb8 10.Qc2=) 10.a3 Ba5 11.Qc2 (11.Bd3 dc4 12.Bc4 c5+=) 11...Ne4 (11...Ba6 12.Bc3=) 12.Bd3 f5 (12...Ba6 13.Rd1=) 13.0–0+= (< 13.Be4 fe4 (13...de4?! 14.Ne5=) 14.Ne5 Ne5 15.de5 Qg5–/+) 13...Bc7 (better is 13...Ba6+=) 14.Ne5?? (14.Rab1 Rb8+=) 14...Rf6?? (better is 14...Nd2 15.Nd7 Bh2 16.Kh2 Nf1 17.Rf1 Qh4 18.Kg1 Bd7–+) 15.f3 Nd2 16.Qd2= Ne5 17.de5 Rh6 18.c5 g5 19.Bc3 Qe7+= 20.Bd4 a5 21.Qe2 Qg7 22.f4 g4 23.Qf2 Bd8 24.Rfb1 Rg6 25.Qe1 Qf8 26.Ra2 Qe7 27.Rab2 Bc7 28.Bf1 Kh8 29.Rb3 Rg8 30.Rc1 h5 31.Rb2 h4 32.Kh1 Ba6 33.Ba6 Ra6 34.a4 Raa8 35.Rcb1 h3 36.g3 Rac8 37.Rb7+/– Qd8 38.R1b3 Rb8+= 39.Qb1 Rc8 40.Bc3?? d4!–/+ 41.e4? dc3–+ 42.Rc3 Qd4 43.Qc2 Qe4 44.Qe4 fe4 45.Rc1 Rb8 46.Rcb1?? Rb7–+ 47.Rb7 Rb8 48.Rb8 Bb8 49.Kg1 Ba7 50.Kf1 Bc5 51.Ke2 Bg1 52.f5 ef5 53.Kf1 Bh2 54.Kf2 Bg3 (55.Kg3 Kg7–+) 0–1. Riegler,Markus – Mrinski,Eugen, Baden–ch AT3, 2003.

7.d4 Nbd7 8.Bd3 =+.

7.Be2 0–0 8.0–0 Nbd7 9.c4 Rb8 10.Qc2 Qb6 11.Be5 (11.Bc3 c5=) 11...Ne5+= 12.Ne5 Nd7 (12...c5 13.Nc3+=) 13.Nd7= Bd7 14.Nc3 Qa5 (14...Qb2 15.Qd3=) 15.Rab1 (15.d4 Bb4 16.Na4 e5=) 15...e5 16.Bd3 (16.d4 Bb4 17.Rb3 ed4 18.ed4 Rbe8=) 16...g6 (16...e4 17.Be2+=) 17.f3 (17.cd5 cd5 18.e4 de4 19.Be4 Be6+=) 17...Rb4 (17...Be6 18.a4+=) 18.Rb4 Bb4 19.Rb1 (19.a3!? Bd6 20.Rb1+=) 19...d4–/+ 20.ed4 ed4 21.Ne4 f5 (21...Be6 22.f4+=) 22.c5= Be6 23.Bc4 Bd5 (23...fe4 24.Be6 Kg7 25.Qe4 Qc5 26.d3=) 24.Qb3 fe4 25.Bd5 (25.Qb4 Qb4 26.Bd5 cd5 27.Rb4 Rc8 28.Rd4 Rc5 29.fe4 Rc1 30.Kf2 de4+/–) 25...cd5 26.Qb4 Qb4 (26...Qa2!? 27.Rb2 Qc4 28.Qc4 dc4=) 27.Rb4+= Rc8 28.Rd4 Rc5 29.fe4 de4 30.Kf2 Ra5 (30...Rc1!?+=) 31.a4+/– (31.a4 Kf7 32.Re4+/–; 31.Re4?! Ra2 32.Ke3 a5=) 1–0. Topchy,Genrikh F – Hadrys,Bogdan, corr, 1991.

7.Be2 Nbd7 8.Ne5 =.

7.Ne5 Qc7 =.

5.bc6= Nc6

6.Bb5 Be7 7.Nf3 Qb6 (7...0–0 8.0–0+=) 8.Nc3 0–0 9.Rb1 Bd7 10.Na4?? (better is 10.Be2=) 10...Qb5–+ 11.Bf6 Qa4 12.Be7 Ne7 13.Ne5 (13.Rb7 Rab8 14.Qb1 Rb7 15.Qb7 Ng6–+) 13...b6 14.0–0 (14.c3 f6 15.Nd7 Qd7–+) 14...f6 (14...Bc8 15.Rb2–+) 15.Nd3 (15.Nd7 Qd7 16.c3 e5–+) 15...Rac8 (15...Qa2 16.Rb2 Qc4 17.f4–+) 16.Rb3 (16.c3 Qd1 17.Rfd1 e5–+) 16...Rc4 (16...Qa2 17.Rb2 Qc4 18.f4–+) 17.f4? (17.Nb2 Qa2 18.Nc4 dc4–+) 17...Be8 (17...Qa2!? 18.Rb2 Qa4 19.Qb1–+) 18.Qb1?! (18.Nb2 Qa2 19.Nc4 dc4–+) 18...Bg6 (18...Rc7 19.Qb2–+) 19.Ne1 (19.Nb2 Bc2 20.Qc2 Rc2 21.Na4 Ra2–+) 19...Rfc8 20.d3 R4c7 21.g3 (21.Rf2 Nf5 22.e4 Ne3–+) 21...Nf5 22.Rf3 (22.Qc1 d4 (worse is 22...Qa2 23.Ra3 Rc2 24.Nc2 Qc2 25.Qc2 Rc2 26.Ra7–+) 23.Ra3 Qd7 24.ed4 Qd4 25.Rf2 Ne3–+) 22...Qa5 (better is 22...Bh5!? 23.Rf2 Ne3 24.Rb4–+) 23.g4 Ne7 (23...Ne3 24.Re3 Qd2 25.Re6–+) 24.Rf2 Rc3 (24...Qc5 25.Ng2–+) 25.Rb5 (25.Nf3 Bf7–+) 25...Qa3 26.Rb3 Rb3 27.ab3 Qc5 28.Re2 Be8 29.Nf3 Ng6 30.Kh1 Bc6 31.d4 Qc3 32.Qg1 Nf4! 33.Rd2 Ng6 34.Qe1 Bb5 35.h4 a5 36.h5 Ne7 37.g5 Rf8 38.gf6 Rf6 39.Kg2 Nf5 40.Kf2 Nd4! 41.Rd4 Qe1 42.Ke1 Rf3 43.Kd2 Rf2 44.Kc3 Re2 45.e4 Re4 46.Re4 de4 47.Kd4 Bc6 48.c3 Kf7 49.Ke3 Kf6 50.Kf4 e5 51.Kg4 e3 52.Kg3 Kf5 53.c4 Ke4 54.Kg2 Kd3 55.Kf1 Kd2 (55...Kd2 56.Kg1 e2 57.Kh2 e1Q 58.Kh3 Qf2 59.Kg4 Bd7 60.Kg5 Qf4#) 0–1. Romischke,W – Leisner, 1983.

6.c4 e5 7.cd5 Nd5 8.Bb5 =+.

6.Be2 Be7 7.Nf3 0–0 8.0–0 Qc7 9.c4 dc4 10.Bc4 Rd8 11.Nc3 Nb4 12.Bb3 Nd3 13.Qc2 b6 14.Ne1? (better is 14.Nd5! Nd5 15.Qd3=+) 14...Nb2 15.Qb2 Ba6 16.d3 Bd3 17.Nd3 Rd3 18.Rac1 Qe5 19.Nd1 Bd6 20.g3?? (better is 20.Qe5 Be5 21.f4–/+) 20...Rd1!–+ 21.Qe5 (21.Rcd1 Qb2) 21...Rf1 (21...Be5 22.Rfd1 Ne8 23.f4+/–) 22.Kf1 Be5 23.Kg2 Ne4 24.Bd1 Nd6 25.Rc2 Rc8 26.Rd2 Nc4 27.Rc2 Rc5 28.Kg1 Nd6 29.Rc5 bc5 30.Kf1 Kf8 31.Bc2 h6 32.Ke2 Ke7 33.Kd3 Nb5 34.Kc4 Na3 35.Kd3 Nc2 36.Kc2 Kd6 37.Kd3 Kd5 38.e4 Kc6 39.Kc4 Bd6 40.f4 Kb6 41.e5 Be7 42.g4 (42.a3 f6 43.ef6 Bf6–+) 42...Ka5 (42...g5 43.f5–+) 43.f5 (43.Kb3 g5 44.fg5 Bg5–+) 43...ef5 (better is 43...Ka4!? 44.fe6 fe6 45.Kd3–+) 44.gf5 f6 45.ef6 gf6 0–1. valpa – cello, HCL–C1907 playchess.de, 2003.

6.Nf3 Bb4 7.c3 (7.Bd3 0–0=) 7...Bc5 8.Bb5 Ne4 (8...0–0 9.Ba3 Ba3 10.Na3–/+) 9.0–0 Bd7 10.d4 Qb6 11.Bc6 Bc6 12.Qc2 Be7 13.Nbd2 Nd2 14.Nd2 Qa6 15.f4 0–0 16.f5 Bd7 17.fe6 Be6 (17...fe6 18.c4–/+) 18.a4 Bg5 19.Rfe1 g6 20.Nf3 Bf6 21.e4 Bg7 22.Ng5 Qc6 23.Ne6 Qe6 (23...fe6 24.Qd3+=) 24.e5 a6 25.Rab1 Rfc8 26.Ba3 Qc6 27.Bc5 Rab8? (better is 27...b5+=) 28.Rb6+– Qc7 29.Reb1?? (29.Qb3 Bf8 30.Bd6 Bd6 31.ed6+–) 29...Be5+= 30.de5? (better is 30.g3!?+=) 30...Qc5–/+ 31.Kh1 (31.Qf2 Qc3 32.Rf1 Rf8–+) 31...Qc3 32.Qf2? (better is 32.Qc3 Rc3 33.h3–+) 32...Rc7 33.Qf6 (33.Ra6 Qe5 (33...ba6?! 34.Rb8 Rc8 35.Rc8 Qc8 36.h3–/+) 34.Ra5 Rbc8–+) 33...Qc1 34.Qf1 Rbc8 (34...Qf1!? 35.Rf1 Re8 36.Rd6 Re5 37.h3–+) 35.Rc1 Rc1 36.Kg1 Rf1 37.Kf1 Rd8?? (better is 37...Rc4–+) 38.Rb7+= d4 39.Ke2 Rd5 40.Kd3 Re5 41.Kd4 Re2 42.Rb6 Rg2 43.Ra6 (43.h3 a5 44.Rb5 Rh2 45.Ra5 Rh3–+) 43...Rh2 44.Ke5? (better is 44.a5!?–/+) 44...Re2 45.Kf6 Re8 46.Ra7 Re6 47.Kg5 Kg7 48.a5?? (better is 48.Kf4–+) 48...h6 (48...Re4 49.Rf7 Kf7 50.a6 Kg7 51.a7 h6) 49.Kf4–+ Re8 (49...g5 50.Kg4 Re4 51.Kf3 Ra4–+) 50.a6?? (better is 50.Rc7 Ra8 51.Rc5–/+) 50...g5 (50...Re6 51.Kf3–+) 51.Kf5 (51.Kf3 Re6–+) 51...Re6 52.Ra8 Rb6 53.a7?? (53.Kg4 Rb4 54.Kg3–+) 53...Ra6 54.Ke5 h5 55.Kd5 h4 56.Kc5 (56.Re8 Ra7 57.Ke4–+) 56...h3 57.Kb5 (57.Rb8 h2 58.a8B Ra8 59.Ra8–+) 57...Ra1 58.Kb6 h2 0–1. preethan (2135) – omaini (1955), net–chess.com, 2015.

6.Nf3 Qb6 7.Bf6 gf6 8.Nc3 Bb4 9.Be2 (9.Na4 Qa5 10.c3 Bd6=) 9...Bc3=+ 10.dc3 Qb2 11.0–0 (11.c4 Qc3 12.Nd2 d4=+) 11...Qc3 12.Bb5 (12.Rb1 Rg8=+) 12...Bd7 13.Bc6 (13.Rb1 Rc8=+) 13...Bc6–/+ 14.Nd4 Kd7 (14...e5 15.Ne2 Qc4 16.Ng3–/+) 15.Qd3 (15.Rb1!?=) 15...Qd3–/+ 16.cd3 f5 (16...e5 17.Nc6 bc6 18.f4–/+) 17.Rfc1 (17.Rab1 b6=+) 17...Rhc8 18.Nf3 (18.Rab1 Kd6=+) 18...Kd6 (18...Rc7 19.Ng5–/+) 19.d4 f6–/+ 20.Nd2 Bb5 21.Nb3 b6 22.a4 Bc4 23.Nd2 Bd3 24.a5 b5 25.Nb3 Rc1 26.Rc1–+ Bc4 27.Nc5 b4 0–1. gtate (1920) – vectra (2595), net–chess.com, 2005.

6.Bb5 Bd7

7.Nf3 Bd6 8.0–0 +=.

7.Nf3 Bd6 8.Ba3 Ba3 9.Na3 +=.

7.Nf3 Be7 8.0–0 0–0 9.Nc3 (9.a4 a6 10.Bc6 bc6+=) 9...Qc7 (9...a6 10.Bc6 Bc6 11.a4+=) 10.Bd3 (10.Ne2 Rac8+=) 10...Nb4 (10...e5 11.Be2+=) 11.Qe2 (11.Be2 e5+=) 11...Nd3 (11...e5 12.Ne1–/+) 12.cd3 (12.Qd3 Bd6+=) 12...Rac8 (12...Qa5 13.Rfc1+=) 13.Rfc1 Qb8 (13...Bc6 14.Nd4+=) 14.d4 (14.Nd1 Qd6+=) 14...a6 15.d3 Bd6 (15...b5 16.a3+=) 16.e4= Bf4 17.Rc2 de4 (17...b5 18.e5 Ng4 19.a3=) 18.de4 Bc6 19.Ba3 Rfd8 (19...Rfe8 20.Bc1=) 20.Be7+= Re8 21.Bf6 gf6 22.g3 Bh6 23.Nh4 (23.Rd1 Bg7=) 23...Kh8 (23...Qc7 24.a4=) 24.Qh5+= Kg7 25.Qg4 (25.Qf3 Bg5=) ½–½. Dlugolecki,Grzegorz – Moglia,Alejandro, Eclipse1 email, 2000.

7.Nf3 Be7 8.0–0 0–0 9.Bc6 bc6 10.d3 Ne8 11.Ne5 Rb8 12.Nd7 Qd7 (worse is 12...Rb2 13.Nf8 Kf8 14.Qc1+/–) 13.Be5 Nd6 14.Nc3 f6 15.Bd6 Bd6 16.e4 Rb7 17.Rb1 Rb1 18.Qb1 Rb8 19.Qc1 Qc7 20.g3 Qa5 21.Ne2 Qa2 22.Nd4 e5 23.Nf5 (23.Nc6? Rb6 24.Na7 Qa7 25.ed5 Bc5–+) 23...Bf8 24.ed5 cd5 25.Ne3 d4 26.Nc4 a5 27.Kg2 a4 28.f3 a3 29.Rf2?? (29.Qd1–+) 29...Rb1 30.Qd2 Bb4 31.Qe2 (31.c3 Qd2 32.Nd2–+) 31...Re1 32.Qe1 Be1 33.Re2 Bb4 34.Kf2 Qb1 (34...Qb1 35.Na3 Ba3–+) 0–1. danielro (2300) – pierred (2845), net–chess.com, 2015.

7.Nf3 Be7 8.0–0 b6 9.c4 (9.Qe2 0–0=) 9...0–0 (9...dc4 10.Bc4 a6 11.d4=) 10.Na3 (10.Qa4 Qe8 11.cd5 ed5=) 10...Re8 (10...a6 11.Bc6 Bc6 12.d3+=) 11.Qa4= Rc8 (11...Ba3 12.Ba3 Rc8 13.cd5 ed5 14.Bb2=) 12.cd5 (12.Rac1 a6 13.Ba6 Ra8–+) 12...Nd5= 13.Rac1 Nb8 (13...Ndb4!? 14.Nd4 Nd4 15.Bd4 Rc1 16.Rc1 Bb5 17.Nb5 e5 18.Be5 Qd2=) 14.Rc8+= Qc8 15.Rc1 (15.Qa7 Bb5 16.Nb5 Qc2+/–) 15...Bb5 (15...Qd8 16.d3=) 16.Nb5+= Qa6 17.Qa6 Na6 18.Na7 Nab4 (18...Nc5 19.Nc6+=) 19.Rc8 (19.e4 Nf4 20.Rc8 Rc8 21.Nc8 Bf8+/–) 19...Rc8 20.Nc8 Na2 (20...Bf8 21.Bd4+/–) 21.e4 (21.Ne7?! Ne7 22.Kf1 b5=) 21...Bf6 22.ed5 Bb2 23.d6 The passed pawn on d6 quickly leads to threats (23.de6 fe6 24.Nb6+/–) 23...b5 (better is 23...Bf6!?+/–) 24.d4+– Nb4?? (better is 24...Bc3+–) 25.d7 Nc6 26.Ne7!! (26.Ne7 Kh8 27.Nc6 g6 28.d8Q Kg7 29.Nfe5 Ba3 30.Ng4 h6 31.Qf6 Kg8 32.Nge5 g5 33.Qf7 Kh8 34.Ng6#) 1–0. Deppert,Sven – Walther,Horst, Deidesheim op5, 2000.

7.Nf3 Be7 8.Nc3 a6 9.Bc6 Bc6 +=.

6.c4 d4

7.ed4 Nd4 8.Nf3 Bc5 9.Be2 Nf3 10.Bf3 Bd4 (10...Bf2!? 11.Kf2 Qb6 12.Ke1 Qb2–/+) 11.Qa4 Bd7 12.Qb3 Bb2 13.Qb2 Bc6 14.Bc6 bc6 15.0–0 0–0 16.d4 Rb8 17.Qc3 Qc7 18.Nd2. hertford – Churchchess, ChessWorld.net, 2002..

7.Nf3 e5 8.Qa4 Nd7 9.Qb5 a6 –+.

7.Nf3 e5 8.Qb3 Bc5 9.ed4 Nd4 10.Bd4 ed4 11.Be2 –/+.

7.Nf3 e5 8.Qb3 Be7 9.Na3 (9.Be2 0–0–/+) 9...0–0 10.Be2 d3 11.Bd1 (11.Bf1 Qa5–/+) 11...e4 12.Nd4 a6 13.Rc1? (13.f3 Bc5 14.Nc6 bc6–/+) 13...Nd7?? (better is 13...Na5 14.Qc3 b5 15.Ndb5 ab5 16.cb5 Be6–+) 14.Ba1 (14.Rb1 Nc5 15.Qc3 Bf6–/+) 14...Qa5 15.Nb1 Qg5 16.g3 Nde5 (16...Nc5!? 17.Qb2 Bh3–/+) 17.f4=+ ef3 18.Nf3 Qf5 (18...Nf3 19.Bf3 Rd8 20.Nc3=+) 19.Be5 Ne5 20.Ne5 Qe5 21.Qd3 Bf5 22.Qd4 Qd4=+ 23.ed4 Bf6 24.d5 Rfe8 25.Kf2 Bd4 26.Kg2 Bb2 27.Rc2 Be4 28.Kh3 Bd4 29.Rf1 Rad8 30.Rc1–/+ Rd6 31.Bf3 Bf3–/+ 32.Rf3 Rh6 33.Kg4 Rh2 34.Rff1 h5–+ 35.Kf3 g5 36.Rh1?? Rf2# 0–1. Deregowski,Richard – Olbrich, Recklinghausen op, 1994.

6.c4 Be7

7.cd5 ed5 8.Nf3 0–0 9.Be2 h6 10.0–0 a6 11.a4 a5 (11...Re8 12.d3=) 12.Nd4 Bb4 13.Nc6 bc6 14.Bc3 Ne4 15.Bb4 ab4 16.d4 Qg5 17.Bf3 Bf5 (17...Ba6 18.Re1=) 18.Qe2 (18.Qb3 Rfb8=) 18...Rfb8 19.Be4 Be4 20.f3 Bh7 21.e4 (21.a5 b3+=) 21...de4–/+ 22.fe4 Rd8 23.Qf3 (23.Nd2!? Rd4 24.Nf3=) 23...Bg6 24.d5 (better is 24.Qf2!? Be4 25.Nd2–/+) 24...cd5–+ 25.ed5 Qd5 26.Qd5 (26.Qf2 Ra6 27.Qh4 Rf6–+) 26...Rd5 27.a5 (27.Re1 Rda5–+) 27...Rda5 28.Ra5 Ra5 29.Nd2 Bc2 30.Nc4 (30.Rf3 Ra2–+) 30...Rc5 31.Nb2 b3 32.Na4 (32.Rf4 f5–+) 32...Ra5 33.Nc3 b2 34.Kf2 (34.Re1 Rc5 35.Re8 Kh7–+) 34...Rf5 (better is 34...Rc5 35.Rb1 Bb1 36.Nd1–+) 35.Ke2 (35.Ke1 Rd5! 36.Rf4 Rd3–+) 35...Rf1 (better is 35...Bd3! 36.Kd3 Rf1 37.Kc2–+) 36.Kf1 b1Q 37.Nb1 Bb1 38.Kf2 h5 39.h4 f6 40.Ke3 g5 41.g3 Kg7 42.hg5 fg5 43.Kf3 Kf6 44.Ke3 Kf5 45.Kf3 Be4 46.Ke3 Bb7 47.Ke2 Kg4 48.Kf2 Bd5 (48...Bd5 49.Ke3 h4–+) 0–1. rayfranke (2485) – mic (2310), net–chess.com, 2016.

7.Nf3 0–0 8.Be2 a6 (8...dc4 9.Bc4 Na5 10.Bb5=+) 9.0–0 (9.Bf6 Bf6 (< 9...gf6 10.cd5 Qd5 11.Nc3+=) 10.d4 dc4 11.Bc4 e5–/+) 9...dc4 10.Bc4 b5 11.Be2 Bb7 12.a4 b4 13.d4 a5 14.Nbd2 Qd5 15.Bd3 Ba6 (15...Rab8 16.Qb3–/+) 16.Ba6 (16.e4 Qd6 17.e5 Qd5 18.Ba6 Ra6 19.ef6 Bf6+/–) 16...Ra6=+ 17.Qc2 (17.Rc1 Rb6=+) 17...Rd8 (17...Rc8 18.e4 Qd6 19.e5+/–) 18.e4=+ Qh5 19.Rac1 Rc8 20.Qd3 (20.Nc4 Rb8=) 20...Raa8 (20...Rb6 21.Nb3=+) 21.Rc2 Na7 (21...Rab8 22.Rfc1 Rb6 23.Ne5+–) 22.Rfc1 Rc2 23.Rc2 Nc8 24.Rc6 Nd7 25.Qc2 Ncb6= 26.h3 Ra7 27.Nc4 Nc4 28.Qc4 Nf8 29.Rc8 Rb7 30.Qc6+= Ra7 31.Bc1 h6 32.Be3 b3 33.Rb8 Bb4= 34.Bf4 b2+= 35.Qc2 Qg6 36.Bg3 f6 37.Nh4 Qh5+/– 38.Rc8 Rb7 39.Qb2 Qd1 40.Kh2 Qa4 41.Nf3 Qd7 42.Qc2 a4 43.Rc6 Ra7 44.Qc4 a3 45.Ra6 Qb7?? 46.Ra7+– Qa7 47.Qa2 Qb6 48.e5 f5 49.Bf4 Qc6 50.Bd2 Bd2 51.Qd2 Qb7 52.Qc2 Qb2 53.Qb2 ab2 54.Nd2 Ng6 55.Kg3 Kf7 56.Kf3 Nh4 57.Kg3 g5 58.f4 Kg6 59.fg5 hg5 60.Kf2 f4 61.g4 fg3 62.Kg3 Nf5 63.Kf3 Nd4 64.Ke4 Nc6 65.Kd3 Ne5 66.Kc2 Kf5 67.Kb2 Nd3 68.Kc3 Nf4 69.Nf3 Nh3 70.Nd4 Ke5 71.Nf3 Ke4 72.Nd2 Kf4 (73.Kd4 e5 74.Kd5 Kf5–+) 0–1. Waibel,Ulrich – Faner,Frederic, compuserve, 1996.

6.Nf3 a6

7.c4 dc4 8.Bc4 b5 9.Bb3 Nb4 10.0–0 Bb7 11.d4 Bd6 12.Nbd2 0–0 13.a3 Nd3 14.Bc3 (14.Qc2 Nb2 15.Qb2=+) 14...b4 (better is 14...Rc8!? 15.Nb1 Be4–/+) 15.ab4= Rc8 16.Bc4 Bb4 (16...Nd5 17.Bd3 Nc3 18.Qb3+=) 17.Qb3 (17.Bb4 Nb4 18.Qa4 Nbd5 19.Ba6 Nc3+/–) 17...a5+= 18.Bb4 Nb4 19.Ra3 Nfd5 20.Ne1 Qc7 21.Nd3 Nd3 22.Qd3 Ra8 23.Rb1 Nb4 24.Qb3 Rfb8 25.e4 (25.Qd1 e5=) 25...Qf4 (25...Rd8!? 26.Qc3 Qb6–/+) 26.Qe3= Qe3 27.fe3 Bc6 28.Nb3?? (better is 28.Bb3=) 28...Nc2–+ (28...Be4?! 29.Rc1 Nc2 30.Ra5 Ne3 31.Re5–+) 29.Ra2 Be4 (< 29...Ne3 30.Bd3 a4 31.Nc5 Rb1 32.Bb1–+) 30.Rbb2 Ne3 31.Re2 (31.Na5 Rb2 32.Rb2–+) 31…Nc4 (32.Na5 Rb1 33.Kf2 Nd6–+) 0–1. Suess,Stefan – Koch, Odenwald, 1984.

7.c4 dc4 8.Bc4 b5 9.Be2 Be7 10.0–0 0–0 11.d4 Bb7 12.Nbd2 Rc8 13.a4 b4 14.Nb3 (14.Rc1 Rc7=) 14...Na5=+ 15.Nfd2 Nb3 16.Nb3 a5 17.Qd3 Bd5 (17...Be4!? 18.Qb5 Rc2–/+) 18.Rac1 Bb3 19.Rc8 Qc8 20.Rc1 (20.Qb3 Qd7=) 20...Qb7 (20...Ba4!? 21.Rc8 Rc8–/+) 21.Qb3= Rc8 22.Bc4 Kf8 23.f3 Nd5 24.Kf2 (24.e4!? Nb6 25.Bb5=) 24...Nb6=+ 25.Bd3? (better is 25.Qd3!? Nc4 26.Rc4 Rc4 27.Qc4=+) 25...Rc1–+ 26.Bc1 g6?? (better is 26...Qc7 27.Qc2 Qh2–+) 27.Bb2 Qd5 28.Qc2 b3 29.e4 bc2 30.ed5 Na4 31.Bc1 ed5 32.Bc2 Nb6 33.Ke2 Bb4 34.Kd3 Ke7 35.Bd1 Kd6 36.Kc2 Kc6 37.Kb3 Kb5 38.h3 a4 39.Ka2 Kc4 40.Bb2 Kd3 41.Ba3 Ba3 42.Ka3 Kd4 43.f4 Ke3 44.Bf3 d4 45.f5 gf5 46.h4 h6 47.Kb4 d3 48.Kc3 a3 49.Kb3 Nc4! 50.Bd5 d2 51.Bf3 Ne5 52.Bd1 a2! 53.Ka2 Kf2 54.Kb2 Kg2 55.Kc3 Nf3 56.Kd3 Nh4 (57.Kd2 f4–+; 56...f4 57.h5–+) 0–1. Mueller,Ernst – Hess,Karl, 04sen.Laax (SUI) op, 2005.

7.Be2 Be7 8.0–0 0–0 9.Ne5 =+.

7.Be2 Be7 8.0–0 b5 9.d4 (9.a4 ba4 10.Ba3 0–0=) 9...Na5 (9...0–0 10.a4 b4 11.c3=) 10.Nbd2 0–0 11.Rc1 (11.a4 Nc4 12.Nc4 bc4=) 11...Bb7 12.Ne5 Rc8 13.c3 (13.a4 ba4 14.Ra1 Qb6=+) 13...Nd7 14.c4? (better is 14.Nd7!? Qd7 15.Ra1=+) 14...Ne5–+ 15.de5 bc4 (15...dc4 16.Bd4–+) 16.a4 (16.Bc3 Nc6–+) 16...Qc7 (16...Bc6 17.Qc2–+) 17.Nb1 (better is 17.Bd3!?–+) 17...Nb3 18.Rc2 Rb8 19.Ba3 (19.Bd4 Qa5–+) 19...Bc6 (better is 19...Ba3!? 20.Na3 Qe5 21.Bf3–+) 20.Be7 Qe7 21.Ra2 (21.Nc3 Rb4–+) 21...a5 22.Nd2 Qg5 23.f4 Qe7 24.f5 ef5 25.Rf5 Ba4! 26.Bg4? Nd2 27.Qd2 Rb1 28.Kf2 Qh4 (29.Kf3 Bd1 30.Qd1 Rd1–+) 0–1. gtate (1965) – mcjohnson (2025), net–chess.com, 2004.

6.Nf3 Bd6

7.Bb5 0–0 8.Bc6 bc6 9.0–0 Rb8 10.Re1?? (better is 10.Be5–/+) 10...Rb2–+ 11.Nc3 Rb8 12.d3 (12.e4 de4 13.Ne4 Ne4 14.Re4 c5–+) 12...e5 13.e4 (13.Qd2 Bg4–+) 13...d4 (better is 13...Qa5 14.Ne2–+) 14.h3 (14.Nb1–+) 14...dc3 15.Rb1 (15.d4 Qa5–+) 15...Rb1 (better is 15...Rb2!? 16.d4 Qb6 17.Ra1–+) 16.Qb1 Be6 17.Qb7 Qc7 18.Qc7 Bc7 19.Rb1 (19.d4 ed4 20.Nd4 Rb8–+) 19...Rb8 20.Rb8 Bb8 21.Kf1 (21.d4 Ne4 22.a3 Nd2–+) 21...Ba2 22.Ke2 a5 23.Kd1 a4 24.d4 ed4 25.e5 Ne4 (25...a3 26.Kc1 Bc4 27.Kb1 d3 28.cd3 Bd3 29.Ka2 c2 30.Ne1 Bc4 31.Ka3 c1Q 32.Kb4 Nd5 33.Kc5 Be2 34.Nc2 Qc2 35.Kd4 Ba7) 26.Nd4 Nf2 27.Ke2 Ne4 (27...Ba7 28.e6 Be6 29.Nc6–+) 28.Kd3 Bd5 29.g4 Be5 30.Nf5 Kf8 31.Ne3 a3 32.Nd1 (32.Ng2 a2 33.Nh4 a1Q 34.Ng6 fg6 35.Ke2 Ng3 36.Ke3 Qf1 37.h4 Qe2) 32...a2 33.Nc3 (33.Ne3 a1Q 34.g5 Qe1 35.Nd5 cd5 36.g6 Qd2) 33...a1Q (33...Nc3 34.Ke3 a1Q 35.Kf2 Qd1 36.g5 Qe2 37.Kg1 Bd4) 34.Ne4 Be4 (34...Qf1 35.Kd2 Be4 36.h4 Qf2 37.Kd1 Bf4 38.g5 Bc2) 35.Ke4 Qd4 0–1. nerob (2055) – danielro (2300), net–chess.com, 2015.

7.c3 0–0 8.c4 Bd7 –/+.

7.c3 0–0 8.d4 Ne4 9.Bd3 =+.

7.c3 0–0 8.d4 Re8 9.Bd3 (9.c4 b6=+) 9...e5–/+ 10.Bc2 (10.de5 Ne5 11.Ne5 Be5–/+) 10...ed4 (10...e4 11.Nfd2–/+) 11.Nd4 (11.cd4 Qb6 12.Bc3 Ne4–/+) 11...Bg4 12.f3 (12.Qd3 Ne5 13.Qb5 a6–/+) 12...Bh5 (12...Bd7 13.Bc1–/+) 13.g4 (13.Bc1 Nd4 14.Qd4 Qe7–/+) 13...Bg6 (13...Re3 14.Kf2 Ng4 15.fg4 Qh4 16.Ke3 Re8 17.Be4 Re4 18.Kd2 Nd4 19.cd4 Qf2 20.Kc1 Bf4 21.Nd2 Bg4 22.Kc2–+) 14.Nc6 (14.Bg6 fg6 15.Bc1 Nd4 16.Qd4 g5–/+) 14...bc6 (14...Qb6 15.Bc1 Bc2 16.Qc2 Qc6 17.0–0–+) 15.Bg6 hg6 (better is 15...fg6 16.Bc1 Rb8–+) 16.h4? (better is 16.Bc1!?–/+) 16...Re3–+ 17.Kf2 Bc5 18.Kf1 Qe7 19.a4 Re8 20.Na3 Re1 21.Qe1= Qe1?? 22.Re1+– (22...Rb8 23.Rh2+–) 1–0. Manure – mazz19, caissa.com, 2007.

7.c3 e5 8.c4 –/+.

7.Nc3 =+.

7.c4 e5 8.cd5 (8.Nc3 dc4 9.Bc4 0–0 10.Rc1+=; 8.c5 Bc5 9.Ne5 Ne5 10.Be5+=) 8...Nd5 9.Bc4 (9.Bb5 Qc7 10.e4+=) 9...Nb6 10.Bb3 (10.Bb5!? Bd7 11.Nc3+=) 10...e4–/+ 11.Bg7 (11.Nd4 Qg5 12.Kf1 0–0–/+) 11...Rg8–+ 12.Bb2 (12.Bd4 ef3 13.Qf3 Be6 14.Be6 fe6 15.Qh5 Rg6 16.Bb6 Qb6–/+) 12...Nb4 13.Kf1 Nd3 (13...Bg4 14.h3 Bh5+=) 14.Qc2? (better is 14.Bd4 ef3 15.Qf3–/+) 14...ef3 15.Qd3 (15.g3 Bf5 16.Kg1–+) 15...fg2 16.Kg1 gh1Q (16...Qh4 17.Be5 Be5 18.Qb5 Nd7 19.Bf7 Ke7 20.Qb4 Qb4 21.Nc3 Kf7 22.e4 Qd6 23.Nd1 Qh6 24.f4 Qf4 25.Ne3 gh1Q 26.Kh1 Qh2) 17.Kh1 Qh4 (17...Qh4 18.Qh7 Qh7 19.Bf7 Kf7 20.Be5 Qe4 21.f3 Qf3#) 0–1. Yeung,Chun Keung (1740) – Vegjeleki,Adolf (2310), corr ICCF WSTT/3/06/1, 2006.

7.d4 0–0 8.Bb5?? Qa5–+ 9.Nc3 Ba3 10.Qc1 Bb2 11.Qb2 Ne4 12.Bc6 bc6 (worse is 12...Qc3 13.Qc3 Nc3 14.Ne5 bc6 15.f3–+) 13.0–0 (13.Ne5 Rb8!! (worse is 13...Nc3 14.Nc6 Qc7 15.Qc3–+) 14.Nc6 Rb2 15.Na5 Nc3–+) 13...Qc3 14.Qc3 (14.Rfb1 Qa5–+) 14...Nc3 15.Ne5 Rb8 16.Nc6 Rb2 17.Ne7 Kh8 18.h3 (18.Nc6–+) 18...Bd7 19.a3 Re8 20.Nd5 ed5 21.Rfe1 Rc2 22.Kf1 (22.Rf1 Rb8 23.Kh2 Rd2–+) 22...Rb8 23.Rac1 (23.Rec1 Bb5 24.Ke1 Re2 25.Kf1 Rb2 26.Kg1 Ne2 27.Kh2 Nc1 28.Rc1 Rf2 29.Kg3–+) 23...Bb5 24.Kg1 Rc1 (24...Rc1 25.Rc1 Ne2 26.Kh2 Nc1–+) 0–1. nerob (2055) – pcmvr, net–chess.com, 2015.

7.d4 0–0 8.Bd3 Qb6 9.Qc1 Bd7 10.Ba3 Nb4 11.Bb4 Qb4 12.c3 (12.Nbd2!?–/+) 12...Qa5 13.0–0 Rfc8 14.Qd2 Rc7 15.Rc1 Rac8 16.Ng5? (16.Qe2!?–/+) 16...b5–+ 17.Qb2 (17.Rc2 b4 18.a4 bc3–+) 17...b4 18.e4 (18.a4–+) 18...bc3 19.Qc2 (19.Rc3 de4 20.Ne4 Ne4 21.Be4–+) 19...Bf4 20.e5 (20.Nh3 Ba4 21.Nf4 Bc2 22.Bc2 de4–+) 20...Bg5 21.ef6 (21.a4 Bc1 22.Qc1 Ne4–+) 21...Ba4 22.Bh7 Kf8 23.Qd3 Bc1 24.Qg3 gf6 0–1. preethan (2135) – pcmvr, net–chess.com, 2015.

7.Be2 0–0 8.0–0 e5 9.d4 e4 10.Ne5 Qc7 11.Nc6 (11.Nc3 Ne5 12.Nb5 Nf3 13.Kh1–/+) 11...Bh2= (< 11...bc6 12.h3=+; 11...Qc6?! 12.Ba3=+) 12.Kh1 bc6 13.g3 Bg3 14.fg3 Qg3 15.Rf6 (better is 15.Qe1!? Qh3 16.Kg1 Qe3 17.Qf2–+) 15...Qh4–+ 16.Kg1 Qf6 17.Bf1? (better is 17.Qd2–+) 17...Qg5 18.Bg2 Qe3 19.Kh2 Qh6 (20.Kg1 Qg6–+) 0–1. Adamowski,Andrzej – Furlepa,Zbigniew, corr 1. AMM Poland, 1991.

7.Be2 e5 8.0–0 0–0 =+.

7.Be2 e5 8.d3 Qc7 9.c4 dc4 10.dc4 Bf5 11.Nbd2 0–0 12.a3 Rad8 13.Qb3 Nd7 14.Nh4 Nc5 15.Qa2 Be6 16.0–0 (better is 16.Nhf3!?–/+) 16...e4–+ 17.g3 Bg3 18.hg3 (18.fg3 Rd2 19.Rf2–+) 18...Rd2 19.Rfe1 Rfd8 (19...Na4 20.Qb1 Rb2 21.Qe4–+) 20.Rac1 (20.a4 Nb4 21.Qb1 Nc2–+) 20...Na4 21.Rb1 (21.Qb1 Nb2 22.Qe4 Ne5–+) 21...Nc3!! 22.Qa1 (22.Bc3 Ra2 Pinning (22...Ra2 Deflection)) 22...Ne2 23.Re2 Re2 24.Bg7 f6 (24...Red2 25.Qf6 Rd1 26.Rd1 Rd1 27.Kh2–+) 25.Bf6 (25.Qf6 Bc8 (25...Bc4 26.Nf5 Qg3 27.fg3 Rg2 28.Kg2 h6 29.Bh6 Rd2 30.Kh1 Rd7 31.Qg6 Kh8 32.Bg7 Rg7 33.Qg7) 26.Bh6 Qe5–+) 25...Qf7 (25...Rdd2!? 26.Rb5 Rf2 27.Rg5 Kf8 28.Bg7 Ke8 29.Bc3–+) 26.Rb5 h6 (26...Nd4 27.Rg5 Kf8 28.Bg7 Ke7 29.Qf1 Nf3 30.Nf3 Qf3 31.Bd4–+) 27.Ng2 (27.Nf5 Bf5 28.Bd8–+) 27...Red2 28.Kh2 Rf8 (28...R8d7 29.Bc3 Rf2 30.Be1 Rg2 31.Kg2 Qf3 32.Kh2 Qe2 33.Kh1–+) 29.Qe1 Rd6 30.Bh4 Qf2 31.Qf2 Rf2 32.Kg1 Rf1! 33.Kf1 Bc4 34.Ke1 Bb5 35.Nf4 Kf7 36.g4 Ne5 37.Nh5 Nc4 38.Bg3 Rg6 39.Bf4 Na3 40.Ng3 Bc6 41.Nf5 b5 42.Nh6 Kf6 43.g5 Rg5 44.Bg5 Kg5 45.Nf7 Kf5 46.Nd8 Bd5 47.Kd2 a5 48.Kc3 Ke5 (48...Ke5 49.Kd2 Nc4 50.Kc2 Ne3 51.Kd2 Nc4 52.Kd1 a4–+) 0–1. Kalka,M – Habant,O, Bochum Post op, 1990.

7.c4 0–0

8.Nc3 Bb4 9.Be2 (9.a3 Bd6=) 9...dc4=+ 10.Bc4 e5 11.0–0 (11.Rc1 e4 12.Ng5 Qe7=) 11...Bg4 12.Qb3 Bf3 13.gf3 Qe7 (13...a6 14.Rfd1=+) 14.Be2 (14.a3 Bc3 15.Qc3 Rfd8–/+) 14...Nd7 (14...Rfd8 15.Rfd1–/+) 15.Nd5=+ Qd6 16.Nb4 Nb4 17.d4 ed4 18.Rad1 Nc6 19.Bd4 (19.Qb7?? Rab8 20.Qa6 Qg6 21.Kh1 Rb2 22.ed4 Ndb8–+; 19.ed4 Rfe8 20.Rfe1 Rad8=+) 19...Qg6 20.Kh1 Nd4 21.Rd4 Nc5 22.Qc3 (22.Qb2 Qf6=) 22...Ne6 23.Rg4 Rac8 24.Qe5 (24.Qc8! Rc8 25.Rg6 hg6 26.Bd3=) 24...Qc2–/+ 25.Bd1 Qa2 26.f4 f6 27.Qh5 f5 28.Rg3 b5 29.Rfg1 Rc7 30.e4 Nf4–+ 31.Qh6 Ng6 32.Qh5 Qe6 33.Rh3+= Rf6 34.Qh7 Kf8 35.Bb3 Rc4 36.e5 (The passed pawn on e5 will quickly become a dangerous weapon) 36...Qc6 37.f3+/– Re6 38.Bc4 bc4 39.Rhg3 Kf7+/– 40.h4 f4+– 41.R3g2 Qf3+= 42.Kh2 Ne7?? 43.Qg7 Ke8 44.Qh8 Kd7 45.Rd2 Nd5 46.Qa8 Re5 47.Rg7 (47...Kd6 48.Qb8 Kc6 49.Rg6 Kc5 50.Qc8 Kb4 51.Qb7 Nb6 52.Qf3+–; 47.Qa7 Kd8 48.Rg8 Re8 49.Qb8 Kd7 50.Qe8 Kc7 51.Qc8 Kd6 52.Rg6 Ke7 53.Qe6 Kd8 54.Rd5 Qd5 55.Qd5 Ke7 56.Qe6 Kd8 57.Qf7 c3 58.Rg8#) 1–0. Kossobudzki,Robert – Buczinski,Henryk, corr 2. AMM, Poland, 1994.

8.Nc3 Bd7 9.Rc1 dc4 10.Bc4 Na5 =+.

8.Nc3 Bd7 9.Be2 dc4 10.0–0 (10.Bc4 Na5 11.Be2 Rc8=+) 10...a6 (10...Ne5 11.Ne5 Be5 12.f4 Bc3 13.Bc3–/+) 11.d4 (better is 11.Bc4!? b5 12.Bd3=+) 11...b5–+ 12.Ne5 (12.Qc2 Nb4 13.Qb1 Nbd5–+) 12...Ne5 13.de5 Be5 14.Bf3 (14.f4 Bc7 15.Bf3 Rb8–+) 14...Rb8 (14...Rc8 15.a3–+) 15.Qc2 b4 16.Na4 (16.Ne4 c3 17.Bc1–+) 16…Ba4 (17.Qa4 Bb2–+) 0–1. gtate (1920) – michbarc (2520), net–chess.com, 2005.

8.d4 b6 =+.

8.d4 dc4 9.Bc4 a6 10.0–0 +=.

8.cd5 ed5 9.Be2 Be6 10.0–0 Nd7 11.Nc3 a6 12.a4 Na5 (12...Rc8 13.Rc1=) 13.d3 Nc5 14.Ba3 Ncb3 15.Bd6 Qd6 16.Rb1 Nc5 (16...Qc6 17.Rb3 Nb3 18.Qb3=) 17.Qd2 (17.Qc2 Rfc8+=) 17...b6 (17...Nab3 18.Qd1 Na5 19.d4+=) 18.Rb2 (18.Qb2 Nab3=) 18...Bd7 (18...Nab3 19.Qc2 Na5 20.d4+=) 19.Bd1 (19.Rfb1 Rfb8 20.Qc2 Qg6+=) 19...Rab8 20.Bc2 Rb7 (better is 20...Rfc8=) 21.d4+/– Ne6 22.Qd3 (22...f5 23.Qa6+/–) 1–0. Gruszczynski,Boleslaw – Laber,Seweryn, corr 1. AMM Poland, 1991.

8.cd5 Nd5 9.Be2 (9.Nc3 a6=) 9...Bd7 (9...e5 10.Nc3 Nde7 11.Bc4=) 10.0–0 (10.Nc3 Qe7=) 10...Rc8 11.Nc3 Nf6 12.Nb5 White threatens to win material: Nb5xd6 12...Be7 13.Nbd4 a6 Covers b5 14.Rc1 Qa5 Black threatens to win material: Qa5xa2 15.Qb3 Nd4 16.Bd4 (16.ed4 Inferior is 16...b5–/+) 16...Bc6 17.Bc3 White threatens to win material: Bc3xa5 17...Qd8 18.Qb2 b5 19.Ne5 Bd5 20.Bf3 Bf3 21.Nf3 Qd5 22.Bd4 h6 Controls g5 23.h3 Covers g4 23...Rfd8 24.Rc2 Rc2 25.Qc2 Qb7 26.Rc1 Nd5 27.Qe4 Rc8 Black threatens to win material: Rc8xc1 28.Qb1 Rc1 29.Qc1 Qc7 30.Qc7 Nc7 31.e4 f6 Prevents intrusion on e5 32.Kf1 Kf7 33.Bb6 White threatens to win material: Bb6xc7 33...Ne8 34.Ke2 Nd6 35.d3 Consolidates c4+e4 35...e5 White has a new backward pawn: d3 36.Nd2 Nb7 37.Nb3 Ke6 38.Kd2 Kd6 39.Kc2 Kc6 40.Be3 a5 41.f3 a4 Black gains space 42.Nd2 Na5 43.Nb1 b4 44.Nd2 Bc5 Black threatens to win material: Bc5xe3 45.Nf1 Kb5 46.Bc5 Kc5 A knight endgame occured 47.Ne3 b3 48.ab3 ab3 49.Kc3 Kb5 50.Nf5 White threatens to win material: Nf5xg7 50...Ka4 51.Kb2 Nb7 52.d4 ed4 53.Nd4= Nc5 54.g3 Kb4 55.Nc6 Kc4 56.Na5 Kd3+= 57.Nc6 Kc4 58.Na5+= Kd3 Twofold repetition 59.Nc6 Ke3 60.e5 fe5 61.Ne5 Ne6 0–1. Ferreyra,Dardo (1995) – Nunez,Hiber (2085), Montevideo CC Modelo Viernes op, 2002.

8.Be2 dc4 9.Bc4 a6 10.d4 =+.

8.Be2 Re8 9.0–0 (9.cd5 Nd5 10.Qb3 Na5=+) 9...e5 10.cd5 (10.d4 e4 11.Nfd2 Qc7=+) 10...Nd5 11.Nc3 Nc3 12.Bc3 e4 13.Ne1 (13.Nd4 Nd4 14.Bd4 Qh4=+) 13...Qh4 14.f4 ef3 (14...Qe7!?=+) 15.Nf3= Qh6 16.Qe1 (16.Qb3 Re7=) 16...Re4 (16...Bg4 17.h3 Be6 18.Qh4 Qh4 19.Nh4=) 17.Qf2= Bg4 (17...Rb8 18.a4=) 18.g3 (18.h3 Be6=) 18...Bh3 19.Rfb1 b6 20.Rb5 (better is 20.Bd3 Re7 21.Nh4=) 20...Bc5–/+ 21.Nd4 a6 (21...Bd4 22.ed4 Rd8 23.Rh5+=) 22.Rb3 Ne5 23.Nc2 Ng4 24.Bg4 Rg4 25.Bd4 Bd4 26.Nd4= Rc8 27.Rab1 b5 28.Qf3 Rg6 29.Rc3+/– Re8 30.Rbc1 Rf6 31.Qb7 Qg6 32.Rc6 (32.a3 Rb6 33.Qf3 Bg4=) ½–½. Jeschke,Holger – Haserodt,Jan, Schleswig Holstein–ch cand–A, 1997.

8.Nc3 a6

9.Be2 dc4

10.Bc4 b5 11.Be2 Bb7 12.0–0 Rc8 13.Rc1 Ne7 14.a3 Qa5 15.Nb1 Rc1 16.Qc1 Rc8 17.Bc3 Qc7 18.h3 Ned5 19.Qb2 Nc3 20.Nc3 e5 21.Bd1 Qe7 Black prepares the advance e4 22.Nb1 e4 23.Ne1 Be5 24.Qa2 Rc1 25.Bb3 Qc7 26.g4 h5 27.g5 Bc8 28.Kg2 Qd7 29.Rh1 Qf5 30.Bf7 Kh7 31.d4 (31.g6 Kh8 32.Qc2 Rc2 33.Nc2 Qf3 34.Kg1 Bh3 35.Rh3 Qh3 36.Be6 Bh2 37.Kh1 Ng4 38.Bg4 hg4 39.Nd4 Bg3 40.Kg1 Qh2 41.Kf1 Qf2) 31…Re1! (31...Re1 32.Bg8 Kh8 33.f4 ef3 34.Kf2 Bg3 35.Kg3 Ne4 36.Kh2 Qh3#; 31...Qg5 32.Kf1 Bd4 33.ed4 Re1 34.Ke1 Qc1 35.Ke2 Qh1 36.Nd2 Qh3 37.Ke1–+) 0–1. Partikas,Valentinas A (2325) – Mielke,Klaus (2520), corr ICCF W–24ch sf12, 2000. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c5 5.bc6 Nc6 6.e3 Bd6 7.c4 0–0)

10.Bc4 Ne5

11.Bb3? Nd3–+ 12.Kf1 (12.Ke2 Nb2 13.Qc2 Na4 14.Na4 Bd7–+) 12...Nb2 13.Qc2 Na4! 14.Na4 (14.Ba4 b5 Decoy; 14.Na4 Bd7 Combination) 14...Bd7 15.Nd4 Rc8 16.Qb1 Be5 17.Nb2 (better is 17.Nc3–+) 17...Bd4 18.ed4 Bb5 19.d3 Qd4 20.f3 Rc3 21.Bc2 (21.Ke2–+) 21...Rfc8 (21...Rfc8 22.Bd1 Rd3 23.Nd3 Bd3 (23...Qd3?! 24.Qd3 Bd3 25.Kf2+=) 24.Qd3 Qd3 25.Be2 Qd2–+) 0–1. ulla (1670) – nextdoor (1620), gameknot.com, 2014.

11.d3 A) 11...b5 12.Bb3 (12.Ne5 Be5 13.Bb3 Bb7 14.d4 Bd6 15.0–0 Rc8 16.Rc1 b4 17.Na4 Rc1–/+) 12...Bb7 13.Ne5 Be5 14.d4 Bc7 15.0–0 Qd6 16.f4 b4 17.Na4 Rfc8+=; B) 11...Nc4 12.dc4 Qc7 13.Qe2 b6 14.e4 Bb4 15.a3 Ba5 16.Nd2 Bb7 17.0–0 Rac8+=.

11.Qe2 A) 11...b5 12.Bb3 (12.Ne5 Be5 13.d4 Bd4 14.ed4 bc4 15.Qc4 Bb7 16.0–0 Rc8 17.Qd3 Nd5–/+) 12...Bb7 13.Ne5 Be5 14.d4 Bc7 15.0–0 Qd6 16.f4 Rac8 17.Rac1 Bc6+=; B) 11...Nc4 12.Qc4 b5 13.Qc6 Ra7 14.Ne4 Ne4 15.Qe4 Rc7 16.d3 Bb7 17.Qd4 f5–/+.

11.Be2 A) 11...Neg4 12.Rc1 (12.h3 Nh6 13.e4 e5 14.d4 Qb6 15.Rb1 ed4 16.Nd4 Rd8 17.0–0 Bc7+=) 12...b5 13.h3 Nh6 14.0–0 Bb7 15.d4 Rc8 16.Qb3 Nd5 17.a4 Nc3+=; B) 11...Ng6 12.0–0 (12.Rc1 b5 13.0–0 Bb7 14.d4 Rc8 15.Qb3 Qe7 16.Rfd1 Rfd8 17.h3 Nd5+=) 12...b5 13.Rc1 Bb7 14.d4 Rc8 15.Qb3 Qe7 16.Rfd1 Rfd8 17.h3 Nd5+=.

11.Ne5 Be5 12.Qf3 (12.d4= Bd6 13.Bd3 b5 14.Qf3 Rb8 15.Rc1 Bb7 16.e4 Qa5 17.0–0 b4–/+) 12...Bd7 13.d4 Bc6 14.Qh3 Bd6 15.Bd3 b5 16.0–0 b4 17.d5 bc3 =.

11.Bf1 A) 11...Ng6 12.Bd3 (12.Rc1 b5 13.Bd3 Bb7 14.Bg6 fg6 15.d3 Qd7 16.e4 Rac8 17.Qb3 Rc7+=) 12...b5 13.Ne4 Ne4 14.Be4 Rb8 15.0–0 f5 16.Bc2 Bb7 17.Bb3 Re8=; B) 11...Ned7 12.d4 (12.Rc1 b5 13.d4 Bb7 14.Bd3 Rc8 15.Qb3 e5 16.de5 Be5 17.Bf5 Bf3+=) 12...b5 13.Bd3 Bb7 14.Rc1 Rc8 15.Qb3 e5 16.de5 Be5 17.Bf5 Bf3+=.

8.Nc3 dc4

9.Bc4 Ne5 10.Be2 a6 11.0–0 b5 (11...Nc6 12.Rc1=) 12.d4 (12.Nb5!? ab5 13.Be5+=) 12...Ng6 13.Ng5 Bb7 14.Bd3 Qe7 15.Qb3? (15.f4 Rfc8=) 15...Rfd8 (15...Ng4 16.Be4 Bh2 17.Kh1 Qg5 18.g3 Bg3 19.fg3 Qh6 20.Kg2 Ne3 21.Kf2 Be4 22.Ne4 Nf1 23.Rf1–+) 16.Nge4 (16.f4!?+=) 16...Ne4–/+ 17.Be4 Be4 18.Ne4 Bh2! 19.Kh2 Qh4 20.Kg1 Qe4 21.a4 ba4 22.Ra4 Rdb8 23.Qa3 h5 24.f3 Qc2 25.Rb4 a5 26.Rb8 Rb8 27.Ba1?? (better is 27.Rf2 Qb3 28.Qd6–+) 27...Nh4 28.Rf2 (28.Qa2 Qa2 29.Bb2 Rb2 30.Kh2 Rg2 31.Kh3 Rh2 32.Kg3 g5 33.d5 Nf5) 28...Rb1 (28...Rb1 29.Kh2 Qf2 30.Qf8 Kf8 31.d5 Qg2) 0–1. Novikov,Konstantin Ivan (2215) – Airapetian,Nikita (2085), Voronezh op–B, 2007.

9.Bc4 a6

10.a4 =+.

10.Rc1 +=.

10.d4 b5

11.Bd3 Bb7

12.e4 Nb4

13.Bb1 Bf4 14.Ba3 Qa5 15.Qb3 Bd6 16.0–0 Rfc8 17.Bb2 Ng4 18.h3 Nh6 19.Rd1 Rab8 20.d5 Rc7 21.a3 Nd5 22.ed5 +– (22.Nd5?! ed5 23.ed5 Re8=).

13.Bb1 Bf4 14.Ba3 Qa5 15.Qb3 Bd6 16.0–0 Rfc8 17.Bb2 Ng4 18.h3 Nh6 19.Rd1 Qc7 20.d5+= ed5 21.ed5 Qc4 22.Qc4 Rc4 23.a3 Rc3 24.ab4 Rb3 25.Ba3 a5 =+.

13.Bb1 Bf4 14.Ba3 Qa5 15.Qb3 Bd6 16.0–0 Rfc8 17.Bb2 Ng4 18.h3 Nh6 19.Rd1 Qc7 20.d5+= ed5 21.ed5 Qc4 22.Qc4 Rc4 23.a3 Rc3 24.ab4 Rb3 25.Be5 Rd8 =+.

13.Bb1 Bf4 14.Ba3 Qa5 15.Qb3 Bd6 16.0–0 Rfc8 17.Bb2 Ng4 18.h3 Nh6 19.Rd1 Qc7 20.d5+= ed5 21.ed5 Qc4 22.Qc4 Rc4 23.a3 Rc3 24.Bc3 Nd5 25.Ba5 Bc7 26.Bc7 Nc7 27.Ng5 f5 28.Ba2 Kh8 29.Rd7 Rc8 30.Rad1 Ne8 31.Rb7 Ra8 32.Rbd7 f4 +–.

6.Nf3 Bd7

7.Nc3 a6 8.Be2 Bd6 9.0–0 0–0 (9...e5 10.a4+=) 10.d4 (10.a4 e5+=) 10...Qc7 11.Bd3 (11.Nb1 Rfc8+=) 11...e5 (better is 11...Rac8–/+) 12.Ng5? (better is 12.e4!? de4 13.Ne4 Ne4 14.Be4 ed4 15.Qd3+=) 12...e4 (12...ed4 13.Ne2–+) 13.Nd5 (13.Nh7!? Bh2 14.Kh1 Kh7 15.Nd5 Nd5 16.Be4 Kg8 17.Bd5–/+) 13...Bh2 14.Kh1 Nd5 15.Be4 (15.Ne4 f5 16.Bc4 Nce7–+) 15...Nf6 16.Bh7 Nh7 17.Nh7 Kh7 (17...Rfe8 18.Ng5 Bd6 19.Qd3–/+) 18.Qh5–/+ Kg8 19.Qh2 Qh2 (19...Qc8 20.c4–/+) 20.Kh2 Bf5 (20...Rfc8 21.c4–/+) 21.d5 (21.c4 Rfd8–/+) 21...Nb4 (21...Na5 22.f3 Rfc8–/+) 22.c4 (22.Ba3!? Nc2 23.Bf8 Na1 24.Bg7–/+) 22...Nd3 (22...Rfc8 23.a3 Nd3 24.Ra2–+) 23.Ba3 (23.Bd4 Rac8–+) 23...Rfe8 (23...Rfc8 24.c5–+) 24.g4 (24.Rab1–+) 24...Bg4 25.Rg1 (25.f3 Bh5 26.e4 Rac8–+) 25...Bf5 (25...Re4 26.Rab1–+) 26.Rg5 Bg6 27.f4 Re3 28.Rag1 Nf4 29.R5g3 Rae8 30.Re3 Re3 31.Bc1 Re2 32.Kg3–+ Nh5 33.Kf3 Rc2 34.d6 Nf6 (34...Nf6 35.Bg5 Rc3 36.Kg2 Be4 37.Kf2 Nd7–+; 34...Ra2? 35.d7 Ra4 36.d8Q Kh7 37.Qc7+–) 0–1. Langguth,Wilhelm – Braune,Herbert, corr ICCF–Cup8/9 V186, 1990.

7.Nc3 e5 8.d4 e4 9.Ne5 +=.

7.c4 dc4 8.Bc4 Be7. mgilbert (2375) – chaman, net–chess.com, 2015.

7.Ne5 Qb6 8.Nd3 Be7 =.

6.Nf3 Be7

7.Bb5 Bd7 8.Bc6 bc6 9.Nc3 (9.0–0 0–0+=) 9...0–0 10.0–0 c5 11.Ne5 Qc7 Black prepares the advance c4 12.Nd7 Qd7 13.d4 (13.Rb1!?+=) 13...Rfc8 14.Ne2 c4 15.c3 Rab8 16.Rb1 Rb6 17.Ba1 Rcb8 18.Rb6 Rb6 19.Qc2 Qb7 20.Kh1 h6 21.Ng1 Ba3 22.Nf3 Bb2 23.Bb2? (better is 23.Nd2–/+) 23...Rb2–+ 24.Qc1 (24.Qa4 Ne4 25.Qe8 Kh7–+) 24...Ra2 25.Nd2 (25.Ne5 a5 26.f3 a4–+) 25...Qb5 (25...a5 26.f3–+) 26.Qb1 (26.Kg1 a5–+) 26...Rb2 (26...Qb1 27.Nb1 (27.Rb1?? Rd2 28.f3 Rc2–+) 27...a5 28.Kg1–+) 27.Qc1 a5 28.Nb1 (28.e4–+) 28...Qb3 29.Nd2 (29.f3 Qa2 30.Rg1 a4–+) 29...Qa2 30.Rd1 (30.Nf3–+) 30...Rc2 31.Qb1 Rd2 32.Rf1 (32.f3 a4 33.Rc1 Qb3–+) 32...Ne4 0–1. Melzig,Ernst – Kranch,Klaus, 2rd Berlin Germany, Senior Championship, 2010.

7.c4 0–0 8.Nc3 dc4 9.Bc4 e5 =+.

7.c4 0–0 8.cd5 Nd5 9.Nc3 a6 10.a3 b5 11.Rc1 Bb7 12.Nd5 Qd5 13.Be2 Rac8 14.0–0 Rfd8 15.d4 Na5 16.Rc8 Rc8 17.Qb1 Nc4 18.e4? Qe4–+ 19.Bd3 Qg4 20.Bh7 Kh8 21.h3 Qh5 22.Be4 Be4 23.Qe4 Nb2 24.Qb7 Re8 25.Qd7 f6 26.Qe6 Ba3 27.Qa6 b4 28.Rc1 Qg6 29.Ne5 Qh5?? 30.Ng4?? Qg5 31.Rc5?! Qf4 32.Rh5?! Kg8 33.Ne3 Qd4 34.Qb5 Rc8 35.Nd5 Qa7 36.Nb4 Qf7 37.Nc6 Rc6! 38.Qc6 Qh5 39.Qe6 Kh7 40.Qb3 Qd1 41.Qd1 Nd1 42.Kf1 Kg6 43.Ke2 Nc3 44.Kd3 Bb4 45.g3 Kf5 46.f3 Bd6 47.g4 Kf4 48.Kc3 Kf3 49.Kd3 Kg3 50.Ke4 Kh3 51.Kf5 Be5 52.g5 Kh4 53.gf6 gf6 54.Ke4 Kg4 55.Ke3 f5 56.Kf2 f4 57.Kg2 f3 58.Kf2 Kf4 59.Kf1 Kg3 60.Kg1 f2 (61.Kf1 Bg7–+) 0–1. Paggalis,G – Georgiadis,Ioannis, Patras op 3rd, 2001.

7.c4 0–0 8.Be2 a6 9.a4 dc4 10.Bc4 Na5 11.Be2 Nd5 12.0–0 Bd7 13.Nc3 Rc8 14.Nd5 ed5 15.Qb1 Nc4 16.Bd4 b5 17.ab5 Bb5 18.d3 Na3 19.Qb3 Nc2 20.Rac1 Nb4 21.Ba1 a5 22.Nd4 Ba6 23.Nf5 Bf6 24.Rc8 Bc8 25.Nd4 Qd7 26.Rc1 Ba6 27.h3 Rc8 28.Rc8 Qc8 29.Qa4 Qc1 30.Kh2 Qc7= 31.g3 h6 32.Qe8 Kh7 33.Bh5 Qe7 34.Qe7 Be7 35.Bf7 Bf6 36.Bc3 Bd3 37.Kg2 Bc4 38.Ne6 Bd3 39.Bb4 ab4 40.Nf8 Kh8 41.Ng6 Bg6=+ 42.Bg6 b3 43.f4 d4 44.ed4 Bd4 ½–½. Kaczorowska – Petek, Naleczow, 1985.

7.Be2 Qb6 8.Qc1 Bd7 9.c4 Rc8 10.Nd4 (better is 10.Na3!?=+) 10...dc4–/+ 11.Bc4?? (better is 11.Nc6 Bc6 12.0–0–/+) 11...Ne5–+ 12.Na3 (12.Nc6 Qc6 (12...bc6?! 13.Be5 0–0 14.0–0=; < 12...Rc6 13.Be5 Qc5 14.Qb2 Qc4 15.Nc3–+; < 12...Nc6 13.d3–+; 12...Bc6?! 13.Be5 Bg2 14.Rg1–+; 12...Nc4 13.Ne7 Ke7 14.Bf6 gf6 15.Nc3–+) 13.Be5 Qg2–+ (< 13...Qc4 14.Qc4 Rc4 15.Nc3–+)) 12…Nd3! (13.Bd3 Rc1 14.Bc1 e5–+) 0–1. gtate (1860) – ladybird (2290), net–chess.com, 2003.

7.Be2 Qc7 =+.

7.Ne5 Ne5 8.Be5 0–0 9.c3 (9.Qf3 Ne4=+) 9...Bd7 (9...Ne4 10.f3 Bd6 11.Bd6 Nd6 12.Qb3–/+) 10.Qc2 (10.Qf3 Qb6 11.Bd4 Qb2=+) 10...Qa5 (10...Ne4 11.d3 Bf6 12.Bf6 Nf6 13.Be2=+) 11.d4 (11.Be2 Bb5–/+) 11...Ba4 12.Qb2 Bc6 (12...Rac8 13.Bd3 b5 14.0–0=+) 13.Bd3 Nd7 14.Bg3 Nb6 (14...a6 15.Nd2=+) 15.0–0 Na4 (15...Rac8 16.Re1=+) 16.Qc2 Bb5 17.Bh7 Kh8 18.Bd3 Rac8 19.Bb5 Qb5 20.Na3 (20.Qb3!? Nc3 21.Nc3 Qb3 22.ab3 Rc3 23.Ra7 Rb3 24.Rfa1=) 20...Ba3=+ 21.Rab1?? (better is 21.Qb3 Qb3 22.ab3 Nc3 23.Ra3 Ne2 24.Kh1 Ng3 25.hg3=+) 21...Qd7 (21...Rc3 22.Rb5 Rc2 23.Rb3–+) 22.Rb3 Be7 23.Rfb1 Nb6 24.Ra1 Bd6 25.Bh4 Rc4 26.f4 Rfc8 27.Qe2 Rc3 28.Qh5 Kg8 29.Rc3 Rc3 30.Qf3 Nc4 31.Bf2 Nd2 32.Qd1 Ne4 33.Qe1 Rc2 34.Bh4 Be7 35.Qd1 Rc4 36.Be1 Qc7 37.a4 Rc2 38.a5 Rb2 39.g4 Qc2 40.Qc2 Rc2 41.g5 Re2 42.Kf1 Re3 43.Rc1 Rf3 44.Kg2 Rf4 45.Rc8 Kh7 46.Rc7 Bg5 47.Rb7 Nd6 48.Ra7 Rd4 49.Ra8 Ra4 50.Rd8 Nb7 51.Ra8 Be3 52.a6 Nd6 53.Bf2 Bf2 54.Kf2 Ne4 55.Ke3 Kg6 56.h4 Kf5 57.a7 e5 58.Kf3 d4 59.h5 f6 (60.Ke2 Ra2 61.Kd3 Ra3 62.Kc2 d3 63.Kb2 d2–+; 59...Ra2 60.Rd8 Rf2#) 0–1. pinecrest1981 – Hopalong, Live Game Caissa's Web, 2005.

7.Bb5 Bd7

8.0–0 0–0 9.d4 Qa5 A) 10.Be2 b5 (10...Rfc8 11.Nbd2 b5 12.a4 b4 13.Nb3 Qc7 14.c3 Na5 15.cb4 Nb3 16.Qb3+=) 11.Nbd2 Rfc8 12.a4 b4 13.Nb3 Qc7 14.c3 Na5 15.cb4 Nb3 16.Qb3+=; B) 10.Bd3 Nb4 (10...Rac8 11.Ne5 Bd6 12.c4 Qc7 13.Nd7 Nd7 14.cd5 ed5 15.Qh5 Nf6 16.Qh4=) 11.Qd2 Qb6 12.Ba3 Bd6 13.Ne5 Rfc8 14.Bb4 Bb4 15.c3 Bd6 16.c4+=.

8.0–0 0–0 9.d4 a6 10.Ba4 (10.Bc6 bc6 (10...Bc6 11.Ba3 Bb5 12.Re1 Ne4 13.Be7 Qe7 14.Nfd2 Rac8 15.Ne4 de4 16.Nd2=) 11.Ba3 Rb8 12.Be7 Qe7 13.Ne5 c5 14.Nd2 Rfc8 15.Re1 cd4 16.ed4+=; 10.Bd3 b5 (10...Rc8 11.Ba3 Nb4 12.Ne5 Ba4 13.Bb4 Bb4 14.Nd2 Qc7 15.Nb3 b5 16.Rb1+=) 11.Nbd2 Nb4 12.Ba3 Qa5 13.Bb4 Bb4 14.Nb3 Qc7 15.Ne5 Rfc8 16.Qe2+=) 10...b5 (10...Qa5 11.Bb3 b5 12.a4 Qc7 13.ab5 ab5 14.Ra8 Ra8 15.Qd3 Ra5 6.Nbd2+=) 11.Bb3 Ne4 (11...Qc7 12.Qe2 Bd6 13.Nbd2 Na5 14.Ne5 Nc4 15.Bc4 bc4 16.Ndf3–/+) 12.c3 (12.Nbd2 f5 13.Qe2 Qa5 14.Rab1 Rab8 15.Ne4 fe4 16.Ne5+=) 12...f5 (12...Qc7 13.Bc2 Rab8 14.Nbd2 f5 15.Nb3 Bd6 16.Qd3–/+) 13.h3 (13.a4 Na5 14.Ba3 Ba3 15.Ra3 Nc3 16.Nc3–/+) 13...Rb8 (13...Qc7 14.Qd3 Rac8 15.Rc1 Nd6 16.Ba3–/+) 14.Nbd2 (14.Qc2 Qc7 15.Ba3 Ba3 16.Na3–/+) 14...Nd2 (14...Qc7 15.Qe2 Bd6 16.Rab1–/+) 15.Qd2 Bd6 16.Nh2 (16.Rfb1+=) 16...Bh2 (16...Qf6!?–/+) 17.Kh2= Kh8 18.f3 Qg5 19.Qe2 Rbe8 20.a4 Na5 21.Bc2 Nc4 22.Bc1 Rb8 23.Bd3 Qf6 24.e4 Rfc8 25.g4 (25.ab5!? Bb5 26.Re1=) 25...ba4–/+ 26.gf5 Rb3 27.fe6 Qe6 28.Qg2 Rc3 29.ed5?? (better is 29.Rd1–/+) 29...Qd6–+ 30.f4 (30.Qg3 Rd3 31.Qd6 Nd6–+) 30...Rd3 31.Rg1 (31.Rf3 Rd4 32.Rg3 g6–+) 31...Rg8 (better is 31...Rh3!? 32.Qh3 Bh3 33.Kh3 Qd5 34.Rf1–+) 32.Re1 (32.Qe4 Rh3 33.Kg2 Qh6–+) 32...Rh3 33.Kg1 (33.Qh3 Bh3 34.Kh3 Qd5–+) 33...Rh4 (better is 33...g5 34.fg5 Rg3 35.Re2–+) 34.Kf2 Qf6 35.Re4 Bf5 (35...Nd6 36.Be3 g5 37.Rg1–+) 36.Ra4 (36.Re5 g5 37.Ra4 gf4 38.Qg8 Kg8 39.Re8 Kf7 40.Rc4 Rh2 41.Kf3 Qh4 42.Rc7 Ke8 43.Rc8 Kd7 44.Rc7 Kd8 45.Rc8 Kc8 46.Bf4 Qf2) 36...Be4 37.Qe4 Nd6 (37...Rh2 38.Kg1 Qh4 39.Qh7 Kh7 40.Ra2 Qg3 41.Kf1 Qf3 42.Ke1 Qh1) 38.Qe5 Qd8 (38...Rh2 39.Kf1 Qh4 40.Ra2 Ra2 41.Bb2 Rb2 42.Qe2 Qf4 43.Kg1 Re2 44.Kh1 Qc1) 39.Ra6 (39.Qe3 Qc8 40.Rb4 Qc2 41.Bd2 Rh2 42.Kg3 Nf5 43.Kh2 Ne3 44.Rc4 Qd2 45.Kg3 Qg2 46.Kh4 Qg4) 39...Nc4 (39...Rh2 40.Kf1 Qc8 41.Qe3 Qg4 42.Ke1 Qg2 43.Kd1 Qf1 44.Qe1 Qf3 45.Qe2 Qe2) 40.Qe4 (40.Qg5 Qg5 41.fg5 Rd4 42.Rc6–+) 40...Rh2 41.Kg1 Qh4 42.Qf3 Rh3 (42...Rc2 43.Bd2 Nd2 44.Qd3 Nf3 45.Qf3 Qh2 46.Kf1 Rc1 47.Qd1 Rd1) 43.Qe4 Rg3 44.Kf1 Qh3 (44...Qh2 45.Qh7 Kh7 46.Rh6 gh6 47.Be3 Ne3 48.Ke1 Rg1) 45.Ke2 Qh2 46.Kd1 Rg1 47.Qe1 Re1 (47...Qh5 48.Kc2 Re1 49.Ba3 Na3 50.Kb3 Rb1 51.Ka3 Qd5 52.Ra7 Qb3) 48.Ke1 Re8 49.Kd1 Qg1 (49...Qe2) 50.Kc2–+ Qd4 51.d6 Nd6 52.Kb3 (52.Rc6 Re2 53.Kb3 Qd3 54.Kb4 Re4 55.Rc4 Qc4 56.Ka3 Qc2 57.f5 Ra4) 52...Qc4 0–1. marinscrofan (1640) – agosoxo (1665), gameknot.com, 2009.

8.0–0 0–0 9.d4 Nb4 A) 10.c4 Rc8 (10...Bb5 11.cb5 Rc8 12.Nc3 Ne4 13.Qb3 Qa5 14.Ne4 de4 15.Nd2 Qb5 16.a3=) 11.Bd7 Qd7 12.Ne5 Qe8 13.c5 b6 14.a3 Nc6 15.cb6 ab6 16.Qb3+=; B) 10.a4 Ne4 (10...a6 11.Be2 Rc8 12.c3 Nc6 13.Nbd2 Kh8 14.c4 dc4 15.Nc4 Nd5 16.Qb3=) 11.c3 Nc6 12.Ba3 Nd6 13.Nbd2 b6 14.Bd3 Rc8 15.e4 f5 16.ed5=.

8.0–0 0–0 9.d4 Qb6 10.Nc3 (10.a4 a6 11.c4 ab5 12.cb5 Nb4 13.Ne5 Rfc8 14.Bc3 Rc7 15.Qb3 Qd6 16.Nd7–+) 10...a6 (10...Rfc8 11.Rb1 Qc7 12.Bd3 Nb4 13.Ne5 Nd3 14.cd3 b5 15.Rc1 Qa5 16.Nd7+=) 11.Bc6 Qb2 12.Bd7 Qc3 13.Ba4 b5 14.Bb3 Rfc8 15.Qe2 Bd6 16.a4 –/+.

8.0–0 0–0 9.d4 Rc8 A) 10.Bd3 Qc7 (10...Nb4 11.Ba3 Ba4 12.Bb4 Bb4 13.Qe2 a6 14.c3 Bd6 15.c4 dc4 16.Bc4+=) 11.Ba3 Ba3 12.Na3 Nb4 13.Qd2 Qc3 14.Rfb1 Qd2 15.Nd2 Nd3 16.cd3+=; B) 10.c4 Nb4 (10...dc4 11.Bc4 Na5 12.Bd3 Nc4 13.Qe2 Nb2 14.Qb2 Qc7 15.Ne5 Bd6 16.Na3=) 11.Bd7 Qd7 12.Ne5 Qe8 13.a3 Nc6 14.Nc3 Bd6 15.f4 dc4 16.Nc4=.

8.0–0 0–0 9.d4 Ne4 A) 10.Ba3 Nb4 (10...Nd6 11.Bd3 Rc8 12.Nbd2 Qa5 13.Bc5 b6 14.Bd6 Bd6 15.c4 Nb4 16.Be2+=) 11.Bd3 Nd3 12.Qd3 Nd6 13.Bd6 Bd6 14.Nbd2 Rc8 15.e4 Qc7 16.e5+=; B) 10.a4 Nd6 (10...Nb4 11.c3 Nc6 12.Ba3 Nd6 13.Bd3 Qc7 14.Nbd2 Rfc8 15.e4 b6 16.Qb1=) 11.Ba3 Qc7 12.Bd3 Rfe8 13.Nbd2 Rac8 14.c4 Nc4 15.Nc4 dc4 16.Bc4=.

7.Be2 0–0

8.0–0 a6 9.Ne5 +=.

8.0–0 b6 9.d4= Na5 10.Nbd2 Qc7 11.Ne5 (11.h3 Bd6=) 11...Nd7 (11...Ne4 12.Ne4 de4 13.f3+=) 12.Ndf3 (12.Nef3 Bb7=) 12...f6 (12...Ne5 13.de5 Bd7 14.Bd3+=) 13.Nd7 (13.Nd3 Nc4+=) 13...Bd7 14.Nd2 b5 15.e4 (15.g3 Rab8+=) 15...Nc4 (15...Bc6 16.ed5 Bd5 17.Re1+=) 16.Nc4+= dc4 (16...bc4 17.Bf3 c3 18.Bc1 de4 19.Be4+=) 17.c3 (17.g3 Rad8=) 17...Bc6 (17...Rab8 18.Qc2+=) 18.Bf3= Rad8 (18...f5 19.Qe2=) 19.Qe2 Rfe8 20.a4 (20.g3 Rb8=) 20...a6 (20...ba4 21.Qc4 Bd6 22.g3=) 21.ab5 (21.g3 ba4 22.Qc4 Bd6=) 21...ab5 22.Ba3 (22.g3 Qb7+=) 22...Ra8 (better is 22...Ba3!? 23.Ra3 b4+=) 23.Be7+= Qe7 24.Ra8 (24.Rfb1 Qb7+=) 24...Ra8= 25.e5 (25.Qd2 f5 26.d5 fe4 27.dc6 ef3+=) 25...Bf3 26.Qf3 Ra3 27.ef6 gf6 28.h3 f5 29.Qc6 Rc3 30.Re1 Kf7?? 31.d5+– e5 32.d6 Qf6 33.Qc7 Kg6 34.Rd1 1–0. Lorenc,Tomas – Rydl,Frantisek Jr (2135), CZE–chTV Czechia, 1998.

8.0–0 Qc7 9.Na3 +=.

8.0–0 Qc7 9.c4 Bd7 =.

8.0–0 Qc7 9.d4 a6 (9...Bd7 10.Nbd2+=) 10.Nbd2= b5 11.a4 b4 12.c4 a5 (12...bc3 13.Bc3 Rb8 14.Rc1=) 13.Qb3 Ba6 14.Rfc1 Qb7 15.Rc2 Rfc8 16.Rac1 dc4 (16...g6 17.Bd3=) 17.Bc4 (17.Nc4 Nd5+=) 17...Bc4= 18.Nc4 Nd7 (18...Rc7 19.Nfd2=) 19.Nfd2 Bf6?? (better is 19...Nf6+=) 20.Nd6+– Qa6 21.Nc8 Rc8 22.Ne4 (22.d5 Ne7 23.Rc8 Nc8 24.Bf6 Nf6+–) 22...Be7 (22...Ne7 23.Rc7 Qa8 A) 24.Rd7?! Qe4 25.Qc2 Qc2 (25...Rc2?? 26.Rd8) 26.Rc2 Ra8+–; B) 24.Qd3 Rc7 25.Rc7+–) 23.Qc4 (better is 23.d5!? ed5 24.Qd5 Ndb8+–) 23...Qc4 24.Rc4 f5?? (24...Ndb8+–) 25.Rc6 Rc6 26.Rc6 fe4 27.Rc7 Nb6 28.Re7 Na4 29.Bc1 Nc3 30.Kf1 a4 31.Rc7 Na2 32.Bb2 a3 33.Ba3! ba3 34.Ra7 h5 35.Ra3 Nb4 36.Ra5 g6 37.Re5 Kf7 38.h4 Nc6 39.Re4 Kf6 40.Rf4 Kg7 41.Ke2 Ne7 42.g4 hg4 43.Rg4 Kh6 44.Rg5 Nf5 45.Rf5! gf5 46.Kf3 Kh5 47.Kg3 Kh6 48.Kf4 1–0. Solari,Pablo – Bouza,Walter, 40th Aniversario Los Trebejos, 2012.

8.0–0 Bd7 9.c4 Rc8 10.d4 a6 11.c5= b5 12.Nc3 Re8= 13.a3 Qa5 ½–½. vairisk (2000) – amikhlin (2005), net–chess.com, 2001.

8.0–0 Nd7 9.d4 Nb6 10.Nbd2 Na4 11.Qc1 (11.Rb1 Nb2 12.Rb2 Qd6=) 11...Nb2 (11...Qa5 12.c4+=) 12.Qb2= b6 13.c4 Na5 (13...Bb7 14.Rab1=) 14.cd5 ed5 15.Rfc1 Bb7 (15...Qd6 16.Ne5=) 16.Ne5 (16.Nb3 Nb3 17.Qb3 Qd6=) 16...Qd6 (16...f6 17.Nd3=) 17.Rc2 f6 18.Nef3 (18.Nd3 Rac8=) 18...Rfc8+= 19.Rac1 Rc2 20.Rc2 Bc6 (20...Qe6 21.Bd3+=) 21.Nb3 Ba4 22.Nfd2 Qd7 23.Qc1 (23.Rc1 Nc6=) 23...Bd6 (23...Nc6 24.h3+=) 24.Bf3= Bb4 (24...Qe6!?=) 25.Rc7+= Qd6 (25...Qd8 26.Na5 Ba5 27.Nf1+=) 26.Na5 Bd2?? (26...Ba5 27.Ne4 Qd8 28.Ng3+/–) 27.Rc8 (better is 27.Nb7 Qe6 28.Qd2+–) 27...Kf7 (27...Be8 28.Qc7 Rc8 29.Qc8+= (29.Qd6?? Rc1 30.Bd1 Rd1)) 28.Qc7 (28.Nb7 Qd7 29.Bd5 Qd5 30.Rc7 Bd7 31.Qd2 Kg8+/–) 28...Qc7+= 29.Rc7 Ke6 30.Nb3 Bb3 (30...Bb4 31.Rg7 Rc8 32.g3+= (32.Rh7 Bb3 33.g3 Rc1 34.Kg2 Ba2–/+; 32.Ra7? Bb3 33.h4 Rc1 34.Kh2 Bc2–+)) 31.ab3 Kd6 32.Rg7 a5? (32...Rc8 33.g3 Rc1 34.Kg2+/–) 33.Rh7 (33.Rf7 Rc8 34.g4 Ke6+–) 33...a4 (33...Rc8 34.g4 Rc3 35.g5 fg5 36.Rh6 Kc7 37.Bd5+–) 34.ba4 Ra4 (34...b5 35.Rh6 Ke7 36.Bd5+–) 35.g3 Ra1 36.Kg2 Ra2 37.Be2 (37.Kf1 Ra1 38.Ke2 Ra2+–) 37...b5? (better is 37...Be3 38.fe3 Re2 39.Kf3 Ra2+/–) 38.Kf3+– (38.Bb5?! Be3 39.Rd7 Ke6=) 38...b4 39.Rb7 Bc3 (39...Kc6 40.Rb8+–) 40.h4 Kc6 41.Rf7 (41.Rb8 Kc7 42.Rb5 Kd6+–) 41...b3 (41...Ra3 42.Rf6 Kc7 43.Rf4+–) 42.Rf6 Kc7 (42...Kd7 43.h5 b2 44.Bd3+–) 43.Bd3 Rd2 (43...Be1 44.Kg2 Bd2 45.Rf3+–) 44.Bg6 Rd1 (44...Ra2+–) 45.Bc2 (better is 45.h5 b2 46.h6+–) 45...bc2–+ 46.Rf7 ½–½. Solari,Pablo (1660) – Magaldi,Nelson (2120), 2nd Coppa Latinoamericana, 2011.

8.0–0 e5 9.d4 (better is 9.Ne5!? Re8 10.Nd3+=) 9...e4+= 10.Ne5 Qc7 11.c4 Be6 12.Nd2 Nd7 13.cd5 Bd5 14.Nd7 Qd7 15.Qa4 a6 16.Qc2 Nb4 17.Qb1 Rac8 18.Rc1 Rc1 19.Bc1 Rc8 20.a3? (better is 20.Ne4 Nc2 21.Bd3 Na1 22.Bb2–+) 20...Nc2–+ 21.Ra2 (21.Bc4 Na1 (21...Bc4?! 22.Qc2 Bd3 23.Qd1–+; 21...Rc4?! 22.Nc4 Na1 23.Nb6–/+) 22.Bd5 Qd5 23.Qa1 Qa5–+) 21...Ba2 22.Qa2 Nd4 23.ed4 (23.Bc4 Ne6 24.Nf1 b5 25.Be6 Qe6–+ (worse is 25...fe6 26.Bd2–+)) 23...Rc1 24.Nf1 Qd4 0–1. madik – breizh2009 (1615), gameknot.com, 2008.

6.Nf3 g6

7.Bb5 a6 8.Bc6 bc6 =.

7.Nc3 Bc5 +=.

7.c4 Bg7 8.Be2 (8.cd5 ed5 9.Bb5 0–0=) 8...0–0 9.0–0 dc4 10.Bc4 Qc7 (10...Qb6 11.Bf6 Bf6 12.d4=) 11.Qe2 (11.d4 Nd5 12.e4 Qb6+=) 11...a6 12.a3 (12.Bf6 Bf6 13.d4 e5=+) 12...b5 13.Ba2 Bb7 14.d4 Ng4 (14...Rfc8 15.Rc1=) 15.h3?? (better is 15.d5 ed5 16.Bg7 Kg7 17.Qb2 d4 18.Rc1=) 15…Nd4!–/+ (16.ed4 Bf3 17.hg4 Be2–+) 0–1. Pagali,M – Stiri,Alexandra, GRE–chT Athens, 1996.

7.d4 Bd7 8.Bd3 Qb6 9.Qc1 Bd6 10.Ba3 Nb4 11.Nc3 Rc8 (11...Nd3?! 12.cd3 Rc8 13.Bd6 Qd6 14.Qb2=) 12.Rb1?? (better is 12.Bb2–/+) 12...Nd3–+ 13.cd3 Rc3! 14.Rb6 (14.Qc3 Qb1 Double attack (14...Qb1 Deflection; 14...Qb1 Remove defender; 14...Qb1 Overloading)) 14...Rc1 15.Bc1 ab6 16.0–0 (16.Ke2 Ke7–+) 16...Bb5 17.Rd1 Ke7 18.Ne5 Rc8 19.f3 (19.Bd2 Rc2–+) 19...Nd7 20.f4 Ba4 21.Rf1 Bc2 22.e4 de4 23.de4 Be4 24.g4 (24.Be3 f6 25.Nf3 Ra8–+) 24...Rc2 25.Re1 Bd5 26.Be3 Nf6 27.a4 (27.h3–+) 27...Be5 28.de5 Ng4 29.h3 Rg2 30.Kf1 Nh2 0–1. preethan (2135) – pierred (2850), net–chess.com, 2015.

5.d4 cd4

6.ed4 Qa5 7.Bc3 Bb4 8.Bb4 Qb4 9.Nd2 (9.c3 Qb2 10.Nd2 a6= (10...Qc3?? 11.Rc1 Qc1 12.Qc1+–)) 9...Ne4 (9...Qd4!? 10.Ngf3 Qc3–/+) 10.Ngf3+= Nc3 11.Qc1 Qa5 (11...Bd7 12.a3 Qa4 13.b6+=) 12.Bd3 (12.Nb3 Qc7=) 12...Nb5+= 13.Bb5 Qb5 14.Rb1 Qa6 15.Qb2 Nc6 16.Nb3 b6 17.Nbd2 0–0 18.Ra1 Re8 19.a4 (19.Ne5 Ne5 20.de5 Bb7–+) 19...Qb7 (19...e5!? 20.de5 Bg4 21.Qb5 Qb5 22.ab5 Ne5 23.Kd1–/+) 20.0–0–/+ Qc7 21.Qc3 Qd6 (21...Ba6 22.Rfe1–/+) 22.Rfe1 f6 23.Qb2 e5 24.de5 fe5 25.Rac1 e4 26.Nd4 (26.c4 Nb4 27.Qd4–/+) 26...Rf8 (26...Qf6!? 27.N2b3 Bd7–+) 27.Nc6+= Qc6 28.Re3 (28.c4 Bf5+=) 28...Qf6 (28...Qa4!? 29.c4–/+) 29.Qf6–/+ Rf6 30.g3 (30.c4!? Rc6 31.Ree1–/+) 30...Bh3 (30...Bb7 31.Nb3–+) 31.c3 (31.f4–+) 31...Raf8 32.Re2 Bg4 33.f3 ef3 34.Rf2 (34.Re7 f2 35.Kg2 Rc8–+) 34...Bh3 (34...Re8 35.Nb3–+) 35.c4 (35.Re1 Bg2–+) 35...dc4 36.Rc4 Bg2 37.Ne4 Re6 38.h4 Rfe8 39.Rg2 fg2 (39...Re4?! 40.Re4 Re4 41.Ra2–+) 40.Ng5 (40.Nc3–+) 40...Re2 41.h5 (41.Nh3 Ra2 42.Rc1 Ree2–+) 41...h6 42.Nh3 Rd8 (better is 42...Ra2!? 43.Nf2 Rf8 44.Rf4 Rf4 45.gf4 Ra4 46.Nd3–+) 43.Rc1 Rdd2 44.Nf4 (44.Kh2 Re4 45.Ra1 g1Q 46.Kg1 Re3–+) 44...Re3 45.g4 (45.Kh2 g1Q! 46.Kg1 Rg3 47.Kf1 Ra3–+) 45...Rg3 (45...Rf3 46.Ng6 Kh7 47.Nh4–+) 46.Re1 (46.Ng6 Kf7 (46...Rg4?! 47.Rc8 Kf7 48.Ne5 Kf6 49.Ng4 Kg5 50.Ne3–/+) 47.Nh4 Kf6–+) 46...Rg4 47.Ne2 (47.Nh3 Ra4 48.Nf2 a5–+) 47...Ra4 (47...Re4!? 48.Kg2 Rde2 49.Re2 Re2 50.Kh3–+) 48.Kg2 (48.Ng3 Raa2–+) 48...Raa2 49.Kf3 b5 (49...Re2!? 50.Rd1–+) 50.Nc3 (50.Nf4–+) 50...Rd3 51.Re3 Re3 52.Ke3 Ra3 53.Kd2 b4 (better is 53...Rc3 54.Kc3 g5 55.hg6–+) 54.Nb5 (54.Nd5 a5–+) 54...Ra2 (54...Ra5 55.Nc7–+) 55.Kc1 (55.Kd3 Ra5 56.Nd4 Rh5–+) 55...a6 (55...a5 56.Nc7–+) 56.Kb1 (56.Nd4 Ra5–+) 56...b3 (better is 56...ab5!? 57.Ka2 Kf7 58.Kb3–+) 57.Nc3 (57.Nd4 Rh2 58.Nb3 Rh5–+) 57...Rh2 58.Na4 (58.Ne4 Rh5 59.Nd6 a5–+) 58...Rh5 59.Kb2 (59.Nc3 Rh2–+) 59...Rb5 60.Nc3 h5 61.Nb5 (61.Ne2–+) 61...ab5 62.Kb3 h4 63.Kb4 h3 64.Kb5 h2 0–1. overtoom – pawn_starr, gameknot.com, 2013.

6.Qd4 a6 7.Qa4 +=.

6.Qd4 b6 7.f3 (7.c4 Bb4 8.Nc3 0–0=) 7...Be7 (7...a6 8.c4+=) 8.Nc3 (8.c4 0–0+=) 8...Nbd7 9.Qf4 (9.Qd2 a6+=) 9...Nc5 (9...0–0 10.Bd3+=) 10.e4 (10.Bd3 Bd6 11.Qg5 h6+=) 10...de4 (10...a6 11.ed5 ed5 12.ba6–/+) 11.fe4 (11.Rd1 Nd5 12.Nd5 ed5 13.Bg7 Rg8=) 11...Nh5 (11...Qd4!? 12.Nf3 Qb4+=) 12.Qe5 (12.Qg4 g6+=) 12...Bh4 13.Ke2 (13.g3 Qg5 14.Qd4 Qd8=) 13...Qg5 (13...Qf6 14.Qf6 Bf6 15.Ke3+=) 14.Qg5= Bg5 15.Nh3 (15.Nf3 Be7=) 15...Nf4 (15...Bf6 16.g4 Bc3 17.Bc3=) 16.Nf4= Bf4 17.g3 (17.Kf3 Be5+=) 17...Bh6 (17...Be5 18.Bg2+=) 18.Bg2= Bb7 Attacking the isolated pawn on e4 19.g4 (19.Rhd1 f5=) 19...0–0–0 (better is 19...f5+=) 20.h4? (better is 20.Rad1=) 20...Rd2–+ 21.Kf3 Rc2 22.Rab1?? (22.g5 Rb2 23.gh6–+) 22...Bd2 (better is 22...Rd8!? 23.Kg3 Rd3 24.Bf3 Rdc3 25.Bc3 Ne4 26.Be4 Rc3 27.Kf2 Be3 28.Ke2 Be4 29.Rhd1 Bb1 30.Rb1–+) 23.Ne2 Be4 24.Kg3 Bg2 (24...Rd8 25.Rhg1–+) 25.Kg2 f6 26.Kf3 Nd3 27.Bd4 Ra2 28.Ke4 Nc5 29.Bc5 bc5 30.b6 Ra4 31.Kf3 Ra3 32.Kf2 ab6 33.Rb6 Be3 34.Kf3 Bd2 35.Kf2 Be3 36.Kf3 e5 37.Ke4 Rd8 38.Rhb1 Rd7 39.Rb8 Kc7 40.R8b7 Kd6 41.Rd7 Kd7 42.Rb7 Kd6 43.Rg7 h6 44.Ng3–/+ Bf2 45.Nf5 Kc6 46.Nh6? Ra4–+ 47.Kf5 Rf4 48.Ke6 Bh4 49.Nf5 (49.Nf5 Bg5 50.Ne7 Kb5 51.Nd5–+). Fiedler – Fuchs, corr SOK–87–13, 1987.

6.Bd4 Bb4 7.Nd2 =+.

6.Bd4 Qc7 7.Bf6= gf6 8.c3 (8.Nd2 Bb4=) 8...Nd7 9.Nf3 Rg8 10.Qd3 (10.g3 Ne5=+) 10...f5 11.Nbd2 Bg7 (11...Nc5 12.Qc2=+) 12.Ne4?? (better is 12.Rc1=+) 12…fe4 –+. Waibel,Ulrich – Owens,Robert, compuserve, 1997.

5.f4 a6

6.a4 c4 7.Nc3 +=.

6.a4 Be7 7.Nf3= Nbd7 (7...0–0 8.Be2=) 8.c4 (8.Be2 b6=) 8...dc4 (8...0–0 9.cd5 ed5 10.Be2+=) 9.Bc4= Nb6 10.Be2 ab5 11.ab5 Ra1 12.Ba1 0–0 13.Nc3 Nbd5 14.0–0 Nc3 (14...b6 15.Nd5 ed5 16.Qc2=) 15.Bc3 Nd5 16.Bb2 (16.Qc2 Qb6=) 16...f6 (16...b6 17.Ne5=) 17.Qb3 (17.Qc2 Bd7+=) 17...Kh8 (17...Qd7 18.d4=) 18.d4+= b6 (18...Qc7 19.Rc1+=) 19.Bc4 Bb7 20.Rd1 (20.f5 Qd6 21.e4 Nf4 22.fe6 Be4 23.dc5 Qc5 24.Bd4 Qc7=) 20...Qc7 21.Kf2 (21.f5 cd4 22.Nd4 Rc8=) 21...Rc8= 22.g3? (better is 22.Rc1!?=) 22...cd4–/+ 23.Rd4 Bc5 24.Bd5 (24.Rd5 ed5 25.Bd5 Be3 26.Ke3 Qc5 27.Bd4 Qd5 28.Qd5 Bd5–+) 24...Bd4 (24...ed5?! 25.Ra4+=) 25.Be6?? (better is 25.Bb7 Qc2 26.Qc2 Rc2 27.Ke1 Bb2 28.Kd1 Rc1 29.Kd2–/+) 25…Qc2–+ (25...Qc2 26.Ke1 Bb2–+ (26...Qb2?! 27.Qb2 Bb2 28.Bc8 Bc8 29.Kd2–+; 26...Bf3?! 27.Qc2 Rc2 28.Bd4+=)) 0–1. Kuhlmann,Antonius Egidius J – Bello,W, corr, 1976.

6.Nf3 ab5 7.Bb5 Bd7 8.c4 dc4 9.Nc3 Bc6 (9...Bb5 10.Nb5 Nc6 11.Bf6 gf6 12.Qc2+=) 10.Ne5 (10.Bc4 Be7=) 10...Qb6 (10...Bb5 11.Nb5 Be7 12.Qf3=) 11.Nc4= Qc7 12.0–0 Nbd7 13.Bc6 Qc6 14.Ne5 Ne5 15.fe5 Nd7 16.Qh5 g6 17.Qh4 Bg7 (17...Ne5? 18.Ne4 f5 19.Nf6 Kf7 20.Be5+–) 18.Ne4 0–0 (18...Be5?? 19.Be5 Ne5 20.Qf6 Nf3 21.Rf3+– (21.gf3?! 0–0+–; 21.Qf3?! f5 22.Ng5 Qf3 23.gf3 Ke7+–)) 19.Nf6 Nf6 20.ef6 Ra4 21.d4 Bh8 22.Qh6 Rd8 23.Rf3 Rd5 (better is 23...cd4 24.Rh3 Bf6+=) 24.Qf4?? (24.Rh3 Bf6 25.Rf1–/+) 24...e5–/+ 25.Qe4 ed4 (25...b5 26.Rc1–/+) 26.ed4+= cd4?? (better is 26...h6+=) 27.Rc1+– Rc5 (27...Qc1 28.Bc1 Rd8 29.Qb7 Ra2+–) 28.Rc5 Qc5 (28...Qe4?? 29.Rc8 Qe8 30.Re8 mate) 29.Qe8 Qf8 30.Qa4 1–0. Bach,Matthias (2270) – Yildiz,Hasan2 (2025), Helsingor DEN, Politiken Cup, 2012.

6.Nf3 c4 +=.

6.Nf3 Be7 +=.

6.a4 ab5

7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 Nbd7 10.Be2 Qc7 11.0–0 Nb6 12.c4 (12.Qe1 Nbd7=) 12...Bd7 (12...Qe7 13.d3=) 13.Qe1 (13.Bf6 gf6 14.cd5 Nd5+=) 13...0–0 (13...Nc4 14.Bc4 dc4 15.Bf6 gf6 16.Nc3=) 14.Qh4 (14.Bf6 gf6 15.Qg3 Kh8+=) 14...Ra8 (better is 14...dc4 15.Bf6 gf6+=) 15.Nc3?? (better is 15.Bf6 gf6 16.Bd3 dc4 17.Qh7 Kf8 18.Bc4+=) 15...d4!–+ (15...dc4?! 16.Ne5+=; worse is 15...Nc4 16.Bc4 dc4 17.e4–/+) 16.Ng5 (16.Nd4 cd4) 16...dc3 (16...h6 17.Nge4 Be7 18.Qg3–+) 17.Bc3–/+ h6 18.Bd3? (18.Bf6 gf6 19.Ne4+=) 18...hg5–+ 19.fg5 Bh2 (19...Bh2 20.Qh2 Qh2 21.Kh2 Ng4 22.Kh3 Ne3 23.de3 Ra3–+) 0–1. Sternik,Ryszard – Treder,Edward, corr Poland, 1986.

7.ab5 Ra1 8.Ba1 g6 9.Nf3 (9.g4 d4 10.ed4 cd4+=) 9...Bg7 10.Ne5 (10.Be2 0–0=) 10...Nbd7 11.Be2 0–0 (11...Ne4 12.0–0=) 12.0–0 Ne5 (12...b6 13.Nc6 Qc7 14.g4=) 13.fe5 (13.Be5 b6=) 13...Nd7 14.d4 f5 (14...Qg5!? 15.Rf3 b6=) 15.c4+= cd4 (better is 15...dc4 16.Bc4 Nb6+=) 16.cd5 (16.ed4!? dc4 17.Bc4+=) 16...Ne5 (16...de3 17.de6 Ne5 18.Qb3–/+) 17.ed4= Nf7 (17...Ng4 18.de6 Be6 19.Qd3+=) 18.de6 Be6 19.Qd3 Qb6 20.Nd2 (20.Qe3 Bd5+=) 20...Rd8+= The pressure on the isolated pawn grows 21.Nf3 Bd5 22.Rd1 (22.Kh1 Nd6=) 22...Nd6 23.Rc1 Rc8 (23...Bf3 24.gf3 f4 25.Kh1+=) ½–½. Voboril,Pavel – Karlicky,P, Prague Bohemians, 1977.

6.a4 Bd7

7.Na3 c4 8.Nf3 Ba3 9.Ba3 ab5 10.ab5 Bb5 11.Nd4 Ba4 12.Qb1 (12.Be2 Nc6+=) 12...Nc6–/+ 13.Nc6 Bc6 14.Qb2 Ra4 15.Be2 Kd7 (15...Qa5 16.c3 Qd8 17.0–0–/+) 16.0–0 Qa5 17.c3 (better is 17.Qc1!?+=) 17...Ra8–+ 18.Bb4 Ra2 (18...Ra1?! 19.Ba5 R1a5 20.Qb6=) 19.Ra2 (19.Ba5? Rb2 20.Bb4 Ra6–+) 19...Qa2 20.Rb1 (20.Qc1 Ne4–+) 20...Ne4 21.d4 (21.Qa2 Ra2 22.d3 Nc3 23.Bc3 Re2–+) 21...Qb2 22.Rb2 Ra1 23.Bf1 Rd1 24.Re2 Ba4 25.Rf2 Nf2 26.Kf2 Kc6 27.g4 Rb1 0–1. Walzer,Heinz (1900) – Elstner,Eik (1890), Karl Mala mem op, 2004.

7.c4 Bd6 8.Nf3 +=.

7.c4 Ne4 8.Nf3= f6 (8...dc4 9.ba6 Na6 10.Bc4=) 9.Be2 (better is 9.d3 Nd6 10.Be2=) 9...Bd6?? (better is 9...dc4 10.ba6 Na6+=) 10.d3+– Qa5 11.Kf1 Qb4 12.Qc2 (12.Ba3!? Nc3 13.Qe1 Qb1 14.Rb1 Nb1 15.Qb1 ab5 16.cd5 b4 17.de6 Be6+–) 12...dc4 13.de4 ab5 14.Bc3 Qb3 15.Qb3 cb3 16.ab5 Ra1 (16...Ra2 17.Nfd2+–) 17.Ba1 0–0 (17...Rf8 18.Nbd2+–) 18.Nbd2 Rc8 19.Bc4 Kf8 20.e5 fe5 21.Ne5 Ke7 22.Nb3 b6 23.Nd7 Nd7 24.Bg7 Ra8 25.Kf2 Ra2 26.Kf3 e5 27.Rd1 Rc2 28.Bd5 Rc3 29.g3 Nf6 30.Bf6 Kf6 31.Nc1 c4 32.fe5 Ke5 33.Bc6 Bc5 34.Re1 Rc2 35.h4 Rh2 36.Ne2 (36.Ne2 c3 37.Nc3+–) 1–0. Kucharkowski,Jens – Kunze, Freital, 1986.

7.Nf3 c4 +=.

5.f4 b6

6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bb7 10.c4 dc4 11.Qa4 Nbd7 12.h4 Ne4 13.Bc4 Nd6 14.h5 h6 15.Bd3 Qc7 16.Na3 Nf6 17.Be5 Nd5 18.0–0 f6 19.Bg6 Kd7 20.Bb2 Be7 21.Rc1 Ra8 22.Qb3 Nb4 23.Nd4 Bd5 24.Qc3 Na2 25.Qc2 Nc1 26.Nf3 Na2 27.e4 Nb4 28.Qb1 Ba2 29.Qf1 c4 30.Qa1 Bb3 31.Nd4 Nc2 32.Ndc2 Bc2 33.Qe1 Qc5 34.Qe3 Qe3 35.de3 Bd3 36.e5 Ne8 37.Bd3 cd3 38.Nb1 fe5 39.Be5 Bf6 40.Nd2 Be5 41.fe5 Ra2 0–1. Dragoy – H H Lund, 1990.

6.Nf3 Bb7 7.d3 (7.Nc3 Nbd7=) 7...Nbd7 (7...a6+=) 8.c4 (8.Be2 Bd6+=) 8...Be7 (8...Bd6!?–/+) 9.Be2 Ng4 10.Qc1 Bf6 11.Nc3 (11.d4 cd4 12.ed4 dc4+=) 11...0–0 (11...d4 12.ed4 cd4 13.Ne4 Be4 14.de4–/+) 12.h3 (12.0–0 d4 13.Nd1 Ne3 14.Ne3 de3 15.Bf6 Nf6 16.Qe3 Ng4+=) 12...Bh4 (12...Ne3 13.Qe3 d4 14.Qc1 dc3 15.Bc3–/+) 13.Kf1+= Nh6 (13...Nf2 14.Nh4 Nh1 15.Qe1+=) 14.g4= Be7 (14...dc4 15.dc4 Be7 16.e4=) 15.Rg1 White intends g5 (15.cd5!? ed5 16.e4+=) 15...dc4= 16.dc4 Nf6?? (better is 16...Qc7=) 17.g5+– Nf5 18.gf6 Bf6 19.Ng5 (19.e4 Nd4+–) 19...Qe7 20.Bf3?? (20.Rb1 Rfd8+/–) 20...Bf3?? (better is 20...Bg5 21.Bb7 Qb7 22.Rg5 Qf3 23.Kg1 f6 24.Rf5 Qg3 25.Kf1 Qh3 26.Kf2 Qh2 27.Ke1 ef5+=) 21.Nf3+– Rad8 (21...Rfd8 22.Kf2 Rd3 23.Ne4 Bb2 24.Qb2+–) 22.Ke2 Rd7 (22...Nd6 23.Nb1+–) 23.Qc2 (23.Ne4!? Bb2 24.Qb2 f6+–) 23...Rfd8 24.Rad1 Kf8 (24...Rd1 25.Rd1 Nd6 26.Na4+–) 25.Rd7 Rd7 26.Ne4 Bb2 27.Qb2 f6 28.Qc2 Qd8 29.Nf2 (29.Ng3 Ng3 30.Rg3 g6+–) 29...Kf7 (29...Qa8 30.Qe4 Qc8 31.Nh1+– (31.Qe6?? Rd2 32.Nd2 Qe6–+)) 30.Rd1 Rd1 (30...Ng3 31.Ke1 Nf5 32.Rd7 Qd7 33.Qc3+–) 31.Qd1 Qa8 (31...Ng3 32.Ke1 Qd1 33.Kd1+–) 32.Qd7 Kf8 33.e4 (33.e4 Ng3 34.Ke3+–) 1–0. Olej,Emil – Fleischer, Swidnica Slaska Poland, 1965.

6.Nf3 Bd6 7.Be2 Bb7 8.0–0 0–0 9.Ne5 Nbd7 10.c4 Qc7 11.d4 (11.Nd7 Nd7 12.cd5 Bd5=) 11...Ne4 (11...a6 12.Nd7 Qd7 13.Nc3+=) 12.Nd2= Ndf6 13.Ndf3 (13.Rc1 a6 14.cd5 Nd2 (worse is 14...Bd5 15.ba6 Qa7 16.Ne4 Ne4 17.Bd3+=) 15.Qd2 ed5 16.dc5 bc5+=) 13...dc4 (13...a6 14.a4+=) 14.Bc4 (14.Nc4 Rfd8=) 14...Nd5 (14...a6 15.a4+=) 15.Qb3 (better is 15.Qd3 Nb4 16.Qe2=) 15...a6 (better is 15...Rfd8!?=) 16.ba6+/– Ba6 (16...Bc6!? 17.Nc6 Qc6+/–) 17.Ba6+– Ra6 (17...cd4 18.Bd4 Nc5 19.Qb5+=) 18.Qd3 (18.Qd3 Ne3 19.Rfc1 (19.Qe4?! Nf1 20.Ng5 g6+=; 19.Qe3?! Nf6+–) 19...Ng2 20.Qe4 (20.Kg2?! Qb7+/–) 20...Nf4 21.Qf4+–) 1–0. Bergljung,Andreas – Jensen,B, corr, 1978.

6.Nf3 Nbd7

7.c4 a6 8.cd5 ed5 9.ba6 =.

7.c4 Bb7 8.a4 (8.cd5 ed5 9.Be2 Be7=) 8...a5 (8...Bd6 9.Be2=) 9.Be2 (9.Bd3 Bd6=) 9...Bd6 10.Na3 (10.0–0 0–0=) 10...Qc7 (10...0–0 11.0–0=) 11.Rc1 (11.cd5 Bd5 12.d3 Ng4=) 11...0–0 (11...d4 12.0–0=) 12.0–0 (12.cd5 Bd5 13.Nc4 Be7=) 12...d4+= 13.ed4 cd4 (13...Bf4 14.h4–/+) 14.Nc2 (14.g3 Qc5 15.Nd4 Qb4=) 14...d3 (14...Bf4 15.Ncd4 e5 16.g3 ed4 17.gf4 Qf4 18.Qe1–+) 15.Bd3 Nc5 (15...Bf4 16.g3 Bd6 17.Qe2+=) 16.Nce1= Bf4 17.Bc2 (17.Bf6 gf6 18.Bc2 Rfd8=) 17...Rad8 (17...Ng4 18.h3 Nh2 19.Nh2 Bh2 20.Kh1 Rad8=) 18.Qe2 (better is 18.Bf6!? gf6 19.Qe2=) 18...Ng4–/+ 19.g3 (better is 19.Rd1 Bh2 20.Kh1–/+) 19...Bh6 (better is 19...Rd2! 20.Nd2 Be3 21.Rf2 Bf2 22.Kf1 f5–+) 20.Rd1= f5 (20...Rfe8=) 21.d4 (21.Ng2 Qd6=) 21...Ne4 (21...Be3!? 22.Kg2 Ne4–/+) 22.Rd3 (22.Ng2!?=) 22…f4 (22...f4 23.Ra3 Ne3 24.gf4 Nc2 (worse is 24...Nf1 25.Be4 Be4 26.Qe4=) 25.Nc2 Rf4–/+; 22...Qc4 23.Bb3 Qc8 24.h3–/+) 0–1. Hecht,HJ – Schulz,J, Berlin, 1955.

7.c4 Bb7 8.Nc3 dc4 9.Bc4 Be7 10.0–0 0–0 11.d3 Qc7 12.Bc1 (12.Qe1 Rfd8+=) 12...Rad8 13.e4 h6 14.e5 Nd5 15.Nd5 ed5 16.Bb3 c4 17.dc4? (better is 17.Bc2=) 17...dc4–+ 18.Bc2 Ne5! 19.Qe2 (19.fe5 Rd1) 19...Nf3 20.gf3 Rfe8 21.Qg2 Qc5 22.Kh1 Qb5 23.f5 (23.Bb2 Bf8–+ (23...Qb2?! 24.Bh7 Kh7 25.Qb2–/+)) 23...Kh8 24.Rb1 Qa6 (24...Qe5 25.Ba4 Rg8 26.Bc2–+) 25.Rg1 (25.Bb2 Bg5 26.Rf2 b5–+) 25...Bf6 26.Bb2 (26.Be4–+) 26...c3 27.Bc1 (27.Bc3 Bc3 28.f6 Bf6–+) 27...Qa2 (better is 27...Re2!? 28.Qg3 Rc2 29.Bf4–+) 28.Bf4 (28.h3 Bf3! 29.Qf3 Qc2–+) 28...Qd5 (28...Qc4 29.Bh6 gh6 30.Rbd1–+) 29.Be4 (29.Rgf1 Qc4 30.Qg3 Bd5–+) 29...Qd7 (better is 29...Re4 30.fe4 Qe4–+) 30.Bb7 Qb7 31.Qh3 (31.Rb4 Qc6 32.Rc1 c2–+) 31...Rd3 32.Bh6 (32.Rbf1 Kh7 33.Rf2–+) 32...Qf3 33.Qg2 (33.Qf3 Rf3 34.Bg5 Rf5 35.Bf6 Rf6 36.Rgc1–+) 33...Qg2 34.Rg2 (34.Kg2 gh6 35.Kh1 c2–+) 34...gh6 35.Rbg1 (35.h4 a5 36.h5 Rh3 37.Rh2 c2–+) 35...Rd2 (better is 35...a5 36.Rc1 Rd2–+) 36.Rd2 (36.Rc1–+) 36...cd2 37.Rd1 Bg5 38.Kg2 Re1 (39.Kf2 Rd1–+) 0–1. eds – mels03, Live Game Caissa's Web, 2004.

7.c4 Bb7 8.Nc3 Bd6 9.cd5 ed5 10.Be2 =.

7.Be2 Bd6 =.

5.f4 d4

6.Na3 Nbd7 7.Bd3 (7.Nf3 Nb6=) 7...Nb6 (7...e5 8.Ne2+=) 8.c4 dc3 9.dc3 Nfd5 10.Qe2 (better is 10.Qd2!?+=) 10...Na4–/+ 11.Nf3 (11.Nc4 Nac3 12.Bc3 Nc3–/+) 11...Nb2–+ (11...Nac3?! 12.Bc3 Nc3 13.Qd2+=) 12.Qb2 Ne3 13.Ne5 (13.Bc4 Qf6 14.g3 Nd5–/+) 13...f6 14.Qd2 (14.Qe2 fe5 15.Qe3 ef4–/+) 14...fe5 (14...Nd5!? 15.Nec4 Nf4 16.Be4 Qd2 17.Kd2–+) 15.Qe3–/+ ef4 16.Qh3 (16.Qf3 Qh4 17.g3 Qf6–/+) 16...Qa5 (16...Qg5 17.0–0–/+) 17.Qh5–/+ Kd8 18.Nb1 (18.Qg5 Kd7 19.Nb1 Qc7–/+) 18…Qb6 (18...Qb6 19.Qg5 Kc7 20.Qf4 Bd6+=; 18...Bd7!?–/+). Aiolfi,Antonio(+) – Thystrup,Preben, corr ICCF TT–2–86–1, 1986.

6.Na3 Be7 7.Nf3 +=.

6.Bd3 a6 =.

6.Bd3 b6 7.Nf3 de3 8.de3 Bb7 9.0–0 Nbd7 10.Nbd2 Be7 11.Qe2 0–0 12.c4 Qc7 13.a4 Bd6 14.a5 Rfe8 (14...a6 15.ab6 Qb6 16.Rfb1 ab5 17.cb5 Ra1 18.Ra1+=) 15.a6+/– Bc8 (15...Bf3 16.Qf3 (worse is 16.Nf3 e5=) 16...e5 17.Ne4+=) 16.Ne4 Be7 (better is 16...Ne4!? 17.Be4 Rb8+/–) 17.Ne5+– Ne5 (17...Bd6+–) 18.fe5 Nd7 19.Nd6! Bd6 (19...Rf8 20.Rf7! Rf7 21.Bh7 Kf8 22.Nf7 Bh4+–) 20.ed6 Qd6 21.Bh7 Kf8 22.Qf3 f6 23.Qa8 1–0. Jensen,Kristian Rohde – Van Gompel,Hugo, ICCF corr, 1991.

6.Bd3 Nd5 7.Qf3 (7.ed4? cd4 8.Bd4 Nf4 –+. Kucharkowski; 7.Qe2 Nb4. Kucharkowski) 7...Be7 8.Ne2 0–0 9.ed4 Bf6?! 10.Nbc3 Nc3 11.dc3 Qc7?! 12.Qh5 g6 13.Qc5 Qc5 14.dc5 Nd7 15.c6 Nc5! 16.cb7?! Bb7 17.a4 Bg2 18.Rg1 Bd5 19.Kd2 Rfd8 20.Kc1 Rac8 21.c4 Bb2 22.Kb2 Be4 23.Nc1 Bd3 24.cd3 Nd3 25.Nd3 Rd3 26.Rad1! Rd1 27.Rd1 Rc4 28.Kb3 Rc7 29.Kb4 Kg7 30.Ka5 Kf6 31.Ka6 g5 32.fg5 Kg5 33.a5 f5 34.b6 ab6 35.ab6 Rc3 36.Rb1 Ra3 37.Kb5 Ra8 38.b7 Rb8 39.Kc6 e5 40.Kc7 Rf8 41.Kd6 e4 42.b8Q Rb8 43.Rb8 e3 44.Ke5! 1–0. Pietrzak – Furlepa, corr AMM Poland 1990–91 (P).

6.Bd3 Be7?! 7.Nf3 Nd5!

6.Nf3 de3

7.de3 Qd1

8.Kd1 Nbd7 9.Bd3 b6 10.Nbd2 Bb7 11.Ke2 Be7 12.g4! Rg8 13.g5 Nd5 14.Bh7 Rh8 15.Be4 f5 16.gf6 N7f6 17.Bg6 Kf8 18.c4 Rh6 19.Rhg1 Nc7 20.Rg3 Rd8 21.e4 Nce8 22.Rag1 Nh7 23.Be8 Ke8 24.Rg7 1–0. Nielsen – Ruehle, corr TT–4–90 1990.

8.Kd1 Ne4 9.Rg1 (9.Ke1 Nd7=) 9...b6 (9...Nd7 10.Nbd2 Nef6 11.Bd3=) 10.Nbd2 Nd2 (10...Nd6 11.Ke1=) 11.Kd2+= f6 (11...Bb7 12.Bd3+=) 12.Bc4 Bd6 (12...a6 13.a4+=) 13.g4 (13.a4 Ke7+=) 13...a6 (13...Kf7 14.g5 Rd8 15.Bd3+=) 14.a4 (14.g5 ab5 15.Bb5 Bd7+/–) 14...Kf7 15.g5 (15.Ke2 Bb7+=) 15...f5 (15...Rd8 16.Bd3+=) 16.h4 (16.Ke2 Bb7+/–) 16...Ra7 (16...Rd8 17.Ke1+/–) 17.h5+/– Re8 (17...Rd8!?+/–) 18.g6+– Kg8 19.gh7 (19.gh7 Kh7 20.Ng5 Kg8 21.h6+–) 1–0. Kiviaho,Allan – Harald,Olav, corr FIN–ch fin, 1970.

8.Kd1 Be7 9.Nc3 =.

8.Kd1 Be7 9.Bd3 b6 (9...Nbd7 10.Ke2+=) 10.Nbd2 (10.a4 a6+=) 10...Bb7 (10...Nbd7 11.Ke2+=) 11.Ke2 (11.a4 Nd5 12.Ke2 Nd7+=) 11...Nbd7 (11...0–0 12.a4+=) 12.c4 (12.a4 Nd5+=) 12...0–0 (12...a6 13.a4+=) 13.a4 Rfd8 (13...a5 14.Rhg1+=) 14.Rhg1 (14.a5 a6+=) 14...Ng4 (14...a6 15.Rgd1=) 15.e4 (15.h3 Bf6 16.Bf6 Ngf6+=) 15...f6 (15...Ndf6!? 16.a5 ba5 17.Ra5 Nf2 18.Kf2 Rd3+/–) 16.h3+= Nh6 17.g4 (17.a5 Nf8+/–) 17...Nf7 (17...Rab8+=) 18.g5 (18.a5 Rab8+=) 18...e5 (18...fg5 19.a5=) 19.g6 (19.gf6!? Bf6 20.f5+=) 19...hg6+= 20.Rg6 (better is 20.fe5 Nde5 21.Ne5 Ne5 22.Be5 fe5 23.Rg6+=) 20...Kh7 (better is 20...Nf8 21.Rg4 Nh6+=) 21.Rag1+= Rg8 22.f5 (22.Bc3 Rad8+= (22...ef4? 23.e5 Kh8 24.e6+–)) 22...Nh8 (22...a6 23.Bc2+=) 23.R1g4 Ng6?? (better is 23...Nf7+=) 24.fg6 Kh6 25.Bc1 (25.Bc1 f5 26.ef5 Bf3 27.Kf3 Kh5 28.Ne4 Bh4 29.Ng3 Bg3 30.Kg3 e4 31.Rh4#) 1–0. Kuehn – Grigutsch, corr DDR, 1974.

5.f4 Bd6

6.a4 0–0 7.Nf3 Nbd7 8.Be2 Qc7 9.Na3 Re8 (9...Ne4 10.d3 Qa5 11.c3=) 10.c4 (10.0–0 e5 11.fe5 Ne5 12.Be5 Be5 13.Ne5 Qe5=) 10...d4+= 11.0–0 (11.0–0 e5 12.fe5 Ne5 13.ed4+=). Rosner,Dirk (2175) – Fuertes,Cesar (1890), CiF, 2005.

6.Nf3 0–0

7.c4 a6 8.Na3 Qa5 9.Bd3 Bd7 10.Qb3 ab5=+ 11.Nb5 dc4 12.Qc4 Be7 13.0–0 Bc6 14.a4 Na6=+ 15.f5 Bd5 16.Qc1 Nb4 17.Bb1 Bb3 18.fe6 fe6=+ 19.Ng5 h6 20.Ra3 Bd5 21.Nh3 c4 22.Nf4 Nd3 23.Bd3 Ba3 24.Ba3 cd3 25.Bf8 Rf8 26.Nc3 Bc4= 27.Ne4 Ne4 28.Qc4+= Qd5 29.Qb4 Qf5 30.h3 Rf7 31.Rc1 Kh7 32.g4 Qe5= 33.Rc4 Ng3 34.Qb1 Rf4 35.ef4 Qd5 36.Kf2 Ne4 37.Re4 Qe4 38.Kg3 ½–½. Birzer,Lothar – Woischke,Norbert, CiF, 2000.

7.c4 Nbd7 8.Nc3 Nb6 9.d3 a6 10.a4 Ng4 11.Qd2= ab5 12.cb5 Bd7 13.Be2= Be8 14.0–0 Ra5 15.Bd1 c4 16.Nb1 Qa8 17.Ng5 Nf6= 18.Bc3 Ra7 19.Bd4 c3? 20.Nc3+– Nfd7 21.e4 Bc5 22.Bc5 Nc5 23.ed5 Nd5+– 24.d4 Nc3 25.Qc3 Nd7 26.Qd3 g6 27.d5 ed5 28.Qd5 b6 29.Qd4 h6 30.Bf3 Qb8+/– 31.Nh3 Nc5 32.Bd5 Rd7 33.Rad1 Ra7 34.Qf6 Kh7 35.f5 g5?? 36.Ng5! (36.Ng5 hg5 37.Rf3+–) 1–0. Bosak,A (1725) – Osowicki,L (1740), corr, 2002.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bd7 11.c4 dc4 12.Bc4 b6 13.0–0 Bc8 14.Qe1 Nd5 15.Qg3+= f6 16.Qh3 Qe7 17.Nh4 Bb7 18.f5+/– Nc7? 19.fe6 g6 20.Nc3 Be5 21.Qg4 Kh8 22.d4 Bd6? 23.d5+– Be5 24.e4 Ne8 25.Qg6 Nd6 26.Qh5 Rg8 27.Bd3 c4 28.Bc2 Qc7 29.Nf3 (29.Nf3 Qg7 30.Rf2+–) 1–0. Bender,Herbert – Wuensch,Rainer, corr DDR–ch M616, 1978.

7.Be2 a6 8.a4 ab5 9.Bb5 Bd7 10.Nc3 Nc6 11.0–0 Na5 12.Bd7 Qd7 13.Nb5 Be7 14.Ne5 Qd8 15.Rf3 Nc6 16.Rh3 d4 17.c4 Re8 18.d3 Bf8 19.ed4 Nd4 20.Nd4 cd4= 21.Rb1 g6 22.Ba1 Ra7 23.Rb5 Bg7 24.Bb2 Qd6 25.Qf3 Re7 26.a5 Rc7 27.Qf2+/– Ra8 28.Bd4 Nd7 29.Bb2 Ne5 30.fe5 Be5?? 31.Be5 (31.Be5 Qe7 32.Qg3+–) 1–0. pcmvr (2870) – waldokitty (2460), net–chess.com, 2009.

7.Be2 b6 8.0–0 Bb7 9.a4 Nbd7 10.c4 Re8 11.Ne5 Qc7 12.d4 cd4=+ 13.ed4 dc4 14.Ba3 Ba3 15.Na3 c3–/+ 16.Rc1 Nd5 17.Rf3 N7f6 18.Bd3 g6 19.Qb3 Rac8 20.g4 Nb4–+ 21.Qb4 Bf3 22.Nac4 Nd5 23.Qa3 Nf4 24.Nd6 Qe7 25.Nf3 Nd3 26.Rc3 Rc3 27.Qc3 Qd6 28.Qd3 e5 29.Qe4 f6 (29...f6 30.de5 fe5–+) 0–1. Pietrzak,Janusz – Fischer,Johann, corr ICCF EU–M–794, 1990.

7.Be2 Nbd7

8.0–0 Qc7 9.Qe1? e5! 10.Ne5 Ne5 11.fe5 Be5 12.Be5 Qe5 13.Nc3 Bf5 14.Qd1 d4 15.ed4 cd4 16.Na4 Bc2 17.Qc2 Qe2 18.Rf5 b6 19.Nb2 Rac8 20.Qd1 Rfe8 21.Rb1 Qe4 22.Rf3 Rc2 23.d3 Qe2 24.Qe2 Ree2 25.Nd1 Rg2 26.Kf1 Ng4 27.Nf2? Rcf2 28.Rf2 Rf2 0–1. Frenzel – Roggensack, corr SOK–89–40 (Roggensack).

8.0–0 Qc7 9.Re1 Re8=+ 10.d3 e5 11.fe5 Ne5 12.g3? Nf3?? 13.Bf3=+ Bg3 14.hg3 Qg3 15.Kh1 Ng4 16.Re2 Qf3 17.Kg1 Re3 18.Rd2 Qg3 19.Kf1 Rf3 20.Qf3–+ Qf3 21.Kg1 Qg3 22.Kf1 Ne3 23.Ke2 Bg4# 0–1. Kurnatowski,Vitali – Poetsch,Hagen (1935), Hessen–ch U14, 2005.

8.0–0 Re8 9.Ne5 Qc7 10.Nd7 Nd7 11.Nc3 b6 12.Bf3 Bb7 13.Qe2 Nf6 14.g3 Rad8 15.Qg2 Be7 16.d3 Rd7 17.a4 Red8 18.Rae1 h6 19.e4 d4 20.Nb1 a6 21.Na3 a5 22.Nc4 Bf8 23.Ne5 Re7 24.g4 Nh7 25.h4 Ree8 26.g5 hg5 27.hg5 g6 28.Kf2 Bg7 29.Qg3 Nf8 30.Ng4 Nd7 31.e5 Bf3 32.Qf3 Kf8 33.Nf6 Ke7 34.Ne8 Re8 35.Rh1 Rg8 36.Qe4 Bh8 37.c3 dc3 38.Bc3 (38.Bc3 Bg7 39.Qc6+–) 1–0. Grund,Karl – Gerold, corr T365/19–M, 1972.

8.a4 Qc7 9.c4 e5 10.fe5 Ne5 11.Ne5 Be5 12.Be5 Qe5 13.Nc3 (13.Ra3!?=+) 13...d4–/+ 14.Nd5 Nd5 15.ed4?? (better is 15.cd5 de3 16.de3–/+) 15...cd4–+ (15...Qd4?! 16.cd5 Bf5 17.Ra3–+) 16.cd5 d3 (16...d3 17.Ra3 Bf5–+ (17...Qe2?! 18.Qe2 de2 19.Re3–+); 16...Qd5?! 17.0–0–/+) 0–1. Markus,O – Claesson, corr WT–III–470, 1980.

6.Nf3 Nbd7

7.a4 b6 8.Be2 Bb7 9.0–0 0–0 10.c4 Qc7 11.Qb3 e5 (11...d4 12.a5+=) 12.fe5= Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Ra2 (15.Ra3 dc4 16.Bc4 Qg5+=) 15...d4 (15...a6 16.ba6 Ra6 17.Na3+=) 16.Bf3 (16.a5 ba5 17.Ra5 Rfe8=) 16...Be4 (16...Bf3 17.Rf3 Rae8 18.h3+=) 17.Be4 (17.a5 Rae8 18.ab6 ab6 19.Be4 Qe4+=) 17...Ne4 18.d3 (18.a5 Nd6=) 18...Nd6 (18...Nf6 19.ed4 Qd4 20.Kh1–/+) 19.e4 (19.ed4!? Qd4 20.Raf2+=) 19...f5–/+ 20.Re2 (20.ef5 Qe3 21.Raf2 Rf5–+) 20...fe4–+ 21.Rf8 Rf8 22.de4 (22.Nd2 Qf5 23.de4 Ne4–+) 22...Ne4 (better is 22...Qf4 23.Qd1 d3–+ (worse is 23...Nc4 24.g3 Qf3 25.Nd2 Nd2 26.Rd2–+; 23...Ne4?! 24.Qe1 Nd6 25.Nd2–+)) 23.Qd3? (better is 23.Qd1 Qh5 24.Qe1–+) 23...Qf4 24.Nd2 Nd2 (24...Nc3 25.Nf3 Qc1 26.Ne1 Ne2 27.Qe2–+) 25.Rd2 Re8 Threatening mate... how? 26.Re2 Qc1 27.Kf2 Rf8 28.Kg3 Rf6 (better is 28...Qf4!? 29.Kh3–+) 29.h4 Qf4 30.Kh3 Qf5 (30...Kf7 31.Re1–+) 31.Qf5–/+ Rf5 32.Kg3 (32.Re7 Rf7 33.Re8 Rf8–+) 32...Kf7 33.Re1 Kf6 (33...g5 34.hg5 Rg5 35.Kf3–+) 34.Re2 Rf1 (34...Rf1 35.a5 Rc1 36.ab6 ab6–+) 0–1. Borrmann,Fritz – Sznek,Jorge Eduardo, corr, 1985.

7.a4 Qc7 8.c4 0–0 9.Be2 e5 10.fe5 Ne5 11.Ne5 Be5 12.Be5 Qe5 13.Ra3 dc4 14.0–0 Be6 15.Qc2 Rad8 16.Rf4 (16.a5 Rd6–/+) 16...Nd5 (16...g5 17.Rf1–/+) 17.Rc4 (17.Rf1 Nb4 18.Qc3 Qc3 19.Rc3 Nd3–/+) 17...Nb4–+ 18.Qc3 Qc3 (18...Qf5!? 19.Rb4 cb4 20.Qb4 Qg6–+) 19.Rcc3–/+ (19.Nc3?? Rd2 20.Re4 Nc2 21.Re6 Na3–+) 19...b6 (19...Ba2 20.Rc5 Bb1–/+) 20.d3? (better is 20.Bc4!?+=) 20...Nd5–+ 21.Rc1 Ne3 22.Nd2 (22.Nc3 Rfe8 23.a5 Bg4 24.Bg4 Ng4 25.ab6 ab6–+) 22...Rfe8 23.Nc4 White prepares a5 (23.Kf2 Bd5 24.g3 Nf5–+) 23...Nc4 (better is 23...Ng2!? 24.Kg2 Bc4 25.Kf2–+) 24.dc4 Rd2 25.Bf1 Red8 26.a5 g6 27.ab6 ab6 28.Ra6 R8d6 29.Ra8 Kg7 30.Rb8 Ra2 31.h3 h5 32.h4 Kf6 33.Kh2 Ke5 34.Kg3 Ra3 35.Kf2 Kf4 36.Rb7 Ra2 37.Be2 Rdd2 38.g3 Kf5 39.g4 hg4 40.Kg3 0–1. De Visser,Arno – Hyldkrog, Copenhagen, 1981.

7 a4 Qc7 8 g3 b6 9 Bg2 Bb7 10 d4 cd4 11 ed4 Rc8 12 c3 Ng4 13 Qd3 Qc4 14 Qc4 dc4 15 Bc1 g5! 16 fg5 Nh2 17 Nh2 Bg2 18 Rg1 Bg3 19 Kd1 Bh2 20 Rg2 Bd6 21 Be3 e5 22 Nd2 f5 23 gf6 Nf6 24 Kc2 Nd5 25 Re1 Rf8 0–1. F Mueller – A de Visser, corr SOK–89–42 (de Visser).

7.c4 d4!? +=.

7.Bd3 +=.

7.Be2 (--> 5.f4 Nbd7 6.Nf3 Bd6 7.Be2).

7.Ne5 a6 –/+.

7.Ne5 Qc7 8.d4 (8.Ng4!?+=) 8...cd4 (8...0–0 9.Nd2–/+) 9.ed4 Ne4 10.Bd3 Bb4 (10...0–0 11.Nd2 Nc3 12.Qg4–+) 11.Kf1? (better is 11.c3 Ba5 12.0–0=) 11...0–0–+ 12.g3 f6 (12...f6 13.Nd7 Bd7–+). Szoelloesi – Szilagyi, corr, 1969.

7.c4 0–0

8.Be2 b6 9.0–0 Bb7 10.a4 Qc7 11.cd5 Nd5 12.Nc3 Nb4 13.Ng5 (13.d4 Rac8=) 13...h6 (13...Nf6 14.Nf3=) 14.Nge4 Be7 15.Bc4 Rad8 (15...Rfd8=) 16.g4 (16.d3!?=) 16...Nf6+= 17.Nf2 Nfd5 (17...Ne8 18.Nce4+=) 18.Qe2 Ba8 (18...Nc2 19.Nd5 ed5 20.Rac1+=) 19.g5 (19.d3 Nc3 20.Bc3 Qb7=) 19...hg5+= 20.fg5 Qe5 (20...Bg5 21.Nce4 Qe7 22.Qh5+=) 21.g6 fg6 22.Qg4 (22.a5 Qg5 23.Ng4 Nc7 24.Rf8 Rf8+=) 22...Bd6–/+ The mate threat is Qxh2 23.Qh3 Qg5 24.Ng4 Qh5 25.Nf2 Qg5 (25...Rf3 26.Qh5 gh5 27.Nce4+=) 26.Ng4 Qh5 (26...Nc7!? 27.Rf8 Bf8–/+) 27.Nf2= ½–½. Engel,Berthold (1985) – Gaertig,Lothar (2075), corr DDR–Cup6 sf8, 1979.

8.Be2 d4 9.0–0 e5 (9...Qc7 10.ed4 cd4 11.Bd4 Bf4 12.Be3+=) 10.fe5 Ne5 (worse is 10...Be5 11.ed4 cd4 12.Ne5 (12.Bd4? Bd4 13.Nd4 Qb6–+; 12.Nd4? Qb6 13.Kh1 Bd4–+) 12...Ne5 13.Rf4+=) 11.ed4 Nf3 (11...cd4 12.Kh1= (worse is 12.Bd4 Nf3 13.Bf3 Bh2 14.Kh2 Qd4–/+; 12.Nd4? Bc5 13.Kh1 Bd4–+)) 12.Bf3 (worse is 12.gf3 Nh5 13.Rf2 cd4–/+) 12...cd4 13.d3 (worse is 13.Bd4 Bh2 14.Kh2 Qd4–/+) 13...Re8 14.a4 (14.Nd2=) 14...Bf5 (14...Qe7 15.Qd2+=) 15.Na3 (15.c5 Bc5 16.Bb7 Ng4 17.Ba8 Qb8+=) 15...Re3 (better is 15...Qc7 16.Bd4 Bh2 17.Kh1 Qg3=) 16.Nc2 (better is 16.Bb7 Bg4 17.Bf3 Bf3 18.Rf3+/– (18.gf3 Nh5 19.Qc2 Nf4–+)) 16...Rd3–/+ Black terminates the opponent with strong threats 17.Qe2 (17.Qc1 Qc7 18.Bb7 Bh2 (18...Qb7 19.Rf5 Qe4 20.Rf6 gf6 21.Qe1–+) 19.Kh1 Qb7 20.Rf5 Qe4–+) 17...Qc7 18.g4 (18.Rae1 Bh2 19.Kh1 Bg3 20.Bb7 Qb7 21.Rf5 Rb3 22.Bd4 Be1 23.Rf6 Bc3–/+ (23...gf6?! 24.Qg4 Kf8 25.Bc5 Ke8 26.Nd4=)) 18...Re8 19.Qg2 Bh2 20.Kh1 Rf3 21.gf5 (21.Rf3 Be4 22.Nd4 Be5–+) 21...Rf1 22.Rf1 Be5 23.Rg1 Threatening mate... how? 23...Nh5 24.Qe4?! (24.Re1 Qc4 25.Nd4–+) 24…Qc4 (24...Qc4 25.Bd4 Re7–+) 0–1. Zylla,Johannes – Riedel,Hartmut, corr FRG jub40 qg33, 1986.

8.Be2 Qe7 9.Na3? e5 10.fe5 Ne5 11.0–0 (11.cd5!?) 11...d4! 12.Qb3? Ne4! 0–1. Lopez Esnaola – Schwanfelder, corr 1975.

7.c4 dc4

8.Na3+= Nb6 9.Nc4 Nc4 (9...Be7 10.Qb3+=) 10.Bc4+/– 0–0 11.Ne5 (better is 11.Qc2!? Be7 12.0–0+/–) 11...Ne4= 12.Nf3 Be7 (better is 12...Nf6!?=) 13.Qc2+/– Nf6 14.Ne5 (14.0–0 Nd5+/–) 14...Qc7 (14...Nd5 15.0–0+=) 15.Bd3 (15.0–0 g6+/–) 15...h6 (15...b6+/–) 16.h4 (better is 16.0–0+/–) 16...Bd7? (better is 16...b6=) 17.g4+– Nd5 18.g5 f5? (18...c4 19.Qc4 Qc4 20.Bc4+– (20.Nc4?! Bb5 21.Ne5 Bd3 22.Nd3 h5=)) 19.gf6 (better is 19.gh6!? gh6 20.Rg1 Kh7 21.Nd7 Bh4 22.Ke2 Qd7 23.Rg7 Qg7 24.Bg7 Kg7 25.Rg1 Kh7 26.Qc5 Rf7+–) 19...Nf6 (19...Rf6!? 20.a4 Be8+/–) 20.Ng6+– Rf7 21.Ne7 Re7 22.Bf6 gf6 23.Rg1 Rg7?? (better is 23...Kh8 24.Rg6 Rg8 25.Rf6 Kg7 26.Rg6 Kf8 27.Rh6 Rg1 28.Bf1 Reg7+–) 24.Bh7 Kh8 25.Rg7 Kg7 (25...f5 26.Rf7 Rg8 27.Qc3 e5+–) 26.Qg6 Kh8 27.Qh6 (27.0–0–0 Qd6 28.Rg1 Qe7 29.Bg8 Bb5 30.Qh6 Qh7 31.Qh7) 27...Bc8+– 28.Be4 Kg8 29.Kf2 Qd6 30.Rg1 Kf7 31.Rg7 Ke8 32.Qh8 Qf8 33.Bg6 Kd8 34.Qf8# 1–0. Stabenow,Juergen – Gerber,K, corr, 1981.

8.Na3+= c3 9.Bc3 Be7 10.Bd3 +=.

8.Bc4 0–0 9.0–0 =.

8.Bc4 b6 9.0–0 0–0 10.Qb3 Re8 11.f5 Nf8 12.Ne5 (12.g3 h6=) 12...Be5 (12...Qc7 13.d4 cd4 14.ed4 Be5 15.de5 Qc5 16.Kh1 Ne4–/+) 13.Be5+= Nd5 (13...Ng4 14.Bg3+=) 14.e4 (14.Nc3 Nc3 15.Bc3+/– (worse is 15.Qc3 f6 16.Bg3 Bb7+=)) 14...Nc7? (14...Nf6!? 15.fe6 Be6 16.Bf6 gf6+/–) 15.Qg3 (15.f6 Ng6 16.Qg3 a6+–) 15...f6 16.fe6 (16.Bb2 Kh8 17.Rf3+=) 16...Nce6? (better is 16...Be6 17.Bf6 Qd7+=) 17.Bf6 (17.Rf6 Ng6 18.Rg6 hg6 19.Qg6 Re7+–) 17...Qd7 18.Bd5 (18.Nc3 Kh8 19.Bd5 Bb7 20.Bg7 Qg7 21.Qg7 Kg7 22.Bb7 Rad8+–) 18...Bb7 19.Nc3 (19.Bg7 Qg7 20.Bb7 Qg3 21.hg3 Rab8+–) 19...Kh8? (better is 19...Ng6!? 20.Qg4 gf6 21.Rf6 Bd5 22.ed5 Rad8 23.Re6 Re6 24.de6 Qd2+/–) 20.Bg7! Qg7 (20...Qg7 21.Qg7 Combination; 20...Ng7 21.Rf7 Decoy) 21.Qg7 Kg7 22.Bb7 Rad8 23.Bd5 Re7 24.Rf2 Rf7 25.Rf7 Kf7 26.a4 (26.Rf1 Ke7+–) 26...Ke7 27.a5 Kf6 28.ab6 ab6 29.Ra6 Rd6 30.Kf2 Ke5? (30...Nd4 31.Ke3+–) 31.Ke3 (better is 31.Na4 Nd7 32.Nb2 Rd5 33.ed5 Kd5+–) 31...Nd4 32.d3 (32.Ra8 Nfe6+–) 32...Nd7 (32...Rg6 33.Ra2+–) 33.Bc4 Rg6 34.Ra7?? (better is 34.Kf2+–) 34...Kd6?? (better is 34...Rg2 35.Rd7 Nc2 36.Kf3 Ne1 37.Ke3 Nc2 38.Kf3 Ne1 39.Ke3 Nc2=) 35.e5!+– Ke5 36.Rd7 Rg2 37.Rh7 Rc2?? 38.Rh5+– Nf5 39.Kf3 Rc3 40.Kg4 Kd4 41.Kf5 Rc2 42.Ke6 1–0. Matveenko,Yury (2135) – Novikov,Ivan (1870), Voronezh Region Senior Championship, 2011.

8.Bc4 Qc7 9.Qc2 0–0 10.Nc3 (10.0–0 e5=) 10...e5 (10...Nb6 11.Be2=) 11.fe5 (11.Ng5 Nb6 (11...ef4?? 12.Nd5 Qb8 13.Bf6+–) 12.Nce4 Ne4 13.Qe4 g6 14.fe5 Be7+=) 11...Ne5= 12.Nd5 Nd5 13.Bd5 Bd7 (13...Nf3 14.gf3 Kh8 15.f4=) 14.Ne5 (14.Be5 Be5 15.Rc1 Rab8+=) 14...Be5= 15.Bc4 (15.d4 Bh2 16.g4 Qg3 17.Qf2 Qf2 18.Kf2 Bd6=) 15...Bb2 (15...Bf5 16.Qf5 Bb2 17.Rd1=) 16.Qb2 Rae8 (better is 16...Be6 17.Rc1 Qb6=) 17.0–0–0 (better is 17.0–0!?=) 17...Re4 (17...Be6 18.Qc2–/+) 18.Qb3 (18.Qc2 Qe5 19.Bd3 Rh4–/+) 18...Qe5 (18...Be6 19.Be6 Re6 20.Rdf1–/+) 19.Rdf1 White gets in control 19...Bf5 20.Rf5 (better is 20.Kd1!?–/+) 20...Qf5–+ 21.Bd3 Rfe8 (better is 21...c4!? 22.Be4 Qe4–+ (22...cb3?? 23.Bf5 ba2 24.Kb2+–)) 22.Rf1+= Qe6 (better is 22...Qd7!? 23.Be4 Re4+=) 23.Be4= Qb3 24.Bh7 Kh7 25.ab3 Kg6 26.Kc2 (26.Rf4 Ra8+/–) 26...Re4 (26...Rh8 27.h3+/–) 27.Ra1 b6 (better is 27...Rb4!?+/–) 28.Ra7+– Rb4 (28...f6 29.Kc3+–) 29.Ra4 Rb5 30.Kc3 Kf5 (30...c4 31.bc4 Rg5+–) 31.Kc4 Rb4 (31...Rb3 32.Kb3 g5 33.Ra6+–) 32.Rb4 cb4 33.Kb4 (33.Kd5 Kf6 34.Kd6 Kf5+–) 33...Ke4 34.d4 f5 35.Kb5 Ke3 36.d5 Kf2 37.d6 Kg2 38.d7 f4 39.d8Q f3 40.Qg5 (40.Qg5 Kh2 41.Qe5 Kg2 42.Qg7 Kf1 43.Kc4 b5 44.Kd3 Kf2 45.Qd4 Kg2 46.Ke3 f2 47.Qg4 Kf1 48.Qg3 Ke1 49.Qf2 Kd1 50.Qd2#; 40.Qh4!? f2 41.Qg3 Kf1+–) 1–0. Kuhlmann,Antonius Egidius J – Preusze,Goetz, corr ICCF EU–GT–H–56, 1975.

5.f4 Nbd7

6.a4 b6 7.Nf3= Bb7 (7...Be7 8.Be2=) 8.Be2 Bd6 (8...Be7 9.0–0=) 9.0–0 Qc7 (9...0–0 10.Qe1=) 10.c4 (10.a5 a6 11.ba6 Ba6 12.ab6 Qb6 13.Ba6 0–0=) 10...d4 (10...0–0 11.cd5 Nd5 12.Nc3=) 11.Qe1 (11.a5=) 11...0–0–0 (11...0–0!?=) 12.ed4 (12.Qg3 Rhg8 13.Ng5 Nb8+=) 12...Bf4 (12...cd4 13.a5 Bf4 14.g3=) 13.g3 Bd6 14.dc5 (14.a5!?+=) 14...Nc5= (worse is 14...Bc5 15.d4 Bf3 16.Rf3+/– (worse is 16.dc5 Qc5 17.Rf2 Be2 18.Qe2 h5–/+); worse is 14...Qc5 15.d4 Qh5 16.Ne5+/–) 15.d4 Nce4 (15...Nb3 16.Ra2=) 16.Nbd2 (16.Bd3 Nc5 17.Bc2 Nce4=) 16...Ng3 (16...Bb4 17.Bd3+=) 17.hg3= Bg3 18.Qc1 (18.Qb1 Bh2 19.Kh1 Bf4=) 18...Bh2+= 19.Kh1 White gets in control (19.Nh2 Qg3 A classical mating theme) 19...Nh5 20.c5? (better is 20.Qe1!?+=) 20...Ng3–+ 21.Kg2 Ne2 The mate threat is Qg3 22.Qe1 Bf3 23.Nf3 Qg3 (23...Nf4 24.Kh1 Nd3 25.cb6 Qc2 26.ba7 Kb7+=) 24.Kh1= Nf4 Do you see the mate threat? 25.Qd2 Bg1 26.Ng1 Rd5 The mate threat is Rh5 27.Rf2 (27.Nf3!? bc5 28.Ra3+=) 27...Nd3 Threatening mate: Nxf2 28.Rh2 Rf5 (worse is 28...Nb2 29.Qb2 bc5 30.Rc1+/–) 29.Nh3 Qf3 (29...bc5 30.dc5 Qf3 31.Qg2 Nb2 32.Qf3 Rf3=) 30.Kg1= Rh5? (30...bc5 31.Ng5 Qg4 32.Rg2 Rg5 33.Qg5 Qg5 34.Rg5 Nb2 35.Rc5 Kb7+/–) 31.Ra3+/– Qg3 32.Rg2 Qh3 Threatening mate... how? 33.Rd3 Qh1 34.Kf2 Rf5 35.Rf3+– Qh4 36.Rgg3 bc5 37.Rf5 ef5 38.Qg5 Qe4 39.Re3 h6 –/+. Kucharkowski,Jens – Idler,Frank, corr 11.DDR–SFM, 1986.

6.a4 Bd6 7.Be2 +=.

6.c4 b6 7.Nf3 Bb7 8.a4 Bd6 9.Be2 a5 10.ba6 Ba6 11.cd5 Nd5 12.Ba6 Ra6 13.Qe2 Qa8 14.Bg7 Rg8 15.Be5 Be7 16.0–0? Ra4 17.Ra4 Qa4 18.Nc3 Nc3 19.Bc3 (worse is 19.dc3 f6 (worse is 19...Ne5 20.Ne5 Qe4 21.Rd1+=) 20.Bc7 Rg7–/+) 19...Qc6 20.Qd3 f5 21.Kf2 b5 Black plans c4 22.g3 b4 23.Be5 c4 24.Qe2 Nc5 (worse is 24...Ne5 25.Ne5 Qd5 26.Rc1+/–) 25.Ra1 Nd3 26.Kg1 Qb7 27.Nd4 Kd7 Black prepares the advance b3 (worse is 27...Ne5 28.fe5 f4 29.Qh5 Kd7 30.Qf7+/– (30.ef4? Qb6 31.Kf1 Qd4–+)) 28.Qf3 (better is 28.Qh5!? Ra8 29.Ra8 Qa8 30.Qf7 (30.Qh7? Ne1 31.Qh3 b3–+) 30...Qa1 31.Kg2=) 28...Qf3–/+ 29.Nf3 Bc5 30.Bd4 Rc8 31.Kf1 b3 32.Ke2 Kd6 33.Bc3 Bb4 34.Bb4 Nb4 35.Nd4 Rc5 36.Kd1 Na2 37.Rb1 Kd5 38.d3? (better is 38.Rb2 Nb4 39.Nb3 cb3 40.Rb3–/+) 38...Nc3–+ 39.Kc1 Nb1 40.dc4 Rc4 41.Kb1 Rd4 42.ed4 Kd4 43.Kb2 Kc4 (43...Kc4 44.h3 h5–+) 0–1. Koroljkov,A – Gumerov,Renant (2195), RUS–ch Seniors, 2009.

6.c4 d4 7.Nf3 Bd6 8.Be2 +=.

6.c4 Be7 7.cd5 ed5 8.Nf3 +=.

6.Nf3 c4 =.

6.Nf3 Be7 (--> 5.f4 Be7 6.Nf3 Nbd7).

6.c4 a6

7.a4 Bd6 8.Nf3 Qc7 9.g3 (9.Be2 0–0=) 9...0–0 10.Nc3 Re8 11.Be2 dc4 12.Bc4 Nb6 13.Bd3 (13.Be2 a5=) 13...Bd7 (13...c4 14.Be2 Rd8 15.a5+=) 14.a5= Nbd5 15.Nd5 ed5 (15...Nd5 16.b6 Qc6 17.0–0=) 16.b6 (better is 16.Bf6!? gf6 17.b6+=) 16...Qd8+= 17.0–0 h6 (17...c4 18.Bc2+=) 18.Ne5= Bh3 19.Re1 Qc8 20.Qf3 Bf5 21.Bf5 Qf5 22.g4 Qe4 Black plans d4 (22...Qe6 23.h3+=) 23.Qe2 (23.Qe4!? de4 24.Rac1=) 23...d4 24.d3 Qd5 25.e4 (25.ed4!? cd4 26.Qf2=) 25...Qe6–/+ 26.Nc4 Bf4 27.h3 h5 (27...Nd5 28.Bc1 Nc3 29.Qf3 Bc1 30.Rac1–/+) 28.Rf1 (28.Qf3 Bb8 29.gh5 Nd7+=) 28...Bh6 29.Rf5 hg4 30.hg4 Nd7 31.g5?? (better is 31.Raf1 f6 32.Rh5+=) 31...Qf5!!–+ 32.gh6 (32.ef5 Re2 Pinning (32...Re2 Deflection; 32...Re2 Clearance)) 32...Qg5 33.Kf1 Re6 34.Bc1 Qg3 (34...Qg3 35.Bf4 Qf4 36.Qf2 Qh6–+) 0–1. Meckel,Helmut (1865) – Wagner,Rai (2090), Bonn–Bad Godesberg, 2013.

7.Nf3 Be7 8.ba6 ba6 9.Nc3 +=.

7.Nf3 g6 8.Nc3 (8.g4 Rg8 9.g5 ab5 10.gf6 bc4=) 8...Bg7 9.Qc2 (9.cd5 Nd5 10.Rb1 0–0=) 9...0–0 10.d4 (10.ba6 ba6 (worse is 10...Ra6 11.cd5 Rd6 12.de6 Re6 13.Bb5+/–) 11.Rb1 Rb8=) 10...ab5 (10...Qc7 11.Qb3+=) 11.Nb5 Ng4 (11...Ne4 12.Bd3 Qa5 13.Bc3 Nc3 14.Qc3–/+) 12.Qc1 (12.Qd2 Ndf6+=) 12...b6 (12...cd4 13.Bd4 Qa5 14.Nd2 Bd4 15.ed4 dc4 16.Qc4+=) 13.Bd3 (13.dc5 Bb2 14.Qb2 Nc5–/+) 13...Ba6 (13...cd4 14.ed4 dc4 15.Bc4+=) 14.h3 (14.0–0 dc4 15.Bc4 Rc8+=) 14...Nh6 (14...Ngf6 15.0–0+=) 15.g3 (15.a4!?+=) 15...Bb5–/+ 16.cb5 Qc7 Black prepares c4 (16...Rc8 17.Bc3–/+) 17.Rh2 (17.e4 c4+=) 17...c4–/+ 18.g4 (18.Bb1 Nf5–/+) 18...Ra7 (18...Qa7 19.g5 cd3 20.gh6–/+) 19.Rc2 (19.Bb1 Rc8+=) 19...Rfa8 (19...Qd6 20.Be2–/+) 20.a3 Ra4 (20...Qd6 21.Bf1+=) 21.Rc3 R4a5 22.Bc2 Rb5 23.Kf2 (23.e4 f5 24.gf5 ef5–/+) 23...f6 (23...f5 24.g5 Nf7 25.Kg2–+) 24.Rb1 Nf7 (24...Rba5 25.e4–/+) 25.Ba1 (better is 25.f5!? Nf8 26.e4–/+) 25...Nd6–+ 26.Rb4? (better is 26.a4 Rb1 27.Qb1–+) 26...Rb4 27.ab4 Nb5 28.Bd1 Nc3 29.Bc3 b5 30.h4 Qa7 31.Bc2 Qa3 32.Qd2 Nb6 33.Ne1 Na4 34.Ba4 Ra4 35.e4 Qb3 (35...Qb3 36.Qe3 de4 37.Qe4 Ra2 (37...Qc3?! 38.Qe6 Kf8 39.Qc8 Ke7 40.Qc7 Ke8 41.Qc8 Kf7 42.Qd7 Kg8 43.Qe6 Kf8 44.Qc8 Kf7 45.Qd7 Kg8 46.Qe6=) 38.Kf1 h5 (38...Qc3?! 39.Qe6 Kf8 40.Qc8 Ke7 41.Qc7 Ke8 42.Qc8 Kf7 43.Qd7 Kg8 44.Qe6 Kf8 45.Qc8 Kf7 46.Qd7 Kg8 47.Qe6=) 39.Qe6 Kh7–+; 35...de4 36.Qe3 f5 37.h5–+) 0–1. Williams,Barry M – Coghini,Phillip G, corr NZCCA TT, 2001.

6.c4 Bd6

7.Nf3 0–0 8.Be2 d4 9.ed4 cd4 10.Nd4 Bf4 11.0–0 Qc7 12.Nf3 (12.g3 Be5 13.Qb3 Bd6+=) 12...b6 13.Qe1 (13.g3 Bd6+=) 13...Bb7 14.g3 Bh6 15.d4 (15.Nc3!?–/+) 15...Ng4–+ 16.Qc3? (better is 16.Na3 Ne3 17.Qc3–+) 16...Ndf6 17.Nbd2 Nh5?? (better is 17...Be3 18.Kg2 Rad8–+) 18.Kg2?? (better is 18.Ng5! Bg5 19.Bg4 Ng3 20.Qg3 Qg3 21.hg3 Bd2 22.Kf2–/+) 18...Nh2!–+ 19.d5 (19.Kh2 Qg3 Combination) 19...Qg3 20.Kh1 Ng4 (20...Ng4 21.Ne4 Qh3 22.Kg1 Ng3 23.Ng3 Qg3 24.Kh1 ed5–+) 0–1. Dernowoj – Sokolow, 11.corr–WM–sf (year?).

7.Nf3 dc4 8.Na3 Nb6 (8...0–0 9.Bc4 Be7 10.0–0=) 9.Nc4 Nc4 (9...Be7 10.d4=) 10.Bc4+= 0–0 11.Ne5 (11.Qc2 Qe7+=) 11...Ne4= 12.Nf3 Be7 (12...b6 13.0–0=) 13.Qc2+= Nf6 (13...Bf6 14.Be5 Be5 15.fe5+= (worse is 15.Ne5 Qh4 16.Ke2 Qf2 17.Kd1 Qg2–/+)) 14.Ne5 (14.Ng5 h6 15.Bf6 hg5 16.Be7 Qe7+=) 14...Qc7 (14...Nd5 15.0–0=) 15.Bd3 (15.0–0 Rd8+=) 15...h6 (15...Qd6 16.Nc4 Qd8 17.0–0+=) 16.h4 (16.0–0 Qd6+=) 16...Bd7= 17.g4 Nd5 18.g5 f5 (18...Nb4 19.Bh7 Kh8 20.Ng6 fg6 21.Qg6 e5 22.Be5 Nc2 23.Qc2 Bd6 24.Bg7 Kg7 25.Qg6 Kh8 26.Qh6 Rf7 27.Bg6 Kg8 28.Bf7 Kf7 29.g6 Ke6 30.g7 Kf7 31.Qh5 Ke7+–) 19.gf6 (19.gh6 gh6 20.Rg1 Kh7 21.Nd7 Bh4 22.Ke2 Qd7 23.Rg7 Qg7 24.Bg7 Kg7 25.Rg1 Kh7 26.Qc5 Rfd8+–) 19...Nf6 (19...Bf6? 20.Bh7 Kh8 21.Ng6 Kh7 22.Nf8 Kg8 23.Bf6 Nf6 24.Nd7 Nd7 25.Qc4+–) 20.Ng6 Rf7 21.Ne7 Re7 22.Bf6 gf6 23.Rg1 Rg7? (better is 23...Kf8 24.Rg6 Rf7+/–) 24.Bh7 Kh8 25.Rg7 Kg7 26.Qg6 Kh8 27.Qh6 Bc8 28.Be4 Kg8 29.Kf2 Qd6 (29...Qg7 30.Rg1 Qg1 31.Kg1 f5 32.Qg6 Kf8+–) 30.Rg1 Kf7 31.Rg7 Ke8 32.Qh8 Qf8 33.Bg6 Kd8 34.Qf8# 1–0. Stabenow,Juergen – Gerber, corr DDR, 1985.

7.Nf3 d4 8.Be2 +=.

6.c4 Ne4

7.Nf3 Ndf6

8.Be2 dc4 9.Bc4 Nd6 10.Be2 =.

8.Be2 Bd7

9.d3 Qa5 10.Nbd2 (10.Nfd2 Nd6=) 10...Nd6 (10...Nc3 11.Bc3 Qc3 12.Ne5=) 11.Bf6 (11.0–0 Nf5 12.Bf6 gf6=) 11...gf6= 12.0–0 Nf5 13.Nb3 (13.Qc1 Qb6 (13...Ne3? 14.Nb3 Qc7 15.Qe3+–) 14.Nb3 d4 15.ed4 cd4=) 13...Qc7 14.Qc1 (14.Qd2 d4 15.ed4 cd4=) 14...Bd6 (14...d4 15.ed4 cd4 16.Rf2+= (16.Nfd4? Nd4 17.Qb2 Bc5 18.Nc5 Qc5–+)) 15.g3 (15.cd5 Bb5 16.e4 Bf4=) 15...h5 (15...Rg8!? 16.Kf2 dc4 17.dc4 Nh6=) 16.e4+= de4 17.de4 Nd4 18.Nfd4 cd4 19.c5 (19.Nd4? Bc5 20.Qe3 e5–+) 19...Be7 20.Qc4 (20.Nd4? Qc5 (20...Bc5?! 21.Kg2=) 21.Qb2 e5–+) 20...e5 (20...h4 21.Qd4 hg3 22.hg3+=) 21.f5 (better is 21.fe5!? Be6 22.Qa4 (22.Qd4?! Bb3 23.c6 fe5 24.Qd7 Qd7 25.cd7 Kd7 26.ab3 f6=) 22...Bb3 23.ab3 Qc5 24.b6 Kd8 25.Rfd1 Qb6 26.Rd4 Kc8 27.Kg2+/–) 21...a6 (21...h4 22.g4=) 22.a4 Kf8 (22...h4=) 23.g4 (better is 23.ba6!? ba6 24.Qd3=) 23...hg4–/+ 24.Bg4 The passed pawn on h2 will quickly become a dangerous weapon 24...Rg8 25.h3 Rg5 (25...Ke8 26.Kh2+=) 26.Kh2 Be8 27.Rg1 ab5 28.ab5 Rc8 Pawn c5, live or die! 29.Rgc1 White fights for the initiative 29...Qd7 30.Be2+/– Kg8 31.Ra7+– Kh7 32.h4 Rg8 33.c6! Qd6 34.Rb7 Bf8? 35.Rd7 Qa3 36.Rf7! (36.Rf7 Rg7 37.Rg7 (37.Rf6?! Be7 38.Re6 Bf7+–) 37...Bg7 38.Rc2+–) 1–0. Kleinke,Uwe – Spantig,H, corr DDR–ch I730, 1988.

9.cd5 ed5 10.0–0 =.

9.cd5 Nd5 10.Qc2 (10.0–0 f6+=) 10...Nd6= 11.a4 f6 (11...Nb4 12.Qb3=) 12.0–0 Be7 (12...Rc8 13.Rc1=) 13.Ng5 (13.Nc3 Rc8=) 13...Kf8 (13...Nb4 A) 14.Qc5 Nf5 15.Qc4 Rc8= (worse is 15...fg5 16.Bh5 g6 17.Bh8 gh5 18.fg5+/–); B) 14.Qc3=) 14.e4 (14.Nf3 Rc8+=) 14...Nb4= 15.Qc3 White intends e5 (15.Qc5 Nf7 16.Qc3 Rc8 17.Nf7 Qb6 18.Qe3 Qe3 19.de3 Kf7+/–) 15...h6+= 16.Qh3 (16.Nf3 Ne4 17.Qb3=) 16...fg5+= 17.Qc3 Threatening mate... how? 17...Bf6 (17...Ne8!? 18.fg5 Kg8+=) 18.e5+/– Nd5 (18...Ne4 19.Qc4 gf4 20.ef6 Nf6 21.Bf6 gf6 22.Qc5 Qe7 23.Qc7=) 19.Qc5+– Be7 (19...Qc8 20.Qc8 (20.Qd6? Be7–+) 20...Nc8 21.fg5 hg5 22.ef6 Nf6 23.Be5+/–) 20.ed6 Bf6 21.fg5 (21.Bf6 gf6 22.Bf3 b6+–) 21...hg5 22.Nc3 Nf4 23.Qe3 Rc8 (23...Ne2 24.Ne2 Kg8 25.Be5+–) 24.g3 (24.Qa7 b6+–) 24...Nh3? (better is 24...Ne2!? 25.Ne2 Ke8 26.Bf6 gf6+–) 25.Kg2 Kg8 (25...Qa5 26.Qe4 g4 27.Qg6+–) 26.Bg4 (26.Qa7 b6+–) 26...e5 27.Bf3 Qe8 (27...b6 28.Bb7 Rh6+–) 28.Bb7 Qh5 29.Rh1 (29.Rfb1 Nf4 30.gf4 Qh2 31.Kf1 ef4 32.Bd5 Kf8 33.Qa7 Qh3 34.Ke1 Qg3 35.Kd1 Qg4 36.Kc1 Rh2+/–) 29...Nf4 30.Kf2 Bd8 31.Bc8 Bb6 32.Qb6 ab6 33.Bd7 Nd3 34.Ke3 Nb2 35.Be6 Kh7 36.h4 g4 37.Ne4 Kh6 38.Rhf1 Qe8 39.Ng5 e4 40.Rac1 Qb8 41.Nf7 Kh5 42.Rf5 (42.Rf5 Kg6 43.Rg5 Kh7 44.Rh5 Kg6 45.Rh8 Qh8 46.Nh8 Kf6 47.d7 Ke5 48.Rc6 Nd1 49.Ke2 Nc3 50.dc3 g6 51.d8Q e3 52.Qd4#) 1–0. Cornu – Richner, corr, 1963.

6.Nf3 b6

7.Be2 Bb7 8.0–0 (8.Nc3 Be7=) 8...Be7 9.d3 (9.Ne5 0–0=) 9...0–0+= 10.c4 Qc7 (10...a6 11.Nc3=) 11.Qb3 (11.Nc3 dc4 12.dc4 Rfd8=) 11...Ng4 (11...d4 12.ed4 Qf4 13.Bc1+=) 12.Bc1 (12.d4 a6+=) 12...Bf6 13.d4 cd4 (13...dc4 14.Qc4 (worse is 14.Bc4 cd4 15.Nd4 e5–+) 14...a6 15.Na3+=) 14.Nd4 dc4 (better is 14...Nh6+=) 15.Bc4 (15.Qc3 Nh6 16.Qc4 Rfc8–/+) 15...Nc5 (15...e5!? 16.Ne6 fe6 17.Be6 Kh8 18.Bg4 ef4–+) 16.Qd1+= Nh6 (16...e5 17.fe5 Ne5 18.Be2+=) 17.Bb2 Nf5 (17...Rfd8 18.Qc2 Be4–/+) 18.Qe2 (18.Qc1 Nd6+=) 18...Nd4 (18...Na4 19.Bd3 Ne3 20.Ne6 fe6 21.Bf6 Ng2–+ (21...Rf6?! 22.Qe3 Rd8 23.g3=; 21...Nf1 22.Qe6 Qf7 23.Qf7 Kf7 24.Bd4–+)) 19.Bd4= (worse is 19.ed4 Na4 20.Na3 Qd6–+) 19...e5 (19...Qe7 20.Nc3=) 20.fe5 Be5 21.Be5 Qe5 22.Nd2 Rae8 Attacks the isolani on e3 23.Rae1 Re7 24.Nf3 Qh5 25.Nd4 Qg6 26.Nf5 Re5 (26...Rc7 27.Rf4=) 27.Ng3 (27.Nh4 Qh6 28.Qf2 Bd5 29.Bd5 Rd5=) 27...Ne6 (27...Ne4 28.Ne4 Be4 29.Rd1=) 28.Qf2 (28.Rd1 Qg5+=) 28...h5 (better is 28...Bd5 29.Bd5 Rd5=) 29.Re2? (better is 29.e4=) 29...h4–+ 30.Nh1 Ng5 31.Qh4 Re4 32.Bd3 Rh4 Threatening mate: Nh3 33.Bg6 f6?? 34.Ng3+/– Rb4 35.Nf5 Rd8 36.Nd4 Nf7 37.Rc1 Ne5 38.Bf5 Rbd4 39.ed4 Rd4 40.Rc7 Bd5 41.h3 Bc4? 42.Re5! (42.Re5 fe5 43.Rc4+–) 1–0. Kjaerstad,Eivind J – Mella,A, corr Norway, 1968.

7.Be2 Be7 8.0–0 0–0 9.c4 Bb7 10.Ne5 dc4 11.Bc4 Bd6 12.Nd7 Nd7 13.Nc3 Re8 14.d4 cd4 15.ed4 (15.Ne2 Rc8 16.Rc1 Bd5 17.Qd4 Nf6=) 15...Nf6 (15...Qc7 16.Bd3–/+) 16.Qb3 Ne4 (16...Qc7 17.Bc1=+) 17.Rad1 (17.Ne4 Be4 18.Rae1 Bb7=) 17...Rc8 18.Ne4 Be4 19.d5 ed5 20.Bd5 Bd5 21.Rd5 Qc7 (22.Be5 Re6=; 21...Bc5 22.Kh1 Qh4 23.Rg5=) =. Bivens,William – Hasler,Ulrich, corr ICCF–TT/4/90, 1991.

7.Be2 Be7 8.0–0 0–0 9.d3 Bb7 (better is 9...Qc7+=) 10.Nbd2? (better is 10.a4+=) 10...Ng4–+ 11.e4 (11.Qc1 Ne3 12.Re1 Nf5–+) 11…Ne3 (11...Ne3 12.Qe1 Nf6–+) 0–1. Fischman – Gaile, Riga, 1976.

7.Be2 Be7 8.0–0 Bb7 9.c4 0–0 10.Ne5 Ne4 11.Bf3 (better is 11.d3 Nd6 12.cd5 ed5 13.Qb3=) 11...f6?? (better is 11...Ne5 12.Be5 dc4–/+) 12.Nc6+– Bc6 13.bc6 The passed pawn on c6 quickly leads to threats 13...Nb8 14.cd5 Nd6 (worse is 14...Qd5 15.c7 Nc6 16.d3+–) 15.de6 The passed pawn on e6 will quickly become a dangerous weapon 15...Qc7 16.Nc3 Nc6 17.Nd5 Qc8 18.Ne7 Ne7 19.Ba8 Qa8 20.Qf3 (20.d3 c4+–) 20...Qc8 21.Qg4 Nef5 (21...Qc6 22.Rfe1+–) 22.e4 Nh6 23.Qh3 Ne4 (23...Re8 24.f5 Ne4 25.Rae1+–) 24.Rae1 (better is 24.e7 Re8 25.Qc8 Rc8+–) 24...f5? (24...Nd6+–) 25.d3 (25.e7!? Re8 26.d3 Nd6+–) 25...Nd6 Black plans c4 26.Qe3 (26.Qh4 Nb5+–) 26...Ng4 27.Qe2 (better is 27.Qf3 Ne8+–) 27...c4?! (27...Re8 28.h3 Nf6 29.Bf6 gf6 30.Rf3+–) 28.h3 (28.Ba3!? cd3 29.Qd3 Ne4 30.Bf8 Kf8+–) 28...Qc5 (28...Nf6 29.Ba3 Nfe8+–) 29.d4 (29.d4 Qb4 30.hg4 fg4 31.e7+–) 1–0. Stabenow,Juergen – Klein, corr DDR, 1979.

6.Nf3 Bd6

7.Be2 b6 8.0–0 Bb7 9.c4 0–0 10.Qe1 Rc8 11.Qh4 Be7 12.Qh3 Ne4 13.d3 Nd6 14.Ne5 f5 15.Nd2 Ne5 16.fe5 Nf7 17.Rad1 Bg5 18.a4 Rc7 19.Rfe1 d4 20.ed4 cd4 21.Nf1 Bf4 22.g3 Be5 23.Nd2 Ng5 24.Qf1 Qd6 25.Bf3 Nf3 26.Nf3 Bg3 27.hg3 Qg3 28.Qg2 Qf3 29.Qf3 Bf3 30.Rd2 Rf6 31.Kf2 Bb7 32.Bd4 Rg6 33.Ra1 Rg2 34.Ke1 Rd7 35.Bf2 e5 36.a5 Rh2 37.Raa2 Bf3 38.Bb6? Rd2 39.Kd2 ab6 40.ab6 Kf7 41.c5 Rb7 42.Ra7 Ra7 43.ba7 Ba8 0–1. Sternik – Kowalczyk, corr Poland 1985–86.

7.Be2 b6 8.a4 Qc7 9.c4 Bb7 10.Qc2 0–0 11.0–0 e5 12.fe5 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Ra3 d4 16.Bf3 Bf3 17.Rf3 Rad8 18.Qf5 Qf5 19.Rf5 Rfe8 20.ed4 Rd4 21.d3 Re3 22.Rf3 Rf3 23.gf3 Nd7 24.Kf2 Kf8 25.Ke3 Rh4 26.Ra2 Ne5 27.Rf2 f5 28.Nc3 Kf7 29.a5 Rh3 30.ab6 ab6 31.Ke2 g5 32.Nd5 Rh6 33.Ne3 Re6 34.Kd2 f4 35.Nd5 Kg6 36.Kc3 Nd7 37.Ra2 Kf5 38.Ra7 Ne5 39.Ne7 Kf6 40.Nd5 Kf5 41.Ra6 Nf3 42.Nb6 g4 43.Nd7 g3 44.hg3 fg3 45.Ra2 Rg6 46.Rg2 h5 47.b6 Nd4 48.Nc5 Nc6 49.Ne4 Kf4 50.Rg3 Rg3 51.Ng3 Kg3 52.d4 h4 53.d5 Nb8 54.c5 h3 55.c6 Nc6 56.dc6 h2 57.b7 h1Q 58.b8Q Kg4 59.Qg8 Kf5 60.Qc4 Qh3 61.Kb4 Kf6 62.Qc5 Qc8 63.Qd6 Kf7 64.Kc5 Qh3 65.Qd5 Ke7 66.Kb6 1–0. Stabenow – Ohaupt, corr DDR 1972.

7.Be2 Qe7 8.Ne5 0–0 9.0–0 Ne8 10.c4 f6 11.Nd7 Bd7 12.Nc3 d4 13.ed4 cd4 14.Ne4 e5 15.f5 Ba3 16.Ba3 Qa3 17.Rf3 Qe7 18.c5 g6 19.Bc4 Kh8 20.g4 Rc8 21.Rc1 Ng7 22.Qf1 gf5 23.gf5 Nh5 24.Bd5 Rc7 25.Bb7 Bb5 26.Qb5 Rb7 27.Qf1 Rb2 28.Rb3 Rb3 29.ab3 Rg8 30.Kh1 Nf4 31.c6 d3 32.Rc4 Qg7 33.c7 1–0. Kuehn – Barz, corr DDR 1978.

7.Be2 0–0

8.0–0 b6 9.c4 dc4 (9...Bb7 10.Nc3=) 10.Qc2 Bb7 11.Na3 Nd5 12.Nc4 N7f6 13.Nfe5 Ne8 (13...Nb4 14.Qb3+/–) 14.e4 (better is 14.f5 Nb4 15.Qb1+/–) 14...Ndf6? (14...Nb4!? 15.Qb1 f6+=) 15.d3 (15.Nc6 Bc6 16.bc6 Be7+–) 15...Bc7 (15...Qc7 16.a4 Be7 17.a5+/–) 16.a4 (16.Nc6!? Bc6 17.bc6 b5+–) 16...Nd7+/– 17.d4 Ne5 18.fe5 cd4 19.Ba3 Rc8 (19...a6 20.Qd3+/–) 20.Bf8 Kf8 21.Qd3 Bb8 (21...Qh4!? 22.Qd4 Rd8+/–) 22.Rad1+– Rc4 23.Qc4 Be5 24.Qe6 f6?? (better is 24...Bf6 25.Qh3 h6+–) 25.Qe5 1–0. Jacewicz,Grzegorz (2160) – Maier,Ralf (2055), remoteschach.de, 2010.

8.0–0 b6 9.Ne5 Qc7 10.d4 cd4 11.ed4 Ne4 12.Nd2 Nc3 13.Bc3 Qc3 14.Nc6 Qe3 15.Rf2 Nb8 (< 15...Bf4 16.Nf1 Bh2 17.Nh2+/–) 16.Nf1 Qa3 17.c4 (17.Rf3 Qa4 18.Nb8 Rb8=) 17...Nc6 18.bc6 dc4 19.Bc4 Ba6 (19...Be7 20.Qf3=) 20.Ba6 Qa6 21.Ne3 Rac8 22.Rc1 b5 23.Qf3 Qa3 24.Rd1 Bc7 25.Kh1 Bb6 26.f5 Rc7 27.Qf4 e5 28.Qe5+= Re7 29.Nc2 Re5 30.Na3 Bd4 31.Rc2 Bb6 32.c7 Rc8 33.g4 h5 34.gh5 Rc7 35.Rc7 Bc7–/+ 36.Rd7 0–1. Gretencord,Ulrich – Lavrentyev,Yury Grigorievich, EM/J50/P194 ICCF Email, 2001.

8.0–0 Qc7 9.c4 e5 10.fe5 Ne5 11.Ne5 Be5 12.Be5 Qe5 13.Nc3 (13.Na3 Be6+=) 13...d4–/+ 14.ed4 Qd4 15.Kh1 Be6 16.b6 Bc4 17.ba7 Ra7 18.Nb5 (18.Bc4!? Qc4 19.Qb1–/+) 18...Bb5–+ 19.Bb5 b6 20.a4 Ne4 21.Qe1 Nd6 (21...Nd2?! 22.Rd1 Rd8 23.Rf2+=) 22.Qe3?? (better is 22.Qb1–+) 22...Nb5 0–1. Delcatto – Eleazar, playchess.de, 2002.

8.0–0 Re8 9.Ne5 Qc7 10.d4 b6 (10...a6 11.ba6 ba6 12.Nd2+=) 11.Nd2 (11.Nd7 Qd7 12.dc5 Bc5+=) 11...a6 12.a4 c4 13.c3 ab5 (worse is 13...Ne5 14.fe5 Be5 15.de5 Qe5 16.Rf3=) 14.ab5 Bb7 (14...Ra1 15.Qa1 Bb7 16.Ba3=) 15.Qc2 Nf8 (15...Red8 16.Bf3+=) 16.Bf3= N6d7 (16...Ng6 17.g3+=) 17.g3 (17.e4 f6 18.Nd7 Qd7+=) 17...Ne5 18.fe5 Be7 19.e4 Qd7 20.ed5 ed5 21.Bg2 (21.Ra8 Ra8 (21...Ba8?! 22.Qa4+=) 22.Bh5 f6–/+) 21...Bg5 (21...Ra1 22.Ra1 Qb5 23.Ra7+=) 22.Nf3 Be3 23.Kh1 Qb5 24.Nh4 g6 (24...Ra1 25.Ba1 g6 26.Qe2+=) 25.Ra8= Ra8 26.Bc1 Bc1 27.Rc1 (27.Qc1 Bc8+=) 27...Ra3+= 28.Qf2 (28.Kg1 Qa5+=) 28...Bc8 29.Nf3 Bf5 30.Ng5 Ra7 (30...Qa5 31.Rf1 Ra1 32.g4 Rf1 33.Bf1–/+) 31.Rf1 Qd7 32.Qb2 Qc6 33.Kg1 h6 34.Nh3= Ne6 35.Nf2 Kg7 36.Nd1 Bd3+= 37.Re1 Ng5 38.Nf2 Bf5 39.h4 Ne4 40.Ne4 Be4 41.Bh3 b5 42.Qf2 Qa6 43.Bg2 Qa3 44.Qf6 Kh7–+ 45.e6 Qd6 (45...Qd6 46.Be4 de4–/+ (worse is 46...Qg3 47.Kf1 de4 48.e7 Qh3 49.Kg1 Qg4 50.Kh1 Qh3 51.Kg1 Qg3 52.Kf1 Qd3 53.Kg1 Qg3 54.Kf1=)) 0–1. Blankenberg,Bruno – Boronka,Joseph, corr TKM/A008, 2000.

8.0–0 Re8 9.Ne5 Qc7 10.Nd7 Nd7 11.Nc3 b6 12.Bf3 Bb7 13.Qe2 Nf6 14.g3 Rad8 15.Qg2 Be7 16.d3 Rd7 17.a4 (17.Ne2 c4 18.Be5 Qc5=) 17...Red8 18.Rae1 h6 19.e4 d4 20.Nb1 a6 21.Na3 a5 (21...Ra8 22.g4=) 22.Nc4 Bf8 23.Ne5 Re7 24.g4 (24.c3 dc3 25.Bc3 Ree8=) 24...Nh7 25.h4 Ree8 26.g5 hg5 27.hg5 g6 28.Kf2 Bg7 29.Qg3 Nf8 30.Ng4 Nd7 31.e5 Bf3 32.Qf3 Kf8 33.Nf6+– Ke7 34.Ne8 Re8 35.Rh1 Rg8 36.Qe4 Bh8 37.c3 dc3 38.Bc3 1–0. Grund,Karl – Gerold, corr ICCF, 1972.

7.Be2 Qc7

8.0–0 0–0 9.h3 (9.Nc3 d4 10.ed4 cd4 11.Nd4 Bf4+=) 9...e5+= 10.fe5 Ne5 11.Ne5 (11.Nc3 Rd8+=) 11...Be5–/+ 12.d4 Bh2 13.Kh1 Ne4 14.Rf3 Bg3 (14...Be6–/+) 15.Nd2? (better is 15.dc5!? Nf2 16.Rf2 Bf2 17.Qd4+=) 15...Nf2–+ 16.Rf2 Bf2 17.Nf1 (17.dc5 Be3 18.Nb3 Qg3–+) 17...c4 18.Bf3 Be6 (18...Qd7 19.Rb1–+) 19.e4 (19.Qe2 Bh4–+) 19...Qd7 (19...de4 20.Be4 c3 21.Ba3–+) 20.Qe2 (20.Qd2 de4 21.Be4 Bh4–+) 20...Bh4 (20...Qb5 21.Bc3 Bh4 22.Ne3–+) 21.a4 Rfe8 22.e5 (22.Bc3 a6 23.b6 a5–+) 22...a6 23.b6 a5 24.Bc3 Bd8 25.Ne3 Bb6?? 26.g4? Red8 27.Qg2 Ra6 28.h4 Bc7 29.g5 b5 30.Ng4 Bg4 31.Bg4 Qe8 32.Qf3 b4 33.Bd2 Bb8 34.Rf1 Ra7 35.h5 Rb7 36.h6 Qe7 37.hg7–/+ Kg7 38.Qf6 Qf6 39.gf6 Kh8 40.Bh6 Rg8 41.Bg7?? Rg7–+ 42.fg7 Kg7 43.Bf3 Rd7 44.Rg1 Kf8 45.Bg4 Rd8 46.Rf1 Ke7 47.Bh5–/+ Rf8 48.Rf6? Bc7 49.Kg2? b3–+ 50.c3? Bd8 51.Bd1? Rg8 52.Kh2 Rg6 53.Rf3 Ke6 54.Rf4 Bg5 55.Rf3 Bd2 56.Kh1 h5 57.Kh2 h4 58.Kh1 Rg3 59.Rf6 Ke7 60.Bh5 Rg7 61.Rb6 Bc3 62.Rb7 Kd8 63.e6 b2 64.ef7= Rf7 65.Bf7+/– Bd4? 66.Bd5+– c3 67.Be4 Bc5 68.Bc2 Bb4 69.Kg2 Kc8? 70.Rh7 Bd6 71.Rh4 Kb7 1–0. Kasten,Jorst – Berg,Dietmar (2025), Gladbeck–ch, 1999.

8.0–0 e5 9.fe5 Ne5 10.Ne5 Be5 11.Be5 Qe5 12.Nc3 0–0 Black intends d4 13.Bf3 Rd8 Black prepares the advance d4 14.a4 d4 15.ed4 Qd4 16.Kh1 Qd2 17.Qd2 Rd2 18.Rad1 Rd1 19.Rd1 Bf5 20.Bb7 Re8 21.h3 Bc2 22.Rc1 Bd3 23.Nd5 Nd5 24.Bd5 Rc8 25.Kg1 Kf8 (better is 25...c4!?–/+) 26.Kf2+= Ke7 27.Ke3 Bf5 28.a5 (28.Bc6 Bd7 29.Rc5 Rc7=) 28...Kd6 (28...Bd7 29.b6 ab6 30.ab6+=) 29.Bf7= Be6 ½–½. Posidonio – Daiva, playchess.de, 2004.

8.0–0 e5 9.g3 0–0 10.a4 a5 11.Nh4 Nb6 Black prepares the advance d4 12.f5 (12.fe5 Be5 13.Be5 Qe5+=) 12...d4 13.c4 Rd8 14.d3 e4 15.ed4 cd4 16.Kg2 Be7 17.Nd2 ed3 18.Bd3 Nbd7 (18...Bb4 19.Rf4 Bc3 20.Qc2=) 19.Rc1 (19.Bd4!? Nc5 20.Bc5 Bc5 21.Qf3=) 19...Ne5 20.Be2 b6 21.Kg1 (21.Ndf3 Bb7 22.c5 bc5 23.Bd4 Neg4–+) 21...Bb7 22.Bf3 Rac8 23.Bg2 (23.Bb7!? Qb7 24.Nhf3–/+) 23...Nfg4–+ 24.Bb7 (24.Rf4 Bg5–+) 24...Qb7 25.Ng2 Bg5 26.Qe2 Bd2 27.Qd2 Nf3 28.Rf3 Qf3 29.Rf1 Qb3 (29...Nh2 30.Rf2 Qg3 31.Qf4 Qf4 32.Rf4 Rc4 33.Kh2 Ra4 34.Ne1–+) 30.Rc1 (30.Bd4 Rc4 31.Re1 h5–+ (31...Rcd4?? 32.Qd4 Rf8 33.Qg4+–; 31...Qa4 32.Bc5 Rb8 33.Qd6+=; 31...Ra4?! 32.Bb6 Ra8 33.Qd7–+)) 30...Ne3 (30...Ne5 31.Qc2 Qc2 32.Rc2 Rc4 33.Ne1 Ra4 34.Rd2–+) 31.Ba1 (31.f6 Ng2 (31...Nc4 32.Qg5 Qg3 33.hg3 Kf8 34.Qg7 Ke8 35.Qg8 Kd7 36.Qf7 Kd6 37.Qe7 Kd5 38.Nf4) 32.Kg2 Rc4–+ (32...Qa4 33.Qg5 Qc2 34.Rc2 Kf8 35.Qg7 Ke8 36.Re2 Kd7 37.Qf7 Kd6 38.Qe7)) 31...Ng2 32.Kg2 Rc4 (32...Qa4?! 33.f6 Qb4 34.Qd3 gf6 35.Rc2–+) 33.Kh3 (33.Rc4 Qc4 34.Qd1 d3–+) 33...Rc1 34.Qc1 Qd5 (better is 34...Qa4!? 35.Qc7 Rf8 36.Qc1–+) 35.Qf4 f6 36.Bb2 (36.Qg4 Rc8 37.Bd4 Rc2 38.Bf6 Qg2 39.Kh4 Qh2 40.Qh3 Rc4 41.g4 Qh3 42.Kh3 gf6–+) 36...Qd6 (36...d3 37.Bc3 d2 38.Bd2 Qd2 39.Qc4 Kh8 40.Qc7–+) 37.Qc1 (37.Qd2 d3 38.Bc1 Qc5–+) 37...d3 38.Qc4 Qd5 39.Qg4 Rd6 (39...d2 40.Bf6 Rd7 41.Qd1 Qf5 42.Kg2 Qe4 43.Kf2–+) 40.Ba3 (40.Bc3 d2 41.Bd2 Qd2–+) 40...Rd7 (better is 40...d2 41.Bd6 d1Q 42.Qd1 Qd1–+) 41.Qf4 (41.Bc1 d2 42.Bd2 Qd2–+) 41...h6 (better is 41...d2 42.Be7 Re7 43.Qb8 Kf7 44.Qf4 d1Q 45.Kh4 Re4 46.g4 Rf4 47.h3 Q5d3 48.Kh5 Qh3) 42.Qd2 Qf3 (42...Qf3 43.Bc5 Rd5–+) 0–1. Papp,Jozsef1 (1915) – Lorinc,Sandor (2205), HUN–chT2 Toth, 2004.

8.a4 a6 9.c4 a5 10.0–0 b6 11.Na3 Bb7 12.d4 Ne4 13.Rc1 Rc8 14.Ne5 f6 15.Nc6 Bc6 16.bc6 Qc6 17.Nb5 Bb8 18.f5 0–0 19.cd5 (better is 19.fe6!? Qe6 20.cd5+=) 19...ed5–/+ 20.Qe1 c4 21.Bf3 Rfe8 22.Rc2 Nf8 23.g4 h6 24.Bg2 Nh7 25.Qd1 Nhg5 26.h4 Nf7 27.Be4 Re4 (27...de4?! 28.Qe2–/+) 28.Qf3 h5! 29.Nc3 (29.gh5 Rh4 Pinning (29...Rh4 Deflection)) 29...Rg4 30.Rg2 Qd6 31.Nd5 Qh2 (31...Qh2 32.Kf2 Rg2 33.Qg2 Bg3 (33...Qh4?! 34.Ke2 Re8 35.Rg1=) 34.Kf3 Qh4–/+) 0–1. Zachariassen,John – Antreasyan,Erol, Copenhagen op2, 1993. (=1.f4 d5 2.b4 Nf6 3.Bb2 e6 4.b5 c5 5.Nf3 Nbd7 6.e3 Bd6 7.Be2 Qc7)

8.a4 e5 9.fe5 Ne5 10.Ne5 Be5 11.Be5 Qe5 12.Na3 Ng4 13.g3 h5 14.Rb1 f5 15.Bg4 fg4 16.Qe2 Be6 17.d4 Qe4 18.Rf1 c4 19.Rf4 Qh7 20.e4 g5 21.Rf2 Qe4 22.Nc4 0–0–0 23.Qe4 de4 24.Rb4 Kb8 25.Ne5 h4 26.Nf7 hg3 27.hg3 e3 28.Rf1 Bf7 29.Rf7 Rde8 30.Rf5 Rh1 31.Rf1 Rh2 32.Rc4 e2 33.Rg1 Re3 34.Rb4 Rc3 35.Kd2 Rc2 ½–½. Stabenow – Augustat, corr 1992.

8.c4 0–0 9.a4 b6 10.0–0 Bb7 11.Nc3 e5 12.cd5 Nd5 13.Nd5 Bd5 14.Qc2 ef4 15.e4 Rae8 16.Bd3 c4 17.ed5 cd3 18.Qd3 Ne5 19.Be5 Be5 20.Rac1 Qd7 21.Ne5 Re5 22.d6 Re6 23.Rc6 Rd8 24.Rfc1 h6 25.Kf1 g6 26.Re1 Re1 27.Ke1 Qe6 28.Kf2 h5 29.Qd4 g5 30.d3 Qa2 31.Kf1 Re8 32.Rc1 Qd2 33.Ra1 f3 34.gf3 Qh2 35.d7 Qh3 36.Kf2 Qh2 37.Kf1 Qh3 ½–½. Stabenow – Ruppe, corr DDR 1976.

8.c4 b6 9.0–0 Bb7 10.Qe1 0–0 11.Qg3? (11.cd5) 11...d4! 12.Bd3 e5 13.Nh4 Ne4 14.Qe1 Ndf6 15.Nf5 Rfe8 16.Nd6 Qd6 17.Qe2 Rad8 18.Be4 Ne4 19.d3 ef4 20.Rf4 (20.de4 Re4 21.Nd2 Re3 22.Qf2 d3 23.Qf4 Qg6!) 20...Nc3! 21.Qf1 Ne2! 0–1. Sternik – Kranzl, corr ICCF EU–GT–242 1985.

8.c4 b6 9.a4 0–0 10.0–0 =.

8.c4 b6 9.a4 Bb7 10.0–0 d4 (10...0–0 11.cd5 Nd5 12.Nc3=) 11.Ra3 (11.a5 ba5 12.Qa4 a6 13.Qa5 Qa5 14.Ra5 ab5 15.Ra8 Ba8 16.cb5 Nd5=+) 11...e5 12.Qe1 e4=+ 13.Ng5 h6 14.Qh4 Nf8 15.Nh3=+ g5 16.Qe1 g4 17.Nf2= Rg8 18.d3 Qe7 19.Qd2 0–0–0 20.g3 h5 21.a5= h4 22.ab6 ab6 23.Re1 hg3 24.hg3 Ne6 25.Ra7 Kb8=+ 26.Rb7 Qb7–/+ 27.Bf1 de3 28.Qe3 Nd4 29.Bg2? Nc2–+ 30.Qe2 Ne1 31.Qe1 Qd7?? 32.Bf6+/– Rde8 33.Ne4 Bf4? 34.gf4+– Qd3 35.Be5 Re5 36.fe5 Qc4? 37.Nbc3 Qd4 38.Qf2 Rd8 39.Kf1 Qf2 40.Kf2 Re8 41.Nf6 Rd8 42.Bd5 Kc7 43.Kg3 Rh8 44.Kg4 Rh2 45.Nfe4 Kd8 46.Bf7 Ke7 47.Bd5 Rc2 48.Kf5 Rc1 49.e6 Rf1 50.Ke5 Rh1 51.Nd6 (51…Rh5 52.Nf5 Rf5 53.Kf5+–) 1–0. De Cat,Ben – Ludden,Gert Jan, NATO–chT Viborg, 1996.

8.c4 b6 9.cd5 ed5 10.0–0 0–0 =.

8.c4 dc4 9.Na3 =.

5.f4 Be7

6.c4 0–0 7.Nf3 Nbd7 8.d3 Ng4 9.Qd2 Bf6 10.Nc3 Ne3 11.Qe3 d4 12.Qd2 dc3 13.Bc3 e5 14.fe5 Ne5 15.Ne5 Be5 16.Be5 Re8 17.Be2 Re5 18.0–0 Qd4 19.Kh1 Be6 20.Rae1 b6 21.Rf4 Qe3 22.Qe3 Re3 23.Kg1 Rd8 24.Kf2 Re5 25.Bf1 Re1 26.Ke1 Kf8 27.Ke2 g5 28.Rf2 Ke7 29.Ke3 f5 30.g3 Kf6 31.a4 Ke5 32.a5 Rd4 33.ab6 ab6 34.Ra2 f4 35.Kf3 Bf5 36.Re2 Kf6 37.Rd2 h6 38.Kf2 Ke5 39.Re2=+ Kf6 40.Rd2–/+ Be6 41.Ra2 Rd6 42.Ra8 Ke5 43.Re8 fg3 44.hg3 Kd4 45.Rf8 Rd7 46.Rb8 Rd6 47.Rf8=+ Bg4 48.Rf7 Bh5 49.Rh7 Rf6 50.Kg1 Bg4 51.Re7 Bf5 52.g4 Be6 53.Re8 Kc3 54.Rb8 Bg4 55.Bg2 Kd3 56.Bc6 Kc4 57.Rb6 Kb4 58.Rb8 c4 59.Be4 Kc5 0–1. Bungo,G – Ward,Tom, Chicago op, 1997.

6.Nf3 a5 7.a4 b6 8.c4 Bb7 9.Be2 0–0 10.Qc2 Nbd7 11.Nc3 dc4 12.Bc4 Nd5 13.Ng5 Bg5 14.Nd5 ed5 15.Bd5 Bh4 16.g3 Bd5 0–1. Meybohm – Sack, 1990.

6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 0–0 10.Be2 Nbd7 11.0–0 Nb6 12.d3 Qc7 13.c4 Ng4 14.Qd2 f6 15.e4 Bd6 16.Nh4 Nh6 17.Bc3 Na4 18.ed5 ed5 19.Bd1 Nb6 20.Ba5 d4 21.g3 g6 22.Bf3 Bh3 23.Re1 Ra8 24.Na3 Kg7 25.Nc2 Nf5 26.Nf5 Bf5 (worse is 26...gf5 27.Re6+/–) 27.Ra1 Re8 28.Ra3 Re7 29.Qg2 h5 30.Kh1 Kf7 31.Bd5 Kf8 32.Kg1 ½–½. Nemec,Zdenek (1915) – Szabo,Mihaly (2135), RA–2010–0–00103, 2010.

6.Nf3 0–0

7.a4 Ne4+= 8.Bd3 Bh4 9.g3 Bf6 10.Bf6 Nf6 11.0–0 a6 12.Nc3 Nbd7 13.Qb1 a5 14.Kg2 b6 15.Qa2 (15.Qb2 Bb7+=) 15...Bb7 16.Kg1 Qc7 17.Be2 Rfe8 18.Rae1 e5 19.Nd1 (19.fe5 Ne5 20.Ne5 Re5+=) 19...ef4 20.ef4 Ne4 (20...Re7 21.Bd3 Rae8 22.Re7 Re7 23.Qa3–/+) 21.c3 c4 (21...Re6 22.d3 Nef6 23.Ng5+=) 22.Nd4 Ndc5 23.Bf3 Nd3 24.Re3 Qd6 25.Be4 (25.f5 Qf6+=) 25...de4 26.Nf2 Rac8 27.f5 Ne5 (27...Nf2 28.Rf2 Qf6 29.Qc2+=) 28.Rfe1 (worse is 28.Ne4 Be4 29.Re4 Nf3 30.Rf3 Re4–/+) 28...h6 (28...Qh6!?+=) 29.Ne4= Qd5 30.Qc2 (better is 30.Qa3!? Rcd8 31.h3=) 30...Nd3+= 31.R1e2 Nc5 32.Nc6 (32.Nf6 gf6 33.Re8 Kg7 34.Nc6 Rc6 35.bc6 Bc6 36.R8e4 Ne4 37.Qe4 Qe4 38.Re4 Be4 39.Kf2–+) 32...Rc6+= (32...Bc6?! 33.bc6 Qc6 34.Nc5 Qc5 35.Kg2 Re3 36.de3+=) 33.d4?? (better is 33.bc6 Bc6 34.Nf6 gf6 35.Re8 Kg7 36.R8e4 Ne4 37.Qe4 Qe4 38.Re4 Be4 39.Kf2–+) 33...cd3–+ 34.Qa2 Qa2 35.Nf6 Rf6 36.Re8 Kh7 37.Ra2 Rd6 38.Re1 Rf6 39.Re8 Bd5 40.Rf2 Na4 41.Rc8 Nc5 42.Rd8 Bc4 43.Rd4 Bb5 44.Rb2 Bd7 45.g4 g6 46.fg6 Kg6 47.h3 a4 48.c4 h5 49.gh5 Kh5 50.Rd5 Kh4 51.Kh2 Bh3 52.Rd4 Bg4 53.Rg2 Rg6 54.Rg1 f5 55.Rg3 Re6 56.Rh3 Kg5 57.Rh8 Re2 58.Kg3 f4! 59.Rf4 Re3 (59...Re3 60.Kf2 Kf4 61.Rf8 Bf5 62.Rf5 Kf5 63.Ke3 a3 64.Kf3 a2 65.Kg3 d2 66.Kh3 d1Q 67.Kg3 Qg1 68.Kf3 a1Q 69.Ke2 Qad1#) 0–1. Teske,Heike (2185) – Kaltschmidt,Andreas (2210), RSX7E – A00 – Sokolsky–2, 2009.

7.c4 b6 8.Be2 Bb7 9.0–0 Nbd7 10.a4 Ne4 (10...a6 11.ba6 Ba6 12.Na3=) 11.Qb3 (11.cd5 ed5 12.Ne5 Ne5 13.fe5 c4=) 11...Qc7 (11...dc4 12.Bc4 Nd6 13.Bd3=) 12.d3 (12.Qc2 a6=) 12...dc4 13.dc4 (13.Qc4 Nd6 14.Qc2 Nf5=) 13...Rad8 (13...Rfd8 14.Nc3=) 14.Rd1 (14.Nc3 Nc3 15.Bc3 Bd6=) 14...f5 (14...Bf6 15.Nc3=) 15.Nbd2 (15.Nc3 Ndf6=) 15...Ndf6 16.Ne4 Ne4 17.Ne5 (17.Be5 Bd6+=) 17...Bh4= 18.g3 (18.Nd3 Qe7=) 18...Bf6+= 19.Qc2 Rd6 (19...Ng5 20.a5+=) 20.Rd6 Nd6 21.Rd1 (21.a5 Rd8=) 21...Rd8 22.Rd2 (22.Qb3 Be4=) 22…Nf7 (22...Be4 23.Qd1=) ½–½. Sundin,Thommy – Hultin,Per, Norrkoeping Sweden, 1988.

7.c4 b6 8.Be2 Nbd7 9.0–0 Ne4 10.Ne5 Ne5 11.fe5 f6 12.d3 Ng5 13.h4 Nf7 14.ef6 Bf6 15.Bf6 gf6 16.Bf3 Rb8 (16...Bb7 17.Nc3+=) 17.cd5+/– ed5 18.d4 c4 19.Nc3 Be6 20.Bg4 Qd7 21.Be6 Qe6 22.Qf3 Nd6 23.Nd5 Ne4 24.Nf4 Qe7+/– 25.Qg4 Kh8 26.Nd5 Qe8 27.Rac1 Rg8 28.Qf5 Qg6 29.Qg6 Rg6 30.Rf4 Nd6 31.h5 Rg5 32.Nf6 Rb5 33.e4 Rc8 34.e5 Ne8 35.Ne8 Re8 36.Rc4 Rb1 37.Kh2 Rb2 38.Rc7 Rg8 39.Kg1 Rbg2 40.Kf1 R2g7 41.Rg7 Kg7 42.Rg4 Kf7 43.e6! Kf8 44.e7! Kf7 45.Rg8 Kg8 46.e8Q 1–0. TrkM – guest7719, ICC, 2004.

7.c4 Bd7 8.a4 b6 (8...a6 9.Nc3+=) 9.Be2 (9.Bd3 a6=) 9...a6 10.Nc3 (10.0–0 Bc8=) 10...Bd6 (10...Bc8 11.d4+=) 11.0–0= dc4 (11...d4 12.Na2=) 12.Bc4 ab5 13.ab5 Ra1 14.Qa1 Qc7 (14...Bc8 15.d3+=) 15.Ne2 (15.d3 Rd8+=) 15...Be7 16.Ne5 (16.d3 Rd8+=) 16...Bc8 17.g4 (17.d3 Nd5 18.Ng4 h5+=) 17...Nbd7 (17...Ne4!?=) 18.g5 Nh5 (18...Ne8 19.Nc6 Nb8 20.Ne7 Qe7 21.Ng3+=) 19.Ng4 (19.Qd1 Bb7+=) 19...Re8 (19...Qd6 20.Qb1=) 20.Ng3 (20.Qe1!? Bf8 21.d3+=) 20...Ng3= 21.Bg7? (better is 21.hg3 Bf8 22.Bd3=) 21...Nf5–+ 22.Nh6 (22.Bh8 Bf8–+) 22...Nh6 23.gh6 (23.Bh6 Bf8–+) 23...Qd6 (23...Bh4 24.Qd1 Nf8 25.Qg4–+) 24.Rf3 (24.Qe1 Nf8 25.d3–+) 24...f6?? (better is 24...Bh4 25.Rh3 Qe7–+) 25.Rg3+= Kf7 26.Qb1 Threatening mate: Qxh7 26...Nf8 27.Bf8 Rf8 28.Qh7 Ke8 29.Qg6 Kd7 30.h7 Qd2 31.Qe4 Qd1= 32.Kg2 Qd2 33.Kh3 White threatens strongly Rg8 33...Qd6?? 34.Rg8+– f5 35.Qc6! Qc6 36.bc6 Kc6 37.Rf8 (37.Rf8 Bf8 38.h8Q+–) 1–0. Kucharkowski,Jens – Zibulla,Alfred, corr DDR–ch I245, 1983.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Ne4 11.0–0 Nd7 12.d3 Nd6 13.c4 Bf6 14.Ne5 Nf5 15.Rf3 d4 (15...Be5 16.fe5 d4 17.ed4 Nd4 18.Bd4 cd4 19.Nd2–/+) 16.Nd7 (16.ed4 Nd4 17.Bd4 cd4 18.Nd7 Bd7=) 16...Bd7–/+ 17.e4 Ne3 18.Qb3? (better is 18.Qc1–/+) 18...Qa5–+ 19.e5 Qe1 (worse is 19...Qa1 20.ef6 Ra8 21.Rf2–+) 20.Bf1 Ra8 21.Qb2 (21.Bd4 cd4 22.Qb2 Nf1 23.Rf1 Qe3 24.Qf2–+) 21...Be7 22.Na3 Qa5 (22...Qa5 23.Nc2 Nc2 24.Qc2 Qa1–+; 22...Nf1?! 23.Nc2 Qd1 24.Rf1 Qd3 25.Nd4 cd4 26.Qd4 Qd4 27.Bd4–+) 0–1. Schiffler,L – Reich, corr, 1951.

7.Be2 a6 8.ba6 b6 9.0–0 Ba6 10.Ne5 Qc7 11.Nc3 Nbd7 12.Nb5 Bb5 13.Bb5 Ne5 14.Be5 Qb7 15.f5 Nd7 16.Bd7 Qd7 17.f6 Bd6 18.fg7 (18...Rfc8 19.Qh5+=) +=. Ganesan – Chatterjee, email 4AMM–F, 1998.

7.Be2 a6 8.g4 Ng4–/+ 9.Bg7? The game is finished by a kings attack. (9.Rg1 e5 10.Ng5 Nh2 11.Be5 h6–/+) 9...Bh4 (9...Kg7 10.Rg1 f5–+) 10.Kf1–/+ Ne3! 11.de3 Kg7 12.Bd3 (12.Nh4 Qh4 13.Qe1 Qh3 14.Kf2 Kh8–/+) 12...c4 13.Rg1 Kh8 (13...Kh6 14.Ng5 f5 15.Qf3 cd3 16.Qh3=) 14.Bh7–/+ Kh7 (14...e5 15.Ng5 Bg5+–) 15.Ng5= Bg5 (15...Kh6 16.Rg4 Qf6 17.Rh4 Kg7+/–) 16.Rg5+/– Do you see the mate threat? 16...Qf6 (16...Qg5! 17.fg5 ab5+/–) 17.Qg4 Qh6 18.Rh5 ab5 19.Nd2 Threatening mate: Ke2 19...Nc6?? (19...e5 20.Rh6 Kh6 21.Qg5 Kh7 22.Qe5 Nc6 23.Qd5 Ra5 24.Qh5 Kg7 25.Qg5 Kh7+–) 20.Ke2 (20.Ke2 Rh8 21.Rg1 Nd4 22.ed4 Qh5 23.Qh5#; 20.Rh6 Kh6 21.Kf2 f6 22.Rg1 Ra2 23.Qg6#) 1–0. Grau Ribas,Jose Maria – Schmid,W, corr ICCF Cup8/9 V158, 1990.

7.Be2 b6 8.0–0 Bb7 (8...a6 9.Ne5=) 9.c4 (9.Be5 a6+=) 9...dc4 (9...a6 10.Qc2+=) 10.Bc4= Nbd7 (10...a6 11.Nc3=) 11.d3 (11.Qe2 Bd5=) 11...Qc7 (11...a6 12.ba6 Ba6 13.Nc3=) 12.Qe2 (12.Nc3 Nd5 13.Qd2 Nc3 14.Bc3 a6=) 12...a6 13.Na3 a5 14.Nc2 Bd6 (14...Rad8 15.Rac1=) 15.Rad1 (15.Rac1 Bd5=) 15...Rac8 (15...Rad8 16.Rc1=) 16.g3 (16.a4 Rcd8=) 16...e5 (16...Rcd8 17.a4=) 17.Ne5 (17.fe5 Ne5 18.Be5 Be5 19.Ne5 Qe5=) 17...Ne5 18.fe5 (18.Be5 Be5 19.fe5 Qe5=) 18...Be5 19.Be5 Qe5 20.e4 (20.Qf2 Rcd8=) 20...Rce8 21.Ne3 Qd4 (21...Bc8 22.Qf3+=) 22.Rf2 (22.Qf2 Bc8=) 22...Bc8+= 23.Re1 Re5 24.Kg2 (24.Qb2 Qb2 25.Rb2 Rd8+=) 24...h5 (24...Rd8 25.Nf5 Bf5 26.Rf5+=) 25.Rf4 (25.Ref1 Rd8=) 25...Be6 (25...Rd8 26.Nc2 Qb2 27.Rff1+=) 26.Be6 Re6 (worse is 26...fe6 27.Nc4 Rg5 28.Ref1+=) 27.Nf5 Qe5 (27...Qd7 28.a4=) 28.Ref1 (28.Qc2 Rd8=) 28...Rd8 (28...Nd5 29.Rh4 g6 30.Qf3=) 29.h3 Qc3 Attacking the backward pawn on d3 30.R1f3 Qe5 31.Qf2 Rd7 32.g4 hg4 33.hg4 g5?? 34.Nh6+– Kg7 35.Rf5 Qc3? 36.Rg5 Kf8 37.Qe3 Ke8+= 38.Rg7 Kd8 39.Qf4 Kc8+– 40.Rf7 Rf7 41.Nf7 Ne8? 42.Qf5 (42.Qf5 Qf6 43.Nd6 Kd7 44.Nc4 Qf5 45.ef5+– (45.Rf5?! Ke7+–)) 1–0. Kjaerstad,Eivind J – Ludvigsen,Jan, corr Norway, 1968.

7.Be2 Nbd7 8.0–0 a6 =.

7.Be2 Nbd7 8.0–0 b6 9.a4 a5 10.ba6 (10.Ne5 Qc7=) 10...Ba6+= 11.Ba6 Ra6 12.Nc3 c4 13.d3 cd3 14.cd3 Bd6 15.Nb5 Nc5 Attacks the isolani on a4 (better is 15...Bc5!? 16.Nfd4 Qb8=) 16.Nd6+/– Qd6 17.d4 Nce4 18.Ba3 Qc6 19.Bf8 Kf8 20.Ne5 Qb7 (20...Qc3 21.Re1+–) 21.Qb3 Nd2?? (better is 21...Nd6+–) 22.Qb4 (22.Qb4 Kg8 23.Qd2+–) 1–0. Winiger,Albert (2340) – Janka,Kurt (1775), RSS3D–45 remoteschach.de, 2006.

7.Be2 Nbd7 8.0–0 b6 9.c4 Bb7 10.Nc3 dc4 11.Bc4 Qc7 12.Qb3 Ne8 13.Ne2 (13.Qc2 Ndf6=) 13...Nd6 14.Rac1 (14.Bd3 a6=) 14...Nc4=+ 15.Qc4 (< 15.Rc4 Bd5–/+) 15...a6 16.Nc3 Nf6 17.d4 Rfc8 18.a4 Qd7 19.Ne5 cd4 20.Qd3 Qd8 21.ed4 ab5 22.ab5 Ba3 23.Rf2 Bb2 24.Rb2 Nd5 25.Rf2 Ra3 0–1. De Ridder,HP – Johansson,Ingemar, corr ICCF WC VI–VII, 1991.

7.Be2 Nbd7 8.a4 Ne4 9.0–0 Bf6 (9...a6 10.d3 Nd6 11.c4=) 10.Qc1 (10.Be5 a6=) 10...Qc7 (10...a6 11.Ne5=) 11.d3 (11.a5 Rd8=) 11...Nd6 Black intends c4 12.g4 (12.Bf6 Nf6 13.Ne5 a6=) 12...Be7 (12...a6 13.Bf6 Nf6 14.g5+=) 13.Nbd2= c4 (13...a6 14.c4=) 14.Be5 (14.Bd4 Rd8=) 14...c3+= 15.Nb1 Ne5 16.fe5 Ne8 17.Qe1 Bb4 18.Qh4 (18.d4 a6+=) 18...Ba5 (18...a6 19.g5 Qe7 20.ba6 ba6 21.d4+=) 19.g5 (19.d4 f6=) 19...f6 20.d4 fe5 21.Ne5 Rf1 22.Bf1 Nd6 23.g6 Threatening mate... how? 23...h6 24.Ra3 (24.Bd3 Bb4=) 24...Nf5 25.Qf4 Bd7 26.Bd3 Rc8 (26...Rf8 27.Nc3 Bb4 28.Rb3–/+) 27.Rb3 Qd8 (27...Rf8 28.Nc3 Bb6 29.Nd7 Qd7 30.Bf5=) 28.h4 (28.Kh1 Qc7=) 28...Bc7 (28...Qc7 29.Qf2=) 29.Bf5 (29.h5 Ba5=) 29...ef5 30.Nc3 (30.Rc3 Be6=) 30...Be6 31.Ne2 Bb8 32.c3 Qa5 33.Ra3 a6 34.ba6 Qa6 (34...ba6 35.Ra1=) 35.Qf1 (35.Qf3 Bd6 36.Ra1 Be5 37.de5 Qc4=) 35...Be5+= 36.de5 Qd3 37.Kf2 Rc4 38.Nd4= Qd2 39.Qe2 Qc1 40.Rb3 Qh1 41.h5 Qh4 42.Kg2= Qg5 43.Kf1 Ra4 44.Rb1 Qg3 45.Qb5 Qh3= 46.Ke1 Qh1 47.Kd2+= Ra2 48.Rb2 Rb2 49.Qb2 Qh2 50.Ne2 Qe5 51.Qb7 Kh8 52.Qe7 Qf6?? 53.Qf6+– gf6 54.Nf4 Bg8 55.Kd3 (55.Kd3 Kg7 56.Kd4+–) 1–0. Schiffler,L – Maulhardt, corr, 1950.

7.c4 a6+=

8.a4 Bd7 9.Qb3 (9.Nc3 ab5 10.ab5 Ra1 11.Qa1 Bc8=) 9...dc4 (9...b6 10.Nc3 ab5 11.ab5 Ra1 12.Ba1=) 10.Bc4= ab5 11.ab5 Ra1 12.Ba1 Ne4 13.d3 (13.0–0 Nd6=) 13...Nd6 (13...Qa5 14.Bc3 Nc3 15.Qc3=) 14.0–0= Be8 (14...Qe8 15.Nc3=) 15.e4 Nd7 16.Qb2 Threatening mate... how? 16...Bf6 (16...Nf6 17.e5 Nc4 18.dc4+=) 17.e5 Nc4 18.dc4 Be7 19.Nbd2 f6 20.Ne4 Bg6 21.Qe2 fe5 22.Ne5 (22.Ne5 Ne5 23.Be5 (worse is 23.fe5 Rf1 24.Kf1 Be4 25.Qe4 Qd1 26.Qe1 Qa4+=) 23...Be4 24.Qe4+=). Grigutsch,Klaus Dieter – Lohwasser,Rudi, corr DDR–ch M947, 1990.

8.a4 Nbd7 9.Nc3 +=.

8.a4 Ne4 9.d3 Nd6 10.Nbd2 (10.Be2 Nf5 11.Qc1 Bf6+=) 10...Bf6 (10...b6 11.ba6 Na6 12.Qb3+=) 11.Ne5 (11.Be5 Nf5 12.Kf2 Be5 13.fe5 f6+=) 11...Nf5 Black prepares d4 12.e4 (12.Kf2 Be5 13.Be5 Qh4 14.Kf3 d4–/+) 12...Ne3–/+ 13.Qc1 (13.Qb3 d4–/+) 13...d4 14.Nef3 g5 (14...Nd7!?–/+) 15.Ng5 Bg5 (worse is 15...Nf1 16.Nf1 b6 17.Ng3+/–) 16.fg5 Qg5 17.Nf3 Qg6 (17...Ng2? 18.Bg2 Qc1 19.Bc1 ab5 20.cb5+–) 18.Qd2 Nd7 19.g4 (19.a5 ab5 20.cb5 f5 21.ef5 ef5+=) 19...h6 (19...e5 20.h3+=) 20.Bh3 (20.Rg1 A) 20...Ng4? 21.h3 f5 22.Qe2+– (22.hg4?! fe4 23.Nh4 Qg5 24.Qg5 hg5+=); B) 20...f6=) 20...Kh7 (20...ab5 21.ab5 Ra1 22.Ba1 f6= (22...Ng4? 23.Bg4 Kh8 24.Qf4+–)) 21.Nd4 (better is 21.Rg1!?=) 21...cd4–/+ 22.Bd4 Ng4 23.Rg1 f5 24.ef5 (24.Qe2 h5–/+) 24...ef5–+ 25.Bf1 (25.Qf4 ab5 26.ab5 Ra1 27.Ba1 Nde5 28.Be5 Ne5–+) 25...Qe6 (25...Nde5 26.Be2 Qd6 27.Qc3–+) 26.Kd1 ab5 (26...Qd6 27.Qb2 Nc5 28.ba6 Ra6 29.h3–+) 27.h3 Ngf6 (better is 27...Qd6 28.Qb2 Nge5–+ (28...ba4?! 29.hg4 a3 30.Qc3–/+)) 28.Rb1? (better is 28.ab5 Ra1 29.Ba1–+) 28...bc4 (28...ba4 29.Rb5–+) 29.Rb5 Ra4 30.dc4 b6 31.Rf5 Nc5?? 32.Rc5+– bc5 33.Bd3 Ne4 34.Be4 Rf5 35.Bf5 Qf5 36.Rg7 (36.Rg7 Kh8 37.Qh6 Qh7 38.Qh7#) 1–0. Kleinke,Uwe – Wolke, Schwerin, 1978.

8.ba6 Na6 9.Qb3 +=.

8.ba6 Na6 9.Be2 +=.

8.Nc3 ab5 9.cb5 (9.Nb5 Nc6+=) 9...Nbd7 (9...Qb6 10.Qc2+=) 10.Be2 c4 (10...Nb6 11.Qc2+=) 11.0–0 Nc5 12.Nd4 (12.Ne5 Qb6+=) 12...Bd7 13.a4 (13.d3 cd3 14.Bd3 Nd3 15.Qd3 Qa5+=) 13...Qc7 (13...Qa5 14.d3 cd3 15.Bd3 Nd3 16.Qd3+=) 14.Qc2 (14.d3 cd3 15.Bd3 Nd3 16.Qd3 Rfc8+=) 14...Rfc8 15.Rfb1 Nfe4 (15...Nfe4 16.Ne4 Ne4+=; 15...Re8 16.Rc1+=). Grund,Karl Heinz – Levant,LM, corr ICCF EU–ch GT12, 1964.

7.c4 Nbd7

8.a4 Re8 9.a5 +=.

8.a4 Re8 9.Be2 dc4 10.Bc4 Nb6 11.Be2 Ne4 12.Qc2 Bf6 (12...Nf6 13.0–0=) 13.Bf6 Qf6 14.Ra2 Qg6 15.0–0 Nd7 (15...Nd5 16.Ne5 Nb4 17.Ng6 Nc2 18.Rc2 hg6+–) 16.Ne5+– Ne5 17.fe5 Ng5 18.Qg6 (18.h4!? Qc2 19.Rc2 Ne4+–) 18...hg6+/– 19.Rc2 b6 20.h4 Nh7 21.d4 cd4 22.ed4 f6 23.Rc7 Rd8 24.Bf3 Rb8 25.Rd1 Rd7 26.Rdc1 Rd4 (26...Rc7 27.Rc7 a6 28.Nc3+–) 27.Rc8 Rc8 28.Rc8 Nf8 29.Nc3 Rh4 30.Rc7 g5 31.Ra7 Ng6 32.ef6 gf6 33.a5 ba5 34.b6 (34.b6 Rb4 35.b7+–; worse is 34.Ra5 Ne5+–) 1–0. Fournier,Frederic – Dubois,Eric, match corr, 1997.

8.Qc2 a6 9.ba6 b6 10.Ne5 +=.

8.Qc2 dc4 9.Bc4= Nd5 (9...Nb6 10.Be2=) 10.a3 (10.0–0 Nb4 11.Qc3 Bf6=) 10...Bf6 (10...a6 11.ba6 b6 12.Qd3=) 11.Nc3 N7b6 12.Bd3 g6 13.Ne5 (13.0–0 c4 14.Be2 Bd7+=) 13...Be5 (13...Nc3 14.Bc3 (worse is 14.Qc3 Na4 15.Qc2 Nb2–/+) 14...Nd5 15.Bb2=) 14.fe5+= Nc3 (14...c4 15.Be4+=) 15.Bc3+/– (worse is 15.dc3 c4 16.Be4 Qg5+=; 15.Qc3?! Na4 16.Qc2 Nb2=) 15...Qh4 16.g3 Qa4 17.Rc1 Bd7 18.Qa4 Na4 19.Ba1 (19.Rb1 Nc3 20.dc3 a6 21.ba6 ba6+=) 19...Rac8 (19...a6 20.Be4 ab5 21.Bb7=) 20.0–0 (20.Kd1 Rfd8+=) 20...Rfd8 21.Be2 Be8 (21...Kf8 22.h3+=) 22.d4 cd4 (22...g5 23.h3+/–) 23.ed4 Nb6 24.Kf2 (24.Rc5 Nd5+/–) 24...Nd5 25.Bb2 b6 (25...Rc1 26.Rc1 (worse is 26.Bc1 Nc3 27.Bf3 Bb5+=) 26...Kg7 27.a4+/–) 26.Kf3 (26.h3 Rc1 27.Rc1 Kg7+/–) 26...Nc7 (26...g5 27.h3+/–) 27.a4 Nd5 28.Bd3 Nb4 29.Bb1 a5 30.Rc8 Rc8 31.Rc1 Bd7 32.Ke2 Kg7 33.Kd2 Rc1 34.Bc1 f5 35.Ba3 Nd5 36.Ba2+– g5 37.Bd5 ed5 38.Bd6 f4 39.gf4 gf4 40.Bc7 (40.Bc7 Kf7 41.Bb6+–) 1–0. Capece,Adolivio – Bini,Lorenzo, La Spezia op, 1970.

8.d3 Qa5 9.Bc3 Qc7 10.Qd2 (10.Be2 a6+=) 10...a5 (10...Bd6 11.g3+=) 11.Be2= b6 (11...dc4 12.dc4 Rd8 13.Bd3=) 12.Ne5 Bb7 13.Bf3 (13.0–0 Rfd8=) 13...Rad8 (13...dc4 14.Bb7 Qb7 15.Nc4= (worse is 15.dc4 Ne5 16.Be5 Ng4–/+)) 14.0–0 Ne5 (14...dc4 15.Bb7 Qb7 16.Nc4=) 15.Be5 (worse is 15.fe5 Ne4 16.Qc2 Nc3 17.Qc3 Bg5–/+) 15...Bd6 (15...Qd7 16.Na3=) 16.Bf6+= gf6 17.cd5 ed5 18.Nc3 d4 19.Nd5 Bd5 20.Bd5 de3 (20...c4 A) 21.ed4? Bb4 22.Qe2 Rd5–+; B) 21.Bc4?! de3 22.Qe2 Rfe8+= (worse is 22...Bf4 23.Qg4 Bg5 24.h4+/–); C) 21.e4 f5 22.Qf2= (22.ef5? Bb4 23.Qe2 Rd5–+)) 21.Qe3 f5 22.Bc4 (22.Bc6 Be7+=) 22...Be7 23.Qe5 (23.Rae1 Bf6 24.Kh1 Qd7+=) 23...Qd6 (23...Qd7 24.Rf3 Bh4 25.g3=) 24.Qf5 Bf6 25.Rae1 Bd4 26.Kh1 Qg6 27.Qh3 (27.Qh3 Rfe8 28.Re4+/–) 1–0. Tilp,Andreas – Reichstein,F, corr DDR, 1987.

8.d3 a6 9.ba6 ba6 10.Nc3 +=.

8.d3 Nb6 9.Qe2 +=.

8.d3 Ng4 9.Qd2 (9.Qe2 a6+=) 9...Bf6 (9...Nb6 10.Ne5 Ne5 11.Be5–/+) 10.Nc3 (10.Bf6 Ndf6 (worse is 10...gf6 11.h3 Nh6 12.Nc3+=) 11.h3 Nh6=) 10...Ne3 11.Qe3 d4 12.Qd2 dc3 13.Bc3 e5 14.fe5 Ne5 15.Ne5 (15.Be5 Be5) 15...Be5 (15...Re8 16.Be2 Be5 17.Be5 Re5 18.0–0 Qd4 19.Kh1–/+) 16.Be5+= Re8 17.Be2 (17.d4!? cd4 18.0–0–0 Re5 19.Qd4 Qg5 20.Qd2+=) 17...Re5–/+ 18.0–0 Qd4 19.Kh1 Be6 (19...Bf5 20.Rae1 Rae8 21.Bf3–/+) 20.Rae1 b6 (20...Re8 21.Rf4 Qe3 22.Qe3 Re3 23.Kg1+=) 21.Rf4 (21.Bf3 Rd8 22.Re5 Qe5+=) 21...Qe3 (21...Qd6 22.Ref1+=) 22.Qe3= Re3 23.Kg1 Rd8 Attacks the backward pawn on d3 (23...Re8 24.Kf2 Bc8 25.h4=) 24.Kf2 Re5 25.Bf1 (25.Rf3 a6 26.ba6 Ra8=) 25...Re1 26.Ke1 Kf8 (26...h6 27.Re4=) 27.Ke2 g5 28.Rf2 Ke7 29.Ke3 f5 30.g3 Kf6 31.a4 Ke5 32.a5 Rd4 33.ab6+= ab6 34.Ra2 f4 35.Kf3 Bf5 36.Re2 Kf6 37.Rd2 h6 38.Kf2 Ke5 39.Re2+= Kf6 40.Rd2–/+ Be6 41.Ra2+= Rd6 42.Ra8 Ke5 43.Re8 fg3 44.hg3 Kd4 45.Rf8 Rd7 46.Rb8= Rd6 47.Rf8 Bg4 48.Rf7 Bh5 49.Rh7 Rf6–/+ 50.Kg1 Bg4 51.Re7 Bf5 52.g4 Be6–+ 53.Re8 Kc3 54.Rb8 Bg4 55.Bg2 Kd3 56.Bc6 Kc4 57.Rb6 Kb4 58.Rb8 c4 59.Be4 Kc5 (59...Kc5 60.Rb7 Rb6 61.Rc7 Kb5–+) 0–1. Bungo,Gregory – Ward,Tom, Chicago op, 1997.

8.cd5 Nd5 9.Be2 a6 +=.

8.Be2 dc4 9.Na3 a6 +=.

8.a4 b6

9.Be2 a6 10.Nc3 +=.

9.Be2 Bb7 10.0–0= a6 11.ba6 Ba6 12.Na3 =.

9.Be2 Bb7 10.0–0= Rc8 11.Na3 Ne4 12.Qc2 (12.d3 Nd6=) 12...Bf6 (12...Nd6 13.Rac1=) 13.Ne5 (13.Rac1=) 13...Qc7 (13...Ne5!? 14.fe5 Bg5=) 14.d3+= Nd6 15.cd5 (15.Nd7 Qd7 16.Bf6 gf6 17.Bf3+=) 15...ed5 (better is 15...Bd5!? 16.e4 Bb7+/–) 16.Bg4+– Be5 (16...Nb8 17.Bc8 Rc8 18.Rac1+/–) 17.fe5 (17.Be5?! Rce8 18.d4 Ne5 19.fe5 Ne4+=) 17...Ne8 18.e6 Ndf6 (18...Nef6 19.Bf6 (worse is 19.ed7 Ng4 20.Rf4 Qd7+=) 19...Nf6 20.ef7 Rf7 21.Be6+/–) 19.ef7 (19.ef7 Qf7 20.Bc8 Bc8 21.e4+–) 1–0. Schiffler,L – Koehler, Aue, 1951.

9.Be2 Bb7 10.0–0= Ne4 11.d3 (11.cd5 ed5 12.d3 Nd6=) 11...Nd6 12.Ne5 (12.cd5!? ed5 13.Ne5=) 12...Nf5–/+ Black plans d4 13.Qc1 (13.Nd7!? Qd7 14.Bc1–/+) 13...Ne5 14.Be5 d4 15.e4 Ne3 16.f5? (better is 16.Rf3–/+) 16...ef5–+ 17.Rf2 (17.ef5 Bg2 18.Rf2 Bg5–+) 17...fe4 18.de4 Be4 (18...Re8 19.Bg3–+) 19.Nd2… (29 moves) 0–1. Kucharkowski,Jens – Zimmermann, Freital, 1986.

9.Be2 dc4 10.Bc4 a6.

7.Be2 Bd7

8.0–0 Qb6 9.a4 a6 10.Na3 (10.a5 Qd8 11.b6 Nc6=) 10...ab5 (10...c4 11.a5 Qd8 12.b6=) 11.ab5 Ne4 12.c4 Bf6 13.Ne5 d4 (better is 13...Nd6!?+=) 14.Qc2+/– (14.Nd7?! Nd7 15.Qc2 de3 16.de3 Bb2 17.Qb2 Ndf6=) 14...Nd6 15.ed4 (15.ed4 Nf5 16.Bd3+– (worse is 16.Nd7 Nd7 17.Qe4 Bd4 18.Bd4 Nd4+=)) 1–0. Rellstab – Hallier, Hamburg, 1965.

8.0–0 a6

9.ba6 Na6 10.Ne5 Nb4 11.a3 Nc6 12.Nd7 (12.c4 Qc7=) 12...Qd7 13.d3 (13.Bb5 Rfd8=+) 13...Ra5 14.Nd2 Rfa8 15.c4 d4 16.e4+= e5 17.Qe1 Bd6 18.f5+= b5 19.Qg3 b4 20.ab4 Nb4 21.Rab1 Nc2 22.Nb3 Ra2 23.Bc1 Na3 24.Rb2 Rb2 25.Bb2 Qb7 26.Bd1 Nb1 27.Bc1 Ne8 28.h4 Nc3 29.Nd2 Na2 30.Bb3 Nc1 31.Rc1 Qb4 32.Qf2 Ra3 33.Bc2 Qb2 34.Qe1 Ra2 35.Nb3 Nf6 36.Qd1 h5–+ 37.Nd2? Ng4 38.Nf1 Bc7 39.Qd2 Ba5 40.Qd1 Bb4 41.g3 Ba3 (42.Rb1 Qc2 43.Qc2 Rc2 44.Rb8 Kh7–+) 0–1. Wall,Bill – Peinador,Dan, IECG, 2004.

8.0–0 c4

9.a4 a6 10.Nc3 ab5 11.ab5 Ra5 12.Ra5 Qa5 13.Qa1 Qa1 (13...Qb4 14.Rb1+=) 14.Ra1+/– Bc5 15.Ba3 Ba3 16.Ra3 Rc8 (16...h6 17.Ra7 Bc8 18.d3+/–) 17.Ra7+– (17…b6 18.Rb7+–) 1–0. Trokenheim,Marek – guest605, ICC, 2004.

8.c4 a6

9.a4 dc4 10.Bc4 Ne4 11.Qc2 =.

9.a4 Qc7 10.0–0= dc4 (10...ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4=) 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 Be8 (13...Ne4 14.Be5 Nd6 15.Nc3=) 14.Be5 (14.Qc2 Nbd7+=) 14...Qc8 (14...Qd8 15.d4+=) 15.Qc2 Nbd7 16.Ng5 (16.Nc3 Qd8+=) 16...h6 (16...Ne5?? 17.fe5 Ne4 18.Ne4+– (18.Qe4?! Bg5 19.Nc3 Qd7+=)) 17.Bf6 (17.Ne4 Ne5 18.fe5 Ng4=) 17...Nf6= 18.Nf3 Nd5 (18...Qc7 19.Nc3=) 19.Nc3 Nb6 20.Be2 c4 (20...Bd7 21.Ne5+=) 21.Rb1 (21.Na4 Nd5 22.Qc4 Bd7+/–) 21...Nd5 (21...Bc5 22.Ne5+=) 22.Ne4 (22.Ne5 Bc5+/–) 22...f5+= 23.Nc3 (23.Nf2 c3+=) 23...Nb4 (23...Bh5 24.Ne5 Be2 25.Ne2=) 24.Qa4 Qc5 Attacking the isolated pawn on b5 (24...Nd3!?+=) 25.Ne5+/– g5 (25...Nd3 26.Qc4 Ne5 27.Qc5 (27.fe5?! Qe5 28.Bf3 b6+=) 27...Bc5 28.fe5+/–) 26.Nc4+– gf4 (26...Nd5!? 27.Nd5 ed5+–) 27.d4 Qc7 ½–½. Devis,Wim – Van der Stricht,Karel, Kieldrecht, 1995.

9.Nc3 dc4 10.Qa4 Nd5 11.Qc4 ab5 12.Nb5 Ra5 +=.

6.Nf3 Nbd7

7.a4 b6 8.Be2 Bb7 9.0–0 0–0 10.Na3 c4 (10...a6 11.ba6 Ba6 12.Nb5+=) 11.d3 Nc5 12.Nb1 (12.Bd4 a6=) 12...cd3 13.cd3 Ng4 (13...a6 14.Ne5=) 14.Bd4 Bf6 (14...Rc8 15.Ne5 Nh6 16.Bg4=) 15.Ne5 Ne5 16.fe5 (worse is 16.Be5 Be5 17.fe5 Qg5–/+) 16...Be7 17.Nd2 (17.Qc2 Rc8=) 17...Qc7 (17...a6 18.ba6 Ra6 19.Bb2+=) 18.Qc2 Rac8 19.Rac1 Qb8 (19...Qd7 20.Qd1=) 20.Qa2 Nd7 21.Nf3 (21.Qb2 Rc1 22.Rc1 Rc8=) 21...Rfd8 (21...Rc1 22.Rc1 Rc8 23.Ra1=) 22.Bb2 (22.Rc8 Rc8 23.a5 Qc7+=) 22...Nc5 (22...Rc1 23.Rc1 (worse is 23.Bc1 Ne5 24.Nd4 Qd6–/+) 23...Rc8 24.d4=) 23.Ba3 (23.d4 Ne4=) 23...Bf8 (23...d4 A) worse is 24.Nd4 Qe5 25.Nc2 Na4–+; B) 24.ed4?! Bd5 25.Rc4 Nd3 (worse is 25...Bc4 26.dc4 Qc7 27.dc5+–) 26.Rc8 Qc8= (26...Ba2?? 27.Rb8 Rb8 28.Be7+–; worse is 26...Rc8 27.Qd2 Ba3 28.Bd3=); C) 24.e4=) 24.Bb2 (24.d4 Ne4 25.Bf8 Rf8+=) 24...g6 (24...Be7 25.a5+=) 25.g4 (25.Bd4 a6+/–) 25...h6 (25...Rd7 26.Bd4+=) 26.h4 (26.Bd4 Nd7+=) 26...f5 (26...a6 27.Bd4=) 27.gf5 (27.g5 a6=) 27...gf5 28.Kf2 (28.Kh2 Kh7=) 28...Bg7 (28...a6 29.Ke1=) 29.Rg1 (29.Ke1 Rc7+=) 29...Kh7 (29...a6 30.Rg6 Kh7 31.Rcg1+=) 30.Rg2 (30.Ke1 a5+=) 30...Rg8= 31.Rcg1 Bh8 (31...a6 32.Ke1 ab5 33.ab5+=) 32.h5 (32.a5 Rg2 33.Rg2 Ba8+=) 32...Rg2= 33.Rg2 Rg8 34.Rg8 Qg8 (34...Kg8 35.Bd4 Qf8=) 35.Nh4 (better is 35.Bd4!?+=) 35...Qg5+= 36.Ng6 (36.Nf3 Qg4 37.Bd4 Bg7+=) 36...Bg7 (36...d4 37.ed4 f4–+) 37.a5?? (37.Qa3 Qd8 38.Bd4+=) 37...d4!–+ Do you see the mate threat? 38.Bd4?? (38.ed4 Qg2) 38...Qg2 (better is 38...Nd3 39.Bd3 Qg2 40.Ke1 Qa2 41.ab6 ab6 42.Bb6 Bf3–+) 39.Ke1 Nd3! 40.Kd1?? Be4 41.Qa1 Nc5 42.Qc3–/+ Bf3 43.Qe1 Nd3 44.Qf1?? Qf1 (44...Qf1 45.Kc2 Qc1 46.Kb3 Bd5 47.Ka4 Qc2 48.Ka3 Qb3#) 0–1. Schiffler,L – Kuhn, Halle, 1950.

7.c4 0–0+= 8.a4 (8.Be2 dc4 9.Na3 a6+=) 8...a5 (8...a6 9.Nc3+=) 9.Be2 Ne4 (9...Nb6 10.cd5 ed5 11.Qc2=) 10.0–0 Bf6 11.Ne5 (11.Qc2 Bb2 12.Qb2 b6=) 11...Qc7 12.d3 Nd6 13.Nd7 (13.Qc1 dc4 14.dc4 Nf5=) 13...Bb2+= 14.Ra2 (14.Nf8? Ba1 15.Nd2 Bc3 (15...Kf8?! 16.Qa1 Nf5 17.e4=) 16.Nh7 Kh7–+) 14...Qd7 15.Rb2 Nf5 16.Qc1 (16.Qd2+=) 16...dc4 (16...d4!? 17.e4 Ne3+=) 17.dc4= b6 18.g4 (18.Rd1 Qe7=) 18...Nh4 19.Rd2 (19.Qd1 Qb7 20.Bd3 f5=) 19...Qe7 (19...Qb7 20.Rf2=) 20.Nc3 (20.Qd1 Rb8=) 20...Bb7+= 21.e4 f5 (better is 21...Ng6=) 22.Rd3 (better is 22.gf5 ef5 23.e5=) 22...fe4–/+ (worse is 22...Be4 23.Ne4 fe4 24.Re3+=) 23.Rh3 (23.Rdd1 Nf3 24.Bf3 ef3–+) 23...Nf3–+ 24.Kg2 (24.Bf3 ef3 25.Qc2 h6 26.Rhf3 Bf3 27.Rf3 Qh4–+) 24...Nd2! 25.Nd5? (25.Qd2 Decoy to d2 25...e3 A double attack) 25...Bd5 (25...e3 26.Re3 Nf1 27.Kf1–+) 26.cd5 Nf1 27.de6 Ne3 (27...Qd6 28.Kf1 Rf4 29.Ke1–+) 28.Re3 (28.Qe3 Qe6 29.Rh5 Rae8–+) 28...Rf4 29.Qc4 Raf8 30.Re4 Rf2 31.Kg1 Kh8 32.Qc3 Qh4 33.Qg3 Qf6 34.Qe5 Rf1! 35.Kg2 Qh4 (35...Qh4 36.Bf1 Qf2 37.Kh3 Rf3 (37...Qf1?! 38.Kh4=) 38.Qg3 Qf1 39.Kh4 Rg3 40.Kg3 g5–+) 0–1. Kruk,J – Frey,Ludwik, corr Poland 7879, 1979.

7.c4 0–0 8.Be2 b6 9.Qb3 Bb7 10.0–0 a6 (10...h6 11.Nc3=) 11.a4 (11.ba6 Ba6 12.Nc3 Ne4=) 11...Ne4 (11...ab5 12.Qb5 dc4 13.Bc4+= (worse is 13.Qc4 Ba6 14.Qa6 Ra6 15.Ba6 Ne4–/+)) 12.d3 (12.Nc3 Ndf6=) 12...dc4= 13.dc4 Bf6 (13...ab5 14.ab5 Ra1 15.Ba1=) 14.Nbd2 (14.Nc3 ab5 15.ab5 Bc3 16.Bc3 Nc3 17.Qc3 Qc7=) 14...Bb2 15.Qb2 Ndf6 (15...Qf6 16.Qf6 Ndf6 17.Ne4 Be4 18.Rfd1=) 16.Rfd1+= Qc7 17.Ne5 (17.Ne4 Ne4 18.Ne5 Nd6=) 17...ab5 18.Ne4 (18.Qb5? Nc3 19.Qb2 Nd1 20.Bd1 Ne4–+; 18.ab5?! Ra1 19.Ra1 Rd8 20.Ne4 Ne4=) 18...Ne4 (18...Be4 19.ab5 Ra1 20.Ra1=) 19.ab5 (better is 19.Rd7!? Qc8 20.ab5 (20.cb5?! Bd5=) 20...Ra1 21.Qa1+/–) 19...Ra1= 20.Ra1 (20.Qa1 Ra8 21.Qb2 Nd6=) 20...f6 21.Nf3 g5 (21...Nd6!?=) 22.fg5+= Ng5 (22...fg5 23.Qe5 Qf7 24.h3+/– (24.Ng5? Qf2 25.Kh1 Qe2 26.Qe6 Kh8 27.Qe5 Nf6–+)) 23.Ng5 fg5 24.Rf1 (24.Ra7 Qb8 25.Qa1 e5+/–) 24...Rf1= 25.Bf1 Qg7 (25...e5 26.Qc2=) 26.Qd2 Qc7 27.Bd3 (27.Qc3 e5=) 27...Qe5 28.Be2 Qc7 ½–½. Kuhlmann,AEJ – Jannink, 1982.

7.Be2 0–0

8.0–0 a6 9.Nc3 =.

8.0–0 Qb6 9.a4 c4 (9...a5 10.Qe1=) 10.Bd4 Bc5 11.Nc3 (11.d3 cd3 12.cd3 a6=) 11...Bd4 (11...Qa5 12.Qe1=) 12.Nd4 Re8 (12...Qa5 13.Qe1+=) 13.Qe1 (13.a5 Qd6+=) 13...Nc5 14.a5 Qd6 15.Nf3 (15.Bf3 Bd7+=) 15...Bd7 16.Ne5 Rac8 17.Qh4 Nce4 18.Ne4 Ne4 19.d3 Nd2 20.Rfd1 c3 21.d4 f6 22.Bd3 (22.Nd7 Qd7 23.Bd3 f5=) 22...f5 (22...h6 23.Nd7 Qd7 24.a6=) 23.Kh1 (23.Be2 Red8+/–) 23...Rc7 (23...Ne4 24.a6 b6 25.Kg1+=) 24.g4 (24.Qh5 Rf8+=) 24...Nc4 (24...Rf8 25.a6=) 25.Rg1 (better is 25.Rdb1=) 25...Qe7? (better is 25...Bb5!? 26.gf5 ef5 27.Bf5 h6= (27...Ne3?? 28.Qh7 Kf8 29.Qh8 Ke7 30.Rg7 Kd8 31.Qh4 Rce7 32.Nf7 Kc7 33.Nd6 Rg7 34.Qf6 Nf5 35.Nb5 Kb8 36.Qf5+–)) 26.Qe7+/– Re7 27.Bc4 dc4 28.Rgb1 Rc8 29.Ra3 Be8 30.g5 a6 31.ba6 ba6 32.Rb6 Bb5 33.Rc3 Kf8 34.Kg1 Ree8 35.Kf2 Rb8 36.Ke1 Ke7 37.Nc6 Bc6 38.Rc6 Rb1 39.Ke2 Kf7 40.R3c4 (40.R3c4 h6 41.Ra6 hg5 42.Rc7 Kg6 43.d5+–; worse is 40.R6c4 Ra1 41.Rc5 h6 42.gh6 gh6+–) 1–0. Brauer,Christian E – Schmidt,Manfred, corr DDR–ch M586, 1976.

8.0–0 b6

9.c4 Bb7 10.d3 dc4 11.dc4 Qc7 12.Nc3 =.

9.c4 Bb7 10.d3 Ng4 11.Qd2 Bf6 12.Bf6 Qf6 13.Na3 (13.d4 dc4 14.Bc4 Rac8+=) 13...Rfd8 (13...d4 14.ed4 Bf3 15.Bf3 Qd4 16.Kh1+/–) 14.Rae1 (14.Ng5 Nh6=) 14...Nh6 (14...a6 15.Ng5 Nh6 16.Bf3=) 15.h3 (15.Ng5 dc4 16.dc4 a6+=) 15...Nf5 (15...a6 16.d4+=) 16.Kh2 (16.cd5 Bd5 17.e4 Ng3 18.ed5 Nf1 19.Rf1 ed5=) 16...Nd6 (16...a6 17.g4 Nd6 18.g5–/+) 17.Bd1 (17.Rd1 a6+=) 17...dc4 18.Nc4 (18.dc4 Ne4 19.Qc2 a6–/+) 18...Nb5 19.Nfe5 Ne5 20.fe5 Qg5 (20...Qg6 21.Qf2–+) 21.a4 (21.Bf3 Rab8–/+) 21...Nc3–+ 22.Bg4 (22.Bh5 Rd3 23.Bf7 Kh8–+) 22...Na4 23.Rf4 h5 (23...Bd5 24.Nd6 f6 25.ef6 Rd6 26.f7 Kf8 27.Ra4–+) 24.h4 (24.Bf3 Bf3 25.gf3 a5–+) 24...Qh4 25.Bh3 Qe7 26.Ref1 Rf8 (26...Bc6!? 27.Qf2 Be8 28.Nd6 Rd6 29.ed6 Qd6 30.Qf3–+) 27.Nd6 Bc6 28.Rf7 Rf7 29.Rf7 Qg5 30.Rf4 (30.d4 cd4 31.Qd4 Nc5–+) 30...Qe5 31.Nf7 (31.Nc4 Qd5–+) 31...Qd5 32.e4 Qd7 33.Ng5 Re8 34.e5 c4 35.d4 (35.Qe2 g6 36.dc4+=) 35...Nc5–+ 36.Qe2 Nd3 37.Rf1 g6 38.Rf6 The pressure on the isolated pawn grows 38...Kg7 (38...Kh8 39.Rg6 Nf4 40.Rh6 Kg8 41.Qc4=) 39.Qf1 (39.Ne6 Re6 40.Re6 Qd4 41.Rc6 Qf4 42.g3 Qe5 43.Qe5 Ne5 44.Rc7 Kh6 45.Ra7 b5+/–) 39...Qd8 40.Be6 Be4 41.Bc4 Qd4= 42.Rf7? Kh6–+ 43.Qf6?? Qe5 44.Qe5 Ne5 (44...Ne5 45.Rf4 Kg5 46.Re4 Ng4 47.Rg4 Kg4–+; 44...Re5?! 45.Ne4 Nb2 46.Nd6=) 0–1. Maciejewski,Roman – Baranowski,Tadeusz, corr Poland, 1996.

9.c4 Bb7 10.Ne5 Rc8 11.Qa4 dc4 12.Qa7 Rc7 13.Qa4 Ne5 14.Be5 Rd7 15.Qc4 Qa8 16.Bf3 Bf3 17.Rf3 Rfd8 18.f5 ef5 19.Rf5 Qe4 20.Qe4 Ne4 21.Rf4 Nd2 22.Nd2 Rd2 23.Bc7 Rd1 24.Rf1 Ra1 25.Ra1 Rd7 26.Bb6 Rb7 27.Ba5 Rb5 28.Bc3 Rb6 29.Kf2 f6 30.a4 Bd6 31.a5 Ra6 32.h3 Kf7 33.Ke2 Ke6 34.Kd3 Kd5 35.e4 Kc6 36.Kc4 Bc7 37.Rb1 Bf4 38.Rb5 Be3 39.Rb8 Bf4 40.Re8 Ra7 41.Re6 Kd7 42.Kd5 Be3 43.Rc6 Bd4 44.Bd2 h5 45.a6 g5 46.Be1 Rc7 47.Rc7 Kc7 48.Ba5 1–0. Larrasz – Wallner, corr 1992.

9.d3 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Bb7 13.h3 Qc7 14.Nbd2 Ra8 15.Ne5 Ne8 16.c4 Nd6 17.Nd7 Qd7 18.g4 Ra2 19.Bc3 Qc8 20.Bf3 dc4 21.dc4 Qa8 22.Bb7 Qb7 23.Qb1 Qa8 24.Qd3 Ne8 25.e4 Qd8 26.Qe3 Qa8 27.e5 Qd8 28.Ra1 Ra1 29.Ba1 Qd7 30.Bc3 f6 31.Nf3 fe5 32.Ne5 Qd1 33.Kg2 Bf6 34.g5 Be5 35.fe5 Qc2 36.Kg3 Qf5 37.Qd2 Kf8 38.h4 Ke7 39.Qe3 g6 40.Qd2 Qe4 41.Qg2 Qc4 42.Ba1 Qd5 43.Qf2 Qd3 44.Kg4 Qb5 45.Qf3 Qa4 46.Kh3 Qa1 47.Qb7 Kf8 48.Qh7 Qf1 49.Kg3 Qf7 0–1. Petersohn – Goergens, 1993.

9.Ne5 a6 =.

5.Bf6 Qf6

6.Nc3 Bd6

7.e4 =+.

7.Nf3 Nd7 8.Be2 Ne5 9.e4 d4 10.Na4 Nf3 11.Bf3 0–0 –/+.

7.Qh5 Be5 8.Nge2 0–0 9.f4 Bd6 10.Rb1 Rd8 =+.

Play 1.b4 at Chessworld.net!

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Chessworld.net on behalf of Marek have set up a continuous stream of 1.b4 tournaments.

These tournaments should always be available to join. As soon as four players are paired, another one will automatically be set up.

    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
  • 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
  • 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
  • 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)

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The home of Email Chess on the web!

The home of Email Chess on the web!