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1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 f6 5.e3 Be6

(...)

6.b5 Nd7 7.Be2 0–0–0 8.0–0 g5 9.a4 h5 10.a5 h4 11.Ba3 Nc5?? (better is 11...c5 12.bc6 Qc6 13.Bf8 Rf8+=) 12.d4+– e4 (12...Qd7 13.dc5 g4 14.Nfd2+–) 13.Bc5 (better is 13.dc5 Qd7 14.c6 Qf7+–) 13...Qd7 14.Nfd2 Kb8 15.b6 (better is 15.Bf8 Rf8 16.h3 Nh6+–) 15...a6 (15...Bc5 16.dc5 cb6 17.ab6 ab6+–) 16.bc7 Qc7 17.Bb6 Qd7 18.Bd8 Qd8 19.c4 f5 20.cd5 Bd5 21.Nc3 Bc6 (21...Nf6 22.Nd5 Qd5 23.Qa4+–) 22.Na4 (better is 22.d5 Bd7+–) 22...Bb4 23.Nc5 g4 (23...h3 24.Na6! ba6 25.Qb3 hg2 26.Qb4 Ka8 27.Rfc1+–) 24.Nc4 (better is 24.Na6!? ba6 25.Qb3 Qe7+–) 24...g3 25.f4 (better is 25.Ne5!? gh2 26.Kh1 Ne7+–) 25...gh2 26.Kh1 (better is 26.Kh2!? Ne7 27.Rb1 Bc5 28.dc5 Qd1 29.Rfd1 Nd5+–) 26...h3 27.Rf2 (27.gh3 Nf6 28.Ne5 Bc5 29.Nc6 bc6 30.Qb3 Ka8+–) 27...hg2 28.Rg2 Bb5 (28...Nf6 29.Ne5 Bc5 30.Nc6 bc6 31.dc5 Qd1 32.Rd1+–) 29.Ne5 Be2 (29...Bc5 30.Nf7 Qe8 31.Nh8+–) 30.Qe2 Nf6 (30...Bc5 31.dc5 Ne7 32.Rb1+–) 31.Qb2 (better is 31.Na6 Ka8 32.Nb4 Qc7+–) 31...Bc5 (31...Nd5 32.Na6! ba6 33.Nc6 Ka8 34.Nd8 Rd8 35.Qe2 Kb8 36.Qa6 Rf8 37.Qb5 Kc8 38.Rg7 Ne7 39.Rc1 Kd8 40.Qb6 Kd7 41.Rc7 Ke8 42.Qb8 Nc8 43.Qc8) 32.dc5 (32.Nc6 Kc8 33.Nd8 Rd8 34.dc5 Ng4 35.Rb1 Rd7 36.c6 b5 37.ab6 a5 38.b7 Kb8 39.Qh8 Kc7 40.b8Q Kc6 41.Qb6 Kd5 42.Qhd4) 32...Qc7 33.c6 Nd5 (33...Ka8 34.Ng6 bc6 35.Qf6 Rd8+–) 34.cb7 (34.Nd7 Qd7 35.cd7 Rf8 36.Qe5 Ka8 37.Qd5 Ka7 38.d8N Rd8 39.Qd8 b5 40.Rg7) 34...Rd8 35.Rc1 Qb7 (35...Nc3 36.Rc3 Rd1 37.Kh2 Qh7 38.Kg3 Qh8 39.Nc6 Kc7 40.b8Q Qb8 41.Qb8 Kd7 42.Qd8 Ke6 43.Qe7 Kd5 44.Qe5) 36.Nc6 Ka8 37.Qb7 Kb7 38.Nd8 Ka7 (38...Kb8 39.Rb2 Nb4 40.Rb4 Ka8 41.Rc8 Ka7 42.Nc6) 39.Nc6 (39.Rg7 Ne7 40.Re7 Kb8 41.Kh2 Ka8 42.Rc8) 39...Kb7 40.Nd4 (40.Rg7 Nc7 41.Nd4 Ka8 42.Rcc7 Kb8 43.Nf5 Ka8 44.Rg8) 40...Ne3 (40...Nb6 41.Rg7 Kb8 42.ab6 a5 43.Rcc7 a4 44.Rg8) 41.Nf5! Ng2 (41...Nf5 42.Rb1 Double attack) 42.Kg2 e3 43.Re1 1–0. ventil (1665) – alf5656 (1765), kurnik, 2013.

6.Qc1 Ne7 7.c4 c6 8.Nc3 Nd7 9.d4 ed4 10.Nd4 Ne5 11.cd5 Bd5 12.e4 Bc4 13.Nce2?? (better is 13.Bc4 Nc4 14.Ncb5 cb5 15.Nb5+/–) 13…Nd3–+ (13...Nd3 14.Kd1 Nc1 15.Rc1 Bd3–+) 0–1. Erich,Juergen – Baczinski,Wolfgang, Schleswig Holstein–ch cand–B, 1996.

6.Nc3 Nc6 +=.

6.c4 Nc6 7.cd5 Bd5 8.Nc3 0–0–0 (8...e4 9.Nd5 Qd5 10.Nd4 Nd4 11.ed4+=) 9.Rc1 Nge7 10.Nd5 Nd5 11.Bc4 Nb6 12.Bb3 h5 13.b5 Ne7 (13...Na5!? 14.Ba2 Qd3+=) 14.a4 Nbd5 15.a5 Kb8 16.b6?? (better is 16.0–0+/–) 16...cb6 17.ab6 Qb6 18.Ba3 (better is 18.0–0=) 18...Nf5?? (better is 18...Nc6 19.Bf8 Rhf8–/+) 19.Bf8+/– Rhf8 20.Bd5 Rd5 21.0–0?? (better is 21.e4 Rc5 22.Rc5 Qc5 23.ef5+/–) 21...Nd6 (21...e4!? 22.Rb1 Qc6 23.Nd4 Nd4 24.ed4–+) 22.Rb1 Qd8 23.d4 Ne4 (23...Re8 24.Qb3 Rb5 25.Qa3+=) 24.Qb3 (24.Qc2!? Ng5 25.Ng5 fg5 26.Rb7 Kb7 27.Rb1 Qb6 28.Rb6 Kb6 29.de5 Re5 30.Qg6 Rf6 31.Qg7+/–) 24...b6 25.de5 fe5 26.h3? (better is 26.Rbd1!? Rd1 27.Rd1=) 26...Rf3!–/+ 27.gf3 Qg5?? (better is 27...Nd2 28.Qa4 Nf1 29.Rf1 a5–/+) 28.Kh2+– Nd2?? (better is 28...Nf6+–) 29.Qd5 Nf1 30.Rf1 (30.Rf1 Qe7 31.Rc1+–) 1–0. elektrooon – posejdon2, kurnik, 2014.

6.c4 e4? 7.c5 (better is 7.Nd4+–) 7...Qe7 8.Nd4 Bd7 (8...Nc6!? 9.Bb5 Bd7+/–) 9.d3 c6 10.de4 de4 11.Bc4 Nh6 12.Qb3 Na6 13.Nd2 0–0–0? (13...Nc7 14.0–0+–) 14.0–0 (better is 14.Ba6!? ba6 15.Qa4 Kb7+–) 14...Nc7 15.a4 g5? (15...Nf5 16.b5 Nd4 17.Bd4+–) 16.Rfd1 (16.b5 Qc5 17.Ne4 Qb4 18.bc6 bc6+–) 16...Ng4 (16...Nf5 17.Qc2 Nd5 18.Ne4 Nb4 19.Qb1+–) 17.Ne2 (17.b5 Ne5+–) 17...h5 18.Ng3 h4 19.Nge4 Rh7 (19...h3 20.Nd6 Kb8+–) 20.Nd6 Kb8 21.f3 (21.h3 Ne5 22.Be5 fe5 23.b5+–) 21...Qe3+/– 22.Qe3 Ne3 23.Re1 (better is 23.Bf6 Be7 24.Be7 Re7 25.Re1+–) 23...Nc2?? (better is 23...Ncd5+=) 24.b5 (better is 24.Bd3 Ne1 25.Bh7 Nf3 26.Nf3+–) 24...Na1 25.Ba1 cb5 26.ab5 Bd6 27.cd6 Nb5 (better is 27...Ne8!?–/+) 28.Bf6= Rc8 29.Re7 Re7 30.de7 Nd6?? (better is 30...Rc5 31.Be6 Kc7=) 31.Be5+– Kc7? (better is 31...Rc6 32.Bd5 Kc7+–) 32.Ne4 Kb6 (32...b5 33.Bf7 (33.Nd6?! bc4 34.Nc8 Kc8=) 33...Kb6 34.Bd6+–) 33.Nd6 g4 (33...Rc5 34.Bd4 Kc6 35.Bc5 Kc5+–) 34.Nc8 Kc5 35.Bf7 gf3 36.gf3 b5 37.e8Q (37.Na7!? b4+–) 37...Be8 38.Be8 a5 39.f4 b4 40.f5 b3 41.f6 Kb4 42.f7 a4 (42...b2 43.f8Q Kb3 44.Qf7 Kc2 45.Qc4 Kb1 46.Bg6 Ka1 47.Qa4) 43.f8Q 1–0. an27 (1700) – alf5656 (1685), kurnik, 2013.

6.d3 c5 7.d4 cd4 8.ed4 e4 9.Nfd2 Ne7 10.c4 Ng6 11.cd5 Bd5 12.Bb5 Nc6 13.0–0 a6 14.Bc6 Bc6 15.Qe2 Nf4 16.Qe3 f5 17.g3 (17.Nc4 Qh6=) 17...Ne6 (better is 17...Nd3!? 18.Bc3 Qg6–/+) 18.Nc4 Qc7 19.Rd1 Bd5 20.Ne5 Be7 21.Nc3 Rd8 22.Qf4?? (better is 22.Nd5 Rd5 23.f3+=) 22...Nf4–+ 23.gf4 0–0 24.Rd2 Bb3 25.b5 ab5 26.Nb5 Qa5 27.Nc3 Bf6 28.Rad1 (28.Re1 Rfe8–+) 28...Bd1 29.Rd1 Qb6 30.d5 (30.Ba1–+) 30...Qb2 31.Na4 Qb3 32.Rd4 Qa3 33.Kg2 Be5 34.fe5 Rc8 35.d6 Qf3 0–1. lefou (1915) – ctrotter (2470), net–chess.com, 2011.

6.d3 e4 7.de4+/– de4 8.Nd4 1–0. lefou (1915) – vbj (2065), net–chess.com, 2011.

6.d3 Be7 7.Be2 Nh6 8.0–0 e4 9.de4 de4 10.Qd6 Bd6 11.Nd4 Bd7 12.Nd2 f5 13.b5 0–0 14.Nc4 Nf7 15.a4 Be7 16.a5 Bf6 17.b6 ab6 18.ab6 Ra1 19.Ra1 cb6 20.Nb6 Bd4 21.Bd4 (21.ed4 Rd8+–) 21...Bc6 22.Bc4 Nd7 23.Bd5 (23.Nd7!? Bd7 24.Ra7+/–) 23...Bd5 24.Nd5 Nd8 (24...Nd6 25.Bc3 Rd8 26.Bb4=) 25.f3 (25.Ne7!? Kh8 26.Rb1+/–) 25...ef3 26.gf3 Nc6 27.Nb6 (better is 27.Rb1 Rb8 28.Kg2+=) 27...Nd4–/+ 28.ed4? (better is 28.Nd7 Nc2 29.Nf8 Na1 30.Ne6–/+) 28...Nb6–+ 29.Ra7 Rf7 30.c4 (30.Kf2 Rc7–+) 30...Nc4 31.Rb7 (31.Ra8 Rf8 32.Ra7–+) 31...Rb7 0–1. lefou (1915) – douglasricardo (2245), net–chess.com, 2011.

6.d3 Ngf6 7.Be2 =+.

6.d4 Ne7 7.de5+– fe5 8.Be5 Qd7 9.Nbd2 Nbc6 10.Bb2 0–0–0 11.Nb3 Rg8? (better is 11...Ng6+/–) 12.Nc5+– Qd6 13.Ne6 Qe6 14.b5 Na5 15.Be2 h6 16.Nd4 Qf7 17.Bg4 Kb8 0–1. luminarydebris (1620) – douglasricardo (2245), net–chess.com, 2011.

6.Be2 a5 7.c4 (better is 7.b5!?=) 7...dc4–/+ (< 7...ab4 8.c5 Qd8 9.ab4 Ra1 10.Ba1=) 8.b5 Nd7 9.Qc2 (9.d4 cd3 10.Qd3 Qd3 11.Bd3 Nc5–/+) 9...Nc5 10.0–0 (10.Bc4? Bc4 11.Qc4 e4–+) 10...Nd3 11.a4 (11.Ne1 Nb2 12.Qb2 Ne7–/+) 11...Qd7 12.Na3 (12.Ba3 Ne7–/+) 12...Rd8 13.Rfb1 Ba3 (13...Qd5 14.Bc3 b6 15.Ne1–/+) ½–½. Yalcin,Umit – Flazinski,Pawel, corr or01–018 E–mail, 2002.

6.Be2 d4 7.ed4 e4 8.Ng1 Nc6 9.c4 Nd4 10.Bd4 Qd4 11.Nc3 Bd6 12.Nb5 Qe5 13.Nd6 Qd6 14.d3 ed3 15.Qd3 Qe5 16.Rd1 Ne7 17.Nf3 Qd6 18.Qd6 cd6 19.Rd6 Kf7 20.Nd4 Rhd8 21.Rd8 (worse is 21.Ne6 Rd6 22.Nc5 b6+=) 21...Rd8 22.Ne6 (22.Ne6 Ke6 23.Bf3+/–) 1–0. douglasricardo (2245) – vbj (2065), net–chess.com, 2011.

6.Be2 Qd8 7.0–0 Bd6 8.c4 c6 9.d4 e4 10.Nfd2 f5 11.c5 Bc7 12.Nc3 Qh4 13.g3 (13.g3 Qh6 14.f4=). pawnofdoom – hal1958, playchess.de, 2003.

6.Be2 e4 7.Nd4 a6 8.Ne6 (8.Ne6 Qe6 9.d3+=). workchess (2215) – vbj (2065), net–chess.com, 2011.

6.Be2 g6 7.d3 Bg7 8.Nbd2 Ne7 9.0–0 0–0 10.c4 c6 11.Rc1 Nd7 12.Nb3 f5 (12...Rac8!?=) 13.Ng5+/– Bf7 14.Nf7 Rf7 15.cd5 (15.h4 Nf6+=) 15...cd5 (15...Nd5 16.Nd2=) 16.e4 (16.d4 a6+/–) 16...Nf6 (16...Rff8 17.Qd2+=) 17.ed5 (17.f4!? Qb6 18.Nc5 ef4 19.e5+/–) 17...Ned5= 18.Na5 Nf4 19.Nc4 (19.g3 Ne2 20.Qe2 Re7=) 19...Qd5 Black prepares the advance e4 20.Ne3 Ne2 (20...Qe6 21.g3 Ne2 22.Qe2=) 21.Qe2+= Qe6 22.Nc4 e5 seems the pivot of the position 22...e4 23.de4 Qe4 24.Qe4 (24.Qd1 Qd5=) 24...Ne4 25.Bg7 Kg7 26.f3 Nf6 27.Rfd1 Rc8 28.Ne5 Rfc7 29.Rc7 Rc7 30.Kf2 Rc2 31.Kf1 Nh5 (31...Ra2 32.Rd3=) 32.Rd4 (32.Rd7 Kf6 33.Nd3 Ng7+=) 32...b5 (better is 32...Kf6 33.Nd7 Ke7=) 33.h4?? (better is 33.g4 fg4 34.fg4+/–) 33...Ng3–+ 34.Ke1 Re2 (34...Re2 35.Kd1 Re5 36.Rd7 Kh6 37.Ra7 Nf1–+) 0–1. Kocela,J – Ciesielski,Janusz (2085), Poland–chT region, 1999.

6.Be2 Nh6 7.d3 c5 (7...Be7 8.0–0=) 8.Nbd2 (8.bc5 Qc5 9.Nbd2 Qc7=) 8...Nd7 (8...cb4!? 9.ab4 Qb4–/+) 9.b5 (9.bc5 Qc5 10.d4 Qb6=) 9...Be7 10.e4 (10.c4 0–0=) 10...0–0 11.ed5 Bd5 (11...Qd5 12.Ne4 Nb6 13.0–0=+) 12.Ne4 (12.Nc4 Qc7=) 12...Qc7 13.Qd2 (13.0–0 a6=) 13...Rfd8 (13...a6 14.Nc3 Be6 15.a4=+) 14.h3 (14.0–0 c4=+) 14...Nf8 (14...c4 15.Nc3 Be6 16.0–0=+) 15.Nc3 Be6 16.g4 (16.0–0 Nf5=+) 16...c4 (16...Nf7 17.Qe3–/+) 17.Ne4 (17.g5 cd3 18.cd3 fg5=) 17...Nf7 (17...Ng6 18.Qc3 Nf4 19.g5 Ne2 20.Ke2=+) 18.Qe3 (18.Qc3 Bd5=+) 18...Ng6 (18...Qa5 19.Nc3 cd3 20.Bd3 Rac8–/+) 19.Nfd2 (19.Rg1!?–/+) 19...Nf4–+ 20.0–0 Nd5 (21.Be5 Ne5–+ (21...Ne3 22.Bc7 Nf1 23.Bd8 Rd8 24.Kf1=; < 21...fe5 22.Qg3–+; < 21...Qe5 22.Qf3–+)) 0–1. Myyra,Markku – Koskinen,Veikko (2020), FIN–chT1, 2001.

6.h3 Nd7 7.Be2 c5 (7...Nh6!?=) 8.bc5 Nc5 9.Nh4?? (9.Nc3 Ne4+=) 9...Rd8 (better is 9...Qb6!? 10.Bc3 Bd6–/+) 10.Bb5 Nd7 11.Qh5 (11.Nc3 a6 12.Be2 Nh6=) 11...Bf7 12.Qg4 Qe6 (12...Nh6 13.Qa4+=) 13.Qe6 Be6 14.0–0 Bc5 15.f4 e4 16.f5 Bf7 17.Nc3 Ne7 18.Na4 Bd6 19.Bd4 (19.Kf2 a6 20.Bd7 Rd7–/+) 19...b6 (19...Bg3 20.Nc5 Nc6 21.Nb7 Nd4 22.ed4–+) 20.Nc3 (20.g4 0–0+=) 20...0–0 (20...Bg3 21.Rf4–/+) 21.Bd7 Rd7 22.a4? (22.Kf2!?–/+) 22...Nc6 (22...Bg3 23.Rf4 Bh5 24.Nb5–+) 23.Nb5? (23.Ne2!?–+) 23...Nd4 (better is 23...Bg3!? 24.Rf4 Bf4 25.ef4–+) 24.Nd4 Be5?? (24...Bg3 25.Rf4–+) 25.c3? (25.Kf2 Rc8 26.c3 Rc5+=) 25...Bd4?? (better is 25...Bg3 26.Rf4 Bh5–+) 26.cd4 Rc8 27.Ra2 Rdc7 28.Rd1 Rc2 29.Rc2 Rc2 30.g4 h6 (30...Ra2!?–+) 31.Ng2+= Ra2 (31...Kf8 32.Nf4+=) 32.Nf4 (better is 32.Rc1=) 32...Ra4–/+ 33.Ne2 Rc4 34.Nc3 a5 35.Nb5 a4?? (35...Rb4 36.Nc3–+) 36.Kf1? (36.Rb1 Rc2 37.Nc3 Rd2 38.Na4+=) 36...Rb4–+ 37.Nd6 a3 (better is 37...Kf8!? 38.Rc1 a3 39.Rc7–+) 38.Ra1 Rb3 39.Ke1 Kf8 40.Kd1 Ke7 (better is 40...Be8!? 41.Ne8 Ke8–+) 41.Nf7–/+ Kf7 42.Kc2 Rb2 (better is 42...Rd3!? 43.Rb1 a2–/+) 43.Kc1 Rb3 44.Kc2 Rd3 45.Rb1 a2 46.Ra1 Ra3 47.Kb2 Ra5 48.Ra2 (48.Ra2 Ra2 49.Ka2–/+) 1–0. brasseur – olobo, kurnik, 2014.

6.Nh4 Nd7 7.Nf3 =+.

6.Nh4 Ne7 7.Bb5 c6 8.Ba4 (8.Be2 Nd7+=) 8...Nd7–/+ 9.d3 Nb6 10.Bb3 0–0–0 11.0–0 Ng6 12.Nf3 Bg4 13.Nbd2 Qe7 Black prepares e4 14.h3 Be6 15.d4 (15.Qe2 Qd7=) 15...e4+= 16.Nh2 h5 17.c4 dc4 18.Ba4 (18.Ba2!?=) 18...Bd5 19.Rc1 Kb8 20.b5 f5 (better is 20...c5–/+) 21.Bc3?? (21.bc6!? bc6 22.Rc3+=) 21...Qg5?? (better is 21...Qa3 22.Ba5 Qa4 (22...Na4?! 23.Ra1 Nc3 24.Qe1–+) 23.Qa4 Na4 24.Bd8 Bb4 25.Nc4 Rd8 26.bc6 Nc3 27.Rc3 Bc3–+) 22.bc6–/+ bc6 23.Ba5 (23.Rb1 f4 24.f3 fe3 25.Ne4 Qf4+=) 23...Nh4 (23...f4!? 24.Bb6 ab6–+) 24.g3+= Bd6 (24...Ba3 25.Rb1 c3 26.Bc3+=) 25.Kh1 Rdf8?? Black intends f4 (better is 25...Ng6+=) 26.Bb6+/– (26.gh4?! Qh4 27.Bb4 Bb4 28.ab4 Qh3=) 26...ab6 27.Nc4 (27.gh4 Qh4 28.Nc4 Bc4 29.Rc4 Qh3+/–) 27...f4? (better is 27...Bc7 28.Ne5 Be5 29.gh4 Qh4 30.de5 Rd8+–) 28.gh4 (28.Nd6?! fg3 29.fg3 Qg3+=) 28...Qh4 29.Nd6 fe3 (29...Rf6 30.Nc4 b5+–) 30.Bc6 ½–½. befuddle – tessin (1740), ICC tourney, 2003.

6.Bb5 c6

7.Be2 Nd7 8.0–0 Be7 9.d3 g5 (9...0–0–0 10.Nbd2=) 10.c4 g4 (10...dc4 11.dc4 Qd1 12.Rd1= (< 12.Bd1 Bc4 13.Re1 0–0–0–/+)) 11.Nfd2+= h5 12.d4 e4 (12...0–0–0 13.cd5 Bd5 14.Nc3+=) 13.Nc3 f5 (13...0–0–0 14.cd5 cd5 15.Rc1+/–) 14.cd5+/– cd5 15.Nb5 Qb8? (better is 15...Qb6+/–) 16.Rc1+– Bd6?? (16...Kd8 17.Nc7 Qc7 18.Rc7 Kc7+–) 17.Rc8!! (17...Qc8 18.Nd6 Kd8 19.Nc8 Rc8 20.Qa4+–) 1–0. COMP Fidelity Mach 3 – De Jong,Peter, USA m2, 1989.

7.Be2 Nd7 8.d4 0–0–0 9.0–0 e4 10.Nfd2 Qb8 =.

7.Be2 Ne7 8.0–0 Ng6 9.d3 Be7 10.Nbd2 0–0 11.c4 dc4 12.dc4 Nd7 13.c5 Qc7 14.Nc4 Rfd8 15.Qc2 b5 16.Ncd2 a5 17.Ne4 a4 18.Rad1 (better is 18.Nc3!?=) 18...Bb3–/+ 19.Qc1 Bd1 20.Rd1 Kh8 21.h4 f5 22.Nd6 Bd6 23.cd6 Qb6 24.h5 Ngf8 25.Ne5 (25.Ne5 Ne5 26.Be5+–) 1–0. ctrotter (2470) – douglasricardo (2245), net–chess.com, 2011.

7.Bf1 Nd7 8.Be2 Nh6 9.0–0 Be7 10.d4 0–0 =+.

6.Bb5 Nc6

7.0–0 a6 8.Be2 Be7 9.d4 e4 10.Nfd2 f5=.

7.d4 e4 8.Nfd2 a6 9.Be2 f5 10.c4 dc4=.

6.Bb5 Nd7

7.0–0 0–0–0 8.Qe2 a6 9.Ba6? (better is 9.Ba4=+) 9...Qa6–+ 10.Qa6 ba6 11.d3 Nb6 12.Nbd2 (12.Nc3 Bg4–+) 12...Bd6 13.Nb3 Na4 14.Bc1 e4 (14...Ne7 15.Re1–+) 15.de4 de4 16.Nfd4 Bb3 (better is 16...Bc4!? 17.Re1–+) 17.cb3 Nb6 18.Rd1 (18.Ne6 Rd7–+) 18...Ne7 19.Bb2 Rd7 20.Rac1 (20.Ne6 Nf5–+) 20...Be5 21.a4 (21.h3 Rhd8–+) 21...Rhd8 22.Ne6 (22.Ba1–+) 22...Rd1 23.Rd1 Rd1 (23...Bb2?! 24.Rd8 Kb7 25.Nc5 Ka7 26.Ne4=) 0–1. aliwood – Grimshaw, internet, 2005.

7.0–0 a5 8.ba5 Ra5 9.a4 Ne7 10.Ba3 Qb6 =.

7.0–0 c6 8.Be2 Be7 9.c4 dc4 10.d3 cd3 11.Bd3 Nh6 12.Nc3 1–0. lefou (1915) – luminarydebris (1620), net–chess.com, 2011.

7.0–0 c6 8.Be2 Be7 9.d3 f5 10.c4 Ngf6 11.c5 Qc7 12.Ng5 Bg8 13.f4 ef4 14.Rf4 g6 15.Rf1 h6 16.Nf3 Rh7 17.Nbd2 1–0. ctrotter (2470) – luminarydebris (1620), net–chess.com, 2011.

7.d4 e4 8.Nfd2 0–0–0 9.c4 c6 10.Ba4 f5 =.

6.Nc3 Nd7

7.Rb1 0–0–0 8.Be2 g5 9.0–0 g4 10.Nb5 Qb6 =.

7.Be2 0–0–0 8.d4 e4 9.Nd2 Kb8 10.Na4 f5 =.

6.Nc3 Be7

7.Bb5 Nd7 8.0–0 a5 9.Ba4 Nh6 10.Bb3 c6 =+.

7.d3 Nc6 8.Nb5 Qd7 9.c3? (better is 9.c4+=) 9...a6–+ 10.d4 ab5 11.Bb5 Bd6 12.0–0 Nge7 13.Ba4 (13.de5 Be5 14.Ne5 fe5–+) 13...0–0 14.Bc2 e4 15.Nd2 Nf5 16.f3?? (16.c4 Rfe8 17.Qb1–+) 16...Ne3 17.Qc1 Nf1 18.Qf1 ef3 19.Nf3 Ne7 20.h3 Bf5 21.Bf5 Nf5 22.Qd3 Rae8 23.Rf1 Re3 24.Qd2 Rfe8 0–1. vbj (2065) – workchess (2215), net–chess.com, 2011.

7.Be2 a5 8.ba5 Ra5 9.0–0 =.

7.Be2 a5 8.b5 Nh6 9.a4 Qb6 10.0–0 Nd7 =.

7.Be2 Nh6 8.0–0 a5 =.

7.Be2 Nh6 8.d3 0–0 9.0–0 e4?? (better is 9...a5+=) 10.de4+– c6 11.Nd4 Ng4?? (better is 11...de4 12.Ne4 Qd7+–) 12.Ne6 (12.Bg4 Bd7+–) 12...Qe6 (12...Qh2) 13.ed5 Qe5 14.Bg4 f5 15.Bf3 Nd7 (15...Bd6 16.g3+–) 16.Na4 (better is 16.dc6!? Nf6 17.cb7 Rad8+–) 16...Qc7 17.c4 (17.dc6 bc6 18.Qd4 Nf6 19.Qc4 Kh8 20.Qc6 Rac8 21.Qc7 Rc7+–) 17...Ne5 (17...Bd6 18.h3+–) 18.Be2 (18.Be5 Qe5 19.dc6 bc6 20.Bc6 Rad8+–) 18...cd5 19.Qd5 Kh8 (19...Nf7+–) 20.Be5 Qc8 21.f4 (better is 21.Bf3 Bf6 22.Bf6 Rf6+–) 21...a6 (21...Bf6 22.Nc5 Be5 23.fe5+–) 22.Nb6 Qc6 23.Na8 Ra8 24.Qf7 Bf6 25.Bf3 Qc4 26.Qc4 Be5 27.fe5 h6 28.Bb7 1–0. ctrotter (2470) – lefou (1915), net–chess.com, 2011.

7.Be2 Nh6 8.h3 0–0=+ 9.0–0 c6 10.Re1 Nd7 11.Bf1 (11.b5 cb5 12.Nb5 Qc6=+) 11...f5 (11...b5 12.a4 a5 13.ab5 ab4 14.Na4–/+) 12.d3 (12.Be2 b5=+) 12...Rf7 (12...b5 13.Qd2=+) 13.Qe2 (13.Na4 b6=+) 13...Raf8 (13...b5 14.Qd2=+) 14.Rad1 e4 (better is 14...Rd8=+) 15.de4+/– fe4 16.Ne4 Qc7 (16...de4 17.Rd6) 17.Neg5 Bg5 18.Ng5 Re7 (18...Rf2 19.Qd3 Bf5 20.Qd4 Rf1 21.Rf1+–) 19.c4 Nb6 20.Ne6 Re6 21.cd5 Nd5 22.Qc2 Rg6?? (better is 22...Qf7+–) 23.Rd5! (23...Rf2 24.Kf2 Qf7 25.Kg1 cd5 26.Qc8 Qf8 27.Qb7+–) 1–0. Frysiak,Adam – Baluch,Wieslaw, corr 2. AMM Poland, 1993.

6.Nc3 Ne7

7.Bb5 Nd7 8.0–0 0–0–0 9.Be2 Kb8 10.d4 e4 11.Nd2 Qc6=.

7.Nb5 Qd7 8.Be2 a5 9.Nc3 Nf5 10.b5 e4=+.

7.Be2 Nd7 8.d4 e4 9.Nd2 Nf5 10.0–0 a6=.

6.c4 dc4!?

7.Qc2 a5 8.b5 +=.

7.Qc2 Qc6 +=.

7.Qc2 Nd7 8.Bc4= Bc4 9.Qc4 Nb6 10.Qc2 g6 (10...c5!?=) 11.d4+/– Bg7 12.de5 fe5 13.0–0 0–0–0 14.Nbd2 Qd3 15.Rac1 Qc2 16.Rc2 Re8 17.Ne4 Kb8 18.Nc5 Nh6 19.a4 Nf7 20.Rfc1 (20.a5 Nd5 21.b5 Nb4+/–) 20...Re7 21.b5 Rd8 22.Nd2 (22.Ba3 e4 23.Nb7 Kb7 24.Be7 Rd7+/–) 22...Nd7 23.Ndb3 Nc5 24.Nc5 Bf8 25.h3 Nd6 26.Rd2 Rde8 27.Nd3 (27.Be5 Re5 28.Nd7 Kc8 29.Nf8 Ne4+/–) 27...Bg7+= 28.Ba3 Ne4 29.Be7 Nd2 30.Bb4 Ne4 ½–½. Miralles,Gilles – Lalic,Bogdan (2260), FRA–chJ, 1982.

6.c4 c6

7.cd5 cd5 8.Nc3 a6 9.Rc1 Nc6 10.Be2 Be7 11.Na4 Nh6 12.Nc5 Rb8 13.Ne6 Qe6 14.Qc2 0–0 15.Ba6?? (15.e4 Kh8+=) 15...ba6 (better is 15...Nb4 16.ab4 ba6–/+ (16...Qa6?! 17.Qb3+=)) 16.Qc6= Qc6 17.Rc6 Rfc8 (17...a5!?=) 18.Ra6+= Rc2 19.Bc3?? (19.Kd1 Rb2 20.Kc1+=) 19...Rc1–+ 20.Ke2 Rh1 21.Ra7 Kf8 22.h4 Nf5 23.g3 Rc1 24.Ne1 d4 25.ed4 ed4 26.Bb2 Rb1 27.Nd3 Rc8 28.Kf3 (28.Rb7 Bd6–+) 28...Rc2 29.Ke4 (29.Ra8 Kf7 30.Ke4 Rd2 31.Kf5 Rd3 32.Ke4–+) 29...Nd6 (29...Rbb2 30.Nb2 Nd6 31.Kd5 Rb2 32.Ke6 Rd2 33.Ra8 Ne8 34.Kd7–+; 29...Rcb2 30.Nb2 Nd6 31.Kd5 Rb2 32.Ke6 Rd2 33.Ra8 Ne8 34.Kd7–+) 30.Kd4 (30.Kd5 Rd2 (30...Rbb2?! 31.Nb2 Kf7 32.Na4–+) 31.Ke6 Rd3 32.Ra8 Ne8–+) 30...Nb5 31.Ke3 Na7 0–1. vihavald – alf5656, playok.com, 2012.

7.cd5 cd5 8.d4 e4 9.Nfd2 Nc6 10.Nc3 a6 11.b5 ab5 12.Nb5 Qd7 13.a4 Bb4 14.Bc3 Bc3 15.Nc3 Nge7 16.Bb5 0–0 17.0–0 f5 18.g3 f4 19.ef4 Bh3 20.Re1 Qf5 21.Nf1 g5 22.Ne3 Qg6? (22...Qf7 23.Ne4 (worse is 23.fg5 Qf2 24.Kh1 Nd4+=) 23...de4 24.Bc4+/–) 23.Ncd5 (better is 23.Ned5!? Nd5 24.Nd5+–) 23...gf4+/– 24.Bc6 Nc6 25.Ng2 fg3 26.fg3 Rad8? (better is 26...Bg2 27.Kg2 Rad8+=) 27.Ndf4+– Qf5 28.d5 (28.Nh4 Qd7 29.Re4 Rf7 30.Nh3 Qh3+–) 28...Ne5? (28...Bg2 29.Kg2 Nb4 30.Qb3+/–) 29.Rf1 (better is 29.Nh4 Nf3 30.Nf3 ef3 31.Qf3+–) 29...Nf3+/– 30.Rf3 (30.Kh1!?+/–) 30...ef3= 31.Qf3 Bg2 32.Kg2 Qc2 33.Qf2 (better is 33.Kh1+/–) 33...Qf2+= 34.Kf2 Rd5 35.Rb1 Rd2 36.Kf3 Rf7 37.h4 Rd4 38.a5 Ra4 39.Rb5 Kf8 40.Kg2 Ke8 41.Re5 Kd8 42.Ne6 Kc8 43.Rb5 Re7 44.Nc5 Ra2 (44...Re5 45.Nb7 Rb5 46.Nd6 Kd7 47.Nb5 Ra5 48.Nd4–/+) 45.Kh3 (45.Kf3 Ra3 46.Nb3 h5+=) 45...Rc7 (45...Re5!? 46.Nb7 Rb5 47.Nd6 Kd7 48.Nb5 Ra5–/+) 46.Ne4 Kb8 47.h5 Ka7 48.Rf5 Ra4 49.Nd6 (better is 49.Re5!?+=) 49...Rc6 50.Ne8 Ka6 51.Nf6 h6 (better is 51...Ra5 52.Kg4 Rf5 53.Kf5 Rc5 54.Ke4 b5–+) 52.Nd7= Ra5? (52...Ka7 53.Nb6 Ra3–/+) 53.Ra5?? (better is 53.Nb8 Kb6 54.Ra5+–) 53...Ka5–+ 54.g4 1–0. tyop (1790) – alf5656, playok.com, 2012.

6.d3 Nh6

7.Nc3 Be7 8.Be2 0–0 9.0–0 a5 10.b5 Nd7=+.

7.Nbd2 c6 8.c4 Nd7 9.Be2 Be7 10.0–0 0–0 11.Qc2 Rac8 12.Rac1 Qb8 13.Qb1 Nf7 14.cd5 cd5 (worse is 14...Bd5 15.d4+=) 15.Rc8 Rc8 16.Rc1 Nb6 17.Bd1 Nd8 18.Bb3 Bf7 19.Kf1 Bd6 20.Ng1 Rc7 (20...Rc1 21.Qc1 Nc6 22.Ngf3=) 21.Ne2 Qc8 22.Rc7 Qc7 23.Nc3 Qd7 24.Qa2 d5 draws heavy fire 24...Bf8 25.Ke2 (25.Nf3 Nc6=) 25...a6 (25...d4 26.ed4 ed4 27.Bf7 Nf7 28.Nce4=) 26.h3 Be6 27.Ba1 Kh8 28.Bb2 (28.Kf1 Nc6=) 28...Be7 29.Ba1 (29.Kf1 f5=) 29...f5 (29...Kg8 30.Kf1=) 30.Nf3 (30.Kf1 Bf6+=) 30...Bf6+= 31.Nb1 Nc6 32.Nbd2 Bf7 (32...e4 33.Ne1 Ba1 34.Qa1+=) 33.Kf1= Bh5 34.Qc2 Qd8 35.Qc5 Be7 36.Qc1 Bd6 37.Bb2 Qe7 38.e4 fe4 39.de4 d4 40.Ne1 Bc7 (40...Bf7 41.Bf7 Qf7 42.Nef3+=) 41.Nd3= Bg6 42.Nc5 Nd8 43.a4 (43.Kg1!?+=) 43...Bd6= 44.Ba3 h6 45.Nd3 (45.Kg1 Bf7=) 45...Kh7 (45...a5 46.Bb2 Nc6 47.b5+=) 46.f3 (46.a5 Nd7=) 46...a5+= 47.Nc4 (47.Qb1 Nd7+=) 47...Nc4–/+ 48.Bc4 ab4 49.Bb2 Nc6 50.Bd5 Be8 51.Qc4 Na5 52.Qc8 Qd7 (52...Nc6 53.Qa8–/+) 53.Qa8 (53.Qd7!? Bd7 54.f4 ef4 55.e5+=) 53...Qa4 54.Ke1 (54.Qd8 Qd1 55.Ne1 Bb5 56.Kg1 Qe1 57.Kh2 Bc4 58.Qg8 Kg6 59.Qe6 Kh7 60.Qg8 Kg6 61.Qe6 Kh7 62.Qg8=) 54...Qb5 (54...b3 55.Qc8 Qd7 56.Qd7 Bd7 57.f4 ef4 58.e5–/+) 55.Kd2 Be7 (55...b3 56.Qc8 Bb4 57.Nb4 Qb4 58.Ke2–/+) 56.g3?? (56.Qc8!?=) 56...Bd6 (better is 56...b3!? 57.Qc8 Bb4 58.Ke2 Qd3 59.Kd3 Bb5 60.Bc4 A) 60...Nc4?! 61.Qf5 Kg8 62.Qe6 Kf8 63.Qc8 Kf7 64.Qb7 Kg8 65.Qc8 (65.Qb5?? Nb2 66.Ke2 d3 67.Ke3 d2 68.Qd5 Kh7–+) 65...Bf8 66.Qe6 Kh8 67.Qc4 Bc4 68.Kc4=; B) 60...Bc4 61.Qc4 Nc4 62.Kc4 Be1–+) 57.f4 ef4 (57...b3 58.Qc8 Bb4 59.Nb4 Qb4 60.Ke2+=) 58.gf4 b6 (58...Qa4 59.Ke1 Be7 60.Bd4 Bh4 61.Kf1 Qd1 62.Kg2 Qd3 63.Qe8 Qg3 (63...Qd4?? 64.Bg8 Kh8 65.Bf7 Kh7 66.Qg8) 64.Kh1 Qf3 65.Kg1 Qd1 66.Kg2 Qd2 67.Kh1 Qd1 68.Kg2 Qe2 69.Kg1 Qe1 70.Kg2 Qg3 71.Kh1 Qh3 72.Kg1 Qg4 73.Kh1 Qf3 74.Kg1 Qg3 (74...Qf4?? 75.Bg8 Kh8 76.Bf7 Kh7 77.Qg8) 75.Kh1 Qf3 76.Kg1 Qg3 (76...Qf4 77.Bg8 Kh8 78.Bf7 Kh7 79.Qg8) 77.Kh1 Qf3=) 59.Bd4 b3 60.Qa7 Attacks the backward pawn on g7. Attacks the isolani on b6 (60.Qc8 b2 61.Bb2 Qd7 62.Qd7 Bd7+/–) 60...Bf8 (better is 60...Bd7 61.f5 Bf4 62.Nf4 b2+=) 61.Qb6?? (better is 61.Qb8+=) 61...Nc4–/+ 62.Bc4 Qc4 63.Nb2?? (better is 63.Bc3 Qe4 64.Qb3 Qg2 65.Ke3 Qh3 66.Kd2 Qg2 67.Ke3–/+) 63...Bb4–+ 64.Ke3 Qc1 65.Kd3 (65.Kf2 Qf4 66.Kg1 Qg3 67.Kf1 Qe1 68.Kg2–+) 65...Bb5!! (65...Bb5 66.Qb5 Qf1 67.Ke3 Qb5–+) 0–1. Minaya Molano,Juan M (2275) – Kovacevic,Slobodan (2365), I Open Calvia, 2004.

7.Be2 Be7 8.0–0 a5 9.b5 0–0 10.c4 dc4=.

7.Be2 Nf7 8.Nbd2 Be7 9.0–0 c6 10.h3 0–0 11.c4 Nd7 12.cd5 cd5 13.Rc1 Rfc8 14.Rc8 Rc8 15.Qb1 Bf5 16.Rc1 Nb6 17.Rc8 Nc8 18.Qc1 Nb6 19.Qc2 Qc6 20.Qc6 bc6 21.g4 Be6 22.Kg2 Na4 23.Bc1 Nc3 24.Bf1 c5 25.bc5 Bc5 26.Nb3 Bb6 27.Na1 Nd6 28.Nc2 Ndb5 29.Nb4 Na4 (29...d4 30.Nc2–/+) 30.Nd2 (better is 30.d4 Nd4 31.ed4+/–) 30...Nbc3 31.Nb3 Kf7 (31...d4 32.Na1–/+) 32.Na1 (32.d4 e4=) 32...Ke7 33.Nac2 Kd6 34.Ne1 a5 35.Nbc2 Na2 36.Bd2 N4c3 37.Bc3 Nc3 38.Nf3 h6 39.Nd2 d4 (39...Bd7 40.d4–/+) 40.e4 (40.Nc4 Bc4 41.dc4–/+) 40...Ba2 41.f3 (41.Kf3 Nb1 42.Ke2 Bc5–/+) 41...Bc5 42.Kf2 Nb1 43.Ke2 Nd2 44.Kd2 Bb3 45.Na1 Ba2 46.a4?? (46.Nc2 Bb1 47.h4–/+) 46...Bb4–+ 47.Kc2 Kc5 (better is 47...Be6!?–+) 48.Nb3–/+ Bb3 49.Kb3 Bc3 50.Be2 Bb4 51.Bd1 (51.Bf1 Be1–/+) 51...Bc3 52.Bc2 (52.Be2 Be1–/+) 52...Bb4 53.Bb1 (53.Bd1 Be1+=) 53...Bc3 54.Bc2 Bb4 55.h4 (55.Bd1 Be1–/+) 55...Bc3 56.h5 Bb4 57.Bb1 Bc3 58.Bc2 Bb4 59.Bb1 Bc3 60.Ba2 Bb4 61.Bb1 ½–½. Fournier,Frederic – Guest3362078, Partie amicale, 5m + 0s, 2008.

6.d4 ed4

7.Nd4+= Nc6 8.Bb5 Bd7 9.0–0 0–0–0 10.Qe2 (10.Nd2 Ne5+=) 10...Kb8 (10...Ne5 11.Nc3+=) 11.Bc6 (11.Nd2 Nge7+=) 11...Bc6 12.b5 (12.Rc1 Bd7=) 12...Be8 (12...Bd7 13.Rc1=) 13.Nd2 (13.c4 Bf7=) 13...Ne7 (13...Qb6 14.a4 Bd6 15.a5+/–) 14.c4+= Bf7 15.c5 (15.Rac1 Bg6 16.c5+/–) 15...Qd7?? (better is 15...Qc5 16.Rac1 Qd6=+) 16.Rfc1 (16.c6 Qc8 17.cb7 Qb7 18.Rac1+/–) 16...b6 (16...Bg6 17.c6 bc6 18.a4+/–) 17.N2b3 (better is 17.cb6 cb6 18.a4+–) 17...Nc8? (better is 17...h5+/–) 18.Nc6+– Ka8 19.Nd8 Qd8 20.Bd4 (20.Rc3 Qe7+–) 20...Be7 (20...Qe8 21.cb6 cb6 22.a4+–) 21.a4 Re8 (21...bc5 22.Nc5 Re8 23.Na6+–) 22.cb6 cb6 (22...Nb6 23.Bb6 cb6 24.a5+–) 23.a5 Bd6 (23...Bb4 24.Qg4 Bf8 25.ab6+–) 24.ab6 Nb6 25.Bb6 (better is 25.Ra6 Bc7+–) 25...Qb6 26.Ra6 Qb7 (26...Qd8+–) 27.Rd6 Rb8 (27...Rc8 28.Rc8 Qc8 29.b6+–) 28.Na5 (28...Qb5 29.Qd2+–) 1–0. Velker,Wim – Hasler,Ulrich, corr ICCF TT–4–90 SF, 1994.

7.Nd4+= Bf7 8.Bd3 Nh6 9.Nd2 c6 (9...Qb6 10.Rb1+=) 10.c4 Nd7 11.cd5 Ne5 12.Be2 Bd5 13.0–0 Qd7 14.e4 Bf7 15.Re1 Bd6 16.Nf1 (16.N2b3 Rd8+=) 16...Rd8= 17.Ne3 Bc7 (17...0–0 18.Qa4+=) 18.Qc2 (18.Qa4 Bb8+/–) 18...0–0+= 19.Rad1 Qc8 20.Ndf5 Nf5 21.Nf5 Qe6 22.Nd4 Qc8 23.Nf5 Qe6 24.Rd8 (24.Bd4 Qb3 25.Qc1 Rfe8+=) 24...Rd8= 25.Rd1 (25.Nd4 Qe8=) 25...Rd1 26.Bd1 (26.Qd1 Ng6 27.Qb1 Ne7 28.Ne7 Qe7=) 26...Nc4 27.Bc1 Qe5 28.g3 Qa1 29.a4 (29.Kg2 Na3 30.Qd2 Be6+/–) 29...Be6 30.Kg2 Ne5 (30...Kh8 31.Be2 Nd6 32.Nd6 Bd6 33.b5=) 31.Bb2 Qa2 32.Nd4 (32.Bd4 Qc2 33.Bc2 Bf5 34.ef5 Bd6=) 32...Bf7 (better is 32...Bc4=) 33.Qc1?? (better is 33.Bc3=) 33...Nd3–+ 34.Qc3 (34.Qd2 Nb2 (34...Qb2?! 35.Qd3 Qb4 36.Bb3–/+) 35.Bc2 g6–+) 34...Nb2 (34...Qb2?! 35.Qd3 Qb4 36.Nf5–/+) 35.Qc5 White plans b5 (35.Bb3 Na4 36.Qd3 Bb3 37.Nb3–+) 35...Nd1 36.b5 (36.Qc2 Qc2 37.Nc2–+) 36...Qf2 37.Kh3 Bb6 (37...Ne3 38.Nf3 Qg2 39.Kh4 Bg3 40.hg3 Qh1 41.Nh2 Qh2) 38.Qe7 Qd4 (38...Qf1 39.Kh4 g5 40.Kg4 Ne3) 39.bc6 (39.Qf8 Kf8 40.a5 Qe4 41.g4 Qd3 42.Kh4 Bf2) 39...bc6 (39...Qg1 40.Qe8 Be8 41.Kg4 Ne3 42.Kh3 Qf1 43.Kh4 g5) 40.Qb7 (40.Qd8 Qd8 41.a5 Be6 42.Kg2 Qd2 43.Kh1 Bh3 44.ab6 Qe1) 40...Qe4 0–1. Emberger,Rene (2115) – Gutmann,Alois (2020), Graz op–A, 2004.

6.d4 Be7

7.de5+/– Qc6 8.Nc3 fe5?? (better is 8...Qd7+/–) 9.Bb5+– Qb5 (9...Nd7 10.Bc6 bc6 11.b5+–) 10.Nb5 Bd8 (10...Na6 11.Be5 Nf6 12.Bc7+–) 11.Be5 Na6 (11...Nf6 12.Bc7 Nc6 13.Bd8 Kd8 14.Ng5+–) 12.Bg7 Nh6 (12...Bf6 13.Ng5! Bg7 14.Ne6 Ba1 15.Qa1+–) 13.Bh8 Bg4 14.Qd5 c6 15.Qe4 Be7 16.Bf6 0–0–0 17.Be7 (better is 17.Qe7 Nf7+–) 17...Rd7 18.Qf4 (better is 18.Na7 Kb8 19.Ne5 Ka7 20.Nd7 Bd7 21.Qd4 Ka8 22.Qd7+–) 18...Re7 19.Na7 (19.Qf8 Kd7 20.0–0–0 Ke6 21.Rd6) 19...Kd7+– 20.Rd1 Ke8 (20...Ke8 21.Qh6 Nb4 22.ab4 Be6+–). luminarydebris (1620) – lefou (1915), net–chess.com, 2011.

7.de5+/– Qd7. vbj (2065) – lefou (1915), net–chess.com, 2011.

6.Be2 Ne7

7.0–0 Nd7 8.d4 Ng6 9.Nbd2 e4 10.Ne1 a5 =.

7.0–0 Ng6 8.Nc3 c5 9.bc5 Qc5 10.d4 Qb6 11.Rb1 (11.de5 Ne5 12.Nd5 Qd6+–) 11...Bd6? (better is 11...e4 12.Nd2 Nc6=) 12.de5 Ne5 13.Ne5 Be5 14.Nd5 Bd5 15.Qd5 Nd7 16.Be5 Qc6 17.Qc6 bc6 18.Bd6 Nb6 19.Rfd1 Kf7 20.Bc5 Nd5 21.Bc4 Kg6 22.Bd5 cd5 23.Rd5 Rhc8 24.c3 a5 25.Bd4 Rab8 26.Rb8 Rb8 27.g3 a4 28.Ra5 Rb1 29.Kg2 h5 30.Ra4 Kg5 31.h4 Kf5 32.Ra7 g6 (32...Kg6 33.a4+–) 33.Rf7 Ke4 34.Rf6 Ra1 35.Rg6 Ra3 36.c4 Kf5 (36...Ra4 37.c5+–) 37.Rg5 (better is 37.Rd6!? Ke4 38.f3 Kd3 39.Bb2 Kc4 40.Ba3 Kb3+–) 37...Ke4 38.Rh5 Ra2 39.c5 1–0. douglasricardo (2245) – workchess (2215), net–chess.com, 2011.

7.0–0 Ng6 8.Nc3 Be7 9.h3 0–0 10.d3 a6 11.Re1 b5 12.Nd2 Nd7 13.Rb1 Rac8 14.Bf3 Nb6 15.Ne2 c5 Black prepares the advance d4 16.Ba1 Nh4 17.e4? (17.Bh5 Qc6 18.c3 g6 19.bc5 Bc5–+ (19...gh5?! 20.cb6 Ba3 21.Ng3+=)) 17...d4 (17...Nf3 18.Nf3 de4 19.de4 Qd1 20.Red1 (20.Rbd1? cb4 21.ab4 Bb4–+) 20...cb4 21.ab4–+) 18.Nc1 Nf3 19.Nf3 c4 20.dc4 Bc4 21.Nd3 Na4 22.Nd2 Ba2 23.Rc1 Bc4 24.Qf3 (24.Rb1 Nc3 25.Bc3 Bd3 26.cd3 dc3 27.Qb3 Kh8+=) 24...Nb6 25.Nc5 Nd7 26.Nd7 Qd7 27.Nc4 Rc4 28.c3 Rfc8 29.Red1 (better is 29.Rcd1!?=) 29...Qb7 0–1. douglasricardo (2245) – ctrotter (2470), net–chess.com, 2011.

7.0–0 Ng6 8.d3 c6 9.Nbd2 Nd7 10.c4 Be7 11.Rc1 0–0 12.Qc2 Bd8 13.Qb1 Bc7 14.Rfd1 Rae8 15.Ba1 Bb8 16.a4 Bg4 17.g3 h5 (17...Be6 18.c5 Qc7 19.Qc2=) 18.c5 Qe7 19.e4 h4?? (better is 19...d4=) 20.Nh4+– (worse is 20.gh4 Nf4 21.Re1 Qf7–/+) 20...Nh4 21.Bg4 f5 22.Bh3 (22.gh4?! fg4 23.ed5 cd5=) 22...Qg5 23.Kh1 Re6? (better is 23...Ng6 24.Bf5 Rf7+–) 24.gh4 Qh4 25.Bf5 Rh6 26.Nf3 (better is 26.Nf1+–) 26...Qf4 Attacks the backward pawn on h2 27.Kg2 (27.Rg1!? Qf3 28.Rg2+/–) 27...Rf5= 28.ef5 Qg4 29.Kf1 Qf3 30.Qb2 Rh2 31.Ke1 Qf5 32.b5? (32.Qe2 Qf4 33.Qe3 Qb4 34.Ke2 Qg4 35.Qf3 Qa4–+) 32...Bc7 (32...Qg5 33.Rb1 Nc5 34.Qe2 Rh1 35.Qf1–+) 33.b6? (33.Qe2 Ba5 34.Bc3 Rh1 35.Kd2 Qf4 36.Kc2 Qa4 37.Kd2 Qa2 38.Rc2 Bc3 39.Kc3 Qa5 40.Kb2 Rd1 41.Qd1 Qb5 42.Kc1 Nc5 43.Rc3–+) 33...ab6 (better is 33...Qg5!? 34.bc7 Qg1 35.Kd2 Qf2 36.Kc3 Qc5 37.Kb3 Rb2 38.Bb2 Qb6 39.Kc2 Qc7 40.Ra1–+) 34.cb6?? (34.Qe2–+) 34...Bb6 (34...Bb6 35.Qe2 Bf2 36.Kd2 Be3 37.Kc3 Re2–+) 0–1. Nollet,Fabrice (1690) – Lui,Eric (1945), 6th Lille France, LUC Open, 2015.

7.0–0 Ng6 8.d3 Be7 9.Nbd2 0–0 10.c4 c5 11.cd5 Qd5 12.e4 Qd7 13.bc5 Bc5 14.Rc1 Rc8 15.Nc4 (better is 15.d4 ed4 16.Nd4 Bd4 17.Rc8 Qc8 18.Bd4+=) 15...Nf4–/+ 16.Nce5 Ne2 17.Qe2 fe5 18.Be5 Ba3 19.Rc8 Qc8 20.Rb1 Nc6 21.Bb2 Bb2 22.Rb2 (22.Qb2 b6–+) 22...Bg4 23.Qe3 Bh5 24.Nd2 Ne5 25.f3?? (better is 25.Rb5 Ng4 26.Qg3 Qc1 27.Nf1–+) 25...Qc1 26.Nf1 Qb2 27.Qc5 (27.d4 Nc4 28.Qf2 Qf2 29.Kf2 a5–+) 27...Bf7 (27...Bf3 28.Nd2 Qd2 29.Qf2–+) 28.d4 (28.Qd6–+) 28...Nd3 0–1. workchess (2215) – ctrotter (2470), net–chess.com, 2011.

7.Nc3 Nd7 8.0–0 0–0–0 9.d4 e4 10.Nd2 Qc6 =.

6.Qc1 Nd7

7.Bb5 c6 8.Be2 c5 =+.

7.c4 dc4 8.Bc4= Bc4 (8...e4 9.Be6 Qe6 10.Nd4=) 9.Qc4 Nb6 10.Qc2 Ne7 11.0–0 Qc6 12.Nc3 Ned5 13.Rfc1 Nc3 14.Bc3 (< 14.Qc3 Qc3 15.Bc3 e4=) 14...Bd6 15.d4 e4 16.Nd2 f5 17.Qb3 Qd5 18.Qd5 (18.Qd1 0–0=) 18...Nd5=+ 19.Nc4 0–0 (19...Rd8 20.Nd6 Rd6 21.b5=) 20.Nd6= cd6 (< 20...Nc3 21.Rc3 cd6 22.Rac1+=) 21.Bd2 (21.Rc2 f4 22.ef4 Nf4= (< 22...Nc3 23.Rc3 Rac8 24.Rac1 Rc3 25.Rc3+=)) 21...Rac8=+ 22.h3 g5 23.Rc8 Rc8 24.Rc1 Rc1 25.Bc1 b5 26.Kf1 f4 27.Ke2 Kf7 28.f3 ef3 (28...Nc3 29.Ke1 Na2 30.Bd2 ef3 31.gf3 fe3 32.Be3+=) 29.Kf3= fe3 30.Be3 Kf6 31.Bd2 Nb6 32.Kg4 h6 33.Kh5 (33.h4 gh4 34.Bh6 Kg6+/–) 33...Nc4 34.Bc1 Kg7 35.h4 gh4 36.Bh6 (36.Kh4?! d5=) 36...Kf6 (better is 36...Kh7!?=+) 37.Bc1+= Kf5 38.Kh4 The passed pawn on g2 will quickly become a dangerous weapon (38.Bg5!?=) 38...Ke4=+ 39.g4 Kd4 (39...d5 40.g5 Kd4 41.g6+/–) 40.g5= Kd5 (40...d5 41.g6 Ke5 42.g7+–) 41.Kh5 Ke6 42.g6 Ne5 (42...d5 43.g7 Kf7 44.Kh6=) 43.Bb2 Ng6? (better is 43...Nc4 44.g7 Kf7+=) 44.Kg6+– Kd5 45.Kf5 a5? (45...Kc4+–) 46.ba5 Kc6 47.Bd4 Kb7 ½–½. Szczepaniak,Alicja – Hoffmann,Piotr, corr 1. AMM Poland, 1991.

7.c4 c6 8.Nc3 (8.cd5 Bd5 9.Nc3 Bf3 10.gf3 f5=) 8...Rc8 (8...dc4 9.Ne4 Qd5 10.Nc3=) 9.Be2 (9.c5 Qe7=) 9...Be7 (9...dc4 10.Ne4 Qd5 11.Nc3=) 10.0–0 (10.c5 Qc7+=) 10...Nh6 (10...dc4!? 11.Ne4 Qd5–/+) 11.d4 (11.c5 Qc7+=) 11...e4 (11...dc4!? 12.Rd1 Bd5=) 12.cd5+= cd5 (12...Bd5!? 13.Nd5 Qd5+/–) 13.Ne4!+/– Qb8 (13...de4 14.Qc8 A double attack) 14.Nc3 0–0 15.Qd2 f5 16.Na4 Bd6 (16...f4 17.Nc5 fe3 18.Qe3 Nc5 19.bc5+/–) 17.Nc5+– Rf6 18.Nd7 (18.Bb5 Qc7+–) 18...Bd7 19.Ne5 Ng4? (19...Be6 20.Rfc1+–) 20.f4 (better is 20.Nd7 Bh2 21.Kh1+–) 20...Be6 21.Bg4 (21.Rac1!?+–) 21...fg4+/– 22.e4 (22.Rac1!?+/–) 22...de4= 23.d5 (23.Qe2 Bf5=) 23...Bf5 (23...e3 24.Qd3 Bf7 25.Nd7+–) 24.Rac1 Rcf8 (24...Rc1 25.Rc1 g3 26.hg3+/–) 25.Nc4 (25.Qe3 b5+=) 25...Rh6 (25...R6f7 26.Qe3=) 26.Be5+= Qd8 (better is 26...Bc7!?+=) 27.Nd6+– Rd6 28.Bd6 Qd6 29.Qd4 a6 (29...Re8 30.Rfe1+–) 30.Qe5 Qb6 31.Kh1 Qb5 (31...g3 32.Rc7 Qh6 33.h3 Bh3 34.Rg7 Qg7 35.Qg7 Kg7 36.gh3=) 32.Rfe1 Qd3 (32...b6 33.Rc7 Rf6 34.Qe7+–) 33.Rc7 Do you see the mate threat? 1–0. Skonieczny,Jerzy – Mierzynski,Jaroslaw, corr Poland, 1995.

7.c4 c5

8.cd5 Bd5 9.bc5 Nc5 10.Bb5 Bc6 11.d4 ed4 12.Qc4 de3 13.fe3 Bb5 14.Qb5 Qd7 15.Qd7 Kd7 16.Ke2 –/+.

8.cd5 Bd5 9.bc5 Nc5 10.Bb5 Bc6 11.d4 ed4 12.Bc6 Qc6 13.0–0 –/+.

8.d4! +=. Schiffler – Roth, Riesa 1952.

6.Nc3 c6

7.d3 Nd7 8.Ne2 Be7. vbj (2065) – luminarydebris (1620), net–chess.com, 2011.

7.Be2 Nd7

8.0–0 0–0–0 =.

8.0–0 Be7 9.d3 (9.Rb1 Nh6=) 9...Nh6 10.Nd2 f5 (10...0–0 11.f4=+) 11.f4 0–0 12.Qe1 d4 (12...a5 13.b5=) 13.fe5 Ne5 14.Nd1 (14.ed4 Qd4 15.Qf2 Qf2 16.Rf2 a5=+) 14...de3 (14...Neg4!? 15.Bg4 Ng4=+) 15.Ne3= f4 (15...Rae8 16.Ndc4 Nc4 17.Nc4=) 16.Nd1 (16.Ne4 Qc7 17.Nc4 Nc4 18.dc4 Rae8=) 16...Rf7 (16...Rae8 17.Ne4 Qd5 18.Qc3+=) 17.Ne4= Qc7 18.Qc3 Neg4 Black gets in control 19.Bf3 Raf8 20.Re1 Bh4 21.Re2 Bd5 (21...Re8 22.Qc5 b6 23.Qh5+=) 22.Nc5 (22.Qd4!?+=) 22...Bf6= 23.d4 Re7 24.h3 (24.Re7 Qe7 25.Nf2 Nf2 26.Kf2 Nf5–/+) 24...Re2=+ 25.Be2 f3! 26.hg4? (26.Qf3 Bf3) 26...fe2–+ 27.Ne3 Bh4 28.Nd5 cd5 29.Qh3?? (better is 29.Ne6 Qc3 30.Bc3 Bf2 31.Kh2–+) 29...Bf2 30.Kh1 Be1!! (31.g3 Bg3–+) 0–1. Maciejewski,Roman – Hoffmann,Piotr, corr 1. AMM Poland, 1991.

8.0–0 Nh6 9.b5 Be7 10.bc6 bc6 11.Rb1 0–0 12.d4 e4 13.Ne1 f5 14.f3 Nf7 15.Qd2 Qc7 16.Na2 a5 17.c4 dc4 18.Qc2 Nb6 (18...Nd6 19.Nc3 Bd5 20.Kh1+=) 19.fe4= fe4 20.Qe4 Bd5 21.Qg4 Nh6 (21...Bd6 22.Nc3 Bh2 23.Kh1+=) 22.Qh3 Rf1 23.Bf1 Be4?? (better is 23...Qd6=) 24.Qe6+– Kh8 25.Qe4 Bd6 26.Nf3 Nd5 (26...Ng8 27.Qh4+–) 27.Bc4 Nf6 28.Qd3 Nhg4 (28...Re8 29.Re1+–) 29.h3 Bh2 30.Kf1 Nh6 31.e4 Rf8 32.e5 Nh5 33.a4 Nf4 34.Qa3 Qc8 (34...Ng6 35.Qc5+–) 35.Nh2 Qf5 36.Rc1 Nd3 37.Nf3 Nc1 38.Bc1 g5 (38...Ng8+–) 39.Be6! 1–0. themonkey (2110) – NN, GameColony.com, 2002.

8.0–0 Nh6 9.d4 e4 10.Nd2 Be7 (10...Qc7 11.Na4 a5 12.Nc5 Nc5 13.bc5=) 11.Nb3 (11.Na4 a5=) 11...0–0+= 12.Rc1 f5 13.Na4 b6 14.Nd2 (14.Qd2 Rf6 15.h3 Rg6–/+) 14...Kh8 (14...Ng4 15.g3–/+) 15.f4 (15.g3!?+=) 15...ef3!–/+ 16.Bf3 (16.Nf3 Ng4 Combination; 16.Bf3 a5 Combination; 16.Rf3 Ng4 Combination; 16.gf3 f4 Combination) 16...Ng4 (16...Bg5!? 17.Qe2 Nf6–/+) 17.Bg4 fg4 18.Qe2 (18.e4 Rf1 19.Qf1 a5 20.ba5 Ra5+=) 18...Nf6 (18...g3 19.hg3 Qg3 20.Rf3 Rf3 21.Nf3–+) 19.Nc3 (19.e4 de4 20.Qe3 Rae8 21.Ne4 Ne4 22.Rf8 Rf8 23.Qe4 g3–+) 19...Qd7 (19...g3 20.h3–/+) 20.g3 (20.e4 de4 21.Nde4 A) 21...Qd4 22.Nf2 g3 23.hg3+= (worse is 23.Qe6 gf2 24.Rf2 Bb4 25.ab4 Rae8–/+); B) 21...b5–/+) 20...a5 21.b5 Rac8 (21...Rae8 22.bc6 Qc6 23.Nb5–/+) 22.a4 (22.bc6 Qc6 23.Nb5 Qb7+=) 22...h5 (22...c5–/+) 23.Rce1? (better is 23.bc6 Rc6 24.Nb5–/+) 23...cb5–+ 24.ab5 (24.Qb5 Qb5 25.ab5 Bb4–+) 24...Bb4 25.Qd3 (25.Ndb1 Qc7–+) 25...Qc7 26.Ndb1 (26.Nd5 Nd5 27.c4 Bd2 28.Qd2 Qc4–+) 26...Bg8 (better is 26...h4!? 27.e4 Ne4 28.gh4–+) 27.Re2 (27.Rc1 Bh7 28.Qe2 Qb7–+) 27...Bh7 28.Qd1 Qd7 29.Ref2 Bg6 (29...Kg8 30.Qe2–+) 30.Na4 (30.e4 de4 31.Qe2–+) 30...Qb5 31.c3 Be7 (31...Ne4 32.Rf8 Bf8 33.c4–+) 32.Na3 (32.Ba3 Ba3 33.Na3 Qe8–+) 32...Qc6 33.Qb3 (33.c4 dc4 34.Nc4 Qc4 35.Nb6 Qb5 36.Nc8 Rc8–+) 33...Nd7 (better is 33...Be8 34.Nb6 Rb8 35.c4 Rb6 36.cd5 Rb3 37.dc6 Ba3 38.c7–+) 34.Nb5 (34.Rf8 Rf8 35.Rf8 Bf8 36.Bc1–+) 34...Rf2 35.Rf2 Qc4 (35...Qc4 36.Qc4 Rc4 (36...dc4?! 37.Bc1–/+) 37.Nb6 Nb6–+) 0–1. Havlicek,Pavel (1705) – Pavlicek,Petr (2000), Ricany CZE, Open, 2012.

8.d4 e4 9.Nd2 Nh6 10.0–0 Nb6 11.Nb3 Qc7 (11...0–0–0 12.Nc5=) 12.h3 (12.Nc5 Bf5+=) 12...Be7 (12...Bd6 13.Nc5 Qe7 14.Ne6 Qe6 15.b5=) 13.Nc5 Bf7 (13...Bf5 14.Bh5 Nf7 15.Bf7 Kf7 16.Qh5 Bg6 17.Qg4–/+) 14.Re1 (14.f3 ef3 15.Rf3 Bh5+–) 14...Nf5 15.Bg4 Nd6 16.Ra2 (16.Ne6 Be6 17.Be6 Nbc4=) 16...f5 17.Bh5 (17.Be2 Nbc4=+) 17...g6 (17...0–0 18.Bf7 Rf7 19.Ne6–/+) 18.Be2= Nbc4 19.Qc1 0–0 20.a4 b6 21.Na6 Qc8 22.b5 Be8 23.Nb4 Nb5 (23...Qb7 24.Ba3=+) 24.Nbd5= cd5 25.Nd5 (25.ab5 A) < 25...Nb2 26.Nd5 (26.Qb2?! Qe6+=; 26.Rb2? Qc3 27.Rb3 Qc7–+) 26...Bd6 27.Qb2+/–; B) 25...Bb4 26.Nd5 Bd6+=) 25...Bd8 (25...Bd6 26.ab5 Bb5 27.Qa1+=) 26.ab5= Bb5 27.Nc3 Be8 (27...Bd7 28.Rd1=) 28.Qa1 (28.Rd1 Be7+=) 28...Nb2 29.Qb2 Bf7 30.Ra6 Bc4 31.Ra4 (31.Bc4 Qc4 32.Nb5 Rc8+=) 31...Be2= 32.Qb3 Kg7 33.Re2 Rf6 (33...Be7 34.Nd5 Bd6 35.c4=) 34.Nd5+= Rc6 35.c4 Kh6 (35...Bc7 36.Ne7 (36.Nc7?! Qc7 37.Rd2 Rc8+=) 36...Qd7 37.Nc6 Qc6 38.Rea2+–) 36.Qb4 Bc7 37.Ne7 (37.Rd2!?+/–) 37...Bd6= 38.Qd6 Rd6 39.Nc8 Rc8 40.Ra7 Rc4 41.Kh2 g5 42.g4 (42.Rea2 b5=) 42...fg4 43.hg4 Rcc6 44.Re7 Re6 45.Rc2 Rcd6 46.Rcc7 Re7 47.Re7 b5 (47...Rf6!?+=) 48.Re4+/– b4 49.d5 Rb6 50.d6 Rd6 (50...b3 51.d7 b2 52.d8Q+–) 51.Rb4 Kg6 ½–½. Mitrus,Cezary – Sokolik,Bogdan, corr 1. AMM Poland, 1991.

7.Be2 Nh6

8.0–0 A) 8...Nd7 9.Nh4 (9.d4 e4 10.Nd2 Qc7 11.g3 Be7 12.Na4 b5 13.Nc5 Nc5 14.dc5 0–0; 9.b5 Be7 10.a4 0–0 11.bc6 bc6 12.Ba3 c5 13.h3 a6 14.d3 Rab8; 9.Re1 Be7 10.b5 0–0 11.a4 c5 12.Ba3 Nf7 13.d4 Ng5 14.Ng5 fg5) 9...Be7 10.f4 0–0 11.f5 Bf7 12.Qe1 e4 13.d3 ed3 14.cd3 Qc7; B) 8...Be7 B1) 9.Qb1 0–0 (9...Nd7 10.h3 0–0 11.Rd1 Nb6 12.b5 Nf5 13.g4 e4 14.gf5 ef3) 10.Qa2 Nd7 11.h3 Nb6 12.Qb3 Nc4 13.Rfe1 b5 14.Bc4 dc4; B2) 9.Qe1 0–0 (9...a5 10.b5 0–0 11.a4 Nd7 12.h3 Qc7 13.Nh4 d4 14.ed4 ed4; 9...Nd7 10.d3 0–0 11.Qd2 Nf5 12.h3 a5 13.g4 ab4 14.ab4 Nh6) 10.Nh4 Nd7 11.f4 ef4 12.ef4 a5 13.b5 Rfe8 14.f5 Bf7; B3) 9.Ne1 0–0 (9...Nd7 10.Nd3 0–0 11.e4 d4 12.Na4 b6 13.c3 f5 14.cd4 ed4) 10.Nd3 Nd7 11.e4 Nb6 12.ed5 cd5 13.Nc5 a6 14.Re1 Bc8; B4) 9.Nh4 0–0 (9...Nd7 10.f4 0–0 11.f5 Bf7 12.Qe1 e4 13.b5 Qc7 14.Qg3 Qg3; 9...f5 10.Nf3 0–0 11.Na4 Nd7 12.Nc5 Bf6 13.Ne6 Qe6 14.h3 Nf7; 9...a5 10.f4 ef4 11.ef4 ab4 12.ab4 Ra1 13.Ba1 Qb4 14.Bh5 g6) 10.f4 Nd7 11.f5 Bf7 12.Qe1 a5 13.b5 Rfd8 14.a4 e4.

8.Na4 Na6 A) 9.0–0 Be7 10.Ba6 ba6 11.Nc5 0–0 12.Qe2 a5 13.Bc3 Bf7 14.Rab1 Qc7; B) 9.h3 Be7 (9...Qd7 10.0–0 Bd6 11.Ba6 ba6 12.Qe2 Qb7 13.Rab1 Qb5 14.Qb5 ab5; 9...b5 10.0–0 Be7 11.Nc3 0–0 12.a4 Nb4 13.ab5 c5 14.d3 Qc7; 9...Qc7 10.0–0 Be7 11.b5 cb5 12.Bb5 Kf7 13.d4 e4 14.Nd2 Qd6; 9...Nf5 10.Ba6 ba6 11.g4 Nh6 12.Nc5 Be7 13.Qe2 0–0 14.Ne6 Qe6) 10.Ba6 ba6 11.Nc5 0–0 12.0–0 a5 13.Qe2 Bf7 14.Bc3 Rfb8; C) 9.c4 dc4 10.Qc2 b5 11.Nc3 Be7 12.d4 Bf5 13.e4 ed4 14.Nd4 Qd4; D) 9.Ba6 ba6 10.Nc5 Be7 11.Qe2 a5 12.0–0 0–0 13.Bc3 Bf7 14.h3 Rfb8.

8.Na4 Qc7 A) 9.Qc1 Bd6 (9...Nd7 10.c4 Bd6 11.cd5 cd5 12.Qc7 Bc7 13.Nc3 Ke7 14.0–0 Rac8; 9...Be7 10.0–0 Nd7 11.h3 a5 12.b5 0–0 13.c4 Rfc8 14.cd5 cd5) 10.c4 Nd7 11.0–0 0–0 12.cd5 cd5 13.Qc7 Bc7 14.Rac1 Rfc8; B) 9.0–0 Nd7 10.h3 Be7 11.d3 b5 12.Nc3 0–0 13.Qe1 a5 14.Qd2 Qb6; C) 9.h3 Nd7 (9...Bd6 10.0–0 Nd7 11.Rc1 0–0 12.b5 c5 13.c4 d4 14.Bd3 Nf5; 9...Be7 10.d4 e4 11.Nd2 Nd7 12.c4 dc4 13.0–0 0–0 14.Nc3 Nb6) 10.d4 e4 11.Nd2 Kf7 12.c4 Nf5 13.cd5 cd5 14.Rc1 Qd8; D) 9.d4 Nf7 (9...Nd7 10.de5 Ne5 11.Nd4 Bd7 12.0–0 0–0–0 13.Nc5 Bc5 14.bc5 Qa5; 9...e4 10.Nd2 Bd6 11.c4 0–0 12.cd5 cd5 13.Rc1 Qe7 14.Nc5 Bc5; 9...b5 10.Nc5 Bc5 11.dc5 0–0 12.a4 ba4 13.Ra4 Nd7 14.Ra5 Nf5) 10.0–0 Nd7 11.de5 fe5 12.Nh4 Be7 13.Bg4 Bg4 14.Qg4 Nf6.

8.Na4 Nd7 9.d4 (9.0–0 Be7 10.d3 0–0 11.Qd2 b5 12.Nc5 Nc5 13.bc5 Qc5 14.d4 ed4; 9.d3 Be7 (9...Rd8 10.0–0 Be7 11.Qd2 0–0 12.h3 Nf5 13.Nc3 Qc7 14.Rfe1 Nb6; 9...a5 10.0–0 Kf7 11.Bc3 ab4 12.ab4 Be7 13.Qd2 Nf5 14.g4 Nh6; 9...Qc7 10.c4 dc4 11.dc4 Be7 12.0–0 0–0 13.Qc2 Nf7 14.Bd3 g6; 9...b6 10.0–0 Be7 11.c4 0–0 12.h3 a5 13.ba5 Ra5 14.cd5 cd5) 10.0–0 0–0 11.c4 a5 12.cd5 Bd5 13.e4 Be6 14.d4 ab4; 9.Rc1 Be7 10.0–0 0–0 11.Nc3 Qc7 12.h3 a5 13.b5 Nf5 14.Rb1 e4; 9.h3 Be7 10.0–0 0–0 11.Nc3 Qc7 12.Re1 Nb6 13.Bd3 Nf5 14.e4 de4) 9...e4 10.Nd2 b5 (10...Be7 11.c4 0–0 12.cd5 cd5 13.0–0 Bf7 14.Nc3 Nf5) 11.Nc3 (11.Nc5 a5= (11...Kf7 12.0–0 Nb6 13.Ndb3 Nf5 14.Bc3 Rb8) 12.0–0 Kf7 13.a4 ba4 14.Ra4 Nc5) 11...Be7 12.Nf1 (12.Nb3 Qc7+= (12...0–0 13.0–0 Nf5 14.Nc5 Nc5) 13.a4 Bb4 14.0–0 ba4; 12.a4 ba4 13.Ra4 0–0 14.0–0 Nf5) 12...0–0–/+ 13.Ng3 f5 (13...Nb6 14.0–0 a5) 14.Nh5 Ng4 (14...a5+=) 15.Nf4 Rf6 (15...a5 16.h3 Ngf6 17.Na2–/+) 16.h3 Rh6 17.Rg1 (17.a4 Qb4 18.Ra2 Nf8 19.ab5 a5+/–) 17...Nh2 (17...Ngf6 18.a4 Bf7 19.ab5+=) 18.Kd2 (18.Rh1 Ng4=) 18...Bf7 19.g4? (better is 19.Rh1!?+=) 19...Bg5–+ 20.Nh5 f4 21.Qe1 (21.Nf4 Bf4 22.ef4 Qf4 23.Ke1 e3–+ (23...Rh3?! 24.Qd2 Nf3 25.Bf3 Qf3 26.Qd1–+)) 21...Re8 22.Nd1 Nf3–+ 23.Bf3 ef3 24.h4 fe3 25.fe3 Qh2 26.Kc3 Be3! 27.Rh1 f2 28.Qf1 Bd4! 29.Kd4 Qe5 30.Kd3 Qe4 31.Kd2 Bg6 32.Rc1 Nb6 33.Bg7 Nc4 34.Kc3 Qf3 35.Kd4 c5! 36.Kc5 Rc8 37.Kd4 Rh5 38.Qf2–+ Qh1 39.gh5 Qe4 40.Kc3 Ne3 41.Kb2 Rc2 42.Rc2 Nd1 (42...Nd1 43.Kc1 A) 43...Qc2 44.Qc2 Bc2 45.Bd4–+; B) 43...Kg7?? 44.Qa7 (44.Kd1?? Qc2 45.Qc2 Bc2 46.Kc2 Kh6–+) 44...Kh8 45.hg6 Qe3 46.Qe3 Ne3 47.gh7+–; C) 43...Nf2 44.hg6 Kg7 45.gh7 Kh7–+) 0–1. Vukovic,L (1950) – Damjanovic,L (2125), Winter Open, Belgrade SRB, 2008.

8.Na4 Be7 9.Nc5 Bc8 (9...0–0 10.Nb7 Qc7 11.Na5 c5 12.c4 e4 13.Nh4 cb4 14.ab4 g5; 9...Nd7 10.Nb7 Qc7 11.Na5 0–0 12.c4 Nf5 13.cd5 Bd5 14.Qc2 e4) 10.0–0 Nd7 11.c4 0–0 12.Qb3 Nf7 13.d4 b6 14.Na4 Bb7.

8.h3 A) 8...Nd7 A1) 9.0–0 Be7 10.Re1 0–0 11.d3 Qc7 12.Qd2 Nf5 13.e4 Nd6 14.ed5 cd5; A2) 9.d3 Be7 (9...a6 10.0–0 Be7 11.Qd2 0–0 12.Rfe1 Qc7 13.Nh4 b5 14.Bh5 a5; 9...a5 10.0–0 Be7 11.b5 0–0 12.a4 Nc5 13.d4 ed4 14.ed4 Ne4) 10.0–0 0–0 11.Rb1 Nb6 12.Qd2 Qd7 13.Rfe1 Nf5 14.Rbd1 Qc7; A3) 9.Qc1 a6 (9...Be7 10.0–0 0–0 11.d3 Qc7 12.Qd2 Nf5 13.Rfe1 a5 14.b5 Nc5; 9...Nb6 10.0–0 Be7 11.d3 0–0 12.Qd2 a5 13.ba5 Ra5 14.a4 Rfa8; 9...a5 10.b5 Be7 11.0–0 0–0 12.Qe1 Nf5 13.bc6 bc6 14.Rb1 Qc7) 10.0–0 Be7 11.Na4 0–0 12.c4 dc4 13.Bc4 b5 14.Be6 Qe6; A4) 9.Rb1 Be7 (9...Qc7 10.0–0 Be7 11.b5 0–0 12.bc6 bc6 13.e4 d4 14.Na4 Rab8; 9...a6 10.0–0 Be7 11.Re1 0–0 12.d3 Qc7 13.Qd2 Nf5 14.Rbd1 Nb6; 9...a5 10.b5 Be7 11.0–0 0–0 12.a4 c5 13.Ba3 Nb6 14.d4 Qc7; 9...Nb6 10.0–0 Be7 11.d3 0–0 12.Qd2 Qd7 13.Rfe1 a5 14.ba5 Ra5) 10.0–0 0–0 11.d3 f5 12.Na4 Nf7 13.c4 Ng5 14.Qc2 f4; B) 8...Be7 B1) 9.d3 Nd7 (9...0–0 10.Qd2 Nd7 11.0–0 Nf5 12.b5 Nc5 13.d4 ed4 14.Nd4 Rab8; 9...Qc7 10.0–0 0–0 11.Qd2 Nd7 12.Nh4 b5 13.Bh5 f5 14.Nf3 a5; 9...a6 10.0–0 0–0 11.Qd2 Nd7 12.a4 Qc7 13.Rfd1 a5 14.b5 Nf5; 9...a5 10.0–0 0–0 11.b5 Nd7 12.Qd2 Nf5 13.g4 Nh6 14.a4 Nf7) 10.0–0 0–0 11.Qd2 Nf5 12.Na4 Rfd8 13.Rfc1 Qc7 14.Re1 a5; B2) 9.0–0 0–0 (9...Nd7 10.b5 0–0 11.a4 c5 12.Ba3 Nf5 13.e4 de4 14.Ne4 Qc7; 9...a5 10.b5 0–0 11.a4 Nd7 12.bc6 bc6 13.Ba3 c5 14.e4 de4) 10.d3 Nd7 11.Qd2 Nf5 12.g4 Nh6 13.Rfe1 Nf7 14.Kg2 a5.

8.Nh4 A) 8...Nd7 A1) 9.Bh5 g6 10.Be2 Be7 11.0–0 0–0 12.Nf3 Nb6 13.h3 Nf5 14.Re1 Qc7; A2) 9.Rb1 Be7 10.0–0 0–0 11.g3 Nb6 12.f4 ef4 13.ef4 f5 14.d4 Bh4; A3) 9.b5 Be7 (9...f5 10.0–0 Be7 11.bc6 bc6 12.Nf3 0–0 13.Rb1 Rab8 14.h3 f4) 10.Bh5 g6 11.Be2 f5 12.bc6 bc6 13.Nf3 0–0 14.Na4 Bf6; A4) 9.0–0 Be7 10.f4 0–0 11.f5 Bf7 12.Qe1 e4 13.d3 ed3 14.cd3 Qc7; B) 8...a5 B1) 9.0–0 Be7 (9...ab4 10.ab4 Ra1 11.Qa1 Qb4 12.Nf3 Bf5 13.d3 Na6 14.Rb1 Be6) 10.f4 ef4 11.ef4 ab4 12.ab4 Ra1 13.Ba1 Qb4 14.Bh5 g6; B2) 9.b5 Be7 (9...Nd7 10.0–0 Be7 11.bc6 bc6 12.f4 Rb8 13.Rb1 ef4 14.ef4 0–0) 10.0–0 0–0 11.a4 Nd7 12.bc6 bc6 13.Ba3 c5 14.f4 ef4; B3) 9.ba5 Be7 (9...Ra5 10.0–0 Be7 11.f4 0–0 12.f5 Bf7 13.Rf3 Nd7 14.Rg3 Nc5) 10.d4 0–0 11.0–0 Ra5 12.Qd2 Nd7 13.f4 Qc7 14.a4 ef4; C) 8...Be7 C1) 9.Bh5 g6 10.Be2 0–0 11.0–0 Nd7 12.g3 Nb6 13.d3 a5 14.ba5 Ra5; C2) 9.h3 0–0 (9...Nd7 10.Bh5 g6 11.Be2 e4 12.g3 g5 13.Ng2 0–0–0 14.h4 Nf7; 9...a5 10.0–0 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.Nf3 0–0 14.Rb1 b5; 9...e4 10.g4 0–0 11.d3 ed3 12.cd3 Nd7 13.Nf3 a5 14.b5 c5) 10.Nf3 Nd7 11.0–0 Nb6 12.Re1 Nf5 13.e4 Nd4 14.ed5 Ne2; C3) 9.d3 Nd7 (9...0–0 10.0–0 Nd7 11.Qd2 a5 12.b5 Nf5 13.Nf5 Bf5 14.d4 Qc7; 9...a5 10.b5 0–0 11.0–0 Nd7 12.Qd2 Nf5 13.Nf5 Bf5 14.d4 Qc7; 9...f5 10.Nf3 0–0 11.Na4 Nd7 12.Nc5 Nc5 13.Be5 Qd7 14.bc5 Bc5) 10.0–0 0–0 11.Qd2 a5 12.b5 Nf5 13.Nf5 Bf5 14.d4 Qc7; C4) 9.0–0 Nd7 (9...0–0 10.f4 Nd7 11.f5 Bf7 12.a4 Qb4 13.Ba3 Qh4 14.Be7 Rfe8; 9...a5 10.b5 0–0 11.a4 Nd7 12.g3 c5 13.d4 cd4 14.ed4 Rfe8) 10.f4 0–0 11.f5 Bf7 12.Qe1 e4 13.d3 ed3 14.cd3 Qc7.

6.d3 a5

7.b5 a4 8.Nbd2 Nd7 9.Be2 Nh6 10.0–0 Nf7 11.c4 g6 12.Rc1 Bg7 13.d4 dc4 14.Bc4 Bc4 15.Nc4 Qe7 16.de5 Nde5 17.Nce5 Ne5 18.Ne5 fe5 19.Qd5 Rb8 20.Rc5 Qd7? (20...Rf8 21.Rfc1 (21.Be5?! Rd8 22.Qe4 Rf5+=) 21...Rd8 22.Qc4+/– (22.Qb7?? Qc5 23.h3 Qb6 24.Qc7 Qc7 25.Rc7 Rd1 26.Kh2 Rf2–+)) 21.Qd7 Kd7 22.Be5 Rbc8?? (better is 22...Be5 23.Re5 c6+–) 23.Bg7 (23.Bg7 Rhd8 24.Rc4+–) 1–0. bratek55 (1630) – concentrati (1755), kurnik, 2011.

7.b5 Qd7 =.

7.b5 Nd7 8.d4 =.

7.b5 c5

8.Nbd2 b6 9.c4 Ne7 10.a4 g6 11.Be2 Bg7 12.0–0 0–0 13.Qb3 Nd7 14.Rfd1 Rad8 15.Rac1 d4 16.Ne4 Qc7 17.Rf1 (17.ed4 ed4 18.Re1 Nf5=) 17...h6 (better is 17...de3!? 18.Rce1 Bh6–/+) 18.Rce1= f5 19.Ned2 Nf6 20.Qc2 Rfe8 21.ed4 cd4 (21...ed4 22.Bd1 Qd6 23.Bc1=) 22.Nb3 (22.Bd1!?+/–) 22...Bf7 23.c5 bc5 24.Nc5?? (24.Qc5 Qc5 25.Nc5 Rc8=) 24...Rc8 (24...Rd5 25.Rc1 Rc8–/+) 25.Rc1+= Ned5 26.Ba3 (26.Qd2 Nc3 27.Bc3 dc3 28.Rc3 e4 29.de4 Nd7+= (29...Ne4?! 30.Ne4 Bc3 31.Nc3 Qc3 32.Rd1–+)) 26...Nb4 (26...Nc3!? 27.Nb3 Qb8 28.Na5 Nb5–/+) 27.Bb4 ab4 28.Nd2? (28.Qb2 Qa5–/+) 28...Nd5 (better is 28...Bf8!? 29.Ndb3 Qb6–+) 29.Ndb3–/+ Nc3 30.Bf3 e4 31.de4 fe4 32.Ne4 Qe5 33.Nec5 Rc5 34.Nc5 Qc5 35.Rfe1 Rd8 36.Bc6 d3 37.Qd2 Qd6 38.a5 Ne2 39.Re2 de2 40.Qe2 Bc3 41.g3 Qc5 42.a6 Rf8 43.a7? (better is 43.Qe3 Qe3 44.fe3–/+) 43...Qa7–+ 44.Qe3 (44.Qg4–+) 44...Qe3 45.fe3 Bc4 46.Rd1 Rb8 47.Rd7 Bb5 48.Bb5 Rb5 49.Rd6 (49.Kf2–+) 49...b3 50.Rg6 Kf7 51.Rh6 (51.Rd6 b2 52.Rd1–+) 51...b2 0–1. elsh1403 – andrzej51 (1630), kurnik, 2013.

8.Nbd2 Nd7 9.c4 (9.Be2 Nb6 10.c4 Ne7=) 9...d4 (9...Ne7 10.Be2=) 10.ed4 (10.Ne4!? Qc7 11.Be2+=) 10...cd4= 11.Ne4 Qc7 12.g3 h6 13.Qe2 Ne7 14.Bg2 Bg4 15.0–0 Rc8 16.a4 (16.Rfc1 f5 17.Ned2 Qd6+=) 16...g5 (better is 16...Nc5=) 17.h3 Bf5 18.Nfd2 Kd8 (better is 18...Kf7+–) 19.c5 Nc5 20.Nc5 Qc5 21.Nc4 Nd5 22.Na5 Rh7 23.Qf3 Be6 24.Nc4 Be7 25.Rfc1 Qc7 26.a5 Bb4? (26...Qd7+–) 27.Nb6! Nc3 (27...Nb6 28.Rc7) 28.Qf6 (better is 28.Nc8 Bc8 29.a6 ba6 30.ba6 Bc5+–) 28...Re7 (28...Qe7 29.Qe5 Bd7 30.Nd7 Ne2 31.Kh2 Nc1 32.Qd4 Qd6+–) 29.Qf8 Re8 30.Qb4 (30...Ne2 31.Kh2 Nc1 32.Bc1+–) 1–0. Kleiser,Gregor (2155) – Benda,Herbert (2210), Graz, 1999.

8.Nbd2 Ne7 9.Be2 =.

6.d3 Nd7

7.Nbd2 c5 8.bc5 Nc5 (8...Qc5!? 9.d4 Qb6=) 9.d4+= Qb6 10.Rb1 ed4 (10...Na4 11.Bc1 Qc7 12.Bb5 Bd7 13.Ba4 Ba4 14.Nb3+=) 11.Nd4+/– Bd7 (11...Ne7 12.Bb5 Bd7 13.Bd7 Nd7 14.0–0+/–) 12.Qh5 Kd8 (12...g6 13.Qd5 Rd8 14.Bc3+/–) 13.Qd5+– Ne7 14.Qa2 Qa5 15.Bd3 (15.Rd1 Rc8+/–) 15...Nd5 (15...Nc6 16.Bc4+/–) 16.N4b3 (16.Bf5!? Ke8+/–) 16...Nd3+/– 17.cd3 White gets strong initiative. 17...Qb5 (17...Qa6 18.Nc5 Nb4 19.Qb3 Bc5 20.ab4+/–) 18.Nd4 Qa5 19.0–0 Bd6 (19...Rc8 20.Ne4+–) 20.Nc4+– Qa6 21.Nd6 Qd6 22.Rfc1 Ke7 (22...Re8 23.Qb3 b6 24.Rc2+–) 23.Qb3 Nb6 (23...Rhb8 24.a4 Nb4 25.Ba3+–) 24.a4! Qd5 (24...Na4 25.Ba3 A pinning theme) 25.Ba3 Kf7 (25...Kd8 26.Qb4 Re8 27.a5+–) 26.Qd5 Nd5 27.Rb7 Rhd8 28.Nc6 Ke8 29.Nd8 Kd8 (29...Rd8 30.Ra7 Rb8 31.d4+–) 30.e4 (better is 30.Rc5!? Be6+–) 30...Nf4 31.Rcc7 Ba4 (31...Bc8 32.Ra7 Ra7 33.Ra7+–) 32.Ra7 (better is 32.Rg7 Ne6 33.Rg8 Be8+–) 32...Ra7 33.Ra7 Bb5 (33...Bd7 34.Bf8 Ne6 35.Bd6+–) 34.g3 (34.d4 Bd7 35.d5 f5+–) 34...Nd3 (34...Ne2 35.Kg2+–) 35.Rg7 Ne1 (35...Bc6 36.f3+–) 36.Be7 Ke8 37.Bf6 Nf3 38.Kg2 Ne1 39.Kh3 Bd3 (39...h5 40.Re7 Kf8 41.Kh4+–) 40.Rh7 (40.Rh7 Kf8 41.Re7+–) 1–0. Kjellqvist,Niklas – Claesson,Bertil, Skara SWE, 1990.

7.Nbd2 c6 8.c4 Ne7 9.Be2 Ng6 10.h4 Be7 (10...h5!?+=) 11.h5+/– Ngf8 12.cd5 cd5 13.Rc1 Nb6 14.Nb3 Na4 15.Ba1 Rc8 (15...b6 16.d4 e4 17.Ne5+–) 16.Rc8 Bc8 17.Nbd4 (better is 17.d4!? e4 18.Nc5+/–) 17...Bd7= 18.Nf5 Bf5 19.Qa4 Qc6 Black prepares e4 20.Qc6 bc6 21.d4 e4 22.Nd2 Bc8 23.Nb3 g5 (23...Ne6!?+=) 24.Kd2 Ne6 25.Rc1 Bd7 26.Na5 (26.Nc5 Nc5 27.bc5 g4+/–) 26...Nd8+= 27.Bc3 Rg8 28.g3 (28.Nb3 Ne6+=) 28...Bd6 29.Rh1 Ke7 30.Kc2 Be8 31.Rh3 (31.Nb3 Ne6=) 31...Ne6 32.a4 c5 ½–½. Jacobi,Karl Heinz (1920) – Neese,Hans Joachim (2085), GER–ch Seniors–A, 2008.

7.d4 a5 8.b5 e4 9.Nfd2 f5 10.c4 Qe7 =.

7.Be2 a5 8.b5 Ne7 9.0–0 c6 10.Nc3 Ng6 =.

7.Be2 Nh6 8.0–0 Be7 9.Nbd2 0–0 10.c4 dc4 11.dc4 c5 12.Ne4 (12.Qc2 Qc7 13.Bd3 f5=) 12...Qc7 13.bc5 Nc5 14.Nc3 Rad8 15.Qc2 a6 16.a4 Nf5 17.a5 Nd6 The isolani on c4 becomes a target 18.Nd5 Bd5 19.cd5 Nf7 20.Bc4 Nd6 21.Be2 Qd7?? (21...Nf7 22.Bd3 g6 23.e4+=) 22.Nd2?? (better is 22.Qc5 Nf7 23.Qc2 Qd5 24.Bc4+–) 22...Rc8+= 23.Qd1 Rfd8 24.f4 Nf5 (24...e4 25.Nc4 Nc4 26.Bc4=) 25.Rf3 25.fe5? A) 25...Qd5? 26.Bc4 (26.Rf5?! Qd2 27.Bd4 Qd1 28.Rd1 Ne6+=) 26...Qc4 27.Nc4 Rd1 28.Rad1+–; B) 25...Ne3 26.Qe1 Qd5–+) 25...Kh8 (25...Qd5 26.Bc4 Qc4 27.Nc4 Rd1 28.Rd1=) 26.Rh3?? (better is 26.fe5!? fe5 27.Be5+=) 26...ef4 27.Bg4? (27.Nc4 Qd5 28.Qd5 Rd5 29.Nb6+=) 27...fe3?? (better is 27...Qd5 28.Qb1 fe3–+ (28...Qd2 29.Bf5 f3 30.gf3 Qe3 31.Kh1+=)) 28.Nc4= Qd5 29.Ne3?? (29.Qd5 Rd5 30.Nb6 Rcd8 31.Nd5 Rd5 32.Bf5 Rf5 33.Re3 Bf8+=) 29...Qe4 (better is 29...Ne3 30.Re3 Qd1 31.Rd1 Rd1 32.Bd1 Bf8–/+) 30.Qe2= Ne6?? (better is 30...Nd6 31.Bc8 Nc8+=) 31.Bf5+– (31.Nf5?! Bc5 32.Kf1 Qf4 33.Qf3 Qc4 34.Qe2 Qf4 35.Qf3 Qc4 36.Qe2 Qf4=) 31...Ng5 (31...Nf4 32.Rh7 Kg8 33.Rg7 Kf8+–) 32.Be4 Nh3 (32...Ne4 33.Rh4 Ng5 34.Bd4+–) 33.gh3 Bc5 34.Kg2 Re8 35.Nf5 Bb4 (35...Rc7 36.Rd1 Kg8 37.Bd5 Kf8 38.Qh5+–) 36.Qg4 Rc7 37.Qg3 Rd7 38.Bd3 (38.Rd1 Bd2 39.Nd6 Rd6 40.Qd6 Kg8 41.Qd5 Kh8 42.Qf5 Kg8 43.Qh7 Kf7 44.Qh5 g6 45.Bg6 Ke7 46.Qc5 Ke6 47.Rd2 b5 48.Qd6) 38...Bf8 39.Qh4 (better is 39.Ra4 Red8 40.Rd4 Rd4 41.Nd4 Bd6+–) 39...Rd3 40.Rf1 (40.Bf6!? Rd5 41.Qh5 Rf5 42.Qe8 Rf6+–) 40...Rd2 (40...Re2 41.Rf2 Rdd2 42.Re2 Re2 43.Kf3 Rb2 44.Qc4+–) 41.Rf2 Rf2 (41...Ree2 42.Re2 Re2 43.Kf3 Rb2+–) 42.Qf2 Rc8 (42...Rd8 43.Qe3 h6 44.Nh6+–) 43.Qb6 Rc2 44.Kg3 Rd2 (44...h5 45.Bd4 Rc1 46.Qb7+–) 45.Bc1 (45.Qb7 Rb2 46.Qb2 Bd6 47.Nd6 h6 48.Ne8 Kh7 49.Qb7 Kg6 50.Kf4 Kh5 51.Qg7 f5 52.Nf6 Kh4 53.Qh6) 45...Rd3 (45...Rd7 46.Qe6 Rc7 47.Qe8+–) 46.Kg4 Rc3 47.Qd8 Rc4 (47...Kg8 48.Qd5 Kh8 49.Qf7 h5 50.Kh5+–) 48.Kg3 Rc3 49.Be3 Kg8 50.Qd7 (better is 50.Qd5 Kh8+–) 50...Rb3 (50...h5+–) 51.Qd5 1–0. lefou (1915) – workchess (2215), net–chess.com, 2011.

7.Nbd2 a5

8.b5 =.

8.c3 =.

7.Nbd2 Be7

8.c4 c6 9.Be2 Nh6 10.0–0 0–0 11.Qc2 b6 (11...a5 12.Bc3=) 12.Rfc1+= a5 (12...Rfe8 13.cd5 cd5 14.Qa4+=) 13.b5 Rac8 (13...c5 14.cd5 Bd5 15.h3+=) 14.cd5 cd5 (14...Bd5? 15.e4 Be6 16.bc6+–) 15.Qc8 Rc8 16.Rc8 Nf8 17.Rc2 Nf7 (17...Qd8 18.Rac1+=) 18.a4 Qd8 19.Rac1 (19.h3 Bb4+=) 19...Bb4 20.Nf1 (20.Nb3 d4 21.Nfd2 de3 22.fe3 f5=) 20...Qe7 (20...Bd7 21.N3d2+=) 21.d4 (21.Rc6 Qd8+=) 21...e4 22.N3d2 f5 23.f4 (23.Rc7 Qd8+=) 23...Bd6 24.Rc6 Nd7 25.Rc8 (25.Kh1 g5 26.fg5 Ng5=) 25...Nd8 (25...Nf8 26.R8c6 Nd7 27.Ng3=) 26.g3 (26.Ng3 g5 27.fg5 Qg5=) 26...Nf6 (26...Nb8 27.R8c3=) 27.Ra8+= Kf7 28.Nb3 Bb4 29.Kg2 Ne8 30.Nfd2 g6 (30...Nf6 31.h3+=) 31.Bc3 (31.Nb1 Nf6+=) 31...Bc3 32.Rc3 Kg7 33.h4 Kh6 34.Rc1 Qd7 (34...Nf6 35.Ra6 Qb7 36.Nc5 bc5 37.dc5=) 35.Na5 (35.Rc2!?+=) 35...ba5= 36.Nb3 Qd6 37.Kf2 (37.Na5 Qa3 38.Rf1 Qe3–+) 37...Qa3+= 38.Rd8 Nf6 39.Rc7 Qb2 40.Rh8 (40.Nc1 Ng4 41.Kg1 Qd2 42.Bg4 Qe3 43.Kf1 fg4–+) 40...Bg8+= (40...Qb3?! 41.Rf8 Ng4 42.Bg4 fg4 43.Rh8 Qb2 44.Ke1 Qb1 45.Kf2 Qa2 46.Ke1 Qa1 47.Kd2 Qb2 48.Ke1=) 41.Nc1?? (41.Rg8 Ng8 42.Nc1–/+) 41...Ng4–+ 42.Kg1 Qd2 43.Bg4 (43.Rg8?? Qe1 44.Kg2 Qf2 45.Kh3 Qh2) 43...Qe3 44.Kf1 fg4 45.Rg8 Qf3 46.Ke1 e3 47.Rc2 Qg3 48.Ke2 Qf3 49.Kd3 e2 50.Kd2 Qf4 51.Ke2 Qe4 52.Kd1 (52.Kd2 Qd4 53.Ke1 g3–+) 52...Qd4 53.Ke1 g3 54.Ne2 (54.Rgc8 Qh4 55.Ne2 g2 56.Kd2 Qa4–+) 54...g2 55.Nd4 g1Q 56.Ke2 Qd4 57.Rgc8 (57.Rcc8 Qh4 58.Rb8 Qa4–+) 57...Qa4 58.R8c5 (58.h5 Qb5 59.Ke3 Qb6 60.R2c5 a4 61.hg6 hg6–+) 58...Qg4 59.Kd2 (59.Kf2 d4 60.R2c4 Qh4 61.Kg2–+) 59...d4 60.b6 (60.Rg5 Qf4 61.Kd3 Qe3 (61...Qh4?! 62.Re5–+) 62.Kc4 d3–+) 60...Qf4 61.Kd3 Qe3 62.Kc4 d3 63.Rc3 (63.Ra2 d2 64.Rd2 Qd2 65.Rb5–+) 63...Qe4 64.Kb5 d2 65.Rc1 Qe2 66.Kc6 Qf3 67.Kb5 dc1Q 68.Rc1 a4! 69.Rc7 (69.Ka4 Qf4 Double attack (69...Qf4 Decoy)) 69...a3 70.Ra7 Qd5 71.Kb4 a2 72.Kc3 Qc6 73.Kd3 Qb6 (73...Qb6 74.Ra2 Qb3 75.Kd4 Qa2–+) 0–1. Deep Shredder 12 64_bit – Komodo 2?01 64_bit, CCRL, 2011.

8.c4 c6 9.Be2 Nh6 10.c5 Qc7 11.e4 (11.0–0 Nf7=) 11...d4+= 12.Nf1 Nf7 13.Ng3 h5 (better is 13...a5!?+=) 14.Nh4+= g5 (14...Rh7 15.Bh5 Nf8 16.Qa4+=) 15.Ng6+/– h4 (15...Rh7!? 16.Ne7 Ke7 17.Bh5 Rah8+/–) 16.Nf5 Bf5 17.ef5 (better is 17.Nh8 Nh8 18.ef5+–) 17...Rh6 18.Ne7 Ke7 19.Qb3 Nf8 20.a4 White prepares b5 20...Re8 (20...Kd8 21.0–0=) 21.Bf3 Nd8 (21...Rh8 22.0–0+=) 22.0–0+= Kd7 23.b5 Kc8 24.Rae1 Nd7 (better is 24...h3!? 25.g4 Qd7+/–) 25.Bd4+– ed4? (better is 25...Nf8+–) 26.Re8 Nc5 (26...Ne5 27.Be4+–) 27.Qc4 Qd6 (27...cb5 28.Rd8! Qd8 29.Qc5 Kb8 30.Qb5+–) 28.Rc1 (better is 28.Rd8 Kd8 29.Qg8 Kc7 30.Qg7 Kc8 31.Qh6 Nd3 32.bc6 bc6 33.Rb1+–) 28...Kd7 (28...g4 29.Bg4 (worse is 29.Qc5 Qc5 30.Rc5 gf3+–) 29...b6 30.bc6+–) 29.Rd8! Kd8 Deflection from c6 30.Qg8 (worse is 30.Qc5 Qc5 31.Rc5 cb5 32.Rd5 Kc7 33.Rb5 b6+–) 30...Kc7 31.Qg7 (better is 31.bc6 bc6 32.Qg7 Qd7 33.Qh6 Qe7+–) 31...Kb6 (31...Qd7 32.Qh6 Nd3 33.bc6 Qe7+–) 32.bc6 bc6 (32...Rh8 33.Qh8 bc6 34.Qa8+–) 33.Qh6 (33.Rb1 Ka6 34.Qf7 h3 35.Qc4 Ka5 36.Rb5 Ka6 37.Rc5 Kb7 38.Rb5 Kc7 39.Qf7 Kd8 40.Qg8 Ke7 41.Rb7 Qc7 42.Qg7 Ke8 43.Qc7 hg2 44.Qe7) 33...Qf4 (33...a6 34.Qh8+–) 34.Rb1 (better is 34.a5 Ka6 35.Rc5+–) 34...Nb3 (34...Kc7 35.Qf6 Qd6 36.Qg5 h3+–) 35.Qf6 Ka5 If Black now would get Qd2 in, he might survive 36.Qc6 Qb8 37.f6 g4 Black threatens to counter with Qb6 38.Bd1 h3 (38...g3 39.Qd5 Ka6 40.Bb3 gh2 41.Kh1 Qb4 42.Bc4 Kb6 43.Rb4 Kc7 44.Rb7 Kc8 45.Qd7) 39.Rb3 Qh2 (39...Qb3 40.Bb3 Kb4 41.Bd1 Ka3 42.Qc2 Kb4 43.Qc4 Ka5 44.Qb5) 40.Kh2 1–0. Mroz,Antoni – Emirski,Krzysztof, corr Poland, 1987.

7.Nbd2 Ne7

8.c4 a5 9.c5 Qc6 10.d4 +=.

8.c4 a5 9.c5 Qc6 10.Be2 =.

8.c4 b6 9.Be2 (9.d4 Rd8+=) 9...Ng6 10.Qc2 c5 11.b5 d4 12.a4 (12.0–0 Bf5+=) 12...Be7 13.0–0 0–0 (13...a6 14.Ra3=) 14.a5 ba5 15.Ra5 de3 16.fe3 Qc7 17.Rfa1 Rfb8 (17...Nb6 18.Bc3+/–) 18.Qa4 (18.Ne1 Nh4+/–) 18...Rb7 19.Ne1 (19.Ne1 Nb6 20.Qa3+/–) 1–0. Mroz,Antoni – Albien,Sigurd, corr Poland–Sweden, 1987.

8.c4 c6 9.Qc2 (9.d4 e4 10.Ng1 Nb6=) 9...g6 (9...b6 10.d4=) 10.Nb3 (10.Be2 Bg7=) 10...Bg7 (10...0–0–0 11.d4=) 11.Be2 0–0 (11...h6 12.0–0=) 12.c5 Qc7 13.h4 (13.0–0 Rad8=) 13...Bf7 (13...Bg4 14.Ne5 Be2 15.Nd7 Bd3 16.Qd3 Qd7 17.h5+=) 14.g4 (14.a4 Rfe8=) 14...Rad8 (14...Be6 15.g5=) 15.Nbd2 (15.g5 fg5 16.hg5 Be6=) 15...Be8 (15...Be6 16.h5=+) 16.Nf1 (16.g5 Bf7=) 16...f5 (16...b6 17.h5=) 17.Ng5 (17.gf5 Nf5 18.h5 gh5=) 17...Bf7 (17...Rf6!?=) 18.h5+= h6 (18...Nf6 19.hg6 hg6 20.gf5 Nf5 21.Nd2+=) 19.Nf7+/– Rf7 20.hg6 Ng6 21.gf5 (21.Ng3 Ne7+/–) 21...Rf5 22.Bg4 (22.Ng3 Rg5+=) 22...Rf6 (22...Rg5 23.Be6 Kh7 24.Nd2+=) 23.f3 (23.Ng3 Rdf8 24.Rh2 b5+/–) 23...Ndf8 (23...Ne7 24.Rh5+/–) 24.Qg2 (better is 24.Ng3!? Kh7 25.Nf5+/–) 24...d4+= 25.e4 (25.Qc2 de3 26.Ne3 Nf4+=) 25...Nf4= 26.Qc2 Qf7 (26...b6 27.Bc1=) 27.Ng3+= N8e6 28.Nf5 (28.Bc1 Rg6+=) 28...h5 29.Bh3 Nh3 (29...Ng5 30.Bg2+=) 30.Rh3 Rf5 31.ef5 Qf5 32.Rh2 Qf3=+ (33.Qb3 Qg3 34.Rf2 Rd5–/+) 0–1. Mroz,Antoni – Baluch,Wieslaw, corr 2. AMM Poland, 1994.

7.Nbd2 Nh6

8.c4 a5 9.Qa4 =.

8.c4 dc4 9.Nc4 White gets strong initiative 9...Qd5 (9...Qe7 10.Rc1=) 10.e4 +/–.

8.Be2 a5 9.b5 +=.

8.Be2 Be7 9.c4 dc4 10.dc4 (10.Nc4 Qa6=) 10...c5 11.b5 Nf7 12.Ne4 (12.Qc2 0–0–0=) 12...Qd1 13.Rd1 0–0–0 14.0–0 Nb6 15.Nfd2 Rd7 16.Nb3 Rd1 (worse is 16...Nc4 17.Rd7 Kd7 18.Nbc5 Bc5 19.Nc5 Ke7 20.Ne6 Nb2 21.Ng7+/–) 17.Rd1 Nc4 18.Nbc5 Nb2 19.Rb1 Bc4 (19...Bd5!? 20.Bg4 Kb8 21.Rb2 Rd8+=) 20.Bg4= (20.Rb2? Be2 21.Re2 f5–+) 20...Kb8 21.Rb2 Nh6 22.Be6 Be6 23.Ne6 Ba3 24.Rd2 Rc8 (24...f5 25.N4g5+=) 25.h3= Bb4 (25...f5 26.N4g5=) 26.Rd7+= Nf5 (26...f5 27.N4g5 g6 28.Rh7=) 27.g4 Ne7 28.Ng7 a5 (28...Ng8 29.Ne6+/–) 29.ba6+– ba6 30.Nf6 Rc7 (30...h6 31.f4+–) 31.Rd8 (31.Rc7 Kc7 32.Nh7 a5 33.Ne6 Kd6–+) 31...Kb7+/– 32.Nge8 (32.Nh7?! Ng6 33.Rg8 Ne7=) 32...Rc1 33.Kg2 a5 34.Nd5 Nd5 35.Rd5 Bc3 (better is 35...Ka6 36.Rd7 h6+/–) 36.f4 (better is 36.Rd7!? Kb6 37.Rh7+–) 36...ef4 37.ef4 a4 38.Rd7 Kb6 39.Rd6 (worse is 39.Rh7 a3 40.Rh6 Ka7+=) 39...Kb7 40.Rd7 Kb6 41.Rd6 Ka5 42.Nc7 a3 43.Ra6 Kb4 44.g5 (44.Kf3!?+=) 44...Kb3 (44...Rc2 45.Kf3 a2 46.Nd5 Kb3 47.Nf6–+) 45.Nb5 (45.Ne6!? Rc2 46.Kf3–/+) 45...a2 46.Nc3 Rc3 47.f5 Rc5 48.h4? (better is 48.f6 Rg5 49.Kh2–+) 48...Rf5 49.Kg3 Rf1 50.Kg4 (50.Ra2 Ka2 51.Kg4 Kb3–+) 50...a1Q 51.Ra1 Ra1 52.h5 (52.Kf5 Rf1 53.Kg4 Kc4–+) 52...Kc4 53.Kf5 Rh1 54.h6 Kd5 55.Kf6 Ke4 (55...Ke4 56.Kg7 Kf5 57.Kh7 Kg5–+) 0–1. Roth,Norbert – Frieser,Klaus, Bayern–chB, 1986.

8.c4 c6

9.Be2 Be7 10.0–0 =.

9.Be2 Nf7

10.0–0 Be7 11.cd5 (11.Qc2 0–0 12.cd5 cd5 13.Rac1 Nb6 14.Nb3 Rac8 15.Nc5 Nd7 16.Qb3 Nc5; 11.h3 0–0 12.Qc2 a5 13.Bc3 ab4 14.ab4 Qc7 15.Nb3 b6 16.Rfc1 Nd6) 11...cd5 12.Rc1 0–0 13.Qa4 Nb6 14.Qa5 Bd7 15.e4 Na4 16.Ba1 b5.

10.Qa4 Be7 A) 11.Qc2 a5 (11...0–0 12.0–0 a5 13.c5 Qc7 14.Rfc1 Ra7 15.h3 Rfa8 16.Qb3 ab4; 11...Ng5 12.0–0 0–0 13.cd5 cd5 14.Rac1 Nf3 15.Nf3 Nb6 16.d4 Rac8) 12.c5 Qc7 13.0–0 0–0 14.Bc3 ab4 15.ab4 b6 16.cb6 Nb6; B) 11.0–0 0–0 12.h4 a5 13.c5 Qc7 14.Qc2 Nh6 15.Nb3 ab4 16.ab4 Ng4; C) 11.h4 0–0 12.0–0 a5 13.c5 Qc7 14.Qc2 Nh6 15.Rfc1 Ng4 16.Nb3 ab4; D) 11.Qb3 Qc7 (11...0–0 12.0–0 Qc7 13.cd5 Bd5 14.Qc2 a5 15.e4 Be6 16.d4 ab4; 11...a5 12.0–0 0–0 13.Bc3 Qc7 14.ba5 Nc5 15.Qc2 Qd7 16.h3 Nd6; 11...Rc8 12.0–0 0–0 13.Bc3 c5 14.h3 d4 15.Bb2 de3 16.fe3 f5; 11...b6 12.h3 0–0 13.0–0 a5 14.Bc3 Ng5 15.Ng5 fg5 16.Nf3 g4; 11...Qb8 12.0–0 0–0 13.cd5 cd5 14.Rfc1 Qd6 15.Qc2 Nb6 16.Nb3 Rac8) 12.0–0 0–0 13.h3 a5 14.Rfc1 Rfc8 15.Bc3 ab4 16.ab4 Nd6; E) 11.cd5 cd5 (11...Nb6 12.Qa5 Qd5 13.Qd5 cd5 14.Rc1 a5 15.ba5 Na4 16.Ba1 Ra5) 12.0–0 0–0 13.Rfc1 Nb6 14.Qa5 Bd7 15.Bd1 Nd8 16.Bb3 Nc6.

10.Qb3 Be7 A) 11.0–0 0–0 12.h3 Qc7 13.Rfc1 Nb6 14.a4 dc4 15.dc4 a5 16.ba5 Nd7; B) 11.h4 0–0 (11...Qc7 12.0–0 0–0 13.cd5 Bd5 14.Qc2 a5 15.b5 Nd6 16.e4 Bf7; 11...Nh6 12.0–0 0–0 13.Qc3 Rac8 14.Rac1 Qb8 15.Qb3 Ng4 16.Rfe1 b6; 11...c5 12.0–0 0–0 13.Bc3 d4 14.ed4 cd4 15.Ne4 Qb6 16.Bd2 Qc6; 11...b6 12.cd5 cd5 13.0–0 0–0 14.Rfc1 Rfc8 15.Qd1 a5 16.Rc3 Nh6; 11...a5 12.0–0 0–0 13.c5 Qc7 14.Bc3 Rfe8 15.Qc2 Nh6 16.Nb3 ab4) 12.0–0 Qc7 13.h5 a5 14.Rfc1 Rfc8 15.Nh4 dc4 16.dc4 Rd8; C) 11.h3 a5 (11...0–0 12.0–0 Qc7 13.Rfc1 Nb6 14.c5 Nd7 15.Qc3 Rab8 16.e4 Ng5; 11...Qc7 12.0–0 0–0 13.Rfc1 Nb6 14.a4 dc4 15.dc4 Nd7 16.a5 c5; 11...Ng5 12.Ng5 fg5 13.Bh5 g6 14.Be2 0–0 15.0–0 h5 16.e4 g4; 11...a6 12.0–0 0–0 13.e4 a5 14.d4 ab4 15.ed5 cd5 16.c5 Qc6; 11...b6 12.cd5 Qd5 13.Qc2 0–0 14.e4 Qd6 15.Nc4 Qc7 16.d4 a5) 12.0–0 0–0 13.Bc3 a4 14.Qc2 Qc7 15.Bb2 Qc8 16.e4 f5; D) 11.Bc3 0–0 (11...Qc7 12.0–0 0–0 13.h3 Rfe8 14.a4 dc4 15.dc4 a5 16.ba5 Nc5; 11...Ng5 12.h4 Nf3 13.Bf3 f5 14.c5 Qc7 15.h5 0–0 16.e4 Nf6; 11...b6 12.h4 0–0 13.0–0 Nh6 14.a4 Ng4 15.a5 f5 16.ab6 ab6; 11...a5 12.0–0 0–0 13.h3 a4 14.Qc2 Qc7 15.Bb2 Rfc8 16.Rac1 Qd8; 11...Rc8 12.0–0 0–0 13.h3 b6 14.Rac1 Qc7 15.cd5 cd5 16.Rfe1 Nd6) 12.0–0 Qc7 13.cd5 Bd5 14.Qc2 c5 15.Rfc1 Rac8 16.bc5 Bc5; E) 11.c5 Qc7 (11...Qb8 12.0–0 0–0 13.d4 Qc7 14.e4 b6 15.cb6 ab6 16.b5 Rfc8) 12.0–0 0–0 13.e4 b6 14.cb6 ab6 15.d4 Bd6 16.h3 b5; F) 11.g3 0–0 (11...a5 12.0–0 0–0 13.Bc3 Ng5 14.ba5 Nc5 15.Qc2 Nh3 16.Kh1 Qd7; 11...Qc7 12.0–0 0–0 13.Qc2 a5 14.cd5 Bd5 15.d4 ab4 16.ab4 Bb4) 12.0–0 Ng5 13.d4 Nh3 14.Kh1 Ng5 15.Kg1 Nh3 16.Kh1 Ng5; G) 11.Qc2 a5 (11...0–0 12.0–0 a5 13.c5 Qc7 14.Nb3 ab4 15.ab4 b6 16.h3 Rfb8; 11...Ng5 12.h3 Nf3 13.Nf3 0–0 14.0–0 a5 15.Bc3 ab4 16.ab4 Qc7) 12.c5 Qc7 13.0–0 0–0 14.Nb3 ab4 15.ab4 b6 16.h3 Rfb8.

10.Qc2 Qb8 11.cd5 cd5 12.0–0 (12.Rc1 Be7 13.0–0 0–0 14.Qb3 Qd6 15.Qa4 Nb6 16.Qa5 Bd7) 12...Bd6 (12...Be7 13.Rac1 0–0 14.Qa4 Nd6 15.Qb3 Qe8 16.Rfe1 Nb6) 13.Rfc1 (13.d4 0–0 14.e4 (14.de5 fe5 15.Qb3 Qe8 16.Rac1 Qe7) 14...a5= (14...de4 15.Ne4 Rc8 16.Qb1 ed4) 15.Qb3 a4 16.Qd3 Rc8; 13.Rac1 0–0 14.e4 a5 15.Qb3 a4 16.Qa2 Nb6) 13...0–0 14.Nf1 (14.Qb3 Qe8 15.Qc2 Nb6 16.Nb3 Na4) 14...Nb6 15.Ng3 (15.d4 Rc8 (15...Qe8 16.de5 Ne5) 16.Qb3 Nc4=; 15.N1d2 Qc8 16.Nb3 Qc2) 15...Qe8 16.Rab1 (16.Qd2 Qd7) 16...Qd7 (16...Na4+=) 17.Qd2 Na4 18.Ba1 a5 (18...Rac8 19.e4+=) 19.Bd1 (better is 19.ba5!? Ba3 20.Rc2=) 19...ab4+= 20.ab4 Nb6 21.Bb3 Ra3 22.Nh4 (22.Ne1 Rfa8+=) 22...Rfa8–/+ 23.f4 Qb5 24.f5 Bd7 25.Bc3 Na4 26.Ba1 (26.Ne2 Nc3 27.Nc3 Bb4–/+) 26...Bb4–+ 27.Qd1 Bd2! 28.Qd2 Rb3 29.Rb3 Qb3 30.Nh5? (30.d4 Nb6 31.Qe1 Nc4–+) 30...Nd6 (30...Nc5 31.d4 Nd3 32.Rf1–+) 31.Rf1? (better is 31.d4 Nc4 32.Qe1–+) 31...Be8 32.Be5 fe5 33.Ng7 Kg7 34.f6 Kh8 35.Qf2 Bf7 36.Qg3 Rg8 37.Qe5 Qb6 38.d4 Nc3 39.Nf3 Nc4 40.Qe7 Qe6 41.Qb7 Qf6 42.Nd2 Qg6 43.g3 Nd2 44.Rf7 Qb1 45.Qb1 Ncb1 46.Rc7 Ne4 47.Kg2 Nbc3 48.Kf3 Rf8 49.Kg4 Nd1 50.Kh5 Ne3 51.h3 Ng3 52.Kh6 Ngf5 53.Kg5–+ Nd4 (53...Nd4 54.Kh5 Rg8 55.Rc3 Ng2 56.Re3 Nf4 57.Kh4 Nf5#) 0–1. Saradjen,Janko (2200) – Mohr,Georg (2470), ch–SLO, Bled SLO, 2003.

10.Qc2 Be7 A) 11.h4 a5 (11...0–0 12.0–0 a5 13.Bc3 ab4 14.ab4 Qc7 15.Rfc1 Nd6 16.h5 b5) 12.ba5 Ra5 13.Bc3 Ra3 14.Ra3 Qa3 15.0–0 0–0 16.Rb1 b5; B) 11.h3 0–0 (11...a5 12.0–0 0–0 13.Bc3 ab4 14.ab4 Ng5 15.Rfc1 Nf3 16.Nf3 Rfc8; 11...Ng5 12.Ng5 fg5 13.cd5 cd5 14.0–0 a5 15.ba5 0–0 16.Nf3 Bf6) 12.0–0 a5 13.Bc3 ab4 14.ab4 Ng5 15.Rfc1 Nf3 16.Bf3 f5; C) 11.cd5 cd5 12.0–0 0–0 13.Rac1 Nb6 14.Qc7 Qc7 15.Rc7 Bd6 16.Rc2 Na4; D) 11.0–0 0–0 (11...b6 12.cd5 cd5 13.Rfc1 0–0 14.Qa4 Rfc8 15.Rc8 Rc8 16.Qa7 Rc2) 12.h4 a5 13.Bc3 ab4 14.ab4 Qc7 15.Ra2 Ra2 16.Qa2 Nd6.

10.c5 Qc7 11.Nh4 Nh6 (11...g5 12.Nhf3 Be7 13.h3 b6 14.cb6 ab6 15.0–0 Nd6 16.a4 c5; 11...g6 12.0–0 Be7 13.Qc2 0–0 14.Nb3 Kg7 15.Bc3 f5 16.Nf3 Rfe8; 11...f5 12.e4 fe4 13.de4 g5 14.Nf5 Nf6 15.Qc2 0–0–0 16.f3 Nh6) 12.0–0 Be7 13.Qc2 0–0 14.h3 b6 15.d4 bc5 16.dc5 a5.

10.cd5 cd5 A) 11.Qa4 Be7 (11...a6 12.0–0 Be7 13.Rfc1 0–0 14.Qc2 Nd8 15.Nb3 Nc6 16.d4 e4) 12.Rc1 0–0 13.0–0 Nb6 14.Qa5 Bd7 15.e4 Na4 16.Ba1 b5; B) 11.Rc1 Be7 12.0–0 0–0 13.Qc2 Nb6 14.Qc7 Qc7 15.Rc7 Bd6 16.Rc2 Na4; C) 11.h4 Nb6 (11...Be7 12.Qa4 0–0 13.0–0 Nb6 14.Qb3 Nh6 15.Rfc1 Rac8 16.Rc8 Rc8; 11...Qb6 12.0–0 Be7 13.Qb3 0–0 14.h5 a5 15.ba5 Ra5 16.d4 Qb3) 12.0–0 Be7 13.Nb1 0–0 14.Nc3 a5 15.b5 Rfc8 16.Qd2 Qd7; D) 11.Qb3 Nb6 (11...Be7 12.0–0 0–0 13.Rfc1 Nb6 14.h3 Rac8 15.d4 e4 16.Nh2 Nc4; 11...Rc8 12.0–0 Be7 13.Qa4 0–0 14.Rac1 Qb6 15.e4 de4 16.de4 Nd6; 11...Qb6 12.0–0 Be7 13.Rac1 0–0 14.Rfd1 Rac8 15.h3 Rfd8 16.Rc8 Rc8) 12.0–0 Be7 13.Rac1 0–0 14.Nh4 Rac8 15.d4 Qd7 16.h3 e4; E) 11.Qc2 Be7 (11...Qb6 12.0–0 Bd6 13.e4 0–0 14.Rfc1 Qa6 15.ed5 Bd5 16.Ne4 Be7; 11...Nb6 12.Nb3 Na4 13.d4 e4 14.Nfd2 Qc6 15.Qc6 bc6 16.0–0–0 Rb8) 12.0–0 0–0 13.Rfc1 Nb6 14.b5 Rac8 15.Qd1 Nh6 16.Nh4 Qd7; F) 11.g3 Be7 (11...Qb6 12.0–0 Be7 13.Qa4 0–0 14.e4 de4 15.de4 Rac8 16.Rac1 Rc1; 11...Nb6 12.d4 e4 13.Nh4 Be7 14.Ng2 0–0 15.Nf4 Rac8 16.0–0 Ng5) 12.Qa4 0–0 13.0–0 Nb6 14.Qb3 Qd7 15.Rac1 Rfc8 16.Rc8 Rc8; G) 11.0–0 Be7 12.Qa4 0–0 13.Rfc1 Nb6 14.Qa5 Bd7 15.Bd1 Nd8 16.Bb3 Nc6.

10.h3 Be7 A) 11.Qc2 0–0 (11...a5 12.ba5 Ra5 13.Bc3 Ra3 14.Ra3 Qa3 15.0–0 0–0 16.Ra1 Qd6; 11...Ng5 12.Ng5 fg5 13.cd5 cd5 14.0–0 0–0 15.Rfc1 Nb6 16.d4 e4) 12.0–0 a5 13.Bc3 ab4 14.ab4 Qc7 15.h4 Nd6 16.h5 b5; B) 11.Qb3 a5 (11...Qc7 12.0–0 0–0 13.Rfc1 Rfc8 14.Bc3 a6 15.Qb2 Nb6 16.Qc2 Nd7; 11...0–0 12.0–0 Qc7 13.Rfc1 Nb6 14.Rd1 a5 15.c5 Nd7 16.Rdc1 Ng5; 11...Rc8 12.c5 Qc7 13.0–0 0–0 14.Bc3 b6 15.cb6 ab6 16.Rab1 c5; 11...c5 12.Qc2 0–0 13.0–0 Rac8 14.Rfc1 Qc6 15.cd5 Qd5 16.d4 ed4; 11...a6 12.0–0 0–0 13.e4 a5 14.d4 ab4 15.ed5 cd5 16.c5 Qc6) 12.0–0 0–0 13.Bc3 Ng5 14.Ng5 fg5 15.Nf3 Bf6 16.e4 d4; C) 11.Bc3 0–0 (11...Qc7 12.0–0 0–0 13.Qb3 Rfd8 14.cd5 Bd5 15.Qc2 c5 16.Rfc1 Rac8; 11...b6 12.0–0 0–0 13.Qc2 Ng5 14.Ng5 fg5 15.Nf3 Bf6 16.e4 Rac8; 11...a6 12.0–0 0–0 13.c5 Qc7 14.Nb3 b6 15.cb6 Qb6 16.d4 e4; 11...f5 12.0–0 0–0 13.Qc2 Bf6 14.c5 Qc7 15.Rab1 b6 16.a4 Rab8) 12.0–0 Qc7 13.Qb3 Nd6 14.c5 Nf7 15.Rab1 b6 16.d4 Bf5; D) 11.c5 Qc7 (11...Qb8 12.Qb3 0–0 13.0–0 Qc7 14.Rfc1 b6 15.cb6 ab6 16.a4 c5) 12.0–0 0–0 13.e4 f5 14.ed5 Bd5 15.Nc4 Rfd8 16.Qc2 b6; E) 11.Qa4 0–0 (11...a5 12.0–0 0–0 13.c5 Qc7 14.Qc2 b6 15.cb6 Qb6 16.ba5 Ra5) 12.0–0 Ng5 13.Ng5 fg5 14.cd5 Qd5 15.Qc2 Rac8 16.Nc4 c5; F) 11.Qc1 0–0 (11...a5 12.c5 Qc7 13.0–0 0–0 14.Qc2 Ra7 15.Nb3 ab4 16.ab4 Rfa8; 11...Ng5 12.Qc2 0–0 13.0–0 a5 14.Bc3 ab4 15.ab4 Nf3 16.Bf3 f5; 11...b6 12.0–0 0–0 13.Qc2 a5 14.Bc3 ab4 15.ab4 Qc7 16.cd5 cd5) 12.0–0 a5 13.c5 Qc7 14.Qc2 Ra7 15.e4 Rfa8 16.ed5 cd5; G) 11.0–0 0–0 12.Qb3 a5 13.Bc3 Ng5 14.Ng5 fg5 15.Nf3 Bf6 16.Qc2 ab4.

10.h4 Be7 A) 11.0–0 0–0 12.Qa4 a5 13.c5 Qc7 14.Qc2 Nh6 15.Nb3 ab4 16.ab4 Ng4; B) 11.Qb3 0–0 (11...Qc7 12.0–0 0–0 13.cd5 Bd5 14.Qc2 a5 15.e4 Be6 16.Bc3 ab4; 11...Nh6 12.0–0 0–0 13.Qc3 Rac8 14.Rfc1 Qb8 15.Qb3 Ng4 16.Bc3 Qd6) 12.0–0 Nh6 13.Qc3 Rac8 14.Rac1 Qb8 15.Qb3 Ng4 16.Bc3 Qc7; C) 11.Qa4 0–0 (11...a5 12.cd5 Nb6 13.Qc2 cd5 14.ba5 Ra5 15.Nb3 Rb5 16.d4 Nc4; 11...Nh6 12.0–0 0–0 13.Qa5 Ng4 14.cd5 Qd5 15.Nc4 Qa5 16.Na5 Rab8; 11...a6 12.Qc2 0–0 13.0–0 a5 14.Bc3 ab4 15.ab4 Qc7 16.Rfc1 Nd6) 12.0–0 a5 13.ba5 Nc5 14.Qc2 Qd7 15.Bc3 Nd6 16.Bb4 Na6; D) 11.c5 Qc7 12.0–0 0–0 13.Qc2 Nh6 14.Rfe1 Ng4 15.e4 Rad8 16.Qd1 de4; E) 11.Qc2 a5 (11...0–0 12.0–0 a5 13.Bc3 ab4 14.ab4 Qc7 15.Rfe1 b5 16.c5 Nh6; 11...Qb8 12.0–0 0–0 13.Rfc1 Rc8 14.cd5 cd5 15.Qa4 Nb6 16.Qa5 Nd6) 12.0–0 0–0 13.Bc3 ab4 14.ab4 Qc7 15.Rfc1 Nd6 16.h5 b5; F) 11.Nb3 dc4 12.dc4 Qd1 13.Rd1 0–0–0 14.Nbd2 c5 15.Bc3 Nb6 16.bc5 Bc5; G) 11.Bc3 Nh6 12.0–0 0–0 13.Qb3 Ng4 14.a4 a5 15.ba5 Nc5 16.Qc2 Qd7.

10.Nh4 A) 10...Be7 11.c5 Qc7 12.Bg4 Bg4 13.Qg4 g6 14.0–0 f5 15.Qg3 0–0–0 16.Nhf3 Kb8; B) 10...g6 B1) 11.c5 Qe7 (11...Qc7 12.0–0 Bg7 13.Rc1 0–0 14.Nb3 f5 15.Na5 Nf6 16.Qd2 Bh6) 12.0–0 Bh6 13.Nb3 0–0 14.Qc2 b6 15.d4 Rac8 16.Ba6 Rc7; B2) 11.0–0 Bh6 (11...Bg7 12.f4 f5 13.c5 Qc7 14.e4 0–0–0 15.Qc2 Rhe8 16.ef5 gf5; 11...Be7 12.f4 f5 13.Qe1 0–0 14.c5 Qc7 15.Qg3 Bh4 16.Qh4 Rfe8) 12.Qc2 0–0 13.Nhf3 Qe7 14.h3 Bg7 15.Rac1 Rfd8 16.cd5 cd5; C) 10...g5 11.Nhf3 Bg7 (11...g4 12.Nh4 f5 13.cd5 cd5 14.e4 fe4 15.de4 0–0–0 16.Nf5 Qb6; 11...0–0–0 12.0–0 Kb8 13.cd5 cd5 14.Rc1 Bg7 15.Qa4 Rc8 16.Rfe1 g4; 11...Be7 12.h3 0–0 13.0–0 a5 14.Bc3 ab4 15.ab4 Qc7 16.Qc2 Nd6; 11...Bh6 12.h3 0–0 13.0–0 Qe7 14.e4 Nd6 15.Qc2 a5 16.c5 Nb5) 12.0–0 0–0 13.h3 Qe7 14.Qc2 Rfc8 15.Rfc1 Re8 16.e4 de4; D) 10...f5 11.e4 Nh6 (11...de4 12.de4 fe4 13.Ne4 Qd1 14.Rd1 a5 15.b5 Nc5 16.Nc5 Bc5; 11...fe4 12.de4 de4 13.Ne4 Qd1 14.Rd1 a5 15.b5 Nc5 16.Nc5 Bc5) 12.ed5 cd5 13.0–0 Be7 14.Nhf3 0–0 15.h3 Nf7 16.c5 Qc7; E) 10...Nh6 11.0–0 (11.Bh5 g6 12.Bf3 Bg7 13.0–0 0–0 14.Be2 a5 15.Qb3 Nf7 16.h3 Qe7; 11.Rc1 Be7 12.cd5 cd5 13.Qc2 Nb6 14.Nb3 Na4 15.Nd4 Bd7 16.Nhf5 Nf5) 11...Be7 12.Bh5 g6 13.Be2 0–0 14.Qc2 Kg7 15.h3 a5 16.d4 Nf5.

6.d3 Ne7

7.Nbd2 g5 8.c4 c6 (8...g4 9.Nh4 Nd7 10.Be2 Rg8 11.0–0 0–0–0 12.c5 Qc6 13.d4 Bf7 14.Bg4) 9.Nb3 (9.Be2 Nd7 10.0–0 0–0–0 11.e4 g4 12.ed5 cd5 13.c5 Qc7 14.Nh4) 9...Nd7 10.Be2 (10.c5 Qc7 11.Be2 0–0–0 12.0–0 Bg7 13.d4 e4 14.Nfd2) 10...Bg7 (10...0–0–0 11.c5 Qc7 12.0–0 Kb8 13.d4 e4 14.Nfd2) 11.Nfd2 (11.0–0 0–0–0 12.Qc2 Qc7 13.Nfd2 Kb8 14.d4) 11...0–0 (11...0–0–0 12.0–0 Kb8 13.Qc2 f5 14.d4) 12.Qc2 b6 13.Rc1 (13.Bc3 Nf5 14.0–0) 13...Rac8 (13...a5 14.ba5) 14.0–0 f5 15.f4 gf4 16.ef4 Ng6 17.fe5 Nde5 18.Nd4 Bd7 19.c5 Qe7 20.Rce1 Bh6 (20...Rce8 21.Bd1+=) 21.Bd1 bc5 22.bc5 (22.N4b3!? cb4 23.Be5 Ne5 24.d4+/–) 22...Bd2= 23.Qd2 Qc5 24.Kh1 Qd6 25.Qh6 Nf7?? (better is 25...Rf7 26.Nf5 Bf5 27.Be5 Qf8 (27...Qa3? 28.Rf5 Qf8 29.Qf8 Rcf8 30.Rf7 Rf7 31.Bd4+–) 28.Qf8 Rff8= (worse is 28...Nf8 29.d4+=)) 26.Nf5 (26.Nf5 Qh2 27.Kh2 Nh6 28.Nh6) 1–0. Djosic,S (2255) – Tadic,Br (2480), Belgrade Premier League, Belgrade SRB, 2008.

7.d4 e4 8.Nfd2 f5 9.c4 Qd7 10.Nc3 a6 =.

7.d4 Ng6 8.Nc3 c6 9.e4 Be7 10.h3 (better is 10.ed5!? Bd5 11.Nd5 cd5 12.de5 fe5 13.c4+=) 10...0–0+= 11.ed5 Bd5 12.Bd3 ed4 (better is 12...Bf3!? 13.Qf3 ed4+=) 13.Nd5+= Qd5 14.Bd4 Re8 15.h4?? (better is 15.Bg6 hg6 16.0–0+=) 15...Bb4–/+ 16.Kf1 Bc5 17.Bc5 Qc5 18.h5 Nf4 19.Qd2 Nd3 (19...Nd3 20.Qd3 b5–/+; worse is 19...Nh5 20.g4 Ng3 21.fg3+/–) 0–1. vbj (2065) – douglasricardo (2245), net–chess.com, 2011.

7.Be2 Ng6 8.Nbd2 Be7 9.c4 0–0 10.h4 dc4 11.Nc4 Bc4 (11...Qd7!?=) 12.dc4+/– e4 (12...Qe6 13.h5 Nh8 14.Qc2+/–) 13.Qb3 (13.h5!? ef3 A) 14.hg6?! fe2 (worse is 14...fg2 15.Rg1+/–) 15.Qd6 A1) worse is 15...cd6 16.Rh7 (16.gh7?! Kh8=) 16...Rc8 17.Ke2+–; A2) 15...Bd6 16.gh7 Kh8=; B) 14.Bf3+–) 13...c5+= 14.Nd4 Qd7 15.h5 Ne5 (15...cd4? 16.hg6 h6 17.ed4+–) 16.Nb5 (16.bc5 Bc5 17.Rd1 Na6+=) 16...Nd3= 17.Bd3 ed3 (worse is 17...Qd3 18.Qd3 ed3 19.Nc7+/–) 18.0–0–0 cb4 (18...Rd8 19.Qd3 Qd3 20.Rd3 Rd3 21.Nc7 cb4 22.ab4–/+) 19.ab4 Nc6 20.c5 Kh8 21.h6 g6 22.Nd6 Bd6 23.Rd3 Qf5 (better is 23...Rac8!? 24.Rd6 Qd6 25.cd6 Nd4 26.Qc3 Ne2 27.Kc2 Nc3 28.Bc3 Rfd8=) 24.Rd6+– (worse is 24.cd6 Nb4 (24...Qf2 25.Qe6 Rac8 26.Kb1 Nb4 27.Qd7+–) 25.Rc3 a5–/+) 24...a5?? (better is 24...Qf2 25.Qe6 Ne5+–) 25.Rf6! Qf6 A pinning theme (25...Rf6 Decoy theme: f6 26.Qf7 A double attack) 26.Bf6 Rf6 27.Qa4 (better is 27.ba5!? Na5 28.Qc3 Raf8 29.Qa5 R6f7+–) 27...Nb4 (27...Kg8 28.Qa2 Rf7 29.Rh4+–) 28.Qa1 (better is 28.Qd7!? Rg8 29.Rd1 Na2 30.Kb2 Nb4+–) 28...Raf8 29.Rd1 (worse is 29.Qa5 Nd3 30.Kb1 Nf2+–) 29...Kg8 30.Rd7 R8f7 (30...R6f7 31.Rf7 Rf7 32.Qa5 Nd3 33.Kb1+–) 31.Rf7 (31.Rd8 Rf8 32.Qf6 Nd3 33.Kd2 Rd8 34.Qg7) 31...Rf7 (31...Kf7 32.Qa5 Na6+–) 32.Qa5 Nd3 33.Kc2 Nf2 (33...Rd7 34.Qa2 Kf8 35.Qe6 Ne1 36.Kc3+–) 34.Qa8 Rf8 35.Qb7 Rf7 36.c6 Ne4 37.Qc8 Rf8 38.Qe6 1–0. Mroz,Antoni – Kurowski,H, corr Poland, 1986.

7.Nbd2 a5

8.b5 c6 9.c4 cb5 10.cd5 Bd5.

8.b5 Nd7 9.c4 Kf7 10.d4 ed4 11.cd5 Nd5 12.Ne4 Qe7 13.Nd4 Kg8 14.Ne6.

8.b5 Kf7 9.Be2 Nd7 10.0–0 c6 11.bc6 Qc6 12.a4 Ng6 13.h4 Bd6 14.c4.

6.d4 Nd7

7.Nc3 c6 8.h3 e4 9.Nd2 f5 10.g3 (10.Ne2!?=) 10...Ngf6+= 11.Bg2 Qc7 12.Ne2 Bd6 13.c3 0–0 14.Nf4 Bf7 15.h4 Ng4 16.Qe2 Kh8 17.c4 Bf4 18.gf4 dc4 19.Nc4 Bc4 20.Qc4 Nb6 21.Qb3 Nd5 22.Bh3 h5 23.Rc1 Qb6 24.Bg4 fg4 25.Rc5 Rf5 26.Qc2 Re8 27.Bc1 a6 28.Bd2 g6 29.Qc4 Kg7 30.a4 Qd8 31.Qc2 Ne7 32.Qe4 (better is 32.a5!?=) 32...Nd5–/+ 33.Qc2 Rf4 34.b5 cb5 35.ab5 b6?? (35...g3 36.Rf1 g2–+) 36.Rc6= Rfe4 37.ba6 R4e6 38.Re6 Re6 39.0–0 (39.Qb3!?+/–) 39...Qh4= 40.Qc8 g3 41.fg3 Qg3 42.Kh1 Qh3 43.Kg1 Qg4 44.Kh1 Qe4 45.Kh2 Re8 46.Qb7 Re7 47.Qb8 Qh4 48.Kg2 Qe4 (worse is 48...Ne3 49.Be3 Qg4 50.Kf2+/–) 49.Kh2 Qh4 ½–½. Navratil,Josef (2035) – Majer,Jiri Sr (2120), Bohemia South–chT, 2004.

7.c4 dc4 8.Nc3 a5 9.Qa4 Kf7 (9...c6 10.b5 Nb6 11.Qc2 cb5 12.de5 fe5 13.Nb5+=) 10.d5 (10.Ne4 Qe7 11.de5 Nb6+=) 10...Bg4 (10...Bd5!? 11.Nd5 Qd5 12.Bc4 Qc4 13.Qd7 Ne7 14.Be5 ab4 15.ab4 Ra1 16.Ba1 b5–/+) 11.Nb5+= Qb6 12.Bc4 Bd6 13.Nd2 Ne7 14.Nd6 cd6 (14...Qd6? A) 15.ba5?! Nb6 16.Qb3 A1) 16...Nbd5? 17.e4+– (17.Qb7? Rhb8 18.Qa8 Ra8–+); A2) 16...Nc4 17.Qc4 Bd7+=; B) 15.Ne4 Qb6 16.d6 Ke8 17.de7 Ke7 18.b5+–) 15.Bc3 ab4 16.Qb4 Rhc8 17.Ne4 Nf5 (17...Qb4 18.Bb4 (worse is 18.ab4 Ra1 19.Ba1 Nf5–/+) 18...Rc4 19.Nd6 Kg6 20.Nc4 Nd5 21.Rb1+/–) 18.Bd3 Qb4 19.Bb4 (19.ab4?? Ra1 20.Ba1 Rc1 21.Kd2 Rh1–+) 19...Nb6 20.Kd2 (20.h3 Bh5 21.g4 (worse is 21.Nd6 Nd6 22.Bd6 Nd5+=) 21...Nd5 22.Rd1+/– (22.gf5?! Nb4 23.Nd6 Kf8 24.Nc8 Nd3 25.Kd2 Nf2=)) 20...Nd5+= 21.h3 (worse is 21.Nd6 Nd6 22.Bd6 Rd8–/+) 21...Nb4 22.ab4 d5 (better is 22...Bh5!? 23.g4 d5+/–) 23.Nc5 (23.hg4?! A) 23...de4? 24.Ra8 (24.gf5?! Ra1 25.Ra1 Rd8+=) 24...Ra8 25.Bc4 (25.gf5?! Rd8=) 25...Kg6 26.gf5 Kf5 27.Rh7+–; B) 23...Ra1 24.Ra1 de4 25.Be4 Nd6 26.Bd5 Kg6=) 23...Bh5? (better is 23...Ra1 24.Ra1 Bh3 25.gh3 e4+–) 24.Bf5 1–0. De Visser,A (1880) – Schroer,M (2105), HSG Open, Hilversum NED, 2010.

7.Be2 e4 8.Nfd2 f5 9.c4 c6 10.b5 (10.cd5 Bd5 11.Nc3 Ngf6=) 10...Ngf6 11.Nc3 Be7 12.a4 Qc7 13.a5 0–0 (13...dc4 14.Qa4=) 14.g3 (14.c5 cb5 15.Nb5 Qc6=) 14...c5 (14...dc4 15.Qa4+=) 15.cd5 Nd5 16.Nd5 (16.Bc4 N7f6=) 16...Bd5+= 17.Nb3 (17.0–0 Rac8+=) 17...Rfd8 (17...c4!? 18.Nc5 Rfc8–/+) 18.Qc2+= Rac8 19.Rc1 (19.Bc4 Nf8+=) 19...Kh8 (19...c4 20.Qc3 Nf6 21.Nd2–/+) 20.a6 (20.0–0 c4 21.Qc3 b6+=) 20...b6 (20...ba6!? 21.ba6 Qb6 22.Nc5 Nc5 23.dc5 Rc5–+ (23...Bc5?! 24.0–0+=)) 21.Ba3 Qb8 22.Qb2 (22.dc5 bc5 23.0–0 Ne5–/+) 22...Bf6 (22...Qd6 23.0–0–/+) 23.0–0+= Qd6 24.Bc4 Qe6 (24...Bc4 25.Rc4 Nf8 26.Rb1+=) 25.Bd5 (25.Qc2 cd4 26.Bd5 Qd5 27.Qc8 Qb3+=) 25...Qd5–/+ 26.Qc2 (26.Qb1 c4 27.Na1 Rc7+=) 26...c4 27.Nd2 c3 ½–½. Quabach,Juergen (1835) – Ritz,Thomas (2130), Passau op, 1999.

7.Be2 a5

8.ba5 e4 9.Nfd2 Ra5 (9...Qc6 10.c4+=) 10.Bc3 (10.c4 Qb6 11.Qc2 f5+=) 10...Ra8= 11.Bb4 Qb6 12.Bf8 Kf8 13.Nb3 Ne7 14.N1d2 Qd6 (14...Kf7 15.c4=) 15.Qc1 (15.c4 A) 15...Ra3? 16.c5 Ra1 17.Qa1 (17.cd6? Rd1 18.Bd1 cd6–+; worse is 17.Na1 Qc6+=) 17...Nc5 18.Nc5+–; B) 15...dc4 16.Nc4 Qc6=) 15...b6 16.c4 Nc6 (16...Kf7 17.f3 ef3 18.Bf3=) 17.c5 (17.0–0 Kf7+=) 17...bc5 18.dc5 Qe7 19.Bb5 (19.0–0 Kf7=) 19...Nde5 20.0–0 g6 (20...Kf7 21.Nd4 Na7 22.Be2=) 21.Nd4+= Bd7 22.Bc6 Bc6 23.N2b3 (23.f3 Kg7+=) 23...Ba4 24.Qb1 (24.Qc3 Kg7=) 24...Kg7+= 25.Qa2 Rhb8 26.Rfb1 Nc4 (better is 26...c6!?+=) 27.Nd2+= Nd2 28.Qd2 Qd7 (28...Rb1 29.Rb1 Bd7 30.c6+=) 29.Qc3 (29.Rb8 Rb8 30.Qa5 Bc6+/–) 29...Bc6 30.Rb4 Rb4 (30...Rd8+=) 31.Qb4 (31.ab4 Qe8+/–) 31...Ra4+= 32.Qb2 Rc4 33.Rc1 (worse is 33.Nc6 Qc6 34.Qb1 Qc5–/+) 33...Ba4 (better is 33...Ra4!?=) 34.Rc4+/– dc4 35.Qb4 Bb3 36.c6 Qf7 (36...Qe8 37.a4+/–) 37.a4 (37.Nb3?! cb3 38.Kf1 Qd5=) 37...Ba2 (37...Bd1 38.a5 c3 39.Qc3+–) 38.a5 c3 39.a6 (39.Qc3?! Bc4+–) 39...c2 (39...Qe8 40.Qa5 Qb8+–) 40.Nc2 Qe8 (40...Bd5 41.Qb7 Bc6 42.Qc6 Qa2+–) 41.Nd4 Bd5 42.Qb7 Qe7 43.a7 Qa3 44.h3 1–0. Plock,Joerg (1675) – Menkhaus,Wolf Dieter (1950), Landesliga Ost1, 2003.

8.de5 fe5 9.Nbd2 Ngf6 10.c4 dc4 =.

7.Be2 Be7

8.Qc1 a5 A) 9.c4 A1) 9...c6 10.ba5 (10.c5 Qc7 11.b5 Nh6 12.b6 Qb8 13.Nc3 0–0 14.0–0 Qe8 15.Qc2 Nf5 16.Rad1=) 10...e4 11.Nfd2 Nh6 12.Bc3 c5 13.cd5 Bd5 14.dc5 Nc5 15.Bb4 Qe5 16.Nc3+=; A2) 9...dc4 10.b5 (10.ba5 Ra5 11.Bc4 Bc4 12.Qc4 e4 13.Nfd2 f5 14.Nc3 Nb6 15.Qe2 Qe6 16.0–0+=) 10...c6 11.Bc4 Bc4 12.Qc4 e4 13.Nfd2 f5 14.Nc3 Ngf6 15.bc6 bc6 16.Na4=; B) 9.de5 B1) 9...fe5 10.0–0 (10.Nbd2 Ngf6 11.c4 ab4 12.ab4 Ra1 13.Qa1 Qb4 14.Ng5 Bg8 15.cd5 Bd5 16.e4=) 10...ab4 11.ab4 Ra1 12.Ba1 Ngf6 13.c4 Bg4 14.cd5 e4 15.Nd4 0–0 16.Bc4=; B2) 9...Ne5 10.ba5 (10.b5 Nh6 11.Nd4 0–0 12.Ne6 Qe6 13.0–0 Nc4 14.Nc3 Bd6 15.Rd1 Nb2 16.Qb2=) 10...Ra5 11.Nd4 c6 12.Nd2 Nh6 13.Ne6 Qe6 14.c4 dc4 15.Be5 Re5 16.Qc4=.

8.Qc1 Nh6 9.c4 dc4 10.Bc4 (10.de5 Ne5 11.Be5 fe5 12.Bc4 c5 13.0–0 cb4 14.Rd1 Qb6 15.Be6 Qe6 16.ab4=) 10...e4 11.Nfd2 Bc4 12.Nc4 Qe6 13.Qc2 Qc6 14.Qe2 f5 15.Nc3 Qg6 16.0–0 +=.

8.Qc1 Nh6 9.c4 c6 10.c5 (10.Qc3 0–0 11.0–0 e4 12.Nfd2 Ng4 13.f4 b6 14.c5 Qc7 15.cb6 ab6 16.Rc1=; 10.0–0 e4 11.Nfd2 Ng4 12.f4 0–0 13.Nc3 f5 14.Nb3 b6 15.cd5 Bd5 16.Nd5=) 10...Qc7 11.Nc3 (11.Qd1 e4 12.Nfd2 f5 13.0–0 Ng4 14.Bg4 fg4 15.Qb3 Nf6 16.Nc3+=) 11...0–0 12.Qc2 (12.0–0 e4 13.Nd2 Ng4 14.Bg4 Bg4 15.f3 ef3 16.Nf3=) 12...e4 13.Nd2 (13.Ng1 Rae8 14.b5 Rb8 15.f3 f5 16.Nh3=) 13...f5 14.g3 (14.0–0 f4 15.Nde4 Nf5 16.Nd2=) 14...Nf6 (14...Ng4 15.0–0 Rf6 16.Kg2+=) 15.0–0–0 (15.0–0 b6= 16.f3=) 15...Nfg4 (15...a5 16.ba5 Qa5 17.Nb3–/+) 16.Rdf1+= Bg5 (16...b6 17.Kd1+=) 17.Nd1 Be7 (17...Bd8 18.f3 ef3 19.Rf3+=) 18.h3 (18.Nc3!?=) 18...Nf6+= 19.Nc3 Nf7 20.Rfg1 Nd7 21.Qb3 b6 22.g4 f4 (22...bc5 23.dc5 Bf6 24.gf5 Bf5 25.Kd1–/+) 23.cb6 (23.Nce4 Rae8 24.Nc3 fe3 25.fe3 Bg5=) 23...ab6–/+ 24.Nde4 Ng5 (24...Rfe8 25.Nd2 Bh4=) 25.Ng5= Bg5 26.h4 Be7 (26...fe3 27.hg5 ef2 28.Rf1 Qf4 29.Kb1 Bg4 30.Bg4 Qg4 31.b5 Qf5 32.Ka2 cb5 33.Nd5+–) 27.Bd3 fe3 28.fe3 Rf3 29.Re1 (29.Kd2 Raf8=) 29...Nf8 (29...Bg4 30.Be2 Rg3 31.e4 Be2 32.Re2+=) 30.Kb1 (30.b5 Ra5=) 30...Qd6 31.Qd1 (31.g5 c5=) 31...Rf2 (31...Bg4 32.e4–/+) 32.Bc2 Qg3 33.g5 Bg4 34.Qd3 Bf5 (better is 34...Rh2!?+=) 35.e4+= Rf3 36.Qd2 de4 (36...Be6 37.Re2+=) 37.Be4 (37.Ne4 Qc7+/–) 37...Be4 (37...Bg6 38.d5 Rd8 39.Qc2 cd5 40.Nd5+/–) 38.Re4 (38.Ne4 Qc7 39.d5+/–) 38...Rd3? (better is 38...Bd6+=) 39.Qe1+– Bd6 40.Qg3 Rg3 (40...Bg3 41.Rh3 Ra3 42.Kc2 Rdc3 43.Bc3+–) 41.Rc1 (41.Rd1 Rf3+–) 41...Rh3 (41...Rf3 42.d5 cd5 43.Nd5+–) 42.Ne2 (42.d5!? Rc3 43.Rc3 cd5+–) 42...Rc8 43.Rc3 Rc3 44.Nc3 Kf7 45.Kc2 (45.b5 Ng6+/–) 45...h6 46.gh6 gh6 47.Bc1 h5 48.Bf4 Rd8 (48...Be7 49.Re5 Ne6 50.Rh5 Nd4 51.Kd3+/–) 49.d5 (49.Bd6 Rd6 50.a4 Ng6+–) 49...Ng6 50.Bg5 cd5 51.Bd8 de4 52.Ne4 Ke6 53.Bb6 Nh4 54.Kd3 Nf5 55.Kc4 h4 56.a4 (56.Nd6?! Nd6 57.Kd3 Kd5+=) 56...Kd7 57.Ng5 (57.a5 h3+–) 57...Kc6 (57...Be7 58.Nh3+/–) 58.Bg1 Bf4 59.b5 Kb7 60.Nh3 Be3 (60...Bd2 61.Bf2+/–) 61.Be3+– Ne3 62.Kc5 Nc2 63.a5 Kb8 (63...Ne1 64.Nf2+–) 64.Kb6 Nb4 (64...Nd4 65.Ng5+–) 65.a6 (65.Nf4 Nc2+–) 65...Ka8 (65...Nd5 66.Kc5 Nf6+–) 66.Nf4 Kb8 67.Ka5 Nd5 (67...h3 68.Nh3 Nc2+–) 68.Nd5 h3 69.Kb6 (69.Kb6 Kc8 70.Kc6+–) 1–0. Kesmaecker,Philippe (2290) – Righi,E (2115), 34th Olympiad, Istanbul TUR, 2000. (=1.Nf3 d5 2.b4 Qd6 3.a3 e5 4.e3 f6 5.Bb2 Be6 6.d4 Nd7 7.Be2 Be7)

8.Qc1 Nh6 9.de5 A) 9...fe5 10.c4 (10.0–0 0–0 11.c4 c6 12.cd5 cd5 13.Nc3 a6 14.Qd2 Nb6 15.Rfd1 Rad8 16.Qe1=) 10...c6 11.cd5 cd5 12.Nc3 a6 13.0–0 0–0 14.Qd2 Ng4 15.h3 Ngf6 16.Ng5=; B) 9...Ne5 10.Nd4 (10.Nc3 Nf3 11.Bf3 a5 12.b5 0–0 13.e4 de4 14.Be4 Rab8 15.Qe3 Rfe8 16.Rd1=) 10...Bg4 11.f3 Bd7 12.0–0 a5 13.Nc3 ab4 14.ab4 Ra1 15.Qa1 0–0 16.Rd1=.

8.de5 fe5 9.Nbd2 c6 10.c4 Ngf6 11.Ng5 Bg8 (11...Bf5 12.c5 Qb8 13.e4 de4 14.Bc4=) 12.c5 (12.cd5 Bd5 13.e4 Bg8+=) 12...Qc7= 13.Bg4 (13.0–0 0–0–0=) 13...Nf8 (13...Ng4 14.Qg4 0–0–0 15.Ne6 Be6 16.Qe6=) 14.Bh3 (14.Bf5 g6 15.Bc2 Ne6=) 14...e4+= 15.Bg4 (15.Bf5 h6 16.Nh3 Be6 17.Be6 Ne6+=) 15...h6 16.Nh3 g5 (better is 16...Be6!? 17.Bf6 Bf6+=) 17.Bh5+= Nh5 (17...Bf7!? 18.Bf7 Kf7+=) 18.Bh8+/– (18.Qh5?! Bf7 19.Qd1 Rg8+=) 18...Nf6 19.Nb3 (19.Rb1 Ne6+/–) 19...Be6 20.Ng1 Ng6 21.Bg7 (21.Bf6 Bf6 22.Nd4 Bd4 23.Qd4 Ne5+=) 21...Ne5 (21...Nh4!?=) 22.Nd4+= (22.Bh6 Nd3 23.Ke2 Ng4–+) 22...Nd3 23.Kf1 (23.Ke2 Bd7 24.f3 h5+=) 23...Bg4 24.f3 (better is 24.Qb3+=) 24...Bh5? (better is 24...Nh5 25.fg4 Ng7=) 25.Bh6+/– Qe5 26.Bg7 (26.Nh3 Nb2 27.f4 Nd1 (27...Bd1? 28.fe5 Ng4 29.Bg5+–) 28.fe5 Ne3 29.Kg1 Nh7+/–) 26...Nb2 (26...0–0–0 27.Rb1+/–) 27.Qb3+– Nc4 28.Kf2 (28.Ra2 0–0–0+/–) 28...ef3 The mate threat is Ne4 29.Bf6?? (better is 29.gf3 a5 30.Re1+/–) 29...fg2–+ 30.Be5 gh1Q 31.Bg3 0–0–0 (31...Kd7!? 32.Re1 Nd2 33.Ngf3 Ne4 34.Ke2 Qg2 35.Kd3 Bf3 36.Nf3 Qf3 37.Qb2–+) 32.Ne6 Nd2 0–1. Zdechlik – Lipski, Piekary Slaskie, 1984.

7.de5 fe5

8.Bb5 c6 9.Bd3 e4 –+.

8.Nc3 c6 9.Be2 Be7 (9...0–0–0 10.0–0=) 10.Qd2 (10.0–0 0–0–0=) 10...Nh6 (10...Ngf6 11.Rd1=+) 11.h3 0–0 12.Nh2 (12.Rd1 Nf5=+) 12...b5 13.0–0 (13.Ng4 Ng4 14.hg4 a5 15.ba5 Nc5–/+) 13...Qc7 (13...a5 14.ba5 Qc7 15.a4–/+) 14.Qd1 (14.a4 ba4 15.Ra4 Nb6–+) 14...a5–/+ 15.ba5 Ra5 16.Bg4 (16.Nf3 Nc5–/+) 16...Bg4 (16...Ng4!? 17.Ng4 Nc5 18.Rb1–+) 17.Ng4–/+ Nf7 18.a4 b4 19.Ne2 Nc5 (20.f4 ef4 21.Nf4 A) 21...Ra4? 22.Qd4 Ne5 23.Ra4 (23.Ne5 Ra1 24.Ba1 g5+–) 23...Na4 24.Ne5+–; B) 21...Rb8–/+) 0–1. Dietrich,T – Balinov,Ilija (2340), Velden op, 1994.

8.c4 dc4=+ 9.Qd6 cd6–/+ 10.Ng5 Bd5 11.Nc3 (11.e4 c3 12.Nc3 Bb3+=) 11...Ne7 (11...Bc6 12.b5 (12.Bc4?! Bg2 13.Bf7 Kd8=) 12...d5 13.bc6 bc6 14.Ne6+/–) 12.e4 (12.Nd5 Nd5 13.Bc4 N7b6+/–) 12...Bg8 13.Nb5 h6? (13...Kd8 14.Nd6 Kc7 15.Nc4 Nc6+–) 14.Nd6+– Kd8 15.Ngf7 (15.Nb7 Kc7 16.Na5 hg5 17.Bc4 Rb8=) 15...Kc7 16.Bc4 (< 16.Nh8 Kd6 17.0–0–0 Kc6+–) 16...Bf7 17.Nf7 Rh7 18.Ne5 Ne5 (18...Rc8 19.Be6 Rd8 20.Bd7 Rd7 21.Nd7 Kd7 22.0–0–0 Ke8 23.Rd2+–) 19.Be5 Kd7 20.Bf7 (20.0–0–0 Ke8 21.Bb5 Kf7+–) 20...Nc6 21.Bg6 Rh8 22.Rd1 Ke6 23.Bb2 a5 24.b5 Nd8 (24...Ne7 25.Bh5+–) 25.f4 h5 26.f5 Ke7 27.0–0 b6 (27...Rg8 28.f6 gf6 29.Bh7+–) 28.f6 (28...gf6 29.Bf6 Ke6 30.Bh8 Bc5 31.Kh1 Ba3 32.e5+–) 1–0. Wisniewski,J – Jamer,M, corr XXXVI qf Poland–ch, 1992.

8.c4 dc4 9.Qd6 cd6?! 10.Ng5 Bf5 11.Bc4 +=.

8.c4 dc4 9.Qd6 Bd6 10.Ng5 Bd5 (10...c3 11.Nc3 Bb3 12.Nb5+=) 11.Nc3+= h6 (11...Ngf6!? 12.Nd5 Nd5 13.Bc4 N7b6+=) 12.Nd5+/– hg5 13.Bc4 Ngf6 14.f3 (14.Rd1 Rd8+/–) 14...c6 15.Nc3 Nb6 16.Bb3 Ke7 17.Rd1 (17.Ne2 a5 18.ba5 Nbd5+=) 17...a6 (17...g4 18.fg4 Ng4 19.0–0=) 18.Ke2 Rad8 (18...a5 19.ba5 Ra5 20.a4+=) 19.h3+/– Kd7 (19...Rd7 20.e4+/–) 20.e4 Nh5 21.Kf2 Kc7 22.Ne2 Nd7 23.Rd2 Be7 24.Rhd1 Bf6 (24...c5 25.Be6 Nhf6 26.bc5 Bc5 27.Kg3+/–) 25.g3 (25.Be6 Nb6+–) 25...g6 (25...Be7 26.Be6 Nhf6 27.Ke3+–) 26.Bf7 (26.Be6 Nb6+–) 26...Ng7 27.Kg2 Nb6 28.Rd8 (28.Bg6?! Rd2 29.Rd2 Nc4=) 28...Rd8 29.Rd8 Kd8 30.Bg6 Nc4 31.Bc1 Ke7 32.Kf2 (32.f4 Ne6 33.fg5 Bg5 34.Bg5 Ng5+=) 32...Ne6 33.Bf5 Ng7 (33...Nd4 34.Nd4 ed4 35.f4 gf4 36.Bf4+/–) 34.Nc3 Kd6 35.Bc8 Kc7 36.Bg4 Kd6 37.Na4 b5 (37...a5!?+–) 38.Nc5 a5 (38...Ke7 39.Na6 Ne6 40.Be6 Ke6 41.Ke2+–) 39.Nb7 Kc7 40.Na5 Na5 41.ba5 c5 (41...Kb7 42.f4 ef4 43.gf4 gf4 44.Bf4+–) 42.Be3 Be7 43.Ke2 (43.f4 gf4 44.gf4 c4+–) 43...Kb7 44.Kd1 (44.Bd2 Bd8+–) 44...Ka6 45.Bd2 (45...b4 46.f4 ef4 47.gf4 gf4 48.ab4 cb4 49.Bf4 Ka5 50.Kc2+–) 1–0. Thystrup,Preben – Pedersen,Henrik, corr DK, 1991.

8.c4 dc4 9.Qd6 Bd6 10.Ng5 Bf5 11.Bc4 Ngf6 12.Nc3 Ke7 13.0–0 h6 14.Nf7 Rhc8 15.f4 Be6 16.Be6 Ke6 17.fe5 Be5 (17...Ne5 18.Nd6 cd6 19.Nb5+=) 18.Ne5+= Ne5 19.Nb5 c5 (19...a5 20.Nd4 Kf7 21.Nf5+=) 20.bc5 Rc5 21.a4 Ned7 (21...Neg4 22.h3 Ne5 23.Nd4 Kd5 24.Rad1+–) 22.Rad1+/– a6 23.Nd4 Kf7 24.Nf5 Rc7 25.Nh6 gh6 (25...Kg6 26.Nf5+/–) 26.Bf6 Nf6 27.Rd6 h5 (27...Ke7 28.Rdf6 Rh8 29.Rf7 Kd8 30.R1f6+/–) 28.Rff6 Kg7 (28...Ke7 29.Rfe6 Kf8 30.Rd5+–) 29.Rg6 Kf8 (29...Kf7 30.Rh6 Rc1 31.Kf2 Rc2 32.Kf3+/–) 30.Rdf6 (30.Rd5 b5 31.Rh5 Kf7+/–) 30...Ke7 31.Rf5 Rh8 32.Kf2 Rh7 (32...Rc2 33.Kg3+/–) 33.Kf3 (33.Re5 Kd8+/–) 33...Rc4 (33...Rc2 34.Re5 Kd8 35.Kg3+/–) 34.a5 (34.Rb6 Kd8 35.Rd6 Kc7+/–) 34...h4 35.Rb6 Kd8 36.Rb2 (36.Rd6 Kc7 37.Rd4 Rc2+/–) 36...Kc7 37.Re2 Re7 38.e4 Rb4 (38...b5 39.ab6 Kb6 40.Rf4+/–) 39.g3 (39.Rh5 Rb5 40.Rc2 Kd6 41.Rh6 Kd7+/–) 39...hg3 40.hg3 b6 (40...b5 41.ab6! Kb6 42.g4+/–) 41.ab6 Kb6 42.g4 a5 43.g5 a4 44.g6 Rg7 (44...Rb1 45.Rg2 Rb3 46.Kf4+–) 45.Rf6 Kc5 46.e5 Rb1 47.Kf4 Rf1 (47...a3 48.e6 Rf1 49.Kg5 Rg1 50.Kh6+–) 48.Kg5 Rg1 49.Kh6 Re7 50.e6 Kd6 (50...Rh1 51.Kg5 Rg1 52.Kf5+–) 51.Rf4 a3 52.Rd4 Kc5 (52...Kc6 53.Rd3 Ra1 54.Kg5+–) 53.Rd7 a2 54.Rc2 (54.Ra2?! Re6 55.Rc2 Kb6+–) 54...Kb5 55.Rd5 Kb4 56.Ra2 Re6 57.Rg5 (57.Rg5 Rh1 58.Kg7+–) 1–0. Fournier,Frederic (2455) – Abacus (2630), Chessworld.net (Simultanee), 2013.

8.c4 c6 9.cd5 cd5 10.Bb5 e4 11.Nd4 a6 12.Ne6 Qe6 13.Qh5 g6? (better is 13...Ke7 14.Bd7 Qd7+/–) 14.Bd7 (14...Kd7 15.Qe5 Qe5 16.Be5+–) 1–0. van Rooijen,Peter (1640) – Persson,Sven Erik, IECG, 2000.

8.c4! c6 9.cd5 cd5 10.Nc3 a6 11.Ng5 Ngf6 12.Ne6 Qe6 13.Qb3 –+.

8.c4 c6 9.cd5+= Bd5 10.Nc3 Ngf6 11.Nd5 cd5 12.Bb5 0–0–0 13.0–0 h6 14.Qb3 e4 15.Nh4 a6 16.Be2 g5 17.Nf5 Qe6 18.Nd4 White plans b5 18...Qb6 19.b5 a5 (19...Kb8 20.Rfc1+–) 20.Rac1 Bc5 21.Qa4 Kb8 22.Nb3 Rhf8? (22...Rc8 23.Kh1+–) 23.Qa5 (23.Rc5 Nc5 24.Be5 Ka8 25.Nc5 Qc5 26.Qa5 Qa7 27.Qb4+/–) 23...Qa5+/– 24.Na5 Bb6 25.Nb3 g4 26.a4 h5 27.a5 Bc7 28.b6 Bd6 29.Bd4 Ne5 (29...Be5 30.Be5 Ne5 31.Nd4+–) 30.a6 Nf3 (better is 30...ba6 31.Ba6 Nfd7+–) 31.Bf3 gf3 32.a7 (better is 32.Na5!? Ng4 33.Nb7 Bh2 34.Kh1 fg2 35.Kg2+–) 32...Ka8 33.g3 Ng4 (33...Nd7 34.Ra1+–) 34.h3 (34.Rfd1 Rg8+–) 34...Ne5 35.Be5 (35.Nc5 Rfe8+–) 35...Be5+/– 36.Rc2?? (better is 36.Nc5 Rd6 37.Rfd1+/–) 36...Rf6+= 37.Nc5 Rb6 38.Ra2 Rc6 39.Nb7 Rd7 (worse is 39...Kb7 40.a8Q Ra8 41.Rb1 Kc7 42.Ra8+/–) 40.Rb1 (40.Na5 Ra6 41.Nc4 Ra2 (41...dc4? 42.Ra6 Ra7 43.Rh6+–) 42.Nb6 Ka7 43.Nd7 Bc3–/+) 40...Rc8 41.Na5 h4 (41...h4 42.Nb3 hg3 (42...Ra7?! 43.Ra7 Ka7 44.g4+=) 43.fg3 Bg3–+ (43...Ra7?! 44.Rd2–/+); 41...Ka7?? 42.Nc6) 0–1. Roczniak,Jan – Switala,S, corr Poland, 1984.

8.c4 Ngf6 9.c5+/– Qe7 10.Ne5 Ne5 11.Be5 0–0–0 12.Bd4 Kb8 13.Be2 h5 14.h3 (14.0–0 g5+/–) 14...Ne4 15.Nc3 (15.Bh5? Qh4 16.g3 Qh5 17.Qh5 Rh5–+) 15...Qh4 (15...Qf7 16.Ne4 de4 17.Qa4+/–) 16.Ne4 Qe4 17.Qd3?? (better is 17.0–0+/–) 17...Qg2=+ 18.0–0–0 Qf2 19.Rdf1 Qh4 20.Qg6 Exerts pressure on the backward pawn 20...Rh6 (20...Bh3 21.Rf4 Qe7 22.Rh3+–) 21.Qg2 Qe4 (21...Qe7 22.h4–/+) 22.Qg5 (22.Qe4 de4 23.h4 Rh7=) 22...Re8 23.Rhg1 The pressure on the backward pawn g7 grows (23.Kd2 Qh7=+) 23...Be7 24.Qg7 Rh7 25.Qg3 (Black now must not overlook the idea Rf4) 25...Bf5 26.Bd1 (26.Rf5!? Qf5 27.Qg6 Qg6 28.Rg6–/+) 26...Bh4–+ 27.Qf4 Qb1 ½–½. Nielsen,Joergen Axel – Jackson,Keith, corr DEN–GB, 1992.

8.Nbd2 0–0–0 9.c4 =.

8.Nbd2 Be7 9.c4+/– c6 (9...Bf6+/–) 10.c5 (better is 10.cd5!? Bd5 11.e4+/–) 10...Qc7= 11.Ng5 Bf7 (11...Bf5 12.Qf3 g6 13.g4 Bg5 14.gf5=) 12.Nf7 Kf7 13.Qh5 g6 14.Qh3 Bf6 15.e4 Ne7 16.Qb3 (16.Be2 Nf8+=) 16...Kg7 17.Be2 Rhf8 18.Bf3 (18.0–0 b6 19.cb6 ab6+=) 18...Bg5= 19.Qd3 (19.Rd1 d4=) 19...Rad8 (19...Nf6 20.ed5 cd5 21.h4=) 20.h4 (20.0–0!?=) 20...Bd2+= 21.Qd2 de4 22.Be4 Nc5 23.Qe3 (23.Qc2 Ne6+=) 23...Ne4 (better is 23...Na4!? 24.Rb1 Nb2 25.Rb2 Nd5 26.Bd5 cd5–/+) 24.Qe4+= Rd5 25.f4 Qd7 (25...Rf4?? 26.Qf4 Nf5 27.0–0 Qb6 28.Kh2+–) 26.Be5 Kg8 27.h5 Qg4 28.Rh3 (28.0–0 gh5 29.Rf2 Ng6+=) 28...Rf5 (better is 28...gh5 29.Qe3 h4–+) 29.Qe2?? (29.Bb8!? Rf6 30.Qf3 Qf3 31.Rf3 Rh5 32.Kf2+=) 29...gh5 (better is 29...Rfe5 30.fe5 Qd4–+) 30.Bb8 (30.Rd1!?–/+) 30...Ng6–+ 31.Rf3 (31.Qg4 hg4 32.Rg3 h5–+) 31...Rf8 32.Bc7 (32.f5 Rb8 33.fg6 hg6–+) 32...Qd7 33.Be5 Ne5 34.fe5 Rf3 35.gf3 Qf5 36.Kf2 (36.Kf1 Re5 37.Qc4 Kf8–+) 36...Qe5 (36...Qf4 37.Ra2 h4 38.Kg1 Qg3 39.Kf1–+) 37.Rg1 Kf7 38.Qe3 (38.Qe5 Re5 39.Rh1 Kg6–+) 38...Qe3 39.Ke3 h4 40.Rh1 (40.Rg4 Rh5 41.Kf2 h3–+) 40...Rh5 41.Rh3 Kg6 0–1. Matveenko,Yury (2145) – Skvortsov,Andrey (2185), Lysenko Memorial, 2008.

8.Nbd2 Bg4 =.

8.Be2 Be7 9.0–0 Bf6 10.Nbd2 Ne7 11.c4 White gets strong initiative 11...c6 (11...0–0 12.cd5 Bd5 13.e4=) 12.Ne4 Qc7 13.Nfg5 Bf5 14.cd5 Nd5 15.Nf6 N7f6 16.Rc1 0–0–0 (16...Rd8 17.Qa4+=) 17.Qa4+/– White prepares b5 17...Kb8 18.b5 c5 19.e4 Nf4 20.Bc4 Bg6 (20...Ne4? 21.Ne4 Be4 22.Rfe1+–) 21.g3 Nd3 (21...Rd2!? 22.Bc3 Ne2 23.Be2 Re2+/–) 22.Bd3+– Rd3 23.Ne6 Qd6 24.Nc5 Rd2 25.Bc3 Re2 26.Qc4 White threatens strongly Bb4 26...Bh5 27.Bb4 Threatening mate: Na6 27...Qb6 28.Na4 Qd8 29.Rfd1 Threatening mate... how? 29...Qe8 (29...Qd1 30.Rd1 Re4 31.Bd6 Ka8+–) 30.Bd6 Ka8 31.Nb6! ab6 32.Qa4# 1–0. Franke,Claus Peter – Schroeter,Gerald, corr DDR, 1988.

8.Be2 Ngf6= 9.Nbd2 Be7 10.c4 c6 11.Qb3 h6 (11...Bg4 12.Rd1=) 12.Rd1 0–0 13.h3 (13.Qc3 Bg4+=) 13...Bf7 (13...a5 14.c5 Qc7 15.Qc3=) 14.0–0 (14.Qc3 a5 15.c5 ab4 16.ab4 Qe6 17.Ne5 Ne5 18.Qe5 Ra4+/–) 14...Rae8 (14...a5 15.c5 Qc7 16.Qc2=) 15.cd5 (15.Qc3 b6+=) 15...cd5= (worse is 15...Nd5 16.Nc4 Qe6 A) worse is 17.Be5 A1) worse is 17...Ne5 18.Nce5 (18.Nfe5 b5 19.Nf7 bc4 20.Nh6 Qh6 21.Bc4 Kh8+/–) 18...Bf6 19.Nf7+/–; A2) 17...b5–/+; B) 17.Nce5+/–; worse is 15...Qd5 16.Bc4 Qd6 17.Bf7 Rf7 18.Nc4+/–) 16.Nb1 Bd8 (16...Rc8 17.Nbd2+=) 17.Nc3= a6 Black prepares the advance e4 18.Rd2 Bc7 19.g3 (19.e4 Nb6+=) 19...e4 (19...Qe6 20.Kg2+=) 20.Nd4= Re5 (20...Ne5 21.Rc1 Rc8 22.Rdc2=) 21.Rfd1 (21.Rc1 Qe7=) 21...Rg5 Threatening mate... how? 22.Bf1 Ne5 23.Nce2 Nd3 24.Rd3 ed3 25.Nf4 Nh5 (25...Ne4 26.Bg2+= (worse is 26.Bd3 Ng3 27.h4 Rg4–/+)) 26.Nf3 (26.Qd3 Bg6 27.Qd2 Nf4 28.ef4 Rf4+=; 26.Nd3? Ng3! 27.f4 Bh5–+) 26...Nf4 27.ef4 Qf4 28.Ng5 Qg5 29.Qd3 Bb6 30.Bg2 (better is 30.Bd4!? Bd4 31.Qd4=) 30...Bf2–/+ Opening the f–file gets Black a lot of play 31.Kh2 d4 (31...Rd8 32.Bc1 Qe5 33.Bf4+=) 32.Bb7 (32.Bd4 Rd8 33.Qc3 b5=) 32...Bd5 (32...Bh5 33.g4 Bg6 34.Qe2+= (34.Qa6 Qf4 35.Kh1 Be4 36.Be4 Qe4 37.Kh2 Qf4 38.Kg2 Qf3 39.Kf1 Qd1 40.Kg2 Qg1)) 33.Bd5 (better is 33.Bc1!? Bg3 34.Qg3 Qg3 35.Kg3 Bb7 36.Rd4 Rf3 37.Kg4+=) 33...Qd5–/+ 34.Rc1 Be3 Threatening mate: Rf2 35.Rf1 (35.Rc2!?–/+) 35...Rf1 36.Qf1 Qa2 (better is 36...d3!? 37.h4 d2–+) 37.Qg2+= Qc4 38.Qa8 Kf7 39.Qf3 Ke6 40.Qe4 Kd7 41.Qb7 Kd6 42.Qb8 ½–½. Kreuzer – Boehland, Schwetzingen, 1986.

8.Ng5 0–0–0 9.c4 Ngf6 10.Nc3 =.

8.Ng5 0–0–0 9.c4 Ngf6 10.c5 =.

8.Ng5 Be7 9.Ne6 Qe6 10.Nd2 (10.Nc3 Ngf6=) 10...Ngf6 11.c4 c6 12.cd5 cd5 13.Qb3 (13.Bd3 0–0=) 13...0–0 14.Be2 e4 (14...a6 15.Rc1=) 15.0–0 Ne5 (15...Bd6 16.Rac1=) 16.Rad1 (16.Rac1 a5=) 16...Rad8 (16...Rac8 17.Rc1=) 17.g3 (17.f3 ef3 18.Nf3 Nc4=) 17...Qf5 (17...Rc8 18.f3 ef3 19.Nf3=) 18.Kg2 (18.f3 ef3 19.Nf3 Nf3 20.Bf3 Ne4+=) 18...Nfg4 (18...Rc8 19.Qa4 Nc4 20.Nc4 dc4 21.Qa7+=) 19.Bd4 (19.Be5 Ne5 20.f3 ef3 21.Nf3 Ng4=) 19...Nf3 20.h3? (20.Bf3 ef3 21.Kg1 Qh5–+) 20...Nd4 (20...Ngh2!? 21.g4 Qf7 (21...Nd4?! 22.gf5 Nb3 23.Kh2 Nd2 24.Rd2–/+) 22.Bf3 Nf1 23.Kf1 ef3 24.Ba7 Qe6–+) 21.hg4 Nb3 22.gf5 Nd2 23.Rd2 Rf5 24.Bg4 Rf6 25.Rfd1 Ra6 26.Rd5= Rd5 27.Rd5 Ra3 28.b5 ½–½. Wilk,Adam (2035) – Ciesielski,Janusz (2130), Poland–chT reg Poland, 1995.

8.Ng5 Ngf6 9.c4 c6 10.Nc3 (10.cd5 A) 10...cd5 11.Nc3 a6 (11...Bf5 12.Nb5 Qb6 13.Rc1 Bd6 14.Bd3 Bd3 15.Qd3 Ke7 16.Nc3 h6+=; 11...Bg4 12.f3 Bh5 13.Qb3 Qb6 14.Na4 Qd6 15.Nc5 Qb6 16.Nd7 Nd7+/–) 12.Ne6 Qe6 13.Qb3 Qf7 14.Rd1 Nb6 15.b5 a5 16.Na4 Nbd7+=; B) 10...Bd5 11.Nc3 h6 12.Nf3 Be7 13.Nd5 cd5 14.Bb5 0–0 15.Qb3 a5 16.0–0 e4=) 10...a6 (10...Bf5 11.cd5 Nd5 (11...cd5 12.Nb5 Qb6 13.Rc1 Bd6 14.Nc3 h6 15.Nf3 Be6 16.Bb5 Qd8+=) 12.e4 Nc3 13.Qd6 Bd6 14.ef5 Nd5 15.Rd1 Ke7 16.Ne6 g6=; 10...a5 11.cd5 (11.c5 Qe7 12.Be2 Bf5 13.0–0 e4 14.f3 ef3 15.Rf3 Bg4 16.Rf2 Qe3=) 11...Bd5 12.b5 Rc8 13.Rc1 Bg8 14.Qc2 Nc5 15.Na4 Nfd7 16.Nc5 Qc5+/–) 11.Ne6 (11.cd5 cd5 (11...Bd5 12.Qc2 a5 13.b5 Rd8 14.Rd1 Qc5 15.Qf5 g6 16.Qh3 Bb3+=) 12.Ne6 Qe6 13.Qb3 Qf7 14.Rd1 Nb6 15.b5 a5 16.Na4 Nbd7+=) 11...Qe6 12.cd5 cd5 13.Qb3 e4 (13...Qf7 14.Rd1 Nb6 15.b5 (15.Na4+= Nbd7 16.Bd3 b5=) 15...a5 16.Na4 Nbd7+=) 14.Rd1+= Nb6 15.a4 (15.Na4 Nbd7+= 16.Bd4 Be7+=; 15.Ne2 Bd6 16.Nd4 Qd7=) 15...Rd8 (15...Rc8 16.Rd4= Kf7=) 16.a5+= Nc8 (16...Nbd7 17.Be2 Ne5 18.b5+=) 17.Be2 (17.b5 Be7+/–) 17...Bd6+= 18.0–0 (worse is 18.Nd5 Nd5 19.Bc4 Nce7 20.Bg7 Rg8–/+) ½–½. Lebel,Patrick (2185) – Wagenaar,Harm Theo, 14th ch–NATO, Hoevelte DEN (3), 2003.

8.Ng5 Ngf6 9.c4 Bg4 10.f3 Bf5 11.cd5 Nd5 12.e4 +/–.

8.Ng5 Ngf6 9.c4 Bg4 10.f3 h6 11.Nf7 (11.fg4 hg5 12.Nc3 e4+=) 11...Kf7= 12.fg4 a5 13.c5 Qe6 14.Nc3 ab4 15.ab4 Ra1 16.Ba1 c6 17.Be2 b6 18.0–0 bc5 19.b5 Nb6 20.e4 (20.bc6!? Qc6 21.e4 de4 22.Bb5=) 20...d4–/+ 21.Na4 cb5 22.Bb5 Nc8 (22...Na4 23.g5–/+) 23.Qe2 Nd6 (better is 23...Kg6=+) 24.Nc5+= Qc8 25.Nd7 Qe8 26.Bd4! Nb5 (26...ed4 27.e5) 27.Qb5 Bd6? (better is 27...ed4 28.e5 Ke7 29.ef6 Kd8+/–) 28.Be5 Be5 29.Ne5 Ke6 (29...Kf8 30.Qd5 Rh7+–) 30.Qb6 (better is 30.Nc6 Qc8 31.Qf5 Kf7 32.Ne5 Ke7 33.Ng6 Kf7 34.Nh8 Qh8+–) 30...Ke5 31.Rf5 Ke4 32.Qb4 Kd3 33.Rf3 Qe3 34.Re3 Ke3 35.Qc5 Kf4 (35...Kd3 36.Qd6 Ke3 37.Qe7 Ne4 38.Qg7 Ra8 39.Qh6 Kd4+–) 36.Qc7 (36...Ke4 37.Qg7+–) 1–0. Rudbeck,Joergen – Nielsen,Poul Erik, Nordre, 1990.

8.Ng5 Ngf6 9.Ne6 Qe6 10.Bd3 0–0–0 =.

8.Nbd2 Ngf6

9.c4 dc4 10.Bc4 e4 11.Ng5 Bc4 12.Nc4 Qe7 13.0–0 h6 14.Nh3 Qf7 (14...g5 15.Bf6 Nf6 16.Qa4 Qd7 17.Qa5+=) 15.Qc2+/– Rc8 (15...c6 16.Rad1+/–) 16.Rad1 Be7 17.Ne5 (17.Bf6!? Nf6 18.Ne5+/–) 17...Ne5+= 18.Be5 Qe6 (18...0–0!?+/–) 19.Bf6 (worse is 19.Bc7 0–0 20.Rd4 Bd8–/+) 19...Bf6 20.Nf4 Qf5 (better is 20...Qc6 21.Qb3 Be7+–) 21.Rd5 Be5 (21...Qh7 22.Rb5 0–0 23.Rb7 a5+–) 22.Qc5 (22.Qc5 Bd6 23.Rf5 Bc5 24.bc5+–) 1–0. Brinkmann,Wilhelm – Menkhaus,Wolf Dieter, Oberliga Nord N, 2001.

9.c4+= c6 10.cd5 cd5 11.Bb5 0–0–0 (11...e4 12.Nd4+=) 12.0–0 (12.Ng5 Bg8+/–) 12...Kb8 13.Rc1 Be7 14.Ng5 Bg4 15.Be2 (15.f3 Bh5+=) 15...Be2 16.Qe2 Rhf8 17.Rfd1 h6 18.Nde4 Ne4 19.Ne4 Qe6 20.Nd2 (20.Nc3 Nb6+=) 20...Nf6 (20...g5 21.Rc2+=) 21.Nb3 (21.Rc2 Rc8 22.Bc3 Bd6+=) 21...Ng4 (21...Rc8 22.Qb5 Rc1 23.Rc1+=) 22.f3 Nf6 23.Na5 (23.Qb5 Bd6+=) 23...Bd6 24.Qb5 (24.e4 d4+=) 24...Qd7= Black launches an attack 25.Qd3 e4 26.Qe2 ef3 27.gf3 (27.Qf3?? Ng4 28.Qh3 Bh2 29.Qh2 Nh2 30.Be5 Ka8 31.Bh2 Rc8–+) 27...Ka8 (27...Qf7 28.Qb5 Rc8 29.Bf6 Rc1 30.Rc1 gf6 31.f4=) 28.Kg2 (28.Nb3 Qf5+=) 28...Bb8 (28...Qf7 29.Nb3=) 29.Qd3 (29.Bd4!?+=) 29...Qd6 30.Rh1? (better is 30.f4=+) 30...Ne4!–+ 31.Qb5?? (31.Qe4 de4) 31...Qg6 32.Kf1 Rf3 33.Ke1 Re3 34.Kd1 Nf2 35.Kd2 Rd3 36.Ke2 Qe4 37.Kf2 Rf3 (38.Kg2 Qg4#) 0–1. Kreuzer,Uwe – Bartels, Verbandsliga Nordbad, 1993.

9.c4+= c6 10.cd5 Qd5 11.Qc2 +=.

9.c4 c6 10.cd5 Bd5 11.Qc2 +=.

9.c4 c6 10.Be2 Be7 11.cd5 cd5= (worse is 11...Qd5 12.Qc2 c5 13.e4+/–; worse is 11...Nd5 12.Nc4 Qc7 13.Qc2+=) 12.Rc1 (12.0–0 0–0=) 12...0–0 (12...Bf5 13.Nh4 Be6 14.0–0=) 13.0–0 (13.Ng5 Rfc8=) 13...Kh8 (13...Rac8 14.h3=) 14.Qc2 (14.Ng5 Bg8+=) 14...Ne8 (14...a5 15.Ng5+=) 15.Rfd1 (15.h4 a5+=) 15...Bf6 16.Ne4 Qe7 (16...de4 17.Rd6 Pinning (17.Rd6 Deflection; 17.Rd6 Clearance)) 17.Nf6 (17.Nc5 Nc5 18.Qc5 Qf7+=) 17...gf6+= 18.g3 (18.e4 d4+=) 18...Nb6 19.Nd2 (19.e4 Rc8 20.Qb1 Rc1 21.Rc1 d4=) 19...Rc8= 20.Qb1 Rc1 (20...Nd6 21.Kh1=) 21.Rc1 (21.Qc1 Bf5+=) 21...Nd6 22.e4 (22.Bc3 Rc8=) 22...d4 23.f4 Rc8 (23...Na4 24.Ba1=) 24.Rc8+= Bc8 25.Qc2 Be6 (25...Bd7 26.Qc7+=) 26.Nf3 (26.a4!?+=) 26...Nbc4 27.Bc1 (27.fe5 fe5 28.Ne5 Ne5 29.Bd4 Ndf7+=) 27...b5 28.f5 (28.Bd3 Bg4 29.fe5 fe5= (worse is 29...Bf3 30.ed6 Nd6 31.Bb2+=)) 28...Bd7+= 29.Bd3 (29.Bh6 Bc6 30.Nd2 Qe8–/+) 29...Bc6 30.Nd2 Qf7 (30...Qb7 31.Bc4 bc4 32.Nc4+=) 31.Nb3 (31.a4 Kg8=) 31...Qh5 (31...Nf5 32.Na5 Ne7 33.Bh6+= (worse is 33.Nc4 bc4 34.Qc4 Qc4 35.Bc4 Be4–/+)) 32.Nc5 (32.Be2 Qe8 33.Nc5 a5=) 32...Qf3 Now all is on e4 33.Qf2 Qd1 34.Qf1 Qg4 (34...Qh5 35.a4=) 35.Be2+= Qg8 (35...Qg7 36.Qf3+=) 36.Bf3 (36.Qh3 Be4 (worse is 36...Ne4 37.Ne4 Be4 38.Qh4+–) 37.Qh4 d3 (37...Bf5? 38.Bc4 Qg6 39.Bb3+–) 38.Qf6 Qg7 39.Qd8 Qg8 40.Qg8 Kg8 41.Nd3 Nf5+=) 36...Qa8 (36...a5 37.ba5 Qa8 38.Qh3+/–) 37.Qh3+= Qd8 (better is 37...Qe8!?+=) 38.Ne6+/– Qe7 (38...Qg8 39.Qh4 Ne8 40.Bh5+/–) 39.Bh6 Ne8?? (better is 39...Nf5 40.Qf5 Bd7 41.Bg7 Qg7 42.Ng7 Bf5 43.Nf5 Na3+–) 40.Bh5+– Ncd6 (40...Be4 41.Bg6!! Nd2 42.Bf8 Nf3 43.Kf2+–) 41.Bf8 Qd7 42.Bg6 Kg8 (42...Be4 43.Bg7 Qg7 44.Ng7 Kg7 45.Qh7 Kf8 46.g4+–) 43.Bg7! Qg7 (43...Ng7 44.Qh7 Mate attack) 44.Ng7 hg6 (44...Kg7 45.Qh7 Kf8 46.Qa7 Be4 47.Qc5+–) 45.Ne8 Be8 46.fg6 (better is 46.Qh6!? gf5 47.Qf6 Ne4 48.Qf5 Nc3 49.Qe5 Kf7+–) 46...Bg6 47.Qe6 Nf7 48.h4 (48.h4 Kg7 49.Kf2+–) 1–0. Melich,Jindrich (2160) – Kukacka,Martin (2090), CZE–chT2 Czechia, 1999.

9.c4+= e4 10.Nd4 +=.

9.c4 Bg4 10.Qc2 (10.cd5 Qd5 11.Qa4 c6+/–) 10...Bf3 11.Nf3 a5 12.Qa4 c6 13.cd5 Nd5 14.b5 c5? (better is 14...Qe6!?+/–) 15.Rd1+– N5b6? (15...N7b6 16.Qe4+–) 16.Qg4 (better is 16.Qe4 Qg6 17.Qb7 Rb8+–) 16...Qf6 17.Bc4 (better is 17.Qe4!? 0–0–0+–) 17...Nc4?? (better is 17...h5 18.Qh3 Rd8+–) 18.Qd7# (18.Qc4?! 0–0–0+–) 1–0. Fabisch,Christian (2190) – Schieder,Josef (2065), Steirische Landesliga, 2011.

9.Be2 c6 10.c4 Be7 11.Qc2 0–0 (11...0–0–0 12.cd5 Nd5 13.Nc4+/–) 12.Ng5 Bf7 13.c5 Qc7 (13...Qb8 14.Nf7 Rf7 15.e4+=) 14.Bg4+/– Kh8 15.Bd7 Qd7 16.Nf7 (16.Be5 Bg6 17.Qb3 Qg4–/+) 16...Rf7 17.Nf3 Ng4 18.Ne5 (worse is 18.Be5 Rf3 19.Bg7 Kg7 20.gf3 Ne5 21.Rg1 Kh8–/+) 18...Ne5 (18...Rf2? 19.Qf2 (19.Nd7? Rc2 20.Bd4 Rg2–+) 19...Nf2 20.Nd7 Nd3 21.Ke2 Nb2 22.Raf1+/–) 19.Be5 Qe6 20.Bc3 Bf6 (20...Rf4 21.0–0 Rc4 22.Qb2+=) 21.0–0 Re8 (21...Kg8 22.Rae1+=) 22.Rad1 Bc3 (22...Kg8 23.Bf6 Qf6 24.Qb3+/–) 23.Qc3+/– Rf5 (23...Kg8 24.Rd4+/–) 24.Rd4 Rg5 (24...Kg8 25.Re1+/–) 25.Rh4 Kg8 26.Qd3 (26.Rd1 Rf8+/–) 26...g6 (26...Qf5 27.Qb1+/–) 27.g3 Rf5 (27...Re5 28.Rd1+/–) 28.b5 Qe7 29.bc6 bc6 30.Qc2 Ref8 31.Rb4 Rf3 32.Qc3 g5 (32...Qg7 33.Qd2+/–) 33.a4 h5 (33...Qg7 34.Qc2+/–) 34.a5 Qf7 (34...Qg7 35.Qd3+/–) 35.Qe5 (35.Qd2 Qe7+/–) 35...Rf5 (35...g4 36.Qb2 Qg7 37.Qc2+/–) 36.Qb2 Qe6 (36...Qg7 37.Qb1+/–) 37.Rb7 R5f7 38.a6 g4 (38...h4 39.Qe2+–) 39.Rd1 Qf5 (39...Qg6 40.Rd2+/–) 40.Rd2+– Rb7 (40...Qg5!?+–) 41.ab7 (41.Qb7?! Qe4+/–) 41...Rb8 42.Rd4 (42.Qb3 Qf3+–) 42...Qd7 (42...Qf7 43.Rb4+–) 43.Rb4 Qe7 (43...Qf7 44.Qb1 a6 45.Rb6+–) 44.Qb1 Qh7 (44...Qf7 45.Kf1+–) 45.Qb3 (45.e4!? de4 46.Qa2 Qf7 47.Qa7 Qc7+–) 45...Qf7 46.Kf1 Qe7 (46...d4 47.ed4 a5 48.Qf7 Kf7 49.Rb6+–) 47.Qd3 Qh7 (47...Rb7?? 48.Qg6 Qg7 49.Qe8 Qf8 50.Qf8 Kf8 51.Rb7+–) 48.Qa6 1–0. Degterev,Pavel (2275) – Vaassen,Jack (2125), SH–2007–0–00158, 2007.

7.de5 Ne5

8.Nbd2 Nf3 9.Qf3 (worse is 9.gf3 0–0–0+=) 9...Nh6 10.c4 c6 11.h3 Be7 12.c5 Qc7 13.Bd3 Nf7 14.Qe2 Ne5 15.Bc2 Rd8 16.Nb3 Nc4 17.Nd4 Bf7 (17...Nb2? 18.Ne6 Qe5 19.Nd8 Bd8 20.0–0+–) 18.Bc3 b6 19.Nb3 Bg6 20.0–0 (20.Bg6 hg6 21.Qg4 Kf7=) 20...Bc2 21.Qc2 Kf7 (21...bc5!? 22.bc5 0–0=) 22.Bd4+= g6 23.Qc3 h5 (23...Kg7 24.a4+=) 24.f4 (24.e4 Qf4+=) 24...Rhg8 25.e4 Qd7 26.e5 f5 27.Qf3 (better is 27.cb6 ab6 28.a4+/–) 27...Ke6? (27...Qe6 28.Qf2 Rb8 29.cb6 ab6 30.Rfd1+/–) 28.Ra2 (28.cb6 a6+–) 28...Rdf8? (28...Qb7 29.Re1+/–) 29.Bf2 (29.cb6 ab6 30.Bb6 Qb7+–) 29...Qe8? (better is 29...Kf7!?+/–) 30.cb6+– ab6 31.Nd4 Kf7 32.b5! cb5 33.Qd5 Kg7 34.Ne6 Kh7 35.Nf8 Rf8 36.Rb1 Na3 37.Rb3 b4 38.Bb6 Qc8 39.Be3 Kh6 40.Qd3 Rd8 41.Qe2 Qe6 42.Rab2 Nc4 43.Rb4 Ne3 44.Qe3 Bb4 45.Rb4 Rd7 46.Rb6 Rd1 47.Kh2 Qc4 48.Qg3 Qf7 49.Qg5 Kh7 50.Rf6 Qe8 51.e6 Re1 52.Rf7 (52.Rf7 Qf7 53.ef7+–) 1–0. Krafzik,Joachim (2070) – Porubszki,Georg (1995), Liechtenstein Seniors op, 2004.

8.Ne5 fe5 9.Qh5 Kd7 10.Bb5 c6 11.Be5 +/–.

8.Ne5 fe5 9.Qh5 Kd7 10.Be5 +/–.

8.Ne5 fe5 9.Qh5 Kd8 10.Be5 +/–.

8.Ne5 fe5 9.Qh5 Bf7 10.Qe5 Qe7 11.Qe7 Ne7 12.Bd3 +/–.

6.d4 e4

7.Nfd2 Nc6 8.c4 Nge7 9.cd5 Bd5 (worse is 9...Qd5 10.Nc3 Qd7 11.Nde4+/–) 10.Nc3 f5 11.Nd5 Nd5 12.Nc4 Qe6 13.Rc1 0–0–0 14.b5 Nce7 15.Ne5 Ng6 16.Bc4 Bd6 17.Ng6 hg6 18.Qb3 (18.h3 f4 19.Qb3 Rh5+=) 18...Be7 (18...Bh2!? 19.Qc3 Qf7–/+) 19.a4 Qd6 20.Bd5 Qd5 21.Qd5 Rd5 22.Ke2 Kd7 23.f3 ef3 24.Kf3 (24.gf3 f4=) 24...Bg5 25.h3 Re8 26.Rc3 c6 27.bc6 bc6 28.g4 Ra5 29.Rg1 Bf6 30.Rc4 Rb8 31.Bc3 Ra6 32.a5 Rb5 (32...Rh8 33.Rg3=) 33.h4 Bh4 34.gf5 Rf5 (34...gf5? 35.Rg7 Kd8 36.d5+–) 35.Ke4 Rg5 36.Rg5 Bg5 37.Kf3 Ke6 38.e4 Bf6 39.e5 Be7 40.Ke4 g5 41.Bd2 g6 (41...g4!?=) 42.Rc1+= Bd8 43.Rh1 Ba5? (better is 43...g4+=) 44.Ra1+– (44.Bg5?! Bb4+=) 44...c5?? (better is 44...g4 45.Ba5 g5+–) 45.d5 (45.Ba5?! cd4 46.Kd4 g4+–; worse is 45.Ra5 Ra5 46.d5 Ke7 47.Ba5 g4+–) 45...Kd7 46.Ba5 (46.Ra5 Ra5 47.Ba5 Ke7+–) 46...g4 47.e6 Ke7 (47...Kc8 48.Kf4 c4 49.Re1 Ra5 50.e7 g5 51.Kg4+–) 48.Bd8! (48.Bd8 Kd8 49.Ra6 Kc8 50.Rc6 Kd8 51.Ke5 a5 52.Kf6 g3 53.Kf7 g2 54.e7 Kd7 55.e8Q#) 1–0. Fournier,Frederic (1930) – Cpctc (1725), Chess.com (Tournoi ferme), 2012.

7.Ng1 a5 8.b5 Ne7 9.c4 dc4 10.Nd2 Qd7 =.

7.Ng5 Ngf6 =.

7.Nfd2 a5

8.ba5 Nh6 9.c4 dc4 10.Nc3 Qc6 11.Nde4 Ra5 +=.

8.b5 =.

7.Nfd2 c6

8.c4 a5 9.c5 (9.b5 Be7+=) 9...Qc7 10.Nc3 (10.b5 Be7+=) 10...Nh6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.b5 Nd7 (11...Be7 12.Qh5 Nf7 13.Rc1+=) 12.b6 (12.Be2 Be7+=) 12...Qd8 13.Be2 (13.Ne2 Qe7+=) 13...f5= 14.0–0 (14.Nb3 Qg5 15.Bf1 Ng4=) 14...Qh4 (14...Qg5 15.Qb3=) 15.f3 (better is 15.Qe1=) 15...Be7 (15...Qg5 16.f4 Qf6 17.Qe1=) 16.Rf2 (better is 16.fe4 Bg5 17.ed5 Be3 18.Kh1 Bd5 19.Nd5 cd5 20.Nf3+–) 16...f4 (16...0–0 17.Qe1=) 17.Nf1 (17.fe4? fe3 18.Rf1 ed2 19.ed5 Qd4 20.Kh1 cd5–/+) 17...0–0 18.Qe1 Nc5 (18...fe3 19.Ne3 ef3 20.Bf3=) 19.dc5+= fe3 20.Ne3 Bc5 21.g3 Qe7 22.Na4?? Be3–+ 23.Bc1 Bf2 24.Qf2 ef3 25.Bf3 Bg4 26.Qe3 Qe3 27.Be3 Rf3 28.Bc5 Bh3 29.Nb2 Re8 30.Bf2 Ng4 (31.Nd3 Rd3 32.a4 Re2 33.Be1 Rg2 34.Kh1 Rf3 35.Ba5 Nf2#) 0–1. tschulz – myfairlady, internet, 2004.

8.c4 Nd7 9.Nc3 a6 10.Be2 Be7 (10...f5 11.cd5 cd5 12.Nb3+=) 11.Nb3 (11.0–0 f5+=) 11...Nh6 12.0–0 0–0 13.Nc5 Nc5 (13...Rab8!?+=) 14.dc5+/– Qe5 15.Qb3 Bd8 (15...dc4!? 16.Bc4 Kf7+/–) 16.cd5+– cd5 17.Rad1 Bc7 18.g3 Kh8 19.Nd5 Qf5 20.f3 (20.f4 ef3 21.Bf3 Ng4+–) 20...Rad8 21.fe4 Qe4 22.Bf3 Qg6 23.Qd3 Nf5 24.Qe2 Bg3 25.hg3 Ng3 26.Qg2 Nf1 27.Qg6 (27.Kf1 Qh6 28.Ke2 a5+/–) 27...hg6+/– 28.Kf1 g5 (28...Kg8 29.Kg2+/–) 29.Kf2 Rf7 (29...Kh7 30.Rd4+–) 30.Rd4 Rdf8 (30...Rb8 31.Nb6+–) 31.Nc3 Kg8 (31...Re7 32.Ne4 Bd7 33.Nd6+–) 32.Rd6 Bc4 (32...Bb3 33.Ne2 Bc4 34.Nd4+–) 33.Ne4 g4 34.Bg2 (34.Bg4?! f5 35.Bh5 fe4 36.Bf7 Rf7 37.Kg1 Rf3=) 34...f5 (34...Re7 35.Rb6 Rd8 36.Nd6 g3 37.Kf3 Bd5 38.e4+–) 35.Ng5 Re7 (35...Rc7 36.Bd4+–) 36.Bd4 Rfe8 (36...f4 37.ef4 Rf4 38.Kg3+–) 37.Rb6 1–0. marekt – Pawnhunter1, chessworld.net, 2015.

8.c4 Ne7 9.Nc3 Nd7 10.cd5 cd5 11.Rc1 a6 12.Nb3 Nc6 13.Nc5 Nc5 14.bc5 Qc7 0–1. luminarydebris (1620) – workchess (2215), net–chess.com, 2011.

8.c4 Nh6 9.Nc3 a6 10.cd5 (10.Be2 Qc7+=) 10...cd5 11.Be2 Be7 12.Nb3 (12.0–0 Nc6+=) 12...b6= 13.0–0 0–0 14.b5 (14.f3 ef3 15.Bf3 Nc6=) 14...a5 (14...f5 15.f3=) 15.Na4 (15.a4 Qd7+=) 15...Nd7 (15...f5 16.f3=) 16.Qd2 (16.Rc1 Rac8=) 16...Bd8 (16...Ng4 17.g3+=) 17.Rac1 Nb8 (17...Bc7 18.g3 Rac8 19.Rc6+/–) 18.Rc3 (18.f3 Bc7 19.g3 Bh3+=) 18...Bd7 (18...Bc7 19.g3=) 19.Rfc1+= Qe6 (19...Ng4 20.Bg4 Bg4 21.h3=) 20.Qd1 Nf7 21.Nd2 Nd6 22.Qb3 Qf7 (22...f5 23.f4+=) 23.R3c2+/– Be6 24.Nc3 f5 25.f3 Nd7 26.a4 f4 Black fights for the Initiative 27.ef4 (27.fe4 Ne4 28.Nde4 de4 29.d5+/–) 27...Bf6+= 28.Nd1 Nf5 29.fe4 (29.Rc7 Rae8+=) 29...Nd4–/+ 30.Bd4 Bd4 31.Kh1 Nc5 32.Qf3 (32.Rc5 bc5 33.f5 Bd7+=) 32...de4–/+ (32...Na4?! 33.Qd3 Qf6 34.ed5=) 33.Ne4 Bd5 (33...Na4? 34.Ng5 Bd5 35.Qd3+– (35.Nf7 Bf3 36.Bf3 Kf7 37.Rc7 Kf6 38.Ba8 Ra8+–)) 34.Bc4? (better is 34.Bd3!? Be4 35.Be4 Ne4 36.Qe4–/+) 34...Ne4–+ 0–1. Groenendal,C J – Van Son,J, corr Netherlands, 1989.

7.Nfd2 Nd7

8.c4 f5 9.Nc3 Nf6 (--> 6.d4 e4 7.Nfd2 f5 8.c4 Nf6 9.Nc3 c6).

8.Be2 a5 9.b5 =.

8.Be2 Nh6 9.c4+= c6 (9...a5 10.Qa4+=) 10.Nc3 Be7 11.cd5 (11.0–0 0–0+=) 11...cd5 12.Nb5 Qb8? (better is 12...Qb6+=) 13.Rc1+– Bd8 14.Rc8! Qc8 Theme: Deflection from d6 15.Nd6 Theme: Double Attack 15...Ke7 16.Nc8 Rc8 17.0–0 Bc7 18.Nb3 Rhe8 (18...Kf7 19.Nc5 Nc5 20.dc5+–) 19.Nc5 White gets the initiative 19...Nc5 20.bc5 (20.dc5 Kf8+–) 20...Nf5 (20...Kf8 21.Qa4 Bb8 22.Qb3+–) 21.Qa4 Ra8 22.Rb1 Kf8 23.Bc3 Reb8 (23...b6 24.Rc1+–) 24.Ba5 Ba5 25.Qa5 b6 26.Qb5 (26.Qb4 Kf7 27.c6 Rc8+–) 26...Ne7 27.h3 (27.Rb2 Kg8+–) 27...Bf7 (27...Kf7 28.Rf1+– (28.cb6 Rb6 29.Bh5 g6 30.Bg6 hg6–/+)) 28.Qb2 (28.Qd7 bc5 29.Rb8 Rb8 30.dc5 Be8 31.Qa7 Rb1 32.Kh2 Rb2+–) 28...Be8 29.Qa1 b5 (29...bc5 30.dc5 Nc6 31.Ba6 Rb1 32.Qb1+–) 30.Qc3 (30.Bg4 f5 31.Bd1 Kg8+–) 30...a6 31.Bg4 (31.Bg4 f5 32.Be2+–; 31.Rc1 Kg8+–) 1–0. Cottarelli,Franco – Wozniak,Andrzej, corr 3GMM–33, 1997.

8.c4 c6

9.Nc3 Be7 10.cd5 cd5 11.Nb5 Qb6 12.Rc1 a6?? (better is 12...Kf7+=) 13.Nc7+– (13...Kf7 14.Na8+–) 1–0. De Visser,Arno – Flazinski,Pawel, corr or01–014 E–mail, 2001.

9.Nc3 Ne7 10.Be2 +=.

9.c5 Qc7 10.Be2 f5 11.f4 (11.0–0 Ngf6=) 11...Be7 12.0–0 Ngf6 13.h3 (13.Qe1 0–0=) 13...0–0–0 (13...0–0 14.Nc3=) 14.Kh1 (14.b5 cb5 15.Bb5 a6+=) 14...h5 (14...a6 15.Nc3 Rhg8 16.a4=) 15.Nc3 (15.b5 Kb8+=) 15...g5 (better is 15...a6=) 16.g3?? (better is 16.b5 g4 17.bc6 Qc6 18.h4+=) 16...h4–/+ 17.g4 fg4 18.fg5 (better is 18.f5!? Qg3 19.Bg4–/+) 18...Qg3–+ 19.hg4 (19.gf6 Qh3 20.Kg1 Qe3 21.Rf2 Nf6 22.Nf1–+) 19...Ng4 20.Bg4 Bg4 (20...Qg4?! 21.Qg4 Bg4 22.Rg1 Bf3 23.Nf3 ef3 24.Raf1=+) 21.Qe1 Qh3 22.Kg1 Bg5 23.Nd1 (23.Rf4 Bf4 24.ef4 Rdf8–+) 23...Rdf8 (23...Bd1 24.Rf2 Be3 25.Qe3 Rdg8 26.Qg3 Qg3 27.Kh1 Qg1) 24.Rf8 Rf8 25.Nf1 Bf3 (26.Qe2 Qh1 27.Kf2 Qg2 28.Ke1 Qe2#) 0–1. Lozinski,Jozef – Sokolik,Bogdan, corr 1.AMM Poland, 1991.

9.Nc3 a6

10.Na4 Ne7 11.Nc5 Nc5 12.bc5 (12.dc5 Qd7+=) 12...Qc7 13.cd5 Bd5 (13...cd5!? 14.Qb3 Kf7+=) 14.Qc2+/– f5 15.Nc4 Nc8 (15...Bc4 16.Bc4 Nd5 17.Bc3+/–) 16.g3 (16.Bc3 Be7+/–) 16...Be7 (16...b5 17.Ne5+=) 17.Bc3+/– Bf6 18.Rb1 0–0 19.Qb2 Rf7 (19...Rb8 20.Be2+=) 20.h4 g6 (20...Rb8!?+/–) 21.Be2 Qd7 22.Qc2 (22.Ne5 Be5 23.de5 Rb8+–) 22...Qe6+/– 23.Na5 (23.Ne5 Be5 24.de5 Na7+/–) 23...Ra7 (23...Rb8 24.h5+/–) 24.Rb4 (24.h5 g5+/–) 24...Bd8 25.Nc4 (better is 25.Rb2+/–) 25...h6?? (better is 25...a5 26.Ra4 b5 27.cb6 Nb6 28.Nb6 Bb6+=) 26.Ne5 (26.Qa4 Rg7+/–) 26...Rg7 27.Rb1 (27.h5 gh5 28.Rh5 b5+/–) 27...Bc7+/– 28.h5 (28.0–0 b5+/–) 28...g5 29.Kd2 (29.0–0 Be5 30.de5 f4+=) 29...b5+= 30.cb6 Nb6 31.Ba5 Nd7 (31...Be5 32.Bb6 (worse is 32.Rb6 Bc7–/+; worse is 32.de5 Nd7+=) 32...Rad7 33.Ba6+= (33.de5 Bb3 34.Bd4 Bc2 35.Kc2 Rb7–+)) 32.Bc7+/– Rc7 33.Nd7 Rgd7 34.Rb8 (worse is 34.Ba6 c5 35.Rb8 Kf7+=) 34...Kh7 35.Qc5 Re7 (35...Rb7 36.Rb1 Rb1 37.Rb1+/–) 36.Rhb1 f4 37.gf4 gf4 38.Rg1 (worse is 38.Ba6 Qf6+=) 38...f3 (38...Rb7 39.Rg6 fe3 40.fe3+/–) 39.Rg6 (39.Ba6 Qf6 40.Bc8 Rf7+/–) 39...Qf5 40.Qd6 (40.Bc4 Red7 41.Bd5 Rd5+–) 40...Qh5 (40...fe2 41.Rh6 Kg7 42.Rhh8 e1B 43.Ke1 Qf2 44.Kf2 Rf7 45.Kg2 Rf2 46.Kf2 Rf7 47.Kg2 Be6 48.Rbg8 Kf6 49.Rh6 Kf5 50.Qe6) 41.Rgg8?? (better is 41.Rh8! Kh8 42.Rh6 Qh6 43.Qh6 Kg8 44.Ba6+/–) 41...Bg8–+ (41...Bg8 42.Bd1 Qh4–+; 41...fe2?? 42.Qg3 e1B 43.Ke1+–) 0–1. Morriss,Pete (2005) – Wittmann,Walter (2220), Rijeka CRO, 2013.

10.Na4 Nh6 11.Nc5 Nc5 12.dc5 +=.

10.Nb3 b6 +=.

10.cd5 cd5 11.Be2 Nh6 12.Qb3 White intends b5 12...Be7 13.Rc1 0–0 14.b5 (14.0–0 f5=) 14...a5 (14...f5 15.f3=) 15.0–0= f5 16.Na4 f4 (16...Rac8!?=) 17.Nc5+= Rab8 (better is 17...fe3!? 18.fe3 Rf1 19.Rf1 a4 20.Na4 Bg5=) 18.Nde4!+– Nc5 (18...de4 19.Qe6 Double attack (19.Qe6 Pinning; 19.Qe6 Deflection)) 19.Nc5 Rf6 (19...fe3!? 20.fe3 Rf1 21.Rf1 Bg4+/–) 20.Ne6 Re6 (20...a4 21.Qa4 Re6 22.e4+–) 21.Bf3 Rd8 22.ef4 (better is 22.Rc5 a4 23.Qd5 Qb6+–) 22...Nf5? (22...Qd7 23.Rfe1 Re1 24.Re1+–) 23.g3 (better is 23.Rc5!? a4 24.Qa2 g6 25.Rd5 Qb6+–) 23...Bf6 (23...Qd7 24.Qd3 g6 25.Rfe1+–) 24.Bg4 (24.Rc5!? Ne7+–) 24...g6 25.Bf5 gf5 26.Qc3 Re4 27.Rfd1 Ra8 28.Qc7 Qc7 29.Rc7 Rb8 (29...Re7 30.Rdc1 Rae8 31.Kf1+–) 30.Rd7 Re2 31.Bc1 Re4 (31...Bd4 32.Rd4 Re1 33.Kg2 Rc1 34.R4d5+–) 32.Be3 Be7 33.a4 b6 (33...Kf7 34.Rd5 Ke6 35.Re5 Re5 36.fe5+–) 34.Rd5 Rf8 35.Re5 Bd6 (35...Rd8 36.d5 Bc5 37.Bc5 bc5 38.d6+–) 36.Re4 (36.f3!? Re3 37.Re3 Rd8+–) 36...fe4 37.Rc1 Rf7 38.Rc6 Bc7 39.d5 Rd7 40.Bb6 Bb6 41.Rb6 Rd5 42.Ra6 Rd4 43.Ra5 Rb4 44.Ra6 Kf8 45.b6 Ke8 (45...h5 46.Kf1+–) 46.a5 Rb5 (46...Rb1 47.Kg2 Rb2 48.Kh3+–) 47.Ra7 Kd8 (47...h5 48.Rh7 Ra5 49.b7 Ra1 50.Kg2+–) 48.b7 h6 (48...Kc7 49.a6+–) 49.Ra8 Kc7 50.b8Q! Rb8 51.Rb8 Kb8 52.f5 1–0. Osmak,Yulia – Dvornitskaya,Elena, Kiev–ch (Women), 2009.

10.Be2 Ne7 11.0–0 Ng6 12.Qb3 Be7 13.c5 Qc7 14.Nde4! f5 (14...de4 15.Qe6 Pinning (15.Qe6 Deflection)) 15.Nd2 Bf7 16.Bd3 f4 17.e4 Nf6 18.e5 Nd7 19.Bf5 Ndf8 20.Na4 Be6 21.Nb6 Rb8 22.Qh3 Bf5 23.Qf5 Nd7 24.Na4 Ndf8 (24...Qc8 25.e6 Nf6 26.Nb6+–) 25.e6 Bf6 26.Nb6 Ne7 27.Qg4 Neg6 (27...Nfg6 28.Rae1+–) 28.Rfe1 Ne7 29.a4 Kd8 (29...Nfg6 30.Bc3+–) 30.b5! h5 (30...ab5 31.ab5 Combination; 30...cb5 31.ab5 Combination) 31.Qh3 Nc8 32.Nc8 Qc8 33.Bc3 (33.Qf5 Rh6 34.Nf3 Ng6+–) 33...Ke7 34.Nf3 Qe8 (34...Ne6 35.Re6! Qe6 36.Re1 Qe1 37.Ne1+–) 35.Nh4 Ng6 36.Nf5 Kf8 37.Nd6 Qd8 38.Nf7 Ke7 (38...Qe8+–) 39.Nd8 (39.Nd8 Kd8 40.Qd3+–) 1–0. marekt (2030) – onny555 (1830), gameknot.com, 2014.

10.Be2 Nh6 11.0–0 Be7 12.cd5 (12.f3 ef3 13.Rf3 Bg4=) 12...cd5 13.Nb3 (13.Rc1 0–0+=) 13...b6= 14.f3 f5 15.Rc1 0–0 16.Ba6 ef3 (16...Bg5 17.f4 Ra6 18.Nb5= (worse is 18.fg5 Ng4 19.g3 Ne3–/+)) 17.Nb5 Qb8 18.Qf3 (18.Rf3 Ng4 19.Nc7 Nc5=) 18...Ng4 Threatening mate: Qxh2 19.g3 Bg5 Exerts pressure on the backward pawn (worse is 19...Ra6 20.Nc7 Bg5 21.Na6+/– (worse is 21.Ne6 Be3 22.Kh1 Bc1 23.Nf8 Qf8 24.Qd5 Qf7 25.Qf7 Kf7 26.Bc1 Ke6+/–)) 20.Rfe1 Ndf6 (better is 20...Bd8!? 21.Rc6 Ra6 22.Re6 Ndf6 23.Qf5 Qc8+/–) 21.Nc7+– Bf7 22.Na8 Qa8 23.Bb5 Ne4 (23...Be8 24.Bd3 Ne4 25.Re2+–) 24.h3 (24.Bd7 Ne3 25.Re3 Bh5 26.Qh5 Be3 27.Kg2 Bc1 28.Bc1 Rf6+–) 24...Ngf2 25.Rf1 (25.h4 Bh6+–) 25...Nh3 26.Kh2 Qb8 (26...Be7 27.Qf5 Nhg5 28.Bc6+/–) 27.Qg2 (27.Kh3 Bh5 28.Qg2 Be3+–) 27...Bh5 (27...Be3 28.Qh3 (28.Kh3 Be8 29.Be8 Qe8+=) 28...Bc1 29.Bc1+– (worse is 29.Rc1 f4+/–)) 28.Nd2 (28.Qh3 Bg4 29.Qg2 Be3 30.Bd7=) 28...Nd2 (28...Bg4 29.Bc6 Qd6 30.Ne4 de4 31.Qd2+=) 29.Qd2+– (29.Qh3 Nf1 30.Rf1 Bg4–+) 29...Bg4 30.Qg2 (30.Qc3 Qd6+–) 30...Be3 (30...Qd6 31.Rc6 Qd8 32.Rc3+–) 31.Qd5 (31.Rce1 f4 32.gf4 Bf4 33.Kh1 Qc8 34.Qd5 Kh8+–) 31...Kh8 32.Rce1 f4 33.gf4 Bf4 34.Kh1 Ng5 35.Re7 Bf3 36.Rf3 Nf3 37.Rb7 Qc8 (better is 37...Qd8 38.Qd8 Rd8+–) 38.Qf3 Bh6 (38...Qe6 39.Be2 Qh6 40.Qh5 Qc6 41.Bf3=) 39.Rc7 Qd8 (39...Rf3?? 40.Rc8 Rf8 41.Rf8) 40.Rf7 Rf7 41.Qf7 Qh4 42.Kg2 Qg4 43.Kf1 (43.Kf2 Qh4 44.Kf3 Qh1 45.Kg4 Qg2 46.Kf5 g6 47.Ke5 Bg7 48.Kd6+–) 43...Qd1?? (43...Qh3 44.Kf2 Qh4 45.Kf3 Qh1 46.Kg4 Qg2 47.Kf5 g6 48.Ke5 Bg7 49.Kd6 Qa8+–) 44.Kf2+– Qd2 45.Be2 g6 (45...Qe3 46.Kf1 Qh3 47.Ke1 Qh1 48.Qf1 Qf1 49.Kf1+–) 46.Kf1 (46.Kf1 Qf4 47.Qf4 Bf4 48.a4+–; 46.Qe8 Kg7 47.Qe5 Kf7+–) 1–0. Kamminga,Gosse – Roerqvist,Kent, corr NLD–SVE, 1997.

9.Nc3 f5

10.Qc2 Ngf6= 11.Rc1 Be7 12.Na4 (12.cd5 Nd5 (12...cd5? 13.Nb5 Qb6 14.Nc7 Kf7 15.Na8 Ra8 16.Be2+–; 12...Bd5?! 13.Nd5 Nd5 14.Be2=) 13.Nd5 Bd5=) 12...f4 (12...0–0 13.cd5 Nd5 14.Nc5 Nc5 15.dc5=) 13.cd5 cd5 (worse is 13...Qd5 14.Nc3 Qh5 15.ef4+/–) 14.ef4 Qf4 15.Nc5 (15.Qc7 Qc7 16.Rc7 b6=) 15...Bc5 (15...Nc5 16.g3 Qf5 17.dc5–/+) 16.dc5 (worse is 16.bc5 Ng4 17.Nb3 0–0–/+ (17...Nh2?! 18.c6 bc6 19.Qc6=)) 16...Ng4. Laber,Seweryn – Sokolik,Bogdan, corr 1.AMM Poland, 1991.

10.cd5!? cd5 11.Nb5 +=.

10.cd5 cd5 11.Qh5 g6 12.Qe2 =.

10.cd5 Bd5

11.Nd5 cd5 12.Rc1 a5 +=.

11.Nd5 cd5 12.Rc1 Ngf6 +=.

11.Be2 Ngf6 12.b5 (12.Nd5 Nd5 13.Nc4 Qg6+–) 12...Be7 13.0–0 0–0 14.a4 (14.Nd5 Nd5 (14...Qd5?? 15.Bc4+–) 15.bc6 Qc6+=) 14...Qe6 (14...Rac8 15.Nd5 Nd5 16.Bc4=) 15.Nd5= cd5 (15...Qd5?? 16.Bc4+–) 16.Qb3 (16.Rc1 Rac8=) 16...Rac8 17.Rac1 Qd6 18.f3 Qb4 19.Qb4 Bb4 Black fights for the Initiative 20.Nb3 Nb6 21.Nc5 (21.a5 Nc4 22.Bc3–/+) 21...Bd2–/+ 22.Ra1 (22.Kf2 Bc1 23.Rc1 Nc4 24.Bc4 dc4 25.Nb7 ef3 26.gf3 Nd5+=) 22...Be3–+ 23.Kh1 Rf7 24.Rac1? Bc1–+ (25.Rc1 Re7–+) 0–1. Franek,Mieczyslaw – Sokolik,Bogdan, corr 1. AMM Poland, 1991.

11.Nc4 Qe6

12.Nd5 cd5 13.Na5 b6= 14.Nb3 Bd6 (14...Ngf6 15.Ba6=) 15.Rc1 (15.Ba6 Ngf6=) 15...Ne7 (15...Ngf6 16.Qd2=) 16.g3 (16.Qh5 Ng6=) 16...0–0 (16...a6 17.Bg2=) 17.Ba6 Rad8 18.Qd2 Nb8 (18...Ng6 19.h3=) 19.Be2 Rc8 20.0–0 Rc1 (20...Nd7 21.Rc8 Rc8 22.b5=) 21.Rc1 g5 (21...Nd7 22.Rc2=) 22.f4+= gf4 (22...ef3 23.Bf3 f4 24.gf4 gf4 25.Re1+=) 23.gf4 (23.ef4 a6+=) 23...Rf7= 24.Kh1 Rg7 25.Rg1 Rg1 26.Kg1 Qg6 27.Kh1 Nd7 28.Qe1 (28.Bb5 Nf6=) 28...Nf6 (28...Kf7 29.Qd1 Nf6 30.Nd2=) 29.Bc1 (29.h3 Nc6=) 29...Kf8 30.b5 (30.Bb5 Qh5 31.Nd2 Kg7=) 30...Qh6 (30...Ke8 31.Bb2=) 31.a4 (31.Qg3 Ke8=) 31...Ng6 (31...Qh3 32.Bf1 Qf3 33.Bg2=) 32.Na1 (32.a5 Ke8=) 32...Ng4 (32...Ke8 33.Nc2=) 33.Qg1 (33.Qg3 Qh4=) 33...Qh4 34.Bg4 (34.Bd2!?=) 34...fg4+= 35.Qg3 Qg3 (35...Ke7 36.Nc2=) 36.hg3 Ne7 (36...h5 37.Kg2+=) 37.Nc2 Nf5 38.Kg2 Ke8 39.Bd2 Kd7 (39...Kf7 40.Bb4+=) 40.Kf2 (40.Bb4 Bb4 41.Nb4 Ne3 42.Kf2 Nd1 43.Ke2 Nc3 44.Kd2 Nb1 45.Kc2 Na3 46.Kb3 Nc4 47.Nd5 e3=) 40...h5 41.Be1 (41.Bb4 Bc7=) 41...Be7 42.Ke2 Kc8 43.Kf1 Kb7 (43...Kd8 44.Kf2+=) 44.Kf2 (44.Kg2 Kc7+=) 44...a5 (44...h4 45.gh4 Bh4 46.Ke2 Be1 47.Ke1+=) 45.ba6 Ka6 46.Bb4 b5 47.ab5 Kb5 48.Be7 Ne7 49.Ne1 (49.Na3 Kc6+=) 49...Kc6 (49...Nf5 50.Ng2+=) 50.Ng2 (50.Nc2 Nf5+=) 50...Kd6 (50...Nf5 51.Ke1+=) 51.Nh4 (51.Ne1 Ke6+=) 51...Ke6 52.Ke2 Kf6 53.Kf2 Nc6 (53...Kf7 54.Ke2+=) 54.Ng2 Nb4 55.Ke2 Nd3 (55...Nc2 56.Kd2 Na3 57.Ke2+=) 56.Nh4 (56.Ne1 Nc1 57.Kd1 Na2=) 56...Nb2+= 57.Ng2 Nc4 58.Nh4 Nd6 59.Kf2 Nc4 (59...Kg7 60.f5+=) 60.Ke2= ½–½. Koerner,Helmut (1945) – Poppner,Dietmar (2160), Lichtenrader Autumn, 2005.

12.Nd5 cd5 13.Ne5 a6 +=.

12.Nd5 cd5 13.Ne5 Bd6 14.Bb5 Ngf6 15.0–0 (15.Qa4 a6 16.Rc1 Rd8 17.Nd7 Nd7=) 15...0–0 (15...a6 16.Qa4+=) 16.Nd7 Nd7 17.Rc1 (17.Qb3 Nf6=) 17...f4 18.Qb3 (18.f3 Nf6=) 18...Nb6 19.ef4 Rf4 (19...Bf4 20.Rc5=+) 20.a4 (20.f3 ef3 21.Rf3 Raf8=) 20...Raf8 (20...Rf3! 21.Qc2 Qh6–/+) 21.a5= Rh4 22.h3 (22.ab6?? Bh2 23.Kh1 Bg3 24.Kg1 Rh1 25.Kh1 Qh6 26.Kg1 Qh2) 22...Rf3 23.ab6 (23.gf3 Qg6) 23...Rb3 24.ba7 Bh2 (24...Rb2?! 25.a8Q Bf8 26.Rc8=+) 25.Kh1 (25.Kh2 Rbh3 Demolition of pawn structure) 25...Rbh3! 26.gh3 Qh3 (27.Rc8 Kf7 28.Rf8 Kf8 29.Be2 Be5 30.Kg1 Qh2#) 0–1. Buczinski,Henryk – Mierzynski,Jaroslaw, corr Poland, 1993.

12.Nd5 cd5 13.Ne5 Ngf6 14.Qa4 Be7 (14...Bd6 15.Bb5+=) 15.Rc1+= Qd6 16.Bb5 a6 17.0–0 (17.Bc6 bc6 18.Rc6+=) 17...Rd8+= 18.Be2 0–0 19.Rc2 Rc8 (19...b5 20.Qb3 Rc8 21.Rfc1 Rc2 22.Rc2+=) 20.Rfc1 Rc2 21.Qc2 Nb8 (21...b5 22.Qc7 Rd8 23.Rc6 Qc7 24.Rc7+=) 22.Qc7+/– b5 23.Qb7 Bd8 (23...Re8!?+/–) 24.Rc8+– Be7 25.Nc6 Nfd7 26.Ne7 Qe7 27.Qd5 The passed pawn on d4 quickly leads to threats 27...Qf7 28.Qf7 (28.Rf8 Nf8 29.Qf7 Kf7+–) 28...Kf7+/– 29.Rc1 g6 (29...Rd8 30.f3+–) 30.Bd1 (30.d5 Ke7 31.Bd1 Kd6+/–) 30...Ke7 31.f3 ef3 (31...Nf6 32.Bb3+–) 32.gf3 Kd6 (32...Nf6 33.Bb3+–) 33.e4 fe4 34.fe4 h5 (34...Ke7 35.e5 Nb6 36.Rc7 N8d7 37.Bc1+–) 35.e5 Ke7 36.d5 Kd8 (36...Nb6 37.Rc7 N8d7 38.e6+–) 37.e6 (37...Ke7 38.ed7+–) 1–0. Buczinski,Henryk – Weber,Krzysztof, corr 2. AMM Poland, 1993.

12.Nd5 cd5 13.Ne5 Ngf6 14.Bb5 Bd6 15.Nd7 Nd7 16.Qa4 a6 17.Rc1 Ke7 (17...Rd8 18.Be2=) 18.Bd7 (18.Be2 Rhc8=) 18...Qd7 19.Qd7 (19.Qd1 Rac8=) 19...Kd7=+ 20.0–0 Rac8 21.f3 Rc1 22.Rc1 Rc8 23.fe4 (23.Rc8 Kc8 24.h4 Kd7=+) 23...Rc1–/+ 24.Bc1 fe4 25.Kf2 (25.h4!?–/+) 25...Kc6 (< 25...Bh2 26.g3=) 26.h3 Kb5 27.Ke2 a5 28.ba5 Ka5 29.Kd2 Ka4 30.Kc2 Ba3 31.Bd2 Bb4 32.Bc1 Be1 33.Kd1 (33.g4 b5–+) 33...Bf2 (33...Bg3 34.Kc2–+) 34.Ke2 (34.g4 b5–+) 34...Bg3 35.Bd2 Kb3 36.Kd1 Kc4 0–1. Thystrup,Preben – Wolszczak, corr 3GMM–26, 1996.

7.Nfd2 Be7

8.c4 c6 9.Nc3 a6 10.Na4 Nd7 11.Nc5 Nc5 12.dc5 Qd7 13.cd5 Bd5 (< 13...Qd5 14.Bc4 Qf5 15.Be6 Qe6 16.Qc2+/–) 14.Bc4 Qf5 (14...Bc4 15.Nc4 Qe6 16.Na5+=) 15.Qc2 Nh6 16.Bd5 cd5 17.c6 (17.Qa4 Qd7 18.Qd7 Kd7+=) 17...bc6 (17...Rc8 18.cb7 Rc2 19.b8Q Rc8 20.Qg3=+) 18.Qc6 Kf7 19.Bd4 Rhc8 20.Qb7 Rcb8 21.Qc6 Rc8 22.Qa4 Qe6 23.Nb3 Qc6 24.Qc6 Rc6 25.Bc5 Ng4 26.Be7 (26.Rd1 Rd8=) 26...Ke7 27.Nc5 Ne5 28.Kd2 Rac8 29.Rhc1 Nc4 (29...f5 30.Rd1=+) 30.Kc3= Ne5 31.Kd4 Ng4 (31...Rd6 32.h3=) 32.Rc2 (< 32.Kd5 Nf2 33.Rc3 Rd6 34.Kc4 Rd2=+) 32...Rd6 (< 32...Nh2 33.Rh1 (33.Kd5?! f5+=) 33...Ng4 34.Rh7+/–) 33.a4 Ne5 (< 33...Nh2 34.Rh1 Ng4 35.Rh7+=) 34.Rac1 Nc6 Black launches an attack 35.Kc3 a5 36.ba5 Na5 37.Kb4 Nc4 38.a5 Rdc6 39.Nb3 (better is 39.Ne4!? Ne5 40.Nc5 Nd3 41.Nd3 Rc2 42.Rc2 Rc2 43.a6=) 39...Na5–/+ 40.Rc6 (40.Nd4 Rc2 41.Rc2 Nc4–/+) 40...Nc6 (40...Rc6? 41.Ka5 Rc1 42.Nc1+–) 41.Kc5 Na5 42.Kb5 Nc4 43.Kb4 Kd6 44.Nd4 Ke5 (44...Rb8 45.Kc3–/+) 45.Rc2 (better is 45.Ra1!? Rc7 46.Ra6=+) 45...f5–+ 46.g3 g5 47.Ne2 (47.h3 f4 48.Rc3 f3–+) 47...Rb8 48.Kc3 Na3 (48...Rb1 49.Ra2–+) ½–½. Kozun,Piotr (1800) – Hoffmann,Piotr (2000), corr 1. AMM Poland, 1992.

8.c4 c6 9.cd5 cd5 (worse is 9...Qd5 10.Nc3 Qd8 11.Nde4+–) 10.Nb3 f5 11.Nc5 Bc8 12.Qc2 Nc6 13.Nc3 Nf6 14.Be2 0–0 15.0–0 f4 16.Rac1 Rb8 17.Qb3 Kh8 18.Qd1 b6 (18...a6 19.b5 Na7 20.f3 ef3 21.Rf3 fe3 22.Re3 ab5 A) 23.Bb5 A1) 23...Nb5?! 24.Nb5 Qf4 25.Qf3= (25.Re7 Ng4 26.Qf3 Qh2 27.Kf1 Rf3 28.Ke1 Re3 29.Kd1 Qg2 30.Re8 Re8 31.Ne6 Ne3 32.Ke1 Re6 33.Rc8 Rc8 34.Bc3 Qf1 35.Kd2 Qd1); A2) 23...Ng4 24.Rg3 Bg5 25.Rg4 Be3 26.Kh1 Bg4–+; B) 23.Bf3=) 19.Nb5+= Qd8 20.Nb3 (20.Ne4 Ne4 21.Rc6 fe3 22.fe3 a5+=) 20...f3 21.gf3 Bh3 22.Re1 ef3 23.Bf3 (worse is 23.Rc6 Qd7 24.Bf3 Qc6–/+) 23...Ne4 24.Be4 de4 25.d5 (25.Kh1 Rf2 26.Rc6 Bg2 27.Kg1–+) 25...Bb4!–+ 26.Qh5 (26.ab4 Qg5 Mate attack) 26...Be1 27.Re1 Na5 28.Nd2 Bf5 29.Kh1 (29.Qh6 Qe7–+) 29...Rb7 30.Rg1 Qd5 31.Qg5 Rg8 (31...Rff7!? 32.Nd4 Kg8 33.Rc1–+) 32.Nd4 Rf7 33.Bc3 h6 34.Qh5 Kh7 35.Nf5 Qf5 36.Qf5 Rf5 37.Ne4 Nc4 38.a4 a6 39.Bd4 b5 40.ab5 ab5 41.f4 Rf7 42.Kg2 Re8 43.Kf3 Rfe7 (43...Rc8!? 44.h3–+) 44.Nc3 Re3–+ (44...Re3 45.Kf2 R3e7 46.Nb5 Rf7–+) 0–1. Van Rooijen,Peter (1700) – Retamoza,Francisco (2135), CFriend SI–2004–0–00038 email, 2005.

7.Nfd2 Ne7

8.c4 c6 9.Nc3 a6 10.cd5 cd5 11.Nb3 b6 12.b5 a5 13.a4 Nf5 14.Qd2 Nd7 15.Ba3 Qc7 16.Bf8 Nf8 0–1. luminarydebris (1620) – ctrotter (2470), net–chess.com, 2011.

8.c4 c6 9.Nc3 Nd7 10.Rc1 f5 11.c5 Qc7 12.g3 g6 13.b5 Bg7 14.Qb3 0–0 15.Bh3 Bf7 16.Ba1 (16.Qb4 a5 17.Qa4 b6=) 16...g5 (16...Nc5 17.dc5 d4 18.Nc4 dc3 19.Bc3 Bc3 20.Rc3–/+) 17.Rg1 (17.0–0 g4 18.Bg2 Nc5 19.dc5 d4=) 17...Kh8 18.Nf1 Bg6 19.Ne2 Bh5 20.g4 fg4 21.Bg4 Bg4 22.Rg4 h6 23.Rg2 Ng6 24.Nd2 Nh4 25.Rg3 Nf6 26.Ng1 Nh5 27.Nf1? (better is 27.bc6 bc6 28.Rh3–+) 27...Ng3–+ 28.Ng3 Rf7 29.Rc2 Raf8 30.b6 ab6 31.cb6 Qd7 32.Re2 Nf3 33.Nf3 Rf3 34.Nf1 c5! 35.Nd2 (35.dc5 Ba1 Pinning (35...Ba1 Deflection)) 35...Rh3 36.Qc2 (36.Nf1 c4 37.Qb2 Qa4–+) 36...cd4 (36...Rh2 37.Nb3 Qg4 38.Nc1 Rff2 39.Rf2 Qg1 40.Rf1 Qg3 41.Qf2 Rf2 42.Rf2 Qe3 43.Ne2 Qa3 44.Bc3 cd4 45.Bd2–+) 37.Bd4 Bd4 (37...Rh2?! 38.Nf1 Rg2 39.Qc7–+) 38.ed4 Ra3 39.Qb2 Rh3 (39...Qa4 40.Nb1 Rb3 41.Qc2–+) 40.Qb4 (40.Nf1 Qa4 41.Re3 Re3 42.Ne3 Rf6–+) 40...Ra8 41.Nb3 (41.Qb1–+) 41...Rh2 42.Re3 (42.Nc1 Rh1 43.Kd2 Ra1–+) 42...Rh1 43.Kd2 Ra2 (better is 43...Qf5 44.Qd6 Qf2 45.Re2 Ra2 46.Kc3 Re2 47.Qb8 Kg7 48.Qb7 Qf7 49.Qf7 Kf7 50.Nc5–+) 44.Kc3 Rf2 45.Qc5 Rb1 (45...Qa4 46.Qc8 Kg7 47.Qc7 Kg6 48.Qd6 Kh5 49.Qg6 Kg6 50.Re2 Re2 51.Nd2 Qa3 52.Nb3 Rc1) 46.Qc7 (46.Kb4 Ra2 47.Qb5 Qb5 48.Kb5 Ra3–+) 46...Rf7 (46...Rb3 47.Kb3 Qb5 48.Ka3 Qb2 49.Ka4 Qd4 50.Ka3 Qe3 51.Ka4 Ra2 52.Kb5 Rb2 53.Ka4 Qb3 54.Ka5 Ra2) 47.Qe5 Kh7 48.Nc5 (48.Kb4 Qc6 49.Ka3 Qb5–+) 48...Qc6 (48...Qb5 49.Qh8 Kh8 50.Re4 Qb2 51.Kd3 Rf3 52.Re3 Rd1) 49.Kc2 (49.Qe6 Qe6 50.Ne6 Rf3–+) 49...Rb6 (49...Qb5 50.Nb3 Rb3 51.Qg7 Kg7 52.Rf3 Rb1 53.Rf7 Kf7 54.Kd2 Qd3) 50.Kc3 (50.Qg3 Qb5 51.Nb3 Qc4 52.Rc3 Rb3 53.Rc4 Rg3–+) 50...Rb1 (50...Qb5 51.Qg7 Kg7 52.Re4 Qc4 53.Kd2 Rf2 54.Re2 Re2 55.Kd1 Rb1) 51.Rh3 Rbf1 (51...Rbf1 52.Qe6 Qe6 53.Ne6 R1f3 54.Kb4 Rh3–+) 0–1. Sturc,Gustav (2045) – Sahidi,Samir (1835), Banska Stiavnica SVK, V4 Open, 2013.

7.Nfd2 f5

8.Nb3 b6 9.N1d2 Nf6 10.c4 c6 11.b5 (11.Be2 Be7=) 11...Be7 12.a4 0–0 13.c5 Qc7 14.Rc1 Ng4 15.g3 f4 (15...Nf6 16.bc6 Nc6 17.Bb5=+) 16.ef4 (16.gf4 Bh4 17.Ke2 Nf2–+ (17...Bf2 18.cb6 Qb6 19.Rc3–+)) 16...Rf4?? (better is 16...Nf6=) 17.Bh3 (17.gf4 Bh4 18.bc6 Nf2–+) 17...e3? (better is 17...Nf2 18.Be6 Kh8+/–) 18.fe3+– (18.gf4?! ed2 19.Qd2 Bf5+–) 18...Rf6 (18...Ne3 19.Be6 (19.gf4?! Bh3 20.cb6 ab6=) 19...Kh8 20.Qe2+–) 19.Bg4 Qd7 20.Be6 Qe6 21.Qe2 bc5 (21...Nd7 22.bc6 Qc6 23.e4+–) 22.Nc5 Bc5 23.dc5 Rf7 24.Nf3 (24.e4 Re7+–) 24...Qe4 25.0–0 (25.Ng5 Qh1 26.Kd2 Qc1 27.Kc1 Rf5+–) 25...Qa4 26.Ne5 Re7 (26...Rf6+–) 27.Qf3 (27...Nd7 28.Nc6+–) 1–0. Sundin,Thommy – Larsson,A, Umea SWE, 1988.

8.Nb3 Nd7 9.Nc3 c6 10.Ne2 Ngf6 11.Nc5 White gets deadly initiative 11...Nc5 12.dc5 Qc7 (12...Qe7 13.Nd4=) 13.Bf6+= gf6 14.Nd4 Bd7 (14...Qe5 15.Ne6 Qe6 16.Qh5 Ke7 17.Rb1=) 15.Qh5 Kd8 16.c4 (16.Nf5? Qe5 17.Rd1 Bf5–+ (17...Qf5?! 18.Qf5 Bf5 19.c4–+)) 16...f4 (16...Qe5 17.cd5 Qd5 18.Rd1+/–) 17.Qf7 Be7? (better is 17...Qe5 18.cd5 cd5+/–) 18.cd5+– cd5 19.Ba6! ba6?? (better is 19...fe3 20.Qd5 ef2 21.Kf2 e3 22.Kg1 Qe5 23.Bb7 Rc8+–) 20.Qd5 A pinning theme 20...Qc6 (20...Ke8 21.Qa8 Bc8 22.Qe4 fe3 23.fe3 Bb7+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

8.c4 c6

9.b5 Nf6 10.cd5 cd5 (worse is 10...Qd5 11.Nc3 Qd6 12.Nc4+=) 11.a4 Be7 12.Be2 0–0 13.0–0 Qd8 14.Nb3 Nbd7 15.Ba3 Ba3 16.Na3 Rc8 17.Rc1 Qe7 18.Nb1 Qb4 19.N3d2 Rc1 20.Qc1 Qa4 21.Nc3 Qa5 22.Qb2 Rc8 23.Rc1 Qc7 24.Nb3 Qb8 25.Na4 Bf7 26.Nbc5 Nc5 27.dc5 f4 28.ef4 (better is 28.Qd4!?=) 28...Qf4–/+ 29.g3 White prepares the advance b6 29...Qf5 30.b6 ab6 31.cb6 Ng4 (31...Rc1!? 32.Qc1 d4 33.Nc5–+) 32.Rc8–/+ Qc8 33.Bg4 Qg4 34.Qd4 h5 35.Nc3 Qg5 36.Qc5 Qc1 (better is 36...Qd2!?–/+) 37.Kg2= Be6 38.Qe7 Bg4 (worse is 38...Qc3 39.Qe6 Kh7 40.Qf5 Kh6 41.Qd5 Qf3 42.Kg1=) 39.Qe8 (39.Qb7 Bf3 40.Kh3 Qc3 41.Qd5 Kh8–/+) 39...Kh7–/+ 40.Qe5?? (better is 40.Nd5 Bf3 41.Kh3–/+) 40...Qa1 (better is 40...h4 41.gh4 Bf3 42.Kh3 Qf1 43.Kg3 Qg2 44.Kf4 Qh2 45.Kf5 Bg4 46.Kg4 Qe5–+) 41.Qd5 (41.Qc7–+) 41...Qc3 (better is 41...Bf3 42.Kh3 Qc3–+) 42.Qe4–/+ Kh6 43.Qf4? (better is 43.Qb7 Qc5 44.h4–/+) 43...Kg6–+ 44.Qe4 Kf6?? (44...Bf5 45.Qe8 Kh6 46.Qh8 Bh7 47.Qe8–+) 45.Qf4? (better is 45.Qb7 Qc8 46.Qe4 Bh3 47.Kf3 Qc3 48.Qe3 Bg4 49.Ke4 Qc6 50.Kd3 Bf5 51.Kd2 Qd5 52.Ke2 Qc4 53.Kd2 Qa2 54.Ke1 Qb1 55.Ke2 Qc2 56.Ke1–/+) 45...Ke6 46.Qe4 Kd6 47.Qg6? (47.Qb7 Qc6 48.Qc6 Kc6–+) 47...Qf6 48.Qd3 Kc5 49.Qb3 Be6 50.Qe3 Qd4 (better is 50...Kb5–+) 51.Qe6= Qd5 52.Qd5 Kd5 53.Kf3 Kc6 54.Ke4 Kb6 55.Kd4 Ka5 56.Kc3 Ka4 57.Kb2? (better is 57.f4!?=) 57...Kb4 58.Kc2 Kc4 59.f3? (59.f4 Kd4 60.Kd2 Ke4–+) 59...Kd4 (59...g5 60.Kd2 b5–+) 60.Kd2?? (60.Kb3 Ke3 61.f4–+) 60...g5 61.h3?? (61.Ke2 b5 62.Kd2–+) 61...h4 62.f4 (62.gh4 gh4 63.Ke2–+) 62...hg3 63.Ke2 gf4 64.h4 Ke5 (64...Ke5 65.h5 Kf6–+) 0–1. tflk (1735) – onny555 (1830), gameknot.com, 2014.

9.g3 Nf6 10.Nc3 a6 11.c5 Qc7 12.a4 White plans b5 (12.Ne2 Nbd7=) 12...Be7 13.b5 (13.Bg2 b6=) 13...0–0 14.b6 Qc8 (14...Qd7 15.a5=) 15.Nb3 g5 (15...Nbd7 16.Na5=) 16.Qd2 (16.Na5 Nbd7+=) 16...Nh5 (16...Nbd7+=) 17.0–0–0 (17.Be2!? Nf6 18.Na5+=) 17...Nd7= 18.Be2 (18.Na5 Ndf6=) 18...Ng7 (18...Bf7 19.Na5=) 19.Rdg1 (19.Na5 Bf7=) 19...Rf7 (19...Bf7 20.Na5=) 20.Bd1 (20.Na5 Nf6=) 20...Nf8 (20...Nf6 21.Na5=) 21.Ne2 (21.Kb1 g4+=) 21...Ng6 (21...Rf6 22.Nc3=) 22.h4 g4 (22...f4 23.gf4 Nh4 24.Ng3= (worse is 24.fg5 Nf3 25.Qc3 Ng1 26.Rg1 Rf2–+)) 23.h5+= Nf8 (23...Nh8 24.Nf4+=) 24.h6+/– Ne8 25.Na5 (25.Nf4 Ng6 26.Ng2 Rf6+=) 25...Ng6 26.Kb1 (26.Kc2 Nf6+/–) 26...Rb8 27.Nc1 (27.Rg2 Nf6+/–) 27...Nf6 (27...Rf6 28.Ne2=) 28.Be2 (28.Rg2 Rf8+=) 28...Bd7+= 29.Na2 (29.Rg2 Nf8+=) 29...Bf8 (29...Nf8 30.Nb4+=) 30.Nb4 (30.Bc3 Nh8 31.Nb4 Re7=) 30...Be8 31.Qc3 (31.Bc3 Qe6+=) 31...Kh8 (31...Qe6 32.Kc2+=) 32.Rh2+/– Kg8 33.Ba3 (33.Rgh1 Qe6+/–) 33...Kh8 (33...Qe6 34.Kc2+=) 34.Ka2 (34.Qb3 Qe6+/–) 34...Kg8 (34...Qe6 35.Rb1+=) 35.Rb1 (35.Qc2 Qe6+=) 35...Kh8 (35...Qe6 36.Qc2+=) 36.Qc1 (36.Qc2 Qe6+=) 36...Ng8+= 37.Qh1 Nf6 (37...Rf6 38.Qf1 Nh6 39.Ba6+–) 38.Qf1 Ng8 (38...Kg8 39.Ba6 ba6 40.Na6=) 39.Ba6 ba6 40.Na6 (40.Qa6 Qa6 (40...Bh6?? 41.Qc8 Rc8 42.b7 Rb7 43.Nb7+–) 41.Na6 Ra8+/–) 40...Rbb7? (better is 40...Ra8 41.b7 Rb7 42.Rb7 Be7=) 41.Nb7+– (41.Nb7 Rb7 42.a5+–) 1–0. Kesmaecker,Philippe (2275) – Nielsen,Henning (2065), NATO–chT, 1999.

9.Nc3 Nf6

10.Qa4 Nbd7 11.cd5 Nb6 12.Nc4 (12.Qc2 Nfd5 (12...cd5? 13.Nb5 Qb8 14.Nc7 Kf7 15.Na8 Qa8 16.Nb3+–; 12...Bd5?! 13.Nd5 Nfd5 14.Nc4 Nc4 15.Bc4=) 13.Nb3 Nc3 14.Bc3 Qc7=) 12...Nc4 13.Bc4 Nd5 14.Nd5 Bd5 15.b5 Bc4 16.Qc4 Qd5 17.Rc1 Qc4 18.Rc4 cb5 (18...cb5 19.Rc7 Rb8+=). Kroll,Ove – Hansen,Carsten, corr DEN–ch, 1980.

10.Qb3 Be7 11.b5 0–0 12.a4 Qd7 13.Ba3 Ba3 14.Qa3 f4 15.bc6 Nc6 16.cd5 fe3 (16...Bd5 17.Nd5 Nd5 18.Bc4= (worse is 18.Ne4 fe3 19.fe3 Rae8–/+)) 17.fe3 Nd5 18.Nd5 (18.Nce4!? Ncb4 19.Rc1=) 18...Bd5+= 19.Qc5 Kh8 20.Bc4 Bc4 21.Qc4 Qg4 22.Qe2 Qh4 23.g3 Qe7 24.Rf1 (24.Qg4!?+=) 24...Nb4–/+ 25.Kd1 Nd3 26.Qg2 (better is 26.Rb1!?–/+) 26...Rf1–+ 27.Qf1 Rf8 28.Qg2 (28.Qg1 Qb4 29.Ke2 Rf2 30.Qf2 Nf2 31.Rb1–+) 28...Rf2 29.Rc1 (29.Qf2 Nf2 30.Ke2–+) 29...Qd7 (29...Rg2?? 30.Rc8 Qd8 31.Rd8) 30.Qe4 Qa4 (30...Qa4 31.Rc2 Qa1 32.Nb1 Qb1 33.Rc1 Qc1) 0–1. Slabek,Grzegorz (2055) – Barski,Radoslaw (2245), Dobczyce Poland, 2013.

10.Qc2 (--> 6.d4 e4 7.Nfd2 f5 8.c4 Nf6 9.Nc3 c6 10.Qc2).

10.cd5 cd5 11.Qb3 (11.Rc1 Nc6+=) 11...Be7= 12.Rc1 0–0?? (better is 12...Nc6=) 13.Nb5+– Qb6 14.Nc7 Nbd7 15.Na8 Ra8 16.Be2 (16.Be2 Bd6 17.0–0+–) 1–0. Rosner,Dirk – Busch,L, corr D/½84E, 1994.

8.c4 Nf6

9.Nc3 Be7 10.c5 Qd8=.

9.cd5 Nd5 10.Nc4 Qd8 11.Nc3 Bd6 12.Nd5 Bd5 13.Nd6 Qd6 14.f4. W Labahn.

9.Nc3 c6

10.Qc2 Qd8 11.Rc1 Be7 12.b5 0–0 13.cd5 cd5 14.Ne2 Bd6 15.g3 Nbd7 16.Nf4 Bf7 17.h4 Rc8 18.Qd1 (18.Qb3 Rc1 19.Bc1 Qc7–/+) 18...Rc1 19.Qc1 Qb8 (19...Nb6 20.Qc2–/+) 20.Bh3 g6 21.h5 g5 22.Bf5 (better is 22.Ne2!? g4 23.Bf1–/+) 22...gf4–+ 23.gf4 Nb6 24.Rg1 Kh8 25.h6 Bf4! 26.Ne4 (26.ef4 Qf4) 26...Ne4 (26...Bh2 27.Nf6 Bg1 28.Nh7 Bf2 29.Kf1–+) 27.Be4 Bh6 (27...de4 28.ef4 Bd5 29.Bc3–+) 28.Qc2 Rg8 29.Rh1 Bg6 (29...de4 30.d5 Rg7 31.Rh6 Bd5 32.Qd1=) 30.Bg6 Rg6 31.Qf5 Qf8 32.Qe5 Bg7 33.Qc7 Nc4 34.Bc1 Qf3 (better is 34...Qf5 35.Qb8 Bf8–+) 35.Rf1 (35.Qh2 h6 36.Qh4–+) 35...Bd4! 36.ed4 (36.Qc8 Rg8 37.Qg8 Kg8 38.ed4 Qe4 39.Kd1 Qd4 40.Ke2 Qe4 41.Kd1 Qd3 42.Ke1–+) 36…Re6 (36...Re6 37.Qe5 Ne5 38.de5 Re5 39.Be3 d4 40.Kd2 de3 41.fe3 Rd5 42.Kc2 Qe2 43.Kb1 Rb5 44.Kc1 Qb2 45.Kd1 Rd5 46.Ke1 Qd2#) 0–1. Ziethen,H – Heinsohn, corr DDR–chJ U26, 1985.

10.Qc2 Be7 11.cd5 Nd5 (11...cd5? 12.Nb5 Qc6 13.Nc7 Kf7 14.Rc1+–) 12.g4 (12.Nc4 Qc7=) 12...g6 13.gf5 gf5 14.Nd5 Bd5 (14...Qd5?? 15.Bc4 Qd7 16.Be6 Qe6 17.d5 Qd5 18.Bh8+–) 15.Be2 (15.Nc4 Qe6=) 15...Nd7 16.b5 (16.Bh5 Kd8+=) 16...cb5 17.Bb5 a6 18.Be2 h5 (18...Nb6 19.Qd1+=) 19.Rc1 h4 (19...b5 20.a4 Rb8 21.ab5 ab5 22.Ra1+=) 20.f3 h3 21.fe4 Bh4 (21...fe4 22.Ne4 Qe6 23.Nc5 Qe3 24.Qg6 Kd8 25.Rc3=) 22.Kd1= fe4 23.Ne4 (23.Bg4 Nf6 24.Bf5 Bg5 25.Ne4 Ne4 26.Be4 Be3 27.Bd5 Qd5+–) 23...Qb6 (23...Qe6 24.Nc5 Nc5 25.Bc4 Bf3 26.Kd2 Ne4 27.Kd3 Nf2 28.Kd2–+) 24.Qb1 (better is 24.Bc4 Bc4 25.Qc4+/–) 24...Kd8 25.Bd3 Nf6 26.Nf6 (better is 26.Rc3!?+=) 26...Bh1–/+ 27.Ng4 Bf3 28.Be2 Qb3 (28...Be2 29.Ke2 Rg8 30.Kf3–+) 29.Qc2 Be2 30.Ke2 Qc2 (better is 30...Qb5!? 31.Kd1 Rg8 32.Qc7 Ke8 33.Qe5 Qe5 34.Ne5 Rg1 35.Kc2 Rc8 36.Kd2 Rcc1 37.Bc1 Rg2 38.Kd3 Rh2–+) 31.Rc2+= Rc8 (31...Rg8 32.Kf3+=) 32.Rc8= Kc8 33.d5 Re8 (33...Rg8 34.Kf3=) 34.Be5 b5 (34...Be7 35.a4=) 35.Kf3 (35.e4 Kd7=) 35...a5 (35...Be7 36.Bb2+=) 36.Bc3 (36.e4 Rf8 37.Ke2 b4 38.ab4 ab4+=) 36...a4 (36...Rf8!? 37.Ke4 Be7 38.Ba5 Ba3–/+) 37.Bb4= Kd7 (37...Be7 38.d6 Bg5 39.e4=) 38.e4+= Be7 39.Ne5 Kc7 40.Be7 Re7 41.Nc6 Rd7 (41...Rf7 42.Kg4=) 42.Kg3 (42.Nd4 Kb6 43.Ke3 Rc7+=) 42...Rd6 (42...Kd6 43.Kf3–/+) 43.Nd4 (better is 43.Nb4=) 43...Rh6 (better is 43...Rb6!? 44.Nc2 Rg6 45.Kh3 Kd6+=) 44.Nb5+/– Kb6 (44...Kd7 45.Nd4+/–) 45.Nc3 (45.Nd4 Rg6 46.Kh3 Rg1+/–) 45...Ka5 46.e5 Rh5 (46...Rb6 47.Kf4 (47.Kh3 Rb3–/+) 47...Rb8 48.e6+–) 47.e6 Rh7 (47...Kb6 48.Kg4 Re5+–) 48.d6 Kb6 49.e7 Rh8 50.d7 (50.Na4?! Kc6=) 1–0. mtr – mahesh97, internet, 2009.

10.Be2 Nbd7 11.f3 (11.cd5 Nd5 12.Nc4 Qc7=) 11...ef3+= 12.Nf3 (12.gf3 dc4 13.Bc4 Bc4 14.Nc4 Qe6=) 12...dc4–/+ 13.0–0 Be7 14.Qc2 0–0 15.Na4 (15.Nh4 Nd5 16.Nd5 A) 16...Bd5? 17.Nf5 (17.Bc4?? Bh4 18.Bd3 Qh6–+) 17...Qe6 18.e4+– (18.Ne7?! Qe7 19.e4 Be4 20.Bc4 Bd5=); B) 16...Bh4?! 17.Nf4 b5 18.a4–/+; C) 16...Qd5–/+) 15...b5–+ 16.Nc5 Ng4 17.Qc3 (17.Bc1 Bd5 18.Nd7 Be4–+) 17...Bd5 (17...Nc5 18.dc5 Bf6 19.cd6 Bc3 20.Bc3 Ne3 21.Rfc1+–) 18.g3? (better is 18.Ne5 Nge5 19.e4–+) 18...Nc5 19.dc5 Qh6 20.Nh4 (20.h4–+) 20...Bf6 21.Qc1 (21.Qd2 Bb2 22.Bg4 Ba1 23.Nf5–+) 21...Bb2 22.Qb2 (22.Qd2 c3 23.Qd4–+) 22…Qe3 (22...Qe3 23.Rf2 Qf2#) 0–1. Murray,Findlay (1750) – Trokenheim,Marek (1815), FICGS, 2008.

10.Qc2 a6

11.Na4 dc4 12.Nb6 Ra7 13.Rc1 =.

11.Na4 Nbd7 12.Nc5 Nc5 13.dc5 Qc7 (13...Qd8=) 14.f4 (14.Bf6 gf6 15.cd5 Bd5+=) 14...ef3 (14...0–0–0 15.cd5 Nd5 16.Bc4=+) 15.gf3= f4 16.cd5 Nd5 17.Qe4 Qf7 (17...Qe7 18.Bd4 Ne3 19.Be3 fe3 20.Qe3 Qh4 21.Ke2 Qe7–/+) 18.Bh3+= Kd7 19.Be6 Qe6 20.Qe6 Ke6 21.e4 Ne3 22.Ke2 Rg8 (22...Rd8 23.Rhe1+=) 23.Rhg1 (23.Bd4 Nc2 24.Kd3 Na1 25.Ra1 Rd8–/+) 23...Rd8+= 24.Nb3 (24.Rae1 g5+=) 24...g5 25.Bc1 (25.Nd4 Ke7+=) 25...Nc4 (25...Nc2 26.Ra2 Nd4 27.Nd4 Rd4 28.Bf4 Be7+–) 26.h4 (26.Bf4 Bg7 27.Rac1 gf4 28.Rc4 Ke5+/–) 26...h6 (better is 26...Bg7 27.Ra2 Bf6=) 27.hg5+/– hg5 28.Bf4! Be7 (28...gf4 29.Rg8) 29.Bc1 (29.Bc7 Rd7 30.Bg3 Bf6+/–) 29...Bf6 30.Ra2 (30.Rb1 Ke5+/–) 30...Rh8 31.Rg2 Rh3 32.Be3 (32.Rc2 Ne5 33.Nd2 Nd3+/–) 32...g4 (32...Rh5!?+=) 33.Rg4+/– Rh2 34.Bf2 Ne5 35.Rg1 Bh4 (35...Nf3 36.Kf3 Rd3 37.Ke2 Rb3 38.Rg6+=) 36.Rf1+– Nd3 37.Ke3 Bf2 (37...Bg5 38.Ke2+/–) 38.Rff2 Rf2 39.Rf2 Nf2 40.Kf2 Rd3 41.Nc1 (better is 41.Na5!?+=) 41...Ra3 42.Kg3 (42.f4 Rh3=) 42...Rc3 43.Ne2 Rc4 44.Nf4 Kf6 (45.Kg4 Rb4–+) 0–1. Nordin,Nils – Blomstrand,Roger, corr SSKK 1–428, 1990.

11.c5 Qe7 +=.

11.Na4! Qd8

12.Nc5 Bc5 13.bc5 0–0 14.Be2 =.

12.Nc5 Bc8 13.Rc1 b6 14.Ncb3 =.

12.Nc5 Bc8 (12...Bc5 13.bc5 0–0 14.Be2=) 13.Rc1 (13.cd5 Nd5 14.Bc4 b6=) 13...Bd6 (13...b6 14.Ncb3=) 14.Be2 (14.cd5 Nd5 (14...cd5? 15.Nce4 fe4 16.Qc8+–) 15.Bc4 Bc7+=) 14...0–0 (14...b6 15.Ncb3 0–0 16.c5 bc5 17.Nc5=) 15.0–0 (15.cd5 Nd5 16.Nc4 b6 17.Nd6 Qd6=) 15...f4 (15...b6 16.Ncb3=) 16.cd5 cd5 17.Qb3 Kh8 18.f3 b6 19.fe4 (19.Na4 ef3 20.Bf3 fe3 21.Qe3 Ng4 22.Bg4 Rf1 23.Nf1 Bg4 24.Nb6 Ra7 25.Nd5 Rf7+–) 19...bc5 20.dc5 fe3 21.Qe3 Be7 22.ed5 (22.e5 Nfd7=) 22...Nd5 23.Qe4 (better is 23.Rf8 Qf8 24.Qf3=) 23...Nf6?? (better is 23...Rf1!? 24.Rf1 Bg5+=) 24.Qa8+/– Qd2 25.Bf6 Bf6 26.Bf3 (26.Bc4 Qe3 27.Kh1 Bg4+=) 26...Nd7 (26...Bd4 27.Kh1 Nd7 28.Bb7+–) 27.Kh1 (27.Qe4 Ne5 28.Rc2 Nf3 29.gf3 Qd7+=) 27...Ne5+= 28.Rcd1 (better is 28.Qd5 Nf3 29.Qf3+=) 28...Qe3+– 29.Bb7 Ng4? (better is 29...Qa3!? 30.Bc8 Qb4+–) 30.Bc8 Qe5 (30...Nf2 31.Rf2 Qf2 32.Qa6 Bb2+–) 31.g3 Qb2 32.Qg2 Qg2 33.Kg2 Ne3 34.Kh3 (34.Kf3 Nd1 35.Ba6 Bb2 36.Ke4 Nc3 37.Kd4 Ne2 38.Ke3 Rf1 39.Ke2–/+) 34...Rc8= 35.Rf6 ½–½. Sanchez,J – Roig Grau,Jesus, corr Maestros Cup, 1994.

12.Nc5 Bc8 13.Rc1 Be7 14.Be2 0–0 15.0–0 Bd6 16.f4 Ng4 (better is 16...b6!? 17.Na4 b5 18.cb5 ab5=) 17.Bg4+/– fg4 18.cd5 cd5 19.Qb3 Bc5 20.dc5 Kh8 (20...Bf5 21.Rfd1+/–) 21.Rcd1 Bf5 22.Nb1 (22.Nc4 g3 23.hg3 Bg4+–) 22...Be6 (22...Qe8 23.Rd5 g3 24.h3+/–) 23.Nc3+– Qe8 (23...g3 24.hg3 Qf6 25.Nd5 Bd5 26.Rd5+–) 24.Nd5 (better is 24.f5 Bd7+–) 24...Nd7? (better is 24...Nc6+–) 25.Qc3 Nf6 26.Nc7 Qf7 27.Na8 g3 (27...Ra8 28.Rd6 Ne8+–) 28.Nb6 gh2 29.Kh1 Nh5 (29...Kg8 30.f5 Ba2 31.Kh2+–) 30.Qe1 Qg6 (30...Qf5 31.Kh2 Qg4 32.Be5+–) 31.Kh2 Rf5 (31...Nf6 32.Qg3 Qf5 33.Bf6 gf6 34.Qh3 Qh3 35.gh3+–) 32.Nc8 (32.Rd8!? Bg8 33.Nc8 Rf7+–) 32...Nf6 33.Bf6 (33.Rd8!? Ng8+–) 33...gf6 (33...Qf6 34.Nd6 Rh5 35.Kg1+–) 34.Nd6 (34.Nd6 Rh5 35.Kg1+–) 1–0. Sokolski,Alexey – Villard, Kiev, 1955.

12.Nc5 Bc8 13.cd5 Nd5 14.Bc4 b6 =.

10.Qc2 Nbd7

11.Na4! Sokolski.

11.c5 Qc7 12.g3 Be7 13.Bg2 0–0 14.0–0 g5 (14...b6 15.Nb3=) 15.f3 (15.Qb3 b6=) 15...ef3 (15...b6 16.Ne2=) 16.Bf3 (16.Nf3 Ne4=) 16...Rae8 (16...b6 17.Be2 bc5 18.Rf5 Bf5 19.Qf5 cb4 20.Qg5 Kh8 21.ab4 Bb4 22.Rc1+=) 17.Bg2 Ne4 (17...Ng4 18.Rae1=) 18.Nde4 fe4 (18...de4 19.g4 f4 20.Be4+–) 19.Ne4 (19.Qb3 Bf6=) 19...de4 20.Be4 Bf6 (20...Nf6 21.Bh7 Kh8 22.Bg6=) 21.Bh7 Kh8 22.Bg6 Re7 (22...Ra8 23.Bf5 Bf5 24.Rf5+=) 23.e4+= Qd8 (23...g4 24.Bf5 Bg7 25.d5 cd5 26.Be6 Re6 27.Rf8 Nf8 28.ed5+=) 24.e5 Bg7 25.Rfe1 (25.b5!?+=) 25...Bd5= 26.Re2 (26.Rf1 Be6=) 26...g4 (26...Bh6 27.Be4 Nb8 28.Rae1=) 27.Rae1 Bf3 (27...Be6 28.Bc1 Nb8 29.Re4+=) 28.Rf2+= Nf6 29.h3 (29.Qd2 Nd5 30.Qg5 Kg8+/–) 29...Bh6= 30.Rh2 Kg7 (30...Qd5 31.Bf5 gh3 32.Rh3=) 31.Bf5 White intends e6 (31.ef6 Rf6 32.Qb1 Re1 (32...Rg6?! 33.d5 Kh7 34.d6 Re1 35.Qe1=) 33.Qe1 Kg6–+) 31...Nd5 (31...gh3 32.d5 cd5 (32...Nd5? 33.Rh3 Re6 34.Be6+–) 33.Rh3 d4+–) 32.hg4+– Be3?? (better is 32...Ne3 33.Qd3 Bg4+–) 33.Re3! Ne3 34.d5 Nc2 (34...Rf5 35.gf5 Qg8 36.f6 Kf8 37.fe7 Ke8 38.Rh8 Nc2 39.Rg8 Ke7 40.d6 Ke6 41.Rg7+–) 35.e6 Rf6 36.g5 (36.g5 Ree6 37.Be6 cd5 A) 38.gf6?! Kg6 39.Be5 Ne1+/– (39...Na3?? 40.f7 Qe7 41.Rh8 Qf7 42.Bf7 Kf7 43.Rh7 Ke6 44.Bh8+–); B) 38.Bf6 Qf6 39.gf6 Kf6 40.Bd5 Bd5 41.Rc2+–) 1–0. van Daatselaar,J B (2185) – Gouma,Ronald (2310), corr NBC Email, 2002.

11.cd5 cd5? 12.Nb5 Qb8 13.Nc7 Kf7 14.Na8 Qa8 15.Rc1 +–.

11.cd5 cd5? 12.Nb5 Qb8 13.Nc7 Kf7 14.Ne6?! Ke6 15.f3 Be7 +=.

11.cd5 Bd5?! 12.Rc1=.

11.cd5 Bd5 12.Nc4 Bc4 (12...Qe6 13.Na5 Rb8 14.Be2=) 13.Bc4+= Nb6 14.Bb3 Be7 15.b5 Rc8 16.bc6 Rc6 17.Qe2 a6 18.f3 (18.0–0 Nbd7=) 18...Qc7+= 19.Rc1 ef3 20.gf3 Nfd5 (20...Ba3!? 21.Ba3 Rc3+=) 21.Nd5= (worse is 21.Bd5 Nd5 22.Qd2 Nc3 23.Rc3 Rc3 24.Qc3 Qc3 25.Bc3 Ba3+=) 21...Rc1 22.Kd2 (22.Kf2 Nd5 23.Bc1 Nb6+=) 22...Rc2= 23.Kd3 Nd5 (23...Qc4! 24.Bc4 Re2 25.Ke2 Nc4 26.Ne7 Ke7= (26...Nb2? 27.Nf5 b5 28.Ng7 Kd7 29.Rb1+–)) 24.Qc2+= Qc2 (24...Qd7 25.Qc4 Nb6 26.Qf7 Kd8 27.Qg7 Qb5 28.Kc2+=) 25.Bc2+/– Kd7 26.Rg1 g6 27.Bb3 Kd6 28.e4 Nf4 29.Ke3 Nh3 30.e5 Kd7 31.Rd1 Bg5 32.Ke2 Re8 33.a4 b6 34.Kf1 Rc8 (better is 34...Bf4!?+/–) 35.d5 Be3 36.a5 (better is 36.e6 Kd6 37.Re1+–) 36...b5? (better is 36...Rb8+–) 37.e6 Kd6 38.Ba3 Bc5 39.Rc1 (39.Rc1 Ba3 40.Rc8+–) 1–0. Fajfr,Ladislav – Spodny,Josef, corr ch 14 CS, 1971.

11.cd5 Bd5?! 12.Be2 =.

11.cd5 Nd5 12.Nc4 Qc7 13.Ne4 fe4–/+ 14.Qe4 Kf7 15.f4 (15.Qf3 Kg8–/+) 15...N5f6 16.Qc2 Bd6 17.Bd3 Rhe8 18.0–0 Bc4 19.Bc4 Kf8 20.Rae1 Ne4 (20...Ne4 21.Rc1 Rad8–/+). Grund,Karl – Kuchta,Pavol, corr, 1968.

11.Be2 Be7 =.

7.Nfd2 Nh6

8.c4 Bg4 9.Qb3 c6 10.Nc3 +=.

8.h3 Nf5 9.g4 Nh4 10.c4 =.

8.h3 g6 9.Nb3 (9.c4 c6+=) 9...b6 (9...Nd7 10.c4+=) 10.Nc3 (10.c4 c6+=) 10...c6 11.Ne2 Bg7 (11...Nf5 12.Rc1=) 12.Nf4+= Bf7 13.Be2 0–0 14.h4 (14.c4 dc4 15.Nd2 b5 16.Ne4 Qe7+=) 14...Nf5 15.h5 (15.Qd2 Nd7=) 15...g5 16.Nh3 Nh6 (16...h6 17.Rc1=) 17.f4 (17.c4!?=) 17...ef3+= 18.Bf3 Qg3 Black plans g4 (18...Re8 19.Bc1+=) 19.Nf2+= g4 (better is 19...f5 20.Rh3 Qd6+=) 20.Kf1?? (better is 20.Bg4 Ng4 21.Qg4 Qe3 22.Qe2=) 20...gf3–+ 21.Rh3 (21.gf3 Nf5 22.Bc1 Be6–+) 21...fg2 (better is 21...Qg2 22.Ke1 Qg1 23.Kd2 Qf2 24.Kd3 Ng4 25.Qf3 Bh5–+) 22.Kg1 Qg5 23.Qf3 Nd7 24.Bc1 (24.Qg2 Qg2 25.Kg2 f5–+) 24...Qf5 (24...f5 25.Qg2 Qg2 26.Kg2–+) 25.Qg2 (25.Qf5 Nf5 26.Kg2 Rfe8–+) 25...Kh8 (25...Qc2 26.e4 Kh8 27.Bd2–+) 26.e4 de4 27.Ne4 Bd5 (27...Bh5 28.Ng3 Bf3 29.Nf5 Bg2 30.Rh6 Bh6 31.Bh6–+) 28.Bh6 (28.Nbd2 Rae8 29.Re3–+) 28...Bh6 29.Re1 (29.Ng3 Be3 30.Kh2 Bf4–+) 29...Rg8 30.Rg3 Rg3 (better is 30...Be4 31.Re4 Rg3 32.Qg3 Qe4 33.Kf2–+) 31.Ng3 Rg8 (better is 31...Qg4 32.Qh2 Rg8–+) 32.Nf5 Rg2 (32...Bg2? 33.Nh6 Bh3 34.Kh2+–) 33.Kf1 Bb3 1–0. Pauk,Jozef – Evans,Stanley, 66. LSS No Engine Cup Preliminary, 2012.

8.c4 c6

9.Nc3 a6 10.cd5 (10.c5 Qc7+=) 10...cd5 11.Qa4 White is in command 11...Kf7 12.Rc1 Nd7 13.Nb5 Qb6 14.Nc7 Rd8 (14...Rc8 15.Nd5! Rc1 16.Bc1+/–) 15.Ba6 Bd6 (15...Bb4 16.ab4 ba6+–) 16.Ne6+– Ke6 17.Be2 f5 18.f4 Rhg8 19.h4 (19.0–0 Kf7+–) 19...Nf6+/– 20.Qb3 Nhg4 21.b5 (21.0–0 Ra8+/–) 21...g6 (21...Qa5 22.Bg4 Ng4 23.Rc3+=) 22.a4 Rc8 23.0–0 h6 24.Rc8 Rc8 25.Rc1 Rc1 (25...Qa5 26.Rc3 (< 26.Rc8 Qd2 27.Rc2 Qe1 28.Bf1 Qh4–/+) 26...Ra8 27.Qc2=) 26.Bc1+/– Bf4 27.Bg4 (27.ef4 Qa5) 27...Ng4 28.ef4?? (28.Nf1 Bc7 29.Ba3=+) 28...Qd4 29.Kh1 Qf2 (30.Qg3 Qg3–+) 0–1. Gouma,R – de Jong,P, Utrecht, 1991.

9.Nc3 Nd7 10.Be2 +=.

9.Nc3 Be7 10.Rc1 a6 11.Nb3 b6 12.c5 White gets in control 12...Qd8 (12...bc5 13.Nc5 a5 14.b5+/–) 13.cb6 Bg4 (13...Qb6 14.Na4 Qd8 15.Nac5+/–) 14.f3 ef3 15.gf3 Bh5 16.Bd3 (16.Na4 Nf5 17.Rc3 Bd6+/–) 16...f5 (16...Qb6 17.Na4 Qc7 18.Nbc5+/–) 17.0–0 (better is 17.Nc5 Qb6 18.Ne6 Bh4 19.Kd2+/–) 17...Bd6? (better is 17...Qb6!? 18.Qc2 0–0+/–) 18.Nd5+– Bh2 19.Kh2 Qd5 20.Rc5 Qd6 (20...Qd8 21.Re5 Kf8 22.Bf5 Nf5 23.Rf5 Bf7 24.Nc5 Qd6 25.Re5+–) 21.Re5 Kd8 (21...Kf8 22.Nc5 Nf7 23.Ne6 Kg8 24.Bc4+/–) 22.Nc5 Qf6 23.d5 Qh4 (23...Bf3 24.Qf3 (24.Rf3?! Ng4 25.Kg2 Ne5 26.Bf5 Ke8+–) 24...Ng4 25.Qg4 fg4 26.Rf6 gf6 27.Re6+–) 24.Kg2 Qg5 (24...Nf7 25.Ne6 Ke7 26.Ng7 Kd8 27.Rf5+–) 25.Kh3 (25...Re8 26.dc6 Re5 27.c7 Ke7 28.c8Q (28.cb8N?! Re3 29.Nc6 Ke8+/–) 28...Re3 29.Qb7 Kf8 30.Bg7 Qg7 31.Qa8 Qg4 32.Kh2 Qf4 33.Kg2 Qg5 34.Kf2 Ng4 35.fg4 Qf4 36.Kg1 Rg3 37.Qg2 Qe3 38.Kh2 Rg2 39.Kg2+–) 1–0. pcmvr (2645) – cxplayer (2510), net–chess.com, 2006.

9.Nc3 Be7 10.Rc1 a6 11.Nb3 Bf7 12.cd5 cd5 13.Nc5 b6 14.Qa4 Kf8 15.Nb5 Qd8 16.Nc7!? The pressure on a6 grows 16...bc5 (16...Qc7 Decoy to c7 17.Ne6 A double attack) 17.Ne8?? (better is 17.Na8 c4 18.Rc3+=) 17...c4 (better is 17...Be8 18.Qb3 cb4 19.ab4–+) 18.Qa5 (18.Nf6 Bf6 19.Be2 Be8–+) 18...g6 (18...Qa5 19.ba5 Ke8 20.f3 ef3 21.gf3–+) 19.Nd6 (19.Qd8 Bd8 20.Nd6 Bc7–+) 19...Kg7 (better is 19...Qa5 20.ba5 Bd6–+) 20.Nc4 (20.Qd8 Rd8 21.Nb7 Rc8–+) 20...dc4 21.Qd8 Rd8 22.Bc4 Rc8 23.Bf7 Rc1 24.Bc1 Kf7 25.Ke2 Ke6 26.Bd2 Kd5 27.a4 (27.Rc1 Nc6–+) 27...Nf5 (27...Nd7 28.h4–+) 28.Rc1 Bd6 29.b5 (29.f3 Nd7 30.g4 Ne7–+) 29...ab5 30.ab5 h5 (30...Ra2 31.Rb1–+) 31.h3 (31.g3 Nd7–+) 31...Ne7 (better is 31...Ra2 32.Rb1 Nh4–+) 32.Ba5 (32.f3 Ra2 33.Rb1 Nf5–+) 32...Nd7 (better is 32...Ra5 33.Rb1–+) 33.Bc7 Bc7 (33...Ra2 34.Kf1–+) 34.Rc7 Kd6 35.Rc2 Nb6 (35...Ra5 36.g4–+) 36.h4 (36.f3 ef3 37.gf3 Ra5–+) 36...Kd7 (36...Ra5 37.Rb2–+) 37.Kd2 (37.f3 ef3 38.Kf3–+) 37...Kd6 (37...Ned5 38.Ke2–+) 38.Kc3?? (38.Ke2 Ra5 39.f3 ef3 40.gf3 Rb5 41.e4–+) 38...Ned5 39.Kb3 Ke6 40.Rc6 (40.Rc1 Ra4–+) 40...Kf7 41.f3 (41.Rc5 Ra1–+) 41...f5 42.fe4 fe4 43.Rd6 (43.Rc5 Ne3 44.Rc7 Kf8–+) 43...Ke7 (better is 43...Ra1 44.Rc6 Rb1 45.Ka2 Rb5 46.Rc5–+) 44.Rg6 Nd7 (better is 44...Ra4 45.Rg5 Rb4 46.Kc2 Ne3 47.Kc1 Rd4 48.Re5 Kd6 49.Rh5–+) 45.g4 –+. Vokac,Marek (2480) – Mohr,Georg (2480), Mitropa Cup, 1997.

9.Nc3 Be7 10.Rc1 f5 11.cd5 Bd5 12.Nd5 Qd5 13.Bc4 Qd6 14.Bb3 (14.Qh5 Qg6 15.Qg6 hg6+/–) 14...Nf7 15.0–0 Nd7 16.f3 Bg5 17.Bf7 Kf7 18.Nc4 (better is 18.fe4!? Be3 19.Kh1+/–) 18...Qh6+= 19.Qb3 Ke7 20.Rce1 Rhf8 21.b5 Rac8 22.a4 (22.Qb4 Kd8 23.Qa5 b6 24.Qa7 cb5=) 22...Qe6 23.Ba3 c5 24.d5 (better is 24.a5!?+=) 24...Qd5=+ 25.Rd1 Be3 26.Qe3 Qc4 27.Rd4 Qe6 28.fe4 Kf7 (28...Ke8!? 29.Rc1 a6=+) 29.Rf5= Kg8 30.Rdd5 Rf5 31.Rf5 b6 32.Bb2 Rf8 (32...Qa2 33.Qd3 Qb2 34.Qd5 Kh8 35.Qd7+=) 33.Qg3 g6?? (better is 33...Rf7 34.Rf7 Qf7+=) 34.Qc3+– (34...Nf6 35.Rf6 Qe4 36.Re6 Qd4 37.Qd4 cd4 38.Bd4+–) 1–0. Buczinski,Henryk – Latka,Wieslaw, Siemianowice Slaskie, 1994.

7.Ng1 f5

8.Nh3 Nf6

9.Nd2 Be7

10.c4 0–0 A) 11.Be2 Qd7 (11...Nc6 12.Nf4 Qd7 13.0–0 Bf7 14.Bc3 Bd6 15.c5 Bf4 16.ef4) 12.Ng5 a5 13.b5 h6 14.Ne6 Qe6 15.Qc2 Nbd7 16.0–0; B) 11.Nf4 a5 12.b5 (12.c5 Qd7 13.b5 Bf7 14.h4 Ng4 15.Be2 a4 16.Bc3) 12...Bf7 13.Be2 g5 14.Nd5 Nd5 15.cd5 Nd7 16.Qc2.

10.c4 Qd7 11.Be2 0–0 12.0–0 (12.Ng5 h6 13.Ne6 Qe6 14.Qc2 a5 15.b5 Nbd7 16.0–0) 12...Nc6 13.Ng5 Nd8 14.Qc2 a5 15.ba5 Qc6 16.Bc3.

10.c4 c6

11.Be2 Nbd7 12.Ng5 dc4 13.Ne6 Qe6 14.Nc4 0–0 15.0–0 Nd5 16.Qc2 f4 17.ef4.

11.Be2 Bf7 12.c5 (12.0–0 Nbd7 13.Ng5 Qc7 14.h3 Bg8 15.cd5 Nd5 16.h4; 12.Ng5 Nbd7 13.0–0 Qc7 14.c5 Bg8 15.a4 h6 16.Nh3) 12...Qc7 A) 13.0–0 0–0 (13...Nbd7 14.Ng5 Bg8 15.a4 h6 16.Nh3) 14.Ng5 Nbd7 15.Bc3 (15.h3 Rae8 16.Qb3) 15...Rae8 (15...f4 16.Nf7) 16.Rb1 g6 17.Nf7; B) 13.Ng5 0–0 14.Nf7 (14.0–0 Nbd7 15.h3 f4 16.Qb3) 14...Rf7 15.0–0 Nbd7 16.h3 Nf8 17.b5.

11.Nf4 0–0 12.c5 (12.Be2 Bf7 13.0–0 Qc7 14.f3 Nbd7 15.fe4 de4 16.Rc1) 12...Qd7 13.Be2 Bf7 14.0–0 Na6 15.f3 Nc7 16.fe4.

11.Be2 0–0

12.0–0 Na6 13.Qb3 (13.Nf4 Nc7 14.cd5 Nfd5 15.Nc4 Qd8 16.Ne6) 13...Nc7 (13...Bf7 14.c5 Qb8 15.Rfe1 Ng4 16.g3) 14.c5 (14.Rac1 Qd7 15.Ng5 dc4 16.Nc4) 14...Qd7 (14...Qd8 15.Nf4 Bf7 16.f3) 15.Ng5 h6 16.Ne6 Ne6 17.b5.

12.c5 Qd7 13.Ng5 Na6 14.Ne6 Qe6 15.0–0 Nc7 16.h3.

12.Nf4 A) 12...Na6 13.cd5 cd5 (13...Bd5 14.0–0 Nc7 15.Qc2 Ne6 16.Nc4) 14.Ne6 Qe6 15.0–0 Bd6 (15...Rac8 16.Nb3) 16.Qb3 Rac8 17.Rac1; B) 12...Bf7 13.0–0 Qc7 14.b5 (14.f3 Nbd7 15.fe4 de4 16.Rc1) 14...Nbd7 15.cd5 Nd5 16.Nd5 Bd5 17.bc6.

12.c5 Qc7

13.0–0 Na6 (13...Nbd7 14.Nf4 Bf7 15.h4 Ne8 16.g3) A) 14.Qb3 Ng4 (14...Qd7 15.a4 Nc7 16.b5) 15.Nf4 g5 16.Bg4 gf4 17.Be2; B) 14.Nf4 Bf7 15.h4 (15.h3 g5 16.Nh5 Nh5 17.Bh5; 15.b5 cb5 16.Bb5) 15...Qd7 16.Qb3 (16.h5 Ng4 17.Qb3) 16...Nc7 17.h5= (17.a4 Ng4 18.f3).

13.Bc3 Na6 A) 14.Nf4 A1) 14...Bd7 15.h4 Qd8 16.Qb3 (16.h5 Ng4 17.Qb3) 16...Nc7 17.0–0= (17.h5 Ne6 18.Ne6); A2) 14...Bf7 15.0–0 Qd7 16.Qc2= (16.h3 Nc7 17.a4); B) 14.a4 Bf7 15.b5 Nb8 16.0–0; C) 14.0–0 Bd7 (14...Qd7 15.Qb3 Nc7 16.Ng5) 15.g3 (15.Qb3 Qb8 16.Nf4) 15...Qb8 (15...Qd8 16.Nf4) 16.Qb3= (16.Nf4 Nc7 17.Qb3).

13.Bc3 Bd7 A) 14.0–0 A1) 14...Ng4 15.g3 (15.Nf4 g5 16.Bg4 fg4 17.Nh5 Be6 18.Qb3) 15...Rf6 16.Qb3 Rh6 17.Bg4 fg4 18.Nf4 g5 19.Nd5; A2) 14...Na6 15.Qb3 Ng4 (15...Qb8 16.Nf4) 16.g3 Qd8 17.Nf4 (17.b5 Nc7 18.Ba5) 17...Nc7 18.h3 Nf6 19.Rfe1; B) 14.Qb3 B1) 14...Ng4 15.Nf4 (15.b5 g5 16.bc6) 15...g5 16.Nh5 Nh2 17.Nc4 Be6 18.Ne5 Ng4 19.Bg4; B2) 14...Na6 15.0–0 Ng4 (15...Qd8 16.Nf4) 16.g3 Qd8 17.b5= (17.Nf4 Nc7 18.h4).

13.Bc3 h6 14.Nf4 Bf7 15.h4 Nbd7 16.0–0= (16.h5 b6 17.Ng6).

13.Bc3 Bf7

14.Ng5 g6 15.Nf7 Rf7 16.0–0 Nbd7 17.a4+= (17.Rb1 Rb8 18.g3 b6 19.Nb3.

14.Ng5 g6 15.g3 A) 15...Nbd7 16.h3 (16.0–0 Kg7 17.Nf7 Rf7 18.Qa4 a6 19.Rab1) 16...Kg7 17.Nf7 Rf7 18.0–0 (18.Rb1 h5 19.b5) 18...Nf8 19.Rb1 Ne6 20.b5; B) 15...Kg7 16.Nf7 Rf7 B1) 17.0–0 Nbd7 18.Rb1 (18.Qa4 a6 19.Qa5) 18...a6 19.Qa4 Ng4 20.Kh1; B2) 17.Qa4+=.

14.Ng5 Nbd7

15.0–0 Rac8 16.Rb1 (16.Nb3 f4 17.Nf7) 16...h6 17.Nf7 Rf7 18.a4.

15.0–0 Rae8 16.Rb1 A) 16...h6 17.Nf7 Rf7 18.a4 b6 (18...Nf8 19.b5) 19.Nb3 Rb8 20.h3; B) 16...g6 17.g3 b6 18.Nb3 Ng4 19.Nf7; C) 16...Ng4 17.Bg4 Bg5 18.Bf5 Be6 19.Qh5 Bf5 20.Qg5 Re6 21.Qg3.

15.0–0 Rae8 16.Nb3 A) 16...h6 17.Nf7 Rf7 18.h3 Nf8 (18...f4 19.ef4) 19.b5 Ne6 20.bc6; B) 16...Ng4 17.Bg4 Bg5 18.Bf5 Nf6 19.b5; C) 16...f4 17.ef4 Qf4 18.Bd2 C1) 18...Qc7 19.h3 (19.Qc1 b6 20.h3) 19...h6 20.Nf7 Rf7 21.b5; C2) 18...Qb8 19.b5+/– (19.h4 Bd8 20.b5).

15.0–0 Rae8 16.Rc1 Ng4 17.Bg4.

15.0–0 g6 16.Nf7 Rf7 17.a4 +=.

15.0–0 g6 16.Nf7 Rf7 17.Rb1 Kg7 (17...Re8 18.a4) 18.g3+= (18.Nb3 Ng4 19.Bg4).

15.0–0 g6 16.Nf7 Rf7 17.Rc1 Rb8 A) 18.g3 b6 A1) 19.Rb1 Rff8 20.Qa4; A2) 19.Qa4 Ng4 20.Rb1= (20.cb6 ab6 21.Qd1); A3) 19.cb6+=; B) 18.Rb1 Rbf8 (18...b6 19.g3) 19.b5+= (19.g3 b6 20.Nb3).

15.0–0 g6 16.Nf7 Rf7 17.Rc1 Nf8 18.b5+= (18.h3 Ne6 19.b5).

15.0–0 g6 16.g3 Kg7 (16...h6 17.Nf7 Rf7 18.a4) A) 17.b5 A1) 17...Bg8 18.bc6 (18.Rb1 cb5 19.Rb5 h6 20.Nh3) 18...bc6 19.Rb1 (19.Qa4 Ng4 20.Ba5) 19...Ng4 20.Bg4 Bg5 21.Be2; A2) 17...cb5 18.Nf7= (18.Bb5 Bg8 19.Qa4); B) 17.Nf7 Rf7 B1) 18.Rb1 Rc8 (18...a6 19.Qa4 Ng4 20.Kh1) 19.Qc2 a6 (19...b6 20.a4) 20.a4 b5 21.cb6; B2) 18.b5 cb5 19.Qb3= (19.Bb5 a6 20.Bd7); B3) 18.Qa4+=.

15.0–0 h6 16.Nf7 Rf7 17.Rb1 (17.a4 Nf8 18.b5 Ne6 19.Nb3+= (19.bc6 bc6 20.Rb1)) 17...b5 (17...Rb8 A) 18.Kh1 b6 (18...a6 19.Qc2 Re8 20.h3) 19.h3 Nf8 20.Qa4 Ng6 21.Qc2; B) 18.a4 B1) 18...b6 19.Rb3 Rd8 (19...Rbf8 20.h3) 20.h3 Nf8 21.cb6; B2) 18...Nf8 19.b5 Ne6 B21) 20.Nb3 f4 (20...Rff8 21.Na5) 21.Na5 Rff8 22.Qc2; B22) 20.bc6 Qc6 (20...bc6 21.Rb8) 21.Qb3 Qc7 (21...f4 22.Qb5) 22.a5 g6 23.a6; 17...Raf8 18.a4 h5 19.b5 Ng4 20.g3 Rf6 (20...Bg5 21.bc6) 21.bc6 bc6 22.Nb3; 17...Rd8 18.a4 Nf8 19.b5 Ne6 20.Nb3 Rb8 21.Na5; 17...a6 18.h3+= (18.g3 Nf8 19.Qa4)) 18.a4 a6 19.Ra1 Re8 20.Nb3 Nf8 21.ab5 ab5 22.Ra6 Ng4 23.Bg4+/– Qc8 24.Bh5 Qa6 25.Bf7 Kf7 26.Qh5 g6 27.Qh6 Qa3 28.Rb1 Ne6 29.Qh7 Ng7 30.Qh3 Qa2 31.Rb2 Qa3 32.g3 g5 33.Qh6 Bf6 34.h4 gh4 35.Qf4 Qa7 36.gh4 Rh8 37.Qd6 Rh4? 38.Kf1?? Qb7 39.Na5+= Qc8 40.Ke2 f4–/+ 41.Kd1 fe3–+ 42.Re2 Qg4 43.Qc7? Kg8–+ 44.fe3 Rh1 (44...Rh1 45.Be1 Bh4–+) 0–1. marekt – MrMartin58, ChessWorld.net, 2011.

6.Be2 Nd7

7.0–0 a5 8.b5 Ne7 9.d4 Rd8 10.c4 dc4 +=.

7.0–0 Nb6 8.d3 0–0–0 9.Nfd2 Qd7 10.c4 (10.d4!? Na4 11.Qc1=) 10...dc4–/+ 11.dc4 Nc4 12.Nc4 Qd1 13.Rd1 Rd1 14.Bd1 Bc4 15.Nd2 Be6 16.Rc1 Nh6 17.b5 Be7 18.Bb3 Bb3 19.Nb3 Rd8 20.Na1 Ng4 21.h3 (better is 21.Nc2–+) 21...Nf2! 22.Be5 (22.Kf2 Rd2 Double attack) 22...Rd1 23.Rd1 Nd1 24.Bd4 Ba3 25.Kf1 Bb2 26.Bb2 Nb2 27.Ke2 Nc4 28.Nc2 Kd7 29.Kd3 Ne5 30.Kd4 Kd6 31.Nb4 (31.Kc3–+) 31...c5 32.bc6 Nc6 33.Nc6 Kc6 34.g4 b5 0–1. Paquet,Jacques (1630) – Le Ray,Olivier (1995), FRA–chT4, 2004.

7.0–0 Bg4 8.h3 Bf5 9.c4 b6 (better is 9...dc4!? 10.Bc4 Bd3 11.Bd3 Qd3=) 10.cd5+/– 0–0–0? (better is 10...Qd5!? 11.d4 Qd6+/–) 11.Nc3+– c5 12.Nh4 (12.Qa4 Re8 13.bc5 Qc5+–) 12...Ne7? (12...Bg6+–) 13.Nb5 (13.Nf5?! Nf5 14.Qa4 Kb7+–) 13...Qd5 14.Bc4!! (14.Na7?! Kb8 15.Nf5 Nf5+–; 14.Nf5?! Nf5 15.Qc2 Nd6+–) 14...Qc4 (14...Qa8 15.Nd6 Kb8 16.Nhf5 Nf5 17.Nf5+–) 15.Nd6 Kc7 16.Nc4 (16.Ndf5?! Nf5 17.Nf5 Qd3=; 16.Nhf5?! Qe6 17.Qc2 Nc6 18.Nb5 Kb8+=) 16...cb4 (16...Bd3 17.Rc1 b5+–) 17.Nf5 Nf5 18.ab4 h6 (18...Rc8 19.Ra7 Kd8 20.Rd7 Kd7 21.Nb6 Kd8 22.Nc8 Kc8 23.Qc2 Kd8 24.Qf5 Bd6+–) 19.Ra7 Kc8 (19...Kc6 20.Qf3 Kb5 21.Qd5 Kb4 22.Bc3 Kb3 23.Na3) 20.Qf3 Nh4 (20...e4 21.Qe4 Nd6 22.Nd6 Bd6 23.Qb7) 21.Qb7 1–0. Bonetti,Shane – Oblivion2, ICC, 2002.

7.Nc3 0–0–0 =.

7.Nc3 Qb6 8.0–0 0–0–0 9.d4 e4 10.Nd2 Be7=.

7.Nc3 c6 8.0–0 Be7 9.d3 Nh6 10.Re1 0–0 11.Rc1 f5 12.Nb1 f4 13.Nbd2 1–0. douglasricardo (2245) – luminarydebris (1620), net–chess.com, 2011.

7.d3 a5 8.Nbd2 (8.b5!?=) 8...ab4+= 9.ab4 Ra1 10.Qa1 Qb4 11.0–0 Nb6 12.Rb1 (12.c4 dc4 13.Nc4 Nc4 14.dc4 Bd6+= (14...Bc4 15.Qa8 Kf7 16.Ba3 Qa3 17.Bc4 Kg6 18.Qe8 Kh6 19.g4+/–)) 12...Qd6 (12...Qa4!?–/+) 13.Qa7+= (continuation unknown, 32 moves) 1–0. Conner,P – Bury,M, Maryland, 1982.

7.d3 b5 8.0–0 Ne7 9.Nbd2 Nb6 10.Nb3 (10.d4 e4 11.Ne1 Qc6=) 10...Na4 11.Bc1 a6 (11...Nc3 12.Qd2 Ne2 13.Qe2=) 12.Qe1 g6 13.Nfd2 (13.c4 dc4 14.dc4 Bc4 15.Bc4 bc4=) 13...Bg7 14.Bf3 Rc8 (14...0–0 15.c4=) 15.Nb1 (15.c4 c5=) 15...0–0 (15...c5 16.Qd2+=) 16.Nc3= f5 17.d4 e4 (17...Nc3 18.Qc3 Nc6 19.a4=) 18.Be2= Nb6 (18...Nc3 19.Qc3 h6 20.Nc5=) 19.Nc5 (19.a4 ba4 20.Na4 Na4 21.Ra4 Ra8+=) 19...Ra8 20.Bd2 (20.a4 c6=) 20...c6 21.a4 Nc4 22.Bc4 dc4 23.f4 (23.Nb7 Qc7 (23...Qb4? 24.Rb1 Nd5 25.Rb4 Nb4 26.Nc5+–) 24.Nc5 Bf7=) 23...ef3 24.Rf3 (worse is 24.Ne6 fg2 (24...Qe6?! 25.Rf3 Nd5 26.Nd5 cd5 27.Qg3+=) 25.Kg2 Qe6–+) 24...Bd5 (24...Nd5 25.Qg3 f4 26.Qh4 Ne3 27.N3e4 Qd4 28.c3 Nf5 29.cd4 Nh4 30.Ne6 Nf3 31.gf3+=) 25.Nd5 cd5 26.c3 Kh8 27.Ra2 Ng8 (27...Rfe8 28.Qh4=) 28.Qa1 Qc6 29.Qf1 (29.Rf4 Nf6=) 29...Nf6+= 30.Qe1 Rfe8 (30...Ne4 31.ab5 ab5 32.Qb1+=) 31.Qd1 (31.Qg3 Ne4 32.Ne4 Re4 33.ab5 ab5 (worse is 33...Qb5 34.Qc7+=) 34.Ra8 Qa8+=) 31...Bf8 32.Be1 Bc5 33.dc5 Re4 (33...Ne4 34.Qd4 Kg8 35.a5=) 34.h3 (34.ab5 ab5 35.Ra8 Qa8=) 34...Kg7 (34...Rae8 35.ab5 ab5 36.Bf2+=) 35.Ra1 (35.Bg3 a5=) 35...Nd7 (35...Rae8 36.ab5 ab5 37.Ra7 Kg8 38.Qd2+=) 36.ab5 Qb5 (36...ab5 37.Ra8 Qa8 38.Bg3=) 37.Bg3 (37.Qd5!? Rae8 38.Bg3+/–) 37...Qc6= 38.Ra5 Ne5 39.Be5 Re5 40.Kf2 Ree8 (40...Re4 41.Qd2=) 41.Qa1 (41.Qa4 Qa4 42.Ra4 h5+=) 41...Re4= 42.Qa4 Re6 (42...Qe6 43.Qa1=) 43.Qc6+= Rc6 44.Rf4 Kf6 (44...Re8 45.Rd4 Re5 46.g3+=) 45.g4 Rg8 (45...Re8 46.gf5 g5 47.Rd4+/–) 46.Ra1 (46.gf5 gf5 47.Rh4 Kg7+/–) 46...Ke5 47.Rd1 h6 (47...fg4!? 48.Rg4 Rf8 49.Ke2 Rcf6 50.Rg5 Rf5=) 48.gf5 (48.Rfd4 Rd8+=) 48...gf5 49.Rfd4 (49.Rfd4 Rd8 50.Rc4+/–) 1–0. Margraf,A – Gulde, Mittelschwaben, 1990.

7.0–0 0–0–0

8.Nc3 =.

8.d4 e4 9.Nfd2 f5 10.c4 c6 (better is 10...dc4!? 11.Nc4 Bc4 12.Bc4 Qh6=) 11.c5+/– Qc7 12.b5 Ne7 13.Qb3 Kb8 14.Nc3 Ka8 15.Rab1 g5 16.a4 a5?? (better is 16...Rb8+/–) 17.b6+– Qb8 18.Na2 f4 (18...Nc8 19.Qc3 Na7 20.Qa5+–) 19.Qc3 (19.Qc3 Nc8 20.Qa5 Na7 21.ba7+– (worse is 21.Qa7 Qa7 22.ba7 Bh6+–)) 1–0. marekt – Grimshaw, internet, 2005.

7.0–0 Be7

8.Qc1 Nh6 9.c4 c5 10.cd5 Bd5 11.Nc3 +=.

8.Qc1 Nh6 9.c4 c6 10.c5 Qc7 11.h3 0–0 12.d3 Rae8 13.Nbd2 Bd8 (13...b6 14.cb6 ab6 15.Qc2+=) 14.Re1 Kh8 15.Nf1 Qc8 16.N1h2 Bc7 17.Kh1 Qd8 18.Qc2 Qe7 19.Rg1 Qf7 20.Nd2 f5 (20...Qg6 21.Nhf3+=) 21.Raf1 (21.Qa4 Ra8=) 21...f4 22.ef4 (22.Qa4!? Ra8 23.Nhf3+=) 22...Qf4–/+ 23.Ndf3 Qf7 (23...Nf5 24.Ng4 Nd4 25.Nd4 ed4 26.g3+=) 24.Ng5+= Qf5 (24...Qg6 25.Ne6 Re6 26.Nf3=) 25.Bc1 (25.Ne6 Re6 26.Nf3 Kg8=) 25...Bg8 26.g4 (26.Nhf3!?+=) 26...Qg6 27.Nhf3 Nf7 28.Nh4 Qf6 29.Nf7 Qf7 (29...Bf7 30.Nf5–/+) 30.Ng2 (30.Nf5 Qg6–/+) 30...Qe6 31.f3 (31.Qa4 Bb8–/+) 31...Nf6 Black prepares e4 32.Ne1 (32.Qa4 Bb8–/+) 32...Nh5 33.Bd1 (33.Qa4 Nf4 34.Bf4 ef4–/+) 33...e4 (33...Nf4 34.Bf4 Rf4 35.Ng2–+) 34.Rf2 (better is 34.Kg2 Qe5 35.f4 Nf4 36.Bf4 Rf4 37.Kh1–+) 34...Ng3 35.Kg2 e3 36.Re2 Ne2 37.Qe2 Qe5 38.Kf1 (38.Kh1 d4–+) 38...Qh2 (better is 38...d4!? 39.g5–+) 39.Qh2 Bh2 40.Rg2 Bf4 41.Re2 h6 (41...d4 42.Bb2 Be5 43.Ba4–+) 42.Bb2 Kh7 43.Bc2 g5 (43...g6 44.Ng2–+) 44.d4 (44.Ng2 Bc7 45.d4 Kg7–+) 44...Kg7 45.Ng2 Bh7 46.Bh7 Kh7 47.Nf4 (47.h4 Kg7–+) 47...gf4 (47...Rf4 48.Kg2–+) 48.Kg2 (48.Ke1 Kg6–+) 48...h5 49.Kg1 (49.g5 Rg8 50.h4 Kg6–+) 49...Kg6 50.Kf1 hg4 (50...hg4 51.hg4 Rh8–+) 0–1. Gugulski,Marcin – Baluch,Wieslaw, corr 1.AMM Poland, 1992.

8.Qc1 Nh6 9.c4 c6 10.d4 e4 11.Nfd2 0–0 (11...Ng4 12.f4=) 12.c5 Qc7 13.Qd1 (13.f3 f5=) 13...f5 14.Re1 (14.Qb3!?=) 14...f4–/+ 15.Nf1 Bh4 16.Bc1 f3! 17.gf3 ef3 18.Bf3 Rf3 19.Qf3 Decoy to f3 19...Rf8 20.Qe2 Bg4 21.Qd2 Bf2 22.Qf2 Rf2 23.Kf2 Qd8 24.Ng3 (24.Kg1 Qh4 25.Bd2 Bf3–+) 24...Qh4 Threatening mate... how? 25.Rg1 Bf5 26.Ke1 Qh2 27.Ne2 Ng4 28.Rf1 (28.Kd2 Qf2 29.e4 Be4 30.Rg4 Bf3 31.Rg7 Kg7–+) 28...Qh4 29.Kd1 Nf2 (29...Nf2 30.Rf2 Qf2–+; 29...Nf2 30.Kd2 Nf6–+) 0–1. Dopper,Johan C – Gouma,Ronald, NED–ch2 email, 1999.

8.Nc3 c6 9.d3 (9.b5 Nh6=) 9...Nh6=+ 10.Re1 0–0 11.Rc1 (11.Qd2 b5=+) 11...f5 (11...b5 12.Qd2=+) 12.e4 (12.Na4 e4 13.Nd4 b5=+) 12...fe4 (12...d4 13.Nb1=+) 13.de4=+ d4 14.Nb1 b6 (14...a5 15.c3 ab4 16.ab4=+) 15.c3= c5 16.h3 (16.cd4 cd4 17.Qa4 Bf6=) 16...Nf7 17.cd4 cd4 18.Bc4 Bc4 19.Rc4 Qe6 (19...b5 20.Rc2=+) 20.Qd3 Nd6 (20...a5 21.Rec1=+) 21.Rc6 (21.Rc7 Rfd8=) 21...Rac8 (21...a5 22.Rec1=+) 22.Rec1= Rc6 23.Rc6 Rc8 (23...a5 24.Nbd2=) 24.Rc8 Nc8 25.Qa6 (25.Nbd2 Qc6+=) 25...Qc6 26.Nbd2 Qc7 (26...Bd6 27.Qd3 b5 28.Qb3 Kh8 29.Ng5+=) 27.Qb5 (27.Nc4 Bf6=) 27...h6 (27...Nd6 28.Qd5 Nf7 29.b5=) 28.Nc4 Bf6 29.Ne1 (29.Qd5 Kh7=) 29...Kh7 (29...Qb7 30.Nd2=) 30.Nd3 Ne7 31.Bc1 Ng6 (31...Qb7 32.Nd6 Qc7 33.Ne8=) ½–½. Blaszczak,Jan – Baluch,Wieslaw, corr 2. AMM Poland, 1993.

8.d3 0–0–0 9.Nbd2 g5 10.c3 h5 11.e4 h4 12.ed5 Bd5 13.Ne4 Be4 14.de4 Qd1 15.Rad1 Bd6 16.c4 c6?? (better is 16...h3+/–) 17.Rd6+– Ne7 18.h3 Kc7 (18...c5+–) 19.b5 (better is 19.Rf6! Rhe8 20.Ng5 Nf6 21.Be5 Kc8 22.Bf6+–) 19...Kd6–/+ 20.Rd1 Kc7 21.a4 Nc5 22.Rb1? (22.Ba3 Rd1 23.Bd1 Rd8–+) 22...Rd7 (22...Na4 23.Ba3 c5 24.Kf1–+) 23.Ba3? (better is 23.Ng5!? Rd2 24.Ba3 fg5 25.Bc5 Re2 26.Be7 Re4 27.Rc1–+) 23...Na4 24.bc6 (24.Bb4–+) 24...Nc6 (24...bc6?! 25.Ra1 Nc8 26.Bb4–+) 25.c5 (25.Rb3 Rhd8–+) 25...Nc3 26.Rb2 Ne2 (better is 26...Ne4!? 27.Kf1–+) 27.Re2 Nd4 28.Nd4 Rd4 29.Rc2 (29.Re3 Rhd8 30.g3 Rd3 31.gh4 Re3 32.fe3 gh4–+) 29...Re4 30.Bc1 Re1 31.Kh2 Rd8 32.c6 (32.Bd2 Ra1 33.Bc3–+) 32...Rdd1 33.cb7 Kb7 34.Rb2 Ka8 35.g3 e4 36.Rd2 (36.f3 ef3 37.gh4 gh4 38.Rb8 Kb8 39.Bf4 Kb7 40.Be5 Re2) 36...Rh1 37.Kg2 Rdg1 0–1. workchess (2215) – douglasricardo (2245), net–chess.com, 2011.

8.d3 c6 9.Nbd2 Nh6 10.e4 (10.c4 0–0=) 10...0–0 (10...a5 11.d4=) 11.c3 (11.d4 a5 12.c4 ab4 13.ed5 cd5=) 11...f5 (11...a5 12.d4=) 12.ed5 cd5 13.c4 d4 14.c5 (14.Ne1 Bg5=) 14...Qc6+= 15.Rc1 1–0. Workchess (2215) – Luminarydebris (1620), net–chess.com, 2011.

8.d3 Nh6 9.Nbd2 0–0 10.c4 c6 11.Rc1 dc4 (11...b5 12.Nb3=) 12.dc4 (12.Nc4 Qc7+=) 12...Rac8 (12...c5 13.Bc3=) 13.c5+= Qc7 14.Ne4 (14.Qc2 Rcd8+=) 14...Bd5 (14...Rcd8 15.Qc2=) 15.Nc3+= Be6 16.e4 (16.Qc2 Rcd8+=) 16...Rcd8 17.Qc2 Nf7 18.Bd3 (18.Rfd1 Nb8+=) 18...a6 (18...Bg4 19.Nd2=) 19.Nd2 (19.Rfd1 Bg4+=) 19...Nb8 (19...a5 20.Bc4 Nc5 21.bc5 Rd2 22.Qd2 Bc4 23.Rfe1=) 20.Ne2 Rd7 21.Nc4 Rfd8 (21...a5 22.Rfd1+=) 22.Rfd1 (22.Rcd1 Re8+/–) 22...Bc4 (22...Bf8 23.Nb6 Re7 24.Bc4+/–) 23.Qc4 (23.Bc4 a5+/–) 23...Kf8 (23...b6 24.cb6 Qb6 25.Qb3+=) 24.Ng3 (24.Bc2 a5+/–) 24...Ng5 (24...b5 25.cb6 Qb6 26.Be2+=) 25.f3 (25.Bc2!? Nf7+/–) 25...h6 (25...b5 26.Qb3+=) 26.Nf5+/– Re8 (26...b5 27.Qb3+/–) 27.Bc2 (27.Bb1 Rd1 28.Rd1 Rd8+–) 27...Rd1 (27...b5 28.cb6! Qb6 29.Kf1+/–) 28.Rd1 Qc8?? (28...b5 29.cb6! Qb6 30.Kh1+/–) 29.Ne7 (better is 29.Bb3 Qe6 30.Qe6 Ne6 31.Be6 Bc5 32.bc5 Re6 33.Rd8 Re8 34.Re8 Ke8 35.Ng7 Kf8 36.Nh5+–) 29...Re7+/– 30.h4 (30.Bb3 Nf7+/–) 30...Nf7 31.g4 (31.Bc1 Qc7+/–) 31...Qe8 (31...h5 32.Qe2+=) 32.Bc1 (32.Bb3 Kg8+=) 32...Rd7 (32...Rc7 33.Bb3+=) 33.Be3 (33.Rd7 Nd7 34.Bb3 Qe7+/–) 33...Rd1 (33...h5 34.gh5 Nh6 35.Rd7 Nd7 36.Bb3+/–) 34.Bd1 Qd7 (34...g5 35.h5+/–) 35.Bb3 Ke7?? (better is 35...Qe8+/–) 36.Qf7+– Kd8 37.Qg8 Kc7 (37...Qe8 38.Qg7 Nd7 39.h5+–) 38.Bc2 (better is 38.Be6 Qd1 39.Kf2 Nd7 40.Qg7 Qc2 41.Kg3 Qd3 42.Bh6 Qd4 43.Qd7 Qd7 44.Bd7 Kd7+–) 38...Qe7 39.Bb3 (39.h5 Nd7+–) 39...Nd7?? (39...Qd7 40.Be6 Qd1 41.Kf2 Nd7 42.Qg7 h5 43.Bd7 Qd7 44.Qf6 Qe8+–) 40.Qf7 Qf7 41.Bf7 Nf8 42.g5 (42.g5 hg5 43.hg5+–) 1–0. Ctrotter (2470) – Workchess (2215), net–chess.com, 2011.

8.d4 0–0–0 9.c4 dc4 10.Qc2 =.

8.d4 a5 9.de5 fe5 10.Nc3 c6 11.b5 Ngf6=+.

8.d4 e4 9.Nfd2 a5 10.c4 ab4 11.c5 Nc5 12.dc5 +–.

8.d4 e4 9.Nfd2 c6 10.c4 f5 11.cd5 cd5 (11...Bd5 12.Nc3+=) 12.Nb3 (12.Nc3 Ngf6+=) 12...b6 (12...Ngf6 13.Nc3+=) 13.Nc3+/– a6 14.b5 (14.a4 Kf7+/–) 14...a5 15.a4 (15.Rc1 Qb8+=) 15...Bf7 (15...Qb8 16.Rc1=) 16.Ba3 (16.f3 Ngf6=) 16...Qh6= 17.Qd2 (17.Qb1 Ba3 18.Ra3 Rc8=) 17...Rc8 18.Rfc1 (18.Nb1 Ba3 19.Ra3 Ne7=) 18...Ba3 19.Ra3 Ne7 20.Ra2 0–0 21.Rac2 Be6 22.Nd1 (22.g3 g5=) 22...Rc2 23.Rc2 g5 24.f4 ef3 25.Bf3 g4 26.Be2 Nf6 27.Rc7 (27.Qe1 Ne4=) 27...Ne4 28.Qe1 Rf7 29.Nd2 f4 30.Ne4 de4 31.ef4 Qf4 32.Bc4 Bc4 33.Rc4 Nd5 34.Rc8 Kg7 35.Re8 Attacking the isolated pawn on e4 35...e3 (35...Nf6 36.Rc8=) 36.Ne3 Ne3 (36...Qd4 37.h3=) 37.Re3 Qd4 38.Qc3 (38.h3 Re7 39.Qc3 Re4=) 38...Qc3 ½–½. Dopper,Johan C (2175) – Gouma,Ronald (2325), corr KE03 NBC Email, 2000.

8.d4 e4 9.Nfd2 Nh6 (9...a5 10.c4 ab4 11.c5 Nc5 12.dc5+–) 10.h3 (10.c4 c6+=) 10...0–0 (10...a5 11.c4 ab4 12.c5 Nc5 13.dc5+–) 11.c4 c6 12.c5 Qc7 13.Nc3 f5 14.f3 (14.f4 b6=) 14...Bg5 (14...f4 15.fe4 fe3 16.ed5 cd5 17.Nf3=) 15.f4 Bh4 16.a4 (16.b5 Bg3=) 16...g5 17.Kh2 gf4 18.ef4 (18.Rf4? Bf2 19.Kh1 Be3–+) 18...Bf6 (18...Bg5 19.g3 Bf6 20.Re1=) 19.Nb3 b6 20.g3 (20.Qe1 bc5 21.Qg3 Kh8 22.bc5 Rab8=) 20...Kh8 (20...Rfe8 21.Re1+=) 21.b5 bc5 22.dc5 Rae8 (22...Rfe8 23.a5=) 23.Nd4 Nc5 24.bc6 (24.Ba3 Qd6+=) 24...Qg7 25.Ncb5 (worse is 25.Ne6 Ne6 26.Rc1 Rg8+=) 25...Rg8 ½–½. Van Esbroeck,Dirk – Wozniak,Andrzej, corr 3GMM–33, 1996.

8.d4 Nh6 9.Nbd2 ed4 (9...e4!? 10.Ne1 a5=) 10.Nd4+= Ne5 11.Ne6 Qe6 12.Nb3 0–0 13.Nd4 Qf7 14.Bb5 (14.Bh5 g6 15.Be2 f5+=) 14...c6= 15.Ba4 (15.Be2 Bd6=) 15...c5 (15...Bd6 16.Bb3=) 16.Nf3 (16.bc5 Bc5 17.Rb1 Nc4=) 16...Nc4= 17.Bc3 Nf5 18.Qd3 Nfd6 19.Bb3 Ne4 20.Bc4 Nc3 21.Qc3 cb4 22.ab4 Rfc8 23.Bd5 (23.Nd2 f5 24.Ra5 dc4=) 23...Qd5 (23...Rc3 24.Rfd1 Rc2 25.Bf7 Kf7 26.Rd7=) 24.Qb3 (24.Qb2 Qc4+=) 24...Qb3= 25.cb3 Bb4 26.Rfd1 Rc7 27.Nd4 a6 28.Rac1 Rac8 29.Rc7 Rc7 30.Kf1 Kf7 ½–½. Schalkwijk,Peter H (2030) – Makovsky,Josef, EM/J50/P035 ICCF Email, 2001.

7.0–0 Ne7

8.Nc3 c6 9.d4 e4 10.Nd2 g6 (10...Nf5=) 11.f3 (11.Na4 0–0–0=) 11...f5 (better is 11...Bh6!?+=) 12.fe4= fe4 (12...Bh6!? 13.ed5 Be3 14.Kh1 cd5= (worse is 14...Nd5 15.Nc4 Qe7 16.Nd5 Bd5 17.Ne3 Qe3 18.c4+/–)) 13.Nce4+/– de4 14.Ne4 (14.d5 Bh6 15.Ne4 (15.Bh8?! Be3 16.Kh1 Qd5+/–) 15...Be3 16.Kh1 Qd5 17.Qd5 Bd5 18.Nd6 Kd8 19.Bh8=) 14...Qc7 (14...Qd5 15.Bf3 Bg4 16.c4 Qe4 17.Be4 Bd1 18.Rad1=) 15.Ng5 (15.d5 Bd5 16.Bh8 Be4 17.Bd3 Bd3 18.cd3+=) 15...Bg8 (better is 15...Bd5 16.c4 Bh6–/+) 16.d5+= White gets in control 16...Nd5 (16...Bd5 17.Bh8) 17.Bh8+/– Ne3 18.Qd4 Nf1 19.Rf1 Qb6 20.Bg4 Qd4 21.Bd4 0–0–0? (21...a5 22.Bd7 Kd7 23.Nh7 Bh7 24.Rf7 Ke6 25.Rh7 ab4 26.ab4 Bb4 27.Rb7+=) 22.Ba7 (better is 22.Nf7!? Bf7 23.Rf7+–) 22...Kc7 (22...h5 23.Be6 Be6 24.Ne6+/–) 23.Ne6 (23.Be6 Bg7+/–) 23...Be6 24.Be6 Ne5 25.Bf2 (25.c4 Bg7 26.c5 Rd3+/–) 25...Bd6 26.Bg3 Re8 27.Bb3 Re7 (27...b5 28.Re1+/–) 28.c4 Nd7 (28...c5 29.Re1+/–) 29.Bd6 Kd6 30.c5 Kc7 31.Rf7 Re3 32.Bc4 Kd8 (32...h6 33.Rf3 Rf3 34.gf3+/–) 33.Rh7 Ra3 34.Be6 Nf8 35.Rh8 Ke7 36.Bh3 Ra8 37.Kf2 b6 38.cb6 Rb8 39.Rh4 Rb6 40.g3 Rb5 41.Re4 Kd8 42.Rc4 Kc7 43.Bg2 Rb6 44.Ke3 Nd7 45.Kf4 Kd6 46.Rc6?? (46.Be4 Nf6 47.Rc6 Rc6 48.Bc6 Kc6 49.Kg5+–) 46...Rc6+= 47.Bc6 Kc6 48.Kg5 Ne5 49.h4 (49.h4 Kd5 50.h5 gh5 51.Kh5=). Piszcz,Kazimierz (1800) – Rosinski,Zenon (2000), corr 1AMM Poland, 1991.

8.c4 dc4+= 9.Nc3 a5 10.b5 (10.Qa4 Ra7+=) 10...Nc5–/+ 11.Qc2 Qd7 12.d3?? (better is 12.Rad1–/+) 12...cd3–+ (12...Nd3?! 13.Rad1+=) 13.Bd3 Qd3 (worse is 13...Nd3 14.Rad1 Rd8 15.Rd2–+) 14.Qd3 Nd3 15.Rab1 Nc8 16.Rfd1 Nb2 17.Rb2 Ba3 18.Rbb1 Nb6 19.Nd2 Be7 20.Nde4 a4 21.Ra1 a3 22.Rd3 Kf7 23.Nb1 a2 24.Nbc3 Ra3 25.Nd2 Na4 26.Nde4 f5 27.Nd2 Rc3 28.Rc3 Nc3 29.Kf1 Rd8 30.Nf3 Rd1 31.Rd1 Nd1 0–1. Neumann,Frank – Husemann,Andreas (1990), OP–2012–0–02008, 2012.

8.d3 0–0–0 9.c4 dc4 10.dc4 =.

8.d3 g5 9.c4 c6 (9...dc4 10.dc4 Qc6 11.Qb3=) 10.Nc3 (10.d4 dc4 11.de5 Qd1 12.Rd1 Ne5 13.Be5 fe5 14.Ng5 Bd5+=) 10...a6 (10...0–0–0 11.d4=) 11.cd5 (11.d4 e4 (11...dc4? 12.Ne4 Qd5 13.Nfd2+–) 12.Nd2 Bg7+=) 11...cd5 (11...Nd5 12.d4 0–0–0 13.de5 Ne5 14.Qc2+/–) 12.Rc1 Ng6 (12...g4 13.Nh4 f5 14.d4=) 13.b5 (13.d4 e4 14.Nd2 Bg7+/–) 13...a5 (13...g4 14.Ne1+=) 14.Re1 (14.d4 e4 15.Nd2 f5+/–) 14...Be7+= 15.Bf1 (15.Nd2 0–0+=) 15...0–0= 16.e4 (16.d4 e4 17.Nd2 f5=) 16...d4 17.Ne2 (17.Na4 Rfc8=) 17...a4 (17...Qb6 18.Ned4 ed4 19.Nd4+=) 18.Nd2 (18.Ned4 ed4 19.Nd4 Nb6=) 18...Qb6 19.Rb1 Rfc8 (19...Nc5 20.Nc4 Bc4 21.dc4 Ne4 22.Nd4 Nf2 23.Qf3+=) 20.Nc4 (20.Ng3 Bf8+=) 20...Qd8 (20...Qc5 21.Ng3+=) 21.Ng3= Nc5 22.Nf5 Bf8 (better is 22...Nd3 23.Bd3 Bc4=) 23.Ng3 (better is 23.Rc1!?=) 23...Nf4–/+ 24.Nh5 Ncd3 (24...Nfd3 25.Bd3 Nd3 26.Qd3 Bc4 27.Qf3–+) 25.Bd3 (25.Nf4 A) 25...ef4?! 26.Bd3 Bc4 27.Bc4 Rc4 28.Rc1 Rc1 29.Qc1= (worse is 29.Bc1 Qa5–/+); B) worse is 25...gf4 26.Bd3 Bc4 27.Bc4 Rc4 28.Qg4 Kh8 29.Rec1–/+; C) 25...Nf4 26.Nd2 Qa5–/+) 25...Nd3–+ (25...Bc4?! 26.Nf4 gf4 27.Rc1+=) 26.Qd3 Rc4 (26...Bc4 27.Qf3 Be7 28.Rec1–+) 27.Rec1 Rac8 28.Rc4 Rc4 29.Rc1 Rc1 30.Bc1 Be7 31.h4 (better is 31.Bd2–+) 31...Qc8 32.Bd2 g4 (32...gh4 33.Bh6–+) 33.f3 (33.Ng3 Qc4 34.Qc4 Bc4–+) 33...Qc4 34.Qc4 Bc4 35.Bc1 (35.Kf2 gf3 36.Kf3 Bf7–+) 35...gf3 36.gf3 Bb5 (36...d3 37.Kf2 Ba3 38.Bd2 Bc5 39.Ke1–+) 37.Ng3 Bc4 (37...Bd7 38.Kf2–+) 38.Kf2 b5 39.Nf5 Bc5 40.Bb2 (40.f4 Kf7–+) 40...b4 (40...d3 41.Ke1 b4 42.Kd1 ba3 43.Ba3 Ba3 44.Ne3 Bb3 45.Kd2–+) 41.ab4 Bb4 42.f4 a3 43.Ba3 Ba3 44.Nh6 (44.Kf3 Bc5 45.fe5 d3–+) 44...Kg7 45.Ng4 Be6 (45...Be6 46.Kg3 Bg4 47.Kg4 f5 48.ef5 d3 49.f6 Kf7 50.fe5 d2–+) 0–1. Matei,C (1795) – Suciu,DS (2185), XI Bancpost A, Miercurea Ciuc ROM, 2008.

8.d3 g5 9.Nbd2 Ng6 10.c4 c6 11.Rc1 Be7 12.Qc2 0–0 13.Rfd1 Bg4 (13...g4 14.Ne1=) 14.h3 Bf3 (14...Be6 15.cd5 cd5 16.d4=) 15.Nf3 (15.gf3?! Qe6=) 15...Bd8 (15...a5 16.c5 Qe6 17.d4+=) 16.Qc3 h6 17.Bf1 Qe6 18.b5 Ne7 19.a4 Kh7 20.c5 (20.bc6 bc6 21.Rb1 Rb8+/–) 20...Bc7 21.Qb3 Rfb8 22.e4 Qg8 (22...f5 23.Re1+=) 23.g4 (23.d4!?+/–) 23...d4 24.Qc2 Ba5 25.Qc4 Qc4 26.Rc4 (worse is 26.dc4 Bb4–/+) 26...Ng6 27.Kh2 Nf4 28.Kg3 Rc8 29.Rdc1 Rc7 30.R1c2 Rac8 31.Ba3 Ne6 32.Ra2 Bc3 33.h4 (33.Ng1!?–/+) 33...cb5–+ 34.ab5 Ndc5 35.Bc5 Nc5 (35...Rc5 36.Ra7 Rc4 37.dc4–/+) 36.Ra7 b6 37.Rc7 (37.Ra3!?+=) 37...Rc7–/+ 38.Ng1 Ne6 (38...Ra7 39.h5–/+) 39.h5 Rc5 40.Ne2 Bd2 41.Kf3 Rc4 (41...Ba5 42.Ng3+=) 42.dc4= Bf4 43.Kg2 Kg7 44.f3 Kf7 45.Kf2 Ke7 46.Ke1 Kd6 47.Kd1 Kc5 48.Kc2 Kb4 49.Ng1 (49.Nf4 gf4 (49...ef4?! 50.Kd3–/+) 50.Be2 Nc5–+) 49...Nc5 50.Bd3 Nb7 (50...Nd3?! 51.Kd3 Bh2 52.Nh3+=) 51.Nh3 Be3 52.f4 (52.Kb2–+) 52...Nd6 (better is 52...gf4 53.g5 fg5 54.Ng5 hg5–+) 53.Ng5 fg5 54.fe5 Nc8 (54...Nc8 55.Be2 Kc5–+) 0–1. Blaszczak,Jan – Uznanski,J, corr, 1996.

8.d3 g5 9.Nfd2 Bg7 (9...0–0–0 10.c4=) 10.c4 Ng6 (10...0–0–0 11.d4 dc4 12.Nc4 Bc4 13.Bc4 ed4 14.Bd4=) 11.Qa4 (11.cd5 Bd5 12.Nc3 Be6+=) 11...Kf7 (11...c6 12.Nc3=) 12.c5 (12.cd5 Bd5 13.Nc3 c6+/–) 12...Qe7+= 13.Qc2 (13.Nc3 f5+=) 13...c6 (13...a5 14.Nc3+=) 14.Bh5 (14.d4 Rae8+=) 14...f5= 15.f4 g4 (15...gf4 16.ef4 Rhe8 17.fe5 Nde5 18.Nf3 Nf3 19.Bf3+=) 16.fe5 Qh4 (16...Qh4 17.e4 g3 18.Bg6 hg6+=; 16...Qg5 17.e4 Be5 18.Be5 Nde5 19.d4+/–). aschellen – VelvetVelour, internet, 2006.

8.d3 g5 9.d4 Rg8 =.

8.d4 e4 9.Nfd2 a5 =.

8.h3 0–0–0 9.d4 e4 (9...Ng6 10.c4 dc4 11.Qc2=) 10.Nfd2 f5 11.c4 dc4 12.Bc4 (12.Nc4 Bc4 13.Bc4 Nb6+=) 12...Nd5 13.Qb3 N7b6 14.Rc1 Nc4 15.Nc4 Qe7 16.Ne5 g5 17.b5 Bg7 18.Qa4 Kb8 19.Nc3 (19.Nd2 Qe8+=) 19...Nb6–/+ 20.Qc2 Be5 21.de5 Nc4 22.Rd1 (22.Nb1 g4 23.hg4 fg4+=) 22...h5 Black prepares g4 23.Rd8 (23.Ne2 g4–/+) 23...Rd8 24.Nb1 (better is 24.Rd1–/+) 24...g4–+ 25.hg4 (25.Bd4 gh3 26.b6 ab6–+) 25...Nb2 (25...hg4?! 26.Bd4–+) 26.Qb2 (26.Nc3 Nd3 27.gh5–+) 26...Rd1 27.Kh2 Qh4 0–1. Gross,Gerald – Sternik,Ryszard, EM b4–05–22, 2005.

7.0–0 Nh6

8.Nc3 Be7 9.e4 d4 10.Nd5 –/+.

8.Nc3 Nf7 9.d4 e4 10.Nd2 c6 11.f3 f5 12.fe4 fe4 13.Bg4 Nf6 14.Be6 Qe6 15.Ne2 Bd6 16.Nf4 Qd7 17.c4 0–0 18.cd5 cd5 19.Rc1 Rac8 20.Qb3 Be7 21.Nb1 Rc1 22.Rc1 Nd8?? (better is 22...Bd6–/+) 23.Nc3+/– a6 (23...Nc6!? 24.Ncd5 Nd5 25.Nd5 Rf7+/–) 24.Ncd5 Nd5 25.Nd5 Ne6?? (better is 25...Kh8 26.Ne7 Qe7+–) 26.Rc7! Nc7 (26...Qb5 27.Ne7 Kh8+–) 27.Nf6 (27.Nf6 Kh8 28.Nd7+–) 1–0. tightfist (2335) – wstanevans (2255), net–chess.com, 2014.

8.d3 a5 9.b5 =.

8.d3 Nf7 9.c4 dc4 10.dc4 Qc6 =.

8.d3 Nf7 9.Nbd2 a5 10.b5 =.

8.d3 Nf7 9.Nbd2 Nb6 10.c4 dc4 11.dc4 c5 12.Qc2 (12.b5 g5=) 12...Qc7 (12...cb4!? 13.ab4 Qb4+=) 13.b5= Be7 (13...0–0–0 14.a4+=) 14.Nh4 (14.a4 a5+=) 14...Rd8 (14...Nd6 15.f4=) 15.Rad1 g5 (15...Nd6!?=) 16.Nf5+/– White launches an attack 16...Bf5 (16...0–0 17.f4+/–) 17.Qf5 Qd7 18.Qc2 Qe6 19.a4 Kf8 (19...f5!?+/–) 20.a5+– Nd7 21.Bf3 Nd6 22.Bd5 Qg4 23.Ne4 Ne4 (23...Qf5 24.f4 ef4 25.ef4+–) 24.Be4 (24.Qe4?! Qe4 25.Be4 b6+/–) 24...Nb8 (24...Qh5 25.Bb7 Kg7 26.Rd5+–) 25.Bf5 (25.Bh7 Rd1 26.Rd1 Rh7–/+) 25...Qh5 26.Rd8 Bd8 27.f4 (27.Qe4 Qf7+–) 27...gf4 (27...ef4 28.ef4 g4 29.Qe4+–) 28.ef4 ef4 29.Qe4 Rg8 30.Qf4 Qe2 Threatening mate: Qxg2 31.Qf2 (better is 31.Qd6 Ke8 32.g3 Qb2 33.Re1 (33.Qb8?! Qd4 34.Kg2 Rg7+–) 33...Kf7 34.Qd5 (34.Qb8?! Qd4 35.Kh1 Re8 36.Qb7 Kf8 37.Re8 Ke8+–) 34...Kg7 35.Qb7 Kf8 36.Rd1+– (36.Qb8?! Qd2 37.Kf1 Rg7+–)) 31...Qf2 32.Kf2 Kg7 (32...Ba5 33.Bf6 Kf7 34.Bh7+–) 33.Bc3 (33.Re1 Rf8+–) 33...Bc7 (33...Re8!?+/–) 34.Re1+– Bh2? (better is 34...Rf8+–) 35.Re7 Kh6 (35...Kf8 36.Bf6 h5+–) 36.Bf6 1–0. Honos,Attila – Gaber,Jozsef, HUN tt2, 1998.

8.d3 Nf7 9.Nbd2 c6 10.c4 Qb8 11.cd5 cd5 12.Rc1 Bd6 (12...a5 13.b5=) 13.Ne1 (13.Qb3 Nd8=) 13...0–0 14.e4 (14.Nb3 Rc8=) 14...f5 15.Qb3 Nf6 16.Bf3 (16.f4 Qe8 17.ef5 Bf5=) 16...Ng5 (16...fe4 17.de4 Ng5 18.ed5 Nf3 19.Nef3 A) 19...Nd5? 20.Ng5 Qe8 21.Nde4+– (21.Ne6?! Qe6 22.Nf3 Be7+/–); B) 19...Bd5=) 17.ef5+= Nf3 (17...Bf7 18.Be2 e4 19.h4 ed3 20.Qd3+/–) 18.Nef3+/– Bf5 (18...Bf7 19.Ng5+/–) 19.Rfe1 Re8 Black prepares the advance e4 20.Ne4 Be4 21.de4 Kh8 (21...a5 22.Re2+/–) 22.ed5 (22.Ng5 h6 23.Nf7 Kg8 24.Nd6 Qd6+/–) 22...e4 23.Ng5 Bh2 24.Kh1 Ng4? (better is 24...Bf4 25.Nf7 Kg8+–) 25.Rc2?? (better is 25.d6 Rf8 26.Qe6 Qd6 27.Qg4+–) 25...Qf4+= 26.Nh3 Qh6 27.Bc1 (27.Qc4!? Qh5 28.Qb5+= (28.Re4? Re4 29.Qe4 Re8 30.Bg7 Kg7 31.Qd4 Be5–+)) 27...Qh5= 28.Bb2 (28.Be3 Be5=) 28...Qh4 (28...Rad8 29.Qc4+=) 29.Bd4 (29.Rce2 Bd6 30.Bd4 Nf6=) 29...Bf4 30.Qc3 Qh6?? (30...e3 31.Kg1+= (31.fe3 Rac8 32.Qc8 Qe1 33.Ng1 Nf2 34.Rf2 Rc8 35.Rf4 Qd1–+; 31.Bg7?! Kg8 32.Bd4 Nf2 33.Rf2 ef2 34.Bf2 Qh5=)) 31.Kg1?? (better is 31.Bg7!? Qg7 32.Qg7 (32.Nf4?! Qc3 33.Rc3 Nf2 34.Kg1 Ng4+/–) 32...Kg7 33.Nf4+–) 31...e3 (31...Bh2 32.Kf1 Bd6 33.Rce2=) 32.Be3 (32.fe3 A) 32...Ne3? 33.Rce2 Bg3 34.Re3 Be1 35.Qe1 Re3 36.Qe3 (36.Be3?! Re8 37.Bh6 Re1 38.Kf2 Rd1+/–) 36...Qe3 37.Be3+–; B) 32...Bh2 33.Kh1 Bg3+/–) 32...Be3 (32...Ne3!? 33.fe3 Be3 34.Kh1 Bb6=) 33.fe3+= Rac8 (33...Rac8 34.Qc8 Nf6+–; 33...Ne3?? 34.Rce2 Qd6 35.Qc5+–) 0–1. Kevlishvili,Nika (1785) – Bochnicka,Vladimir (1950), European Youth Chess Championship U12, 2016.

8.d3 Nf7 9.Nbd2 g5 10.c4+= h5 (10...g4 11.Nh4 Rg8 12.cd5 Qd5 13.d4+=) 11.cd5 Bd5 12.Qc2 (12.e4 Be6 13.d4 g4+=) 12...Qc6 (12...g4 13.Nh4+=) 13.Rfc1 Qc2 14.Rc2 Bc6 (14...g4 15.Nh4+=) 15.Nc4 (15.d4 g4 16.Nh4 a6+/–) 15...0–0–0 (15...g4 16.Nfd2+=) 16.Rac1+/– Ba4 17.Rc3 Kb8 18.Na5 (18.Nfd2 f5+=) 18...Bd6 19.Nd2 c6 (19...Nb6 20.Bf3 c6 21.Be4+=) 20.Nab3 (20.Nac4 g4+=) 20...f5 (20...Nb6 21.Nc5+=) 21.e4 f4 22.d4 (22.Nc4 Bb3 23.Rb3 g4+=) 22...ed4 23.Nd4 Black creates threats along the open d–file 23...Be5 (23...Nde5 24.N2b3+=) 24.N2f3 (24.Rd3 g4+=) 24...Bf6= 25.Bd1 (25.Rd3 g4 26.Ne1 Rhe8=+) 25...Bd1 26.Rd1 g4 27.Ne1 Nde5 (27...Rhe8 28.Rcd3=) 28.Rc5 (better is 28.Bc1 Ng6 29.Rcd3=) 28...Ng5 (28...Rhe8 29.f3=) 29.Nc6=+ Nc6 30.Rd8 Rd8 31.Bf6 Rd1 32.Kf1 Ne4 33.Rf5 g3 (33...Nf6 34.Rf6 Rd4 35.Rf5+/–) 34.hg3= (34.Rf4? gh2 (34...Nf6?! 35.hg3 Rd6 36.Nf3–/+) 35.Rh4 Nf6 36.Rh2 Nd4–+) 34...fg3 35.Bh4 (35.f4 Nf6 36.Rf6 Nd4=) 35...gf2 (35...Nd4 36.Rf8 Kc7 37.Rf7 Kc6 38.fg3=+) 36.Bf2 Nf2 37.Kf2 Rd2 38.Kf1 Ra2 39.b5 (39.Rh5 Ra3 40.b5 Na5=) 39...Na5= 40.Rh5 Nc4 41.Rh4 (41.a4 Ne3 42.Kg1 Kc7=) 41...Ne3 42.Kg1 Ra3 43.Rh3 (43.Re4 a5=) 43...Nc4 (43...Kc7 44.Kf2 Nd1 45.Kf1=+) 44.Nf3 (44.Rh7 Rb3 45.Rh4 Ne3=+) 44...Kc7 45.Nd4 (45.Rh4!? Rc3 46.Rh6=) ½–½. Kjaerstad,Eivind J – Arppi,Heikki, corr Nordisk 5–lands, 1994.

8.d4 0–0–0 =.

7.d3 Nb6

8.0–0 Na4 9.Bc1 a5 10.c4 Qd7 11.ba5 (11.c5 Bf7=) 11...dc4 12.dc4 Qd1 13.Bd1 Nc5 14.Nbd2 Ne7 15.Nb3 White threatens to win material: Nb3xc5 15...Nc6 Black threatens to win material: Nc6xa5 16.Nfd2 (16.Nc5 Bc5 17.a6 Ra6+=) 16...Na5 (16...Nb3!? 17.Nb3 Bc4–/+) 17.Na5+= Ra5 18.Nb3 (18.a4 b6=) 18...Ra6 (18...Nb3 19.Bb3 Kf7 20.Bb2+=) 19.Nc5 Bc5 The bishop feels good on c5 20.Bd2 Ke7 Black loses the right to castle (20...Bc4 21.Bh5 Ke7 22.Rfb1–/+) 21.Be2 Rha8 22.Rfb1 (22.Rab1 Rd6 23.Bc3+=) 22...Rd6 (better is 22...Ra3 and the scales tip in favour of Black 23.Bc3 Bf5 24.Ra3 Ra3–/+ (worse is 24...Ba3 25.Ra1+/–)) 23.Bb4 Bb4 24.Rb4 b6 25.Rab1? (better is 25.Rb2+= is a viable option) 25...Rd2–+ 26.Kf1 (better is 26.R1b2 Rb2 27.Rb2 Ra3 28.g4–+) 26...Rad8?? not a good decision, because now the opponent is right back in the game (better is 26...Ra3!? 27.Rd1 Rc2–+) 27.Ke1 (27.c5 bc5 28.Rb7 R8d7+=) 27...Rc2 (27...Ra2!? 28.R1b2 Ra3–+) 28.Rd1 Rd1 29.Kd1 Ra2 Black threatens to win material: Ra2xa3 30.Ra4 Kd6 31.Ra7 (31.h4 Bf5 32.e4 Bg6+=) 31...Ra1–/+ 32.Kd2 Rh1 (32...Rg1 33.c5 bc5 34.Ra6 Ke7 35.Bf3–/+) 33.a4 (33.c5 bc5 34.Ra6 c6–/+) 33...Rh2–/+ 34.c5 (34.Bf1!?–/+) 34...bc5 35.a5? (better is 35.Bf3–/+) 35...Bd5 (35...Rg2 and Black can already relax 36.Ra6 c6 37.Ra8 Rf2 38.Ke1–+) 36.Ra6 Kd7 37.Bb5 Kc8 (37...Ke7!? 38.Ra7 Kd8 39.Ke2–+) 38.Bc6 Bc6 39.Rc6 Rg2 40.Kc3? (better is 40.Ke2–+) 40...Kb7 (40...Rf2!? makes it even easier for Black 41.Rc5 h5 42.Kd3–+) 41.Rc5 Rf2 42.a6 Ka6 43.Rc7 Rg2 44.Kd3 (44.Rc8 Kb5–+) 44...h5 45.Ke4 Rg4 46.Kf3 (46.Kf5 is not the saving move 46...Rg5 47.Ke4 h4–+) 46...e4 47.Ke2 (47.Kf2 doesn't get the cat off the tree 47...Kb6 48.Rc8 h4–+) 47...Kb6 (47...h4!? seems even better 48.Kf2–+) 48.Rc8 (48.Rc1 cannot change destiny 48...Rg2 49.Kf1 Rg3–+) 48...h4 0–1. Svensek,Marjan (2050) – Krumpacnik,Domen (2380), SLO Cup final, 2002.

8.0–0 a5 9.ba5 Ra5 10.Qd2 +=.

8.Nc3 a5 =.

8.Nbd2 Na4=+ 9.Rb1 Nb2 10.Rb2 c6 (10...a5 11.0–0=) 11.0–0 Nh6 (11...a5 12.c4=) 12.c4 Be7 13.Nb3 (13.Qc2 0–0=) 13...0–0 (13...0–0–0 14.Nc5=) 14.Nc5 Bc8 15.cd5 (15.d4 b6 16.Nb3 a5=) 15...cd5 16.e4 (16.d4 b6 17.Na4 Qe6=) 16...b6=+ 17.Nb3 (17.Na4 d4=+) 17...Bb7 18.Nbd2 (18.Qb1 Rac8=+) 18...Rad8 (18...Rac8 19.Qb3=+) 19.Qb3 Kh8 (19...Nf7 20.Rc2=+) 20.Rc1 f5 21.Qc2 (better is 21.ed5!? Bd5 22.Nc4=+) 21...Rc8–+ 22.Qb1 Rc1 23.Qc1 fe4 24.de4 de4 25.Ne1? (better is 25.Nc4!? Qf6 26.Nfe5 Qf2 27.Kh1–+) 25...Qd4–+ 26.Ne4 (26.Kh1–+) 26...Be4 (26...Qe4?! 27.Bf3 Rf3 28.Nf3–+) 27.Bf3 (27.Nf3 Bg5! 28.Qa1 Bf3 29.gf3 Bh4–+) 27...Bg5! 28.Qg5 (28.Qa1 Bd2 29.Ra2 Bc3–+) 28...Qb2 29.Qe7 Rg8 (better is 29...Rf4 30.Qd8 Ng8 31.Qd1–+) 30.h3 (30.Be4 Qe2 31.Bd3 Qe1 32.Bf1 Nf5–+) 30...Bf3 (30...Qa1!? 31.Kh2 Bf5 32.Bd5 Qe1 33.Bg8 Ng8 34.Qd6–+) 31.Nf3 Qc1 32.Kh2 Qf4 (33.Kg1 Rc8–+) 0–1. Emberger,Rene – Jeric,Simon (2325), Open Feffernitz AUT, 2001.

7.d4 e4

8.Nfd2 a5 9.b5 =.

8.Nfd2 Nb6 9.Nb3 Na4 (9...Nc4 10.Bc4 dc4 11.Qh5 Bf7 12.Qb5 c6 13.Qb7–+) 10.Ra2 (10.Bb5 Bd7 11.Qh5 g6–+) 10...b6 (10...Nb2 11.Rb2 0–0–0 12.Nc5=) 11.Ba1 (11.Bb5 Bd7 12.c4 Bb5 13.cb5 a6 14.ba6 Qd7=) 11...Qd7 12.Nc3 Nc3 13.Bc3 Bd6 14.0–0 Nh6 15.Ba1 (15.b5 0–0–0=) 15...0–0 16.Nd2 Rae8 (16...Ng4 17.h3 Nh2 18.Re1+=) 17.c4= c6 18.Rc2 Ng4 19.g3 (19.h3 Nh2 20.Re1 a5=) 19...Nh6 (19...f5 20.c5 Be7 21.Bb2+=) 20.cd5 (20.f3 Nf5 21.Rc3 ef3 22.Bf3 dc4 23.Nc4 Bc4 24.Rc4 Ne3–+) 20...cd5 (20...Bd5 21.Nc4+=) 21.Rc3 (21.f3 Nf5 22.Rc3 ef3 23.Bf3 a5 24.ba5 ba5=) 21...Rc8 (21...a5 22.ba5 ba5 23.f3=) 22.Qb3 (22.f3 Nf5 23.Qb3 b5=) 22...Rc3+= 23.Bc3 Rc8 24.Rc1 Qf7 25.Qd1 Qg6 (25...Nf5 26.Qa4+=) 26.Bb2 (26.Qa4 Rc7=) 26...Rc1+= 27.Qc1 Qe8 (27...Nf5 28.Qc6=) 28.Qc2 Ng4 29.Nf1 (29.h3 Nh6 30.Kg2 Qd7+=) 29...f5 (29...a5 30.h3 Nh6 31.ba5 ba5 32.Kg2+=) 30.Kg2 (30.h3 Nf6+=) 30...Bd7 (30...a5 31.ba5 ba5 32.f3 ef3 33.Bf3+=) 31.h3 Nf6 32.Ba6 g5 (32...Qh5 33.Bb7+=) 33.Bc1 (33.Nd2 f4 34.Bb7 Bh3 35.Kh3 Qd7 36.Kg2 Qb7–+) 33...h5 Black prepares the advance g4 (33...Qh5 34.Be2 g4 35.hg4 fg4 36.b5–/+) 34.Bd2 h4 35.Be2 g4 (35...b5 36.gh4 gh4 37.f4+=) 36.hg4 (36.gh4 gh3 37.Kh1–/+) 36...fg4+= 37.gh4 Qh5 38.Be1 (38.Ng3 Qh4 39.Bf1 Kf8–/+) 38...Qh4–/+ 39.Kg1 Qh3 40.Qb3 Kf7 41.a4 White prepares b5 (41.b5 Ke8–/+) 41...Ke6 (41...Ke8 42.Ng3–/+) 42.Qd1 Ke7 43.Ng3 Nh7 (43...Ke8 44.b5–/+) 44.Bf1 Qh6 45.b5 Ng5 46.Bg2 (46.Kg2 Nf3 47.Qf3 gf3 48.Kg1 Bg3 49.fg3 Qe3 50.Bf2 Qb3–+) 46...Nf3–+ (46...Nf3 47.Bf3 gf3–+) 0–1. Mus,Roman – Sokolik,Bogdan, corr 1.AMM Poland, 1992.

8.Nfd2 c6 9.c4 Qc7 10.Nc3 Nh6 (10...a5 11.cd5 cd5 12.Nb5+/–) 11.Rc1 Qb8? (11...dc4 12.Nde4 Rd8 13.Bh5 Nf7 14.0–0+=) 12.Qb3 (12.cd5 Bd5 13.Nde4 Nb6+–) 12...Nb6 (12...dc4 13.Bc4 (worse is 13.Nc4 b5+=) 13...Bc4 14.Nc4+=) 13.cd5 (13.c5 Nd7 14.Nce4 Be7+–) 13...Nd5 14.0–0 (better is 14.Bc4!? Qd8 15.Nde4 Nc3 16.Bc3 Bc4 17.Qc4+–) 14...Nf4 15.Qc2 Ne2 16.Ne2 Ng4 17.g3 f5= 18.Qa4 Bd7 19.Nc3 Qd6 20.Kg2 c5 21.Nb5? Qb6–+ 22.dc5 Qb5 23.Qb3 Qe2 24.Nc4 Qf3 25.Kg1 f4 26.Nd2 Qe2–/+ 27.Ne4 fe3 28.Rce1 Qf3 29.Qd5= Qf5 30.Qb7 Rc8 31.h3 Bc6? 32.hg4+– Qg4 33.Re3 Bb7 34.Nf6 (34.Nf6 Kd8 35.Ng4+–) 1–0. Osmak,Iulija – Harazinska,Ewa, EYg10, Herceg Novi MNE, 2008.

8.Nfd2 f5 9.c4 c6 (9...Ngf6 10.c5 Qe7 11.0–0+=) 10.Nc3 Ngf6 11.Rc1 Be7 12.cd5 Nd5 13.Nc4 Qb8 Black prepares the advance f4 (13...Qc7 14.Bh5 g6 15.Be2=) 14.Nd5 cd5 15.Nd2 (15.Ne5 Ne5 16.de5 0–0=) 15...f4 (15...0–0 16.Nb3=) 16.Nb3 (16.Bg4!? Qd6 17.Be6 Qe6 18.Qh5 g6 19.Qe2=) 16...fe3= 17.fe3 0–0 18.g3 (18.Nc5 Nc5 19.dc5 Qc7=) 18...Bg5 19.Rc3 Nb6 (19...Qd8 20.Qd2+=) 20.Bc1 (20.Nc5 Bh3=) 20...Na4+= 21.Rc2 Qe8 22.Bf1 (22.Rf1 Rf1 23.Bf1 Rc8+=) 22...Rc8–/+ 23.Nc5 Nc5 24.bc5 b6 25.cb6 ab6 26.Rc8 (26.Be2 Bh3 27.Ba6 Rc2 28.Qc2 Qa8–/+) 26...Qc8 27.Bd2?? (27.Be2 Bh3 28.Qd2 Qc7–/+) 27...Rf3 (better is 27...Bg4 28.Bh3 Bh3–+ (28...Bd1?! 29.Bc8 Rc8 30.Kd1+=)) 28.Be2–/+ Re3 (28...Rf7 29.Qb3+=) 29.0–0+= Bh3 (29...Qd8 30.Be3 Be3 31.Kg2+=) 30.Re1–/+ Qf8 (better is 30...Bh6–/+) 31.Be3? (31.Qc1 Re2 32.Re2–+) 31...Be3–+ 32.Kh1 Qf2 The mate threat is Bg2 (32...Qa3 33.Bg4 Bg4 34.Qg4+=) 33.Rg1 Bd4 (33...Qg1?! 34.Qg1 Bg1 35.Kg1–/+) 34.g4 Qg1 35.Qg1 Bg1 36.Kg1 h5 (better is 36...e3 37.g5–+) 37.Kf2 (37.gh5 d4 38.Kf2–+) 37...Bg4 (37...hg4?! 38.Ke3–+) 38.Bb5 Kf7 (38...d4 39.Ke1–+) 39.Ke3 g5 40.Kd4 Be6 41.Ke5 h4 (41...g4 42.Kf4–+) 42.Kd6 (42.Be2 g4 43.Bf1 h3–+) 42...d4 (42...Kf6 43.Kc6–+) 43.Kc7 (43.Ke5 d3 44.Ke4–+) 43...g4 44.Kb6 (44.Bf1 b5 45.Kb7–+) 44...g3 45.hg3 hg3 46.Bf1 d3 47.a4 d2 48.Be2 g2 49.Bb5 g1Q 50.Ka5 (50.Ka6 d1Q 51.Kb7 Qd8 52.Be8 Ke8 53.a5 Qc8) 50...Qc5 51.Ka6 Bc8 0–1. Svitek,Volker – Melzer,J, Prague Cedok op, 1996.

6.Be2 Be7

7.0–0 a5 8.b5 Nd7 9.d4 Nh6 10.c4 dc4 +=.

7.0–0 Nh6

8.Nc3 0–0 9.d3 a6 10.h3 c5 11.bc5 Qc5 12.d4 Qb6 (12...Qd6 13.e4 de4 14.Ne4=) 13.Rb1 (13.de5!? Nc6 14.Qd2+/–) 13...Qa5 14.de5 Ba3?? (better is 14...fe5!? 15.Ne5 Bf6+=) 15.Ba3 (15.Ra1!? Bb2 16.Ra5 Bc3 17.Rd5 Nf7+–) 15...Qa3 16.Nd5 Nc6 17.ef6 Rf7? (17...Rad8 18.c4 Rd7+–) 18.Ng5 Rd7 (18...Bd5 19.Qd5 Qa5+–) 19.Ne6 Qa2 20.f7! Nf7 (20...Rf7 21.Ndc7 Combination; 20...Kf7 21.Nec7 Combination; 20...Nf7 21.Nf6 Double attack) 21.Nf6! gf6 22.Qd7 Qc2 (22...Nce5 23.Qe7 Qc2 24.Rb7+–) 23.Bh5 Ncd8 24.Bf7 (24.Qe8) 24...Nf7+– 25.Rb7 (25.Rfc1 Qe4 26.Rc8 Rc8 27.Qc8 Nd8 28.Qd8 Kf7 29.Qd7 Kg6 30.Qe8 Kh6 31.g4 Qe6 32.Qe6 Kg6 33.Qf5 Kf7 34.Rb7 Ke8 35.Qc8) 25...Qg6 26.Rfb1 Ne5 27.Rb8 Rb8 28.Rb8 1–0. douglasricardo (2245) – lefou (1915), net–chess.com, 2011.

8.d3 0–0 9.c4 c6 10.Nc3 dc4 11.dc4 Qd1 12.Rfd1 Nd7 13.Nd2 Rfd8 14.Rac1 Nb6 15.c5 Nd5 16.Nd5 Bd5 (worse is 16...Rd5 17.Bc4 Kf7 18.Bd5 cd5 19.b5+–) 17.Bc4 Nf7 18.e4 Bc4 19.Nc4 Rd1 20.Rd1 Rd8 21.Rd8 Nd8 22.Bc1 Kf7 23.g3 Ke6 24.f4 ef4 25.gf4 f5 26.e5 g6 27.Kf2 Kd5 28.Nd6 b6 29.cb6 ab6 (29...Bd6?? 30.ba7 (worse is 30.ed6 ab6 31.Be3 c5–/+) 30...Be7 31.a8Q+–) 30.Nc8 Bh4 31.Kf3 b5 32.Be3 Kc4 33.Bb6 (better is 33.Na7!?+=) 33...Ne6+= 34.Be3 h6 (34...Kb3 35.Na7+=) 35.h3= Kb3 36.Na7 Ka3 37.Nc6 Be1 38.Bc5 (38.Ne7 Nf8 39.Ng8 h5+=) 38...Kb3 (38...Bd2 39.Nd4 Nd4 40.Bd4 Bb4 41.Ba7–+) 39.Na5 (39.Ne7 Bb4 40.Bb4 Kb4 41.Ng6 Kc3+=) 39...Kc3 40.Nc6 Bd2 41.Be3 Be3 42.Ke3 g5 43.fg5 hg5 44.Kf3 Kc4 45.Ke3 (45.Ne7 Nd4 (45...Kb4?! 46.Nf5 Kc5 47.Ke4+=) 46.Ke3 f4 47.Ke4 Nb3–+) 45...Kd5–+ 46.Na7 Nc7 47.e6 (47.Kf3 Ke5 48.Nc6 Kd5 49.Ne7 Ke6–+) 47...Ke6 (better is 47...Kc4!?–+) 48.Kd4 Kf6 49.Nc6 Ne6 50.Ke3 Nf4 51.Nd4 Nd5 52.Kf3 Nc3 53.Nc6 Ke6 54.Nd4 Ke5 55.Nc6 Kf6 56.Nd4 Kg6 57.Nc6 Kh5 Black prepares g4 58.Ne7 g4 (58...f4 59.Nf5–+) 59.hg4 fg4 60.Kg3 Kg5 61.Nc6 Ne4 62.Kg2 Kf4 63.Nd4 Nd6 64.Ne6 Ke5 65.Nc7 Kf5 66.Kg3 Ne4 67.Kg2 Nc3 68.Kg3 ½–½. Farkas,Miso (2130) – Medar,Zeljko (2215), Vrbas SER, Vojvodina 2nd League, 2011.

8.d3 0–0 9.Nbd2 e4?? (better is 9...a5=) 10.de4+– de4 11.Ne4 Qd1 12.Rad1 Nc6 13.Bd4 b6 14.c4 Nd4 15.Nd4 (worse is 15.Rd4 a5 16.c5 ab4 17.ab4 Nf5+/–) 15...Bf7 16.Nc6 Bd6 (better is 16...Rfe8+–) 17.Nd6 cd6 18.Rd6 Rae8 (18...Nf5 19.Rd2+–) 19.Rfd1 Re4 20.c5 bc5 21.bc5 Ra4 22.Rd8 (better is 22.Ne7 Kh8 23.Rd8 Rd8 24.Rd8 Ng8 25.c6 Ra3 26.c7 Ra1 27.Bf1+–) 22...Ra3 (22...g5 23.Rf8 Kf8 24.Rd3+–) 23.h3 (better is 23.Ne7 Kh8 24.Rf8 Ng8 25.Rf7 Ne7 26.Re7 h5+–) 23...a5?? (23...Be6 24.R8d6 Bb3 25.Rb1+–) 24.Rf8 (better is 24.Ne7 Kh8 25.Rf8 Ng8 26.Rdd8 h5 27.Rf7 Ra1 28.Kh2 Rb1 29.Rg8 Kh7 30.Rfg7 Kh6 31.Nf5) 24...Kf8 25.Rd8 Be8 26.Ra8 a4 27.Nd4 Kf7 (27...Ke7 28.Ra7 Kf8 29.c6 Bc6 30.Nc6+–) 28.c6 (28.Bc4!? Kg6 29.Re8 Rc3+–) 28...Rc3 29.Ra7 Kg6 30.c7 Bd7 31.Kh2 a3 (31...Ng8+–) 32.Kg3 (better is 32.Bb5 Bc8 33.Be8 Nf7 34.Ne2+–) 32...Nf5 33.Nf5 Bf5 34.Bf3 Be6 35.h4?? (better is 35.Ra6 Kf7 36.Kf4+/–) 35...a2–/+ 36.h5 (36.Ra5 Rc7 37.Bg4 Bg8–+) 36...Kg5 37.Ra6 (better is 37.Ra5 f5 38.e4–+) 37...Bf7?? (37...Rc7 38.Bg4 Bf7 39.f4 Kh6 40.Kh4–+) 38.Ra5?? (38.Bc6 Be6 39.Bf3 Rc7 40.Bg4–+) 38...Kh6–+ 39.Ra7 Rc1 (better is 39...Rc7 40.Ra8–+) 40.Bd5?? (better is 40.Bg4 Rc7 41.Rc7=) 40...Bd5–+ 41.c8Q (41.Ra5 Rc7 42.e4 Bb3–+) 41...Rc8 42.Ra5 (42.e4 Ra8 43.Ra2 Ba2–+) 42...Bg8 (42...Ra8!? 43.Rd5 a1Q 44.Rc5–+) 43.f4 Rc1 44.Kh4 a1Q 45.Ra1 Ra1 46.g4 g5 47.fg5 fg5 48.Kg3 Bd5 0–1. workchess (2215) – lefou (1915), net–chess.com, 2011.

8.d4 e4 9.Nfd2 c6 10.c4 0–0 11.Nc3 f5 12.Rc1 Qd8 13.Qb3 dc4 14.Bc4 White gets deadly initiative (worse is 14.Nc4 b5–/+) 14...Bc4 15.Nc4 Kh8 16.Ne5 (16.Rfd1 b5 17.Na5 Qd6+/–) 16...Nd7 17.Rfd1 Qc7 18.Nd5 Qd8 (18...Qd6 19.Nd7 Qd7 20.Nf4+=) 19.Nf4+/– (19.Nf4 Ne5 20.de5+/–) 1–0. Kuhlmann,Antonius Egidius J – Polee,JRB, corr, 1986.

7.d4 Nd7

8.0–0 0–0–0 =.

8.0–0 Nh6 9.c4 dc4 10.Qc2 a5+=.

8.Nfd2 Qc6!? =.

8.Nfd2 e4 9.c4+= c6 10.Nc3 Nh6 11.Qb3 (11.cd5 cd5 12.Nb3 0–0+=) 11...0–0 (11...f5!?=) 12.c5+/– Qc7 13.Nce4! f5 (13...de4 14.Qe6) 14.Ng3 (14.Nc3 Rf6+/–) 14...f4 (14...Ng4 15.h3 Ngf6 16.Bd3+/–) 15.ef4 (15.Nh5 Bg5 16.Nf3 fe3 17.Ng5 ef2 18.Kf1 Bf5+–) 15...Qf4+= 16.Nf3 Ng4 (16...Rae8 17.0–0+=) 17.0–0 Qh6 (17...Rae8 18.Bc1 Qf6 19.Qd3+/–) 18.h3 Ngf6 19.Bc1 Qg6 20.Ne5 (20.Qe3 Ne4+/–) 20...Qe8 21.f4 Bf7 (21...Bd8 22.b5+/–) 22.Bd2 (22.Qe3 Bg6+–) 22...Kh8 (22...Rd8 23.Rae1+–) 23.Rae1+– Bg8 (23...Bg6 24.f5 Bf7 25.Qe3+–) 24.Qe3 Ne5 (24...Ne4 25.Ne4 de4 26.Qe4+–) 25.fe5 (< 25.Qe5 Qf7+/–) 25...Nd7 26.Nf5 (26...Be6 27.Ng7 Kg7 28.Qh6 Kh8 29.Qe6 Bc5 30.Rf8 Bf8 31.Qf5+–) 1–0. Kossobudzki,Robert – Baluch,Wieslaw, corr 2. AMM Poland, 1993.

8.de5 fe5 9.0–0 (9.Nbd2 Rd8=) 9...Ngf6 10.Nbd2 (10.c4 dc4 11.Qc2 a5=) 10...0–0 (10...a5 11.c4 ab4 12.ab4 Ra1 13.Qa1 Qb4 14.Rb1+=) 11.c4 (11.Ng5 Bf5=+) 11...c6 12.Ng5 (12.Bd3 e4 13.c5 Qc7=) 12...Bf7 (12...Bf5 13.e4 Ne8 14.cd5 cd5 15.Ndf3 de4 16.Qb3 Kh8 17.Rfd1–/+) 13.Nf7 Rf7 14.cd5 Nd5 (14...cd5 15.Rc1=) 15.Bc4 (15.Nc4 Qf6+=) 15...e4 (15...b5 16.Bb3 e4+/–) 16.Ne4+/– Qg6 (16...Qe6!? 17.Qc2 Ne5+/–) 17.Bd5 cd5 18.Qd5 Nb6 (18...Rd8 19.Qb7 Nb6 20.Rac1+– (20.Qa7?! Nc4+=)) 19.Qd3 (19.Qb7 Bh4 20.Qa6 Qe4=+) 19...Rd8 20.Bd4 Nd5 (20...Bd6 21.f4+–) 21.Rad1 (21...b6 22.Rfe1+–; 21.Rfd1 b6+–) 1–0. Mus,Roman – Baluch,Wieslaw, corr 2. AMM Poland, 1993.

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

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