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TESTF180 Release 2017-09-20
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(c) Marek Trokenheim

1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0–0 5.e3 d5 6.cd5 Nd5 7.Nf3 Re8 8.Bb2 Nf4

(...)

9.a3 Ba5?? 10.Qa4+– Ng2 11.Bg2 c6 12.Rg1 Bf5 13.Qd4 Threatening mate... how? 13...Qd4 14.Bd4 Nd7 15.Nh4 Bg6 (better is 15...Bc2+–) 16.Ng6 hg6 17.Bh3 Ne5 18.Be5 (18.Ke2!? Rad8+–) 18...Re5 19.Bf1 b5 20.Nc3 a6 21.Bg2 (21.Bg2 Rd8 22.Bc6+–) 1–0. Markus,Robert – Gedigk,Detlef, corr SOK–88–18, 1988.

9.a3 Nd3?? 10.Bd3+– Qd3 11.ab4 Bg4 12.Ne5 Bd1 13.Nd3 Bc2 14.Ke2 Nc6 15.b5 Na5 (15...Bd3 16.Kd3 Ne5 17.Be5 Re5+–) 16.Ra5 1–0. pcmvr – lucianobalz (2125), net–chess.com, 2011.

9.a3 Ne6?? 10.ab4+– g6 11.Qb3 Re7 (11...Nd7+–) 12.Qc3 Nc6 (12...f6 13.Qf6 Rg7 14.Qd8 Nd8 15.Bg7 Kg7+–) 13.Qh8 1–0. pcmvr – prakeshdesai, net–chess.com, 2011.

9.a3 Bf5?? 10.ab4+– Bd3 11.g3 Bf1 12.gf4 Bg2 (12...Bd3+–) 13.Rg1 Bf3 14.Rg7 Kf8 15.Qf3 Re6 (15...c6+–) 16.f5 Rd6 (16...Rb6 17.Qg4 Ke8 18.Rg8 Kd7 19.Rd8 Kd8 20.Qg8 Ke7 21.f6 Rf6 22.Bf6 Kf6 23.Qc8+–) 17.Rh7 Qg5 (17...Ke7 18.f6 Kd7 19.Qf5 Kc6+–) 18.Rh8 Ke7 19.Qe4 Kd7 20.Qe8 1–0. pcmvr – rogeliovargas (2345), net–chess.com, 2011.

9.Qa4 Bd6 10.Nc3 Bd7 11.Qb3 b6 12.Kd1 Nh5?? (12...Be6 13.Qc2 Ng6 14.Ne4+=) 13.h4?? (better is 13.Qd5 Nc6 14.Qh5+–) 13...Be6 14.Qa4 Nc6 (14...Nc6 15.Qc6 Nf6+–). prakeshdesai – lucianobalz (2125), net–chess.com, 2011.

9.Bc3 Bd6 10.d3 Ne6 11.Be2 Nc6 12.0–0 h5 13.h3 a5 14.a4 Nc5 15.Na3 Ne7 16.Ne5?? (16.Nc4 b6+=) 16...f6?? (better is 16...Nd5 17.Bd2 Be5–+) 17.Nec4+/– Qd7 (better is 17...h4!?+/–) 18.Bh5 Rd8 19.Na5 b6 20.d4 ba5 21.dc5 Bc5 22.Qb3 Kh8? 23.Rfd1 Qd1?? 24.Rd1 Rd1 25.Bd1 Bd6 26.Nc4 Bb4 27.Bb4 ab4 28.Qb4 Nd5 29.Qf8 Kh7 30.Bc2 Kh6 31.Qh8 Kg5 32.Qg7 Kh5 33.Qf7 Kg5 34.Qd5 (34.Qd5 Kh6 35.Qf7 f5 36.Ne5 Ra6 37.h4 Bb7 38.g4 Ra4 39.Qg6; 34.Qg6 Kh4 35.Qh6) 1–0. lucianobalz (2125) – jomunoz (1870), net–chess.com, 2011.

9.Qe2?? Ne2–+ 10.Be2 Bf5 11.0–0 Nc6 12.Nc3 Bg4 13.Rac1 Bf3 14.Bf3 Qd2 15.Ne4 (15.Na4 Bd6 16.Rfd1 Bh2 17.Kh2 Qf2 18.Rc4–+) 15...Qb2 16.Rb1 Qa2 17.Ng5 h6 18.Ne4 Rad8 19.Ra1 Qb3 20.Rfb1 Qe6 21.Ng3 Rd2 (21...a5 22.Rc1–+) 22.h3 (22.Bc6 Qc6 23.Rb4 Re3–+) 22...a5 23.Bc6 Qc6 24.Rc1 Qd6 25.Nf5 Qa6 0–1. rogeliovargas (2345) – lucianobalz (2125), net–chess.com, 2011.

9.Be2?? Ng2–+ 10.Kf1 Bh3 11.a3 (11.Kg1 Nh4 12.Bf1 Bf1 13.Nh4–+) 11...Ne3 12.Ke1 Ng2 (12...Ng2 13.Kf1 Nh4 14.Kg1 Nf3 15.Bf3 Qg5 16.Bg4 Re1 17.Qe1 Qg4) 0–1. prakeshdesai – pcmvr, net–chess.com, 2011.

9.Be5 Ng6 10.Bc3 +=.

9.Ne5 Qd5?? 10.ef4+/– Nc6 11.Be2 (11.Qh5!? g6 12.Qe2+=) 11...Qg2+= 12.Bf3 Qh3 13.Qb3 (13.Qe2 Bf5 14.Rg1 Qh2 15.Rg7 Kg7 16.Ng4 f6 17.Nh2 Re2 18.Ke2 Re8 19.Kf1 Bd6+/–) 13...Be6= 14.Qe3 f6 15.Rg1 (better is 15.a3!? Bc5 16.d4 (16.Qc5?? Ne5 17.Be5 Qf3–+) 16...Nd4 17.Bd4 Bd4 18.Qd4 fe5 19.Qc3 ef4 20.Kd1–/+) 15...fe5= 16.Bc6 bc6 17.Rg7 Kf8 18.Be5 Qh2 19.Qe4 (19.Rc7 Qh1 20.Ke2 Bc4 21.d3 Rad8–+) 19...Bd6 20.Rh7 (20.Qh7 Be5 21.Qh2 Bg7+= (21...Ba1? 22.Rc7 Ba2 23.Kf1 Bc4 24.Kg2 Bd5 25.Kg3+–)) 20...Qg1 21.Ke2 Be5 22.fe5 Bc4 23.Ke3?? (23.d3 Re5 24.Qe5+=) 23...Re5–/+ 24.Qe5 Re8 25.Rh8 Bg8 26.Qe8 Ke8 27.Nc3 Qa1 28.Rg8 Kd7 29.Rg7 Kc8 30.Ke2 Qh1 31.Rg4 Qh5 32.f3 Qh2 33.Ke3 Qh6 34.Ke2 Qe6 35.Re4 Qh3 36.Rc4 Qg2 37.Ke3 Qg1 38.Ke2 Qh2 39.Ke3 Qh6 40.Ke2 Kb7 41.Ne4 Qh2 42.Ke3 Qg1 43.Kf4 a5 44.Nc5 Kb6 45.a4 Qe1 46.d3 Qe8 47.Kf5 Qf8 48.Ke4 Qe7 49.Kf4 Qf6 50.Ke3 Qe5 51.Ne4 Qa1 52.Nc5 Qg1 53.Ke4 Qg6 54.Ke3 Qg5 55.f4 Qg1 (55...Qf5 56.Rc1–/+) 56.Ke4+= Qg4 57.Ke5 Qg7 58.Kf5 Qh6 59.Ke5 Qg6 60.f5 Qd6 61.Ke4 Qg3 62.Nd7 Kb7 63.Ne5 Attacks the isolani on c6 63...Qg2 64.Kf4 Qh2 65.Ke4 Qh4 66.Kf3 Qd8 (66...Qh5 67.Kf4+=) 67.d4 (67.Rc6?? Qd5 68.Kf4 Qd4 69.Kg5 Qe5–+) 67...Kc8 68.Kg4 c5 69.dc5 Qd5 70.Kf4 Qd2 71.Kf3 Qd1 72.Kf4 Qf1 73.Kg5 Qg2 74.Rg4 Qd5 75.Ng6 Kd8 76.Rh4 Qc5 77.Re4 Qc6 (77...Qc2 78.Rf4 Qg2 79.Kh6=) 78.Re7= Qg2 (78...Qa4?? 79.f6 Qb4 80.Kh6+–) 79.Kf6 Qf2 (79...Qc2 80.Re5 Qa4 81.Kg7 Qd7 82.Ne7+=) 80.Re5= c5 81.Kg7 c4 82.f6 c3 83.f7 c2 84.Re1!? Qe1 ½–½. Morley,Paul (2230) – Eschert,Uwe (1805), WC17/WS43 ICCF, 2009.

9.Ne5 Be6 10.ef4 (10.a3 Bf8 (10...Bd6 11.ef4 f6 12.d4 fe5 13.fe5 c6 14.Qc2+/–) 11.ef4 f6 12.d4 fe5 13.de5 Qd1 14.Kd1 Bc5+=) 10...f6 11.f5 (better is 11.a3!? Ba5 (11...Bf8 12.d4 fe5 13.de5 Qd1 14.Kd1 Bc5+=; 11...Bd6 12.d4 fe5 13.fe5 c6 14.Qc2+/–) 12.Qa4= Bb6 13.Bc4 fe5 14.fe5+=; 11.Qa4 a5 12.a3 Bd6 13.d4 fe5 14.fe5+/–; 11.Bc3 a5 12.Qc2 fe5 13.fe5 Bd5 14.f4=) 11...Bd5–/+ 12.Qg4 (12.Qe2 Nc6 13.f4 fe5 14.fe5–+) 12...Nc6 (12...Bd6 13.Be2 Be5 14.Be5 Re5 15.Nc3+=) 13.Be2+= Ne5 (better is 13...fe5!? 14.Nc3+= (14.Bb5 Bc5+=)) 14.Be5+= Re5 15.Qb4 Bg2 16.Rg1 Qd3 17.Qg4 Rae8 (17...Qf3! 18.Qc4 Kf8+=). NN – Veldhuis,Paul G, corr Canada, 1972.

9.Ne5 f6 10.Qb3 Be6 (10...Ne6 11.Nf3 Nc6 12.Bc4! Lohr) 11.Qb4 fe5 12.ef4 ef4 13.Be2 Bg4 14.Nc3 Qe7 (14...f3? 15.Qg4) 15.Qe7 Re7 16.f3 Bf5 17.0–0. Lohr.

9.Ne5 Ng6 10.Nf7 Qh4 11.g3 Qe7 12.Bc4 Be6 13.Be6 Qe6 14.Ng5 Qd5 15.0–0 (15.Qb3 Qb3 16.ab3 c5+=) 15...Nc6 16.f4 Rac8 (16...Rad8 17.e4 Bc5 18.Kg2+=) 17.e4+/– Bc5 (17...Qd3 18.Rf3 Qc4 19.d3+/–) 18.Kg2 Re4 19.Ne4 Qe4 20.Qf3 Qf5 21.Nc3 Rd8 22.Ne4 Nd4 23.Bd4 Bd4 24.Rab1 b6 25.Rfe1 Rd5 26.Rbc1 (26.Ng5 Bc5 27.Re8 Nf8+–) 26...Qd7 27.f5 (27.Re2 c5+/–) 27...Ne5 28.Qh5 (28.Qa3 b5+/–) 28...c5 (28...Nd3 29.Ng5 Ne1 30.Re1 g6 31.Re8 Qe8 32.Qh7 Kf8 33.Ne6 Qe6 34.fe6 Rf5 35.Qc7 Bc5 36.Qd8 Kg7+–) 29.Ng5+/– h6 30.Nf3 Nf7 31.g4 Bb2 32.Rc2 Bf6 33.d4 Qa4 34.Rce2+– Rd8 35.dc5 bc5 36.Qg6 Rf8 37.h4 Qc4 38.Rf2 Nd6 39.Re3 Qf4 40.Rfe2 c4 41.Ne5 c3 42.Nd7 c2= 43.Nf6 Rf6 44.Re8 Ne8 45.Re8 Rf8 46.Qe6 Kh7 47.Rf8 Qg4 48.Kf2 Qh4 49.Kf3 Qh1 50.Kg3 Qg1 51.Kf3 Qf1 52.Kg3 Qg1 53.Kf3 Qd1 54.Kg3 Qg1 ½–½. WeezerX – crafty, ICC, 1999.

9.g3 Nc6?? 10.gf4+– f6 11.Nc3 Kh8 12.Rg1 Bf5 13.Nh4 Bd3 14.Qh5 Bf1 15.Kf1 Qd3 16.Ne2 Rf8 (16...Re6+–) 17.Ng6 Kg8 18.Nf8 Rf8 19.Qg4 g6 20.f5 Kf7 21.Qh4 Kg7 22.fg6 hg6 23.Rg3 Be7 (23...Bd2 24.Rf3 Qd6 25.Rd1+–) 24.e4 (24.e4 Qc4 25.Qg4+–) 1–0. pierred (2760) – rajagopal (2000), net–chess.com, 2011.

9.g3 Nd5 10.Bg2 c6 11.0–0 a5 12.Nc3 h5 13.Ng5?? (13.Nd5 Qd5 14.d3 Bg4+=) 13...Bg4?? (13...Qg5 14.Nd5 cd5 15.a3–+) 14.Qc2?? (better is 14.Nf3=) 14...Nc3?? (better is 14...Qg5 15.Nd5 cd5–+) 15.dc3 (15.dc3 Qg5 16.cb4 ab4 17.Rfb1+=) 1–0. lucianobalz (2125) – prakeshdesai, net–chess.com, 2011.

9.g3 Ne6 10.a3 Ba5 11.Bc4 Nc6 12.0–0 a6 13.d4 Ne7 14.Nbd2 b5 15.Bd3 h6 16.Nb3 Bb6 17.a4 b4 18.a5 Ba7 19.Rc1 Bb7 20.e4 Ng5 21.Ng5 hg5 22.Nc5 Bc5 23.Rc5 (23.dc5?! Nc6=) 23...c6 24.Qh5 f6? (better is 24...Rb8+–) 25.f4 gf4 (25...Qd6 26.fg5 f5 27.Bc4 Nd5 28.g6+–) 26.Bc4 Nd5 27.ed5 (worse is 27.Bd5 cd5 28.e5 fe5 29.de5 Qe7+=) 27...cd5 (27...Bc8 28.Rf4 Bd7+–) 28.Rd5 Bd5 29.Bd5 Kf8 (29...Qd5 30.Qd5 Kf8 31.Rf4 Rab8+–) 30.Qf7 1–0. pierred (2760) – jomunoz (1870), net–chess.com, 2011.

9.g3 Nh5 10.a3 Bg4?? (better is 10...Bd6+=) 11.ab4+– Nc6 12.Be2 Nb4 13.0–0 Bh3 14.Re1 a5 15.Nc3 Nf6 16.Qb1 c6 17.Na2 (17.Na2 Na2 18.Ng5+–) 1–0. pierred (2760) – prakeshdesai, net–chess.com, 2011.

9.Qa4 Na6!

10.a3 Nc5 11.Qb5 (11.Qc2 Ncd3 (11...Nfd3 12.Bd3 Nd3 13.Kf1 Bf8 14.Nd4 Nb2–/+) 12.Bd3 Nd3 13.Kf1 Bf8 14.Nd4 Nb2–/+) 11...c6 (11...a6 12.Qc4 Ncd3 13.Bd3 Nd3 14.Ke2 Nb2–+) 12.Qc4 Bd2 (better is 12...Ncd3!? 13.Bd3 Nd3 14.Ke2 (14.Kf1 Bf8–+) 14...Nb2–+) 13.Nbd2+= Ncd3 14.Bd3 Nd3 15.Ke2 Nb2 16.Qb3 Qb6 17.Qb6 ab6 18.Nd4 Be6 19.Rhc1 b5 20.Ne6 Re6 21.Rab1 Na4 22.f4 Rd8 23.Rb4 Red6 24.Rc2 Kf8 25.Rb3 Ke7 26.Nf3 Rd5 27.Nd4 (27.e4 Rc5 28.Rc5 Nc5–/+) 27...f5 28.h3 h5 29.Kf3 (29.Rb1 Nc5–/+) 29...Nc5 (29...h4 30.Ke2–+) 30.Rbc3–/+ Ne6 31.Nb3 (31.Ne6 Ke6 32.g4 fg4 33.hg4 h4–/+) 31...Ra8–+ 32.Nc1 c5 33.Nd3 b6 34.Ne5 Kd6 (34...Ng5 35.fg5 Re5 36.Rb2–+) 35.Rb2–/+ c4 36.g4 hg4 37.hg4 Ng5 38.fg5 Re5 (worse is 38...Ke5 39.gf5 Rh8 40.Rg2+=) 39.Rd2 Ke6 40.Rd4 fg4 41.Kg4 g6 (41...Rc8 42.Kh5–+) 42.Rf4–/+ 0–1. Pospiech,Jozef – Laber,Seweryn, corr Czerniak mem, 1976.

10.Ne5= Nd5!? =.

10.Ne5= Re5 11.Be5+= Nc5 12.Bc7 Ncd3 (12...Na4? 13.Bd8 Bg4 14.a3+–) 13.Bd3 Nd3 14.Ke2 Qc7 15.Kd3 Bf5 16.Ke2 (better is 16.e4!? Qd6 17.Ke3–/+) 16...Qc4–+ 17.Kd1 Qg4 (17...Qg4 18.f3 Qg2–+) 0–1. Gilles,R – Albanesi,P, corr Tch–USA, 1993.

9.Bc3 Nc6

10.Qb3 Qd6 11.Ng5 Qg6 12.g3 Qg5 13.Bb4 Be6 14.Qa3? (better is 14.gf4 Bb3 15.fg5 Nb4 16.Na3 Ba2 17.Bg2–/+) 14...Qd5 (14...Nb4?! 15.Qb4 Qd5 16.Rg1 Nd3 17.Bd3 Qd3 18.Qc3–/+) 15.Rg1 Nd4! (15...Nb4?! 16.Qb4 Nd3 17.Bd3 Qd3 18.Qc3–/+) 16.ed4 Bg4 (16...Bg4 17.Qe3 Qd4–+ (17...Re3?! 18.fe3 Ne6 19.Nc3–+)) 0–1. lucianobalz (2125) – pierred (2760), net–chess.com, 2011.

10.Bb4 Nb4 11.Nc3? (better is 11.d4 Bf5 12.Na3–/+) 11...Bf5–+ 12.Bc4 (12.Qa4 Nc2 13.Kd1–+) 12...Bc2 13.Qc1 (13.Ne5 Nfd3 14.Nd3 Nd3 (14...Bd3?! 15.Bf7 Kh8 16.Bb3=) 15.Bd3 Bd1–+ (15...Bd3?! 16.Qb3–/+; 15...Qd3?! 16.Qe2+=)) 13…Nfd3 (13...Nfd3 14.Bd3 Nd3 (14...Qd3?! 15.a3 Na6 16.Ne2+=) 15.Kf1 Nc1 16.Rc1 Bd3 17.Kg1 c5–+) 0–1. lucianobalz (2125) – rajagopal (2000), net–chess.com, 2011.

9.Nc3 Nd3

10.Bd3 Qd3 11.a3 Ba5 12.Qa4 Nc6 13.Nb5 Re7 0–1. prakeshdesai – jomunoz (1870), net–chess.com, 2011.

10.Bd3 Qd3 11.a3 Ba5 12.Qe2 Bf5 13.Nd4 Qe2 14.Nde2 Bd3 15.Nf4 Ba6 16.d4 c5 17.0–0–0 (17.dc5 Bc3 Double attack) 17...Nd7 18.d5 b5 19.h4 Nb6 (19...b4 20.ab4 cb4 21.Nce2=) 20.d6+= Rad8 21.Ncd5 Nd5 (worse is 21...Rd6 22.Ne7 Re7 23.Rd6+/–) 22.Rd5 c4 23.Bd4 Rd7 24.Bg7 (better is 24.Nh5 f5 25.Rf5 Rd6 26.Ng7+/–) 24...Kg7+= 25.Nh5 Kf8 26.Nf6 Red8 27.Rhd1 Bb6 28.Kc2 Bc8 29.Kc3 a6 30.Nd7 Bd7 31.Rg5 (31.a4 Ba5 32.Kb2 Bb4–/+) 31...Rc8 (31...f6 32.Rgd5–+) 32.Re5 (better is 32.Rdd5!?–/+) 32...Bc5–+ 33.Rh5 Ba3 34.Rh7 b4 35.Kd4 Bb2 36.Kd5 Bc3 37.Ke4 (37.Rd4 Bc6 38.Ke5 Re8 39.Kf4 Bd4 40.ed4 Re4 41.Kg3 Rd4 42.d7–+) 37...Bc6 (better is 37...Rc5 38.g4 Bc6 39.Kf4 Be5 40.Kg5 Bf3–+) 38.Kf4 Bg2 39.f3 Bh3 40.e4 a5 41.e5 f6 42.ef6 Bf6 43.Kg3 (better is 43.Rc7 Bd8 44.Rc8 Bc8 45.h5–+) 43...Be6 44.f4 c3 45.Rc7 (45.d7 Rd8 46.Rh6–+) 45...c2 46.Rc1 b3 47.Rb7 Rc3 48.Kh2 Bh4 49.Rb8 Kf7 50.Rb7 Kf6 51.f5 Bf5 52.d7 Ke6 53.Rb5 Bd8 54.Kg1 Be4 55.Kf2 Rd3 56.Ke2 (56.Rb8 Kd7 57.Rb5 Rd1 58.Rb3 Rc1–+) 56...Rd1 57.Rb3 Rc1 (57...Rc1 58.Rc3 Kd7 59.Rd3 Ke8–+) 0–1. Bestia03g – Holmes034, computer chess game, 2000.

9.a3! Bd6

10.Qb3 Na6 11.Qc3 A) 11...Nh5 12.Bc4+= Rb8 13.Ba6 ba6=; B) 11...Bf8 12.Qd4 Qd4 13.Bd4 Bf5=.

10.Qb3 Qd7 A) 11.d4 Qg4 12.Nbd2 Ng2 13.Bg2 Qg2+=; B) 11.Qc3 Qg4 12.h3 Qg6 13.g3 Nd5+=; C) 11.g3 Ne6 (11...Ng6 12.Bg2 Na6 13.0–0 c6=) 12.d4 Qe7 13.Bg2 c5=.

10.Qb3 Qe7 11.Qc3 (11.Kd1 A) 11...Be6 12.Bc4 (12.Qb7 Nd7 13.Bd4 c5+=) A1) 12...Bc4 13.Qc4 Ne6+= (13...Ng2? 14.Rg1+–); A2) worse is 12...Ng2 13.Qc3 (13.Rg1+– Bg4=) 13...Qf8+=; B) 11...Ne6 12.Nc3 Nc6 13.d4 Ng5+=; 11.d3 Nd7 (11...c5 12.Nbd2 Bf5 13.Nc4 Nc6=) 12.Nbd2 Nc5 13.Qc3 f6+=; 11.Nc3 c6 12.Ne2 Nd5 13.Ned4 Bg4+=; 11.d4 a6 (11...c6; 11...Nd7) 12.Nc3 b5 13.Kd1 Bg4+=) 11...Nh5 (11...Qf8 A) 12.g3 A1) 12...Nh3 13.Qc2+= (13.d3 Bg4+=) 13...Bg4=; A2) 12...Nd5 13.Qc2 Nd7+=; B) 12.Qc2 Nc6 13.Ng5 Ng6=; 11...f6 12.Bc4 Be6 13.0–0 Bc4=) 12.Be2 (12.Qc2 A) 12...Nc6 13.Bb5 (13.Bd3 Nf6=) 13...Bd7+=; B) 12...Bg4 13.Bd3 Nf6+=) 12...Nc6 (12...Na6 13.Ba6 (13.g4 Bg4 14.Rg1+=) 13...ba6=; 12...Nf6 13.d3 Be6+=) 13.g4 (13.0–0 Be6+=) 13...Nf6 (13...Bg4+=) 14.g5 Nh5 15.Rg1 Qf8 (15...Qe4 16.d3 Qa4 17.Nbd2+=) 16.Nh4 (16.Qc2 g6+=) 16...Re4 (16...Bh2 17.Bh5 Bg1 18.Nf3=) 17.Ng2 Be5 (17...Bh2 18.Rh1 Be5 19.Qc2=) 18.d4 Bd4 (worse is 18...Bh2 19.Rh1 Ng3 20.fg3+/– (20.Rh2 Ne2 21.Qc2 Ned4 22.Bd4 Bf5–/+)) 19.ed4 Bg4 (19...Nd4 20.Ne3 Nf4 21.Bd1=) 20.f3 (better is 20.Ne3 Be2 21.Ke2 Rd4 22.Nd2+/–) 20...Bf3?? (better is 20...Nd4 21.fe4 Ne2+=) 21.Qf3+– Rae8 22.Qh5 Nd4 (22...g6 23.Qf3 Re2 24.Qe2 Re2 25.Ke2 Qd6+–) 23.Bd4 Rd4 24.Rf1 1–0. Belov,P I – Olchak,S I, corr I liga Nipsegorodskaya oblast RUS, 1994.

10.Qc2 Be6 11.Nc3 (11.Be5 Ng6 12.Bd6 cd6 13.Bd3 Nc6 14.Nc3 Rc8 15.Rb1 b6=; 11.Qc3 Nh5 12.Bc4 Bc4 13.Qc4 a6 14.0–0 b5 15.Qc2 Nf6=) 11...Nd7 (11...Nc6 12.Rc1 Qe7 (12...Rc8 13.Nb5 Bd5 14.Qf5 f6 15.Bc4 Be6=; 12...Ne5 13.Nb5 Nf3 14.gf3 Nd5 15.Bd3 h6=) 13.Nb5 Bd5 14.Nd6 Qd6 15.Ng5 Ng6+=) 12.0–0–0 (12.Ne4 Ng6= (12...Nd5 13.Bc4 N7b6 14.Neg5 g6 15.Ne6 fe6=) 13.Nfg5 Bd5 14.Nd6 cd6 15.Qf5 Nde5=; 12.Nb5 Nc5 (12...Nd5 13.Bd3 h6 14.0–0 a6 15.Nbd4 Bg4+=; 12...f6 13.d4 Re7 14.Rc1 Nb6 15.Ne5 Nfd5=; 12...Bg4 13.Nd6 cd6 14.Qa4 Bf3 15.Qf4 Bc6+=; 12...a6 13.Nd6 cd6 14.Rc1 Nc5 15.Qc3 Nh5=) 13.Qc3 Nh5 14.Nd6 cd6 15.Bb5 Bd7=) 12...Nd5+= 13.Nd4 (13.Bd3 g6 14.Nd4 c6 15.Ne6 Re6+=) 13...Nc3 14.Ne6 (14.Qc3 Bg4 15.f3 Be5+=) 14...Re6 15.dc3 Qe7 16.a4 Ne5 17.Be2 Ba3 18.Ba3 Qa3 19.Qb2 Qa4 20.Qb7 Rae8 21.Qb5 Qa1 22.Kc2 Qa2 23.Kc1 Rc6 24.Qb2 Qa5 25.Kc2 Qa4 26.Qb3 Qe4 (26...Qe4 27.Kd2 Qg2–+) 0–1. Buss,Michael – Pagni,Carlo Alberto, corr ICCF TT/40–13, 1992.

10.d3 –/+.

10.d4 Nd7 A) 11.Nc3 c6 (11...a6 12.g3 Ng6 13.Bg2 Nb6=) 12.g3 Ng6 13.Bd3 Nf6+=; B) 11.Nbd2 Nb6 12.Ne5 Be5 13.de5 Ng6+=; C) 11.Qc2 a6 (11...Qf6 12.Kd1 Ng6 13.Nc3 Qe7=; 11...c6 12.Nbd2 Bc7 13.g3 Ng6=; 11...Nf6 12.Ne5 N4d5 13.Nd2 Be6=) 12.Nc3 Nf6 13.g3 Nh3+=.

10.g3 Ng6 11.Bg2 c6 12.0–0 Nd7 13.Nc3 Nb6 +=.

10.g3 Nh3 11.Bg2 Nc6 12.d4 Qe7 13.Qd3 Bg4 14.Nbd2 Nd8 15.Nc4 f6 16.Nh4 Qf7 17.Rc1 Bf8 18.e4 g5 (18...Be6 19.Ne3 Qd7 20.f4+/–) 19.Nf3 (19.Ne3 f5 20.Nhf5 Bf5 21.ef5 Nf4 22.gf4 gf4+–) 19...Ne6 20.Nfd2 Rad8? (20...Ng7 21.Qf1 Qd7 22.f3+–) 21.Ne3 (better is 21.f3!? Nhf4 22.gf4 Nf4+–) 21...f5+/– 22.e5 Nd4 23.Qc4?? (23.Bd4 c5 24.Ng4 fg4 25.Bh3 gh3 26.Nf3 cd4 27.0–0+=) 23...Qc4–/+ 24.Rc4 Nc6 (better is 24...c5!? 25.Bd5 Kg7–/+) 25.Bc6 bc6 26.Ng4 fg4 27.Rg4? (27.Rc2 Rd3 28.Nc4 Bc5+=) 27...Bg7?? (better is 27...Nf2 28.Rg5 Bg7 29.Kf2 Rd2 30.Kf3 Rb2–+) 28.Nc4= Rd1!? 29.Kd1 A deflection 29...Nf2 A double attack 30.Kc2 Ng4 31.h3 Nf2 32.Rh2 Ne4 33.g4 Kf7 34.Re2 Nc5 35.Bc3 Ne6 36.Rf2 Ke7 37.Ne3 Nf4 38.Nf5 Kf8 39.Ng7 Kg7 40.h4 Nd5 41.Bd4 gh4 42.Rh2 Nf4 43.Rh4 Ne6 44.Bc3 (worse is 44.Ba7 c5–/+) 44...c5 45.Kd3 Rf8 ½–½. Teichmann,Erik (2365) – Zhao,Zong Yuan (2175), Australian Masters, 2000.

10.Qb3 Nc6

11.Bc4 Qd7 12.0–0 Ng2 13.Ng5 Qg4 =.

11.Bc4 Be6 12.Be6 Re6 13.Kf1 (13.g3 Ng6 14.0–0 Be7 15.Rc1=; 13.0–0 Nd3 14.Bc3 Rb8 15.Bb2+=) 13...Ng6 14.d4 Qe8 15.d5 =.

11.Bc4 Ne6?? 12.Qc3= Bf8 (12...Qe7 13.d3+=) 13.d4+= Ng5 14.Nbd2 Be6 (14...Bg4 15.Ne5 Ne5 16.de5+=) 15.0–0+= Bd5 (15...h6 16.Ng5 Bc4 17.Qc4 hg5 18.f4+=) 16.Bd5 Qd5 17.Ng5 Qg5 18.e4 Rad8 (18...Bd6 19.Nf3 Qb5 20.Qc2+/–) 19.d5 Nb8 20.f4 (20.Rad1 Qh5 21.Qa5 c6+=) 20...Qe7 21.Rac1 (21.Rfe1 Qc5 22.Qc5 Bc5 23.Kf1 c6=) 21...c6 22.f5 (22.Rf3 cd5 23.Rg3 d4+= (23...de4?? 24.Rg7 Kh8 25.Rg8 Kg8 26.Qh8)) 22...cd5 (22...f6!?=) 23.f6+/– Qe6 24.fg7 Be7 25.Rce1 (25.ed5 Qd5 26.Nf3 Nd7=) 25...d4= 26.Qg3 Bd6 27.Qh4 Be7 28.Qg3 Qg6 29.Qf2 (29.Qb3!? Nc6 30.Rf3= (30.Qb7?? Rb8 31.Qd7 Red8–+)) 29...Nc6 30.Nb3 d3 (30...Qg7 31.e5–/+) 31.e5 (31.Rd1 Bd6 32.Bf6 Rd7+=) 31...Qe6 (worse is 31...Kg7 32.e6 f6 33.Re3+=) 32.Nd2 (32.Re3 h6–/+) 32...Rd5 33.Ne4 (33.Qg3 Ne5 34.Kh1 f6+=) 33...Ne5 (33...Kg7? 34.Qg3 Qg6 35.e6 f6 36.Bf6 Bf6 37.Nf6+–) 34.Kh1 (34.Bc3+=) 34...f6 (34...Kg7 35.Qg3 Kf8+=) 35.Qh4 (better is 35.Be5 Re5 36.Ng5=) 35...d2–+ 36.Rd1 f5 37.Qh5 Ng6?? (better is 37...Red8 38.Ng5 Bg5 39.Be5 Qg6 (39...Re5?! 40.Qg5 Rd4 41.Qg3–+) 40.Qg6 hg6–+) 38.Nd2+= Bd6 39.Qf3 (39.g3 f4 40.Qf3 Rb5+=) 39...Nf4 (39...Be5 40.Be5 Ne5 41.Qf5 Qf5 42.Rf5 Kg7 43.Kg1+=) 40.Qb3 Ng2 (40...Rd3 41.Qe6 (41.Qb7? Rb8 42.Qc6 Rb2–+) 41...Ne6 42.Nc4 (worse is 42.Rf5 Bf4 43.Bc1 Rc8–+) 42...Rd1 43.Rd1+=) 41.Ne4= (41.Kg2?? Rd2 42.Rd2 Qb3–+) 41...fe4 42.Rd5 Ne3 43.Rf8 (worse is 43.Qe3 Qd5 44.Kg2 Bc5–/+) 43...Rf8 44.gf8Q Kf8 45.Bg7 Kg8 46.Rb5 Qb3 47.Rb3 Nf5 48.Bc3 (48.Ba1 b6=) 48...b6 49.Rb5 (49.a4 Kf7=) 49...Ne3 (49...Bc5 50.Rb1=) 50.Bb4 Bb8 51.Rg5 Kf7 52.Bc3 Ke6 53.Rh5 Bd6 54.Rh7 Ba3 55.Ra7 Bc5 56.Rh7 (56.h4 Nf5=) 56...Kd5 (56...Nd5 57.Rh6 Kd7 58.Rh7 Ke6 59.Rh6 Kd7 60.Rh7 Ke6=) 57.h4 ½–½. Belov,P I – Krasichkov,V D, corr semi Nipsegorodskaya oblast RUS, 1995.

11.Bc4 Qe7 12.0–0 Ne6 13.Bd5 Bd7 14.d4 Ncd8 15.Nbd2 =.

11.Bc4 Ng2 A) 12.Ke2 A1) 12...Nf4 13.Kd1 Ne6 14.Rg1 f6 15.Qc2–/+; A2) 12...Qe7–/+ 13.Rg1 (13.Qc3 Qf8 14.Rg1 Nf4 15.Ke1–/+) 13...Nf4 14.Ke1 Ng6 15.Bd5–/+; A3) 12...Qd7 13.Rg1 (13.d3) 13...Nf4 14.Ke1 Ng6 15.Bb5–/+; A4) 12...Re7 13.Rg1 Nf4 14.Ke1 Ng6 15.d3–/+; B) 12.Kf1 Na5 13.Qc3 Qf6 14.Qf6 gf6 15.Be2+/–.

10.Qc2 a6

11.Qc3 A) 11...Nh5 12.d3 (12.Bc4 c6 13.d3 b5 14.Bb3 a5+=; 12.Be2 Nf6 13.d3 Nbd7 14.Nbd2 Nc5=; 12.Qb3 Qe713.Nc3 Nf6 14.d4 b5+=; 12.Bd3 Nf6 13.Qc2 Nbd7 14.0–0b5+=; 12.Qc2 Nf6 13.Bd3 Nbd7 14.0–0 b5+=)12...Nd7 13.Be2 Nb6 14.Qc2 Nf6=; B) 11...Bf8 12.Ne5 (12.Qc4 Ng6 13.Be2 Nc6 14.0–0 Be6+=) 12...Nd5 13.Qb3 b5 14.a4 f6=.

11.Nc3 Qe7 12.d3 (12.Ne2 Ng6 13.Qc3 f6 14.Qb3 Kh8+=; 12.g3 Bg4 13.Nd4 Ne6 14.Ne6 Qe6=; 12.d4 Bg4 13.h3 Bh5 14.0–0–0 Bf3+=) 12...Bf5 13.Nd2 Nc6 14.Nde4 Ne6=.

11.Kd1 A) 11...Ne6 12.Bd3 (12.Nc3 Nd7 13.Ne4 Be7 14.Bc4 Nb6=; 12.d4 Ng5 13.Nbd2 Nf3 14.Nf3 Nd7=; 12.h3 Nc5 13.Nc3 Be6 14.Nd4 Bd7+=; 12.Bc4 Nd7 13.Nc3 Nf6 14.Nd5 Nd5+=; 12.Be2 Nd7 13.d4 c5 14.Bd3 Nf6+=; 12.Ke1 Nd7 13.Bd3 Nf6 14.Bf6 Qf6–/+) 12...Nf8 13.Qc3 f6 14.Ng5 Bg4=; B) 11...Ng6 12.Bd3 (12.Bc4 Qd7 13.Ke1 Qg4 14.Rg1 Nf4–/+; 12.d4 Bg4 13.Bd3 Nc6 14.Be4 Rb8+=; 12.Nc3 Nc6 13.d4 Bg4 14.Bd3 Qe7+=; 12.d3 b5 13.Nbd2 Bb7 14.a4 c5+=; 12.Be2 Nc6 13.d4 Bg4 14.Nc3 Nh4+=) 12...Be6 13.Be4 Nc6 14.Bc6 bc6+=; C) 11...Nh5 12.d4 (12.Bc4 Nd7 13.Bf7 Kf7 14.Qh7 Rh8–/+; 12.Bd3 Nf6 13.Bf6 Qf6 14.Nc3 g6+=) 12...Nf6 13.Bd3 Bg4 14.Nbd2 Nc6=; D) 11...Nd5 12.Bd3 (12.Bc4 Be6 13.Nd4 Qd7 14.Ne6 Qe6+=) 12...h6 13.Nc3 Nf6 14.Ne4 Ne4+=.

11.d3 A) 11...Nc6 12.g3 (12.Nbd2 Bf5 13.Rd1 Qe7 14.Qc3 f6+=; 12.Nfd2 Ne5 13.g3 Nh3 14.d4 Nf2+=) 12...Bg413.Nbd2 Nh3 14.Bg2 Rb8=; B) 11...Bg4 12.Nbd2 (12.Nc3; 12.Nfd2; 12.Qc3) 12...Nc613.Ne4 Ne6 14.Be2 Be7=; C) 11...Qd7 12.g3 (12.Nbd2 Qg4 13.Rg1 b5 14.Ne4 Nd5=) 12...Ne6 13.Bg2 Nc5 14.Nc3 Qf5=; D) 11...Bf5 12.g3 Bg4 13.Nbd2 Nd5 14.Bg2 Nc6=; E) 11...Qe7 12.g3 Ng613.Bg2 c6 14.Nbd2 Nd7=; F) 11...Be6 12.Qc3 (12.Nbd2 Bd5 13.Ne4 Nc6 14.Qc3 Bf8=; 12.Nc3 Nc6 13.Ne4 Bd5 14.Qc3 Nh5=) 12...Nh5 13.Be2 Bd5 14.g4 Nf6+/–; G) 11...b5 12.Nbd2 (12.Nc3 Bb7 13.Ne4 Ng6 14.Be2 Be4=; 12.g3 Ne6 13.Bg2 Bb7 14.0–0 Nd7=) 12...Bb7 13.Ne4 f5 14.Nd6 cd6=.

11.d4 A) 11...Nd7 12.g3 (12.Nbd2 b5 13.g3 Nd5 14.Bd3 N5f6=; 12.Nc3 Nf6 13.g3 Nh3 14.Bd3 Ng4–/+; 12.a4 b6 13.Nbd2 Bb7 14.Ba3 c5+=; 12.Kd1 Nd5 13.Nc3 N7f6 14.Nd5 Nd5+=; 12.e4 Nb6 13.g3 Nfd5 14.Bd3 Bh3+=) 12...Ng6 13.Bg2 Nf6 14.0–0 c6=; B) 11...Nc6 12.Nbd2 (12.g3 Ng6 13.Bd3 Bh3 14.Nbd2 Rb8=; 12.Nc3 Bg4 13.Ne2 Ng6 14.d5 Bf3+=) 12...Bg4 13.g3 Nd5 14.Bd3 h6=.

11.g3 A) 11...Nd5 12.Nc3 Nf6 13.Bg2 c6 14.0–0 Nbd7=; B) 11...Bg4 12.gf4 Bf3 13.Rg1 f6 14.Bd3 Kh8+=; C) 11...Ne6 12.d4 (12.Bg2 c5 13.0–0 Nc6 14.d3 Be7=) 12...Bd7 13.Bd3 Nf8 14.Be4 Ra7=; D) 11...Nh5 12.Bg2 c6 13.0–0 Nf6 14.d3 Be6=; E) 11...Ng6 12.Bg2 (12.d3 Be5 13.Nc3 Bf5 14.Rd1 Nd7+=; 12.Nc3 Nc6 13.Bg2 Bg4 14.0–0 Qd7=) 12...Nc6 13.0–0 Bg4 14.d3 Qd7=.

10.Qc2 Nc6

11.Nc3 Be5 12.0–0–0 Nd5 13.Ne5 Ne5 14.d4 Ng4 15.Nd5 Qd5 16.Bd3 Nf6 17.Rhe1 (17.Qc7? Bg4 (17...Qg2?! 18.Qg3 Qc6 19.Kd2=) 18.Qc2 Rac8–+) 17...Bd7 18.e4 (18.Qc7?? Rac8 (18...Qg2?! 19.Qg3 Rac8 20.Kb1=) 19.Qc5 b6–+) 18...Qa5 (18...Qg5 19.Kb1 Bb5 20.Bb5 Qb5 21.d5=) 19.Qd2 (19.Qc5 Qa4+=) 19...Qd2 (better is 19...Qh5!? 20.Qf4 Rac8=) 20.Kd2+/– c6 21.f3 Be6 22.g4 Nd7 23.h3 Nb6 24.Rc1 Na4 25.Ba1 Nb6 26.f4 Rad8 27.f5 Bc8 28.h4 Rd6 29.g5 h5 30.gh6 (30.Re3 Rdd8+/–) 30...Rh6 31.Rh1 Nd7 32.Rcg1 Kf8 33.Bc3 b6 34.Rg3 a5 (34...Nf6!? 35.Bb4 c5 36.dc5 a5+/–) 35.Rhg1+– Rh7 36.e5 Nb8 (36...Rd8!?+/–) 37.h5!+– Rh5 38.Rg7 Rh2 39.Kc1 Rh8 40.Bc4 Re7 41.f6 Re6 42.Bd2 1–0. Kuehn,Peter – Wolf,Manfred (some sources mention “Klaus”), DDR ch–11 sf09, 1981.

11.Nc3 Ne5 A) 12.Nb5 Nf3 (12...c6 13.Nd6 Nf3 14.gf3 Qd6 15.Rg1=) 13.gf3 c6 14.Nd6 Qd6 15.Rg1=; B) 12.Ne4 Bf5 (12...Nf3 13.gf3 Ng6 14.Nd6 cd6 15.Qc3+=) 13.Ne5 Be5 14.Be5 Re5 15.d3+=; C) 12.Ne5 Be5 13.d4 Bd6 14.g3 Ne6 15.Ne4=.

11.Nc3 Be6 A) 12.Rb1 Qe7 (12...Ne5 13.Ne5 Be5 14.d3 Bd6 15.Ne4=; 12...Rc8 13.Ba1 b6 14.Ne4 Bd5 15.Nfg5+=) 13.Nb5 Bd5 14.Nd6 cd6 15.d3+=; B) 12.Nb5 Bd5 13.Nd6 Qd6 14.Ng5 Ng6 15.Rc1+=; C) 12.Rc1 Rc8 (12...Qe7 13.Nb5 Bd5 14.Nd6 Qd6 15.Ng5+=; 12...Ne5 13.Nb5 Nf3 14.gf3 Nd5 15.Bd3=; 12...Rb8 13.Ne4 Bf5 14.Nfg5 Bg6 15.f3+=) 13.Nb5 Bd5 14.Qf5 g6 15.Qf6+=; D) 12.Rd1 Qe7 (12...Ne5 13.Ne5 Be5 14.d4 Bd6 15.d5=; 12...Rc8 13.d4 Bg4 14.Ne4 Qe7 15.Neg5=) 13.Nb5 Rad8 14.Nd6 Qd6 15.Ng5+=.

11.Nc3 Qe7 12.Nb5 Bg4 (12...Be6 13.Nd6 cd6 14.Qe4 Ng6 15.Rc1=) 13.Nd6 cd6 14.Qa4 Bf3 15.Qf4=.

11.Nc3 Qf6 12.Nb5 Qe6 (12...Qh6 13.Nd6 Qd6 14.g3 Ng6 15.Qd3=; 12...Qe7 13.Qc3 f6 14.Bc4 Be6 15.0–0=) 13.Kd1 Ng6 14.Nd6 cd6 15.Rc1=.

11.Nc3 Bf8 A) 12.Rb1 Bg4 (12...Be6 13.d3 Bf5 14.Rd1 Bg4 15.Ne4=; 12...Qe7 13.d3 Bf5 14.Bc1 Rab8 15.e4=; 12...a6 13.h3 Bd6 14.g3 Ng6 15.Bg2=; 12...Rb8 13.h3 Be6 14.d3 Nd5 15.Be2=) 13.Qa4 Qf6 14.Qb5 Bf3 15.gf3+=; B) 12.Rc1 Bg4 (12...Be6 13.d3 Bf5 14.Rd1 Bg4 15.Ne4=; 12...Rb8 13.d3 Bf5 14.Rd1 Bg4 15.Ne4=; 12...Bd7 13.Ne4 Bf5 14.Nfg5 h6 15.g4+=; 12...Qe7 13.d4 Bg4 14.Ne2 Nd5 15.Qb3=) 13.Ne4 Bf5 14.Nfg5 h6 15.g4+=; C 12.Rd1 Be6 (12...Bg4 13.Ne4 Qd5 14.Nfg5 Bf5 15.f3=; 12...a6 13.Ne4 Bf5 14.d3 Ng6 15.Be2=; 12...Rb8 13.Ne4 Qd5 14.d3 f5 15.Nc3=; 12...Qe7 13.d4 Bg4 14.h3 Bf3 15.gf3=; 12...Bd7 13.Ne4 Bf5 14.d3 Ng6 15.Be2=; 12...a5 13.Ne4 Bf5 14.d3 Nd5 15.Be2=) 13.d4 Bg4 14.Ne2 Bf3 15.gf3=.

11.Nc3 Ng6 12.Bb5 Bd7 (12...Bg4 13.Ne4 Bd7 14.0–0 Nce5 15.Ne5=) 13.Ne4 Rc8 14.d3 a6 15.Bc4=.

11.Kd1 Ng6+= 12.Bd3 Rb8 13.Be4 Be6 +=.

11.Kd1 h5?? 12.ef4+– Bf4 13.h3 Qd5 14.Bc4 Qd6 15.Nc3 a6 16.Ne4 Qd8?? (16...Qh6+–) 17.Nf6! gf6 (17...Kf8 18.Qh7 Be6 19.Nh5 Bh6+–) 18.Qg6 Kh8 19.Bf6 Qf6 20.Qf6 Kg8 (20...Kh7 21.Qf7 Kh8 22.Qe8 Kg7 23.Qf7 Kh6 24.Qf8 Kh7 25.Bd3 Bf5 26.Bf5) 21.Qf7 (21.Bf7 Kh7 22.Bg6 Kg8 23.Qf7 Kh8 24.Qh7) 21...Kh8 22.Qe8 Kg7 23.Qf7 Kh6 24.Qf8 Kg6 (24...Kh7 25.Bd3 Bf5 26.Bf5) 25.Bd3 1–0. pcmvr – jomunoz (1870), net–chess.com, 2011.

11.g3 Nh3 12.d4 Qf6 13.Nbd2 Bg4 14.Bg2 Rad8 15.Qd3 a6 16.Rc1 h6 17.Rc2 Bf8 18.Kf1 Rd5 19.e4 Rb5 20.Nc4 Ng5 21.Nfe5 Ne5 22.de5 Qd8 23.Qd8 Rd8 24.Ne3 Bh5 25.g4 Bg6 26.f4 Be4 (26...Ne4 27.f5 Rb2 28.Rb2 Ba3 29.Rb7+– (29.Be4?! Bb2 30.fg6 c6+=)) 27.Be4 Ne4 28.Ke2 Nc5 29.Rd1 Rd1 30.Nd1 c6 31.Rc4 Ra5 32.h3 g5 33.Ne3 Ne6 34.fg5 hg5 35.a4 Nf4 36.Kd2 Nh3 37.Bd4 Nf4 38.Bc3 Rc5 39.a5 Rb5 40.Ra4 Bg7 41.Re4 Nd5 42.Nd5 Rd5 43.Kc2 Kf8 44.Bb4 c5 45.Bc3 Ke7 46.Re1 c4 47.Re4 Ke6 48.Bd2 Rc5 49.Bg5 Re5 50.Re5 Be5 51.Be3 Kd5 0–1. Wantoch_Rekowski,Jacek (2245) – Kolanowski,Marek (2135), 54. Championship Poland Semifinal, 2009.

11.h4 a5 12.Ng5 g6 13.Ne4 (13.Bc4 Be6 14.Ne6 Ne6 15.h5 g5 16.d4 Ncd4 17.Bd4 Nd4 18.Bf7=) 13...Bf5 14.d3 Be4 15.de4 Nh5 16.Bb5 Qd7 17.Nd2 Nd4 18.Bd4 +=.

11.h4 a6 12.Ng5 Ng6 (12...g6 13.Bc4 Be6 14.Ne6 Ne6 15.h5 g5 16.Bd3 h6 17.Bh7 Kf8 18.Be4+=) 13.Nh7 Be5 14.Be5 Re5 15.Ng5 Nd4 16.Qa2 Qf6 17.Bc4 Be6 18.d3 +=.

11.h4 Rb8 12.Ng5 g6 13.Bc4 Be6 14.Ne6 Ne6 15.h5 Ne5 16.hg6 fg6 17.Be5 Be5 18.d4 +=.

11.h4 Qd7 12.Nc3 Qf5 (12...Qg4 13.Nb5 (13.Rg1 Bf5 14.Qb3 a6 15.d4 b5 16.Qd1 b4 17.Na2 ba3 18.Bc3–/+; 13.0–0–0 Bf5= 14.Qb3 Nd3 15.Bd3 Bd3 16.Ne1 Ba6 17.d3 Ne5 18.f3–/+) 13...Bf5 14.Qc3 Ne5 15.Nd6 Ng2 16.Bg2 Qg2 17.Ne5 cd6 18.Nf3+/–) 13.0–0–0+= (13.Qf5 Bf5 14.Nb5 Nd3 15.Bd3 Bd3 16.Nd6 cd6 17.h5 Ne5 18.h6=) 13...Qc2 14.Kc2 Bf5 15.d3 Ne6 16.h5 (16.Nb5 Be7 17.Rb1 a6 18.Nbd4=) 16...h6 17.Rg1 (17.Nb5 Bc5 18.Ne5+=) 17...Bg4 18.Rh1 (18.d4+=) 18...Rad8 19.d4 Na5 20.Rh4 Bf5 21.Bd3 Bd3 22.Rd3 Be7 23.Rg4 Nc4 24.Kb3 Nb2 25.Kb2 f5 26.Rg6 Bf6 27.Kc2 Rd7 28.a4 (28.Rd1 c5 29.d5 Nf8 30.Rf6 gf6+=) 28...Nf8 29.Rg3 Red8 30.Ne1 Ne6 31.Rf3 f4 32.Ne4 (32.ef4 Nd4 Double attack (32...Rd4 Deflection)) 32...Be7 33.g4 b6 34.Rh3 Rd5 35.Nf3 Ra5 36.Rh1 Ra4 37.Ne5 fe3 38.fe3 Ra2 39.Kb3 Rg2 40.Rc1 a5 41.Rc2 (41.Rc6 Ng5 42.Ng5 hg5+=) 41...Rc2 42.Kc2 Re8 43.Rd1 Ng5 44.Nc3 Bf6 45.Nc4 Ne4 46.Nd5 Rd8 47.Nf6 (47.Nc7? Rc8 48.Nd5 Rc4 49.Kd3 Rd4 50.ed4 Nf2 51.Kc2 Nd1 52.Kd1 Bd4–+) 47...Nf6 (47...gf6 48.Rf1–/+) 48.Ne5 c5 49.Rb1 Rc8 50.Kd3 Nd5 51.Rb5 a4 52.Nc4 Rc6 53.Rb1 cd4 (53...Nb4 54.Kc3–/+) 54.Kd4+= Nf6 55.Rb4 Ng4 56.Ra4 (56.e4!?+=) 56...b5–/+ 57.Ra8 Kh7 58.Ne5 Ne5 59.Ke5 Rb6 60.Ra3 b4 61.Rb3 g6 62.Kd5 gh5 63.e4 Kg6 64.e5 Kf7 65.Kc5 Rb8 66.Kd6 Rd8 67.Kc5 Ke6 68.Rb4 Ke5 (68...Ke5 69.Rh4 Rc8 70.Kb4 Kf5–+) 0–1. Buczinski,Henryk (2185) – Kuhne,Detlev (2260), WC–2012–T–00005, 2010.

11.h4 Qd7 12.Kd1 A) 12...Ng6 13.Be2 (13.Bb5 Qg4 14.Bc6 bc6 15.Rg1 Nh4 16.Qc6 Bd7 17.Qd5 Rab8 18.Bc3–+; 13.d3 Nge5 14.Be2 Qg4 15.Rg1 Nf3 16.Bf3 Qh4 17.Bc6 bc6 18.Nc3–/+; 13.Ng5 Be5 14.d4 Bd4 15.ed4 Nd4 16.Qc4 Nb3 17.Qd3 Qe7 18.Qc3–/+; 13.d4 Qg4 14.h5 Nge7 15.Rh4 Qd7 16.e4 h6 17.Bd3 f6 18.Nc3=; 13.h5 Nge5 14.Ne5 Ne5 15.d4 Ng4 16.Kc1 h6 17.Nc3 c6 18.Bd3–/+) 13...Qg4 14.g3 Qe6 15.d4 Rd8 16.Nc3 Qd7 17.h5 Nf8 18.d5=; B) 12...Nd5 13.Ng5 (13.Bd3 Qg4 14.Bh7 Kh8 15.Kc1 f5 16.Ng5 Qg2 17.Qd1 Re7 18.Bg6=; 13.Bb5 Nde7 14.Ng5 Ng6 15.d3 Rb8 16.Ne4 Nge5 17.Ke1 a6 18.Be5+=; 13.Bc4 Nce7 14.Nc3 Nc3 15.Qc3 Qg4 16.Qd4 Qg6 17.h5 Qh6 18.Ne5=; 13.Be2 Ne5 14.Ne5 Be5 15.Be5 Re5 16.Ke1 a6 17.d4 Re6 18.Nd2+=) 13...g6 14.Be2 Be5 15.Be5 Re5 16.Nc3 Qd8 17.Bf3 Nde7 18.d4=; C) 12...Ne6 13.d4 (13.Bd3 h5 14.Be4 Rb8 15.Ng5 Ne5 16.Bf5 Qc6 17.Be5 Ng5 18.Qc6=; 13.Bb5 Ned8 14.Ng5 Qf5 15.Bd3 Qf2 16.Bh7 Kf8 17.Be4 f6 18.Nh7=; 13.Bc4 Ned8 14.Ng5 Qf5 15.Bd3 Qf2 16.Bh7 Kf8 17.Be4 f6 18.Nh7=; 13.Ng5 Nf8 14.Bc4 Re7 15.d4 Qg4 16.f3 Qd7 17.Ne4 Qd8 18.Nbd2=; 13.d3 Ned8 14.Nc3 Be7 15.d4 Qg4 16.d5 Ne5 17.Qe2 Nf3 18.Qf3=) 13...Ne7 14.Bd3 Nf8 15.Ng5 Neg6 16.Bc4 Nh8 17.Nc3 Be7 18.Nd5=.

11.h4 Qd7 12.d3 Qg4 13.Nbd2 Be6 14.g3 Nd5 15.Be2 Qg6 16.h5 Qh6 17.Ne4 Be7 18.Nd4 =.

11.h4 Qd7 12.g3 A) 12...Nd5 13.Ng5 f5 14.Bc4 Bf8 15.g4 Nce7 16.gf5 Nf5 17.e4 h6 18.Kd1+–; B) 12...Ne6 13.Bh3 (13.Ng5 Nf8 14.Bb5 Nd4 15.Qh7 Nh7 16.Bd7 Nc2 17.Kd1 Ne3 18.de3+=; 13.Bg2 Rb8 14.d4 Ne7 15.Ng5 Ng5 16.hg5 Ng6 17.Qe2 c6 18.Qh5=; 13.Bc4 Na5 14.Be6 Re6 15.Ng5 Rh6 16.Qc3 f6 17.Qa5 fg5 18.Qg5=; 13.d4 Nf8 14.Bd3 Qg4 15.Nbd2 Qh5 16.Be4 Bd7 17.Rb1 Rab8 18.Ng5=) 13...Qe7 14.Ng5 Nf8 15.Bg2 Rb8 16.Nc3 a6 17.Be4 f5 18.Bd5+/–; C) 12...Ng6 13.Bb5 Rb8 14.h5 Nge5 15.Be5 Be5 16.Ne5 Re5 17.Bc6 bc6 18.Nc3=; D) 12...Nh5 13.Ng5 g6 14.Be2 f6 15.Ne4 Qe7 16.Bh5 Qe4 17.Qe4 Re4 18.Bf3+/–; E) 12...Qg4 13.Ng5= Ng6 14.Bc4 Re7 15.Be2 Qf5 16.Bd3 Qa5 17.Nh7 Qd5 18.Rh2=.

11.h4 Qe7 12.Ng5 g6 13.Nf3 (13.d3 Bf5 14.Nd2 Ne5 15.Be5 Be5 16.Rb1 Nd5 17.Ngf3 Bg7 18.Rb7+=; 13.g3 Bf5 14.Qb3 Ne6 15.Bc4 Ncd4 16.Bd4 Nd4 17.Qb2 Nc2 18.Kd1–/+) 13...Qd8 14.Qc3 f6 15.Qf6 Qf6 16.Bf6 h6 17.g3 Nh5 18.Bc3 +=.

11.h4 Ng6 12.Bb5 Bd7 13.Bd3 Rb8 14.h5 Nf8 15.h6 g5 16.Rh5 Bf4 17.Be4 Bg4 18.Rh1 +=.

11.h4 Ng6 12.Nc3 A) 12...a6 13.Be2 Bg4 14.h5 Nf8 15.h6 g6 16.Ne4 Bf5 17.Bd3 Re6 18.Nd6+=; B) 12...Bd7 13.Be2 (13.Bd3 Rb8 14.h5 Nf8 15.h6 g6 16.0–0 Bg4 17.Ne4 Nd7 18.Qc3+=; 13.d4; 13.Nb5; 13.Ne4; 13.Rd1) 13...Bg4 14.h5 Nf8 15.h6 g6 16.Ne4 Bf5 17.Qc3 Ne5 18.Nfg5+=; C) 12...Be6 13.Bb5 (Bd7 14.Bd3 Bg4 15.Be4 Rb8 16.h5 Nf8 17.Nb5 a6 18.Nd6+=; D) 12...Rb8 13.d4 (13.Bb5 Bd7 14.Ne4 Nce5 15.Ne5 Ne5 16.Bd7 Qd7 17.Be5 Re5 18.Ng5=; 13.Be2 Be6 14.d4 Nge7 15.e4 Bg4 16.Nb5 Bf3 17.gf3 a6 18.Nd6=; 13.Rb1 Bg4 14.Ne4 Bf5 15.Bd3 Nce5 16.Be5 Ne5 17.Ne5 Re5 18.g4=; 13.Rc1 Bg4 14.Ne4 Bf5 15.d3 Nge5 16.Nd6 cd6 17.Qd2 Nf3 18.gf3+=; 13.Nb5 Bg4 14.Ng5 Be7 15.Nh7 Bh4 16.Bd3 Nge5 17.Be5 Ne5 18.Be4=) 13...Bg4 14.Ne4 Bf3 15.gf3 Nh4 16.Rh3 Be7 17.0–0–0 a6 18.d5=; E) 12...Bg4 13.Ne4 Bf3 14.gf3 Nce5 15.Be5 Ne5 16.Be2 Ng6 17.h5 Nh4 18.h6+=; F) 12...h6 13.Rc1 (13.Nb5 Bg4 14.Nd6 cd6 15.Be2 Rc8 16.Qa4 h5 17.Rc1 a6 18.d3=; 13.Bd3 Nce5 14.Ne5 Ne5 15.Nb5 Nd3 16.Qd3 Re6 17.Qd4 Rg6 18.Nd6+=; 13.Bb5 Bd7 14.Ne4 Nb4 15.ab4 Bb5 16.Nd4 Bd7 17.h5 Nf4 18.ef4=; 13.Rb1 Nce5 14.Ne4 Nf3 15.gf3 Bf5 16.Bd3 Be5 17.Be5 Ne5 18.Be2=; 13.Be2 Bg4 14.Ne4 Rc8 15.Bb5 Bd7 16.Rb1 Qe7 17.Bd3 Nd8 18.Qc3=) 13...Bg4 14.Ne4 Bf5 15.d3 Nge5 16.Ne5 Ne5 17.Nd6 cd6 18.Qb3=.

11.h4 Ng6 12.Bd3 A) 12...a5 13.Be4 (13.Bg6 fg6 14.Ng5 Be6 15.Ne6 Re6 16.d4 Ne7 17.h5 c6 18.Qb3=; 13.h5 Nf8 14.Be4 h6 15.Bc6 bc6 16.d3 Bg4 17.Nbd2 Ne6 18.Kf1=; 13.Ng5) 13...Ra6 14.h5 Nf8 15.h6 g6 16.0–0 Nd7 17.d3 Qe7 18.Nbd2+=; B) 12...Rb8 13.Be4 Qe7 14.Nc3 Bg4 15.h5 Bf3 16.gf3 Nge5 17.Bh7 Kh8 18.Be4+/–; C) 12...Bd7 13.h5 (13.Bg6 fg6 14.h5 g5 15.Qc3 Ne5 16.Ne5 Re5 17.d4 Re7 18.h6=) 13...Nf8 14.h6 g6 15.Be4 f6 16.0–0 Rb8 17.Nc3 Ne5 18.Ne5+=; D) 12...Bg4 13.Be4 (13.h5 Nf8 14.h6 g6 15.Be4 Nd7 16.Bc6 bc6 17.d3 Rb8 18.Nbd2=) 13...Rb8 14.h5 Bf3 15.gf3 Nf8 16.Rg1 f6 17.d4 Na5 18.Nd2+=; E) 12...Nce5 13.Be4 (13.Be5 Be5 14.Ne5 Re5 15.h5 Nf8 16.h6 g5 17.Be4 f5 18.Bf3=; 13.Ne5 Be5 14.Be5 Re5 15.h5 Nf8 16.h6 g6 17.Be4 Re8 18.Bb7=) 13...Nf3 14.gf3 c6 15.h5 Nf8 16.Rg1 f6 17.h6 g5 18.Bh7+–; F) 12...a6 13.h5 (13.Be4 Qe7 14.Bc6 bc6 15.h5 Nf4 16.h6 g6 17.Qc3 f6 18.Kf1=; 13.Bg6 fg6 14.Ng5 Be6 15.Ne6 Re6 16.d4 Na5 17.d5 Re8 18.h5=; 13.Bc3 Rb8 14.h5 Nf8 15.h6 g6 16.Be4 Bd7 17.d3 Qe7 18.Bb2=) 13...Nf8 14.h6 g6 15.Be4 Nd7 16.Bc6 bc6 17.d3 Rb8 18.Nbd2+=.

11.h4 Ng6 12.d4 A) 12...Be6 13.Bd3 Bd5 14.h5 Nf4 15.Bh7 Kh8 16.Kf1 Ne6 17.e4 Bb3 18.Qb3+–; B) 12...Qd7 13.Nbd2 (13.Be2 h6 14.Nc3 Qd8 15.Rc1 Bg4 16.d5 Nce7 17.Qb3 c6 18.h5=) 13...Qg4 14.d5 Nce5 15.h5 Bf5 16.Qb3 Nf4 17.Be5 Be5 18.0–0–0+=; C) 12...h6 13.Nbd2 (13.Be2 Bg4 14.d5 Nce7 15.h5 Nf8 16.Qc3 Nf5 17.Qc4 Bf3 18.Bf3=; 13.Bc4 Na5 14.Ba2 Ne7 15.Nc3 Bf5 16.e4 Nec6 17.d5 Ne5 18.Nd4=; 13.Nc3 Bg4 14.Ne4 Bf3 15.gf3 Nh4 16.Be2 Rb8 17.d5 Ne5 18.f4=; 13.Bb5 Bd7 14.Bc4 Na5 15.Ba2 Ne7 16.Bc3 c6 17.Qa4 Bc7 18.Ne5=; 13.d5 Nce5 14.Ne5 Be5 15.Be5 Re5 16.Nc3 Bf5 17.Qa4 a6 18.Qb4=) 13...Be6 14.Bc4 Bc4 15.Nc4 Rc8 16.Rb1 Rb8 17.d5 Nce5 18.Bd4=; D) 12...Bg4 13.Nbd2 (13.Bb5 Rb8 14.d5 a6 15.Be2 Nce7 16.h5 Nf4 17.ef4 Nd5 18.Kf1=; 13.Bd3 Bh5 14.Nbd2 Rb8 15.Rg1 Nf8 16.d5 Ne5 17.Be4 Bg6 18.Rh1+=) 13...Be6 14.Bd3 Bd5 15.h5 Nf8 16.e4 Be6 17.0–0 Bg4 18.h6+=; E) 12...Nf4 13.Ng5 g6 14.Bc4 Re7 15.h5 Bf5 16.e4 Qe8 17.hg6 Bg6 18.f3+=; F) 12...Rb8 13.Bd3 Bg4 14.h5 Nf8 15.h6 g6 16.Nbd2 Nd7 17.0–0 Bf8 18.Be4=.

11.h4 h6 12.Bb5 A) 12...Bg4 13.Kf1 (13.Bc6 bc6 14.Kf1 Nh5 15.d3 c5 16.Nbd2 Rb8 17.Rb1 Qe7 18.Nc4=) 13...Nd5 14.Bc6 bc6 15.Qc6 Ne7 16.Qc3 Nf5 17.d3 Rb8 18.Nbd2=; B) 12...Bd7 13.g3 (13.0–0 Ng6 14.Qc3 Nge5 15.Ne5 Be5 16.d4 Bf6 17.Bc4 Bh4 18.Nd2–/+; 13.Bc4 Bg4 14.Rg1 a6 15.Qb3 Qd7 16.Qc2 Rad8 17.g3 Ne6 18.Bd5–/+; 13.Kd1 Ne6 14.Nc3 Ne5 15.d3 Nc5 16.Ne5 Be5 17.Bd7 Qd7 18.d4+=; 13.Qc3 Nh5 14.d3 Ne5 15.Bd7 Qd7 16.Ne5 Be5 17.d4 Bd6 18.Qb3–/+; 13.Rg1 a6 14.Bc4 Bg4 15.Qb3 Qd7 16.Bf1 Rad8 17.d4 b5 18.Nbd2–/+) 13...Ne5 14.Ne5 Ng2 15.Kf1 Bb5 16.Nc4 Be5 17.Kg2 Qd5 18.e4=.

11.h4 h6 12.Qc3 Bf8 13.Rg1 (13.Qc4 Nd5 14.Nc3 Be6 15.Nd5 Bd5 16.Qg4 Re4 17.Qg3 Qd7 18.Bb5+=; 13.d4 Bf5 14.Nbd2 Rb8 15.Rc1 a6 16.Qb3 Qd7 17.g3 Nd5 18.Bg2+=; 13.Rh2 Bg4 14.d4 Bd6 15.Rh1 Nd5 16.Qc2 Qf6 17.Be2 a6 18.Nbd2+=; 13.g3 Qd5 14.gf4 Qf3 15.Rg1 Bg4 16.Qb3 Rad8 17.Bb5 a6 18.Bf1–+; 13.Kd1 Nd5 14.Qb3 a6 15.Nc3 Nb6 16.Qc2 Bg4 17.Be2 Be6 18.Ne4+=) 13...Bg4 14.d4 a6 15.Nbd2 Nd5 16.Qc2 Be7 17.Bc4 Nb6 18.Bd3 +=.

11.h4 h6 12.Nc3 A) 12...Be6 13.d3 (13.Rc1 Rc8 14.Bb5 Bg4 15.Kf1 Ne6 16.Qe4 Bf3 17.Qf3 Ne5 18.Qf5+=; 13.Rb1 Qe7 14.Nb5 Bd5 15.Qc3 f6 16.Nd6 Qd6 17.d4 Qe6 18.Bc1+=; 13.Bb5 Bg4 14.Kf1 Bf3 15.gf3 Ng6 16.Bc6 bc6 17.f4 Nh4 18.Ne4=) 13...Nd5 14.Ne4 Rb8 15.Be2 Be7 16.Rb1 Bg4 17.Qc4 Qd7 18.Nc5=; B) 12...Bg4 13.0–0–0 (13.Ne4 Bf5 14.Qc3 Bf8 15.Nc5 Qd5 16.Rc1 Bg4 17.Qc4 Bf3 18.gf3+=; 13.Nb5 Bh5 14.Rc1 Bf3 15.gf3 Be5 16.d4 Nd4 17.Bd4 Bd4 18.Qc7+=; 13.Ne2 Nd5 14.Ned4 Nd4 15.Nd4 c5 16.Nb5 Ne3 17.de3 Re3 18.fe3–+) 13...Ng6 14.d4 Qe7 15.Qb3 Rab8 16.Bd3 Bf3 17.gf3 Nh4 18.f4=; C) 12...Ng6 13.Bb5 (13.Nb5 Bg4 14.Nd6 cd6 15.Be2 Rc8 16.Qa4 h5 17.Rc1 a6 18.Bc3=; 13.Rc1 Bg4 14.Ne4 Bf3 15.gf3 Nce5 16.Rh3 Nh4 17.Be5 Be5 18.d4=; 13.Rb1 Nce5 14.Ne4 Nf3 15.gf3 Bf5 16.Bd3 Be5 17.Be5 Ne5 18.Be2=; 13.d4 Bg4 14.Ne4 Bf3 15.gf3 Nh4 16.Be2 Rb8 17.d5 Ne5 18.f4=; 13.Bd3 Nce5 14.Ne5 Ne5 15.Nb5 Nd3 16.Qd3 Re6 17.Qd4 Rg6 18.Nd6+=) 13...Bd7 14.Ne4 Nb4 15.ab4 Bb5 16.Nd4 Bd7 17.h5 Nf4 18.ef4=; D) 12...Bf8 13.Bb5 Bg4 14.Kf1 Nd5 15.Qd3 Nde7 16.Qd8 Red8 17.d4 Be6 18.Rd1=; E) 12...a6 13.Kd1 (13.d4 Be6 14.Rd1 Nd5 15.Nd5 Bd5 16.Bc4 Ne7 17.e4 Bc4 18.Qc4+=; 13.0–0–0 Ng6 14.d4 Qe7 15.h5 Nf8 16.Nd5 Qd8 17.Ne5 Na5 18.Nf4+=; 13.d3 Bf5 14.0–0–0 Ne6 15.Be2 Rc8 16.Kb1 Qd7 17.Rhg1 Nc5 18.Nd5–/+; 13.Ne4 Bf5 14.Qc3 Bf8 15.Nc5 Qd5 16.Nb7 Rab8 17.Kd1 Nd3 18.Bd3–+; 13.Rb1) 13...Ng6 14.Ne4 Bf5 15.Bd3 Be5 16.Ne5 Nce5 17.Nf6 Qf6 18.Bf5+=; F) 12...Qe7 13.Rg1 (13.Bb5 Bg4 14.Kf1 Ne6 15.d4 a6 16.Be2 Nf8 17.h5 Rad8 18.d5+=; 13.d4 Bg4 14.d5 Nd8 15.Nh2 Bh5 16.g3 Bg6 17.Qd1 Nh5 18.Qf3+=; 13.Ne2 Nd5 14.Nc3 Be6 15.Bb5 Qd7 16.Bc6 Qc6 17.Nd4 Qd7 18.Ne6+=; 13.0–0–0 Ng6 14.Qb3 a6 15.d4 b5 16.Bd3 Na5 17.Qa2 Be6 18.d5–/+; 13.Nb5 Bg4 14.Qc3 Ne6 15.d4 Rad8 16.Rc1 Bf4 17.Bc4 Bf3 18.gf3–/+) 13...a6 14.d3 Bf5 15.g4 Bh7 16.Kd1 Ne6 17.g5 h5 18.Nd5+=.

11.h4 h6 12.Bc4 Bg4 13.Kf1 (13.Rg1 a6 14.Qb3 Qd7 15.a4 Nb4 16.Kf1 b5 17.ab5 ab5 18.Ra8–/+; 13.0–0 Ne6 14.Be2 Bf3 15.Bf3 Qh4 16.g3 Qe7 17.Bc6 bc6 18.Nc3+=; 13.Bf1 Qd7 14.Qc3 Ne5 15.Ne5 Be5 16.d4 Ne6 17.Qd3 Nd4 18.Nc3–+) 13...Ne6 14.Bb5 Rb8 15.d3 Bf3 16.gf3 Be7 17.Nd2 Bf6 18.Rb1 +=.

11.h4 h6 12.Kd1 A) 12...Nd5 13.Bb5 (13.Bc4 Be6 14.d3 a6 15.Nbd2 Qd7 16.Ne4 Rad8 17.Rc1 Bf8 18.Ned2+=; 13.Nc3 Nf6 14.Bb5 Bd7 15.d4 a6 16.Bd3 Rc8 17.Ne4 Ne4 18.Be4+=; 13.Be2 Be6 14.Bb5 Nde7 15.Qc3 f6 16.e4 a6 17.Bc4 Bc4 18.Qc4+=; 13.Bd3 Ne5 14.Be5 Be5 15.Bh7 Kh8 16.Ne5 Re5 17.Be4 Be6 18.Ke1+=; 13.Qb3 Nf6 14.Bc4 Qe7 15.Bf6 Qf6 16.Nc3 Bg4 17.Be2 Rab8 18.d4–/+) 13...Bd7 14.Bc4 Be6 15.d3 a6 16.Nbd2 f5 17.Re1 Rb8 18.e4+=; B) 12...Ng6 13.Nc3 (13.d4 Bg4 14.Be2 Be7 15.h5 Nge5 16.Ne5 Ne5 17.Nd2 Be2 18.Ke2+=; 13.Bb5 Bd7 14.d3 a6 15.Bc4 Nge5 16.Nbd2 Bf5 17.e4 Nc4 18.Nc4+=; 13.Bd3 Nce5 14.Ne5 Ne5 15.Be4 c6 16.d4 Nc4 17.Nd2 Nb2 18.Qb2–/+; 13.Be2 Be6 14.d3 Be7 15.h5 Nf8 16.Ke1 Nd7 17.Kf1 Nf6 18.Nbd2+=; 13.d3 Be6 14.Be2 Nge5 15.Ne5 Ne5 16.Nc3 Bf5 17.Nb5 c5 18.e4+=) 13...Bg4 14.Be2 Be7 15.h5 Nh4 16.Nh4 Be2 17.Ke2 Bh4 18.Kf1+=; C) 12...Nh5 13.d4 (13.Nc3 Nf6 14.Bb5 Bd7 15.d3 Ne5 16.Bd7 Qd7 17.Ne2 Nfg4 18.Rf1–/+; 13.Bc4 Be6 14.Be6 Re6 15.d3 Rg6 16.Rg1 Nf6 17.Nbd2 Be7 18.Nc4+=; 13.Bb5 Bd7 14.d3 Nf6 15.Nc3 a6 16.Bc4 Bg4 17.Ne2 Na5 18.Ba2–/+; 13.Ba6 Rb8 14.Bb5 Bd7 15.d3 a6 16.Bc4 Nf6 17.Nc3 Bg4 18.Ne2–/+; 13.Bd3 Nf6 14.Nc3 Ne5 15.Ne4 Bg4 16.Nf6 Qf6 17.Bh7 Kh8 18.Be4–/+) 13...Nf6 14.Nc3 Ng4 15.Kc1 Bd7 16.Bd3 Nf6 17.Rd1 Qe7 18.Na4+=.

11.h4 h6 12.g3 A) 12...Ng6 13.d4 (13.Bd3 Nge5 14.Bh7 Kh8 15.Be4 Nf3 16.Bf3 Bd7 17.d3 Ne5 18.Be4+=; 13.Bg2 Be6 14.Nd4 Nd4 15.Bd4 c6 16.0–0 Ne7 17.Qb2 Nf5 18.Bc3+=) 13...Be6 14.Bg2 Bd5 15.Nbd2 Qf6 16.0–0 Qe6 17.Rfe1 f5 18.Bh3+=; B) 12...Nh5 13.Rg1 (13.Bc4 Be6 14.Be6 Re6 15.d3 Bg3 16.Qd2 Qe7 17.fg3 Re3 18.Kf2–/+; 13.Bb5 Bd7 14.Bc4 Be6 15.Be6 Re6 16.0–0 Nf6 17.d3 Qe7 18.Nc3+=; 13.Nc3 Bg4 14.Bg2 Ng3 15.fg3 Bf3 16.Bf3 Nd4 17.Qd1 Bg3 18.Kf1 Nf3+=; 13.Bg2 Be6 14.Nc3 Nf6 15.d3 Rc8 16.Rb1 Bf5 17.Nd2 Nd4 18.Qa4=; 13.Be2 Nf6 14.d4 Be6 15.Nc3 a6 16.Rd1 Bg4 17.d5 Ne5 18.Ne5+=) 13...Bg4 14.Bg2 Qe7 15.Nc3 Nf6 16.Nb5 Rec8 17.Nfd4 Nd8 18.Nd6=; C) 12...Nd5 13.Bg2 (13.Bd3 Be6 14.Be4 Qd7 15.Qd3 Nde7 16.Qc3 f6 17.0–0 Rad8 18.Rc1–/+; 13.Qb3 Be7 14.Bg2 Nb6 15.0–0 Be6 16.Qc3 Bf6 17.d4 Be7 18.Rc1+=; 13.Rg1 Bg4 14.Bg2 Qd7 15.Nd4 Nd4 16.Bd4 c5 17.Bb2 Ne3 18.fe3–+; 13.Bc4 Be6 14.d3 Rb8 15.Nbd2 b5 16.Ba2 Rb6 17.e4 Nf6 18.Be6+=; 13.Be2 Be6 14.e4 Bg4 15.Nc3 Bf3 16.Bf3 Nd4 17.Qd1 Nc3 18.Bc3–/+) 13...Be6 14.Nc3 Nf6 15.d3 Rc8 16.Rb1 Bf5 17.Nd2 Nd4 18.Qa4=.

11.Nc3 a6

12.d4 A) 12...Be6 A1) 13.Ne2 Ng6 (13...Ne2 14.Be2 Bd5 15.0–0 Qe7 16.Rfc1+=) 14.Nc3 Nh4 15.Nh4 Qh4 16.Be2+=; A2) 13.Rc1 Qd7 (13...Ra7 14.Ne2 Ne2 15.Be2 Bd5 16.Bd3=) 14.Ne4 Bd5 15.Nd6 Qd6 16.Qf5+=; A3) 13.Rd1 Bg4 (13...Qf6 14.d5 Bf5 15.e4 Ne5 16.Nd4=; 13...Qc8 14.d5 Bf5 15.e4 Ne5 16.Nd4=) 14.Ne4 Qe7 15.Neg5 g6 16.Qc3+=; B) 12...Bd7 13.d5 Ne5 (13...Na7 14.g3 Ng6 15.Bg2 c5 16.dc6=) 14.Nd2 Nfg6 15.Nce4 b5 16.a4=; C) 12...Bg4 C1) 13.Ne2 Ng6 14.d5 Bf3 15.gf3 Nce5 16.Nd4–/+; C2) 13.0–0–0 Ng6 14.h3 Bf3 15.gf3 Qe7 16.Nd5+=.

12.Ne4 Bf5 13.Qc3 Bf8 14.Nc5 Rb8 15.Rc1 Qd5 16.Qc4 +=.

12.h3 Qe7 13.g3 Ng6 14.Bg2 Be6 15.d4=.

12.h4 g6 13.0–0–0 (13.Ne4 Bf5 14.Qc3 Be5 15.Ne5 Re5+=) 13...Nh5+= (13...Bf5 14.d3 Nh5 15.Ne4+=) 14.Ne4 Ne5 (14...Be6 A) worse is 15.Nd6 cd6 (15...Qd6?! 16.Ng5+=) 16.Qc3 f6+=; B) 15.Qc3 f6 16.Bc4+= (worse is 16.Nd6 cd6 17.Re1 Rc8–/+); C) 15.Nfg5=; 14...Bg4 15.d4=) 15.Qc3 (15.Be5 Be5 16.Ne5 Re5=; 15.Ne5=) 15...b5 (15...Bg4 16.Be2+=) 16.Nfg5 (16.Ne5 Be5 17.d4+=) 16...Bf5 (16...h6 17.f4 hg5 18.fe5 Be5 19.d4–/+) 17.f4 h6 18.Nf3 (18.fe5!? Be5 19.d4+=) 18...Be4–/+ 19.fe5 Be7 20.d4 (20.d3 Bd5+=) 20...Ng3 21.Rg1 Qd5 22.Nd2 f5 (22...Bh4 23.Qb3–+) 23.Qb3 (better is 23.h5!?–/+) 23...Bh4–+ (worse is 23...Nf1 24.Qd5 Bd5 25.Rdf1 Bh4 26.g4 fg4 27.e4+=) 24.Qd5 Bd5 25.Nf3 Be7 26.Kb1 Kf7 27.Bd3 Ke6 28.Rc1 c6 29.Nd2 a5 (29...Rad8 30.Nf1 Ne4 31.g4–+) 30.Rce1 (30.Rge1 b4 (30...Bg2 31.Rg1 Bd5 32.Rg3+=) 31.a4 Ne4 (31...Bg2 32.Rg1 Bd5 33.Rg3+/–) 32.Ne4 fe4–+ (worse is 32...Be4 33.Be4 fe4 34.Rc6 Kd5 35.Rec1+=)) 30...b4 31.a4 c5 32.Nc4 (32.e4 fe4 33.Ne4 Ne4 34.Be4 Be4 35.Re4 c4–+) 32...Reb8 33.Nd2 (33.Rc1 Ne4–+) 33...Rc8 (33...Ne4 34.Be4 fe4 35.dc5 Bc5 36.Rh1–+) 34.Rc1 (34.e4 fe4 35.Ne4 Ne4 36.Be4 Be4 37.Re4 c4–+) 34...Ne4 (34...Bg5!? 35.Nc4–+) 35.Ne4 fe4 36.Bc4 Bc4 37.Rc4 Kd5 38.Rgc1 Ra6 39.g4 (39.Ka2–+) 39...Rac6 40.R1c2 (40.dc5 Bc5 41.R4c2 Be7 42.Rc6 Rc6–+) 40...Bg5 41.e6 cd4 (better is 41...h5 42.gh5 gh5 43.Rc5 Rc5 44.dc5 Be3–+) 42.Rd4–/+ Ke6 43.Re4 Kd7 44.Rc6 (44.Rd2 Rd6 45.Rd6 Kd6–/+) 44...Rc6–+ 45.Re5 Bd8 46.Bd4 Bc7 47.Rb5 Re6 48.Rd5 Kc6 49.Rc5 Kd6 50.Rc2 (50.Rb5 Re4–+) 50...Bd8 (50...Re4 51.Rh2–+) 51.Ka2 (51.Rd2 Ke7–+) 51...Kd5 (51...h5 52.gh5 gh5 53.Rd2–+) 52.Kb3 (52.Rc8 Bb6 53.Bb6 Rb6–+) 52...Ke4 53.Rc8 Bg5 (53...Rd6!? 54.Rc4 Kf3 55.Bc5 Rd3 56.Kc2–+) 54.Ra8–/+ Kf3 55.Ra5 Kg4 56.Kb4 h5 57.Ra8 h4 58.Rc8 h3 59.a5? (59.Rc1 h2–+) 59...h2 (better is 59...Re4 60.a6 Be3–+) 60.Rc1 Be3 (60...Be3 61.Be3 Re3–+) 0–1. Kuehn,Peter – Antoszkiewicz,Gerhard, corr DDR, 1985.

12.h4 Ng6 13.Bd3 (13.Be2+= Nce5 14.h5 Nf3 15.gf3=) 13...Nce5 14.Ne5 Be5 15.h5=.

12.0–0–0 Ng6

13.d4 Ra7 14.h4 Bg4 15.Bd3 Nf8 16.Ng5=.

13.d4 Rb8 14.h4 Bg4 15.h5 Nge7 16.h6+=.

13.d4 Qd7 14.Ne4 Qe7 15.Nd6 cd6 16.h4=.

13.d4 Bd7 14.Ne4 Bf5 15.Bd3 Qe7 16.Nf6=.

13.d4 Qe7 14.Nd5 Qf8 15.Bc4 Na5 16.Ba2+=.

13.d4 Bg4 14.h3 Bf3 15.gf3 Qe7 16.Nd5+=.

13.d4 b5

14.Nb5 ab5 15.Qc6 Bd7 16.Qc3+=.

14.Ne4!? Nce7 15.h4+= h5 16.Be2+=.

14.h4 b4–/+

15.ab4 Bb4?! 16.h5+= (16.Na2 Qd5 17.Bc4+=).

15.ab4 Nb4

16.Qa4 A) 16...Bd7 17.Qa5 Rb8 (17...Nc6 18.Qh5 Qe7 19.Ng5 h6 20.Qg6+=) 18.Rd2 Bg4 19.h5 Ne7 20.h6+=; B) 16...Bf5 B1) 17.Qa5 Bc2 (17...Qd7 18.h5 Ne7 19.d5 Rab8 20.h6–/+) 18.Rd2 Bb3 19.d5 Ne5 20.Ne5–/+; B2) 17.Qa1 a5 (17...Bc2 18.Rd2 Bb3 19.h5 Ne7 20.Ba3–/+) 18.h5 Ne7 19.Bc4 h6 20.e4–/+; B3) 17.Rd2 Bd7 18.Qa5 Bg4 19.Bc4 h6 20.h5–/+.

16.Qb1 a5 A) 17.h5 Ne7 (17...Nf8 18.h6 g6 19.Kd2 Be6 20.Qa1–/+) 18.h6 g6 19.Ne4 Ned5 20.Nd6–/+; B) 17.Bb5 c6 (17...Bd7 18.Kd2 h6 19.Bc4 Be6 20.Be6–/+) 18.Bc4 Ba6 19.Bb3 Rb8 20.h5–/+; C) 17.Qa1 Bf5 18.h5 Ne7 19.Bc4 h6 20.e4–/+; D) 17.Bc4 Ba6 (17...Bg4 18.Ne4 Bf3 19.gf3 Nh4 20.Rh3+=) 18.Ba6 Ra6 19.h5 Ne7 20.Kd2–/+; E) 17.Kd2 a4 (17...Bg4 18.Be2 a4 19.h5 Ne7 20.Bb5–/+; 17...Be6 18.h5 Nf4 19.Nb5 h6 20.Nd6+=; 17...Bb7 18.Qf5 Ne7 19.Qh5 Qd7 20.Ra1+=; 17...Bd7 18.h5 Nf4 19.Nb5 Bb5 20.Bb5+=) 18.Bb5 Bd7 19.h5 Nf4 20.Ng5–/+.

16.Qb1 Ra7 A) 17.h5 Ne7 (17...Nf8 18.Kd2 h6 19.Bc4 c6 20.Ke1+=) 18.h6 g6 19.Bc4 Nec6 20.Kd2–/+; B) 17.Qa1 Bf5 (17...Bb7 18.h5 Ne7 19.h6 g6 20.Nb5+=; 17...Rb7 18.h5 Nf8 19.Kd2 h6 20.d5+=; 17...Be6 18.h5 Ne7 19.h6 g6 20.Ne4+=; 17...Bg4 18.h5 Ne7 19.h6 g6 20.Nb5+=; 17...Qf6 18.h5 Ne7 19.Qa4 Rd8 20.Ne4+=) 18.Nb5 Nc2 19.Qa2 Rb7 20.Nd6–/+; C) 17.Kd2 Be6 (17...Bb7 18.Qf5 Ne7 19.Qh5 g6 20.Qg5+=; 17...Bg4 18.Be2 h6 19.Ba3 c5 20.Ke1+=; 17...Rb7 18.Ke1 a5 19.Be2 Be6 20.Rd2+=) 18.Ba3 c5 19.Ke1 Qa5 20.Bb2–/+; D) 17.Rd2 Bg4 (17...Be6 18.Ng5 Bg4 19.Bc4 c6 20.Nh7+=) 18.Bc4 Bf3 19.gf3 Qf6 20.h5+=.

16.Qb1 Bb7 17.Qf5 Re6 (17...Ne7 18.Qh5 Qd7 19.Bc4 Rf8 20.e4+=) 18.Qh5 Re7 19.Ng5 Nf8 20.Bc4+=.

16.Qb1 Bd7 A) 17.Be2 a5 (17...Qf6 18.h5 Bf5 19.Qa1 Ne7 20.h6+=; 17...Ne7 18.Kd2 Ned5 19.Ng5 Nf6 20.Bc4+=; 17...Nf8 18.Kd2 a5 19.Nb5 Be7 20.Ne5–/+; 17...Be6 18.d5 Bg4 19.Kd2 Bf3 20.Bf3+=) 18.Kd2 a4 19.h5 Ne7 20.h6–/+; B) 17.Rd2 a5 (17...Bg4 18.h5 Ne7 19.Ne5 Be6 20.h6+=) 18.Kd1 a4 19.Qa1 Bg4 20.Be2–/+; C) 17.h5 Nf8 (17...Ne7 18.h6 g6 19.Bc4 Nc8 20.Ba3–/+) 18.h6 g6 19.Kd2 Rb8 20.d5–/+; D) 17.Kd2 a5 (17...h6 18.Bc4 Be6 19.Be6 Re6 20.d5+=; 17...Be6 18.Ke1 Ne7 19.Be2 h6 20.e4+=; 17...Bc6 18.Qf5 Ne7 19.Qh5 Qd7 20.Ne5+=; 17...Bg4 18.Be2 a5 19.h5 Ne7 20.Nb5+=; 17...Rb8 18.Ke1 a5 19.Be2 a4 20.h5+=) 18.Nb5 Nd5 19.Nd6 cd6 20.h5+=; E) 17.Bc4 Bg4 18.Ne4 Qd7 19.h5 Qc6 20.Nd6+=.

16.Qb1 Be6 A) 17.Kd2 Bb3 (17...Rb8 18.Ke1 Bg4 19.Be2 Bf3 20.Bf3+= 17...a5 18.h5 Nf4 19.Nb5 Bg4 20.Nd6+=; 17...Ne7 18.Ng5 Bf5 19.Nce4 Nbd5 20.Bd3–/+; 17...Nd5 18.Qa1 Bb4 19.h5 Nge7 20.h6+=; 17...Ra7 18.Be2 Nd5 19.h5 Nge7 20.Ng5+=; 17...h6 18.Ke1 Ne7 19.Ne5 Ned5 20.Bc4–/+) 18.Rc1 c5 19.h5 Nf4 20.Ba3–/+; B) 17.Rd2 Ne7 18.Kd1 h6 19.Ne5 a5 20.Bc4–/+; C) 17.Be2 Bb3 18.Rd2 Nd5 19.Nd5 Bd5 20.h5–/+; D) 17.h5 Ne7 18.h6 g6 19.Kd2 Ned5 20.Nd5–/+; E) 17.d5 Bc8 (17...Bd7 18.Kd2 a5 19.Ke1 c6 20.dc6+=; 17...Bg4 18.h5 Ne7 19.h6 g6 20.Qe4+=) 18.Kd2 a5 19.Ke1 Bd7 20.Be2+=.

16.Qb1 Ne7 A) 17.Bc4 Bf5 18.Qa1 Nc8 19.Ng5 Re7 20.Qa5–/+; B) 17.Kd2 Bf5 (17...Be6 18.Ng5 Bf5 19.Nce4 Nbd5 20.Bd3–/+; 17...c6 18.Bc4 Bf5 19.e4 Bg4 20.Ke1–/+; 17...a5 18.Bc4 Bf5 19.Qa1 Nc8 20.Ng5–/+; 17...Ned5 18.Ng5 Nf6 19.Bc4 Re7 20.Nge4+=) 18.e4 Ned5 19.Re1 Qd7 20.Re2–/+; C) 17.Qa1 Ned5 18.Nd5 Nd5 19.Ne5 Bb7 20.e4–/+; D) 17.Rd2 Be6 (17...a5 18.Bc4 h6 19.Ne5 Be6 20.Be6+=; 17...c6 18.Bc4 h6 19.Ne5 Be5 20.de5+=) 18.Kd1 h6 19.Ne5 Rb8 20.Ne4+=.

16.Qb1 Bg4 17.Bc4 (17.Kd2 Bf3 (17...a5) 18.gf3 Nh4 19.Be2 Be7 20.Ke1–/+; 17.h5 Nf4 (17...Ne7) 18.h6 g6 19.Qa1 Nfd5 20.Qa5–/+; 17.Be2 Nf4 18.Bc4 h6 19.Ne5 Be5 20.de5+=; 17.Qa1 Qf6 18.h5 Nf4 19.d5 a5 20.h6–/+) 17...a5 (better is 17...Bf3!? 18.gf3 Qf6 (18...Nh4+= 19.Rh3 Be7 20.Rdh1=) 19.h5 Nf8 20.f4+=; 17...Rb8 18.Ng5 Re7 19.f3 Bd7 20.Nh7+=; 17...Rc8 18.Ng5 Re7 19.f3 Bd7 20.Nh7=; 17...Ra7 18.Ba3 Nd5 19.Bd5 Ba3 20.Kd2+=) 18.Ng5= Re7 19.f3 Be6 (19...Bc8!? 20.Nh7 Be6+=) 20.Be6+= fe6 21.Nh7 Nf8 (21...Kh7 22.h5) 22.Nf8 Qf8 23.Ne4 (23.Kd2 Nd5+=) 23...Ra6 (23...a4!?+=) 24.Kd2+/– Rb6 (24...Nd5 25.Ng5 Qf5 26.g4 Qb1 27.Rb1+/–) 25.Ng5 Qf5 26.g4 Qb1 27.Rb1 Nd5 28.Rhc1 Bg3 29.Ba3 Re8 30.Ne4 (30.Rb6 cb6 31.Ne4 Bh4+–) 30...Rb1 31.Rb1 (31.Ng3? Rb3 32.e4 Rf3–+) 31...Bh4 32.g5 Kf7 33.Rh1 Rh8 34.f4 Kg6 35.Ke2 a4 (35...Kf5 36.Kf3+/–) 36.Kf3 Rb8 (better is 36...Kh5!?+–) 37.Nc5 (37.Rh4?! Rb3 38.Bc1 Rb1+–) 37...Kh5 38.Ne6 (38.e4 Ne7 39.Bc1 Rb6+–) 38...Rb3 39.Bc1 (39.Ng7?! Kg6 40.Bc1 Bg5 41.fg5 Kg7+/–) 39...Rb1?? (39...a3 40.Rh2 Rc3+–) 40.f5 (40.Ng7 Kg6 41.Ne6 a3 42.Rh4 a2 43.f5 Kf5+–) 40...a3 (40...c6 41.Rg1 (41.Ng7?! Kg5 42.e4 Kf6+–) 41...Rb7 42.e4 Rb3 43.Ke2 Nc3 44.Kf1+–) 41.Rg1 Bg5 42.Rg5 Kh6 43.Rg3 (43.Rg3 Nf6 44.Rh3 Nh5 45.Ba3 Rf1 46.Ke4+–) 1–0. Kuehn,Peter – Hobusch,Werner, corr DDR–ch11 sf09, 1981.

11.Nc3 Bg4

12.0–0–0 Ng6 13.d4 Qe7 14.Nd5 Qf8 15.Rd2 Na5 16.Qc3 (16.Nc7? Bc7 17.Kd1 Rac8–+) 16...b6 17.Ne1?? (better is 17.Kd1+=) 17...c6 (better is 17...Be6!? 18.Nb4 Nb3 19.Kd1 Nd2 20.Qd2 Bb3 21.Nbc2 Ba3–+) 18.Nb4 Bf4 (better is 18...c5 19.dc5 Rac8–+) 19.h3 (19.Ba6!? Bg5 20.Ned3–/+ (20.Nc6? Nc6 21.d5 Na5–+)) ½–½. Vieito Soria,Luis M (1975) – Cottarelli,Franco (2215), corr ICCF TT 6–02–1, 2002.

12.0–0–0 Ng6 13.d4 Nh4 14.d5 Ne5 15.Ne5 +=.

12.0–0–0 Ng6 13.h3 Bd7 14.h4 h6 15.d4 Qe7 16.h5 Nf8 17.Nd5 Qe6 18.Nf4 Qf5 19.Qf5 Bf5 20.Bd3 Bd3 21.Nd3 Na5 22.Nd2 Nd7 23.Bc3 Nc6 24.Kc2 Nf6 25.Rb1 b6 26.Nc4 Rad8 27.a4 Nd5 28.Kb3 Re6 29.g3 Rde8 30.Rhc1 a5 31.Rc2 Rd8 32.Rd1 Nce7 33.g4 Nc6 34.Rcc1 Rde8 35.Bd2 Rd8 36.Nd6 Rdd6 37.Rc4 Kh7 38.Re1 Rd8 39.f4 Rdd6 40.e4 Ndb4 41.d5 (41.Nb4?! Nd4 42.Rd4 Rd4=) 41...Nd3 42.de6 Re6 43.Re2 Nc5 44.Kb2 f6 45.Kb1 Nd3 46.Bc1 Nc5 47.Ba3 Nb4 48.Bb4 ab4 49.a5 b3 50.e5 Kg8 51.f5 Re7 52.e6 1–0. pcmvr – pierred (2760), net–chess.com, 2011.

12.0–0–0 Ng6 13.h3 Be6 14.d4 Na5 15.d5 Bd7 16.Kb1 Qe7 17.Nb5 b6 18.h4 (18.Nc7? Bc7 19.Ba6 Bd6–+) 18...a6 19.Nc3? (19.Nd6 cd6 (19...Qd6 20.h5 Nf8 21.h6+–) 20.h5 Ne5=) 19...Ne5 (19...Ba3!? 20.h5 Ne5 21.Ne5 Bb2 22.Nd7 Bc3 23.Qc3 Qd7=) 20.Ne4 Bf5 21.Nd4 Be4 22.Qe4 Ba3 23.Bc3 (better is 23.Nf5!? Qb4 24.Qb4 Bb4 25.Rc1+=) 23...Qc5–/+ 24.Qc2 Bb4 (worse is 24...Qd5 25.Nf3 Qc5 26.Ne5 Re5 27.Be5 Qe5 28.Bd3+=) 25.Bb2 Nec4 (25...Qd5 26.Nf3 Qe6 27.Be5+–) 26.Nc6 Nb2 (26...Nc6?! 27.Qc4 Ne5 28.Qc5 Bc5 29.Be2+=) 27.Qc5 Bc5 28.Kb2 Nc6 29.dc6 Re6 30.Be2 Bd6 (30...Rc6? 31.Bf3 Rf6 32.Ba8 Rf2 33.Kb3+–) 31.Rd5 a5 32.h5 Rf6 33.Bf3 h6 34.Re1 a4 35.e4 Bc5 36.e5 Rf4 (worse is 36...Bf2 37.Re2 Rf3 38.gf3=) 37.Re2 Rb4 38.Ka2 a3 39.Red2 Rb2 40.Rb2 ab2 41.Kb2 Bf2 42.Be2 Bg3 43.Kc3 Kf8 44.Bc4 Ke8 45.Kb3 Bh2 46.Rd7 Be5 47.Bf7 Kf8 48.Kc4 Ra5 49.Kd3 Bd6 50.Bg6 Rc5 ½–½. pcmvr – rajagopal (2000), net–chess.com, 2011.

12.Nb5 Bf3 13.Nd6 Qd6 14.gf3 Ne5 (14...Rad8 15.Rg1 (15.0–0–0 Nd3 16.Bd3 Qd3 17.Rhg1 g6+=; 15.Rb1 a6 16.h3 b5 17.Rg1 Nd4+=; 15.Rd1 Ne5 16.Be5 Qe5 17.Qb3 b6–/+ –0.84/9) 15...Ng6 16.Rg3 Nd4 17.Qc3 Qb6+=) 15.Be5 Re5 16.Rb1 b6 17.Rb4 (17.d4 A) 17...Re7 18.Bb5 c5 (18...a6= 19.Bc6 Ra7 20.Be4=) 19.dc5 Qd5 20.Rg1=; B) 17...Qd4 18.Rd1 Re3 19.fe3 Qe3 20.Be2–/+; 17.Bc4 Ne6 (17...Qa3 18.0–0 Rg5 19.Kh1 Nd5 20.f4–/+; 17...c5 18.Rg1 Rd8 19.Kd1 Ng6 20.Rg3–/+; 17...Nh3; 17...Re7) 18.0–0 Rg5 19.Kh1 Rh5 20.f4–/+) 17...Rc5 (17...Ne6 18.Bd3 Nd4 19.Bh7 Kh8 20.Rd4–/+ (20.Qb2 Nf3 21.Ke2–/+); 17...Re7 18.Re4 Ne6 19.Qd3 Qc5 20.Qc3+=) 18.Rc4 Rc4 19.Bc4 Ng2 (19...Ng6!?+= 20.Ba2 (20.Qc3–/+ c5 21.f4 Re8 22.Bb5–/+) 20...Re8 21.Qa4 Re7 22.Qa7–/+; 19...Ne6 20.Qd3 Qe7 21.Rg1 Re8 22.Qc3+=) 20.Kf1= Nh4 21.Qe4 (21.Bf7 Kh8 22.Ke2 Rf8 23.Qe4 Rf7 24.Qh4+=) 21...Qd8 22.Rg1 Ng6 (22...a6 23.d4 Ra7 24.Qg4+=) 23.Rg5 (23.f4 b5 24.Bb5+=) 23...Rb8 24.Rf5 (24.Rd5=) 24...Nh8 25.Rd5 (25.d4 Qd6 26.Qe5 Qd7=) 25...Qf8 26.Rd7 Qa3 27.Rc7 a5 28.Qf4 Rf8 29.d4 Qb4 30.Qf5 Qd6 31.Rb7 Qh2 32.Rb6 a4 33.Ke2 Qc7 34.Qb5 a3 35.Rb7 Qd6 36.Qb3 h6 37.Ra7 Qc6 38.Bd3 Qd6 39.Ra3 Re8 40.Qc3 h5 41.Ra6 Qb8 42.Rc6 h4 43.Rc7 h3 44.Qc2 g6 45.Kf1 Qa8 46.Be4 Qa5 47.Rc5 Qa1 48.Qc1 Qa6 49.Rc4 Rc8+/– 50.Bd3 Rc4 51.Bc4 Qa8 52.e4 Qd8 53.Qe3 g5 54.e5 Ng6 55.e6 Kg7 56.ef7 Qc7 57.Bb3+– Qf4 58.Kg1 h2 59.Kh1 Qh4 60.Be6 Qf4 61.Qf4 gf4 62.Kh2 Kf8 63.Kh3 Ke7 64.Bc4 Kf6 65.Kg4 Nf8 66.Kf4 Ng6 67.Ke4 Nf8 68.f4 Ng6 69.f5 Nf8 70.Be6! Nh7 71.d5 Ke7 72.Ke5 Nf8 73.d6 Kd8 74.f6 Ng6 75.Kd4 Nf8 76.Bf5 Nd7 77.Bd7 Kd7 78.Kd5 (78.Kd5 Kc8 79.Kc6 Kb8 80.f8Q Ka7 81.Qf7 Kb8 82.Qb7#) 1–0. Malmstroem,Jan – Thoma,Theo, corr TKM/A008, 1999.

12.Nb5 Bf3 13.gf3 a6 14.Nd6 Qd6 15.0–0–0 +=.

12.Ne2 Ng6 (12...Bf3 13.gf3 Ng6 14.f4 Nh4 15.Qc3=; 12...Nd5 13.Ned4 Nd4 14.Nd4 Be5 15.Bd3=; 12...Ne6 13.d4 Ng5 14.Ne5 Be5 15.de5=; 12...Nh5 13.Ng3 Rb8 14.Bd3 h6 15.Be4=) 13.Qc3 Nce5 14.Ne5 Be5 15.d4+=.

12.Ne4 Bf5 13.Qc3 Bf8 14.Nc5 Rb8 15.Rc1 +=.

12.Ne4 Bf5 13.Qc3 Bf8 14.d3 Qe7 (14...Nd3 15.Bd3 Be4 16.Be4 (16.Rd1+= Qe7 17.Be4 Qe4 18.0–0 Rad8–/+) 16...Re4 17.0–0 Qd5 18.Rfd1 Qc4+=) 15.Nfd2 (15.ef4 Be4 16.de4 Qe4 A) 17.Kd1 Rad8 18.Kc1 Rd5+= (worse is 18...Qf4 19.Kb1+=); B) 17.Kd2 Rad8 18.Kc1 Rd5=) 15...Nd5 16.Qc2 (16.Qb3 Nb6 17.Be2 Be6 18.Qc2 f5=) 16...Bg4 (16...Rad8 17.Be2= Bc8 18.Qb3 Nb6=) 17.Qb3 (17.Rc1 A) 17...Qh4 18.Qb3 Nb6= (18...Ne3 19.Qb7 Ne7+=); B) 17...Rad8 18.h3 Bc8=) 17...Nb6 (17...Qd7 18.Nf3+= (18.Qb7? Rab8 19.Qa6 Rb2–+; 18.d4 Be6=) 18...Na5=) 18.d4 (18.Rc1 Be6= A) 19.Qc2 f5 (19...Qd8 20.Be2 f5 21.Nc3 Rc8 22.0–0=; 19...Bd5 20.Be2 f5 21.Nc5 Qc5 22.Qc5=) 20.Nc5 Bd5 21.d4 Qh4 22.Qd3+=; B) 19.Qd1 Qh4 (19...Rab8 20.Be2 Bd5 21.0–0 Qd7 22.Nc5=; 19...Qd7 20.Be2 Rad8 21.0–0 Qd5 22.Qc2=; 19...Reb8 20.Be2 Nd5 21.Nc5 Qe8 22.Ne6+=; 19...Nd7 20.Qh5 f5 21.Ng5 g6 22.Qh4=; 19...Qd8 20.Be2 f5 21.Nc5 Bc5 22.Rc5=) 20.Be2 Rad8 21.0–0 Qh6 22.Re1=) 18...Be6 (18...Rad8 19.Bd3 Qh4 (19...Qd7 20.Rc1 Be6 21.Qc2 h6 22.0–0=; 19...Rd5 20.0–0 Qd7 21.Rab1 Be7 22.Ng3=; 19...a6 20.0–0 Qh4 21.Qc2 Nd5 22.Rfc1=; 19...Be6 20.Qc2 Bd5 21.0–0 Qh4 22.Ng3+=; 19...Bf5 20.0–0 Rd5 21.Rfc1 Qd7 22.Nc3=; 19...a5 20.0–0 Qh4 21.Rac1 Be6 22.Qc2=) 20.0–0 Be7 21.Qc2 Rd5 22.Rfc1=) 19.Qd1 (19.Qc2 Bd5 (19...Rad8 20.Bd3 Bd5 21.0–0 Qh4 22.Ng3+=; 19...Qh4 20.Bd3 Bd5 21.0–0 Rad8 22.Ng3+=; 19...a5 20.Bd3 Bd5 21.0–0 h6 22.Ng3+=) 20.Bd3 Rad8 21.0–0 Qh4 22.Ng3+=) 19...f5 (19...Qh4 20.Bd3 Bd5 21.Qc2 Rad8 22.0–0=; 19...Rad8 20.Qc2 f5 21.Nc5 Nd4 22.Bd4–/+; 19...Qd7 20.Qc2 Qd5 21.Rc1 Rad8 22.Nc3+=; 19...Nd7 20.Nc3 Nf6 21.Bb5 Rab8 22.0–0=; 19...Qd8 20.Nc5 Bc5 21.dc5 Nd7 22.Qh5+=; 19...a6 20.Bd3 f5 21.Nc5 Ne5 22.Bc2=) 20.Nc5 Bd5 21.Qc2 (worse is 21.Nb7 f4–/+ 22.Qe2–/+; 21.Rb1 Qh4 22.g3+=) 21...Qh4 (21...f4 22.e4+=) 22.Qd3 (22.Qc3+=) 22...g6 23.Rc1 Bh6 24.g3 Qf6 25.Rg1 Nd8 26.Bg2 c6 27.Kf1 Bg7 28.a4 Ne6 29.Nb7 Qe7 30.Na5 Qb4 31.Bd5 cd5 32.Bc3 Qa4 33.Kg2 Rac8 34.Ra1 Qd7 35.Nf3 g5 36.Rgc1 Qf7 37.Nb3 Nc4 38.Ra6 g4 (38...f4 39.ef4 gf4 40.Nbd2+=) 39.Nfd2 Ng5 40.Rca1 Re7 41.Nc5 (41.Bb4 Rec7=) 41...Nd2 (41...Ne4 42.Ndb3+=) 42.Bd2= (worse is 42.Qd2 Rc5 43.dc5 Ne4–/+) 42...Qh5 43.Kh1 Nf3 44.h4 gh3 (worse is 44...Nd2 45.Qd2 Qf7 46.R1a5+=) 45.Bc3 (45.Bb4 Rb8 46.R6a4 f4 47.ef4 A) worse is 47...Nd4 48.Na6 Rb4 49.Nb4+= (worse is 49.Rb4 Nc6 50.Rc1 Nb4 51.Nb4 d4–/+); B) 47...Bd4 48.Ra7 Ra7 (worse is 48...Rb4 49.Re7 Ba1 50.g4+–) 49.Ra7 h2= (49...Bf2 50.g4 Bc5 51.gh5 Ba7 52.Qf3 Rb4 53.Qd5 Kg7 54.h6 Kf6 55.Qd6 Kf5 56.Qb4+–)) 45...Nd2! 46.Kh2 (46.Qd2 Qf3) 46...Qf3 47.Kh3 Re4! 48.Ne4 (48.Qe4 Ne4) 48...Ne4 49.Qf1 f4 (49...Nc3 50.Kh2 Ne4 51.R1a2 Nf2 52.Rf2–+) 50.Ra7 (50.Kh2 fg3 (50...Nc3 51.gf4 Ne4 52.Qg2 Qf2 53.Ra7 Qh4 54.Kg1=) 51.Kg1 gf2 52.Kh2 Qg3 53.Kh1 Qe3–+) 50...Nf2 (50...Nc3?! 51.ef4 Rf8 52.Ra8–/+) 51.Qf2 Qf2 52.Be1 Qf1 53.Kg4 Qe2 0–1. Thoma,Theo – Schulz,Hans_Juergen, TT–17.22 ETC, 2005.

10.Qc2 Nd7

11.Nc3 A) 11...Nf6 12.Ng5 (12.Nb5 Bg4 13.Ng5 h6 14.Nd6 cd6+=; 12.Rb1 c6 13.Ne2 N4d5 14.Ned4 Qe7+=; 12.d4 Bg413.h3 Bd7 14.Bc4 Ng2=; 12.g3 Bg4 13.Ng5 Ne6 14.Ne6Be6+=; 12.d3 Bf5 13.Nb5 c5 14.Rb1 Bf8+=)12...Ng6 13.Bc4 Ne5 14.Nb5 Nc4=; B) 11...Ne5 12.Ne5 (12.Nb5 Nf3 13.gf3 c6 14.Nd6 Qd6+=; 12.Ne4 Bf5 13.Ne5 Be5 14.Be5 Re5=) 12...Be513.d4 Bd6 14.g3 Ng6=.

11.d3 A) 11...Nf6 12.d4 (12.Nbd2 Bf5 13.Rb1 Ba3 14.Ba3 Nd3+=; 12.Nc3 Bf5 13.Nb5 c5 14.Rb1 Bf8+=; 12.g3 Nh313.Nbd2 Be6 14.Rb1 Rb8=) 12...Ne4 13.Ne5 Bf5 14.ef4Be5=; B) 11...Nc5 12.d4 (12.g3 Nd5 13.d4 Bg4 14.Nbd2 Qe7+=) 12...Ne4 13.Ne5 Bf5 14.ef4 Be5=; C) 11...c6 12.Nbd2 (12.Nc3 Ne5 13.Ne5 Be5 14.d4 Bc7+=; 12.g3 Ne6 13.Bg2 Nf6 14.0–0 Nc5=; 12.d4 Qa513.Nbd2 Rb8 14.Kd1 Nd5=) 12...Qa5 13.Bc3 Qc7 14.Ne4Nd5=; D) 11...Nb6 12.Nc3 (12.Nbd2 Bg4 13.Ne4 Bf3 14.gf3 Ng6=) 12...Bg4 13.Ne4 Bf3 14.gf3 Ng6=; E) 11...c5 12.Nbd2 (12.Nc3; 12.g3) 12...Nd5 13.d4 cd414.Bd4 N7f6=; F) 11...Ng6 12.Be2 (12.Nc3; 12.Nbd2; 12.d4) 12...Nf613.Nc3 Be6 14.Nb5 Bd7=; G) 11...Ne5 12.Ne5 (12.Be5 Be5 13.Ne5 Re5 14.Nc3 Bf5+=; 12.Nbd2 Nf3 13.Nf3 Bg4 14.Nd2 Nd5+=) 12...Be513.Be5 Re5 14.Nc3 Bf5+=.

11.d4 A) 11...Qf6 12.Kd1 (12.Nbd2 Nb6 13.Ne5 Bf5 14.Ne4 Be4=; 12.g3 Nd5 13.Nbd2 Qe7 14.Bd3 N7f6=)12...Nh3 13.Bd3 h6 14.Nc3 Ng5=; B) 11...a6 12.Nbd2 (12.g3 Ng6 13.Bg2 Nf6 14.Nc3 c6=; 12.Nc3 Nf6 13.g3 Nh3 14.Bd3 Ng4+=; 12.Kd1 Nd513.e4 Nf4 14.g3 Ng6+=; 12.e4 Nb6 13.g3 Nfd5 14.Bd3Bh3+=) 12...b5 13.g3 Nd5 14.Bd3 N5f6=; C) 11...c6 12.Nbd2 Qe7 13.Nc4 Bc7 14.Rc1 Qe6=; D) 11...Nf6 12.Nbd2 (12.Ne5 N4d5 13.Nd2 Be6 14.Bc4 Rc8=) 12...N4d5 13.Bc4 a6 14.0–0 b5=; E) 11...c5 12.Nbd2 (12.Nc3; 12.g3; 12.Kd1) 12...cd4 13.Nd4Nc5 14.g3 Nfe6=; F) 11...Qe7 12.Nbd2 c6 13.Nc4 Bc7 14.Rc1 h6=; G) 11...b6 12.Nbd2 (12.g3 Bb7 13.Nbd2 Ng6 14.Bc4 a6+=; 12.Kd1 Ng6 13.Bd3 Bb7 14.Nbd2 c5+=; 12.Nc3 Bb713.Nb5 Be4 14.Qa4 a6+=) 12...Bb7 13.g3 Ng6 14.Bc4a6+=.

11.g3 A) 11...Ng6 12.Bg2 (12.d4 Nf6 13.Bg2 c6 14.0–0 Qa5+=; 12.Be2 Nb6 13.0–0 Qd7 14.Nc3 Qe7=) 12...c6 13.0–0 Nb6 14.d3 Be6=; B) 11...Nh5 12.d3 (12.Nc3 Nhf6 13.Nb5 Nb6 14.Nd6 Qd6=; 12.Bg2 Nhf6 13.0–0 c6 14.d3 Ne5=)12...Ndf6 13.Bg2 c5 14.Nbd2 Be6=; C) 11...Ne6 12.Bg2 (12.d3 Ng5 13.Ng5 Qg5 14.Nc3 Nc5+=; 12.d4 Nf6 13.Bd3 Nf8 14.0–0 Ng6=; 12.Bd3 Nf613.0–0 a6 14.e4 Nc5+=; 12.Be2 Nf6 13.0–0 c6 14.Rc1Nc7=; 12.Bc4 Nb6 13.Bd3 h6 14.0–0 Nc5+=)12...Nb6 13.0–0 c6 14.Nc3 Rb8=; D) 11...Nd5 12.Bg2 (12.d3 N7b6 13.Bg2 Be6 14.0–0 c6=; 12.d4 N7f6 13.Bd3 a6 14.0–0 Qe7=; 12.Bd3 N7f613.Nc3 Nc3 14.Bc3 Bg4+=; 12.Nc3 Nc3 13.Bc3 Qe714.Bg2 Nb6+=; 12.Bc4 N7b6 13.Bd3 h6 14.0–0 Bg4+=; 12.Be2 N7f6 13.0–0 Qe7 14.Nd4 Bh3+=)12...c6 13.0–0 N7b6 14.d3 Be6=.

10.Qc2 Bg4

11.Qc3 A) 11...Ne6 12.Bc4 (12.Ne5 Bf5 13.Bc4 Re7 14.d4 Be5+=; 12.Be2 Nd7 13.d4 Nb6 14.Qc2 c5+=) 12...Qe7 13.Nd4 Qg5 14.h3 Qh6=; B) 11...f6 12.Qb3 (12.Ng5 Ne6 13.Bc4 Nc6 14.f3 Ne5=; 12.Bc4 Kh8 13.Ng5 Ng2 14.Kf1 Bh5+=) 12...Be6 13.Bc4 Nd7 14.Be6 Ne6=; C) 11...Nh5 12.Qb3 (12.Bc4 Nd7 13.Qb3 Qe7 14.Nc3 Nf4+=; 12.Bb5 Nd7 13.d3 c6 14.Bc4 b5+=; 12.Be2 Nc6 13.d4 Nf6 14.0–0 Be6+=; 12.d3 Bf3 13.gf3 Nc6 14.d4 Qf6+=; 12.Qc2 Bf3 13.gf3 Nd7 14.d4 Qh4+=) 12...Nd7 13.Be2 Be6 14.Qc2 Nhf6=.

11.Nc3 Nc6 (11...Qe7 12.d3 Nc6 13.Ne4 Bf3 14.gf3 Ne6=; 11...Qd7 12.Ne4 Qf5 13.d3 Bf3 14.gf3 Ng6=; 11...Bf3 12.gf3 Ng6 13.Ne4 Nh4 14.Nd6 Qd6=; 11...Nd7 12.Ne4 Qe7 13.d3 Nd5 14.Be2 N7f6=; 11...Ne6 12.Ne4 Bf3 13.gf3 Nd7 14.d4 Nf6=; 11...c6 12.Ne4 Bf5 13.d3 Nd5 14.Be2 Bc7=) 12.Ne2 (12.Ne4 Bf5 13.Qc3 Bf8 14.Nc5 Qd5+=; 12.0–0–0 Ng6 13.d4 Qe7 14.Nd5 Qd7+=; 12.Nb5 Bf3 13.gf3 a6 14.Nd6 Qd6+=) 12...Nd5 (12...Bf3 13.gf3 Ng6 14.f4 Nh4+=) 13.Nfd4 (13.Ned4 Nd4 14.Nd4 Be5+=) 13...Ne5 (13...Nd4 14.Nd4 Be5+=) 14.h3 (14.f4 Ng6+=) 14...Bh5 (14...Bd7+=) 15.g4 (15.f4 Nd7+=) 15...Bg6–/+ 16.e4? (better is 16.Nf5–/+) 16...Nd3!?–+ (16...Nd3 17.Qd3 Be4–+) 0–1. Hasler,Ulrich – Laube, corr, 1988.

11.d3 Bf3 12.gf3 Qh4 13.Kd1 Nh3 14.Bh3 Qh3 +=.

10.d4 Nc6

11.Nc3 a6 A) 12.Qc2 Bg4 (12...Be6 13.Rd1 Bg4 14.Ne4 Qe7 15.Neg5+=; 12...Bd7 13.d5 Ne5 14.Nd2 Nfg6 15.Nce4=; 12...Qe7 13.d5 Ne5 14.Nd4 Ng4 15.Qd2+=; 12...Rb8 13.Ne2 Ng6 14.d5 Nce5 15.Ne5+=; 12...Ra7 13.d5 Ne5 14.Nd2 c6 15.dc6+=) 13.Ne2 Ng6 14.d5 Bf3 15.gf3+=; B) 12.d5 Ne5 13.Nd4 Bc5 14.Nb3 Bb6 15.h3+=; C) 12.Rc1 Bd7 (12...Bf5 13.g3 Nh3 14.Be2 Qf6 15.Nd5+=; 12...Bg4 13.Ne2 Nd5 14.Nc3 Nc3 15.Rc3+=) 13.d5 Ne5 14.Ne4 Bg4 15.h3–/+; D) 12.Qb3 Bg4 13.Rd1 Qf6 14.d5 Ne5 15.Ne5–/+; E) 12.g3 Nh3 (12...Ng6 13.Bg2 Bg4 14.h3 Bf5 15.0–0=; 12...Nh5 13.d5 Na5 14.Qc2 Bg4 15.Nd2=) 13.d5 Ne5 14.Ne4 Bg4 15.Be2+=.

11.Nc3 Be6 A) 12.Rc1 a6 (12...Bg4 13.h3 Bh5 14.Nb5 Bf8 15.g4+=; 12...Rc8 13.Ne4 Bd5 14.Nc3 Bf3 15.gf3=; 12...Qd7 13.Ne4 Bd5 14.Nc3 Bf3 15.gf3=; 12...Bf5 13.g3 Ng6 14.Nb5 Be4 15.Bg2=; 12...Re7 13.Ng5 Bd7 14.d5 Na5 15.Qc2+=) 13.Ne5 Ne5 14.de5 Be5 15.Qd8–/+; B) 12.Qc2 Rc8 (12...Bg4 13.Ne2 Ng6 14.d5 Bf3 15.gf3+=; 12...Qd7 13.0–0–0 Nd5 14.Nd5 Bd5 15.Bd3=) 13.Rd1 Bg4 14.Ne4 Bf5 15.Ne5+=; C) 12.Nb5 Qf6 (12...a6 13.Nd6 cd6 14.Nd2 Qg5 15.Ne4+=; 12...Rc8 13.Rc1 a6 14.Nd6 cd6 15.Nd2+=; 12...Bd5 13.Nc3 Bf3 14.gf3 Qg5 15.Ne4=) 13.d5 Qb2 14.Rb1 Qa2 15.Nd6–/+; D) 12.Ne4 a6 (12...Rb8 13.Ne5 Be5 14.de5 Ng6 15.Qd8=; 12...Bd5 13.Nc3 Bf3 14.gf3 Qg5 15.Ne4=; 12...Rc8 13.Rc1 Bg4 14.h3 Bf5 15.Nd6+=) 13.g3 Ng6 14.Nd6 Qd6 15.Bg2+=; E) 12.Rg1 a6 13.Qc2 Qd7 14.Ne4 Bf5 15.Nc5–/+; F) 12.h3 Rc8 (12...a6 13.Ne2 Ne2 14.Be2 Bd5 15.Qc2+=) 13.Nb5 a6 14.Nd6 cd6 15.Nd2–/+; G) 12.Ne5 Be5 13.de5 Ng6 14.Qd8 Rad8 15.f4+=.

11.Nc3 Bf5 A) 12.Rc1 Qf6 (12...Bg4 13.h3 Bh5 14.Ne2 Nd5 15.Nc3=; 12...a6 13.g3 Nh3 14.Be2 Qf6 15.Nd5+=; 12...Rb8 13.g3 Ng6 14.Nb5 Be4 15.Bg2+=; 12...Qd7 13.g3 Ng6 14.Nb5 Be4 15.Nd6+=; 12...Rc8 13.g3 Ng6 14.Bg2 Qf6 15.Qb3=; 12...Qe7 13.g3 Ng6 14.Nb5 Be4 15.Nd6+=) 13.d5 Ne5 14.Ne5 Be5 15.g3+=; B) 12.Nb5 Rb8 (12...Be4 13.Rc1 a6 14.Nc3 Bf5 15.g3+=; 12...Be7 13.Ne5 Ne5 14.de5 Nd5 15.Qf3=; 12...a6 13.Nd6 cd6 14.Nd2 Bd3 15.Qf3+=; 12...Rc8 13.Rc1 a6 14.Nd6 cd6 15.Nd2+=; 12...Re7 13.Rc1 a6 14.Nd6 cd6 15.Nd2=; 12...Bg6 13.g3 Nd5 14.Nd6 Qd6 15.Bg2+=) 13.Nd6 Qd6 14.Ne5 Ne5 15.de5+=; C) 12.Qb3 a6 (12...Bg4 13.Qb7 Bf3 14.gf3 Nd4 15.0–0–0=; 12...Rb8 13.Nb5 Be6 14.Qc2 Bd5 15.Qf5+=; 12...Qd7 13.Rd1 Bg4 14.Ne2 Bf3 15.gf3+=; 12...Bd3 13.0–0–0 Bf1 14.Rhf1 Ng2 15.Qb7=; 12...b6; 12...Qc8) 13.0–0–0 Qd7 14.ef4 Bf4 15.Nd2–+; D) 12.g3 Nh3 (12...Ng6 13.Bg2 Qf6 14.0–0 a6 15.Re1=) 13.Rc1 Qf6 14.Nd5 Qh6 15.Bg2+=.

11.Nc3 Bg4 12.Rb1 Rc8 (12...a6 13.Ne2 Nd5 14.Ng3 Qd7 15.Bc4+=; 12...Bf8 13.Ne2 Nd5 14.Ng3 a6 15.Be2=; 12...Bf5 13.Rc1 a6 14.g3 Nh3 15.Be2+=) 13.Ba1 Rb8 14.Nb5 Bf8 15.Bb2 –/+.

11.Nc3 Bg4 12.Nb5 a6 (12...Bf8 13.h3 Bh5 14.Nc3 a6 15.Ne2+=; 12...Rc8 13.h3 Be6 14.Ne5 Be5 15.de5+=) 13.Nd6 cd6 14.Kd2 Nd5 15.Qb3 +=.

11.Nc3 Bg4 12.Rc1 Bf3 (12...a6 13.Ne2 Nd5 14.Nc3 Nc3 (14...Ne3 15.fe3+=) 15.Rc3+=; 12...Qf6 13.Nb5 a6 14.Nd6 Qd6 15.h3+=) 13.Qf3 (13.gf3 Qe7 14.Qa4 a6= 15.Ne4=) 13...Nd4–/+ 14.Qb7 Rb8 (14...c5 15.Qa6–/+) 15.Qa7 Bc5!! 16.Qc5 Rb2 17.Nb1 (17.Ne4 Re4 18.Qc3–+) 17...Re3!! 18.fe3 Ng2 0–1. Kozakiewicz,Stanislaw – Kolendo,Jerzy, corr Poland, 1994.

11.Nc3 Bg4 12.Ne2 Ng6 (12...Nd5 13.Nc3 Be6 14.Ne4 Nf4 15.Rc1+=; 12...Bf3 13.gf3 Nd5 14.Qb3 Nb6 15.Rc1+=; 12...Ne6 13.Qb3 Rb8 14.Rc1 Ng5 15.Nd2=) 13.Qb3 Rb8 14.Rd1 a6 15.d5 +=.

11.Nc3 Bg4 12.h3 Bh5 (12...Be6 13.Ne5 Be5 14.de5 Ng6 15.Qd8=; 12...Bf5 13.g3 Ng6 14.d5 Nce7 15.Qb3=; 12...Bd7 13.g3 Ng6 14.Bg2 Qf6 15.Nb5=) 13.Ne2 Nd5 14.Qb3 Rb8 15.Nd2 +=.

11.Nbd2 Be6 12.Rc1 Rb8 13.Qc2 Rc8 +=.

11.Ne5 Be5 12.de5 Qd1 (12...Ng6 13.Qd8 Rd8 14.f4 Be6 15.Nd2=) 13.Kd1 Ng6 14.f4 Bg4 15.Ke1 =.

11.g3 Nd5 12.Nbd2 a6 13.Bg2 b5 14.0–0 a5 (better is 14...Bg4!?=) 15.Qb3+/– Nb6 16.Qb5 Ne7 17.Ng5 c6 18.Qd3 (18.Bc6?! Nc6 19.Qc6 Ba6+=) 18...g6 19.Qc2 Ba6 20.Nge4 Bf1 21.Nf6 (21.Kf1?! Nbd5+=; 21.Rf1?! Nbd5+=; 21.Bf1?! Nbd5+=; 21.Nf1?! Nbd5+=) 21...Kf8 22.Rf1 Nf5 23.Ne8 Qe8 24.Qc6 Qc6 25.Bc6 Rc8 26.Rc1 Na4 (26...Ne7 27.Bb5 Rc1 28.Bc1 Ned5+–) 27.Ba4 Rb8 28.Rc2 h5 29.Ne4 Be7 30.d5 Bd8 31.Be5 Ra8 32.d6 1–0. rajagopal (2000) – jomunoz (1870), net–chess.com, 2011.

11.g3 Nh3 12.Bg2 Bg4 13.Nbd2 Qd7 14.Rc1 Bf8 15.Qb3 Na5 16.Qc3 Qd5 17.Qd3 (worse is 17.Qc7 Rac8 18.Ne5 Qg2 19.Qf7 Kh8–/+) 17...c5 18.Qb5 Nc6 19.Qb3 (19.Qb7 Rab8 20.Ne5 Qg2 (20...Rb7?! 21.Bd5 Ne5 22.Bb7 Nd3 23.Kf1–+) 21.Qf7 Kh8 22.Ng4 Qh1 (22...Rb2 23.Qe8 Qh1 24.Ke2 Rd2 25.Kd2+=) 23.Ke2 Nd4 24.Kd3 Qc6 25.Bd4 Qa6 26.Nc4 cd4 27.ed4 Ng5–+) 19...Qf5 20.d5 Na5 21.Qc3 b6 22.Kf1 Rac8 23.Re1 Qd5 24.Ne5 Qe6 Black plans c4 25.Ng4 Qg4 26.f4 Rcd8 27.Re2 c4! 28.Qc2 (28.Nc4 Rd1 Pinning) 28...h5 29.Nf3 Nb3 30.Ne5 Re5 31.Be5 Ba3 32.Bc6 Nc1 33.Rd2 Rd2 34.Qd2 Nd3 35.Bd4 Qe6 36.Bf3 Bc1 37.Qe2 Nhf2 38.Rg1 Ng4 39.Bg4 hg4 40.h3 gh3 41.Rh1 Nb4 42.Qh5 Nd5 43.Rh3 f6 (43...Ne3?? 44.Be3 Qh3 45.Qh3 Be3 46.Qc8 Kh7 47.Qc4+–) 44.Rh4 c3 45.f5 Qd7 46.Qh7 Kf8 47.Qg6 Kg8 ½–½. rajagopal (2000) – pcmvr, net–chess.com, 2011.

10.d4 Bf5

11.Qb3 b6 A) 12.Nc3 Nc6 (12...a5 13.Rd1 Nd7 14.Nb5 a4 15.Qc4=; 12...c6 13.Rd1 Nd7 14.Ne2 Nd5 15.Ng3=) 13.Nb5 Be4 14.Rc1 Bd5 15.Qd1+=; B) 12.Ne5 Be5 13.de5 Ng6 14.Qc3 Qe7 15.Nd2+=; C) 12.Nbd2 Nc6 (12...Be6 13.Qc2 Nd7 14.Ne5 Be5 15.de5=; 12...a5 13.Nc4 a4 14.Qd1 Be4 15.Rc1+=; 12...a6 13.Bc4 Qd7 14.Ng5 Bg6 15.0–0=; 12...Qd7 13.d5 c6 14.Qc3 f6 15.dc6=) 13.g3 Na5 14.Qb5 Bd7 15.Qa6+=; D) 12.g3 Be6 (12...Ne6 13.Bg2 c6 14.Nh4 Bg4 15.h3=; 12...Nh3 13.Nbd2 c6 14.d5 c5 15.Nc4=; 12...Ng6 13.Bg2 c6 14.0–0 Nd7 15.Rc1=) 13.Bc4 Bc4 14.Qc4 Nd5 15.0–0=.

11.Qb3 Nd7 A) 12.Nc3 Nb6 (12...Be6 13.Qc2 c6 14.g3 Bg4 15.Nd2+=) 13.Nb5 Be4 14.Rc1 Bd5 15.Qc2+=; B) 12.h3 a6 (12...Nb6 13.Nbd2 a5 14.Ne5 Be5 15.de5+=; 12...Qe7 13.Nc3 Nb6 14.Nb5 Rec8 15.Rc1+=; 12...Be6 13.Qc2 Qf6 14.Nbd2 Bf5 15.Qb3+=; 12...Qf6 13.Nbd2 Nb6 14.Ne5 Nfd5 15.Rc1+=; 12...Rb8 13.Nc3 Be6 14.Qc2 c6 15.g3+=; 12...Re7 13.Nbd2 Nb6 14.Ne5 Be5 15.de5+=) 13.g3 Nd5 14.Bg2 Be6 15.Qd3+=; C) 12.Nbd2 Nb6 (12...Be6 13.Qc2 Bd5 14.0–0–0 Ng6 15.e4+=) 13.Ne5 Be5 14.de5 Ng6 15.Nf3+=.

11.Qb3 Qe7 12.Ne5 Be5 13.de5 Ne6 14.Qb7 Nd7 15.Qf3 Rab8 16.Qf5 Rb2 17.Bd3 g6 18.Qe4 (18.Qh3 Nec5 19.0–0 Nd3 20.f4–+) 18...Nec5 19.Qd4 Ne5 (19...Nd3?! 20.Qd3 Nc5 21.Qd4–+) 20.Bc4 Rd8 21.0–0 (21.Qb2 Ned3 22.Bd3 Nd3 23.Ke2 Nb2 24.Nc3–+) 21...Rd4 22.ed4 Nc4 23.dc5 Qe5 24.a4 Ne3! 25.fe3 (25.fe3 Qe4 Double attack (25...Qe4 Decoy)) 25...Qd5 26.e4 Qg5 27.g3 (27.Rf2 Qc1 28.Rf1 Qc2 29.Nd2 Qd2 30.Rf2 Qf2 31.Kh1 Qg2) 27...Qe3 28.Kh1 Qe4 29.Kg1 (29.Rf3 Qf3 30.Kg1 Qg2) 29...Qg2 0–1. Jostov,Keylah – Jablonski,Czeslaw, OP–2011–0–01542, 2011.

11.Nc3 a6 12.g3 Ng6 (12...Nh3 13.Nh4 Bd7 14.Bd3 Ng5 15.0–0=) 13.Bg2 Nc6 14.0–0 Qd7 (14...Rb8 15.Re1=) 15.Re1 (15.Ng5=) 15...Na5 16.Qe2 Rac8 17.e4 c5 18.d5 (18.Rad1!? cd4 19.Rd4=) 18...Bg4+= 19.Qf1 Nb3 (19...b5 20.h3 Bf3 21.Bf3+=) 20.Rad1+= c4 (20...b5 21.h3 Bf3 22.Bf3+=) 21.h3= Bf3 22.Bf3 Ne5 23.Be2 Bc5 24.Kh2 Nd4 25.f4 Ne2 26.Qe2 (26.fe5 Nc3 27.Bc3 Ba3+=) 26...Nd3–/+ 27.Rd3 cd3 28.Qd3 b5 29.e5 b4 30.ab4 Bb4 31.d6 (31.Rd1 Red8+=) 31...a5 32.Re2 Bc3 33.Bc3 Rc5 34.f5 Qc6?? (better is 34...h6+=) 35.Bb2 (better is 35.d7 Rd8 36.e6 fe6 37.fe6+–) 35...Rd5+= 36.Qe4? (36.Qf3!? Qc4 37.Rg2+=) 36...f6 (better is 36...Rd6 37.Qg4 Rd1–+) 37.Rc2?? (better is 37.Qg4 fe5 38.f6–/+) 37...Rd2!!–+ 38.Rd2 Qe4 39.d7 Rd8 40.e6 Qb4 (40...Qe3 41.Rc2 Kf8 42.Bc1–+) 41.Re2 Kf8 (better is 41...Qb5 42.Rd2 Qc5–+ (42...Qf5?? 43.e7 Qd7 44.ed8R Qd8 45.Rd8 Kf7 46.Ra8+–)) 42.Bc3–/+ Qe7 (42...Qc3 43.e7) 43.Ba5 (better is 43.Ra2!?–/+) 43...Rd7–+ 44.Bb4 Rd6 (44...Qb4 45.ed7) 45.g4 (45.Ra2 g6 46.Ra8 Kg7 47.Ra6–+) 45...Ke8 46.Bd6 Qd6 47.Kg2 Qd3 48.Rf2 Ke7 49.Rf3 Qe4 50.Kf2 h5 (50...g6 51.Re3 Qc2 52.Re2 Qc5 53.Ke1 gf5 54.gf5 Qc3 55.Rd2 Qh3 56.Rf2–+) 51.Re3 (51.gh5 Qh4 52.Ke2 Qh5–+) 51...Qf4 52.Rf3 Qh2 53.Ke3 Qg1 54.Kf4 h4 (54...hg4 55.hg4 g5 56.fg6 Qh2 57.Ke3 Qh6 58.Rf4 Ke6 59.g7 Qg7 60.Re4 Kd5 61.Rd4 Kc5 62.Rf4–+) 55.Rd3 (55.Ke4 g6 56.fg6 Qb1 57.Kd4 Qg6–+) 55...Qf2 56.Ke4 Qe2 (better is 56...g6!? 57.Rd7 Ke8 58.Rd3 Qe2 59.Re3 Qc4 60.Kf3 Qd5 61.Ke2 gf5 62.gf5 Qb5 63.Ke1 Qf5 64.Ke2–+) 57.Re3 Qc2 58.Kf3 (58.Kd4 g6 59.fg6 Qd2 60.Ke4 Ke6 61.Kf3 Kd6–+) 58...g6 59.fg6 Qg6 60.Kf2 Qc2 61.Re2 Qd3 62.Re3 Qd2 63.Kf3 Qh2 64.Ke4 Ke6 65.Rf3 (65.Kd4 Kd6–+) 65...Qe5 (better is 65...Qe2!? 66.Re3 Qc4 67.Kf3 Kd5 68.Kf2–+) 66.Kd3 Qd5 67.Ke3 (67.Ke2 Qa2 68.Ke3 Qg2–+) 67...Qc4 (67...Qd1 68.Ke4 Qe2 69.Re3 Qc4 70.Kf3 Kd5 71.Kf2–+) 68.Kf2 Ke5 69.Re3 Kd4 70.Rf3 Qc2 71.Kf1 (71.Kg1 Qe2 72.Rf6 Qe1 73.Kg2 Qg3 74.Kf1 Qh3 75.Ke1 Qg3 76.Kd2 h3–+) 71...Ke4 72.Rf6 (72.Rf2 Qd3 73.Kg1 Qh3 74.Re2 Kf3 75.Rf2 Kg4 76.Rg2 Qg3–+) 72...Qh2 (72...Qd3 73.Kg2 Qg3 74.Kf1 Qh3 75.Kf2 Qe3 76.Kf1 Qc1 77.Kf2 Qb2 78.Kg1 Qf6 79.Kg2 Qf3 80.Kh2 h3 81.g5 Qg2) 73.g5 (73.Re6 Kf3 74.Rf6 Ke3 75.Re6 Kd2 76.Rf6 Qh3 77.Kg1 Qe3 78.Kf1 Qd3 79.Kg2 Qe4 80.Kf2 Qd4 81.Kf1 Qf6 82.Kg2 Qf4 83.Kh1 Qf3 84.Kh2 h3 85.g5 Qg2) 73...Qh3 74.Kg1 Qg3 75.Kf1 Qg5 76.Rf2 (76.Rf7 Qc1 77.Kf2 Qc5 78.Kg2 h3 79.Kh3 Qh5 80.Kg2 Qf7 81.Kg3 Qf3 82.Kh2 Qg4 83.Kh1 Kf3 84.Kh2 Qg2) 76...h3 77.Rh2 Qg3 (77...Qc1 78.Kf2 Qf4 79.Kg1 Qg3 80.Kf1 Qh2 81.Ke1 Ke3 82.Kf1 Qf2) 78.Re2–+ Kf3 (better is 78...Kd4–+) 79.Re3= Ke3 ½–½. Schiefelbusch,Dirk (2130) – Wagner,Mirco (1935), It (open) Dortmund (Germany), 2005.

11.Nc3 Qd7 12.d5 (12.g3; 12.Rc1; 12.Qb3) 12...h6 (12...c6 13.dc6 Nc6 14.Nb5 Rad8 15.Nd6=; 12...Bg4 13.h3 Bf5 14.g3 Ng6 15.Nd4=; 12...a5 13.g3 Nh3 14.Nd4 Be5 15.Be2=; 12...Re7 13.g3 Ng6 14.h3 Qd8 15.Rc1=; 12...a6 13.g3 Nh3 14.Nd4 Be5 15.Bg2=; 12...Kh8 13.g3 Ng6 14.Nd4 Bh3 15.Bh3=) 13.g3 Ng6 14.Nd4 Bh3 15.Qa4 =.

11.Nc3 Nd7 A) 12.Rc1 c6 13.g3 Ng6 14.d5 Qb6 15.Qd2+=; B) 12.Nb5 Bf8 (12...Be4 13.Nc3 Bg6 14.g3 Ne6 15.Nh4=) 13.Ne5 Nd5 14.Qf3 Be6 15.Nc3+=; C) 12.Qb3 Bg4 (12...Be6 13.Qc2 c6 14.g3 Bg4 15.Nd2+=; 12...Nb6 13.Nb5 Qe7 14.Ne5 Nfd5 15.Rc1+=; 12...b6 13.Nb5 Be4 14.Rc1 Nf6 15.Qc4+=; 12...Rb8 13.Nb5 Be4 14.Rc1 Nf6 15.Nd6+=) 13.Nb5 Bf8 14.h3 Be6 15.Qc2+=; D) 12.g3 Ng6 13.Nd2 c6 14.Qf3 Be6 15.Nde4+=.

11.Nc3 Qf6 12.g3 Nh3 13.Be2 Nd7 14.Kf1 Qe6 (14...c6 15.Ra2–/+) 15.Kg2 Nf6 16.d5 Qe7 17.Rf1 Ng4 18.Qd2 (18.Kh3?? Ne3 19.g4 Bg4) 18...Ng5 19.Qd4 Nf3 20.Bf3 Ne5 21.Be4 Bd7 22.a4 a6 23.a5 Rad8 24.Rfc1 Qf6 25.Ba3 Qh6 26.h4 Ba3 27.Ra3 c6 28.Rb1 Qh5 (better is 28...cd5!? 29.Bd5 Bc6=) 29.d6+/– (29.Rb7?! cd5 30.Nd5 Qg4+=) 29...Qg4 30.Kg1?? (better is 30.Rb7!? Qe6 31.Qc5+/–) 30...Bc8 (30...f5 31.Bg2 Qd4 32.ed4–/+) 31.Ra2 (31.Ra4 Nf3 32.Bf3 Qf3–/+) 31...Qe6 (31...f5 32.Bg2+=) 32.Rd1 f5 33.Bg2 Nf7 34.Rad2 Rd6 35.Qa4 Rd2 36.Rd2 Qe5 37.Ne2 Qb5 38.Qa1 Re5 39.Ra2 Rc5 40.Bf1 Qb4 (Exerts pressure on the isolated pawn) 41.Nd4 Rd5 (41...Ne5 42.Kg2–/+) 42.Ra4+= Qe7 43.Bc4 Rd6 44.Qb1 Rf6 45.Nf3 Kh8 46.Ba2 h6 47.h5 Nd6 (47...Ne5 48.Ne5 Qe5 49.Qb6+=) 48.Nh4= Qc7 49.Ng6 Kh7 50.Nf4 Rf8 51.Rd4 Ne4 52.Qb6 Qb6 53.ab6 Ng5 54.Kg2 Re8 55.Kf1 Ne6 (55...Nf3 56.Rd6 Ng5 57.Rd4=) 56.Be6+= Be6 57.Ne6 Re6 58.Rd7 Re4 59.Rb7 Rb4 60.Ke1 c5 61.Kd2 a5 62.Kc3 a4 63.Ra7 Rb3 64.Kc2 Rb6 65.Ra4 g5 66.Ra5 Rc6 67.Kd3 Rd6 68.Kc3 Rd5 69.f4 Rd1 70.Rc5 Rh1 71.Rf5 Rh5 72.fg5 Rh3 (72...hg5!? 73.e4 Kg6+=) 73.gh6+/– Rg3 74.Kd4 Kh6 ½–½. Buczinski,Henryk (2185) – Kireev,Sergey (2310), WC–2012–T–00005, 2010.

11.Ne5 Nd5 A) 12.Qb3 Be5 13.de5 Nb6 14.Nd2 N8d7 15.Nf3+=; B) 12.Qf3 Be5 (12...Be6 13.Bd3 Be5 14.de5 Nc6 15.Nd2=) 13.Qf5 Ne3 14.fe3 Bd4 15.Bd4+=; C) 12.Qh5 Be6 13.Nc3 Nf6 14.Qg5 c6 15.Be2+=.

11.Ne5 Be5 12.de5 Nd3 (12...Qd1 13.Kd1 Ng6 14.f4 Nc6 15.Nc3=) 13.Bd3 Bd3 14.Bd4 Bf5 15.0–0 +=.

11.Ne5 Ng6 A) 12.Qf3 Be5 (12...Qc8 13.Ng6 Be4 14.Qd1 Bg6 15.Nc3=) 13.de5 Qc8 14.Qg3 Qe6 15.Nd2+=; B) 12.Nc4 Nc6 (12...Be7 13.Qb3 b6 14.Be2 a6 15.Bf3=; 12...Bf8 13.Qb3 b6 14.Be2 Qg5 15.g3+=) 13.Qb3 Rb8 14.d5 Nce5 15.Nd6+=; C) 12.Ng6 Bg6 13.Nc3 c6 14.Bd3 Bd3 15.Qd3+=.

11.Nc3 c6

12.Qb3 Qc7 (12...b6 13.Rd1 Nd7 14.Ne2 Nd5 15.Ng3=; 12...Qe7 13.Ne5 Be5 14.de5 Ne6 15.Qd1+=; 12...b5 13.Ne5 Be5 14.de5 Re5 15.Rd1=; 12...Qd7 13.Rd1 Bg4 14.d5 Na6 15.dc6=; 12...Qc8 13.Rd1 Qc7 14.d5 Nd7 15.dc6+=) 13.g3 Nd3 14.Bd3 Bd3 15.Nh4 +=.

12.Rc1 Qe7 (12...Qa5 13.g3 Nd5 14.Qb3 b5 15.Nd2+=; 12...Nd7 13.g3 Ng6 14.d5 Qb6 15.Qd2+=; 12...Qb6 13.Qd2 Bd3 14.Bd3 Qb2 15.Bc2=; 12...Bg4 13.h3 Bh5 14.Qb3 b6 15.Nb1+=) 13.g3 Ng6 14.Qa4 a5 15.Be2 +=.

12.Ne5 Be5 13.de5 Qd1 14.Rd1+= Ng6 15.f4 Nd7 16.Be2 Nb6 17.0–0 Rad8 18.e4 Bc8 19.Rd6 Nf8 (19...f6!? 20.Rd8 Rd8 21.ef6 Rd2+=) 20.Rfd1+/– Ne6 21.g3 Kf8 (21...Rd7 22.a4+/–) 22.Bc1 Rd6 23.ed6 Nc5 24.e5 1–0. Marconi,Ralph P (2060) – Heyland,Phil, ICCF FM/1370, 2011.

12.Ne5 Be5 13.de5 Nd3 14.Bd3 Bd3 15.Ne2 +=.

12.g3 Ng6 (12...Nd5 13.Nd5 cd5 14.Nh4 Be6 15.Bd3+=; 12...Nh3 13.d5 cd5 14.Qd5 Be4 15.Qh5=) 13.d5 Ne5 14.Ne5 Be5 15.Bg2 +=.

12.h3 Qf6 (12...Qe7 13.Qb3 b5 14.d5 b4 15.Nd4+=; 12...Qa5 13.Qd2 Na6 14.Ne4 Qd2 15.Ned2=; 12...Qb6 13.Qd2 Qa5 14.g4 Bg6 15.Nh4+=; 12...Nd7 13.g3 Nd5 14.Nd5 cd5 15.Bg2+=) 13.Qb3 Nd7 14.0–0–0 Nd5 15.Be2 –/+.

11.Nc3 Nc6

12.Qb3 a6 (12...Bg4 13.Qb7 Bf3 14.gf3 Nd4 15.0–0–0=; 12...Rb8 13.Nb5 Be6 14.Qa4 Qf6 15.Kd2+=; 12...Qd7 13.Rd1 Bg4 14.Ne2 Be6 15.Qc2+=; 12...Bd3 13.0–0–0 Bf1 14.Rhf1 Ng2 15.Qb7=; 12...b6; 12...Qc8) 13.0–0–0 Qd7 14.ef4 Bf4 15.Nd2 –+.

12.Nb5 a6 (12...Rc8 13.Rc1 a6 14.Nd6 cd6 15.Nd2+=; 12...Be7 13.Ne5 Ne5 14.de5 Nd5 15.Qf3=; 12...Be4 13.Rc1 a6 14.Nc3 Bf5 15.g3+=; 12...Rb8 13.Nd6 Qd6 14.g3 Nd5 15.Bg2+=; 12...Qe7 13.Nd6 Qd6 14.Ne5 Ne5 15.de5+=; 12...Bf8 13.Ne5 Ne5 14.de5 Nd5 15.Qf3=) 13.Nd6 cd6 14.Nd2 Bd3 15.Qf3 +=.

12.Rc1 Qf6 (12...Bg4 13.h3 Bh5 14.Nb5 Bf8 15.g4+=; 12...Rb8 13.g3 Ng6 14.Nb5 Be4 15.Bg2=; 12...Qd7 13.g3 Ng6 14.Nb5 Be4 15.Be2=; 12...Rc8 13.g3 Ng6 14.Bg2 Qf6 15.0–0=; 12...Qe7 13.g3 Ng6 14.Nb5 Rad8 15.Nd6+=; 12...a6 13.g3 Ng6 14.Bg2 Qe7 15.Qb3=) 13.d5 Ne5 14.Ne5 Be5 15.g3 +=.

12.g3 Ng6 13.Bg2 Qf6 14.Qb3 Rab8 15.0–0 =.

12.g3 Ng6 13.Bg2 h5 14.Nb5 a6 15.Nd6 Qd6 16.Ng5 Bg4 17.Qb3 Nd8 18.0–0 (18.0–0 h4 A) 19.Bb7 Rb8–+ (19...Nb7?! 20.Qf7 Kh8 21.Qe8 Re8 22.Nf7 Kg8 23.Nd6 cd6 24.Rfc1=); B) 19.Rab1+=; 18.Bb7 Rb8 (18...Nb7 19.Qb7 Rab8 20.Ne4 Rb7 21.Nd6 cd6 22.Rb1–+) 19.Nf7 Nf7–+). Kozlowski – Zamarski, corr 1. AMM Poland, 1991.

12.g3 Nh3 13.Nb5 Qf6 14.Nd6 cd6 15.Be2 +=.

12.g3 Nh3 13.Nb5 Bf8 14.d5 Na5 15.Bc3 c6 (better is 15...c5 16.d6 Qb6=) 16.Nbd4+/– Bg4 17.Qa4 Qd5 18.Bh3 Bh3 19.Qa5 (worse is 19.Ba5 Bg4–/+) 19...c5 20.Rg1 (20.0–0–0 Bg4 21.Nd2 Bd1 22.Rd1 b6–/+) 20...b6 21.Qb5 Rad8 22.Nc6 Bd7 23.Nfe5 Re5 24.Be5 (24.Ne5 Bb5) 24...Bc6 25.Qb2 Qf3 26.Qe2 Qe4 27.Bb2 c4 28.Bd4 b5 29.Qb2 a6 30.Qc3 Bd7 ½–½. Kuperski,Marek – Pegiel,Marek, corr 2AMM Poland, 1994.

12.g3 Nh3 13.Be2 Qf6 14.Rf1 Bg4 15.Nb5 Rad8 16.Rb1 Bf5 17.Rc1 a6 18.Nd6 Rd6 19.Nh4 Be6 20.Qc2 Bd5 21.Nf5 (21.Qf5!? Ng5 22.Qf6 Rf6 23.Bd3=) 21...Rde6+= 22.Bg4 Ng5 23.h4 Ne4 24.Qe2 h5 (24...Qd8!?+=) 25.Ng7= Kg7 26.Be6 Qe6 (26...Be6? 27.d5 (27.Qh5 Bh3 28.Rc2 Bf1 29.Qg4 Kf8–/+) 27...Ne5 28.de6 Re6 29.Rc2+– (29.Rc7 Rb6 30.Rf7 Kf7 31.Qh5 Ke6 32.Qe8 Kd5 33.Be5 Qe5 34.Qd8 Rd6–+); worse is 26...fe6 27.f3 Nd6 28.e4+=) 27.Qh5 Kf8 28.Qh8 Ke7 29.Qh5 Bc4 30.Rg1 Kd7 31.d5 Bd5 32.Rd1 f5 33.Rg2 Ne5 34.Be5 Qe5 35.Qf7 (35.Rd3!?+=) 35...Kd6–/+ 36.Rd5 (36.Qh5!?–/+) 36...Qd5–+ 37.Qd5 Kd5 38.g4 Rh8 39.f3 Nd6 (39...Rh4?! 40.fe4 fe4 41.Kd2–/+) 40.Rd2 Ke6 41.h5 fg4 42.fg4 Nc4 43.Rc2 b5 (43...Ne3?! 44.Re2 Ke5 45.Re3 Kf4 46.Re7=) 44.a4 Rg8 (44...Ne3?! 45.Re2=) 45.ab5 ab5 46.Rg2 Kf6 (46...Ne3?! 47.Re2 Rg4 48.Re3 Kd5 49.Rd3 Kc4 50.Rh3–/+) 47.Rf2 Ke6 48.Rg2 b4 (48...Ne3?! 49.Re2 Rg4 50.Re3 Kd5 51.Rd3 Kc4 52.Rh3–/+) 49.Ke2 (49.Ra2 Rg4 (49...Ne3?! 50.Re2–+) 50.Ra6 Kd5–+) 49...b3 50.Rg1 Na3 51.g5 b2 52.g6 b1Q 53.Rb1 Nb1 54.Kd3 Kf6 55.Kc2 Na3 (55...Rb8 56.Kc1–+) 56.Kb3 Nb5 57.Kc4 Nd6 58.Kd5 Rh8 0–1. Rajala,Olavi (1860) – Laine,Jari (1860), Serveri, 2007.

10.d4 Bg4

11.Qc2 A) 11...Nd7 12.Nbd2 (12.Nfd2 Rc8 13.g3 Nd5 14.Bd3 N5f6+=) 12...Rc8 13.h3 Bh5 14.g3 Nd5+=; B) 11...Nc6 12.Nbd2 Qe7 13.h3 Bh5 14.g3 Nd5=; C) 11...Bf3 12.gf3 Qh4 13.Qb3 c5 14.Rg1 cd4+=.

11.Nc3 A) 11...a6 12.h3 (12.g3 Nh3 13.Be2 Qf6 14.Rc1 Nc6+=; 12.Ne2 Ng6 13.Rb1 Nd7 14.d5 Bf3+=; 12.Qc2 Nc6 13.Ne2 Ng6 14.d5 Bf3+=; 12.Rc1 Nc6 13.Ne2 Nd5 14.Nc3 Nc3+=; 12.Qb3 Nd7 13.Ne2 Be6 14.Qc2 Ng6+=; 12.Rb1 Nc6 13.Ne2 Nd5 14.Ng3 Qd7+=) 12...Bf5 13.g3 Ng6 14.Qb3 Ra7+=; B) 11...c6 12.Qb3 (12.h3 Bf5 13.g3 Nd5 14.Rc1 Be6+=; 12.g3 Nd5 13.Nd5 cd5 14.Bg2 Qf6+=; 12.Rc1 Qe7 13.Qb3 Be6 14.Qa4 Nd7+=; 12.Qc2 Nd7 13.Ne2 Ng6 14.Ng3 Nf6+=) 12...b6 13.Ne2 Be6 14.Qc2 Ng6=; C) 11...Nd7 12.h3 (12.g3 Nh3 13.Be2 c6 14.d5 Qf6+=; 12.Rc1 c6 13.h3 Bf3 14.Qf3 Qa5+=; 12.Nb5 Bf8 13.h3 Bf5 14.Ne5 Nd5+=; 12.Qb3 Be6 13.Qc2 a6 14.g3 Bg4+=; 12.Qb1 c5 13.Nb5 Bb8 14.dc5 Nc5–/+) 12...Bh5 13.g3 Ne6 14.Bg2 Nb6=; D) 11...Qd7 12.h3 (12.Rc1 c6 13.Qc2 Bf5 14.e4 Qe7+=; 12.g3 Qc6 13.gf4 Qf3 14.Qf3 Bf3+=; 12.Rb1 Nc6 13.Ba1 Rab8 14.Bb2 a6+=) 12...Bf5 13.d5 a6 14.g3 Nh3=; E) 11...Nc6 12.Rc1 (12.Nb5 Bf8 13.Rc1 a6 14.Nc3 Bf3–/+; 12.h3 Bh5 13.Ne2 Nd5 14.Qb3 Nb6+=; 12.Ne2 Nd5 13.Nc3 Be6 14.Qc2 Nf4+=) 12...a6 13.Ne2 Nd5 14.Nc3 Nc3+=.

11.Nbd2 a5 12.Rc1 Na6 13.Nc4 Qe7 14.Qc2 Bf3 =.

11.Nbd2 a6 12.g3 (12.Rc1 Nc6 13.Nc4 Rb8 14.h3 Bh5+=; 12.Nc4 Nc6 13.Rc1 Rc8 14.Qa4 Qd7+=; 12.Rb1 Nc6 13.Qc2 Qd7 14.g3 Bf5=; 12.h3 Be6 13.Ne4 Bd5 14.Nc3 Bc6+=; 12.Qc2 Nd7 13.g3 Nd5 14.Bd3 h6=; 12.e4 Nc6 13.g3 Ng6 14.Qb3 Rb8+=) 12...Ng6 13.Bg2 Nc6 14.Nc4 b5 =.

11.Nbd2 c6 12.h3 (12.Qc2 Nd7 13.Nc4 Bc7 14.Nfe5 Ne5+=; 12.Rc1 Nd7 13.Nc4 Bc7 14.Qc2 Bf3+=; 12.Nc4 Bc7 13.Rc1 Nd7 14.Qc2 Bf3+=; 12.Qb3 b5 13.a4 Be6 14.Qc2 Qd7+=; 12.Rb1 Bf5 13.Rc1 Nd7 14.Qb3 Rb8+=; 12.g3 Nd5 13.Bd3 Qe7 14.Nc4 Bc7+=) 12...Bf5 (12...Be6 13.Qc1 Bd5 14.g3 Ng6+=) 13.Qb3 (13.Nc4 Be4 14.Qb3 Re7+=) 13...Qb6 (13...b5 14.Ne5 Be5 15.de5=) 14.0–0–0 (14.Qb6 ab6 15.Nc4 Bc7=) 14...Qb3 (14...Nd5 15.Qb6 ab6 16.Ne5+=) 15.Nb3 Nd5 16.g4 Bc8 17.Bg2 Nd7 18.Rhe1 N7b6 19.e4 Nf4 20.Bf1 Na4 21.Nh4 g6 22.Kc2 (22.Nf3 Be6 23.Kc2 Nb2 24.Kb2 Rad8=) 22...Nb2 (22...h5 23.Bc1 hg4 24.hg4 Bg4 25.f3+=) 23.Kb2 b6 (23...h5 24.gh5 gh5 25.Re3+=) 24.e5 (24.Rc1 Bd7=) 24...Be7+= 25.Nf3 a5 26.Re4 Nd5 27.Nfd2 a4 28.Nc1 b5 29.Nd3 b4 30.Rc1 ba3 31.Ka1 Ba6 32.Nc5 Bf1 33.Nf1 (worse is 33.Rf1 Nc3 34.Re3 Nb5–/+) 33...Reb8 34.Ne3 Bg5 34...Rb3 35.e6 Bc5 36.dc5 fe6 37.Re6 Nb4–/+) 35.Rc2? (35.e6 Rb2 36.ef7 Kf7+=) 35...Be3 (better is 35...Rb2!? 36.Rb2 ab2 37.Kb2 Rb8 38.Ka3 Nc3–+) 36.fe3+= Rb2 (36...Rb2 37.Rc1 Nb4–+) 0–1. Lanca,Ivan (2280) – Dostal,Jaroslav (2240), corr Moravia–ch8, 1998.

11.Nbd2 Nc6 12.Nc4 Rb8 13.Rc1 b5 14.Nce5 Be5 +=.

11.Nbd2 Nd7 12.Nc4 (12.Rc1 c6 13.Nc4 Bc7 14.Qc2 Bf3+=; 12.h3 Be6 13.Ne5 Be5 14.de5 Ng6+=; 12.Qc2 Rc8 13.h3 Bh5 14.g3 Nd5+=) 12...Rc8 13.Rc1 Qe7 14.Nd6 cd6 +=.

11.Nbd2 Be6 12.Rc1 (12.Ne5 Be5 13.de5 Nd3 14.Bd3 Qd3+=; 12.Ne4 Nc6 13.Rc1 Bd5 14.Nc3 Bf3=; 12.Qc2 Nc6 13.Ne5 Be5 14.de5 Ng6=; 12.g3; 12.Rb1) 12...Bd5 13.g3 Ng6 14.Bc4 Bc4 =.

11.Nbd2 Qe7 12.Qc2 (12.h3 Bd7 13.Nc4 Bc6 14.Nd6 Qd6=; 12.Rc1 Ba3 13.Ba3 Qa3 14.Nc4 Qb4–/+; 12.Qb3 Nd7 13.g3 Nh3 14.Rb1 Rab8+=; 12.Rb1 Nd7 13.Qc2 Rad8 14.Nc4 Bf3+=; 12.Nc4 Nd7 13.h3 Be6 14.Nd6 Qd6+=) 12...Nc6 13.h3 Be6 14.Kd1 Ng6 +=.

11.Nbd2 Qf6 12.g3 (12.Qb3 Nd7=) 12...Nh3 (12...Nd5 13.Be2+=) 13.Bg2 Nd7 14.Qc2 (14.Rc1 Rad8+=) 14...Rad8 (14...Bf5 15.Qb3+=) 15.Rc1 (15.Ne4 Qh6=) 15...c6 (15...Bf5 16.e4+=) 16.Ne4 (16.d5 Qe7=) 16...Qe7 The isolani on a3 becomes a target 17.Nd6 Qd6 18.Bh3 (18.Nd2!?=) 18...Bh3+= 19.Ng5 Qd5 (better is 19...Qh6!? 20.Nh3 Qh3+=) 20.Qh7+= Kf8 21.Rg1 (21.Kd2 Qg5 22.Qh3 Nf6=) 21...Bf5 (21...Qg5 22.Qh8 (22.Qh3? Re3 23.Kd1 Rd3 24.Kc2 Rd2 25.Kb1 Kg8–+) 22...Ke7 23.Qh3 Qa5 24.Kd1=) 22.Qh8+= Ke7 23.Qg7 Rg8 24.Qf7 Qf7 25.Nf7 Kf7 26.f3 Bh3 (26...Nb6 27.h4=) 27.Rc2 (27.g4 Rg5+=) 27...Nb6 (27...Rde8 28.e4+=) 28.Kf2 Na4 (28...Be6 29.h4+=) 29.g4+= Nb2 (29...Rd6 30.e4+=) 30.Rb2 b5 (30...b6 31.Rg3 Rh8 32.f4+=) 31.a4 (31.Rg3 Rh8+/–) 31...ba4 (31...a6 32.Kg3 Rh8 33.a5+=) 32.Ra2 (32.Kg3 Rde8 33.Rb7 Kf6 34.Kh3 Re3+–) 32...Rd4?? (better is 32...Rg7+=) 33.ed4+– (33.ed4 Rh8 34.Ra4+–) 1–0. Weber,Krzysztof – Sternik,Ryszard, corr 2AMM Poland, 1993.

11.h3 Bd7 12.Ne5 Be5 13.de5 Ng6 14.Bd3 Bc6 +=.

11.h3 Be6 12.Nbd2 (12.Nc3 c6 13.Ne5 Nd5 14.Bd3 Nd7=; 12.Qc2 Nc6 13.Ne5 Be5 14.de5 Ng6+=; 12.Qd2 Bf5 13.Ne5 Ng6 14.Nc4 Bf8+=; 12.Qc1 Bf5 13.Ne5 Be5 14.de5 Nd3–/+; 12.Ne5 Nd5 13.Qf3 c6 14.e4 f6+=; 12.g3 Nd5 13.Bd3 Nc6 14.Qc2 h6+=) 12...Nc6 13.Qc2 Qd7 14.Kd1 Bf5 =.

11.h3 Bf5

12.Qb3 b6 13.g3 Be6 14.Bc4 Nd5 +=.

12.Nc3 c6 13.Qb3 b5 14.Rd1 +=.

12.Nc3 c6 13.Ne2?? Nd3–+ 14.Kd2 Nf2 15.Qe1 (15.Qb3 Nh1 16.Qb7 Nd7 17.Qc6 Qe7–+) 15...Nh1 16.g4 Bg6 17.Bg2 Qb6 18.Bc3 Qa6 19.Ne5 Be5 20.e4 Bf6 21.Qh1 Bg5 22.Ke1 Qd3 23.e5 Qc2 24.Bf3 Bd3 25.Ba5 b6 0–1. rajagopal (2000) – pierred (2760), net–chess.com, 2011.

12.Nc3 c6 13.g3 Nd5 14.Rc1 Be6 +=.

12.Nbd2 Nc6 13.Nc4 Be4 14.Rc1 a6 +=.

12.Ne5 Be5 13.de5 Nd3 14.Bd3 Bd3 +=.

9.a3! Bf8

10.Qa4 Ne6 11.d4 a6 12.Be2 c5 13.0–0 cd4 14.Nd4 Nd4 15.Qd4 Nc6 16.Qd8 Rd8 17.Bf3 Be6 18.Nc3 (18.Rd1 Rd1 19.Bd1 Rd8–/+) 18...Rd2 (18...Ne5!?–/+) 19.Rab1= Na5 20.Ne4 Rd7 (20...Rc2 21.Bc3 Nc4 22.a4+=) 21.a4 (21.Ng5 Nc4=) 21...Rad8+= 22.Bd4 Nc4 (22...Bf5 23.g4 Bg6 24.Bb6=) 23.Rfc1= h6 24.Be2 Bf5 25.Rc4 Be4 26.Rb6 Bd6 27.f3 Bc6 28.Kf2 Be7 (28...Bd5 29.Rc2=) 29.g3 (29.Rbc6 bc6 30.Rc6 a5+=) 29...Rd5 30.h4 R8d7 31.f4 Ra5 Exerts pressure on the isolated pawn 32.Bd1 (32.Bf3 Bf3 33.Kf3 Kh7=) 32...Bc5 (32...Bd8 33.Rb2=) 33.Rc6+= (worse is 33.Bc5 Rd1 34.e4 Ra1+=; worse is 33.Rc5 Rc5 34.Bc5 Rd1+=) 33...bc6 34.Bg4 Rd4 35.ed4 (35.Rd4? Bd4 36.ed4 Ra4–+) 35...Ba7 (35...Be7+/–) 36.Bd7 (36.Ke3!?+/–) 36...Rd5= Attacks the isolani on d4 37.Bc6 Rd4 38.Rd4 Bd4 39.Kf3 a5 (39...h5 40.f5=) 40.g4 g6 ½–½. Schiefelbusch,Dirk (2130) – Buckels,Valentin (1975), Dortmund GER, Sparkassen Open, 2013.

10.Qc2 b6 11.Be5= Ne6 (11...Nd5 12.Bd3 g6 13.Be4+=) 12.Bd3+= g6 13.Be4 Nc5 (better is 13...c6!? 14.Bb8 Rb8 15.Bc6 Bd7 16.Bd7 Qd7+/–) 14.Ba8+/– Nd3 15.Kf1 Ba6 16.Kg1 (16.Bc7 Nb4 17.Kg1 Nc2 18.Bd8 Na1+=) 16...Ne5 17.Ne5 Re5 18.Bf3 (18.Be4 f5 19.Qb3 Kh8+=) 18...Bd3+= 19.Qd1 Bb1 (19...c5!?+=) 20.Rb1 Ba3 21.d4 Ra5 22.h4 h6 (22...h5 23.Rh3+/–) 23.h5+– g5 24.Be4 (24.Ra1 Qd6+–) 24...Bd6 25.g3 (25.d5 Qf6+/–) 25...f5 (25...Qf6 26.d5+/–) 26.Bd3 Qf6 Black prepares f4 27.Ra1 White gets deadly initiative 27...Nc6 (27...Ra1 28.Qa1 a5 29.Qa4+/–) 28.Ra5 Na5 29.Qf3 f4 30.gf4 gf4 31.Rh2 Kf7 32.Rg2 fe3 33.Qe4 e2 (33...Qf4 34.Qd5 Ke8 35.Qe6 Kd8 36.fe3+–) 34.Rg6 (34.Rg6 e1Q 35.Qe1+–) 1–0. Buczinski,Henryk – Ozimek,Piotr, corr Poland, 1994.

10.Qc2 Nc6+= 11.d4 (11.Nc3 Bg4+=) 11...Qd5 12.Nbd2 Bf5 13.Qc3 Rad8 (13...Qe6 14.Nc4+=) 14.Bc4 (14.g3 Ng6+=) 14...Ng2 15.Kf1 Qd7 16.Rg1 (16.Ng5 Bg6 17.h4 Qg4=) 16...Bh3 (better is 16...Nf4!+=) 17.Rg2+= Qg4 18.Ne1 Nd4 (worse is 18...Bg2 19.Ng2 Re7 20.Kg1+=) 19.Kg1 (19.Qd4 Rd4) 19...Bg2–/+ 20.Ng2 Ne2 21.Be2 Qe2 22.Nf1 Rd3 (22...c5 23.Ng3 Qd2 24.Rb1–/+) 23.Re1 Rc3 24.Re2 Rb3 25.Rc2 Ba3 26.Ba3 Ra3 27.Rc7 Rb8 28.Nf4 (28.Nh4 a5–/+) 28...b5 29.Nd5 a5 30.Ne7 (30.e4 b4–/+) 30...Kf8 31.Ra7 (31.Nc6 Rc3–+) 31...Rc3 (31...b4 32.Nc6 Rc8 33.Ne5–+) 32.Nf5 (32.Nd5 Rd3 33.e4 b4–+) 32...b4–+ 33.Nd6 (33.Kg2 b3 34.Nd2 Rd3+=) 33...b3 34.Nd2 b2 35.Ra5 (35.Rf7 Kg8 36.Ra7 Rc2–+) 35...Rc2 36.N6e4 Rd8 37.Kg2 Rdd2 38.Nd2 Rd2 39.Rb5 Ke7 40.Kf3 (40.e4 Kd6–+) 40...Kd6 (40...f5 41.h4–+) 41.e4 Kc6 42.Rb8 Kc5 43.Ke3 Rc2 44.h4 Kc4 (44...Kc4 45.Kf4 Rf2 46.Ke3 Rh2–+) 0–1. Buczinski,Henryk – Skonieczny,Jerzy, corr 2AMM Poland, 1994.

10.Qc2 g6 11.Qc3+/– The mate threat is Qh8 11...f6 12.Qf6 The passed pawn on e3 quickly leads to threats 12...Qf6 13.Bf6 Bg7 (13...Nc6!?+/–) 14.Bg7 Kg7 15.d4 Bf5 (15...Nc6 16.Nbd2+/–) 16.Nc3+– c6 (16...Nd7 17.Nb5 Nd5 18.Rc1+–) 17.Ne5 Nd5 18.Nd5 cd5 19.Rc1 Rc8 20.Rc8 Bc8 21.Bb5 a6 22.Ba4 b5 (22...Be6 23.Kd2+–) 23.Bb3 Bb7 (23...Be6 24.e4!+–) 24.Ke2 (24.Ke2 a5 25.Rc1+–; 24.Kd2 a5+–) 1–0. Buczinski,Henryk – Dziel,Jaromir, corr 2AMM Poland, 1993.

10.d4 Nc6 A) 11.g3 Ng6 (11...Nd5 12.Bg2 Bf5 13.0–0 Be4 14.Nbd2=)12.Bg2 Qf6 13.Qb3 Be6 14.Qb5+=; B) 11.Ne5 Ne5 12.de5 Qd1 13.Kd1 Ng6 14.Nd2+=; C) 11.Nc3 Bg4 (11...Be6 12.Ne2 Ne2 13.Be2 Bd5 14.Bd3=; 11...Bd6 12.g3 Nh3 13.d5 Ne5 14.Ne5+=) 12.h3 Bh513.Ne2 Nd5 14.Nc3+=; D) 11.Qb3 Bg4 (11...a5 12.Bc4 Be6 13.Be6 Re6 14.0–0=; 11...Re7 12.Nbd2 Rb8 13.Ne5 Ne5 14.de5+=; 11...Bd612.Nbd2 Rb8 13.d5 Ne5 14.Ne5+=; 11...a6 12.Bc4 Ng213.Kf1 Qf6 14.Bf7=; 11...Qd7 12.g3 Ng6 13.Bg2 Qd614.d5=; 11...Rb8 12.Bc4 Re6 13.Be6 Be6 14.Qc2+=) 12.Ne5 Ne5 13.de5 Ne6 14.Bc4+=; E) 11.Nbd2 Rb8 (11...Be6 12.Qc2 Qd5 13.Kd1 Bf5 14.Qb3=; 11...Bg4 12.Rc1 a6 13.Qc2 Bd6 14.g3=; 11...a6 12.g3 Ng6 13.Bg2 Be6 14.0–0=; 11...Bf5 12.Qb3 Rb813.Ne5 Ne5 14.de5+=) 12.g3 Ne6 13.Bb5 a6 14.Ba4+=; F) 11.Qa4 a6 (11...Bd6 12.g3 Nd5 13.Bg2 Be6 14.0–0+=) 12.g3 Nd5 13.Bg2 Bf5 14.0–0+=; G) 11.Qc2 Bd6 (11...Qd5 12.Nbd2 Bf5 13.Qb3 Rad8 14.Bc4=; 11...h6 12.Nbd2 Be6 13.Ne5 Ne5 14.de5=; 11...Be6 12.Nc3 Bd6 13.Rd1 Bg4 14.Ne4=) 12.g3 Ng6 13.Bd3 Bh3 14.Nbd2=.

10.d4 Bd6 A) 11.Nc3 Nc6 (11...Bg4 12.h3 Be6 13.Ne5 Nd5 14.Bd3=; 11...Be6 12.Rc1 Nd7 13.Nb5 Bd5 14.Nc3=; 11...Qd712.Ne5 Be5 13.de5 Re5 14.Qd7=; 11...Nd7 12.Nb5 Bf813.Ne5 Ne6 14.d5+=; 11...Re7 12.Qc2 Nc6 13.Ne4 Qe814.Nfd2=; 11...Qf6 12.g3 Nh3 13.Nb5 Bg4 14.Be2=) 12.Nb5 Bg4 13.h3 Bh5 14.Nd6+=; B) 11.Ne5 Ne6 (11...Be5 12.de5 Qd1 13.Kd1 Ng6 14.f4=;11...Nd5 12.Bd3 Be6 13.0–0 Nd7 14.Nc4=) 12.Qc2 c513.Bb5 Nd7 14.Nc4+=.

10.d4 Nd7 A) 11.Nc3 c6 (11...a6 12.g3 Ng6 13.Bg2 Nb6 14.0–0=;11...Bd6 12.Nb5 Be7 13.Ne5 Ne5 14.de5=; 11...Rb812.Qb3 b5 13.Qc2 a6 14.Ne2=; 11...h6 12.Rc1 c6 13.g3Ng6 14.d5=; 11...Qe7 12.d5 c6 13.dc6 bc6 14.Qd4=; 11...b6 12.Ne5 Ne5 13.de5 Qd1 14.Rd1=) 12.Qc2 Qa5 13.g3 Ng6 14.Bg2=; B) 11.Nbd2 a6 (11...b6 12.Qb3 Bb7 13.Bc4 Ng2 14.Kf1=; 11...c6 12.Qc2 Qa5 13.g3 Ng6 14.Bc3=; 11...Rb812.Rc1 c6 13.Nc4 f6 14.Qc2=; 11...Re6 12.Nc4 c6 13.Qc2h6 14.Nfe5=; 11...Bd6 12.Nc4 Nb6 13.Nce5 Ng6 14.Bd3=; 11...c5 12.Qc2 cd4 13.Bd4 Bd6 14.Ne4=)12.Qc2 b5 13.Rc1 c5 14.a4+=; C) 11.Qc2 c6 (11...Bd6 12.Nbd2 a6 13.Ne4 Nf6 14.Nd6=;11...a6 12.Nc3 b5 13.Ne2 Ng6 14.Ng3+=; 11...Rb8 12.Nbd2c6 13.g3 Ng6 14.Bd3=; 11...c5 12.g3 Ng6 13.Bd3 b614.Be4=; 11...b6 12.Nc3 Bb7 13.Nb5 c6 14.Qf5=; 11...Re7 12.Nc3 c6 13.Ne4 Nb6 14.ef4=) 12.Nc3Qa5 13.g3 Ng6 14.Bg2+=; D) 11.g3 Nd5 (11...Ng6 12.Bg2 Nf6 13.0–0 c6 14.Qc2=; 11...Ne6 12.Bd3 Be7 13.0–0 Nf6 14.Nc3=) 12.Qc2 Bd613.Bd3 N7f6 14.0–0=; E) 11.Qb3 a6 (11...Re7 12.g3 Ng6 13.Nc3 Nb6 14.Rd1=;11...Re6 12.Nc3 Bd6 13.Kd1 Ng6 14.Bc4=; 11...a5 12.Bc4Ne6 13.0–0 Bd6 14.Qc2+=; 11...Nb6 12.Ne5 Be6 13.Qc2 Ng614.Bd3=; 11...Bd6 12.Bc4 Ne6 13.0–0 Nb6 14.Bd3=; 11...Qe7 12.Nc3 c6 13.Rd1 Nf6 14.Ne5=) 12.g3Ng6 13.Bg2 Nb6 14.0–0=.

10.Ne5 Nd5= A) 11.Bc4 c6 12.d4 Nd7 13.Nc3 Ne5 14.de5+=; B) 11.Qb3 c6 12.Bc4 Nd7 13.Nd7 Qd7 14.Bd5=; C) 11.Qc2 Nd7 (11...f6 12.Nf3 Kh8 13.Nc3 Bg4 14.Be2=) 12.Nd7 Bd7 13.Bd3 Qh4 14.Nc3+=; D) 11.Qf3 f6 12.e4 Nb6 13.Nc4 Na4 14.Nc3+=; E) 11.Qh5 Be6 12.Bc4 Nf4 13.Be6 Nh5 14.Nf7=.

10.Ne5 Ne6 A) 11.Bc4 Nd7 (11...f6 12.Nf3 Nd7 13.d4 Nb6 14.Bb3=; 11...Bd6 12.Qh5 Be5 13.Qe5 Nd7 14.Qg3=; 11...a6 12.Qh5 f6 13.Ng4 Be7 14.d4=) 12.0–0 Bd6 13.d4 Qf6 14.f4=; B) 11.Bd3 Qe7 (11...h6 12.Qh5 g6 13.Bg6 fg6 14.Qg6=; 11...Qh4 12.Qf3 f6 13.g3 Qa4 14.Nc3+–; 11...Qg5 12.Qf3 Nd8 13.Qg3 Qg3 14.hg3=) 12.Qc2 Qh4 13.0–0 Bd6 14.f4=.

10.Ne5= Qg5 11.ef4+= Qf4 12.d4 f6 13.Bd3 Qh4 (13...fe5 14.Bh7 Kh7 15.Qh5 Kg8 16.Qe8 Qe4 17.Kd2 Qf4 18.Ke1 Qe4 19.Kd2 Qf4 20.Ke2 Qe4 21.Kd2=) 14.Qb3 Kh8 15.g3 Qh3 16.Qf7 Qd7 17.Qf8 Rf8 18.Nd7 (18.Nd7 Bd7 19.Nc3+–) 1–0. Kuperski,Marek – Kossobudzki,Robert, corr 2AMM Poland, 1993.

10.Qa4 Nd5

11.Qb3 A) 11...a5 12.Qc2 (12.Bc4 a4 13.Qc2 Bg4 14.Bd3 h6=; 12.d4 Bd6 13.Nbd2 c6 14.Qc2 h6=; 12.Nc3 Nf4 13.Bc4 Nd3 14.Kf1 Be6+=; 12.Be2 a4 13.Qc2 Bg4 14.Nc3 Nc3=; 12.Bb5 c6 13.Be2 b5 14.Qc2 Bd6=) 12...Bg4 13.Bd3 h6 14.Bh7 Kh8 15.Be4=; B) 11...Nb6 12.Qc2 (12.d4 Bf5 13.Bd3 Bd3 14.Qd3 c5=; 12.Bd3 h6 13.Qc2 N8d7 14.0–0 Nf6=) 12...h6 13.Bd3 N8d7 14.0–0 Nf6=; C) 11...Re6 12.Bc4 Rb6 13.Qc2 Nc6 14.d3 Be6=; D) 11...Re7 12.d4 (12.Bc4 Nb6 13.Bd3 h6 14.Qc2 Bd7=) 12...Nc6 13.Nc3 Nb6 14.d5 Ne5=; E) 11...Nc6 12.d4 (12.Be2 a6 13.Qc2 Be6 14.Nc3 Qd7=; 12.Bb5 Bf5 13.Nc3 Nf4 14.0–0 Nd3=) 12...Rb8 13.Bb5 Be6 14.Qc2 Qf6=.

11.Qc2 A) 11...Bd6 12.Nc3 (12.Bd3 Nf6 13.Nc3 Nbd7 14.Nb5 Nc5=; 12.Bc4 Nb6 13.Bd3 h6 14.0–0 N8d7=; 12.d4 Nf4 13.Nbd2 Nc6 14.Nc4 Bg4=) 12...Nf6 13.Nb5 Bg4 14.Nd6 Qd6=; B) 11...Be6 12.Nd4 (12.Bd3 h6 13.Nd4 Bg4 14.0–0 c5=) 12...Nd7 13.Nc3 Nc3 14.Ne6 Re6=; C) 11...Nd7 12.Bd3 (12.Nc3 Nc3 13.Bc3 Bd6 14.d4 Nf6=; 12.Bc4 N7b6 13.Bd3 g6 14.0–0 Bg4=; 12.d4 N7f6 13.Bc4 Bd6 14.0–0 c6=) 12...N7f6 13.0–0 Bg4 14.Ng5 g6=; D) 11...Nc6 12.Bb5 (12.Bd3 Ncb4 13.Bh7 Kh8 14.ab4 Nb4=; 12.Nc3 Nf4 13.Rc1 a5 14.Kd1 Ng6=; 12.d4 Bg4 13.Nbd2 Nf4 14.Ne5 Ne5=; 12.Bc4 Bg4 13.Bd3 h6 14.Bh7 Kh8 15.Be4+=; 12.Be2 Bg4 13.d3 Be6 14.0–0 Bd6=; 12.d3 Bf5 13.Nc3 Nc3 14.Bc3 Qd6+=) 12...Bd7 13.Nc3 Nf6 14.0–0 Bd6=; E) 11...c6 12.Nc3 (12.Bd3 h6 13.0–0 Nf6 14.Bc4 Bd6=; 12.d4 Bd6 13.Bd3 h6 14.0–0 Be6=) 12...Nf4 13.Ne4 Ng6 14.Bc4 b5=; F) 11...Be7 12.Bd3 h6 13.Nc3 Nc3 14.dc3 Bd6=; G) 11...Bg4 12.Bd3 (12.Nc3 Nc6 13.Nd5 Qd5 14.Bc4 Qh5+=) 12...h6 13.Bh7 Kh8 14.Be4 c6=.

11.Nc3 A) 11...Bd7 12.Qc2 (12.Qb3 Nb6 13.d4 Bf5 14.Be2 Bd6=) 12...Bc6 13.Bc4 Nb6 14.Bd3 g6=; B) 11...Nf6 12.Qb3 (12.Be2 Nc6 13.0–0 Be6 14.d4 Nd5=; 12.Rc1 Nbd7 13.d4 a6 14.Qc2 b5=; 12.Bc4 Nbd7 13.Qc2 Bd6 14.Nb5 Nb6=; 12.Qc2 Bg4 13.Bd3 Bf3 14.gf3 Nbd7=; 12.Rd1 c6 13.Qb3 Nbd7 14.Ng5 Re7=; 12.d4 Nbd7 13.Qb3 Nb6 14.Qc2 Be6=) 12...Nc6 13.Bc4 Qe7 14.Nd5 Nd5=; C) 11...Nb6 12.Qc2 Be6 13.d4 Bd6 14.Bd3 h6+=; D) 11...Be6 12.Ng5 (12.Qc2 Nc3 13.dc3 h6 14.Bd3 Bd6=; 12.Bd3 Nc6 13.Qc2 h6 14.0–0 Nf6=; 12.Nd4 Bd7 13.Qc2 Nc3 14.Bc3 c5=; 12.Rb1 Nd7 13.Qc2 Nc3 14.dc3 Nc5+=; 12.Nd5 Bd5 13.Bc4 Nc6 14.d3 a6=) 12...Nc3 13.dc3 Bd5 14.0–0–0 c6+=; E) 11...Ne7 12.Bc4 Nf5 13.d4 Nd6 14.Bd3 Bg4+=; F) 11...Nc3 12.Bc3 (12.dc3 Nd7 13.Rd1 Bd6 14.Qh4 Qh4=) 12...Be6 13.d4 Nd7 14.Qc2 Bd5=.

11.d3 A) 11...Nc6 12.Be2 (12.Nc3 Nb6 13.Qc2 Bf5 14.Ne4 Qd5+=; 12.Nbd2 f5 13.Be2 Be6 14.0–0 Bd6=; 12.Qc2 Be6 13.Be2 Bd6 14.d4 Qd7+=; 12.d4 Bd6 13.Bb5 Bd7 14.Be2 Ne5+=; 12.Qb3 Rb8 13.Be2 Be6 14.Qc2 Bd6+=; 12.Qc4 Be6 13.Qc2 Bd6 14.Be2 Qe7+=) 12...Be6 13.0–0 Be7 14.Nbd2 Qd7=; B) 11...Be6 12.Nbd2 (12.Be2 Nc6 13.0–0 Be7 14.Nbd2 Qd7=; 12.Nc3 Nd7 13.Be2 Nc5 14.Qc2 Nc3=; 12.Nd4 Bd7 13.Qb3 Nb6 14.Be2 c5+=; 12.Qc2 Nc6 13.Be2 Be7 14.Nc3 Qd7=) 12...c6 13.Qc2 Be7 14.Be2 c5=; C) 11...Bd6 12.Qc2 (12.Nc3 Be6 13.Ne4 Nc6 14.Be2 Nb6=; 12.Nbd2 c6 13.Ne4 Bc7 14.Be2 Ba5=; 12.Qd4 Nf6 13.Qh4 Nbd7 14.Be2 Be7+=; 12.Qb3 b6 13.Nc3 Be6 14.Nd5 Bd5=; 12.Be2 Nc6 13.Nc3 Be6 14.Ne4 Nb6=; 12.Qh4 Be7 13.Qg3 Bf6 14.Ra2 Nc6+=) 12...Nc6 13.Be2 Nce7 14.Nc3 Be6=; D) 11...Nd7 12.Qc2 (12.Be2 Nc5 13.Qc2 Bf5 14.Nd4 Bg6=; 12.Nbd2 N7b6 13.Qc2 Bf5 14.Ne4 c5+=; 12.Nc3 N7b6 13.Qh4 Be7 14.Qg3 Bd6+=; 12.Qc4 Nc5 13.d4 Ne4 14.Nbd2 Nd2+=; 12.Qb3 Nc5 13.Qc2 Bf5 14.Bd4 Ne6+=; 12.Qd1 Bd6 13.Be2 N7b6 14.0–0 Be6=) 12...Bd6 13.Be2 N7b6 14.0–0 Qe7=; E) 11...Nb6 12.Qc2 Bf5 13.Be2 Nc6 14.0–0 Bd6=; F) 11...Be7 12.Nc3 (12.Be2 Nc6 13.0–0 Be6 14.Nc3 Qd7=; 12.Nbd2 Be6 13.Be2 c5 14.0–0 Nd7=; 12.Qc2 Nc6 13.Be2 Qd6 14.Nc3 Nc3=; 12.Qb3 Nc6 13.Be2 Rb8 14.0–0 Be6=; 12.d4 Bf5 13.Qb3 Nb6 14.Ne5 Be6=) 12...Nc6 13.Be2 Bf6 14.d4 Be6=; G) 11...c5 12.Be2 (12.Nc3 Be6 13.Be2 Nc3 14.Bc3 Nc6=; 12.Nbd2 a6 13.Be2 b5 14.Qc2 Bf5=; 12.d4 Nc6 13.Bb5 Nb6 14.Qd1 Bf5+=; 12.Qb3 Nc6 13.Be2 Rb8 14.Nc3 Be6+=; 12.Qc2 Nc6 13.Be2 Be6 14.0–0 f5=) 12...a6 13.0–0 Bd6 14.Qc2 b5=.

11.Bd3 A) 11...Nc6 12.0–0 (12.Qc2 Ncb4 13.Bh7 Kh8 14.ab4 Nb4=) 12...Ne3 13.Bh7 Kh7 14.de3 Bd6=; B) 11...Be6 12.0–0 (12.Ng5 Qg5 13.Qe8 Qg2 14.Rf1 Nb6=; 12.Qc2 h6 13.Nd4 Bg4 14.Bh7 Kh8 15.Be4=; 12.Nc3 c6 13.Qc2 h6 14.Bh7 Kh8 15.Bf5=) 12...c6 13.Qc2 g6 14.Nd4 Nd7=; C) 11...c6 12.Qc2 (12.0–0 Bd6 13.Qc2 Nf6 14.Nc3 Bg4=; 12.Qb3 Be6 13.Qc2 g6 14.0–0 Bd6=) 12...h6 13.0–0 Bg4 14.Bh7 Kh8 15.Ne5=; D) 11...Nd7 12.Qc2 N7f6 13.0–0 Bd6 14.Nc3 h6=; E) 11...h6 12.Be2 (12.Be4 c6 13.0–0 Na6 14.Qc2 Ndb4+=; 12.Nc3 Bd7 13.Qb3 Nf4 14.Be4 Re4=; 12.Qc2 Nc6 13.Bh7 Kh8 14.Be4 f5=; 12.0–0 Nc6 13.Bb5 Bd7 14.Qb3 Nb6=; 12.Qb3 Nc6 13.0–0 a6 14.Qc2 Ncb4+=; 12.Bc2 Nc6 13.0–0 Nb6 14.Qb5 Be6=) 12...Nc6 13.0–0 Bd6 14.Nc3 Be6=.

11.d4 A) 11...Be6 12.Qc2 (12.Nbd2 Nd7 13.Qc2 Nf4 14.Ne5 Ne5=; 12.Nc3 Nd7 13.Qc2 Nf4 14.Ne5 Ne5=; 12.Be2 Nd7 13.0–0 Bd6 14.Bd3 N7f6=; 12.Qb3 Nd7 13.Qc2 Nf4 14.Nbd2 Rc8+=) 12...Bd6 13.Bd3 h6 14.0–0 Nd7=; B) 11...Nd7 12.Nc3 (12.Qc2 N7f6 13.Nc3 Nc3 14.Bc3 Bd6=; 12.Qb3 N7b6 13.Qc2 g6 14.Be2 Bf5+=; 12.Be2 N7f6 13.0–0 Bd6 14.Nc3 Be6=; 12.Qa5 N7f6 13.Bb5 Bd7 14.Nc3 b6+=; 12.Bb5 c6 13.Be2 Bd6 14.Nc3 N7f6+=) 12...Nc3 13.Bc3 Nf6 14.Bc4 Ne4=; C) 11...Nc6 12.Qc2 (12.Bb5 Bd7 13.Be2 a6 14.Qc2 Be6=; 12.Be2 Be6 13.Bb5 Bd7 14.Be2 a6+=; 12.Nc3 Nb6 13.Qd1 Na5 14.Bd3 Nac4=; 12.Nbd2 Nf4 13.Rd1 Bf5 14.Ne5 b5=; 12.Qb3 a6 13.Qc2 Nf4 14.Ne5 Ne5=) 12...Bg4 13.Nbd2 Nf4 14.Ne5 Ne5=; D) 11...Bd6 12.Qb3 (12.Qc2 Nf4 13.Ne5 Be5 14.de5 Ng6=; 12.Nc3 Be6 13.Qc2 h6 14.Nd5 Bd5=; 12.Be2 Be6 13.Qc2 Nc6 14.Bb5 Qf6=; 12.Nbd2 Nd7 13.Nc4 N7b6 14.Nb6 Nb6=) 12...Nf4 13.Nbd2 Nc6 14.Rc1 a5=; E) 11...Be7 12.Qb3 (12.Nc3; 12.Qc2; 12.Be2) 12...a5 13.Bd3 Ra7 14.Nc3 Be6+=; F) 11...Bg4 12.Qb3 (12.Ne5 Be6 13.Bd3 Nd7 14.Nd7 Bd7+=) 12...Bf3 13.gf3 Nb6 14.Nd2 c6=; G) 11...Bf5 12.Qb3 (12.Nc3 Nc3 13.Bc3 Nd7 14.Be2 Nb6=; 12.Be2 Nd7 13.Nc3 N7b6 14.Qb3 Rb8=; 12.Qb5 c6 13.Qb3 Nd7 14.Nc3 N7b6+=) 12...Nc6 13.Nc3 Nb6 14.Be2 Be6=.

11.Be2 Nb6 12.Qc2 (12.Qa5 Nc6 13.Qh5 g6 14.Qg5 Qg5=) 12...Bd6 13.Bd3 h6 14.0–0 Bg4=.

11.Be2 c5 12.Nc3 (12.0–0 Be6 13.d4 Nc6 14.Rd1 Rc8=; 12.Qb3 Nc6 13.Nc3 Nc3 14.Qc3 Bg4=; 12.d4 Be6 13.Qc2 Nd7 14.0–0 Rc8=; 12.Qc2 Nc6 13.0–0 Be6 14.Bb5 Rc8=; 12.Bd3 Nc6 13.0–0 h6 14.Qc2 Ncb4+=) 12...Be6 13.Ng5 Nc3 14.dc3 Nc6=.

11.Be2 c6 12.Nc3 (12.Qc2 Bd6 13.Nc3 Nf6 14.0–0 Bg4=; 12.d3 Nd7 13.Nc3 N7b6 14.Qa5 Nc3=; 12.0–0 Nd7 13.Nc3 N7f6 14.Nd5 Nd5=; 12.Qb3 Nd7 13.Nc3 Nc5 14.Qc2 Nc3=; 12.d4 Be6 13.Qc2 Bd6 14.Nbd2 Nd7=; 12.Qd4 c5 13.Qd3 Be6 14.Nc3 Nc6+=) 12...Be6 13.0–0 Nd7 14.Qc2 Nc3=.

11.Be2 Nc6 12.Qc2 (12.Nc3 Be6 13.Nd5 Bd5 14.0–0 Qd6=; 12.d4 Bd6 13.Nc3 Be6 14.0–0 Nc3=; 12.0–0 Bd6 13.Nc3 Be6 14.Bb5 Nc3=; 12.d3 Be6 13.0–0 Bd6 14.Nbd2 Nb6=; 12.Qb3 a6 13.Nc3 Be6 14.Qc2 Nc3=; 12.Bb5 Bd7 13.0–0 Nb6 14.Qd1 Bd6=) 12...Bg4 13.0–0 Bd6 14.Nc3 Nf6=.

11.Be2 Bd6 12.Qb3 Nb6 13.Qc3 f6 14.Qc2 Be6 =.

11.Be2 Bd7 12.Qc2 (12.Qb3 Nb6 13.0–0 Nc6 14.d4 Bd6=; 12.Qc4 Be6 13.Qc2 Bd6 14.Nd4 Qg5=; 12.Qa5 Bc6 13.d3 Bd6 14.Qd2 Nf6=; 12.Qd1 Nc6 13.0–0 Bd6 14.Qb3 Nb6=) 12...Nc6 13.0–0 Bd6 14.Nc3 Nc3=.

11.Be2 Nd7 12.0–0 (12.d3 N7b6 13.Qc2 Bd7 14.0–0 Ba4=; 12.Qc2 N7f6 13.Nc3 Bd6 14.Ng5 Nb6=; 12.Nc3 Nc3 13.Bc3 Nc5 14.Qc2 Bd6=; 12.d4 N7f6 13.0–0 Bd6 14.Nc3 Be6=; 12.Qd4 N7b6 13.Qd3 Be6 14.0–0 c5+=; 12.Qb3 Nc5 13.Qc2 Bg4 14.d4 Ne4=) 12...Nc5 (12...N7b6 13.Qc2 Bd6 14.Nc3 Nc3=) 13.Qc2 Bg4 14.d3 (14.Nc3 Nc3=) 14...Qe7 (14...c6=) 15.Nc3 c6 16.Nd5 cd5 17.Nd4 Be2 18.Qe2 Na4 19.Bc1 Qd7 20.Bd2 Bc5 21.Nf3 d4 22.Rfc1 de3 23.fe3 (23.Be3!? Rad8 24.d4 Bd4 25.Nd4 Qd4 26.Bd4 Re2 27.Ba7=) 23...Rad8–/+ 24.Ne1 Qd6 (24...b5 25.Kh1–/+) 25.Rcb1? (better is 25.Qf3+=) 25...Nc3!!–+ (25...Nc3 26.Qf3 Nb1 27.Rb1 b6–+ (27...Ba3?! 28.Rb7 Rd7 29.Rb3–+)) 0–1. Sternik,Ryszard – Pierzak,R, corr, 1995.

10.Qa4 Bd6

11.Qd4 Ne6 12.Qc3 Nd7 13.Bc4 Nf6 14.0–0 a6 +=.

11.Qd4 Nh5 12.Be2 (12.Bb5 c6 13.Be2 Nf6 14.d3 Be6=; 12.Qc3 Be6 13.Bc4 Bc4 14.Qc4 a6+=; 12.Qc4 Nc6 13.Nc3 Nf6 14.Nb5 Be6=; 12.Qd3 Nc6 13.Be2 Nf6 14.0–0 a6+=; 12.Bc4 Qe7 13.Qd5 Nf6 14.Qg5 Nbd7=; 12.Qa4 Nd7 13.Be2 Nhf6 14.0–0 a6=) 12...Nd7 13.d3 Nc5 14.Nbd2 Nf6 =.

10.d4 Bg4

11.Qa4 Bd7 12.Qc2 Nc6 13.g3 Bg4 14.Nbd2 +=.

11.Qa4 Bf3 12.gf3 Nd7 13.Nd2 Nf6 14.Qc2 =.

11.Qb3 Nc6 12.Ne5 Ne5 13.de5 Ne6 14.Bc4 +=.

11.Qb3 Nd7 +=.

11.Qc2 Bf3 12.gf3 Nc6 13.Kd1 Nd5 14.Bd3 +=.

11.Nc3 Nd7 (11...Nc6 12.Ne2 Nd5 13.Nc3 Nc3 14.Bc3=; 11...Bd6 12.h3 Be6 13.Rc1 a6 14.Ne5=; 11...c6 12.Qb3 Nd7 13.h3 Bf3 14.gf3=; 11...Qf6 12.h3 Bf5 13.Qb3 b6 14.Ne5+=) 12.Rc1 c6 13.h3 Be6 14.Qd2 +=.

11.Nbd2 c5 12.g3 (12.dc5 Bc5 13.Qa4 Bd6 14.g3=) 12...Nd5 (12...Ne6 13.h3 Bh5 14.dc5+=) 13.Bg2 (13.Qb3 cd4 14.Nd4+=) 13...cd4 14.Bd4 Nc6 15.Nb3 Nd4 16.Qd4 Be6 17.0–0 g6 (17...Be7 18.Ne5+=) 18.Qd2 Bg7 19.Nfd4 Qb6 (19...Qe7!?=) 20.Rab1+/– Red8 (20...Bd4 21.Nd4 (21.ed4?! Qd6=) 21...Qa6 22.Ne6 fe6 23.Bd5+/–) 21.Na5 Qa6 (21...Bd4 22.Rb6 Bb6 23.Nb7 Ne3 24.Nd8 Nf1 25.Kf1 Rd8=) 22.Nb7+– (22.Rb7?! Rac8 23.Rb3 Rd7+/–) 22...Nb6 (22...Rdb8 23.Ne6 fe6 24.Nc5 Qa3 25.Ne6+– (25.Bd5?! ed5 26.Qd5 Kh8+/–)) 23.Nc5 Qa3 24.Nce6 fe6 25.Ba8 Na8 (25...Bd4 26.ed4 Ra8 27.Ra1+–) 26.Qb4 Qa6 (26...Qb4 27.Rb4 Bd4 28.Rd4 Rd4 29.ed4 Nc7+–) 27.Qe7 (27.Qe7 Qd6 28.Qd6 Rd6 29.Rb8 Kf7 30.Ra8 Bd4 31.ed4+–) 1–0. Lanca,Ivan (2280) – Cervenka,Roman (2230), corr Moravia–ch8, 1998.

11.Nbd2 Nd7 12.Qb3 Rb8 13.Bc4 Qe7 14.0–0 =.

11.g3 Nd5 (11...Nh3 12.Nbd2 Ng5 13.Bg2 Nc6 14.Qa4=; 11...Ng6 12.Bg2 Nc6 13.0–0 Bd6 14.Nc3=; 11...Ne6 12.Bg2 Ng5 13.Nbd2 Nc6 14.Qa4=; 11...Qd5 12.Nbd2 Nh3 13.Bg2 c6 14.Qb3=) 12.Bg2 Nc6 13.0–0 Qf6 14.Nbd2=.

11.h3 Be6 12.Ne5 Nd5 13.Bd3 Nd7 14.Nd7 =.

11.h3 Be6 12.Ne5 Nd5 13.e4 =.

11.h3 Bh5 12.Qb3 b6 =.

11.h3 Bh5 12.g4 Bg6–/+ 13.Ne5 Be4 14.Rg1 Ng6 15.Nc3 Ne5 16.Ne4 Ng6 17.Bg2 c6 18.Qb3 Nd7 19.Rd1 (19.d5 Nb6 20.dc6 bc6=) 19...Qc7 (19...Nh4 20.Bh1=) 20.d5 cd5 21.Rd5 Nb6 22.Rh5 (22.Rd4 Qh2 23.Kf1 Nh4=) 22...Rad8 (22...Qh2 23.Kf1 Rac8 24.Ng5+=) 23.Rb5 (23.Ra5 Qh2 24.Kf1 Nc8=) 23...Rd7 (23...Qh2 24.Kf1–/+) 24.Ng5 (24.Ra5 Qh2 25.Kf1 Red8+=) 24...h6 (24...Bd6 25.Ra5 h6 26.Ne4+=) 25.Nf3 Nc4 (25...Nf4 26.g5=) 26.Nd4 (26.g5 Nf4 27.Bf1 Nb2 28.Qb2 Qd6+=) 26...Nb2 (26...Qh2 27.Nf3 Qc7 28.g5=) 27.Qb2 Qc4 (27...Qc4 28.Nf5 Qd3+=). Trochet,Jean Sebastian – Meslage,Jean, corr FRA Cup5/4T/0, 1995.

11.Nbd2 Nc6

12.Rc1 Rb8 13.Qc2 Qd5 14.Kd1 +=.

12.Qc2+= a6 13.Ne5 Ne5 14.de5 =.

12.g3 Nd5 13.Qb3 +=.

12.g3 Nh3 13.Qb3= Qf6 (13...Rb8 14.d5 Na5 15.Qd3+=) 14.Bh3 Bh3 (14...Bf3 15.Nf3 Qf3 16.0–0=) 15.d5 (15.Qb7? Rab8 16.d5 Qf3 (16...Rb7 17.Bf6 gf6 18.dc6+=; worse is 16...Qb2 17.Qb2 Rb2 18.dc6+=) 17.Nf3 Rb7–+) 15...Na5 16.Qb5 Qb6 17.Qb6 ab6 18.Rc1 (18.Be5 Bg2 19.Rg1 Bf3 20.Nf3 Red8=) 18...Bg2 (18...c6 19.Ke2=) 19.Rg1 Bf3 20.Nf3 Nb3 Attacking the isolated pawn on a3 21.Rb1 (21.Rc7 Nc5 22.Nd4 Nd3 23.Ke2 Nb2–/+) 21...Nc5 22.Rd1 Bd6 23.Nd4 (23.h3 Na4 24.Bc1 Nc3+=) 23...Ne4 (23...Na4 24.Ba1 Ba3+=) 24.Bc1 (better is 24.Nb5!?+=) 24...Ra5 (24...Nc3 25.Rd2–/+) 25.Nf5 Be5 26.Rd3 Nc5 27.Rd1 Nb3 28.e4 (28.f4 Bf6+=) 28...Nc1 29.Rc1 Ra3 30.Kd2 g6 31.Ne3 Bd6 32.Ng4 (32.Nc2!? Ra4 33.f3+=) 32...Kg7–+ 33.e5 Bb4 34.Ke2 h5 (34...Bc5 35.Ra1+=) 35.Ne3 Bc5 (35...Bc5 36.d6 cd6 37.ed6 Be3 38.fe3 Rae3 39.Kd2 R3e6–+) 0–1. Kozlowski,Waldemar – Pietrzak,Janusz, corr 1AMM Poland, 1991.

12.h3 Be6 13.g3 Nd5 14.e4 +=.

12.h3 Bf3 13.Nf3= Na5 (13...Bd6 14.Rb1=) 14.g3 (14.Ne5 Nd5+=) 14...Ng6 15.Bc3 Nc6 16.Qb3 Qf6 (16...Rb8 17.Bg2+=) 17.Bg2 (17.Be2 h6+/–) 17...Qd6 Attacking the isolated pawn on a3 (17...Rab8 18.0–0 Bd6 19.e4+=) 18.0–0 Rab8 (18...Be7 19.d5 (19.Qb7?! Rab8 20.Qa6 Nd4=) 19...Nd8 20.Nd4+/–) 19.Ng5+/– Qe7?? (better is 19...Nh8+/–) 20.Nf7!+– Qf7 Decoy to f7 (20...h6 21.Nd6 Kh7 22.Ne8 Qe8 23.Rfe1+–) 21.Bd5 (21.Bd5 Qd5 22.Qd5 Kh8 23.Rfe1+–) 1–0. Pegiel,Marek – Dziel,Jaromir, corr 2AMM Poland, 1993.

12.h3 Bh5 13.g3 Nd5 14.Be2 Bg6 (14...Qd7 15.Qb3=) 15.Nh4= Be4 16.Ne4 Re4 17.Ng2 Qg5 18.h4 Qe7 (18...Qd8!?=) 19.Bf3+/– Rd8 20.Be4 Qe4 21.0–0 Bd6 22.Qe2 h6 23.f3 (23.Qb5 Nb6+/–) 23...Qh7 (23...Qe6!? 24.Kh2 Nde7+=) 24.e4+/– Nb6 25.d5 Bc5 26.Kh2 Nd4 27.Qd1 Nb5 28.Rc1 Nd7 29.e5 Ba3 30.Ba3 Na3 (30...Ne5 31.Be7 Re8 32.d6 cd6 33.Bd6+–) 31.Qb3 (31.Rc7?! Ne5 32.Qb3 Nac4 33.Rc4 Nc4 34.Qc4 Qf5+–) 31...Ne5 32.Qa3 g5 (32...Rd5 33.Qa7 Qf5 34.Nf4 Rd2 35.Kg1+–) 33.Rc7 Rd5 34.Rb7 Rd3 (34...gh4 35.Rb8 Kg7 36.Qf8 Kf6 37.Nh4+–) 35.Rb8 Kg7 36.Qf8 (36.Qa1 f6 37.Qa7 Rd7+–) 36...Kf6 (36...Kg6 37.f4 Nf3 38.Kh1+–) 37.Rb7 gh4 (37...Qg7 38.Qe7 Kg6 39.hg5 hg5+–) 38.Qe7 Kg6 39.Nh4 Kg7 1–0. Pegiel,Marek – Gugulski,Marcin, corr 2AMM Poland, 1994.

9.Qb3 Na6

10.Ba6 Ng2 11.Kd1 ba6 (11...Bd2 12.Nbd2 ba6 13.Rg1 Bh3 14.Qc3 f6 15.Ng5+– 2.84) 12.Qb4 Qd5 13.Ke2?? (13.e4 Re4 14.Qc3= f6 15.Nd4=) 13...c5 14.Bc3?? (better is 14.Nc3 Qh5 15.Qc4–/+) 14...Qh5 (better is 14...cb4 15.Ne5 bc3 16.Nc3 Qe5–+) 15.Qa4 Bb7 16.Rg1 (16.Kd1–+) 16...Bf3 0–1. Dernovoy,Ivan Nikolayevich – Soerensen,Arne, corr ICCF W–ch11 sf, 1980.

10.Ne5= Re5 11.Be5 Nc5 12.Qc4 Nfd3 (12...Bd2 13.Nd2 Ncd3 14.Kd1 Nf2 15.Kc2 Ng6=) 13.Ke2 (13.Bd3 Nd3 14.Ke2 Ne5 15.Qb4 Be6=) 13...Qg5 (13...Ne5 14.Qb4 Ned3–+) 14.Bc7?? (better is 14.Bg3= Be6=) 14...b6?? (14...Qf6!? 15.f3 Qa1 16.Qd4 Qd4 17.ed4–+) 15.Bf4?? (better is 15.Bg3+/–) 15...Qf6 (15...Qh4 16.g3 Qh5 17.f3–+) 16.Nc3 (better is 16.Qd4 Qd4 17.ed4 Nf4 18.Kf3–+) 16...Ba6 17.Qd4 Nf4 (17...Qf5 18.e4 Qf4 19.f3–+) 18.Kd1 Bc3 19.Qc3 Qc3 20.dc3 Rd8 21.Kc2 Bf1 22.Rhf1 Ng2 23.Rg1 Nh4 24.Rad1 Rc8 25.Rd5 (25.Rg4 Nf3 26.Rf4 Ng5–+ (26...Nh2?! 27.Rh1+=)) 25...Ng6 (better is 25...f5–+) 26.Rdg5? (26.Rgd1 Kf8–+) 26...f6 (26...Ne4!? 27.R5g2–+) 27.R5g4 Rc7 (27...f5 28.Rc4–+) 28.Rd1 Ne5 29.Rgd4 b5 30.Rb1 a6 31.Rd8 Kf7 32.Ra8 (32.Rd4 f5–+) 32...Ng4 33.Rf1 Nh2 34.Rh1 (34.Rg1 Ne4 35.Ra6 Nf3–+) 34...Ng4 (34...Ng4 35.Rh7 Nf2–+) 0–1. Wendland – Lieber,Karl Heinz, corr, 1984.

10.Ne5= Be6 11.Qa4 Nd5 12.Ba6 ba6 13.0–0 Rb8 14.Nc6 Qd7 =.

10.Ba6 ba6

11.0–0 Nd3 12.Bd4 Bf5= 13.a3 (13.Ne5 Ne5 14.Be5 Rb8+= 15.d4+=) 13...Ba5 (13...Bf8 14.Qa4+= c5 15.Bc3–/+) 14.Qa4 (14.Bc3 Bb6 (14...Rb8 15.Qc4 Bb6+=) 15.Qc4+=) 14...c5 (14...Bb6 15.Qa6 A) 15...Qd7 16.a4 c5 17.Bc3 Nf2 18.Qb5 Nd3+=; B) 15...c6 16.Bc3 Qd5 17.Qa4 Be4 18.Ne1 Qg5+=; C) 15...Bg6 16.Bc3 Qd5 17.Ne1 Nc1 18.Bb2 Nb3+=; D) 15...c5 16.Bc3 Rb8 17.Ne1 Qd7 18.Qc4 Bc7+=; E) 15...h6 16.Bc3 Qd5 17.Bb4 Re6 18.Nc3 Qd8–/+) 15.Bc3 Bc7 (15...Bb6 16.Qa6 Rb8 17.Ne1 Qd7 18.Qc4 Bc7+=) 16.Qa6 Re6 (16...Be4 17.Qb5 Re6 18.Ne5 Ne5–+) 17.Qa4 Be4 18.Qd1 Qd5 (18...Rb8–/+) 19.Nh4 Qg5 20.g3 (20.f4 Qh4 21.Qe2–+) 20...Qh4!! 21.Qe2 (21.gh4 Rg6) 21...Qh2 0–1. Gerold,Guenter – Nilsson,Lars Goeran, corr ICCF EU–ch M, 1982.

11.0–0 Nd3 12.Nd4 Nb2 13.Qb2 (13.Qb4!? Nd3 14.Qc3+= c5 15.Qd3 cd4 16.ed4+=) 13...Bd6= (13...Bc5 14.Nb3 Rb8 15.Qc2 Bd6 16.Nc3=; 13...c5 14.Nc2 Ba5 15.d4 cd4 16.Nd4=) 14.Nf3 (14.Qc2!?= c5 15.Ne2 Rb8 16.Nbc3=; 14.Rc1 Be5 15.Qb4 Qd6 16.Qd6=) 14...Bg4–/+ 15.Nd4 c5 (15...Be5 16.Qc3+=) 16.Nb3 (16.Nc2–/+) 16...Qb8 (16...Bf3 17.Nd4 cd4 18.gf3 Rb8 19.Qd4 Qg5 20.Kh1 Be5–+) 17.h3 Be2 18.Re1 Bd3 19.Qc3 Be5?? (better is 19...c4 20.Nd4 Bb4–/+) 20.Qd3+– Ba1 21.Na1 (21.Na1 Qb5 22.Qc2+–) 1–0. Cornacchini,Gabriele – Leanza,Marco Antonio, IECG, 2000.

11.0–0 Nd3 12.Nd4 Nb2 13.Qb4!? Nd3 14.Qc3+= c5 15.Qd3 cd4 16.ed4 +=.

11.0–0 Nd3 12.Nd4!? Nb2 13.Qb4+= Nd3 14.Qc3 c5 15.Qd3 +=.

11.Ne5 Re5 12.Be5 Be6 13.Bf4 Bb3 14.ab3 Qd3 15.Bg3 –+.

11.0–0 Nd5

12.Rc1 Bd6 13.d3 Be6 14.Qa4 Nb4 15.Ne1 =.

12.Nc3 Nc3 13.dc3 Bd6 14.c4 Qe7 15.Rfc1 =.

12.d3 Be7 (12...c5 13.a3 Ba5 14.Nbd2 Bf5 15.Qc4+=; 12...Bf8 13.a3 Bg4 14.Nbd2 Rb8 15.Qc2+=; 12...a5 13.a3 Bd6 14.Nc3 Nf6 15.Rab1+=; 12...Bd6 13.Nbd2 Be6 14.Nc4 Rb8 15.Qc2=) 13.Ne5 Bf6 14.Nc6 Qd6 15.Bf6=.

12.Nd4 Qd6 13.a3 Bc5 14.Rc1 Nf4 15.Qc4 =.

12.Re1 Bf5 13.Qc4 Re4 14.Qa6 Re6 15.Qc4 =.

12.Ne5 Bf5 13.d3 Bd6 14.Nf7 Bh2 15.Kh2 +=.

12.Be5 Bg4 13.Bc7 Qc7 14.Qd5 Bd6 15.h3 =.

9.Qb3 Nc6

10.a3 Bd6 11.Bc4 Be6 12.Be6 Re6 13.g3 Ng6+=.

10.Bb5? Be6 11.Qa4 Ng2 12.Ke2 Bg4 (12...Nf4! 13.Ke1 Nd3 14.Bd3 Qd3 15.Qd1–+) 13.Bc6 Nf4 14.Kf1?? (14.Ke1 Nd3 15.Kf1 bc6 16.Rg1 Nb2 17.Qb4 Bf3 18.d4–+) 14...Qd3 15.Kg1 Bh3 16.Nc3 Qg6 0–1. Schaar,Joerg (1940) – Mickley,Manfred (2400), RSX16D – Goldener Oktober–1, 2007.

10.Bc3 a5 11.a3 (11.Qb2 Bc3 12.dc3 Qf6 13.a3 Bg4–/+) 11...Bc3 12.dc3 Rb8 13.Nbd2 b5–/+.

10.Bc4 Qe7 11.0–0 Na5 12.Qc2 Nc4 13.Qc4 Ng6+=.

10.Ne5 Ne5 11.Be5 Bd2 12.Nd2 Re5–/+.

10.g3 Ne6 11.a3 A) 11...Bf8 12.Be2 (12.Qd3 Bd7 13.Bg2 Nc5 14.Qc2 Be6–+) 12...Nc5 13.Qc2 Bg4 14.0–0 Qd5–/+; B) 11...Nc5 12.Qc4 (12.Qd1 Ba5 13.Bc3 Bg4 14.h3 Bc3–/+) 12...Be6 13.Qh4 Ba5 14.Qd8 Rad8–/+.

10.a3 Be6

11.Qa4 Bd6 12.Nc3 Bf5 13.d4 a6 14.Qd1 Qf6 15.g3 Nh3 16.Be2 Bg4 17.Kf1 Ng5 18.Ng5 Be2 19.Qe2 Qg5 20.h4 Qf6 21.Rd1 b5 22.Kg1 Na5 23.h5 Nc4 Attacks the isolani on a3 24.h6 Nb2 (24...Qg6 25.Kf1+=) 25.Qb2+= g6 26.e4 Qe6 27.e5 Be7 28.Kg2 c5 29.dc5 Qe5 30.Rd5 Qf6 31.Qd2 Bf8 32.f3 Qe6 33.Rd7 (33.Ne4 f5 34.Nd6 Qe2 35.Qe2 Re2 36.Kg1 Re3+=) 33...Rac8 (33...Bc5 34.Ne4 Be7+= (34...Ba3? 35.Qc3 Qa2 36.Rd2 Qd2 37.Qd2+–)) 34.Ne4= Rc5 35.Nc5 Bc5 36.Rh4 Qe2 (36...Ba3?? 37.Re4 Qd7 38.Qd7 Re4 39.fe4+–) 37.Qe2 Re2 38.Kf1 Re8 39.a4 Rb8 40.Ke2 f5 41.Rg7 Kh8 42.Rc7 Bd6 43.Ra7 Kg8 (43...b4 44.Rc4 b3 45.Rb7 (45.Ra6?! Bf8 46.Rc1 Bh6+/–) 45...Re8 46.Kf2+–) 44.Rd4 Bf8 45.a5 1–0. Van Daatselaar,Jan Bart – Traut,Werner (2230), EM/CL/Q21–4 ICCF Email, 2002.

11.Qc2 Ba5 12.Kd1 Ng6 13.Bb5 Nh4+=.

10.Qc4 Bd6–/+

11.a3 Bf5 12.d3 Rb8 13.Nbd2 Qe7+=.

11.Qc3 Ne5 12.Ne5 Be5 13.d4 Bf6 (13...Nd5 14.Qc5 Bd6 15.Qc2–/+) 14.Nd2+= Bg4 15.h3 (15.Rb1 Bf5 16.Rc1 Nd5+=) 15...Nd5 16.Qb3 Re3!! (16...Re3 17.Qe3 Ne3 18.hg4 Nc2 19.Ke2 Na1 20.Ba1 Bd4 21.Bd4 Qd4–+) 0–1. Merino Rey,J – Perez Medrano,A, ESP–chT, 1989.

11.Qc3 Bf8 12.Qc4 Nd5 13.Nc3 Ndb4–/+.

11.g3 Be6 12.Qc3 Nh5 13.Bg2 Nb4+=.

10.Bc4 Be6

11.0–0 Bc4 12.Qc4= Nd3 (better is 12...Ng6= 13.d3 Qe7 14.Nc3 Nge5 15.Ne5=; 12...Nd5 13.d3 Qd7 14.a3 Be7 15.Nbd2=; 12...Ne6 13.d4 Be7 14.Bc3 Nb8 15.d5=) 13.Bd4+/– Nf4 14.Bg7 (14.ef4 Re4 15.Nc3+/–) 14...Nh3 (14...Kg7 15.Qf4) 15.Kh1 Kg7 16.Qg4 Kh8 17.Qh3 (worse is 17.gh3 Qf6 18.d4 Rg8=) 17...Qd3 18.Rc1 Ne5 (18...Rad8 19.Nc3+/–) 19.Nc3 (19.Ne5 Re5 20.Qf3 Rc5+/–) 19...c6 20.Qh4 Bf8 Black fights for the Initiative 21.Qd4 (21.Ne5 Re5 22.Qf6 Bg7 23.Qf7 Qd2 24.Qb7+=) 21...Qd4+= 22.Nd4 (worse is 22.ed4 Nf3 23.gf3 Rad8+=) 22...Nd3 23.Rf1 (23.Rcb1 c5 (worse is 23...Nf2 24.Kg1 c5 25.Nf5+/–) 24.Nf5 A) worse is 24...Nf2 25.Kg1 Re5 26.Ng3+/– (26.Kf2?! Rf5 27.Ke2 b6+=); B) 24...b6=) 23...c5 24.Ndb5 Red8 25.Rab1 a6 26.Na3 (26.Nc7 Ra7 27.N7d5 b5=) 26...b5+= 27.Nc2 Nb4 28.Nb4 cb4 The passed pawn on d2 will quickly become a dangerous weapon 29.Ne4 f5 30.Ng3 Rd2 31.Nf5 Ra2 32.Nd4 a5 33.Rbc1 (33.g3!?–/+) 33...a4 34.Nb5 Rb8 35.Nd4 b3 36.Kg1 Bg7 37.Rfd1 Bd4 38.ed4 Rc2 (38...Rc2 39.Ra1 b2–+) 0–1. Junge,Wolfgang – Pfeiffer,Alfred, corr DDR–Cup6 sf12, 1979.

11.0–0 Nd5 12.Qc2+= Bg4 (12...Bd6 13.d3 Ncb4 14.Qd2 Bg4 15.Nd4+=) 13.a3 Bf3 14.gf3 Qg5 15.Kh1 Bf8+=.

11.0–0 Nd5 12.d3 Na5 13.Qa4 Bd7=.

11.0–0 Nd5 12.Qd3 Na5 (12...Nb6 13.Qd8 Rad8 14.Be6 Re6 15.d4+=; 12...Bd6; 12...Be7) 13.Qd4 Bf8 14.Bb5 c6 15.Be2+=.

11.Be6 Re6 12.0–0 Nd3 13.Bd4 Nf4 14.Nc3 Qd6 15.Rfe1=.

11.Be6 Re6 12.0–0 Nd5 13.a3 Bd6 14.d3 Qd7 15.Nbd2=.

11.Be6 Re6 12.0–0 Ng6 13.d4 Nh4=.

11.Be6 Ne6 12.a3 Nc5 (12...Bf8 13.Qb5 a6 14.Qf5 Bd6 15.0–0=; 12...Be7 13.Qb7 Qd7 14.Qb3 Nc5 15.Qc3=) 13.Qc2 Nd3 14.Ke2 Nb2 15.Qb2+=.

10.Bc4 Ng2

11.Kd1 Bg4–/+ 12.Bf7 Kh8 13.Bd5 Bf8 14.Rg1 (14.h3 Bh5 15.a3–+) 14...Qd7–+ 15.Rg2 Na5 16.Qc3 Qd5 17.Rg4 Qf3 18.Ke1 Qg4 19.Na3 (19.Qa5 Bd6 20.Qb5–+) 19...Bb4 20.Qc7 Re3! 21.fe3 Qg1 22.Ke2 Qg2 23.Kd3 Qd2 24.Ke4 Qg2 25.Kd3 Qb2 26.Rg1 Qd2 27.Ke4 Re8 28.Kf3 Re3 (28...Qe3 29.Kg2 Qe2 30.Kh3 Qh5 31.Kg2 Re2 32.Kg3 Re3 33.Kf4 Qf3 34.Kg5 h6 35.Kh4 Qh3) 29.Kg4 Qd4 30.Kh5 (30.Qf4 Qd7 31.Qf5 Re4 32.Kg3 Bd6 33.Qf4 Bf4 34.Kg2 Qg4 35.Kh1 Qf3 36.Rg2 Re1) 30...Rh3 31.Kg5 Qf6 32.Kg4 Qf3 33.Kg5 Rh5 0–1. rogeliovargas (2345) – pcmvr, net–chess.com, 2011.

11.Kf1 Qd7–/+.

11.Kf1 Ne3?? 12.de3 Bh3 (12...Be6 13.Be6 fe6 14.Rg1+–) 13.Ke2 Be6 14.Rg1 (14.Be6 Re6 15.a3 Bf8+/–) 14...Bc4+/– 15.Qc4 g6 16.a3 Bd6 17.Qc3 Do you see the mate threat? 17...Ne5 18.Nbd2 Qd7 19.Rac1 Qb5 20.Kd1 c6 (20...Qa4 21.Rc2+/–) 21.h4 (21.Ne4 Red8 22.Nfd2 Qa4 23.Rc2 Bc7+/–) 21...Rad8 22.Rc2 Qd3 (22...Qa4 23.Ne5 Be5 24.Qb4 Qb4 25.ab4 Bb2 26.Rb2+/–) 23.Ne5 Be5 24.Qd3 Rd3 25.Ke2 Rd7 26.h5 (26.Be5 Re5 27.e4 Re6+–) 26...Bb2+/– 27.Rb2 Kg7 28.hg6 hg6 (28...fg6 29.e4+/–) 29.Nb3 b6 30.Rd2 Rd2 31.Nd2 c5 32.Nc4 Kf6 33.Rd1 Re7 34.f3 b5 35.Nd6 b4 36.Rd3 (36.Ne4 Re4 37.fe4 ba3+–) 36...Ke5 (36...Ke6 37.Nc4 Rc7 38.Rd6 Ke7 39.a4+/–) 37.Nc4 Kf6 38.e4 Rc7 39.Ke3 Ke6 40.f4 White prepares the advance e5 (40.Rb3 Rb7+/–) 40...f6 41.Rd6 Kf7 (41...Ke7!?+/–) 42.e5+– (42.e5 f5 43.Rf6 Kg7 44.Kd3+–) 1–0. Psion – Psion, 4 Min/Zug, 1990.

11.Kf1 Bh3 12.Bf7 Kh8 13.Be8 Qe8 14.Rg1 Qg6 15.Ke2 Qh5 16.Qc4 Rf8 17.Qe4 Rf7 18.d3? Re7 19.Qc4 Be6 20.Rg2 Bc4 21.dc4 Rf7 22.Rg3 Qf5 23.Nbd2 Bd2 24.Kd2 Qe4 25.Rg7 Rg7 26.Rg1 Qf3 (26...Qf3 27.Bg7 Kg8 28.Be5 Kf7–+) 0–1. Rolly – Caissa, playchess.de, 2002.

11.Kf1 Bh3 12.Bf7 Kh8 13.Be8 Qe8 14.Ng5=.

10.g3 Be6

11.Qc2 Bd5 12.gf4 Bf3 13.Rg1 Nd4 14.Qc4!? c5 15.Bd4 Qd4 16.Qd4 cd4 17.Rg3–/+.

11.Qc2 Bd5 12.gf4 Bf3 13.Rg1 Nd4 14.Qd3 c5–+ 15.Bd4 cd4 16.Rg3 Be4 (16...de3!? 17.fe3 (17.Rf3 ed2 18.Kd1 Re1 19.Kc2 d1Q 20.Qd1 Qd1 21.Kb2 Rc8 22.Nc3 Bc3 23.Rc3 Qa1 24.Kb3 Rc3 25.Ka4 Qb2 26.Bd3 Ra3) 17...Qf6 18.Rf3 Qa1 19.Qb3–+) 17.Qb3–/+ Ba5 18.Bg2? (18.Qb2 Rc8 19.Na3 Qd5–/+) 18...Bb1 (better is 18...Bg2 19.Rg2 de3 20.fe3 Qd4–+) 19.Rb1–/+ de3 20.fe3 Qd2 21.Kf1 Rad8 22.Qb2 Qb2 (22...Qd3 23.Kg1 g6 24.Bf1–+) 23.Rb2 b6 24.Ke2 Re6 25.Bh3 (25.a3 Red6–/+) 25...Red6 26.Kf3 Rd3 27.Bf5 ½–½. Maly,Wolfgang – Storm,Ingemar, corr ICCF WT–H–604, 1987.

11.Qc2!? Nd5 12.a3 (12.Bd3 Nf6 13.0–0 Bd5 14.Be2 a6+=) 12...Bg4 13.Bg2 Be7 14.0–0 Qd7=.

11.Qc2!? Bg4 12.gf4 (12.Nh4 Qd5 13.Rg1 Nd4 14.Bd4 Qd4–+; 12.Rg1 Ne6 13.Nh4 Ned4 14.Qc4 Re5–+) 12...Bf3 13.Rg1 Nd4 14.Qc4 c5–/+.

11.Qc2!? Ng6 12.Bg2+= (12.Be2 Bd6 13.0–0 Qe7 14.Qc3 Qf8+=; 12.a3 Bd5 13.Be2 Be4 14.Qb3 Ba5+=) 12...Bd5 13.0–0 Be4 14.Qb3 a5+=.

11.Bc4?? Bc4–+ 12.Qc4 Nd3 13.Kf1 Nb2 14.d4 (14.Qb5–+) 14...Nc4 0–1. rogeliovargas (2345) – pierred (2760), net–chess.com, 2011.

11.Qd1 Nd3–+ 12.Bd3 Qd3 13.Qe2 Qc2 (13...Qe4 14.0–0 Bd5–+) 14.Bc3 Bd5 (14...Bg4–+) 15.0–0 (15.Kf1 Ne5 16.Ne5 Bh1 17.Bb4 Re5 18.d4 Bg2 19.Ke1–+) 15...Qe4 (15...Ba2?! 16.Qb5 Bd6 (16...Bb1 17.Rfb1 Bc3 18.dc3 Reb8 19.Ne5+=) 17.Qb7–/+ Bd5 18.Ne1 Qg6 19.Qb5–/+) 16.Kg2 Bc4 17.Qe1 (17.Qd1 Bf1 18.Qf1 Rad8 19.d4–+) 17...Bf1 (17...Ne5 18.Be5 Re5 19.Qd1–+) 18.Kf1?? (18.Qf1 Rad8 19.d4–+) 18...Rad8 (18...Rad8 19.Qe2 Ne5 20.Be5 Re5–+; better is 18...Qf3 19.Kg1 Rad8–+) 0–1. Redelaar – Verbaan,B, corr NED–ch H, 1983.

9.Qc2 Nc6

10.a3 Ba5 (10...Bd6 11.Nc3 Bg4 (11...Qe7 12.Nb5 Bg4 13.Nd6 cd6 14.Qa4 Bf3 15.Qf4 Bd5=; 11...Ne5 12.Ne5 Be5 13.d4 Bd6 14.g3 Nh3 15.Nb5 Be6=) 12.Nb5 Bf3 13.gf3 a6 14.Nd6 Qd6 15.0–0–0 Nd5+=) 11.g3? (better is 11.Qc4 Ng6 12.Be2+= Be6 13.Qb5 Rb8 14.0–0 a6 15.Qh5 Bd5=; 11.Kd1 Ng6 12.Bd3 (12.Bb5 Bd7 13.d3 Nce5 14.Bd7 Qd7 15.Ne5 Ne5–/+; 12.d4 Bg4 13.Nbd2 Nh4 14.Kc1 Nf3 15.Nf3 Qd5+=) 12...Be6 13.Nc3 Qd7 14.Na4 Bd5 15.Bf5 Qe7=) 11...Qd5–+ 12.Be2?? (better is 12.Qd1 Bg4 13.gf4 Bf3 14.Bc4–+) 12...Ne2 13.Ke2 (13.e4 Bg4 14.Ng5 Qg5–+) 13...Bg4 (13...Bg4 14.e4 Re4 15.Kd1 Bf3 16.Kc1 Bh1 17.Bg7 Re1 18.Kb2 Qb5 19.Qb3 Qb3 20.Kb3 Kg7–+) 0–1. Rabold – Tarnowiecki, (year?).

10.Nc3 Bg4 A) 11.a3 A1) 11...Ba5 12.0–0–0 Ng6 13.d4 Qd6 14.Bc4 Rad8+=; A2) 11...Bf3 12.gf3+= Nd4 13.Qd1 Ba5 14.Rg1 Qd7–/+; B) 11.Nb5 Bf3 12.gf3 a6 13.Rg1 Ne6 14.a3 ab5–/+; C) 11.0–0–0 C1) 11...Ng6 12.h3 (12.d4 Bd6 13.d5 Nce5 14.Be2 Rc8+=; 12.Bd3 Bd6 13.Bg6 fg6 14.Qb3 Be6–/+; 12.Be2 Bd6 13.d4 Nb4 14.Qb3 c6–/+) 12...Bf3 13.gf3 a6 14.d4 Bd6+=; C2) 11...Bf3 12.gf3 Ng6 13.d4 Bd6 14.Bb5 Nb4=; C3) 11...Nh3 12.d4 Bd6 13.a3 Bf3 14.gf3 Qh4+=; C4) 11...Nh5 12.h3 (12.Bb5 Nf6 13.Bc6 bc6 14.h3 Be6+=; 12.d4 Nf6 13.d5 Ne5 14.Ne5 Re5+=) 12...Be6 13.a3 Ba5 14.Bd3 h6=; C5) 11...Nd5 12.Bb5 (12.Bd3 h6 13.Be4 Be6 14.a3 Nc3+=; 12.Bc4 Nb6 13.Bd3 h6 14.Bh7 Kh8+=; 12.a3 Be7 13.Nd5 Qd5 14.Bd3 Qh5+=; 12.h3 Be6 13.Bd3 h6 14.a3 Bd6+=; 12.Nd5 Qd5 13.Bd3 h6 14.Bc4 Qh5+=; 12.Be2 Be6 13.a3 Nc3 14.dc3 Bd6+=) 12...a6 13.Bc6 bc6 14.h3 Bh5+=.

10.Nc3 Ba5

11.a3 A) 11...Bg4 12.0–0–0 (12.Qa4 Qf6 13.0–0–0 Nh3 14.Ne4 Qe6+=) 12...Ng6 13.d4 Qd6 14.Bc4 Rad8+=; B) 11...Be6 12.Qe4 Ng6 13.Qd3 Nh4 14.Nh4 Qh4+=; C) 11...a6 12.Kd1 Ng6 13.Bd3 Nce5 14.Ne5 Re5+=; D) 11...Bd7 12.0–0–0 Ng6 13.d4 a6 14.Bd3 b5=; E) 11...Ne5 12.Ne5 Re5 13.d4 Qd4 14.Qd2 Qd2–+.

11.Ba3 A) 11...Ne5 12.Ne5 Re5 13.0–0–0 Bf5 14.e4 Bg6+=; B) 11...a6 12.Rc1 (12.0–0–0 Bb4 13.Bb2 Ng6 14.d4 Bd6+=; 12.Kd1 Ng6 13.Rb1 Nh4 14.Nh4 Qh4–/+; 12.h3 Nb4 13.Bb4 Bb4 14.g3 Nd5+=; 12.Rb1 Bg4 13.Qa4 Nd3 14.Bd3 Qd3–+; 12.d3 Bg4 13.0–0–0 Qf6 14.Ne4 Qa1–/+; 12.Qb1 b5 13.Qc2 Bg4 14.0–0–0 Nh3–+) 12...Nb4 13.Bb4 Bb4 14.h4 Ba3+=; C) 11...Nb4 12.Bb4 Bb4 13.a3 Bc3 14.Qc3 Bf5+=; D) 11...Rb8 12.0–0–0 (12.Rc1 Bb4 13.Bb2 Bg4 14.a3 Bf3–/+; 12.Bc5 Bg4 13.Qa4 Qf6 14.Bd4 Qf5–+; 12.Qa4 Nd3 13.Bd3 Qd3 14.Qb5 Qg6–/+; 12.h3 Qf6 13.Bb2 Bf5 14.Qa4 Bd3–/+; 12.Kd1 Bc3 13.Qc3 Nd5 14.Qc5 Nf6–/+; 12.Rb1 Bg4 13.Qa4 Qf6 14.Ne4 Qg6–+) 12...Bb4 13.Bb2 Ng6 14.d4 Bd6+=; E) 11...Qf6 12.Bb2 (12.Rc1 Bg4 13.Ne4 Qf5 14.Nc3 Qh5–+) 12...Nb4 13.Qa4 Bg4 14.Qa5 Nbd3+=; F) 11...Bg4 12.Rg1 (12.Qa4 Qf6 13.Bb2 Ng2 14.Bg2 Bf3–+; 12.Nb5 a6 13.Nc3 Bf3 14.gf3 Nd4–+) 12...Bb4 13.Bb2 Bc5 14.Ne4 Nb4+=.

11.Qa4 A) 11...Qd6 12.Nb5 (12.a3 Bf5 13.Qb3 Rad8 14.Bc4 Nd3–/+; 12.Rd1 a6 13.a3 Bf5 14.Qb3 b5–/+; 12.Rc1 a6 13.Ba3 Nd3 14.Bd3 Qd3+=; 12.Ba3 Nd3 13.Bd3 Qd3 14.Qb5 Qg6–/+; 12.d4 Bg4 13.0–0–0 Bc3 14.Bc3 Nd5–/+; 12.0–0–0 Nd3 13.Bd3 Qd3 14.Nd4 Bf5–/+) 12...Qb4 13.Qb4 Nb4 14.Bc3 Nfd5+=; B) 11...Qf6 12.0–0–0 (12.Qc4 Bg4 13.0–0–0 Nh3 14.Ne4 Qg6+=) 12...Ne6 13.Bb5 Ned8 14.Ne2 Qe7+=; C) 11...Nd3 12.Bd3 Qd3 13.Qb5 Qg6 14.0–0 Bg4–/+.

10.Nc3 Bf8

11.a3 a5 12.Rd1 (12.Rb1 Bg4 13.Ne4 Bf5 14.d3 Bb4–/+; 12.Rc1 Be6 13.d3 a4 14.Na4 Bf5=; 12.d3 Bf5 13.Rd1 Bg4 14.Ne4 Bf3=; 12.Kd1 Ng6 13.d4 Nge5 14.Ne5 Ne5+=) 12...Bg4 13.Ne4 Qd5 14.Nfg5 Bf5=.

11.a3 a6 12.0–0–0 (12.Rc1 Rb8 13.d3 Ne6 14.Be2 b5=; 12.Rb1 Bg4 13.Ne4 Bf5 14.d3 Bb4+=; 12.Rd1 Bg4 13.Ne4 Qd5 14.Nfg5 Bf5=; 12.d3 Bg4 13.Ne4 Nd5 14.Be2 f5=) 12...Nd5 (12...Ng6 13.d4 Bd6 14.h4 Bg4+=) 13.h4 (13.Nd5 Qd5 14.Bd3 h6+=) 13...Nf6 14.d4 Bg4 (14...Bd6+=) 15.Bd3 Bf3 (15...Bd6 16.Ne4 h5 17.Nc5 Bc5 18.dc5+=) 16.gf3= h6 17.Ne4 Ne4 18.fe4 Na7 19.d5 c6 20.d6 (20.Qb3 b5=) 20...Qd6+= Attacks the isolani on a3. White creates threats along the open d–file (20...Bd6? 21.e5 Re5 22.Be5 Ba3 23.Kd2 Qa5 24.Bc3+–) 21.Rhg1 Kh8 22.e5 Qe7 23.Qc4 Qc5 (23...Nb5 24.Qe4 g6 25.e6 Bg7 26.Bg7 Kh7 27.Rg6 Qa3 28.Bb2 Qc5 29.Kd2 Qb4 30.Qb4 fg6 31.Bg6 Kg6 32.Qg4 Kh7 33.Qg7) 24.Qc5+= Bc5 25.e6 f6 The passed pawn on e6 quickly leads to threats 26.Bf5 Rad8 27.Rd7 Rd7 28.ed7 Rd8 29.a4 Be7 30.e4 c5 31.e5 Nc6 32.ef6 Bf6 33.Bf6 gf6 34.Rg6 Ne7 35.Rh6 Kg8 36.Rf6?? (better is 36.Be4=) 36...Kg7–+ 37.Rb6 Nf5 38.Rb7 Kf7 (38...Kf7 39.h5 Ke6–/+; better is 38...Nh4!? 39.Kd2 Nf3 40.Ke3 Ne5–+) 0–1. Zagt – Borowiec, DDR, 1986.

11.a3 Rb8 12.d3 (12.Rb1 Bg4 13.Qa4 Qd6 14.Ba1 Rbd8–/+; 12.Rd1 Bg4 13.Ne4 Qd5 14.Nfg5 Bf5=; 12.Rc1 a6 13.d3 Bf5 14.Rd1 Bg4+=; 12.Kd1 Ng6 13.d4 Be6 14.Rb1 Na5+=) 12...Bg4 13.Ne4 Nd5 14.Be2 f5=.

11.a3 Bd7 12.Rc1 Rc8 13.h4 Bd6 14.Ng5 Ng6 +=.

11.a3 Be6 12.Rc1 Qe7 13.Qe4 Ng6 14.Bb5 Qd8 =.

11.a3 Qe7 12.d4 (12.h3 Qd8 13.d3 Bf5 14.Rd1 Nd5=; 12.0–0–0 Ng6 13.d4 Qd8 14.h4 Bd6=; 12.Qa4 Qf6 13.Kd1 Nh3 14.Ke1 Ng5+=; 12.Rd1 Bg4 13.Qa4 Bf3 14.gf3 Qf6+=; 12.Rb1 Qc5 13.Kd1 Bf5 14.Qb3 Bb1–+; 12.Rc1 Bg4 13.Ne2 Nd5 14.Ned4 Nd4=) 12...Bg4 13.0–0–0 Ng6 14.h4 h5=.

11.a3 Bg4 12.0–0–0 (12.Qa4 Qf6 13.0–0–0 Nh3 14.Nd5 Qf5–/+) 12...Ng6 13.h3 (13.d4+= Bd6 14.Bb5 a6+=) 13...Bd7 14.d4 Bd6 =.

10.Qc4 Qd6

11.Bc3 Bf5–/+ 12.a3 (12.a3 Bc3 13.Nc3–/+). Kilpatrick,Robert (1805) – Pearcey, corr SCCA, 1980.

11.Ng5+= Do you see the mate threat?. White launches an attack 11...Be6 (11...Nd5 12.a3 Ba5 13.Qd3=) 12.Qc2= (12.Qf4? Qf4 13.ef4 Bg4 14.Be5 Ne5 15.fe5 Re5 16.Be2 Re2 (16...Rg5?! 17.f4–+) 17.Kf1 Rae8–+ (17...Bd2?! 18.Nd2 Rd2 19.Ne4–+)) 12...g6 (better is 12...Ng6!?=) 13.Ne4+/– (worse is 13.Ne6 Qe6 14.a3 Bd6+=) 13...Bf5 14.Nd6 Bc2 15.Ne8 Re8 16.Nc3 Ne5 (16...Ba5 17.d4 Bd3 18.h3+/–) 17.d4 Ned3 (better is 17...Nfd3!? 18.Bd3 Nd3 19.Kd2 Nf2+/–) 18.Kd2+– Nf2 19.Kc2 Nh1 20.ef4 Nf2? (20...c6+–) 21.Nd5 Be7 (21...Bd6 22.Nf6 Kf8 23.Ne8 Ke8 24.Re1 Kd7+–) 22.Re1 (22.Nc7?! Rc8+/–) 22...Kf8 (22...Rd8 23.Ne7 Kf8 24.Bc4+–) 1–0. pereira (1980) – junguts (1800), chesshere.com, 2007.

10.g3?

10.g3? Qd5 11.Qd1 Bg4 12.gf4 Bf3–+ (12...Qf3?! 13.Qf3 Bf3 14.Rg1=).

10.g3? Qd5 11.gf4 Qf3 12.Rg1 Re3 –+.

10.g3? Nh3 11.a3+= Bg4 12.ab4? (better is 12.Bg2 Ba5 13.Ng1+=) 12…Bf3–+ 0–1. prakeshdesai – rogeliovargas (2345), net–chess.com, 2011.

9.Ne5 Nc6?!

10.Nc6 bc6= 11.a3 A) 11...Bd6 12.g3 (12.Qb3 Bf5 13.Qc3 Qg5 14.g3 Nd5+=; 12.Qc2 c5 13.Nc3 Rb8 14.d3 Bb7+=) 12...Ng6 13.Qc2 Rb8 14.Bg2 Ne5=; B) 11...Bf8 12.Qc2 (12.Nc3 Bf5 13.Qf3 Nd3 14.Bd3 Qd3+=) 12...Rb8 13.Nc3 Bf5 14.Qf5 Rb2+=.

10.Nc6 bc6= 11.Qa4 A) 11...Bd6 12.g3 Ne6 13.Nc3 Bb7 14.Be2 c5=; B) 11...a5 12.a3 Bd6 13.g3 Ng6 14.Qc6 Rb8=; C) 11...Qe7 12.a3 Bd6 13.g3 Ne6 14.Qc2 c5=; D) 11...Rb8 12.Bc3 (12.Qa7 Bd2 13.Nd2 Rb2 14.0–0–0 Qf6–+) 12...Qd5 13.f3 Qc5 14.Kf2 Bf5=.

10.Nc6 bc6= 11.Qc2 Rb8 12.g3 (better is 12.Nc3!?= c5 13.Rg1 Re5 14.Qa4 Bf5+=; 12.a3 Ba5 13.Nc3 c5 14.g3 Ne6+=) 12...Qd5–/+ 13.Rg1 Bf5 14.Qc1 (better is 14.Qd1 Nd3 15.Bd3 Qd3 16.Nc3–/+) 14...Nd3 (14...Bb1 15.Rb1 Nd3 16.Bd3 Qd3 17.Kd1 Red8 18.Qc2 Qd2–+) 15.Bd3 Qd3 (15...Bd3 16.Qd1 Bb1 17.Rb1 Qa2 18.Ke2 Red8–+) 16.Qd1 Re3! 17.fe3 Qe3 18.Kf1 Bh3 19.Rg2 Qd3 20.Kg1 (20.Qe2 Bg2 21.Ke1–+ Qc2 22.Nc3 Bd5 23.Nd1–+; 20.Ke1 Bg2 21.Qe2 Qc2 22.Nc3 Bd5 23.Nd1–+; 20.Kf2 Re8 21.Qg4 Bc5 22.Bd4 Bd4 23.Qd4 Qe2) 20...Bc5 21.Rf2 Rb2 22.Qe1 Kf8 (22...Bf2 23.Kf2–+) 23.Nc3 (23.Qc1–+) 23...Qf3 0–1. Kurth,Wilfried – Astroem,Leif, corr ICCF W–ch GT, 1981.

10.Nc6 bc6= 11.Qc2 Qd5 12.Rg1 Bf5 13.Qc4 Qc4 14.Bc4 Bd6+=.

10.Nc6 bc6= 11.Qf3 A) 11...Bd6 12.g3 Ng6 13.Bc4 Be6 14.Qc6 Rb8=; B) 11...Qd6 12.Qg3 (12.a3 Bc5 13.Qg3 Qh6 14.d4 Bd6+=) 12...Qh6 13.Kd1 Nd5 14.Be2 Bd6+=; C) 11...Nd3 12.Bd3 Qd3+= 13.a3 Bd6 14.Nc3 Rb8+=.

10.ef4 f6

11.a3 Ba5 12.Bb5 Bd7 13.Qb3 Kh8 14.0–0+=.

11.a3 Bd6 12.Bc4 Kh8 13.d4 fe5 14.fe5+/–.

11.Bb5 Rb8 12.a3 Ba5 13.Qc2 (13.0–0 fe5 14.Bc6 bc6 15.Be5+/–) 13...Bd7 14.Bd3+=.

11.Bb5 Qd5 12.Bc6 bc6 13.0–0 fe5 14.fe5 Be6 15.Qc2 Rab8 16.Rc1 c5 17.Re1 Red8 18.Bc3 Kh8 19.a3 Qc4 20.ab4 cb4 21.Ra7 bc3 22.Qc3 Qe4 23.Qc1 Qg6 24.Ra1 Bh3 25.g3 Qd3 26.Qc6 Rd5 27.Nc3 Rdd8 28.e6 Qd2 29.Rad1 Qg5 30.e7 1–0. Dopper,Johan – Mothes, corr SOK–95–110, 1995.

11.Bb5 Bd6 12.d4 fe5 13.fe5 a6 14.Bc6 bc6 15.Qb3 Be6+/–.

11.Bb5 Bd6 12.d4 fe5 13.fe5 Be6 14.0–0+/–.

11.Bb5 Bd7? 12.Qb3+– Kh8 (12...Be6 13.Qa4 Rb8 14.a3+= (worse is 14.Nc6 bc6 15.Qb4 Rb5–/+; 14.Bc6?! bc6 15.0–0 fe5+=)) 13.Bc6 Bc6 14.Qb4 fe5 15.0–0 (15.fe5 Qg5 16.Qc3 Qg2=) 15...ef4 (15...Qh4 16.Qc3 Qf4+–) 16.Qf4 Qd7 17.Nc3 Rad8 (17...Rf8 18.Qg5+–) 18.Rae1 b6 (18...Kg8 19.Re8 Re8 20.f3+–) 19.Re8 Re8 20.d4 Qc8 (20...Kg8 21.Rd1+–) 21.d5 Bb7 22.Nb5 Bd5 (22...Re2 23.Be5 Kg8 24.Nc3+– (worse is 24.Na7 Qe8 25.Bc7 Bd5+–)) 23.Nc7 (worse is 23.Qc7 Qc7 24.Nc7 Re2 25.Nd5 Rb2+–; 23.Na7?! Qd7 24.Qb4 Ba2+–) 23...Rd8 (23...Re4 24.Bg7! Kg7 25.Qg5 Kh8 26.Nd5 Qe6+–) 24.Qg3 Rd7 (24...Rg8 25.Nd5 Qb7 26.Rd1+–) 25.Nd5 (25.Nd5 Qf8 26.Re1+–) 1–0. Dopper,Johan – Hasler,Ulrich, corr ICCF, 1993.

11.Bb5 fe5 12.Bc6 bc6 13.fe5 (13.Qb3 Qd5!) 13...Ba6!

11.Bc4 Kh8 12.0–0 fe5.

11.Bb5 Kh8

12.Qa4 Rb8 13.0–0+/– fe5 14.Be5 a6 15.Bc6 bc6 16.Qc6 Ba5 (16...Bd6 17.Re1 Bb7 18.Qc3+/–) 17.Nc3 Bb7 18.Qa4 Bb6 19.d4 Qh4 (19...Rc8 20.Rab1+–) 20.Rfe1 Re7 21.Ne4 (21.Re3 a5+–) 21...Rf8 (21...Bd5 22.Re2+–) 22.Nc5+– Bg2 (22...Bc5 23.dc5 Qh6 24.Rab1+–) 23.Kg2 Qg4 24.Kf1 Qh3 25.Ke2 Bc5 26.Kd2 (26.dc5 Re5 27.fe5 Qf3 28.Kd2 Rd8 29.Kc1 Qc3 30.Kb1 Qe1 31.Kb2 Qf2 32.Qc2 Rb8 33.Kc3 Qc5 34.Kd2 Rd8 35.Kc1 Qa3 36.Kb1 Rb8 37.Qb3 Rb3 38.ab3 Qb3 39.Kc1 Qe3 40.Kc2 Qe5–+) 26...Bb6 (26...Rd8 27.Rac1 Bb6 28.Bc7 Rd4 29.Qd4 Bd4 30.Re7+/–) 27.Qa6 Qh2 (27...Rd8 28.Qd3 Ba5 29.Kc2 Qd3 30.Kd3 Be1 31.Re1+=) 28.Qa3 Ref7 Increasing the pressure on the isolated pawn on f4 (28...c5 29.Re2= (29.dc5? Qf2 30.Kc3 Ra7–+)) 29.Ke2 (29.Re2 Qg2+=) 29...Re8= 30.Qe3 Qh5 31.f3 (31.Kd3 Kg8 32.Rh1 Qg4+=) 31...Qh2= 32.Kd3 Rd7 (32...Rfe7 33.Qg1 Qh6 34.Qg5=) 33.Rh1 (33.Re2 Qh5 34.Kc3 Bd4 35.Qd4 Rd4 36.Kd4 Qg6–+) 33...Qb2 The pressure on the isolated pawn grows (33...Qg2 34.Rhg1 Re5 35.Qe5 Rd4 36.Qd4 Qf3 37.Kc4 Bd4 38.Kd4 Qf4 39.Kd3 Qd6 40.Ke4 Qb4 41.Ke3 Qa3 42.Ke4 h5–+) 34.Bg7+= Kg7 The mate threat is Rxe3 35.Rag1 Kf7 36.Rh7 Kf6 37.Rh6 (37.Rg6 Kg6 38.Qe8 Kh7 39.Qd7 Kg6 40.Qe6 Kg7 41.Qe7 Kg6 42.Qg5 Kf7 43.Qd5 Ke7=) 37...Kf7 38.Rh7 Kf6 39.Rh6 (39.Rg6 Kg6 40.Qe8 Kh7 41.Qd7 Kg6 42.Qe6 Kg7 43.Qe7 Kg6 44.Qg5 Kf7 45.Qd5 Ke7=) 39...Kf7 40.Rh7 Kf6 ½–½. Turcot,Jean – Farid,Omar, corr BEL, 1994.

12.Qa4 Bd6 13.d4 fe5 14.Bc6 bc6 15.de5+/–.

12.Bc6 bc6 13.0–0 fe5 14.fe5+/–.

12.0–0 fe5

13.Bc6 bc6

14.fe5+/–.

14.Be5 Bd6 15.d4 Re6 (15...Bf5 16.Nc3+/– (16.Re1 Bb4 17.Re3 c5 18.d5 Qd7+/–; 16.Qc1 c5 17.dc5 Be5 18.fe5 Re5+=; 16.Qd2 c5 17.Qa5 Be5 18.de5 Qd4+/–) 16...c5 17.Re1 cd4 18.Qd4 Qd7+/–; 15...Be6 16.Nc3 (16.Re1 Bb4 17.Re3 c5 18.Rg3 Re7+/–) 16...Qh4 17.Re1 c5 18.Nb5 Rad8+/–; 15...Rb8 16.Re1 (16.Qa4 a6 17.Re1 Rb4 18.Qc6 Be5+/–; 16.Nc3 Bf5 17.Qa4 c5 18.Rfd1 cd4+/–; 16.Qh5 Rf8 17.Rd1 Bf5 18.Nc3 Ba3+=) 16...Bb4 17.Re3 Bf5 18.Nc3 c5+/–; 15...Qh4 16.Re1 (16.Qf3 Bf5 17.Nc3 Rab8 18.Rfe1 Re6+/–; 16.Qc1 Bf5 17.Re1 Rad8 18.Nd2 Be5+/–; 16.Nc3 Bf5 17.Qa4 c5 18.Rfe1 Qh5+/–) 16...Bf5 17.Nc3 Be5 18.fe5 Rad8+/–) 16.Nc3 (16.Re1 Rb8 17.Nc3 Qh4 18.Rb1 Rb6+–; 16.Qf3 Rb8 17.Rd1 Rg6 18.f5 Rh6+/–; 16.a3 Qh4 17.Re1 Rb8 18.Nd2 Be5+/–; 16.Qh5 Rg6 17.Qf3 Bg4 18.Qc3 Rb8+/–; 16.Qd2 Re7 17.Re1 Bf5 18.Nc3 Rb8+/–) 16...Qh4 17.g3 (17.Qf3 Bd7+/– 18.Ne4 Rae8+/–) 17...Qh3 18.f3 (18.Qf3 Rh6+/–) 18...Rg6 (18...Qh5+/–) 19.Rf2 Bd7 20.Ne4 h6 (20...Be6 21.Rb2+/–) 21.Nc5 (21.Qb1 Re6+–) 21...Bc5 22.dc5 Be6 (22...Bf5 23.Qb3+–) 23.Rg2 (23.Qb1!? Qf5+–) 23...Bd5+/– 24.Qd3 White terminates the opponent with strong threats 24...Re6 25.Qc3 Re7 26.Rf1 Qe6 27.Rff2 (27.Re1 Qf7+/–) 27...Rb8 (27...Qg6 28.a3+/–) 28.Rb2 Qc8 29.Rb8 Qb8 30.Rb2 Qf8 31.Kf2 Qc8 32.g4 (32.g4 Kg8 33.f5+/–) 1–0. Schuehler,Ernst – Beutler,Manfred, corr DDR–ch11 sf04, 1981.

14.Be5 Bd6 15.Re1 A) 15...Be6 16.Nc3 Rb8 17.Qa4 Be5 18.fe5 Qd2+/–; B) 15...Rb8 16.Nc3 (16.Qa4 a6 17.Nc3 Qd7 18.Re2 Rb2+/–) 16...Be6 17.Qa4 Be5 18.fe5 Qd2+/–; C) 15...c5 16.Nc3 (16.Qb3 Bf5 17.Qg3 Qd7 18.Nc3 c4+/–; 16.Qf3 Be6 17.d3 Rb8 18.Nd2 Qh4+/–; 16.Qh5 Be6 17.Nc3 Be5 18.fe5 Qd2+/–; 16.Qc2 Bb7 17.Qb2 Be5 18.fe5 Rb8+/–; 16.Na3 Bb7 17.Qb3 Rb8 18.Qc3 Qd7+/–; 16.Qc1 Be6 17.Nc3 c4 18.Ne4 Bd5+/–) 16...Bf5 17.d4 cd4 18.Qd4 Qd7+/–; D) 15...a6 16.Qf3 (16.Nc3 Bf5 17.Qa4 c5 18.Qc6 Be6+/–; 16.Qa4 Rb8 17.Nc3 Qd7 18.Re2 Rb2+/–) 16...Bf5 17.Qc6 Re6 18.Qf3 Rb8+/– E) 15...Bf5 16.Nc3 (16.Qa4 Re6 17.Nc3 Qe8 18.d4 c5+/–; 16.Qf3 Qd7 17.Nc3 Rab8 18.Qg3 Be5+/–) 16...c5 17.d4 cd4 18.Qd4 Qd7+/–.

14.Be5 Be6 15.a3 Bd6 16.Re1 (16.Nc3 Be5 17.fe5 Qd4 18.Re1 Rad8+/–; 16.Qf3 Qd7 17.Re1 Bd5 18.Qh5 Rab8+/–; 16.Qa4 Bd5 17.Nc3 Be5 18.fe5 Re5+=; 16.Qc2 Bd5 17.Qf5 Re6 18.Nc3 Qd7+/–; 16.Qh5 Be5 17.fe5 Qd4 18.Nc3 Rf8+=; 16.Qc1 Bd5 17.d4 Qh4 18.Qc3 Re6+=) 16...Be5 17.fe5 Qd4 18.Nc3 Rad8+/–.

14.Be5 Be6 15.Qc2 A) 15...Bd6 16.Nc3 (16.Re1 Qd7 17.Nc3 Bf5 18.Qa4 Re7+/–) 16...Qd7 17.Rfe1 Rad8 18.Ne4 Bd5+/–; B) 15...Re7 16.Qc6 Bd5 17.Qa4 Bd6 18.Re1 Qe8+/–; C) 15...Rb8 16.Qc6 Re7 17.a3 Ba5 18.Re1 Bb3+–; D) 15...Bd5 16.Re1 Qd7 17.Nc3 Be6 18.Qa4 a5+/–; E) 15...a5 16.Qc6 Bd5 17.Qc7 Qc7 18.Bc7 Re2+–; F) 15...c5 16.a3 Ba5 17.Qc5 Bb6 18.Qc6 Rb8+/–.

14.Be5 Be6 15.Nc3 A) 15...Qd7 16.Qa4 Bc5 17.d4 Bd6 18.Rfe1 a5+/–; B) 15...a5 16.Qa4 (16.a3 Bd6 17.Re1 c5 18.d3 Kg8+/–; 16.Re1 Qd3 17.a3 Bc5 18.Qh5 Bd6+/–) 16...Qd3 17.Qc6 Rac8 18.a3 Bd6+–; C) 15...Kg8 16.Qa4 Bd6 17.Qc6 Bd7 18.Qe4 Rb8+/–; D) 15...Rb8 16.Re1 Kg8 17.Qa4 Qd2 18.Red1 Qb2+–; E) 15...a6 16.Qa4 Bd6 17.Qc6 Bd7 18.Qe4 Bb5+/–; F) 15...Bd6 16.Re1 Rb8 17.Qa4 Be5 18.fe5 Qd2+/–; G) 15...Bc5 16.d4 (16.Re1 Rb8 17.Qh5 Bd6 18.Rab1 Rb1+/–; 16.Qh5 Bd4 17.Rae1 Be5 18.Re5 Qd2+/–; 16.Rc1 Rb8 17.Ne4 Bd4 18.Re1 Ba2+/–; 16.Qe2 Bd4 17.Rfe1 c5 18.Rab1 a5+/–; 16.Rb1 Bf5 17.Rb2 Qd3 18.Re1 Rad8+/–; 16.Qa4 Bb6 17.Qc2 Bc4 18.Rfe1 Bd3+/–) 16...Bb4 17.Qc2 Rb8 18.Rfc1 a6+/–.

14.Be5 Be6 15.Re1 A) 15...Rb8 16.Qa4 Bc5 17.Qc6 Bb6 18.Qc2 Qd7+/–; B) 15...Qd7 16.Nc3 (16.a3 Bd6 17.Nc3 c5 18.Rb1 c4+/–; 16.Qa4 Bc5 17.d4 Bb6 18.Nc3 Rad8+/–) 16...Rab8 17.Qa4 Rb7 18.Rab1 Reb8+/–; C) 15...a6 16.Qa4 (16.Qc2 Qd7 17.a3 Bd6 18.Nc3 Bf5+/–; 16.Qe2 Qd7 17.Nc3 a5 18.a3 Bd6+/–; 16.Nc3 Rb8 17.Qa4 Rb6 18.Rab1 Bc3+/–) 16...Bc5 17.Nc3 Bb6 18.d4 Qd7+/–; D) 15...a5 16.Qa4 (16.Nc3 Qd7 17.a3 Bd6 18.Qa4 c5+/–; 16.a3 Bd6 17.Nc3 Qd7 18.Qa4 c5+/–; 16.Qc2 Qd7 17.a3 Bf5 18.Qc1 Bd6+/–) 16...Ra6 17.a3 Bd6 18.d4 Qb8+/–; E) 15...Qd3 16.Nc3 (16.Qc1 Qd7 17.Nc3 Rab8 18.Ne4 Bd5+/–) 16...Rab8 17.Qa4 Qd2 18.Rad1 Qb2+–; F) 15...Re7 16.Qa4 c5 17.a3 Bd2 18.Nd2 Qd2+–; G) 15...Bd6 16.Nc3 (16.Qc2 Qd7 17.Nc3 Rad8 18.Ne4 Bd5+/–; 16.Qf3 c5 17.Nc3 Rb8 18.d3 Qd7+/–) 16...c5 17.Rb1 a6 18.Qc2 c4+/–.

14.Be5 Bf5

15.Qb3 Bd6 16.Qe3 (16.Qc3 Qd7 17.d4 Rab8 18.Rc1 Be4+/–; 16.Re1 Rb8 17.Qg3 Be5 18.fe5 Bb1+/–) 16...Qd7 17.Re1 a6 18.Qg3 Re6+/–.

15.Qc1 Qd7 16.Re1 (16.a3 Bd6 17.Re1 Re6 18.d4 Rae8+/–) 16...Rab8 17.a3 Ba5 18.Nc3 Red8+/–.

15.Nc3 Bd6 (15...Qd3 16.Re1 Re7 17.Qa4 c5 18.Qc6 Rd8+–; 15...Qd7 16.Qa4 a5 17.a3 Bd6 18.Rfe1 Re7+/–; 15...Rb8 16.Re1 Qd7 17.a3 Bc5 18.d4 Bb6+/–) 16.Re1 c5 17.d4 cd4 18.Qd4 Qd7+/–.

15.d4 A) 15...Qd5 16.Qa4 (16.Qb3 Rab8 17.Rc1 Qd7 18.Qa4 Be4+/–; 16.Qh5 Qd7 17.a3 Bd6 18.Re1 Bg6+/–; 16.a3 Bd6 17.Nc3 Qc4 18.Qf3 c5+/–) 16...Reb8 17.Rc1 Be7 18.a3 Rb7+/–; B) 15...Be7 16.Qb3 (16.Nc3 c5 17.dc5 Bc5 18.Nb5 c6+/–) 16...Bd6 17.Nc3 c5 18.Qf7 Be5+/–; C) 15...a6 16.Qa4 (16.Qb3 Bd6 17.Nc3 Qd7 18.Rfe1 c5+/–; 16.Qh5 Qd7 17.a3 Bf8 18.Nc3 c5+/–) 16...Bd6 17.Qc6 Re6 18.Qf3 Qf8+/–; D) 15...a5 16.Qb3 (16.Qf3 Qd7 17.Rc1 Rad8 18.Qb3 Rb8+/–; 16.Qa4 Re6 17.Rc1 Rg6 18.Nc3 c5+/–) 16...Bd6 17.Nc3 c5 18.Qf7 Be5+/–; E) 15...Bd6 16.Nc3 (16.Re1 Bb4 17.Re3 c5 18.Nc3 Be6+/–; 16.Qc1 c5 17.dc5 Be5 18.fe5 Re5+=; 16.Qd2 c5 17.Qa5 Be5 18.de5 Qd4+/–) 16...c5 17.Re1 cd4 18.Qd4 Qd7+/–; F) 15...Bf8 16.Qb3 (16.Nc3 c5 17.d5 Qd7 18.Qh5 c4+/–) 16...Rb8 17.Qa4 c5 18.Qa7 cd4+/–.

15.Re1 A) 15...Rb8 16.Nc3 Kg8 17.a3 Bc5 18.d4 Bb6+/–; B) 15...Bd6 16.Nc3 (16.Qa4 Re6 17.Nc3 Qe8 18.d4 c5+/–; 16.Qf3 Qd7 17.Nc3 Rad8 18.Qg3 Be5+/–) 16...c5 17.d4 cd4 18.Qd4 Qd7+/–; C) 15...Qd3 16.Nc3 Re7 17.Qa4 c5 18.Qc6 Rd8+–; D) 15...Bc5 16.Nc3 Rb8 17.d4 Ba3 18.Qf3 Bb2+/–; E) 15...a5 16.Nc3 Qd7 17.a3 Bf8 18.Qa4 Be7+/–; F) 15...Qd7 16.a3 (16.Nc3 c5 17.a3 Ba5 18.Qe2 Rad8+/–; 16.Qa4 Bc5 17.Rc1 Bb6 18.Qc6 Qc6+=) 16...Bc5 17.Nc3 Rad8 18.d4 Bd6+/–.

15.Qf3 Qd5 16.Qe3 (16.Qg3 Re7 17.Re1 Rf8 18.Qg5 Bc5+=) 16...Bd3 17.Re1 Bb1 18.Rab1 Bd2+/–.

9.Ne5 Nd5

10.Qb3 a5!?= A) 11.Bc4 a4 (11...Be6) 12.Qd3 c6 13.a3 Bc5 14.0–0 Be6=; B) 11.e4 Nc6 12.Bb5 Qg5 13.Qg3 Qg3 14.hg3 Nf6=.

10.Qb3 Qd6 11.Bc4 Re5 12.Be5 Qe5 13.Bd5 Qa1 14.Qb4 Nc6=.

10.Qb3 Bf8 11.e4 Nc6 12.Bb5 Qg5 (12...Bd6 13.Nc6 Re4 14.Kd1 bc6 15.Bc6–/+) 13.0–0 (13.Bc6 bc6 14.Qg3 Qg3 15.hg3 Rb8–+) 13...Ne5 (13...Re5 14.h4 Qh4 15.Be5 Ne5 16.ed5–+) 14.ed5 (14.Be8 Nf4 15.g3=) 14...Nd7+= 15.d4 (15.Na3 Rd8+=) 15...Bd6 (15...Qf4 16.Nc3–/+) 16.Ba3 a6 17.Bd6 cd6 Opening the c–file gets White a lot of play 18.Bd7 Bd7 19.Na3 b5 20.Nc2 Rec8 (20...Rac8 21.Ne3–/+) 21.Ne3 Qf6 (21...Qf4 22.Qa3+=) 22.Qa3 a5 23.Rac1 b4 (23...Re8 24.Rc7 b4 25.Qb2+=) 24.Qd3 (24.Rc8 Bc8 25.Qa4 Qd8=) 24...g6 (24...Qf4 25.Rfe1+=) 25.Rc8= Rc8 26.Qa6 Qd4 (26...Kg7 27.Rd1 Qd8 28.Qd6+=) 27.Qb7 Rd8 28.Qc7 Qh4 (28...Qf6 29.Qa5 h6 30.Qb4+/–) 29.Qa5 (29.Qd6? Bb5 30.Qb6 Bf1–+) 29...Rc8 30.Qb6 Qf4 31.g3 Qf6 (31...Qf3 32.Qd6 Bh3 33.Qb4 Bf1 34.Nf1 Qd5 35.a3–/+) 32.Qb4 Bh3 (32...Ra8 33.Qb3+/–) 33.Rb1+/– Qf3 (better is 33...h6!?+/–) 34.Qd6+– Rc2 Do you see the mate threat? 35.Rb8 (35.Nc2 Deflection from g2 35...Qg2) 35...Kg7 36.Qf8 Kf6 37.Rb6 Kg5 38.Qd8 ½–½. Dopper,Johan – Veldhuis,Paul, corr NED H, 1993.

10.Bc4 c6 A) 11.Qb3 Ba5 (11...a5 12.a3 a4 13.Qd3 Bc5 14.0–0=; 11...Qd6 12.Nd3 Na6 13.0–0 b5 14.Bd5=) 12.e4 Nd7 13.f4 Ne5 14.Be5–/+; B) 11.Qf3 Be6 (11...f6) 12.e4 Nd7 13.a3 Bd6 14.d4+=; C) 11.Qh5 Be6 12.0–0 Nd7 13.d3 Ne5 14.Be5+=; D) 11.0–0 Bd6 (11...Nd7 12.Nd7 Qd7 13.d4 Qe7 14.Qb3=; 11...Be6 12.e4 Nf4 13.Be6 Re6 14.Qg4=; 11...b5 12.Bb3 Bd6 13.f4 Be6 14.Qf3=) 12.d4 Be6 13.e4 Nf4 14.Be6=.

10.Bc4 Qd6?? 11.Qb3?? (better is 11.Nf7!? Qd7 12.Ne5 Re5 13.Be5+–) 11...Be6 (better is 11...Re5!? 12.Be5 Qe5 13.Bd5 Qa1 14.Qb4 Nc6=) 12.a3+/– Bc5 13.d4 (13.Qb7!? Nb6 14.Be6 Qe6 15.Nd3+= (worse is 15.Qc7 Bd6 16.Qf7 Qf7 17.Nf7 Kf7=)) 13...Bb6= 14.0–0 f6 15.e4 Nf4 (worse is 15...fe5 16.ed5 Bf5 17.de5 Re5 18.Be5 Qe5 19.Nc3+–) 16.Be6 (16.Nf3 Nc6 17.Be6 Ne6= (worse is 17...Qe6 18.Qe6 Re6 19.d5 Re4 20.dc6+/–)) 16...Qe6+= 17.d5 Qe7 18.Nf3 (18.d6 Qe6 19.Qe6 Re6+=) 18...Ne2 (better is 18...Qe4!? 19.Nc3 Qg6–/+) 19.Kh1+= Qe4 20.Nbd2 Qg6 (better is 20...Qg4!?=) 21.Qc4 (21.Rae1 Nf4 22.d6 Kf8+/–) 21...Na6 (21...Ba5 22.Rfe1 Bd2 23.Nd2 Qh5+–) 22.Rae1+– Rad8 23.Re2 Re2 24.Qe2 Qf7 25.Kg1 Qd5 26.Qc4 (26.Re1 c6+–) 26...c6 (26...Qc4 27.Nc4 Bc5 28.Rb1+/–) 27.Qd5 (27.Qg4 Qf7+–) 27...Rd5+/– 28.Nc4 Bc7 29.Re1 b5 30.Ne3 Rd3 (30...Rd7 31.Kf1+/–) 31.Rd1 (31.Nf5 c5+/–) 31...Rb3 Black intends b4 (31...Rd1 32.Nd1 c5 33.Kf1+=) 32.Bc1 c5 Black prepares b4 33.Nd2 (33.Nd5!? Kf8 34.Kf1+/–) 33...Rd3+= 34.Ne4 Rd1 35.Nd1 b4 36.ab4 cb4 37.Kf1 f5 (worse is 37...Bh2 38.g3 Nc7 39.Nb2+/–) 38.Ng3 g6 Black gets in control 39.Ke2 Nc5 40.Bb2 (better is 40.Be3!? Bd6 41.Nb2+=) 40...a5+= 41.Kd2 Kf7 42.Bd4 Nb3 43.Kd3 a4 44.Bb2 (44.Bh8 Bd6+=) 44...a3–/+ 45.Bh8 a2 46.Kc4 a1Q 47.Ba1 Na1 48.Nf1 b3 49.g3 (49.Nd2 Bh2 50.Nb2 Bd6–/+) 49...Be5 (49...Ba5 50.Nfe3–+) 50.Nd2–/+ b2 51.f4 Bf6 52.Ne3 (52.Kb4!?–/+) 52...Ke6–+ 53.Nd5 Bd8 54.Nb1 Ba5 (54...Ba5 55.Nb4 Bb4 56.Kb4 Nc2 57.Kc3 Ne3–/+; 54...h6!?–+) 0–1. Seifert,J – Mohrenweiser,Uwe, corr DDR–ch M930, 1989.

10.Bc4 Nd7?? 11.Nf7!+– Kf7 Decoy to f7 12.Bd5 Kf8 13.Qh5 Threatening mate... how? 13...Ke7 14.Bg7 Kd6 (14...c6 15.Bf7 Rg8 16.Bg8 Qg8 17.Qh4 Ke8 18.Qb4 Qg7 19.Qe4 Kf7 20.Qf3 Nf6 21.Nc3+–) 15.Bf7 (15.Bf7 Re5 16.Qh6 Kc5 17.Na3 Ba3 18.d4 Kb5 19.de5 Bb4 20.Ke2+–) 1–0. Rosenhahn,Erwin – Lus,Damian, corr 3GMM–51, 1995.

10.Be2 Nd7 11.Nf3 Nc5 12.0–0 Ne4 (12...Be6 13.Nd4+=) 13.Bc4 (13.d3 Nef6=) 13...Bg4 14.a3 Be7 15.d3 Ng5 16.Nbd2 Nb6 17.Rc1 (17.Bb5 c6 18.Bc4 Nc4 19.dc4 Qa5–/+) 17...Nc4 18.Rc4 Bh5 19.Qe2 c5 20.Rfc1 b5 21.R4c2 (21.R4c3 Bd6+=) 21...Qd7 (21...Nf3 22.Nf3 Bf3 23.gf3+=) 22.Nf1 (22.Be5!?+=) 22...Rad8–/+ 23.Rd2 (23.Rc3 Nf3 24.gf3 Bg6–/+) 23...Qb7 (23...Qd5 24.e4 Nf3 25.gf3 Qg5 26.Kh1–+) 24.e4–/+ Bf3 (24...Bd6 25.Ne3–/+) 25.gf3 Qb8 (25...Nh3 26.Kh1–/+) 26.Rcd1 (26.Ne3 Qf4 27.Kg2 Bd6–/+) 26...Nh3 27.Kh1 Qb6 (27...Nf4 28.Qe3–/+) 28.Ng3 (28.d4!?+=) 28...Bg5 29.Rc2 Nf4 30.Qf1 h6 (30...a6 31.Nf5 g6 32.Ng7–+) 31.Bc1 (31.Nf5 g6 32.Ng7 Re7–/+) 31...Ne6 (31...Rd4 32.h4+/–) 32.Be3 Nd4 33.Bd4 White gets decisive kings attack 33...cd4 (33...Rd4 34.Nf5 Rd7 35.Qg2–/+) 34.f4 (34.Rb1!?+=) 34...Bf4–/+ 35.Nh5 Bd6 36.Qg2 Threatening mate: Qxg7 36...Bf8 37.Rg1 g6 38.f4 (better is 38.Qf3!? Be7 39.a4–/+) 38...Ba3–+ 39.f5 Kh7 (better is 39...a5–+) 40.e5 Kh8?? (40...Re5 41.Rc6) 41.Rc6–/+ Qb7 42.fg6 Threatening mate... how? 42...Re6? (42...fg6 43.Qg6 Rf8 44.Qh6 Qh7 45.Qh7 Kh7 46.Rg7 Kh8 47.Rh6) 43.g7+– Kh7?? (better is 43...Kg8 44.Nf6 Rf6 45.ef6 a5+/–) 44.Re6 1–0. Van Rooijen,T – Van den Berg,J, corr NLD BV1, 1991.

10.Be2 Be6 11.0–0 Nd7 12.Nf3 c5 13.d3 Qe7 14.Qc2 Rac8 15.Nc3 N7f6 (15...Bc3 16.Bc3 Nc3 17.Qc3+=) 16.Rab1 (16.Nd5 Bd5 17.a3 Ba5=) 16...a6 17.Nd5 Nd5 18.a3 Ba5 19.Ba1 b5 Black prepares c4 20.Rfc1 f6 21.Qd1 (21.Nd2 Bf5 22.Nb3 Ne3–/+) 21...Red8 22.a4 Nb4 Black prepares the advance c4 (22...Bb4 23.Bb2+=) 23.Bc3= c4 (23...Bf5 24.Qb3 Qf7 25.Qa3=) 24.Bb4 (24.d4 Bf5 25.Rb2 Nd3 26.Bd3 Bc3 27.Rc3 cd3 28.Rc8 Rc8 29.ab5 Qa3–+) 24...Bb4 25.Nd4 Ba3 26.Rc2 Bc5 (better is 26...ba4!? 27.dc4 Bc5+=) 27.Ne6+/– Qe6 28.d4 Qe8 29.ab5 ab5 30.Rcb2 c3 31.Bb5 Qe7 (31...Qe6 32.Qb3 Qb3 33.Rb3 g5 34.Rc3 Bd6 35.Bc4 Kf8+–) 32.Qb3+– Kh8 33.Rc2 (33.Qc3?! Ba3 34.Bc4 Bb2 35.Rb2 Rc6+=) 33...Qe4? (33...Bd6 34.Rc3 Rc3 35.Qc3 f5+–) 34.dc5 Rc5 35.Rbc1 (better is 35.Be2+–) 35...Qc2 (35...Qb7 36.Ba4 Qb3 37.Bb3 Rdc8+–) 36.Rc2 Rd1 (36...Rb5 37.Qb5 Rd1 38.Qf1 Rf1 39.Kf1+–) 37.Bf1 (37.Bf1 h6 38.Rc3 Rc3 39.Qc3+–) 1–0. Moiseev,Danila (1850) – Chetrari,Nikita (1905), European School Championships, 2014.

10.Nf3 a6 A) 11.a3 Bd6 (11...Be7 12.Qc2 Bf6 13.d4 Bh4 14.g3=; 11...Bc5 12.Qc2 Bd6 13.Bd3 Nf6 14.Ng5=) 12.Qb3 Nf6 13.Bc4 Qe7 14.Ng5=; B) 11.Qc2 Nc6 (11...Bg4 12.Bd3 h6 13.Bh7 Kh8 14.Be4=; 11...Be6 12.Bd3 g6 13.0–0 Nc6 14.Nc3=; 11...Nd7 12.Nc3 Ne5 13.Be2 Nf3 14.Bf3=; 11...Bf8 12.a3 Nc6 13.Bd3 Ncb4 14.Bh7=; 11...Kh8 12.Bc4 Nc6 13.a3 Be7 14.Nc3=; 11...h6 12.Bc4 Nc6 13.a3 Be7 14.0–0=) 12.Bd3 h6 13.Bh7 Kh8 14.Be4=.

10.Nf3 c6 A) 11.Qc2 Bg4 (11...Nd7 12.Nc3 Ne5 13.Ne5 Re5 14.Bd3+=; 11...Be6 12.Bd3 h6 13.Nd4 Bg4 14.0–0=; 11...Bd6 12.Bd3 h6 13.0–0 Bg4 14.Be4+=; 11...Nf6 12.Bc4 Be6 13.Be6 fe6 14.a3=; 11...h6 12.Nc3 Be6 13.Nd4 Nf4 14.Ne6=; 11...Bf8 12.a3 Bg4 13.Bd3 g6 14.Be2+=) 12.Bd3 h6 13.Ne5 Be6 14.Bh7+=; B) 11.Be2 Nd7 (11...Bd6 12.0–0 Nd7 13.d3 N7b6 14.Nbd2=; 11...Bg4 12.Nc3 Bf3 13.Bf3 Nf4 14.0–0=; 11...Qe7 12.Nc3 Nc3 13.dc3 Bd6 14.Qc2+=; 11...b6 12.0–0 Bd6 13.Nc3 Nc3 14.Bc3=; 11...Bc5 12.0–0 Be6 13.Nd4 Bd4 14.Bd4+=; 11...Qd6 12.Nc3 Be6 13.a3 Ba5 14.Qc2=) 12.0–0 N7f6 13.Nc3 Bd6 14.Nd5+=; C) 11.Bc4 b5 (11...Nb6 12.Be2 Be6 13.0–0 N8d7 14.Nd4+=; 11...Be6 12.Qc2 Nd7 13.0–0 Bg4 14.Bd5+=; 11...Nd7 12.Bd5 cd5 13.0–0 Bd6 14.Nc3+=) 12.Be2 Bd6 13.0–0 Bf5 14.d3+=; D) 11.a3 Bd6 (11...Be7 12.Qc2 Bg4 13.Bd3 h6 14.Ne5=) 12.Nc3 Nc3 13.dc3 Bf5 14.c4+=; E) 11.Qb3 Nd7 12.Nc3 Nc5 13.Qc2 Nf4 14.d4+=; F) 11.Nc3 Nf4 12.Qb3 Qe7 13.Ne5 Be6 14.Qc2+=.

10.Nf3 Nc6 A) 11.Bb5 Bd7 (11...Qd6 12.a3 Bc5 13.Qc2 a6 14.Bc6=; 11...Nde7 12.a3 Bd6 13.Qc2 Bg4 14.Ng5=) 12.0–0 Bd6 13.d3 a6 14.Bc4+=; B) 11.a3 Bd6 12.Nc3 Nc3 13.dc3 Qf6 14.Qb3+=; C) 11.Bc4 Be6 (11...Nb6 12.Be2 Be6 13.0–0 Nc4 14.Bc3+=) 12.Bb5 Nde7 13.0–0 a6 14.Be2+=; D) 11.Qc2 Nf4 12.a3 Bd6 13.Nc3 Bg4 14.Nb5+=; E) 11.Nc3 Nf4 12.a3 Ba5 13.Qa4 Nd3 14.Bd3+=; F) 11.Be2 a6 (11...Qe7 12.0–0 Bg4 13.Nc3 Rad8 14.Nd5+=; 11...Rb8 12.0–0 a6 13.Nc3 Be6 14.Ne4+=; 11...Bf5 12.0–0 Qd7 13.a3 Bd6 14.Nc3+=; 11...Be6 12.0–0 Bd6 13.d4 Qf6 14.Bb5+=; 11...Re7 12.Qc2 h6 13.0–0 Bd6 14.a3=; 11...Bd6 12.0–0 Be6 13.d4 Qf6 14.Bb5+=) 12.0–0 Be6 13.Nc3 Qd7 14.a3+=.

10.Nf3 Bd6 A) 11.Qb3 c6 (11...Nf4 12.Bc4 Ne6 13.Qc3 Qe7 14.0–0=; 11...Be6 12.Bc4 Nb6 13.Be6 Re6 14.0–0=; 11...Nb6 12.Bd3 N8d7 13.Qc2 Nf8 14.0–0=) 12.Bc4 Na6 13.Ba3 Ba3 14.Bd5+=; B) 11.Bc4 Nb6 12.Bd3 h6 13.Qc2 Nc6 14.0–0+=; C) 11.Be2 Bg4 (11...c6 12.Nc3 Nc3 13.Bc3 Nd7 14.Qc2=; 11...Bf5 12.Qb3 Nb6 13.Qc3 Bf8 14.0–0+=; 11...Nb6 12.Qc2 N8d7 13.Nc3 Nf6 14.Nb5=; 11...a6 12.Qb3 Nb6 13.Qc3 Bf8 14.Qc2+=; 11...Nb4 12.a3 Nd5 13.Qb3 Nb6 14.Qc3=; 11...Nc6 12.0–0 Be6 13.d4 Qf6 14.Bb5+=) 12.Qb3 Nb6 13.0–0 Nc6 14.Rc1+=.

10.Nf3 Nd7 A) 11.Qc2 Nf4 12.Nc3 Ne5 13.Ne5 Re5 14.g3+=; B) 11.Nc3 Nc5 (11...N7b6 12.Be2 Bf5 13.0–0 c6 14.a4=; 11...Nf4 12.a3 Bd6 13.Nb5 Bc5 14.Qa4=; 11...N5b6 12.Be2 Nc5 13.Qc2 Bg4 14.0–0=; 11...N5f6 12.Be2 Nb6 13.0–0 Bf5 14.d3=; 11...Nc3 12.Bc3 Bd6 13.Qc2 Nc5 14.Rb1=; 11...N7f6 12.Qb3 Be6 13.Bc4 Bc3 14.Bc3=) 12.Nd5 Qd5 13.a3 Ba5 14.Bc3+=; C) 11.Be2 N7f6 (11...N7b6 12.0–0 Bd6 13.Nc3 c6 14.Rb1+=; 11...c6 12.0–0 N7b6 13.d3 Qe7 14.Qc2+=; 11...Bd6 12.0–0 N7b6 13.Nc3 c6 14.Rc1+=; 11...Qe7 12.0–0 N7f6 13.Nc3 Bf5 14.Nd4+=; 11...Nc5 12.0–0 Bg4 13.a3 Ba5 14.Qc2=; 11...a6 12.0–0 N7f6 13.Nc3 Bd6 14.Nd5=) 12.0–0 c6 13.Nc3 Bg4 14.Qc2+=; D) 11.Bb5 c6 (11...a6 12.Be2 N7f6 13.0–0 Bd6 14.Nc3+=; 11...Bd6 12.0–0 c6 13.Be2 N7f6 14.Nc3+=) 12.Be2 N7f6 13.0–0 Bd6 14.Nc3+=; E) 11.Bc4 N7b6 12.Be2 Be6 13.0–0 Bd6 14.d3+=; F) 11.a3 Bd6 (11...Be7 12.Be2 N7f6 13.0–0 c6 14.Nc3=; 11...Bc5 12.Be2 N7f6 13.0–0 c6 14.Qc2=; 11...Bf8 12.Nc3 Nc3 13.Bc3 Nc5 14.Qc2+=) 12.Be2 Qe7 13.0–0 N7b6 14.Qc2+=.

10.Nf3 Bf5–/+ A) 11.a3 Bd6 (11...Be7 12.Be2 Nc6 13.0–0 Qd6 14.Nc3+=; 11...Bc5 12.Qb3 Bb6 13.Bc4 Be6 14.0–0=) 12.Qb3 Nb6 13.Be2 Nc6 14.0–0+=; B) 11.Nd4 Be4 (11...Bg6 12.Qb3 c5 13.Nf3 Be4 14.Nc3+=) 12.a3 Bd6 13.d3 Bg6 14.Qb3+=; C) 11.Nc3 Nf4 12.a3 Bd6 13.Nb5 Nc6 14.Qb3+=; D) 11.Bb5 c6 12.Be2 Bd6 13.0–0 Nd7 14.Nc3+=; E) 11.Bc4 Nb6 12.Qb3 Nc4 13.Qb4 Nb2 14.Qb2–/+; F) 11.Qb3 Nc6 12.a3 Be7 13.Qb7 Na5 14.Qb5–/+; G) 11.Be2 a6 (11...Qd7 12.Nd4 Nc6 13.Bb5 Nf4 14.0–0=; 11...Nc6 12.0–0 Qd7 13.a3 Bd6 14.Nc3+=; 11...a5 12.Nd4 Bg6 13.0–0 a4 14.a3=; 11...Re7 12.0–0 Nc6 13.Bb5 Qd6 14.a3=; 11...Bd6 12.Qb3 Nb6 13.Qc3 Bf8 14.0–0+=; 11...c6 12.Nc3 Nc3 13.Bc3 Bd6 14.d3=) 12.a3 Bc5 13.Nc3 Nc3 14.Bc3+=.

10.Nf3 Bg4 A) 11.Bc4 Nc6 (11...Be6 12.a3 Bd6 13.Qb3 Nb6 14.Be6=; 11...Nb6 12.Be2 Nc6 13.0–0 Qd7 14.d4+=) 12.0–0 Nb6 13.Bb5 Re6 14.h3+=; B) 11.a3 Bd6 (11...Be7 12.Qb3 Nb6 13.d4 Bd6 14.Bd3+=; 11...Bf8 12.Be2 Nc6 13.Nc3 Nc3 14.Bc3+=) 12.Qb3 Nb6 13.Qc3 Bf8 14.Qc2+=; C) 11.Nc3 Nc6 12.Bb5 Qd6 13.a3 Ba5 14.h3+=; D) 11.Qc2 Bf3 (11...Nd7 12.Be2 Bd6 13.Nc3 Nb4 14.Qb1+=; 11...Nc6 12.a3 Bd6 13.Bd3 Nf6 14.Ng5+=; 11...c6 12.Bd3 h6 13.Ne5 Be6 14.0–0+=) 12.gf3 Qh4 13.Nc3 Bc3 14.Bc3+=; E) 11.Be2 a6 (11...Nc6 12.0–0 Qe7 13.Nc3 Rad8 14.Nd5+=; 11...c6 12.Nc3 Bf3 13.Bf3 Nf4 14.0–0=; 11...Qe7 12.Nc3 Rd8 13.Qb3 c6 14.0–0=; 11...Nd7 12.0–0 N7b6 13.Nc3 c6 14.Qc2+=; 11...Bf5 12.0–0 Nc6 13.Bb5 Nde7 14.a3+=; 11...Qd7 12.Nc3 Nc6 13.Nd5 Qd5 14.a3+=) 12.a3 Bd6 13.Qb3 Nb6 14.Qc3+=; F) 11.Bb5 c6 12.Be2 Nd7 13.0–0 Qe7 14.Nd4+=; G) 11.Qb3 Nc6 (11...a5 12.a3 a4 13.Qc2 Bd6 14.Nc3=) 12.a3 Bf3 13.ab4 Be4 14.b5=.

10.Qb3 Be7

11.Nc3 c6 12.Bc4 Bf6 13.d4 Be5 14.de5 Be6+=.

11.Nc3 Bf6 12.Nf7 Kf7 13.Nd5 Be6 14.Bf6 Qd5+/–.

11.Bc4 Be6? 12.Qb7 Nb6 13.Be6 fe6 14.d3+/–.

11.Bc4 Be6? 12.Qb7 Bf6? 13.0–0?? Nb6+= 14.Be6 Re6 15.f4 c6?? (15...Be5 16.Be5 (16.fe5?! Nc6=) 16...c5 17.Rc1+=) 16.Bd4 (better is 16.Qf7 Kh8 17.Qe6 Be5 18.fe5+–) 16...N8d7? (better is 16...Be5!? 17.Bb6 ab6 18.fe5 Nd7= 19.d4 f6 20.Nc3 fe5=) 17.Nc6+– Qe8 18.Bf6 (better is 18.Na3+–) 18...Nc5? (better is 18...Nf6 19.Ne5 Nbd5+/–) 19.Ne7+– Kh8 (19...Kf8 20.Bg7 Kg7 21.Nf5 Kh8 22.Qf3 Rc8 23.Nc3+–) 20.Bg7 Kg7 21.Nf5 Kh8 22.Qf3 Rd8 (22...Rg6 23.Nd4+–) 23.Nd4 Red6 24.Nc3 Nc4 25.Rf2 (25.Qe2 Nb2+–) 25...a6 26.Rb1 Ne6 27.Qe2 Nd4 28.Qc4 (28.ed4?! Rd4 29.Rc1 Qd7+/–) 28...Nc2 (28...Rc6 29.Qb4 Ne6 30.Qb2+–) 29.Qe4 (29.Qe4 Qe4 30.Ne4+–) 1–0. Lohr – Gedigk,Detlef, corr SOK–88–18, 1988.

11.Bc4 Be6? 12.Qb7 Bf6? 13.Qa8 Nb6 14.Qa7 Nc4 15.Nc4 Bc4 16.Bf6 Qf6 17.Nc3+–.

11.Bc4 Be6? 12.Nc3 c6 13.Qb7+– Nc7 (13...Nb6 14.Be6 fe6 15.Rb1 c5 16.Ba3+–) 14.Be6 fe6 15.Rc1 a5 16.0–0+–.

10.Bc4 Be6

11.0–0 c6 12.e4 Nf4 13.Be6 Re6 14.Qg4=.

11.0–0 Bd6 12.Qf3 Nd7 13.d4 Be5 14.Bd5=.

11.Qb3 a5 12.a3 a4 13.Qd3 Ba5 (13...Be7 14.Nc3 Nc3 15.Be6 fe6 16.Qc3=) 14.f4 (14.Nc3 Bc3 15.dc3 Qd6+=) 14...Ne3+= 15.Be6 Qd3 16.Bf7 (16.Nd3? Nc2 (16...fe6?! 17.Ke2 Nc4 18.Ra2–/+) 17.Kd1 Na1 18.Bf7 Kf7 19.Ba1 Nc6–+) 16...Kf8 17.Nd3 Kf7 18.Kf2 (18.Ne5 Ke6 19.Kf2 Nc2=) 18...Nc4 19.Ne5 (19.Rc1 Nb2 20.Nb2 b5+=) 19...Ne5–/+ 20.fe5 (20.Be5 Nc6–/+) 20...Nc6 21.Re1 Rad8 22.Re2 (22.Re4 Bd2 23.Kf3 Ke6–+) 22...Bb6 (22...Rd5 23.Nc3 Rde5 24.Rae1 Bb6 25.Kg3–+) 23.Kg3 (23.Kf1 Bd4 24.Nc3 Be5 25.Na4 Bb2 26.Nb2 Re2 27.Ke2 Nd4 28.Kf1 Nb3–/+) 23...Rd3 24.Kf4 Ke6 25.Nc3 (25.Kg5!?–+) 25...Rf8 26.Kg4 Ne5 27.Kh4?? (27.Re5 Ke5 28.Re1 Kd6 29.Na4 Rd2 30.Nb6 cb6 31.Be5 Kc6 32.g3–+) 27...Rf4 28.Kh5 Rf5 29.Kh4 g6 30.g4 (30.Re5 Re5 31.Rb1–+) 30...g5 31.Kh5 Rh3 0–1. Manninen,Juha – Pagni,Carlo Alberto, corr ICCF TT–4–90 SF, 1994.

11.Qb3 a5 12.a3 a4 13.Qd3 Bd6 (13...Be7!?=) 14.Nf7+= Bf7 (14...Kf7 15.Bd5) 15.Bd5+/– Bd5 16.Qd5 Kh8 17.Qb7 Nd7 18.Qc6 Nc5 19.0–0 Qh4 (19...Ra6!? 20.Qf3 Nd3+/–) 20.f4+– Rab8 21.Ra2 (21.Nc3 Red8 22.Rab1 Rb6+–) 21...Qe7 (21...Re6 22.Be5+/–) 22.Bd4+– Rb6 23.Qd5 Rb3 24.Nc3 Reb8 25.Be5 Be5 26.fe5 Rd8 27.Qf7 Qf7 28.Rf7 (28.Rf7 Rc8 29.Rf4+–) 1–0. Hallila,Erkki – Tocklin,Tomi, corr Finland, 1992.

11.Qb3 a5 12.a3 a4 13.Qd3 Bf8 14.Nc3=.

11.Qb3 c5 12.a3 b5 13.Bb5 Nc3 14.Bc4=.

11.e4 Nf4 12.Be6 Re6 =+.

11.Qf3 c6 12.e4 Nd7 13.Bb3 Ne5 14.Be5–/+.

11.0–0 Nd7

12.Qb3 Nc5 13.Qc2 f6 14.d4=.

12.Nd7 Qd7

13.d4 Bd6 14.Qb3+=.

13.Qf3 Bd6 14.Nc3+=.

13.d4 c6

14.Qb3+=.

14.a3 Ba5

15.a4 A) 15...Bc7 16.Qb3 (16.Ba3 Ne3 17.Be6 Bh2 18.Kh1 Qe6–/+; 16.Qh5 Nf6 17.Be6 Qe6 18.Qc5 Ng4–/+; 16.e4 Qd6 17.e5 Qe7 18.Qb3 Qg5+=; 16.Nd2 Qd6 17.g3 Ba5 18.Ba3 Qd8+=; 16.Na3 Qe7 17.Qh5 Nf6 18.Qh4 Qb4+=) 16...Qd6 17.g3 Nb4 18.Nd2 a5=; B) 15...Bf5 16.Nd2 (16.Ba3 Rad8 17.Qh5 Bg6 18.Qg5 Re4+=; 16.Qb3 Rad8 17.Nc3 Nb6 18.Rfd1 Nc4+=; 16.Qc1 Qd6 17.Nc3 Bc7 18.g3 Ba5+=; 16.Na3 Rad8 17.Rc1 Be4 18.Qb3 b6+=; 16.Bc1 Rad8 17.Qh5 Bg6 18.Qf3 Be4+=; 16.Qe2 Bc7 17.Nc3 Bg4 18.Qd3 Qd6+=) 16...Nb6 17.Be2 Rad8 18.Nc4 Nc4=; C) 15...Qe7 16.Qd3 (16.Ba3 Qg5 17.Qf3 Rad8 18.Bc5 b6+=; 16.Na3 Bc7 17.Qh5 Nf6 18.Qh4 Qb4+=; 16.Qc2 Qg5 17.Rc1 Rad8 18.Qb3 Nb6+=; 16.Bd3 Qg5 17.Na3 Bc7 18.f4 Qh4+=; 16.Qe2 Qh4 17.Rc1 Rad8 18.Nc3 Nf6+=; 16.Qb3 Qg5 17.Rc1 Rad8 18.Nc3 Bh3+=) 16...Rad8 17.Rc1 Bc7 18.Nd2 Bg4=; D) 15...Nf6 16.Qc2 (16.Qb3 Bc4 17.Qc4 Bc7 18.Nd2 Nd5+=; 16.Qd3 Rad8 17.Rc1 Ng4 18.Be6 Qe6+=; 16.Be6 Qe6 17.Qf3 Ne4 18.Qh5 b6+=; 16.Bd3 Bf5 17.Nc3 Bd3 18.Qd3 Rad8+=; 16.Nd2 Bd2 17.Be6 Qe6 18.Qd2 Ne4=; 16.Na3 Bc7 17.Qb3 Qd6 18.g3 Rab8+=) 16...Bc4 17.Qc4 Rad8 18.Nc3 Bc7=; E) 15...Rad8 16.Qb3 (16.Qh5 Bb4 17.Bd3 Nf6 18.Qg5 h6+=; 16.Na3 Bf5 17.Rc1 Bc7 18.Qb3 Re6+=; 16.Qc1 a6 17.Ba3 Nb6 18.Be2 Qd5+=; 16.Qe2 Bc7 17.Ba3 Bf5 18.Qb2 Bb8+=; 16.Qc2 Nb4 17.Qb3 Bc4 18.Qc4 Qd6+=; 16.Bd3 Bf5 17.Bf5 Qf5 18.Qb3 Bc7+=) 16...Bc7 17.Ba3 a6 18.Nc3 Nc3=; F) 15...Rac8 16.Qb3 (16.Na3 Rcd8 17.Rc1 Bc7 18.Qb3 Qd6+=; 16.Qe2 Bg4 17.Qc2 Bf5 18.Qb3 Nb6+=; 16.Bd3 Nb4 17.Bh7 Kh7 18.Qh5 Kg8 19.Qa5+=; 16.Bc1 Bc7 17.Nd2 Qd6 18.g3 Rcd8+=; 16.Qc1 Bc7 17.Nd2 Rcd8 18.Nf3 a5+=; 16.Qc2 Bf5 17.Qb3 Nb6 18.Bd3 Bd3+=) 16...Rb8 17.e4 Nb6 18.Be6 Re6=; G) 15...Rab8 16.e4 (16.Qe2 Bc7 17.Qh5 Nf6 18.Be6 Qe6+=; 16.Qc2 Bf5 17.Qb3 Rbd8 18.Nc3 Nb6+=; 16.Bd3 Bg4 17.Qb3 Bc7 18.Ba3 Bf5+=; 16.Qc1 Rbd8 17.e4 Nc7 18.Be6 Ne6+=; 16.Qh5 Bc7 17.Bd3 f5 18.Nc3 Nf6+=; 16.Qd3 Bc7 17.Nd2 Nb4 18.Qb3 Bc4+=) 16...Nf4 17.d5 cd5 18.Bb5 Qc7+=.

15.Bb3 A) 15...Bc7 16.Bc2 (16.e4 Nf4 17.Be6 Ne6 18.d5 cd5–/+; 16.Nd2 Qd6 17.Qh5 Nf6 18.Qh4 Ng4+=; 16.Qh5 Nf6 17.Be6 Qe6 18.Qg5 h6+=; 16.Nc3 Qd6 17.g3 Nf6 18.Rb1 Rad8+=; 16.Qd3 Bf5 17.Qd1 Bg4 18.Qc2 Qe6+=) 16...Qd8 17.Nd2 Qh4 18.Nf3 Qh6+=; B) 15...Bg4 16.Qc2 (16.Qd3 Bf5 17.Qe2 Bc7 18.Nc3 Nf4+=) 16...Bf5 17.Qc5 Bb6 18.Qc4 Bc7+=.

15.Qc2 A) 15...Qd6 16.Bd3 Bc7 17.g3 h6 18.Nc3 Rac8=; B) 15...Bc7 16.Nd2 Rad8 17.Bd3 Nf6 18.Rfc1 Qd5=; C) 15...Nf6 16.Bd3 Bc7 17.e4 Nh5 18.e5 h6=; D) 15...Rad8 16.Rc1 (16.Bd3 f5 17.Qa4 Bb6 18.Nc3 f4=) 16...Bf5 17.Qa4 Qc7 18.Bd5 Rd5=; E) 15...Bf5 16.Qd1 (16.Qe2 Be4 17.Qh5 Re6 18.Qe2 Rae8–/+; 16.Qb3 Bc7 17.Nd2 Qd6 18.g3 Ba5+=; 16.Qc1 Qd6 17.Nd2 Bc7 18.g3 Rad8+=; 16.Bd3 Bd3 17.Qd3 Rad8 18.Nc3 Bc7+=; 16.Qa4 Bc7 17.Qb3 Nb6 18.Nd2 Nc4+=) 16...Rab8 17.Nd2 b5 18.Bd5 cd5+=.

15.Nd2 Bd2 16.Bd5 Bd5 17.Qd2 Qe6 (17...Bg2 18.Kg2 Qg4 19.Kh1 Qf3 20.Kg1–+) 18.Qc2 f5–/+.

15.Bd3 A) 15...Bc7 16.Nd2 (16.Qh5 Nf6 17.Qg5 h6 18.Qh4 Bf5–/+; 16.Nc3 Bf5 17.Nd5 Qd5 18.Bf5 Qf5=; 16.Qc2 Qd6 17.g3 Nf6 18.Nc3 Rad8=; 16.Re1 Qd6 17.Qh5 Nf6 18.Qh4 Rad8=) 16...f5 17.Qc2 Qf7 18.Nf3 Rad8=; B) 15...Rad8 16.Qa4 Bb6 17.Qc2 f5 18.Nd2 Bc7=; C) 15...h6 16.Qc2 Rad8 17.Nc3 Bc3 18.Bc3 c5=; D) 15...Nf6 16.Nc3 (16.Nd2 Bf5 17.Bf5 Qf5 18.Rc1 Bc7=; 16.Qc2 Rad8 17.Nd2 Bc7 18.Rfc1 Qd5=; 16.Bc3 Bc7 17.Nd2 Bd5 18.Nf3 Rad8+=; 16.Qa4 Bc7 17.Nc3 Ng4 18.g3 Nf6=; 16.Qe2 Bc7 17.Nc3 Qd6 18.f4 Qe7+=; 16.Qc1 Bc7 17.Nc3 Bf5 18.Bf5 Qf5+=) 16...Bc7 17.Qc2 Qd6 18.g3 Rad8=; E) 15...f5 16.Qa4 (16.Nd2 Bc7 17.Qc2 Qf7 18.Rab1 Qh5=; 16.Qh5 Rad8 17.Rc1 Bc7 18.Nc3 Nf6+=; 16.Qe2 Rad8 17.Rc1 Bc7 18.Nc3 Qd6=; 16.Qc2 Bc7 17.Nc3 Rad8 18.Rfb1 Qd6=; 16.Qf3 Rad8 17.Rc1 f4 18.Qh5 g6+=) 16...Bc7 17.Nd2 Re7 18.Nf3 a6=; F) 15...Bf5 16.Bf5 (16.Bc4 Qd6 17.Qh5 Bg6 18.Qh3 Rad8+=; 16.Qc2 Bd3 17.Qd3 Rad8 18.Nc3 Bc7+=; 16.Qb3 Bd3 17.Qd3 Rad8 18.Nc3 Bc7+=; 16.Bc2 Bc7 17.Bf5 Qf5 18.Nc3 Rad8+=; 16.Ra2 Bd3 17.Qd3 Rad8 18.Rc1 Bc7+=; 16.h3 Bd3 17.Qd3 Bc7 18.Nd2 Rad8+=) 16...Qf5 17.Qb3 Bc7 18.Qb7 Qg6=.

15.Qe2 A) 15...Bg4 16.Qc2 (16.Qd3 Bf5 17.Qd1 Rac8 18.Nd2 b5–/+) 16...Bf5 17.Qd1 Qd6 18.Qh5 Bg6+=; B) 15...Rad8 16.Qc2 (16.Qh5 Bc7 17.Bd3 Nf6 18.Qg5 h6+=; 16.Rc1 Bc7 17.Bd3 Bf5 18.Bf5 Qf5+=; 16.Bd3 Bf5 17.Bf5 Qf5 18.Qc4 Bc7+=; 16.Qd1 Ne3 17.Be6 Nd1 18.Bd7 Re1–/+; 16.Qf3 Bc7 17.Qh5 Nf6 18.Be6 Qe6+=) 16...Qd6 17.Bd3 Bc7 18.g3 h6+=; C) 15...Qd6 16.Rc1 (16.Bd3 Bc7 17.Qh5 h6 18.Qh4 Bg4+=) 16...Bc7 17.g3 Nf6 18.Bd3 Rad8=; D) 15...Qe7 16.Qc2 (16.Bd3 Qh4 17.Qf3 Bg4 18.Qg3 Qg3+=; 16.Rc1 Bc7 17.Nd2 Rad8 18.Bd3 Qh4=; 16.Rd1 Qg5 17.Rc1 Bc7 18.Nc3 Rad8+=; 16.Bc1 Rad8 17.Qc2 Bc7 18.Nd2 Qd6+=) 16...Qd6 17.Bd3 Bc7 18.g3 h6=; E) 15...Qd8 16.Qc2 (16.Qf3 Bc7 17.e4 Qd6 18.e5 Qe7+=; 16.Rd1 Qg5 17.Rc1 Rad8 18.Nc3 Bc7+=; 16.Rc1 Qh4 17.Nd2 Nf4 18.Qd1 Ng2+=; 16.Bd3 Bc7 17.Nd2 Qh4 18.Nf3 Qh6+=; 16.Bc1 Qh4 17.Qc2 Bc7 18.g3 Qh5+=) 16...Qd6 17.Bd3 Bc7 18.g3 Nf6=; F) 15...Nf6 16.Nd2 (16.Bd3 Bc7 17.Nc3 Bf5 18.Bf5 Qf5+=; 16.Be6 Qe6 17.Rc1 Bc7 18.Qf3 Qd6+=; 16.Nc3 Bc7 17.Bd3 Bf5 18.Bf5 Qf5+=; 16.Rc1 Qd6 17.Be6 Re6 18.Qf3 Bc7+=; 16.Rd1 Bc7 17.Nd2 Rad8 18.Rac1 Nd5+=; 16.Qc2 Bf5 17.Qb3 b5 18.Be2 Qd6+=) 16...Bd2 17.Be6 Qe6 18.Qd2 Nd5=; G) 15...Bc7 16.Nc3 (16.Rc1 Qd6 17.g3 Rad8 18.Nc3 Nf6+=; 16.Bd3 Bf5 17.Bf5 Qf5 18.Nc3 Rad8+=; 16.Qh5 Nf6 17.Be6 Qe6 18.Qg5 h6+=; 16.Nd2 Bg4 17.Qd3 Qd6 18.g3 Rad8+=) 16...Qd6 17.g3 Nf6 18.Bd3 Rad8+=.

15.Qf3 Bc7 16.e4 (16.Qh5 Nf6 17.Be6 Qe6 18.Qg5 h6+=; 16.g3 Bg4 17.Qh1 Nb6 18.Bd3 Rad8+=) 16...Nf4 17.Nd2 Bg4 18.Qe3 b5+=.

15.Qh5 A) 15...Bc7 16.Qh4 (16.Nd2 Nf6 17.Qh4 Bc4 18.Nc4 Re4+=; 16.Bd3 Nf6 17.Qg5 h6 18.Qh4 Bf5–/+; 16.Be2 Nf6 17.Qh4 Ng4 18.h3 Nf6+=; 16.Rc1 Nf4 17.Be6 Qe6 18.d5 Nd5–/+) 16...Nc3 17.Nd2 Bc4 18.Nc4 Ne2+=; B) 15...Rad8 16.Be2 (16.Rc1 Bc7 17.Nd2 Nf6 18.Qc5 Bc4+=; 16.Qh4 Nf4 17.Be6 Ne2 18.Kh1 Qe6+=; 16.Bd3 f5 17.Rc1 Bc7 18.Nc3 Nf6+=; 16.Qg5 h6 17.Qh4 Qd6 18.Bd3 Rd7+=) 16...Bc7 17.Nc3 Nf6 18.Qh4 Bg4+=; C) 15...Bd8 16.Bd3 (16.Be2 Nf6 17.Qg5 Ng4 18.Qc5 Bc7+=; 16.Qe2 Bc7 17.Nc3 Bg4 18.Qc2 Bf5+=; 16.Qd1 Bc7 17.Bd3 Bf5 18.Bf5 Qf5+=; 16.Qf3 Bc7 17.e4 Bg4 18.Qd3 Nf4+=; 16.h3 Bc7 17.Bd3 Nf6 18.Qh4 Qd6+=; 16.Bd5 cd5 17.Nc3 Rc8 18.Qf3 Bc7+=) 16...h6 17.Qe2 Bc7 18.Nc3 Qd6=; D) 15...f5 16.Qf3 (16.Rd1 Ne3 17.fe3 Bc4 18.Bc1 Qe6–+; 16.Rc1 Rad8 17.Nc3 f4 18.Bd3 g6=; 16.Bd3 Rad8 17.Rc1 Bc7 18.Nc3 Nf6+=; 16.Qg5 f4 17.ef4 Bd8 18.Qg3 Nf4+=; 16.Qh4 f4 17.Bd5 Bd5 18.ef4 Re6–/+; 16.Be2 Rad8 17.Bd3 g6 18.Qh4 Qe7+=) 16...Qd6 17.Rc1 Bc7 18.g3 Nb6=; E) 15...Bf5 16.Rc1 Rad8 17.Nc3 Bc7 18.Nd5 cd5=; F) 15...Rac8 16.Bd3 g6 17.Qh6 Bf5 18.Bc4 Be4=; G) 15...Bg4 16.Qh4 Bf5 (16...Bd8+= 17.Qg3 Nf6 18.f3 Bc7+=) 17.Rc1 Re4 18.Qh5 Rg4+=.

15.Nd2 Qe7

16.Bd3 Bc7 17.Qh5 (17.Rb1= Rad8 18.Nf3 Bg4+=) 17...g6 18.Qh6 Nf6=.

16.Bd3 Rad8 17.Nb3 Bc7 18.Nc5 Bc8=.

16.Bd3 Bd7

17.Nb3 Bc7= 18.Nc5 Bc8=.

17.Nf3 Bg4

18.Rc1 Rad8 19.Qc2 Bf3+= 20.gf3 Qg5 (20...Qh4 21.Rb1 Bc7 22.f4 Bf4 23.Rfe1–+) 21.Kh1 Qh5 22.f4 Qf3 23.Kg1 Rd6 (23...Kh8 24.Qd1 (24.Bh7? g6–+) 24...Qh3 25.Qc2+=) 24.Bh7= Kh8 25.Bf5 Rf6 26.h3 Qh5 (26...Re3 27.fe3 Qg3 28.Kh1 Ne3 29.Qe2 Nf5 30.Rf3=) 27.Bd7+= Bc7 28.Qd1 (28.Be8? Rg6 29.Qg6 Qg6 (29...fg6? 30.Bd7+–) 30.Kh1 Qe4 31.Kg1 Qe8–+) 28...Qh4 29.Qf3 (29.Be8 Rg6 30.Kh2 Nf4 31.Qg4 Rg4 32.ef4 Bf4 33.Kh1 Qh3) 29...Bf4 (better is 29...Rd8!? 30.Bg4 Bd6+=) 30.ef4+/– (30.Be8 Bh2 31.Kg2 Rf3 32.Kf3 f5–+) 30...Nf4 Opening the e–file gets White a lot of play 31.Rce1 (31.Be8? Nh3 32.Kg2 Nf4 33.Qf4 Qf4–+ (worse is 33...Rf4 34.Rh1 Rf2 35.Kg1 Qh1 36.Kh1 Rb2 37.Bf7+/–)) 31...Ne2 32.Re2 Rf3 33.Re8 (33.Be8 Rh3 34.Bc6 bc6 35.Re8 Kh7–+) 33...Kh7 34.Bg4 Rf4 35.Re5 (better is 35.Re3!?+/–) 35...Rg4= 36.hg4 Qg4 ½–½. Fischer,Detlev – Bergamini,Lorenzo, corr EU–ch GT226, 1985.

18.Rc1 Rad8 19.Rc4 A) 19...Qf6 A1) 20.Rc1 Bc7 21.h3 Bh5 22.Re1 Qd6 23.Bc2+=; A2) 20.Ba1 Bc7 21.h3 Bf3 22.Qf3 Qd6 23.g3+=; A3) 20.Ra4 Bc3 (20...b6 21.Rc4 b5 22.Rc1 Bc7 23.Re1=) 21.Qc2 Bf3 22.Bc3 Qg5 23.g3+=; A4) 20.Bb1 h6 21.h3 Bh5 22.Bd3 Bc7 23.Re1+=; A5) 20.h3 Bh5 21.Rc1 Bc7 22.Re1 Qd6 23.Bc2+=; A6) 20.Kh1 Bc7 21.h3 Bh5 22.Ra4 a5 23.Rc4–/+; A7) 20.Be2 Bc7 21.Ne5 Be2 22.Qe2 Nb6 23.Rc2+=; B) 19...Bc7 20.h3 Bh5 21.Ra4 Qd6 22.g4 Ne3 23.Qc1–+.

18.Rc1 Rad8 19.Kh1 Bc7+= A) 20.Qa4 Bf3 21.gf3 Qd6 22.f4 Nf4 23.Bh7–+; B) 20.h3 Bh5 21.Qc2 Bf3 22.Bh7 Kh8 23.gf3–+; C) 20.Qb3 Bf3 21.gf3 Qh4 22.f4 Nf4 23.Qb7–+; D) 20.Qc2 Bf3 21.gf3 Qh4 22.f4 Nf4 23.ef4–/+; E) 20.Bc2 Nf6 (20...Qd7 21.Kg1 f5 22.h3 Bh5 23.Qd3+=; 20...Bd6 21.Qd3 Nf6 22.Nd2 Bc7 23.Rb1+=; 20...Rd7 21.h3 Bh5 22.Bf5 Rdd8 23.e4+=; 20...a6 21.Qd3 Nf6 22.Qb3 Rd5 23.Ne5+=; 20...Bb8 21.Qd3 Nf6 22.Nd2 Bc7 23.a4+=; 20...h6 21.h3 Bh5 22.Qd3 Nf6 23.Rg1+=) 21.h3 Be6 22.Bd3 Bd5 23.Qc2+=; F) 20.Bb1 Nf6 (20...Bd6 21.Qd3 Nf6 22.Nd2 Bb8 23.Bc2+=) 21.Qa4 Bf3 22.gf3 Qe6 23.Rg1+=.

18.Rc1 Rad8 19.h3 Bh5 A) 20.Rc5 Bc7 (20...Bb6 21.Rc1 Qf6 22.Re1 Ba5 23.Rf1+=) 21.Re1 Qd6 22.Bf5 h6 23.Rc1+=; B) 20.Bf5 Bc7 21.e4 Nf4 22.Re1 g6 23.Bg4+=; C) 20.Rc4 Qf6 21.Be2 Bc7 22.Ra4 Bf3 23.Bf3–/+; D) 20.a4 Qf6 (20...Qd6 21.Bc4 Bc7 22.Re1 Bf3 23.Qf3+=; 20...Bc7 21.Re1 Qd6 22.Bc4 Ba5 23.Rf1+=; 20...Kh8 21.Bc4 Bb4 22.g4 Bg6 23.Ne5+=; 20...Bb4 21.Ra1 Qf6 22.a5 c5 23.a6+=; 20...a6) 21.Ba3 Kh8 22.Rc5 b6 23.Rc1+=; E) 20.Ra1 Qf6 21.Rb1 Bc7 22.Re1 Qd6 23.Bc2+=; F) 20.Be2 Bc7 (20...Bb6 21.Ne5 Be2 22.Qe2 Bc7 23.Qg4+=) 21.Ne5 Be2 22.Qe2 Qe6 23.Rfd1+=.

18.Rc1 Qf6=.

18.h3 Bh5=.

14.a3 Bd6

15.Qc2 A) 15...Qc7 16.h3 (16.Bd3 Bh2 17.Kh1 Kh8 18.Nd2 Bd6–/+; 16.g3 Bg3 17.hg3 Ne3 18.fe3 Bc4–/+; 16.Kh1 Bh2 17.Bd3 Kh8 18.Nd2 Bd6–/+; 16.e4 Bh2 17.Kh1 Qf4 18.Nd2 Qh6–+) 16...Rad8 17.Bd3 h6 18.Nc3 Qe7=; B) 15...Bf5 16.Qe2 (16.Qd2 Bc7 17.Nc3 Qd6 18.g3 Ba5+=; 16.Qd1 Re6 17.Nc3 Rh6 18.g3 Bg4–+; 16.Qb3 Nb6 17.Be2 Qc7 18.h3 Qd7+=; 16.Qc1; 16.Bd3) 16...Nf4 17.Qd2 Bb1 18.Rfb1 Nd5=; C) 15...Rad8 16.Bd3 (16.Nd2 Nf6 17.Rfc1 Bf5 18.Qb3 b5+=; 16.Re1 Qc7 17.h3 Qe7 18.Bd3 Qg5=) 16...Qc7 17.h3 h6 18.Nc3 Qe7=; D) 15...Qe7 16.g3 (16.Rc1 Ne3 17.fe3 Bc4 18.e4 Bd5–+; 16.Bd3 Qh4 17.g3 Qh5 18.Nd2 Rad8+=; 16.Re1 Qh4 17.g3 Qh5 18.e4 Nf6+=; 16.e4 Nf4 17.Be6 Qe6 18.Nc3 Rad8+=; 16.h3 Qg5 17.Bd3 Ne3 18.fe3 Qe3–/+; 16.Nd2 Rad8 17.Rfc1 Qh4 18.Nf3 Qh5+=) 16...Nf6 17.Bd3 Bd5 18.Nc3 Bf3+=.

15.Nd2 A) 15...Rad8 16.Bd3 (16.Qc2 Qe7 17.Rfc1 Nf6 18.Be6 Qe6=; 16.e4 Nf4 17.Be6 Re6 18.Qf3 Rg6+=; 16.Rc1 Qc7 17.Nf3 Qe7 18.Qc2 Nf6=; 16.Qh5 Nf6 17.Qh4 Be7 18.Rfc1 Ng4+=; 16.Re1 Qc7 17.h3 f5 18.Bd3 Qd7=; 16.Rb1 Bf5 17.Rc1 b5 18.Bb3 a5+=) 16...Bf5 17.Bf5 Qf5 18.e4 Re4=; B) 15...Rac8 16.Rc1 (16.Qc2 f5 17.Rfc1 b5 18.Bb3 a6=; 16.Bd3 f5 17.Nc4 Bb8 18.Qf3 f4+=; 16.e4 Nf4 17.Re1 b5 18.Be6 Re6+=; 16.Qh5 Rcd8 17.Bd3 g6 18.Qh4 Bf5=; 16.a4 Bb4 17.Nf3 Bg4 18.Bd3 h6=; 16.Be2 Qc7 17.Nf3 Bf5 18.Bd3 Qd7+=) 16...Qc7 17.Qh5 Qe7 18.Bd3 Nf6=; C) 15...Rab8 16.Qc2 (16.e4 Nf4 17.Re1 Rbd8 18.Rb1 b5+=; 16.Re1 Qc7 17.h3 Rbd8 18.e4 Nb6=; 16.Rc1 Bg4 17.Qc2 Qf5 18.Qf5 Bf5=; 16.Bd3 Rbd8 17.Qc2 f5 18.Nf3 Qf7=; 16.Qh5 Bf5 17.Rac1 Rbd8 18.Rfe1 Re7+=; 16.Rb1 Bf5 17.Rc1 b5 18.Bb3 a5+=) 16...Qe7 17.Nf3 h6 18.Rfc1 Rbd8=; D) 15...Qe7 16.e4 (16.Bd3 Qh4 17.Nf3 Qh5 18.Ne5 Qh6+=; 16.Qf3 Nf6 17.Be6 Qe6 18.Rfe1 Nd5=; 16.Qc2 Rad8 17.Rfc1 Qh4 18.Nf3 Qh5+=; 16.Qh5 Nf6 17.Qh4 Ng4 18.Qe7 Bh2–/+; 16.Re1 Qg5 17.Nf3 Qg6 18.Bd3 Qh5=; 16.Qe2 Rad8 17.Rfc1 a6 18.Qf3 Nb6=) 16...Nf4 17.Be6 Qe6 18.Qf3 Rad8=; E) 15...Nf6 16.Bd3 (16.Rc1 Rad8 17.Be6 Qe6 18.Nc4 Bc7+=; 16.Be6 Qe6 17.Qb3 Qb3 18.Nb3 Nd5=; 16.Qc2 Bf5 17.Qb3 Rab8 18.Rfd1 b5+=; 16.Qb3 Qc7 17.Nf3 Bc4 18.Qc4 Ng4+=; 16.Re1 Qc7 17.h3 Rad8 18.Bd3 Qe7=; 16.Rb1 Bd5 17.Bd5 cd5 18.Qb3 Rac8=) 16...Rad8 17.Nc4 Bc4 18.Bc4 Qf5=; F) 15...f5 16.Qf3 (16.Rb1 Rad8 17.Qf3 b5 18.Bb3 a5+=; 16.Re1 Rad8 17.Bd3 Bc7 18.Rc1 Qf7=; 16.Qh5 Qf7 17.Qf3 Rad8 18.Rfc1 Nb6=; 16.Qc2 Rac8 17.Rac1 b5 18.Bb3 Qf7=; 16.Rc1 Qe7 17.a4 Rad8 18.Qc2 Qf7+=; 16.Qe2 Rad8 17.Rfc1 Nb6 18.Bd3 Na4=) 16...Rad8 17.Rfc1 b5 18.Be2 a5=; G) 15...Bf5 16.Qh5 (16.Re1 Re7 17.a4 Nb4 18.Rc1 Rae8+=; 16.Rc1 Rad8 17.Qh5 Bg6 18.Qh4 Nb6+=; 16.Bb3 Rad8 17.Nc4 Bc7 18.Ne5 Qe6+=; 16.Qb3 Rad8 17.Rfc1 Nb6 18.Be2 Qe7+=; 16.Nf3 Rad8 17.Qb3 Be4 18.Nd2 Bh2+=; 16.a4 Nb4 17.Qh5 Rad8 18.a5 Bg6+=) 16...b5 17.Bb3 Rad8 18.Rfe1 Bg4=.

15.Bd3 A) 15...Qd8 16.Nd2 (16.Qh5 Nf6 17.Qh4 g6 18.h3 Nd5+=; 16.Qf3 Qh4 17.g3 Qg5 18.Nc3 Bg4+=; 16.Nc3 Qh4 17.g3 Qh3 18.Qf3 Bg4+=) 16...Qh4 17.Nf3 Qh6 18.Rb1 Nb6=; B) 15...Rad8 16.Qc2 (16.Nc3 Nc3 17.Bc3 Bf5 18.Bf5 Qf5+=; 16.Re1 Bf5 17.Bf5 Qf5 18.Nc3 Nf6+=; 16.Qh5 Nf6 17.Qg5 Qe7 18.Qh4 h6+=; 16.Nd2 Qc7 17.Qh5 Nf6 18.Qh4 Be7=; 16.Qe2 Bf5 17.Bf5 Qf5 18.Nc3 Nf6+=; 16.h3 Bf5 17.Nc3 Bd3 18.Qd3 Bc7+=) 16...Qc7 17.h3 h6 18.Nc3 Qe7=; C) 15...Rac8 16.Nd2 f5 17.Rc1 Bc7 18.Nf3 Qe7=; D) 15...Qe7 16.Nd2 (16.Qh5 Nf6 17.Qh4 h6 18.Nc3 Ng4+=; 16.Qf3 Qh4 17.g3 Qg5 18.Nc3 Bg4+=) 16...Qh4 17.Nf3 Qh5 18.Ne5 Qh6+=; E) 15...Nf6 16.Qc2 (16.Nd2 Rad8 17.Nc4 Bc4 18.Bc4 Qc7=; 16.e4 Bf4 17.Qc2 h6 18.Nc3 Rad8=) 16...Qc7 17.h3 Qb6 18.Nd2 Rad8+=; F) 15...Qc7 16.h3 (16.Qc2 Bh2 17.Kh1 h6 18.e4 Nf6=; 16.Qh5 g6 17.Qh4 Qb6 18.Bc3 Be7+=; 16.g3 h6 17.e4 Nb6 18.Qc2 Qd7=; 16.Kh1 h6 17.Qf3 Qb6 18.Bc1 Nf6+=) 16...h6 17.Nd2 Qe7 18.Ne4 Bc7=; G) 15...Bf5 16.Nc3 (16.Bf5 Qf5 17.Nc3 Re6 18.Nd5 Qd5+=; 16.Bc4 b5 17.Bb3 a5 18.Nc3 Nc3+=; 16.Bc2 Qe6 17.Bf5 Qf5 18.Nc3 Re6+=; 16.Re1 Rad8 17.Nc3 Bd3 18.Qd3 Nf6+=) 16...Nc3 17.Bc3 Bd3 18.Qd3 Qc7+=.

15.Qe2 Qc7 16.g3 (16.h3 Qe7 17.Rc1 Rad8 18.Qf3 Nb6+=) 16...Qe7 17.Rc1 Nf6 18.Nc3 Bc4+=.

15.e4 Nf4 16.Be6 Re6 17.Qc2 Rg6 18.g3 Qh3–+.

15.Qh5 Nf6 16.Qe2 (16.Be6 Qe6 17.Qf3 Ng4 18.g3 Qg6+=) 16...Rad8 17.Be6 Qe6 18.Nc3 Bc7+=.

9.Ne5 Ne6

10.Qb3 Bd6 11.Nf3 (11.d4 Be5 12.de5 Nd7 13.Nd2 Nec5 14.Qc2 b6 15.Nb3+=; 11.Bc4 Qg5 12.f4 Qh4 13.g3 Qe7 14.Nc3 Be5 15.fe5+=; 11.Nc4 Bf8 12.Ne5 Nd7 13.Bc4 Ne5 14.Be5 Nc5 15.Qc3+=; 11.Be2 Be5 12.Be5 Nc6 13.Bb2 Qg5 14.Rg1 Qe7 15.Nc3+=; 11.Qc3 Nd7 12.Nc4 Be7 13.Qc2 Bf6 14.Bd3 Nd4 15.Bd4=) 11...Nc6 12.Be2 (12.Bb5 Bd7 13.0–0 Na5 14.Qa4 c6 15.Bd3+=) 12...Ng5 (12...a5 13.0–0 a4 14.Qc3 Ra5 15.Bc4=) 13.d4 (13.0–0 Rb8+= 14.Qc3 Nf3 15.Bf3=) 13...Rb8 (13...Nf3 14.gf3 (14.Bf3 Bb4 15.Kd1+=) 14...Qg5 15.h4+=) 14.Nfd2+= b6 (14...Ne6!?+= 15.Nc3+=; 14...Bf5 15.Nc3+=) 15.d5= Na5 16.Qc2 f5 17.0–0 f4 18.Bh5 Nh3 (better is 18...Re7!? 19.e4 c6=) 19.Kh1+/– Nf2 20.Rf2 fe3 (20...Qh4 21.Be8 Qf2 22.Na3 fe3 23.Qc3+/–) 21.Rf7 Re7 22.Re7 Qe7 23.Nf1 Qg5 24.Qe2 Ba6 25.Bf7! Kf7 26.Qa6 Kg8 27.Nc3 (27.Qa7? Re8 28.Qa6 e2–+) 27...Qe5 (27...Rf8!? 28.Ne4 Qd5 29.Nd6 Qd6+/–) 28.Nd1+/– (28.Qa7 Rf8 29.Ng3 Nc4–+) 28...Qf4 (better is 28...Qd5!? 29.Nde3 Qe4+/–) 29.Nde3+– Re8 30.Qe2 (30.Rd1 Bc5 31.Bc1 Qa4+–) 30...Bc5 31.Re1 Nc4 32.Bc1 (32.Qc4? Qc4 33.Nc4 Re1–+) 32...a5 33.Qf3 (33.Qd1 Rd8+–) 33...Qe5 (33...Qf3 34.gf3 b5+–) 34.Nc2 (34.Nc4?! Qe1 35.Bd2 Qb1+=) 34...Qe1 (34...Rf8 35.Qd3 Nb2 A) 36.Re5?? Nd3 37.Ng3 Ne5–+ (37...Nc1?! 38.a4–+); B) 36.Bb2 Qb2 37.Qc4+–) 35.Ne1 Re1 36.Qf4 (better is 36.Bf4+–) 36...Ne5? (better is 36...b5=) 37.d6!+– Bd6 (37...Bd6 38.Bd2; 37...cd6 38.Bd2) 38.Bd2 Rd1 39.g3 h6 (39...Nf7 40.Qc4+–) 40.Kg1 (better is 40.Kg2 Nf7 41.Qe4+–) 40...Kh8? (40...Rb1+–) 41.Bc3 Rd5 42.Ne3 Rc5 43.Bd4 Nc6 (43...Kh7 44.Bc5 Ng6+–) 44.Qh6 1–0. Dopper,Johan – Grehl,Siegfried, corr SOK–93–95, 1993.

10.Qc2 Nd7 A) 11.Nd7 Bd7 (11...Qd7 12.Bd3 Nf8 13.0–0 c6 14.a3 Bd6 15.Nc3 Rd8 16.Be2=) 12.Bd3 Qh4 13.Qc4 Qc4 14.Bc4 Rad8 15.a3+= Ba5 16.Bc3+=; B) 11.Bd3 B1) 11...Qh4 12.0–0 (12.Qc4 Qc4 13.Bc4 c6 14.a3 Bd6 15.Nd7 Bd7 16.Nc3=; 12.Nf3 Qh5 13.0–0 Bd6 14.Re1 h6 15.Be2 Ng5 16.Ne5=; 12.g3 Qh5 13.Be2 Qg5 14.f4 Qe7 15.0–0 a5 16.a3=) 12...c6 13.Nf3 Qh5 14.Nc3 Nf6 15.Ne2 Be7 16.Ng3=; B2) 11...Ne5 12.Be5 Nd4 13.Bd4 Qd4 14.0–0 Qa1 15.Nc3 Bc3 16.dc3=.

10.Bc4 Bd6 A) 11.0–0 Nd7 (11...Be5 12.Be5 Nd7 13.Bg3 c5 14.Qc2 a6 15.a4 b6 16.Nc3=; 11...f6 12.Nf3 a6 13.d4 b5 14.Bd3 Bb7 15.a4 b4 16.Qc2+=) 12.d4 Qf6 13.f4 Nb6 14.Bd3 Qh6 (14...Qh4 15.Nc3 f6 16.Nf3=) 15.Qf3= c5 16.d5=; B) 11.d4 B1) 11...Nd7 12.0–0 Qf6 13.f4 Nb6 14.Bd3 Qh6 15.Qf3 c5 16.d5=; B2) 11...Be5 12.de5 Nc6 13.0–0 (13.Qh5 Nb4 14.Qe2 Nf8 15.0–0= 15...Be6 16.Na3=) 13...Qh4 14.Qc2 Rd8 15.Rc1 Rb8 16.a3=; B3) 11...Qg5 12.Qf3 Be5 13.de5 Nc6 14.Qg3 Qg3 15.hg3 Nc5 16.Nd2–/+; C) 11.Qh5 Be5 12.Be5 (12.Qe5 Nd7 13.Qg3 Ndc5 14.0–0 c6 15.f4= Na4 16.Be5=) 12...Nd7 13.f4 c6 14.0–0 Ne5 15.fe5 Rf8 16.d4+=.

10.Bc4 Nd7 A) 11.0–0 A1) 11...Nb6 A11) 12.Bb3 f6 13.Nc4 Nd5 14.Qh5 c6 (14...g6 15.Qh4 Be7 16.Nc3=) 15.Nc3= 15...g6 16.Qh4=; A12) 12.Qh5 f6 13.Bd3 g6 14.Bg6 hg6 15.Qg6 Ng7 16.Nf7+/–; A2) 11...Bd6 12.d4 Qf6 13.f4 Nb6 14.Bd3 Qh6 15.Qf3 f6 16.Nc4=; B) 11.Qh5 Ne5 12.Be5 (12.Qe5 Bd6 13.Qc3 Qg5 14.0–0 Nc5 15.f4 Qg6 16.f5+=) 12...c6 13.0–0 b5 14.Bb3 Qg5 15.Qg5= Ng5 16.d4=.

10.Bc4 Qe7 A) 11.0–0 A1) 11...Nd7 A11) 12.Qh5 A111) 12...Bd6 A1111) 13.d4 a6 (13...Be5 14.de5 Nd8 15.Rd1 a5 16.Bd3+=) 14.Rc1 Ne5 (14...Nf6 15.Qh4= Nd7 16.Qe7+=) 15.de5 Bb4 16.a3=; A1112) 13.f4 Nb6 14.Bb3 c6 15.f5 Nd8 16.Ng4+/–; A112) 12...Nb6 13.Bb3 Bd6 14.Rc1 a5 15.d4 a4 16.Bc2=; A12) 12.d3 Bd6 13.f4 Nb6 14.Bb3 Rd8 15.Qc2 a5 16.Nc3=; A2) 11...Bd6 12.Qh5 Nd7 13.d4 a6 14.Rc1 Nf6 15.Qd1 Rb8 16.Nd2=; B) 11.Qc2 Bd6 12.0–0 Nd7 13.d4 Be5 14.de5 Nec5 15.f4 Nb6 16.Ba3=; C) 11.Qh5 Nd7 (11...Bd6 12.0–0 Nd7 13.d4 a6 14.Rc1 Nf6 15.Qh4 Nd7 16.Qe7=) 12.0–0 C1) 12...Bd6 C11) 13.d4 c6 (13...Ne5 14.de5 Bc5 15.Nd2 Bd7 16.Rfd1=) 14.Rd1 Nf6 (14...Ng5 15.Nd7= Bd7 16.Nc3=) 15.Qe2 Ng5 16.f4=; C12) 13.f4 Nb6 14.Bb3 c6 15.f5 Nd8 16.Ng4+/–; C2) 12...c6 13.Rc1 Nb6 14.Bb3 Bd6 15.d4 Nd7 16.Nd7=.

10.Bc4 f6 11.Nd3 Bd6 12.f4 (12.Nc3 Nd7 13.Qh5 Nb6 14.Bb3 a5 15.Ne4 a4 16.Nd6=) 12...Kh8 13.0–0 Nd7 14.Qh5 Nb6 15.Bb3= Bd7 16.a4=.

10.Qh5 g6 11.Qf3 Qe7 (11...Ng5 12.Qf4 Bd6 13.h4 Be5 14.Be5 Ne6 15.Qf6 Qf6 16.Bf6=) 12.Nc3 Ng5 13.Qf4 c6 14.Ng4 Nd7 15.Qd4= f6 16.Bc4=.

10.Qh5 f6

11.Qf7 Kh8 12.a3 =+.

11.Ng4 Kh8 12.Be2 (12.Bb5 c6 13.Bd3 Nf8 14.Be2 Ng6 15.0–0 Qa5 16.Qa5+=; 12.Bc4 Nf4 13.Nh6 Nh5 14.Nf7 Kg8 15.Nd8= 15...Kf8 16.a3=) 12...Qe7 13.0–0 Nf4 14.ef4 Qe2 15.Nf6 Qh5 16.Nh5+=.

9.Ne5 Qg5!

10.Nf3 Qh5 11.Nd4+= (11.Nc3 Nc6 12.d4 Bg4 13.h3 Rad8 14.Kd2 Qh6 15.Kc2–/+) 11...Bg4 12.Qa4 Na6 13.f3 Nc5 14.Qc2 Re3 15.Kf2 Ncd3 16.Bd3 Nd3 17.Ke3 Qe5 18.Kd3 Bf5 19.Nf5 Qf5 0–1. Dopper,Johan – Steinmann,Joachim, corr TKM/A005, 1999.

10.ef4 Qf4

11.Qe2 f6? 12.g3.

11.Qe2 Nc6

12.g3 Ne5 13.gf4 Nd3 14.Kd1 Re2 (14...Nb2? 15.Kc2 Re2 16.Be2 Bf5 17.Kb2+–) 15.Be2 Nf2 (15...Nb2? 16.Kc2+–) 16.Ke1 Nh1 +=.

12.g3 Qf5! 13.f4 Qc2! 14.Qc4 Ne5 15.Qc2 Nd3.

12.g3 Qf5 13.f4+= f6 (13...Qc2 14.Bc3 f6 15.Bg2 Bc3 16.Nc3 fe5 17.Be4+/–) 14.Bg2 fe5 15.Bc6 bc6 16.0–0 (16.Be5 Ba6 17.Qe3–+) 16...a5 (16...Bc5 17.d4 Bb6 18.fe5 Qe5 19.Qe5 Re5 20.Nd2–/+) 17.Qc4 (17.fe5 Qc2 18.Bd4 Ba6 (18...c5 19.Bc3 Ba6 20.Qd1 Qg6 21.Rf4–/+) 19.Qd1 Qd3 20.Rf4 Rad8 21.Bc3–/+) 17...Be6 18.Qc6 (18.fe5 Bc4 19.Rf5 Bd3 (19...Rab8–/+ 20.d4 c5 21.Rf4–/+) 20.Rf3 Bc5 21.Kg2–+) 18...Rad8 (18...Qd3 A) 19.fe5 A1) 19...Bd2?! 20.Nd2 (20.Qc7 Be3 21.Rf2 Qd1 22.Kg2 Bd5 23.Rf3 Qf3 24.Kh3 Qh5) 20...Qd2 21.Bc3 Qe3 22.Rf2=; A2) 19...Bd5 20.Qd5 Qd5–+ 21.Rf4–+; B) 19.Qc7 Bd5 B1) 20.fe5 Rf8 (20...Qe4) 21.Na3–+ –11.41 (21.Rf7 Rf7 22.Na3 Rc7 23.Nc4 Bc5 24.Bd4 Bd4 25.Ne3 Be3 26.de3 Qe3 27.Kf1 Rf8); B2) 20.Nc3–+ Rac8 21.Nd5–+) 19.fe5 (19.Be5?? Bd5 20.Qc7 Rd7 21.Qd7 Qd7–+; 19.Qc7 A) 19...Bd2?! 20.Nd2 Rd2 21.Be5= (worse is 21.fe5 Qe4 22.Qb7 Qe3 23.Kh1 Qe2 24.Rf2 Qf2 25.Qg7 Kg7 26.Rd1 Rd1); B) 19...Rd7; C) 19...Bd5 20.Be5 Rd7 21.Qb6–+ (21.Qd7 Qd7–+)) 19...Qd3 20.Nc3 (20.Qc7?? Rc8 21.Qa7 Bc5 22.Qc5 Rc5–+) 20...Qc2 (20...Qc2 21.a3 Bd5–+ (21...Qb2?! 22.ab4 ab4 23.Rfb1 Qd2 24.Rb4–+); 20...Qd4 21.Rf2–+) 0–1. Pachurka,Roland (1865) – Hoegerl,Gerd (2325), Telechess, 2004.

12.g3 Qf5 13.f4+= f6 14.Bg2 fe5 15.Bc6 bc6 16.0–0 Qc2 17.Be5 Bh3 18.Re1 Bc5 19.Kh1 Rad8 20.a4 Be6 21.h3 Bh3 22.d3 (22.Qe4 Qb3 23.Kh2 Bf2–+) 22...Qe2 23.Re2 Rd3 24.Rc2 Bd6 25.Nd2 (25.Kh2 Bf5 26.Rd2 Rb3 27.Bd6 cd6–+ (27...Rb1?! 28.Rb1 Bb1 29.Bc7–/+; 27...Bb1?! 28.Ra3 Rb7 29.Be5–/+)) 25...Be5 26.fe5 Re5 27.Kh2 Rh5 28.Re1 Be6 29.Kg1 Rg3 30.Kf2 Rg6 31.Nf3 Bd5 32.Rce2 Rf5 33.Re8 Kf7 34.R1e7 Kf6 35.Re3 Rg4 36.Ke2 Bf3 37.Rf3 Rf3 (37...Rf3 38.Kf3 Ra4 39.Rf8 Kg6–+) 0–1. Pcmvr – Palamede, playchess.de, 2005.

12.g3 Qe5

13.Be5 Ne5

14.Nc3 Bf5.

14.Kd1?! Bg4 15.f3 Bf3 16.Qf3 Nf3 17.Bg2 Ne5 18.Bb7 Rad8!

14.f3 Nf3 15.Kd1 Re2 16.Be2 –/+.

14.f3 Nf3–/+ 15.Kf2 Re2 16.Be2 Nd2 17.Nd2 Bd2 18.Rad1 Bg5 19.h4 Be7 20.Bf3 c6 21.a4 (21.Rb1 Bc5 22.Ke2 Kf8–/+) 21...Bc5 22.Kg2 Be6 23.h5 g5 24.h6 (24.Rhe1 g4 25.Be2 Bd5 26.Kh2 f5–+) 24...g4 25.Be4 f5 26.Rh5 fe4 27.Rc5 (27.Rg5 Kf7 28.Rf1 Ke7 29.Rc5 Bd5–+) 27...Bd5 28.Rdd5 (28.Kf2 Rf8 29.Ke2 Rf3 30.Rcd5 cd5 31.Rd5 Rg3–+) 28...cd5 29.Rd5 Kf7 30.Rd7 Kg6 31.Rb7 Re8 32.Ra7 e3 (32...Kh6 33.a5–/+) 33.Kf1 (33.Ra6 Kf5 34.Kf1 Ke4=) 33...e2–/+ 34.Ke1 Kh6 35.Ra6 Kg7 36.Ra7 Kg8 (36...Kg6 37.Ra6 Kf5 38.Ra5 Kf6 39.Ra6 Ke5 40.Ke2 Kd4 41.Kf2=) 37.Ra5 (37.a5 Re3=) 37...Kf7 38.Ra7 Kg6 39.Ra6 Kf5 40.Ra5 Ke4 41.Ke2 Rc8 42.Rb5 Rc2 43.Kf1 Ra2 ½–½. Roever – Leisebein,Peter, corr SOK–91–74, 1991.

14.Bg2!? Nd3 15.Kf1 Re2 16.Ke2=.

14.h3 Nd3 15.Kd1 Re2 16.Ke2–+.

11.Be2 Re5–/+

12.Be5 Qe5

13.Nc3 Nc6 14.0–0= Be6 (14...Bd6 15.g3=) 15.Bf3 Rd8 16.Re1 (16.Rc1 Qf4 17.Bc6 bc6=) 16...Qg5 17.Ne4 Qa5 18.a3 Bd2 19.Nd2 Rd2 (worse is 19...Qd2 20.Bc6 bc6 21.Qa4+/–) 20.Qb1 Qb6 21.Qb6 ab6 22.Bc6 (22.Rac1 Rd6=) 22...bc6 23.Rad1 Rd1 24.Rd1 Bd5 25.f4 Kf8 26.Re1 (26.a4 Ke7=) 26...c5 27.g3 (27.a4 Bb3 28.Ra1 c4=) 27...c6 (27...b5 28.Kf2+=) 28.a4= Bb3 29.Ra1 c4 30.a5 ba5 31.Ra5 c3 32.Kf2 c2 (32...Bd1 33.Ke1 c2 34.Kd2+=) 33.Ra1 (33.Rc5 Ba4+=) 33...Ke7= 34.Ke3 c5 35.Kd2 c4 (35...Ke6 36.Ra6 Kd5 37.Rb6+=) 36.Ra7+= Ke6 37.Kc1 h6 38.g4 g6 39.h4 (39.Ra6 Ke7+/–) 39...Kf6 40.Ra6 Kg7 41.g5 hg5 42.fg5 Kf8 43.Ra7 Kg8 44.Ra6 (44.Rb7 Kf8+=) 44...Kg7 (44...Kf8 45.Rb6+=) 45.Ra7 (45.Rd6 Kf8+=) 45...Kf8 (45...Kg8 46.Rb7+=) 46.Ra6 (46.Rb7 Kg7+=) 46...Ke7 (46...Kg7!?=) ½–½. Wantoch_Rekowski,Jacek – Zillmer,Jim, corr or02–019, 2002.

13.Nc3 Bc3

14.dc3 Qc3

15.Kf1 Nc6

16.Bf3 Qc4 17.Qe2 Be6 18.Qc4 Bc4 19.Ke1 +=.

16.Bf3 Nd4 17.Rc1= Qb4 18.Rc7 Be6 19.Bb7?? (19.a3 Qa5 20.Rc1–/+ (20.Bb7?? Re8 21.Be4 Qc7–+)) 19...Bc4 20.Rc4 Qc4 21.Ke1 Re8 22.Kd2 Rd8. Wantoch_Rekowski,Jacek – Schols,Andre, corr or01–006 E–mail, 2001.

16.Rc1 Qf6

17.Qb3 a5 18.a4 Nd4 19.Qb2 Qd6 20.Rd1–/+.

17.Qb3 Rb8 18.Qc3 Qg5 19.h4 Qf4 20.h5+=) 18.Qc3 Bf5 19.Rd1 Rd8 20.a3–+.

17.Qb3 Rb8 18.Qg3 A) 18...Be6 19.Qc7 Qb2 20.Rd1 Rc8 21.Qg3 Qa2–/+; B) 18...Qb2 19.Rd1 Be6 20.Qc7 Rc8 21.Qg3 Qa2–/+.

17.Bb5 Nd4 18.Bd3 c6 19.Qh5 h6 20.a3–/+.

17.Qd2 Be6 (17...Bf5 18.Qc3 Qc3 19.Rc3 Rd8 20.Bf3+=; 17...Rb8 18.Qc3 Qc3 19.Rc3 Be6 20.Bc4+=; 17...h6 18.Qc3 Qc3 19.Rc3 Be6 20.a3+=) 18.Bf3 Rd8 19.Qe3 Bd7 20.Be4–/+.

17.Bf3 Nd4 18.Be4 (18.Rc7 Nf3 19.Qf3 Qa1 20.Ke2 Qe5 21.Qe3 Bg4 22.f3 Qc7–+) 18...c6 19.Qd3 Bg4 (19...Bf5 20.Rd1+=) 20.f3 (20.Qb1–/+) 20...Rd8 21.Qb1? (better is 21.Re1–/+) 21...Nf3!–+ 22.Bf3 (22.gf3 Bf3) 22...Bf3 23.Qa1 (23.Qc2 Qf4 24.Re1 Bg2 25.Kg2 Rd2 26.Qd2 Qd2 27.Kg3–+) 23...Bg2! 0–1. Sawamura,Tetsushi – Do Prado,Luiz, EM/J50/P050 ICCF Email, 2001.

17.g3 Bh3–/+ 18.Kg1 Rd8 19.Qb3 Nd4 Threatening mate: Nxe2 20.Qe3 c5! 21.Rd1?? (21.Rc5 Ne2 Eliminates the defender e2) 21...Ne2 (better is 21...Qc6 22.Bf1 Bf1 23.Rf1 Re8 24.Qe8 Qe8–+) 22.Qe2 Rd1 23.Qd1 c4 24.f3?? (better is 24.a3–+) 24...Qb6 0–1. Manninen,Juha – Ganesan,Arasu, corr 3GMM–19, 1995.

17.Qb3 Nd4

18.Qb2 A) 18...Qd8 19.Qc3 (19.Bd3 b6 20.Qb1 h6 21.a3 c5–/+) 19...Ne2 20.Ke2 Bd7 21.Qe5 Qh4+=; B) 18...Qd6 19.Bd3 (19.Re1 Ne2 20.Qe2 Be6 21.Qc2 Rd8–/+; 19.Bc4 b6 20.h4 c5 21.h5 Bf5–/+; 19.a3 b6 20.Bd3 c5 21.h4 Bb7–/+; 19.h4 h6 20.h5 c5 21.Re1 b6–/+; 19.Rd1 c5 20.Bd3 b6 21.Qb1 Qh6–/+) 19...Bf5 20.Bf5 Qa6 21.Ke1 Re8–/+.

18.Qc3 b6 19.Qc7 Bf5 20.a4 Ne2 21.Ke2 Re8+=.

18.Qc3 c5 19.Qc5 Bf5 20.Rd1 Ne2 21.Ke2 Re8+=.

18.Qc3 c6 19.Rd1 c5 20.Qc5 Ne2 21.Qe5 Bg4=.

18.Qc3 Bd7 19.Rd1 c5 20.Qc5 Ne2 21.Rd7 Nf4–/+.

18.Qc3 Be6 19.Qc7 Ne2 20.Ke2 b5 21.Qc6 Rb8+=.

18.Qc3 Bf5

19.Qc7 Ne2 20.Ke2 Qa6 21.Qc4 Re8 22.Kf3 Qa3 23.Rc3 Be4 24.Kg4 Qd6–+.

19.Qc7 Ne2 20.Ke2 Qa6 21.Qc4 Re8 22.Kf3 Qa3 23.Kf4 Qd6 24.Kf5 h5–+.

19.Rd1 c5 20.Qc5 Ne2 21.Ke2 Re8 22.Kf1 Qb2 23.Kg1 Qd2 24.Qc1 (24.Rd2 Re1) 24...Qa2 25.h3 Qe2 26.Rd2 (26.Kh2 Qe5 27.f4 Qb8+=) 26...Qe5–/+ 27.Qb2 Qc7 28.Rd1 h6 29.Qd4 a6 30.Qd6 Qd6 31.Rd6 Re2 32.Rb6 (32.f3 Kf8–/+) 32...Be4 33.f3 (33.h4 Kh7–/+) 33...Bc6–+ 34.Kh2 (better is 34.Rb3!?–+) 34...Bf3 35.Kg3 Be4 (35...Bg2?! 36.Rh2 Bf3 37.Re2 Be2 38.Rb7–+) 36.Rc1 (36.Rg1 Kf8–+) 36...Rg2 37.Kh4 (37.Kf4 Bc6 38.Rcc6 bc6 39.Ra6 g5 40.Kf5 Rf2 41.Ke4 Rf4 42.Ke5–+) 37...g5 38.Kh5 Kg7 0–1. Dror,Aaron – Gosme,Emile, IECC, 1998.

19.Rd1 Rd8 20.a3 c5 21.Re1 b5–+.

19.Rd1 Rd8 20.Qc7 Rc8 21.Qa5 Ne2 22.Ke2 b6 (22...Qg5 23.Qd5 Qe7 24.Kf1 Bg4=) 23.Qa3? (23.Qd5!?–/+) 23...Rc2–+ 24.Rd2 Qe6 (24...Qe5 25.Qe3 Rd2 26.Kd2 Qb2 27.Ke1–/+) 25.Kd1 (25.Qe3 Qc4 26.Ke1 Rc1 27.Rd1 Rd1 28.Kd1 Qc2 29.Ke1 Qb1 30.Ke2 Qa2 31.Kf3 Qd5 32.Kg3 Qd6 33.f4 Qg6 34.Kf2 Be4+=) 25...Rd2 26.Kd2 Qd5 27.Ke2 Qg2 28.Re1 h6 (28...Bg4 29.Kd3 Qf3 30.Re3 Bf5 31.Kc3 Qc6 32.Kd2 Qd7 33.Ke1+=) 29.Qg3 Qe4 30.Kf1 Qc4 31.Kg2 (31.Kg1 Qa2 32.Qf3 Be6–/+) 31...Qa2 32.Qe5 (32.Re7 Qd5 33.f3 Qd2 34.Kh1 Qc1 35.Re1 Qc6–/+) 32...Be6 33.Rd1 (33.Kg1 Qc2–+) 33...Bh3 (33...Bh3 34.Kg1 Qc4–/+; 33...Qc4 34.Rd4 Qc6 35.Kg1–+) 0–1. Billing,Georg (2125) – Bogert,J, corr Germany, 1993.

10.g3 Re5–/+

11.Qb3!? Nd5 12.f4 Re3 13.Qe3 Ne3 14.fg5 Nc2 15.Kd1 Na1 16.Bg2–+.

11.Be5 Qe5 12.Na3 (12.Qb3 Qa1) 12...Qe4! 13.Rg1 Nd3 14.Bd3 Qd3 15.Nc2 Bc5 –/+. Ohlsson,Kurt – Bergsaaker,Henric, corr, 1981.

11.gf4 Re3! 12.Be2 Qf4 13.fe3 Qh4 14.Kf1 Bh3 15.Kg1 Qg5.

11.gf4 Re3!–+ 12.Be2 (12.fe3 Qh4) 12...Qg2 Threatening mate... how? 13.Rf1 Re4 Do you see the mate threat? 14.Nc3 Rf4 (14...Rf4 15.Bd3 Bf5 (15...Qh2?! 16.Nd5–+) 16.Bf5 Rf5–+) 0–1. Leisebein,Peter – Rosner,Dirk, corr SOK–89–35, 1989.

11.gf4 Re3! 12.fe3? Qh4.

11.h4 Re3!

9.g3 Nd3

10.Bd3 a5?? 11.Be4?? (better is 11.Nd4+–) 11...Re4–/+ 12.0–0 Nc6 13.d3 Re6 14.a3 (14.a3 Bf8 15.Qc2+=) 1–0. jomunoz (1870) – prakeshdesai, net–chess.com, 2011.

10.Bd3 Nc6?? 11.Bc4+– Bg4 12.h3 Ne5? (12...Be6 13.Be6 Re6 14.a3+–) 13.hg4 (better is 13.Be5 Bf3 14.Bf7 Kh8 15.Bg7 Kg7 16.Qf3+–) 13...Ng4 (13...Nc4 14.Bc3 Bc3 15.Nc3 Qf6+–) 14.Rh4 Nf6 15.Ng5 h6 16.Bf7 Kf8 17.Be8 Ne8 18.Ne6 Kg8 19.Nd8 Rd8 20.a3 Ba5 21.Rg4 Rd7 22.Qb3 Kh8 23.Qa4 Rd5 24.Qe8 (24.Qe8 Kh7 25.Rg7) 1–0. jomunoz (1870) – rogeliovargas (2345), net–chess.com, 2011.

10.Ke2?? Nb2 11.Qe1 (11.Qb3 Nc6 12.Qb2–+) 11…Qd3 0–1. prakeshdesai – rajagopal (2000), net–chess.com, 2011.

10.Bd3 Qd3

11.a3 Ba5 12.Ne5? (better is 12.Bc3 Bb6 13.Qe2–/+) 12...Qd5 13.f3 f6 14.Ng4 (14.Qa4 Bd7 15.Nd7 Re3 16.Kd1 Nd7 17.Qd4 Qf3 18.Kc2 Qf5 19.Kd1–+) 14...Bg4 15.e4 (15.0–0 Bh3 16.Re1–+) 15...Re4! 16.fe4 (16.Kf2 Bb6 17.d4 Rd4 18.Bd4 Bd4 19.Kg2–+) 16...Qe4 (16...Bd1?! 17.ed5 Bb3 18.Nc3–/+) 17.Kf1 Qh1 18.Kf2 Bb6 19.d4 Qd1 20.Nc3 (20.h3 Qf3 21.Kg1 Bh3 22.Nc3 Qg2) 20...Bd4 21.Kg2 Qf3 0–1. jomunoz (1870) – pcmvr, net–chess.com, 2011.

11.a3 Bd6 12.a4 Bg4 13.h3?? (better is 13.Nc3 Nc6 14.Rc1–+) 13...Re3!! 14.de3 (14.de3 Qd1 Double attack; 14.fe3 Bg3 Mate attack) 14...Qd1 15.Kd1 Bf3 16.Ke1 Bh1 17.f4 Na6 18.a5 Nb4 19.Bc3 (19.Ke2 Nc2 20.Ra4 Bc6–+) 19...Nc2 20.Kf1 Na1 21.Ba1 b5 22.Nc3 Rb8 23.h4 b4 24.Ne4 (24.Nd1–+) 24...Be4 25.Ke2 Rb5 26.a6 b3 27.Bb2 Rc5 28.Kd1 Rc2 29.Bd4 Bb4 30.Ba7 (30.Bc3 Bc3 31.g4 Bf3) 30...Bf3 0–1. jomunoz (1870) – pierred (2760), net–chess.com, 2011.

11.a3!? Bd6 12.Qe2–/+ Qb3 13.Bc3 Nc6 –/+.

11.Bc3 Nc6 12.a3 Bc5 13.h3 Bf5 –+.

11.Nc3 Na6 12.a3 Bd6 13.Qa4 Bh3 14.Nb5? (better is 14.Ng5 Nc5 15.Qh4–+) 14...Bg2 15.Rg1 (15.Qg4 Bf8 16.Nc7 Bh1 17.Ne5 Re5 18.Be5 Nc7 19.Bc7 Ba3 20.Be5–+) 15...Bf3 16.Nd4 Re4 17.Rc1 (17.Qa6 Qa6 18.Nf3–+) 17...Rd4! 18.Bd4 (18.Qd4 Qe2 Mate attack; 18.Bd4 Qe2 Mate attack; 18.ed4 Qe2 Mate attack) 18...Qe2 0–1. prakeshdesai – pierred (2760), net–chess.com, 2011.

11.Nd4 c5 12.Qc2 Qc2 13.Nc2 Nc6 14.Nba3 Bf5 15.Nb4 Nb4 16.0–0 Nd3 17.Bc3 a6 18.Nc4 b5 (better is 18...Rad8!? 19.Nb6 Re6–+) 19.Nd6= Bh3 20.Ne8 Re8 21.Rfb1 c4 22.a4 Bf5? (better is 22...Bd7+/–) 23.ab5+– (23.ab5 ab5 24.Rb5+–) 1–0. pierred (2760) – lucianobalz (2125), net–chess.com, 2011.

11.Nd4 Nc6 12.Qe2 Ne5 13.Bc3 c5 –+.

11.Nd4 Nd7 12.Ne2 Bd6 13.0–0 Nc5 14.Nbc3 Bh3 15.Re1 Qf5 16.Nd4 Qg6 17.Ba3 Nd3 18.Bd6 Qd6 19.Qh5 Ne1 20.Qh3 Nc2! 21.Ndb5 (21.Nc2 Qd2 Double attack (21...Qd2 Decoy)) 21...Qd3 (21...Na1? 22.Nd6 cd6 23.Qf1+–; worse is 21...Qd2 22.Rd1 Qd1 23.Nd1+/–) 22.Rb1 Rec8 (22...Qd2 23.Rd1 Qd1 24.Nd1+/–) 23.Qf1 Qf1 24.Kf1 a6 25.Rb2 ab5 26.Rc2 c6 27.Rb2 Ra3 28.Ke2 Rd8 29.g4 Kf8 30.h4 Ke7 31.Kf3 Kd6 32.Ne4 Kc7 33.Nc3 g6 34.Ke2 f5 35.Kf3 fg4 36.Kg4 Ra5 37.Ne2 c5 38.f4 b4 39.Rc2 b6 0–1. pierred (2760) – pcmvr, net–chess.com, 2011.

11.Nd4 Qe4 12.Qf3 Qf3 13.Nf3=+ Bf5 14.0–0 Nc6 15.Nd4 Nd4–/+ 16.Bd4 b6 17.Bc3 Bc3 18.Nc3 Bd3 19.Rfc1 c5 20.Nd5 Rad8 21.Nf4 Be4 22.Ne2 Rd2 23.Nc3 Bc6 24.Kf1 Rdd8 ½–½. hal1958 – valpa, playchess.de, 2002.

11.Nd4 Bh3 12.Qb3 Qe4 13.f3 Qe7 (13...Qe3! 14.Qe3 Re3 15.Kf2 Re5–/+) 14.Nc3 c5 15.Nd5 Qg5 16.Nb4 cd4 17.e4 Nd7 18.Bd4 b6 19.Be3 (19.Rc1 Rac8 20.Rc3 Nc5=) 19...Qf6= 20.Kf2 Re4 21.Nd5 Qf5 22.Nf4 Rae8?? (22...Rf4 23.Bf4 Nc5+=) 23.fe4+– Re4 24.Ke1 Nc5 25.Qd5 Qd5 26.Nd5 f5 27.Kf2 Nd3 28.Ke2 Nb2 29.Rhc1 Bg4 30.Kf1 Kf7 (30...Bh3 31.Kg1 Rc4 32.Rab1+–) 31.Rc7 Ke6 (31...Kf8 32.Rac1 a5 33.Rc8 Re8 34.Bd4 Be2 35.Kg1+–) 32.Nf4 Kd6 33.Rac1 Re7 (33...Re8 34.Bd4 Bf3 35.Bb2 g5 36.Ba3 Ke5 37.Nd3 Kf6 38.Bb2 Ke6 39.Rh7 Kd5+–) 34.R1c6 Ke5 35.Re7 1–0. pierred (2760) – rogeliovargas (2345), net–chess.com, 2011.

11.Qe2 Qc2–+ 12.Bc3 Bg4 13.0–0 Nc6 (13...Qf5–+) 14.Bb4 Nb4 15.Qb5 Bf3 (better is 15...Qb2!? 16.Nc3 Bf3–+) 16.Qb4–/+ c5 17.Na3 Qd3 (17...Qd3 18.Qf4 Be2–/+; 17...cb4?! 18.Nc2 Rac8 19.Nd4= (worse is 19.Nb4 a5–/+)) 0–1. Schwarz – Brinkmann,Wilhelm, corr, 1985.

11.Qe2 Qc2 12.Bc3 Bg4 13.Bb4?? Qc1 (13...Qc1 14.Qd1 Qd1 15.Kd1 Bf3 16.Kc2 Bh1–+) 0–1. lucianobalz (2125) – rogeliovargas (2345), net–chess.com, 2011.

11.Qe2 Qd5 12.Ba3?? (better is 12.0–0–/+) 12...Bg4–+ (12...Bg4 13.Bb4 Bf3–+ (13...Qf3?! 14.Qf3 Bf3 15.Rg1–/+)) 0–1. lucianobalz (2125) – pcmvr, net–chess.com, 2011.

11.Ne5?? Qe4 (better is 11...Re5!? 12.a3 Bd6 13.Be5 Be5 14.Nc3 Bc3 15.dc3 Qc3 16.Ke2–+) 12.0–0 Re5 13.Be5? (13.d3 Qd5 14.e4 Qb5–+) 13...Qe5 (better is 13...Bh3 14.f3 Qe5 15.Nc3 Bf1 16.Kf1 Bc3 17.dc3–+) 14.Nc3 Bh3 (14...Nc6 15.f4 Qa5 16.Qb3–+) 15.Re1 (15.Qf3 Nc6 (15...Bf1?! 16.Qb7 Bd3 17.Qa8=; 15...Bc3?! 16.dc3 Nc6 17.Rfb1–+) 16.Rfb1 Bc8–+) 15...Nc6 16.d4?! (16.Qf3 Be6 17.Rec1–+) 16...Qa5 17.Qb3 (17.Ne2–+) 17...Bc3 18.Qb7 Rb8 19.Qc6 Be1 20.Rb1 (20.Qc2–+) 20...Bf2! 21.Kf2 Qd2 (21...Qd2 22.Kf3 Qg2 23.Kf4 Qf2 (23...Qc6?? 24.Rb8 Bc8 25.Rc8 Qe8 26.Re8) 24.Qf3 g5 25.Ke5 Re8 26.Kd5 Be6 27.Kc6 Qc2 28.Kb5 Rb8 29.Qb7 Bd7 30.Kb4 Rb7 31.Ka5 Qa2) 0–1. madik – rogubravo (1895), GameKnot tournament, 2008.

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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)
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