7.c3 d5 8.Qh5 g6 9.fg6 Ng6 10.Qh6 Qe7 (idea 11...Be6). Bendig.

7.Nf3 d5-+ 8.ed5 Na5 9.Bb5 (9.Qe2!?-+) 9...c6 10.dc6 bc6 11.Ba4 Qb6 12.c3? (12.Bc3 Nd5 13.Bb4 Qb4 14.Bb3-+) 12...Bc5 13.d4 (13.Bc1 Bf2 14.Kf1 Ba6 15.d3-+) 13...Qb2 14.dc5 (14.Nbd2 Qc3 15.dc5 Ba6-+) 14...Qa1 15.Bb3 (15.0-0 Qa2 16.Rf2 Qd5 17.Qd5 Nd5-+) 15...Bf5 16.Nfd2 (16.0-0 Rd8 17.Qc1 Nb3 18.ab3 Bb1-+) 16...Rd8 17.0-0 Bb1 18.Qh5 (18.Qb1 Qb1 (18...Rd2 19.Qa1 Nb3 20.ab3+/-; 18...Qc3 19.Ne4 Qe3 20.Kh1-+) 19.Nb1 Nb7-+) 18...Bg6 19.Qf3 Qb2 20.Nc4 Nc4 21.Bc4 Qa3 22.Qg4 Qc3 23.Qe6 Rd2 24.Rb1 Qe3 25.Kh1 Bb1 (25...Bb1 26.Qf7 Kd8 27.Qe7 Ke7 28.h3 Rd1 29.Bf1 Rf1 30.Kh2 Qf4 31.g3 Qd2) 0-1. bleusnake (2375) - marekt (2825), net-chess.com, 2021.

7.Nh3 Ba5 8.c3 (--> 7.c3 Ba5 8.Nh3).

7.Qh5=+ Kd7?? 8.Be6 1–0. pierre – laostew, ChessWorld.net, 2005.

8.Be2 0-0 (8...g6 A) 9.a3 Bc5 10.fg6 hg6 11.Nf3 a6 12.Nd5 Nd5–/+; B) 9.fg6 hg6 10.Nf3 Nac6 11.a3 Bc3 12.Bc3 d5–/+; C) 9.g4 Nac6 (9...d5 10.g5 Rf8 11.fg6 hg6 12.gf6 Rf6–/+) 10.h4 a6 11.h5 gf5 12.ef5 d5–/+; D) 9.Bd3 Bd7 (9...a6 10.Qf3 gf5 11.ef5 d5 12.Qh5 Kd7–/+; 9...Bc5 10.Na4 Bg1 11.Rg1 d5 12.g4 de4–/+; 9...Nac6 10.a3 Bc5 11.Na4 Bg1 12.Rg1 a6–/+; 9...c6 10.Qf3 gf5 11.ef5 d5 12.Qh5 Kd7–/+) 10.Qg4 h5 11.Qh4 g5 12.Qh3 Bc6–/+) 9.g4 (9.a3 Bc5 10.Nf3 d5 11.g4 d4 12.Na4 Bd6–+; 9.Qb1 d5 (9...b6 10.a3 Bc5 11.Qa2 Kh8 12.Nf3 Bb7–+; 9...c6 10.a3 Bc5 11.Nf3 d5 12.g4 d4–/+) 10.a3 Bc5 11.Nf3 de4 12.Ne4 Bb6–+) 9...d5 (9...Bd7 10.a3 Bc5 11.Nf3 Bc6 12.d4 ed4–/+; 9...c6 10.a3 Bc5 11.Nf3 b5 12.h4 d5–/+) 10.Bd3 (10.a3 Bc3 11.Bc3 Nac6 12.ed5 Nd5–/+) 10...Nc4 (10...b6!?–+ 11.a3 Bc3 12.Bc3 Nb7–+; 10...c6 11.Nf3 b5 12.a4 Nc4–+) 11.Bc4–/+ dc4 12.Qe2 Qd4 13.Nf3 Qc5 14.h4 b5 15.g5 Nc6 (15...a6 16.gf6 Rf6 17.a4–/+) 16.Nd5+= Ba5 (better is 16...Bf5!? 17.gf6 gf6 18.Rg1 Kh8+=) 17.gf6+/– gf6?? (better is 17...Bf5 18.Ne7 Ne7 19.fe7 Bg4 20.ef8R Rf8=) 18.Rg1+– Kf7 19.Ne5! Ne5 (19...Ne5 20.Qh5; 19...fe5 20.Qh5) 20.Qh5 Ng6 21.Qh7 (21.Rg6 Ke8 22.Rg8 Kd7 23.Bf6 Rg8 24.Qh7 Kc6 25.Qg8 Kb7+–) 21...Ke8 22.Qg6 (22.Rg6?! Bf5 23.Qh5 Bd2 24.Ke2 Bg6 25.Nf6 Rf6 26.Qc5 c3+–) 22...Rf7 23.Nf6 Ke7 24.0-0-0 Bb7 (24...c3 25.Ng8 Ke8 26.Nh6 cb2 27.Kb1+–) 25.Ng8 (25.Ng8 Rg8 26.Qg8+–) 1–0. Borrmann,Fritz – Cano de Meio,Gustavo Roman, CiF, 1987.

8.Qh5 Kd7 9.Be6+= Kc6 10.Qe2 a6 11.Nf3 Be6 12.fe6 Qc8 (12...Re8 13.d4 ed4 14.Nd4 Kb6 15.0-0-0=) 13.Nd5 Nd5 14.ed5 Kd5 15.a3 (15.0-0 Bc5 16.d4 Bb6=) 15...Bc5= 16.e7 Ke6 17.d4 Bb6 18.de5 fe5? (better is 18...de5 19.Ne5 Ke7 20.Ng6 Kf7 21.Nh8 Kg8+=).

8.Qh5 g6 9.fg6 Ng6–/+ 10.Be2 Be6 11.Nd5 Bc5 12.Bc3 Nc6+=.

8.fg6 hg6 9.Nf3 Bc3 10.Bc3 d5 11.ed5 Nd5 12.0-0 Nc3 13.dc3 Qe7 14.Bd3 f5–+ 15.Qd2 Qc5 16.Rf2 e4 17.Re1 Ne7 18.Be4 fe4 19.Re4 Bf5 20.Re5 Qb6 21.Qe2 Rh7 22.Ng5 Rg7 23.Ne6 Be6 24.Re6 c6 25.Rd6 Rf7 26.Rd4 Rf2 27.Kf2 Rd8 28.Qc4 Nd5 29.Kf3 Qb2 30.Qd3 Qc3 31.Qc3 Nc3 32.Rc4 Nb5 33.a4 Rd4 34.Rd4 Nd4 35.Ke3 Nc2 36.Kd3 (36.Kd2 Nb4–+) 0–1. Crafty 19.01 – Fritz 5.32, 2004.

8.fg6 hg6 9.Nf3 Bg4 10.a3 Bc5 11.Na4 Bd4 12.c3 Na5 13.Be2 Bf3 14.Bf3 Bb6 15.Nb6 ab6 16.d3 d5 17.0-0 de4 18.de4 Nc4 19.Bc1 Qd6 20.Bg4 Qc5 21.Rf2 Nd6 22.Qd3 f5 23.ef5 gf5 24.Be3 Qc4 25.Be2 Qh4 26.g3 Qe4 27.Bg5 Qd3 28.Bd3 e4 29.Bc2 Ra5 30.Bb3 Rh5 31.Bf6 Nd5 32.Bd4 Rh3 33.Rd2 Ke7 34.Rad1 Rb5 35.Bd5+= Rd5 36.Bf6 Kf6 37.Rd5 Kg5 38.Kg2 Rh8 39.a4 Ra8 40.R1d4 c5 41.h4 Kg4 42.Rd1 Nc4 43.Re1 Re8 44.Rd7 Rg8 45.Rb7 Rg6 46.Re7 Nd2 47.Re2 Nb1 48.Rf2 Nc3 49.Rf4 Kh5 50.Rf5 Kh6 51.h5 Rc6 52.g4 Na4?? 53.Kg3 Rg6 54.hg6 Kg6 55.Rfe5 b5 56.R5e6 Kg5 57.Rg7 1–0. Crafty 19.01 – Comet B50, 2004.

8.fg6 hg6 9.Nf3 Bg4 10.Nd5 Nd5 11.ed5 Na5 12.Bb5 c6 13.dc6 bc6 14.Bd3 f5 15.0-0 Bf3 16.Rf3 Bd2 17.Qd2 Qb6 18.Kh1 Qb2 19.Rff1 Qa3?? 20.Qg5+= Rg8?? 21.Bf5!+– c5 22.Qf6 gf5 23.Qe6 Kd8 24.Qg8 Kd7 1–0. Crafty 19.01 – Fritz 6, 2004.

8.Qf3 Bb6 9.Qh5+= g6 10.fg6 Ng6 11.Ne2 (11.Nf3 Nce7+=) 11...Qd7 (11...f5 12.Rf1 Qh4 13.Qh4 Nh4 14.g3 Ng2 15.Kd1 fe4 16.Nbc3–+) 12.Nbc3+= Qg4 (12...f5 13.Rf1 Rf8 14.Nd5+=) 13.Qg4 Bg4 14.Nd5 (14.h3 Be2 15.Ne2 Nh4+=) 14...Rf8 15.h3 Bd7 (15...Be2 16.Nb6 Bc4 17.Na8–+) 16.Rf1 Exerts pressure on the backward pawn 16...f5 17.ef5 Bf5 18.0-0-0 (better is 18.g4 Bc2 19.Rc1+=) 18...0-0-0?? (18...Kd7 19.Bb5–/+) 19.g4?? (better is 19.Nb6 Kb8 20.Nd5+–) 19...Be4–/+ 20.Nb6 (20.Nf6 Bg2 21.Be6 Kb8–/+) 20...ab6 21.Be6 Kb8 22.Rf8 (22.Bf5 Bg2 23.Rg1 Bf3–/+) 22...Rf8–+ 23.Ng3 (23.Re1 Rf2–/+) 23...Bg2 24.Bf5 Nce7 25.h4 (25.Be4 Bh3 26.Rh1 Bg4 27.Rh7–+) 25...Nf5 26.Nf5 Bf3 27.Rg1 Bg4! 28.Rg4 Rf5 Do you see the mate threat? 29.d4 ed4 (29...Rf4 30.Rf4 ef4 31.h5–+) 30.Bd4 Rf4 (30...c5 31.Bb2–+) 31.Rf4 Nf4 32.Bf2 (32.Kd2 b5–+) 32...d5 (32...Kc8 33.Be3 Ng2 34.Bg5–+) 33.Kd2 Ka7 (33...Ne6 34.Kd3–+) 34.Bg3 (34.Ke3 Ne6–+) 34...Ne6 35.Be5 b5 36.c3 (36.h5 Kb6–+) 36...Ka6 (36...Ka6 37.Ke3 Ka5–+; 36...h5 37.Bf6–+) 0–1. Fischer,Detlev – Schulte,Stefan, BdF, 1981.

8.Qf3 g6 9.fg6 Ng6 10.g3–/+.

9.Qh4 gf5 10.Qh5 Kd7 11.ef5 d5–/+.

9.Qh4 Ng8?? 10.fg6+– h6?? (10...Qd7 11.Bf7 Kf8 12.Qh7 Rh7 13.gh7 Qf7+=) 11.g7 Rh7 12.Qh5 (12.Qh5 Kd7 13.Qf5 Ke7 14.Qh7+–) 1–0. druhynejhorsi (1605) – kumader, 2012.

10.Ne2 Qe7 11.Nbc3 Be6 12.Nd5 Bd5 13.Bd5 0-0-0 14.Rf1 (14.c3 Qd7 15.Qh3 Qh3 16.gh3 Rhf8=+) 14...Qg7 15.0-0-0 Nce7 16.Ba2 (16.Be6 Kb8 17.Qg4 h5=+) 16...a6 (16...Kb8!?=+) 17.Ng3= d5 (17...Rhf8 18.Qg4 Kb8 19.Nh5=) 18.Qg4 (18.Qh3 Kb8 19.Nh5 Qh6 20.Nf6 Qh3 21.gh3 de4+=) 18...Kb8+= 19.Nh5 Exerts pressure on the backward pawn 19...Qh6 20.Nf6 de4 d2 seems the pivot of the position 21.Nd7 Ka8 22.Rf6 e3 23.de3 Qe3 24.Kb1 Bd2 (24...Nf4 25.Ne5 h5 26.Nc4 hg4 27.Rd8 Rd8 28.Ne3 Ng2 29.Bc1 Ne3 30.Be3=+) 25.Qa4+= c6? (better 25...a5!?+=) 26.Rd6+- Nd5?? (better 26...Bc3 27.R6d3 Rd7 28.Rd7 Qb6+-) 27.Bd5 cd5 (27...Rd7 28.Rd7 cd5 29.Rd5 Be1+-) 28.Ra6! ba6 29.Qa6 (better 29.Qc6 Ka7 30.Nc5 Qc5 31.Qc5 Ka8 32.Rd2+-) 29...Qa7= 30.Qc6 Qb7 31.Qa4 Qa7 32.Qc6 ½-½. sasikumar (2775) - polog (2070), net-chess.com, 2021.

10.Nf3 Qe7 11.Nh4= Qg7 12.Nf5 Bf5 (better is 12...Qf8!?=) 13.ef5+/– (13.Qf5 Nf4 14.g3 Ne7 15.gf4 Nf5 16.ef5 Qg2–+) 13...0-0-0 14.fg6 hg6 15.Qg4 f5 (better is 15...Kb8!?+/–) 16.Be6+– Kb8 17.Bf5! Ne7 (17...gf5 Exploits the pin 18.Qg7) 18.Bd3 Rdf8 19.Nc3 Rf4 20.Qd7 Rf7 21.Qb5 (21.Bc4 Bc3 22.Bc3 Nd5+–) 21...Nc6 (21...Bc3 22.Bc3 (worse is 22.dc3 Qf6+/–) 22...Qf6 23.0-0-0+–) 22.0-0-0 (22.Be4!? a6 23.Qb3 Nd8+–) 22...Bb6 23.Be4 Rd7 (better is 23...Nd4 24.Qd5 Nc6+–) 24.Bc6 bc6 25.Qc6 (25.Qc6 Rf7 26.Rde1+–) 1–0. Grund,Karl – Kallab,Kurt Josef, corr SOK–88–24, 1988.

11.0-0 Qg4 12.Qg4 Bg4 13.Nc3 Rf8 14.Nd5–/+.

11.0-0 Qg4 12.Qg4 Bg4 13.Ne1 0-0-0 14.Rf6 Rhf8 15.Rf8 Rf8 16.h3 Bb6 17.Kh2 Bd7 18.Nc3 Rf2 19.Rd1 Nf4 20.Nd5 Nd5 21.ed5 (21.Bd5 Nd4+=) 21...Nd4–/+ 22.Bd3 h5 23.Bg6 h4 24.Be4 Rf1 (24...Bc5 25.Nd3 Rf7 26.Nc5 dc5 27.g4=) 25.Bd3 Rf2 (25...Rf4 26.g4–/+) 26.c3 (26.Be4 c6 27.Bd4 Bd4 28.Nf3–/+) 26...Ba4 (26...Ne2 27.Rb1–/+) 27.Rb1 Nb3 28.Nf3 Nd2 29.Nd2 Rd2 30.Be4 Bb3 31.Bc1 Rd1 The mate threat is Bg1 32.Bf5 Kb8 33.g3?? (better is 33.Bg4 Bc2 34.Bd1 Bb1 35.g4–/+) 33...Bg1 (33...Bg1 34.Kg2 Bd5 35.Be4 Be4) 0–1. Sternik,Ryszard – Milewski,Adam, Olsztyn Poland, 1990.

11.Nc3 Qg4 12.Qg4 Bg4 13.Nd5 Rf8 14.Rf1=+.

11.Nc3 Qg4 12.Qg4 Bg4 13.Nd5 Rf8 14.h3 Bf3 15.gf3 f5 16.Rb1 fe4–/+.

11.Rf1 Qg4 12.Qg4 Bg4–/+ 13.Bd5 Nf4 14.Bc6–/+.

11.h3 Nd8 12.Nh4= Qg7 13.Nf5 Qf8 14.Nc3 Be6 15.Nd5 c6 16.Nde3 Bc7 17.0-0 (17.Qf3 Bb6=) 17...Kd7 18.d4 (18.Be6 Ne6 19.Kh1 Ngf4=) 18...Nf4 19.Qf3 Bc4 20.Nc4 Rg8 21.Rf2 Nde6 22.h4 (22.Qe3+=) 22...Rg6 (22...d5 23.Nd2–/+) 23.de5 (better is 23.Rd1 Kc8 24.Nce3=) 23...fe5?? (better is 23...de5 24.h5 Rg8 25.Rd1 Kc8+=) 24.Rd1+– Kc8? (better is 24...d5 25.Ne5 Kc8 26.Ng6 hg6+–) 25.Nfd6 (25.Ncd6 Kb8 26.Be5 Ng2 27.Rg2 Nc5+–) 25...Kb8 26.Be5 b5 27.Nb5?? (better is 27.Bf4 bc4 28.Be5 Qf3 29.Rf3+–) 27...Qc5?? (better is 27...cb5 28.Bc7 Kc7+/–) 28.Rd8! Kb7 (28...Nd8 29.Bc7) 29.Nbd6 (29.Bf4?! Rd8 30.Bc7 Nc7 31.Nc7 Qc4=) 29...Ka6 30.Ra8 (30.Bf4?! Rd8 31.Be3 Nd4 32.Bd4 Qd4+/–) 30...Rg2 31.Kh1 (better is 31.Kf1 Bd6 32.Nd6 (32.Bd6 Qc4 33.Ke1 Rg1 34.Rf1 Nd4 35.Ra7 Kb6 36.Bc5 Kc5 37.Ra5 Kb6 38.Rg1 Nf3 39.Kf2 Ng1–+; 32.Rg2?! Qc4 33.Kg1 Be5=; 32.Bf4?! Rf2 33.Qf2 Qc4 34.Kg1 Bc5+–) 32...Qe5 33.Rg2 Qa1 34.Kf2 Qd4 35.Kg3 Qd6 36.e5+–) 31...Qf2 (31...Rf2!? 32.Qe3 Qe3 33.Ne3 Ng6=) 32.Qf2+/– Rf2 33.Bd4?? (better is 33.c3+=) 33...c5 (better is 33...Nd4 34.Ne5 Bd6–+) 34.Bf2+– 1–0. Makowski,Zbigniew – Sternik,Ryszard, Rzeszow Poland, 1987.

11.h3 Nce7 12.Nc3 Bc3 13.Bc3 Qa4 14.Bd3 0-0 (14...c5 15.Rc1–/+) 15.0-0+= Be6 (15...Nf4 16.Qh6+=) 16.Rfb1 (16.Rab1 Nf4 17.Qh6 Qc6+= (17...Nd3 18.Ng5 Rf7 19.Nf7 Bf7 20.cd3+–)) 16...b6 17.Rb4 Qc6 18.Nh4 (18.Ba6!?+=) 18...a5 19.Rb2 Nf4 20.Qf3 Rf7 21.Bb5 Qc5 22.Kh2 d5 23.ed5 Ned5 24.Bf1 c6 25.Rb3 (25.g3 Rg7–+) 25...a4 (25...Nc3?! 26.Rc3 Qd4 27.Rb1–/+) 26.Rb2 Nc3 27.Qc3 Qc3 28.dc3 b5 (28...Rb8 29.Rab1 Nd5 30.c4–+) 29.c4 (29.g3 Ng6 30.Ng6 hg6–+) 29...bc4 30.Rab1 Rd7 31.Rb6 (31.Nf3 c3 32.Rb7 Rad8 33.Rd7 Rd7–+) 31...Rd6 (31...Rd2!? 32.Rc1 Bd5 33.Rb7–+) 32.R1b4 c3 33.Bc4 Rd2 34.Be6 Ne6 35.Rg4 Kh8 36.Rc6 Nd4 37.Rc3 Rc2 (37...Nc2 38.Rc7 Rg8 39.Ra4+=) 38.Rc2 Nc2 39.Nf5 h5 (worse is 39...Na3 40.Nh6 Rf8 41.Ra4+=) 40.Rg3 Rc8 41.Rg6 ½–½. Bendig,Frank – Knorr,Bernd, corr SP17, 1992.

11.h3 Nce7 12.Nc3 Bc3 13.Bc3 Qc6 14.Bd3 Bd7 15.0-0 0-0-0 16.g3 Rhg8 17.Kh2 (17.Qh7? Rh8 18.Qf7 Rdf8–+) 17...Rg7 18.Nh4 Rdg8 (18...Nh4!? 19.Qh4 Rf7+=) 19.Rf6= Nh4 20.Qh4 Rg3 21.Qg3 Rg3 22.Kg3 Ng6 23.a4 (23.Rf7 h5 24.Rf6 Be8+=) 23...Be8+= 24.Rf2 (24.Kh2 Qc5+=) 24...Qd7 25.Kh2 (25.Be2 Qe7 26.Bg4 Bd7–/+) 25...Nf4–/+ 26.Rf3 Bg6 27.Re3 a6 28.a5 Qc6 (28...Qc6 29.Kg3 Kd7–/+) 0–1. Bonca,Robert Simeon (1800) – Nemec,Zdenek (1875), b2–b4.com, 2004.

11.Nh4 Qg4–/+ 12.Qg4 Bg4 13.Ng6 hg6 14.0-0 Bb6 15.Kh1 f5 16.ef5 Bf5 17.c3 (17.d3 Rb8–+) 17...0-0-0 18.a4 Rh4 19.Bb3? Rdh8 20.h3 a5 (20...Rh3!? 21.gh3 Bh3 22.Kh2 Bf1 23.Kg3 Rh3 24.Kg4–+) 21.Na3? (21.Kh2 Bd3 22.Rf7 Rf4–+) 21...Ne7 (21...Rh3!? 22.gh3 Bh3 23.Be6 Be6 24.Kg2 Bh3 25.Kg3 Bf1 26.Rf1–+) 22.d4? (better is 22.Nc4–+) 22...ed4 23.cd4 (23.Nc4 Ba7 24.cd4 Bh3 25.gh3 Rh3 26.Kg2 Rb3 27.Rab1–+) 23...Bh3! (23...Bd4?! 24.Bd4 Rd4 25.Kg1–+) 24.gh3 Rh3 25.Kg2 Rb3 (25...Rb3 26.Nc4 Nf5 27.Nb6 cb6–+) 0–1. Woschkat,Karl_Heinz – Koerner,S, BdF, 1985.

14.0-0 a6 A) 15.Rae1 Kd7 (15...b5 16.Bb3 a5 17.Rb1 Kd7 18.h3 b4–/+; 15...Rf8 16.h3 Bf3 17.Rf3 b5 18.Bd5 Nge7+=; 15...h6 16.h3 b5 17.Bd5 Bd7 18.Nh2 Ke7+=; 15...Rd8 16.h3 Bd7 17.d4 ed4 18.Nd4 Nge5+=) 16.a4 Nf4 17.Kf2 Rhf8 18.Rb1 b6–/+; B) 15.h3 Bd7 (15...b5 16.Bb3 Bd7 17.Rae1 a5 18.d3 b4–/+) 16.d4 b5 17.Bd5 Nf4 18.Rae1 Nd5–/+; C) 15.a4 f5 16.Rab1 b6 17.Bd5 Nge7 18.Bc6 Nc6–/+.

14.0-0 Ke7 15.Rab1 (15.h3 Be6 16.Be6 Ke6 17.Rab1 b6 18.g3 Rad8–/+; 15.Rae1 Be6 (15...Nf4 16.h3 Be6 17.Be6 Ke6 18.d4 Rag8+=; 15...Rhb8 16.Kf2 Rf8 17.Kg3 Be6 18.Be6 Ke6–/+; 15...Rab8 16.h3 Be6 17.Be6 Ke6 18.d4 ed4–/+; 15...a6 16.d3 Raf8 17.Bd5 Nf4 18.Bc6 bc6+=; 15...Rhf8 16.h3 Be6 17.Be6 Ke6 18.Rb1 Rab8–/+) 16.Bb5 Rhg8 17.Bc6 bc6 18.Kf2 Rab8–/+) 15...Rab8 (15...Rhb8 16.Kf2 Nf4 17.Rb2 f5 18.ef5 Bf5+=) 16.h3 (16.d3 Nf4 17.Kf2 f5 18.ef5 Rhf8+=) 16...Be6 17.Be6 Ke6 18.g3 (18.d4 Kd7+=) 18...b6 (18...Rhd8–/+) 19.d3 Rbd8 20.Rf2 Rhg8 21.Kh2 Rb8 (21...d5 22.ed5 Rd5 23.g4–/+) 22.Rbf1+= Nf8 (22...Nge7 23.d4 Kd7 24.g4=) 23.Nh4 (23.d4 ed4 24.Nd4 Nd4 25.Rf6 Kd7 26.Bd4 Ne6=) 23...Nd7+= 24.Nf5 b5 25.Ne3 (25.Bd2 Ne7+=) 25...Ne7–/+ 26.g4 c5 27.Rb1 Nc6 (27...d5 28.ed5 Nd5 29.Nd5 Kd5 30.Bd2–/+) 28.Nd5+= Kf7 (28...b4 29.ab4 cb4 A) 30.Bb4? A1) 30...Nb4?! 31.Rb4 (31.Nb4? a5–+) 31...Rb4 32.Nb4=; A2) 30...a5–+; B) 30.Nb4+=) 29.Rbf1 Rg6 30.Rb1 (30.g5 b4 31.Nf6 Rf6 32.Rf6 Nf6 33.Rf6 Ke7+=) 30...a5–/+ 31.Bd2 h6 (31...b4!?–/+) 32.c3+= c4 33.dc4 bc4 34.Rb8 Ncb8 35.Ne3 Nc5 36.Nc4 Ne4 37.Re2 d5 38.Na5 Nd7 39.Nb3 (39.c4 Nd2 40.Rd2 d4+=) 39...Ke6 (39...Nb6 40.Na5 Rg8 41.Bh6 Ra8 (41...Nc3?! 42.Rb2 Nd7 43.Rc2+=) 42.Re4 de4–+) 40.Be1? (better is 40.c4!?+=) 40...Nb6 (40...f5 41.gf5 Kf5 42.Na5–+) 41.Nc1 (41.Na5 f5 42.Rb2 Nd7 43.gf5 Kf5–/+) 41...Rg8 42.Ra2 Na4 43.Ne2 Rc8 44.Kg2 f5 45.gf5 Kf5 46.Kf3 (46.Bd2 h5–+) 46...Nac3 47.Nc3 Nc3 (47...Rc3?! 48.Bc3 Nc3 49.Ra1=) 48.Rc2 d4 49.Bc3 Rc3 50.Rc3 dc3 51.Ke3? (51.Ke2 e4 52.a4–+) 51...e4 52.Ke2 Ke5 (52...Ke5 53.a4 Kd4–+) 0–1. Grund,Karl – Popow,BV, corr ICCF EU/M/Gr/267, 1985.

14.0-0 f5 15.Rab1 fe4 16.Ng5 Nd8 17.h3 Bd7 18.Ne4 Ke7 =.

14.Rb1 A) 14...Rb8 15.Rf1 Rf8 (15...Ke7 16.Rf2 a6 17.d3 Rhf8 18.h3 Bf3+=; 15...Kd7 16.d3 a6 17.Kd2 b5 18.Bb3 Rhf8+=; 15...a6 16.h3 b5 17.Bb3 Bd7 18.d4 Rf8+=) 16.Bb5 Kd7 17.d4 a6 18.Bc6 bc6+=; B) 14...0-0-0+= B1) 15.Rf1 Rhf8 (15...Nf4 16.g3 d5 17.gf4 dc4 18.fe5 Bf3+=) 16.h3 Bd7 17.g4 Nf4 18.Rh1 h5–/+; B2) 15.0-0 Nf4 (15...Rhe8 16.Kf2 Nf4 17.g3 d5 18.gf4 dc4–/+) 16.g3 d5 17.gf4 dc4 18.Kf2 Rhe8–/+.

14.Rf1 f5 15.Rb1 fe4 16.Ng5 Nh4 17.Rf2 Bc8 18.Ne4 Kd8 =.

12.0-0? Bd7 13.Nc3 0-0-0 14.Nd5 Rdf8 15.Rae1 (15.Bc1 f5 16.d3 h6–/+) 15...Nce7 (15...f5 16.c3–/+) 16.Ne7 Qe7 17.Rd1 (17.Qh6 f5 18.ef5 Bf5–/+) 17...Qg7 (17...Nf4 18.Qh6–+) 18.Nh2 (18.Ne1 Bb6 19.Kh2 Ne7–/+) 18...b5 (18...Bb6 19.Kh1–/+) 19.Bd3 (19.Be2 Rhg8 20.Bg4 Bb6 21.Kh1 Nf4 22.Rf4 ef4 23.Qb5 Bg4 24.Ng4 Qg6 25.Qf5 Qf5 26.ef5 Rg5–+) 19...Bb6 20.Kh1 Nf4 (20...Rhg8!? 21.g4–+) 21.Rf4–/+ ef4 22.Qd5? (better is 22.Bb5 Rhg8 23.Bd7 Kd7 24.Qe2–/+) 22...c6 23.Qd6 Rhg8 24.Bf1 Bh3! 25.Qc6 (25.gh3 Qg1) 25...Kb8 26.e5 fe5 27.Qd5 (27.Qd5 Rf5 28.Re1–+). Tidemalm,Gustav – Richardson,Torsten, corr SSKK SWE, 1986.

12.0-0? Kd8!? 13.Ne1 Nf4 14.Qh4 Nh3 15.Kh2–+.

12.Nc3!?+= Bc3 13.Bc3 Kd8 14.g3+=.

12.Nc3 Bc3 13.Bc3 Nd8 14.Nh4 (14.Rb1 Nf7=) 14...Be6 15.Nf5 Qf8 16.Bb5 c6 17.Ba4 Nf7 18.0-0 0-0-0 (18...b5 19.Bb3 d5 20.g3=) 19.d4 (19.Bb3!? d5 20.Bb4+=) 19...Nf4–/+ 20.Rf4 ef4 21.d5 cd5 (21...Bd5 22.ed5) 22.ed5 (22.Bf6 Kb8 (22...de4? 23.Bg7+–) 23.Be7 Qg8 24.Bd8 Qd8+=) 22...Bd7 23.Bd7 Rd7 (worse is 23...Kd7 24.Bf6 Ne5 25.Bh8 Qh8 26.Rf1+/–) 24.Bf6 Rg8 25.Qh7 Kb8 (25...f3 26.g4 Kb8 27.Kf2+=) 26.Rf1+= Ne5 (better is 26...f3 27.Rf3 Ng5 28.Qd7 Nf3 29.Kf2 Qf6 30.gf3 Rg5=) 27.Qh4?? (better is 27.Be5 Rh7 28.Bd6 Qd6 29.Nd6 Rh3 30.Rf4 Ra3 31.c4+=) 27...Rf7?? (better is 27...Rg6 28.Be5 de5–+ (28...Qf5?! 29.Qh8 Kc7 30.Bf4 Qd5 31.Qc3 Kb8 32.Qd2–/+)) 28.Be7+/– Qc8 (28...Rg2 29.Kg2 Qg8 30.Kh2 Rf5 31.Rf4 Nf3 32.Rf3 Rf3 33.Bd6 Ka8 34.c4+=) 29.Bd6+– Ka8 30.Nh6 (worse is 30.Be5 Rf5 31.Bf4 Qc2–/+; 30.Qf4 Nc4 31.Bb4 Rg2 32.Kg2 Rf5+/–) 30...Rh7 (30...Nc4 31.Nf7 Nd6 32.Nd6 Qc5 33.Rf2 Qd6 34.Qf4 Qa3 35.Kh2+–) 31.Be5 Qc2 32.Rf2 (32.Ng8 Rh4 33.Bf4 Qc5 34.Kh2 Qc4–+) 32...Qc1 (32...Qb1 33.Kh2 Qb6 34.Bf4+– (34.Ng8 Rh4 35.Rc2 a5+=)) 33.Kh2 f3 (33...Qc5 34.Rf4 Re8 35.Rd4+–) 34.Qf4 (34.Ng8?! Rh4 35.Rf3 b5+=) 34...Qf4 35.Bf4 Rd8 36.d6 fg2 37.Rg2 b5 38.Rg8 Rhd7 39.Rd8 Rd8 40.Nf5 Kb7 41.Bg5 Rd7 42.Be7 (42.Kg3 Kc6+–) 42...Kc6 (42...a5 43.Ne3+–) 43.h4 (43.h4 Rb7 44.h5+–) 1–0. Bungo,G – Acevedo Villaba,A, corr ICCF, 1994.

13.0-0-0 0-0-0 14.Ne2 (14.Nd5 Nce7 (14...Nge7 15.g4 Nd5 16.Bd5 Qg6 17.Qg6 hg6–/+) 15.Ne7 Ne7 16.g4 Bb6 17.d4 Qg6–/+) 14...Bb6 (14...Nce7 15.d4 c5 16.dc5 dc5 17.Rhf1 b5–/+; 14...Nge7 15.g4 Be8 16.Qh4 h5 17.d4 Bd7–/+; 14...Nf8 15.g4 Ne6 16.d4 Ng5 17.Ng5 fg5–/+; 14...Qe7 15.Rhf1 Rdf8 16.g4 Bb6 17.Bd5 Qg7+=; 14...Rhe8 15.Rhf1 Nce7 16.d4 c5 17.dc5 dc5+=) 15.Rhf1 (15.g4 Na5 16.Ba2 Bc6 17.d3 d5–/+) 15...Nce7 (15...Na5 16.Ba2 Rhe8 17.g4 Bc6+=) 16.d4 ed4 (16...Rde8 17.g4 ed4–/+) 17.Nfd4 Ne5 18.Ne6 Qg8 (18...Qg2 19.Be5 fe5 20.Nd8 Kd8 21.Rf3–/+) 19.Be5 Be6 (19...de5 A) worse is 20.Nd8 Qc4 21.Rd7 Be3 22.Kb1 Qb5 (worse is 22...Kd7 23.Nf7 Qb5 24.Ka2+=) 23.Ka1 Qd7–/+; B) 20.Rf6 Qg2 21.Nd8 Rd8 22.Rd7 Kd7 23.Be6 Kc6 24.Bg4 Rd6 25.Qe5+–) 20.Be6 Qe6 21.Bf6 Rhf8 22.Qf3 (22.Qg4 Qg4 23.hg4 Rde8–/+) 22...Ng8 23.e5 Rde8 (23...Nf6?! 24.ef6 Bc5 25.Kb2=) 24.Nf4 Qa2 25.Qb3 Qb3 26.cb3 Nf6 (26...de5 27.Nh5 Bc5 28.b4–/+) 27.ef6 Rf6 (27...Be3 28.Kc2 Rf6 29.Nh5 Rf1 30.Rf1–/+) 28.Nd5+= Rf1 29.Rf1 Bd4 30.Rf7 c6 ½–½. Pommerel,Wim – Shlapkin,Viktor Yakovlevich, corr ICCF EU/M61, 2001.

13.0-0-0 Rb8 A) 14.Nd5 Nce7 (14...Kd8 15.Rhf1 b5 16.Bb3 Rf8 17.d4 b4–/+; 14...b5 15.Bb3 b4 16.a4 Nce7 17.Ne7 Ke7–/+; 14...a6 15.Rhf1 Rf8 16.Nh4 Kd8 17.Nf5 Bf5+=; 14...Rf8 15.Nh4 Kd8 16.Nf5 Bf5 17.ef5 Nge7+=) 15.Ne7 Ke7 16.g3 b5 17.Bb3 c5–/+; B) 14.Bb3 Bc3 (14...Kd8 15.Ne2 Bb6 16.g4 Kc8 17.Rhf1 Nge7+=) 15.Bc3 Kd8 16.g3 Rf8 17.Nh4 Nge7–/+; C) 14.Rde1 Bc3 15.Bc3 b5 16.Bb3 b4 17.ab4 Nb4–/+; D) 14.Rdf1 Bc3 15.Bc3 Kd8 16.g3 Rf8 17.d3 b5+=.

13.0-0-0 Bc3 14.Bc3 0-0-0 15.g3 Rdf8 16.d4 ed4 17.Bd4 Nd4–+.

13.Rb1 A) 13...0-0-0 A1) 14.Nd5 Nce7 (14...Nge7 15.0-0 f5 16.ef5 Nf5 17.Qg5 Rhg8–/+; 14...Nf4 15.Nf4 Qg3 16.Kd1 Qf4 17.Bd5 Bb6–/+) 15.Ne7 Ne7 16.g4 Bc6 17.Bd3 Ng6–+; A2) 14.Ne2 Nce7 (14...Nf4 15.Nf4 Qg3 16.Kd1 Qf4 17.Bd5 Bb6–/+) 15.0-0 f5 16.ef5 Nf5 17.Ng5 Ngh4–/+; B) 13...Bc3 14.Bc3 0-0-0 15.g3 Rdf8 16.d3 f5 17.Bd2 fe4–/+; C) 13...Rf8 14.g4 Bc3 15.Bc3 0-0-0 16.Rg1 Nf4 17.Qh4 f5–/+.

13.Nd5 0-0-0+= A) 14.g4 Nce7 (14...Nge7 15.c3 Nd5 16.Bd5 Qg6 17.Qg6 hg6–/+) 15.Ne7 Qe7 16.0-0-0 Qg7 17.Kb1 Nf4–/+; B) 14.Rb1 Nce7 (14...Nge7 15.0-0 f5 16.ef5 Nf5 17.Qg5 Rhg8–/+; 14...Nf4 15.Nf4 Qg3 16.Kd1 Qf4 17.d3 Qg3–/+) 15.Ne7 Ne7 16.g4 Bc6 17.Bd3 Ng6–+; C) 14.0-0 Rdf8 (14...Rhf8 15.Bc1 f5 16.d3 f4 17.Rb1 Nge7–/+) 15.d3 f5 16.Bc1 f4 17.Rb1 Nge7–/+.

13.Rf1 A) 13...Rf8 A1) 14.Bd3 Bc3 (14...Nce7 15.Ne2 0-0-0 16.Rb1 f5 17.ef5 Bf5–/+) 15.Bc3 0-0-0 16.g3 Nge7 17.g4 Ng6–/+; A2) 14.g4 Bc3 15.Bc3 0-0-0 16.Kd1 Nf4 17.Qh4 h5–/+; A3) 14.Ne2 f5 15.Ng5 Nce7 16.Qh7 Qf6 17.Qh6 0-0-0=; B) 13...Bc3 14.Bc3 0-0-0 15.g3 Nge7 16.g4 Ng6 17.Ng1 Nf4–+.

11.0-0 Bb6 12.Kh1 Qd7 13.Nc3 Qg4 14.Qg4+=.

11.0-0 c6 12.d4 Qb6 13.Bb3 c5?! (13...Bd7) 14.Nbd2 cd4 (14...Bd2 15.Nd2 cd4 16.Nc4) 15.Nc4 Qc7 (15...Qc5!? 16.Na5 Qa5 17.Bd4) 16.Nd4! Bb6 (16...ed4 17.Rf6! Bb6 18.Nd6) 17.Rf6 Bc5 (17...Bd4 18.Bd4 ed4 19.Nd6 Kd7 20.Be6) 18.Rd1! Rf8 (18...ed4 19.Nd6! A) 19...Qd6 20.Bf7 Kd7 21.Rd6 Bd6 (21...Kd6 22.Bg6 Ng6 23.Qd5) 22.Rd4 Rf8 23.Qc5 Rf7 24.Qd6 Ke8 25.Qd8; B) 19...Bd6 20.Bf7 Kd8 (20...Kd7 21.Rd4 Rf8 22.e5) 21.Rd4 Qc2 22.Rdd6 Kc7 23.Be5) 19.Nd6! Kd7 (19...Kd8 20.Rf8 Nf8 21.Qe8; 19...Bd6 20.Rf8 Kf8 21.Qh7) 20.Ba4 (20.Ba4 Nc6 21.Qh7 Nge7 22.Qh3) 1–0. Poniakov – Krasilnikov, corr, 1984.

11.Rf1 Qd7 12.Nc3 Kd8 13.Nh4 Bc3 14.Ng6–/+.

12.0-0-0 b5 A) 13.Be2 b4 (13...Rb8 14.d4 b4 15.ab4 Rb4 16.Ba3 Rb8–+) 14.ab4 Bb4 15.d4 Qb6 16.Rhf1 Rb8–+; B) 13.Bb3 b4 14.ab4 Bb4 15.Rdf1 d5 16.Nh4 Rf8–/+.

12.0-0-0 Qc7 13.Nh4 (13.Rdf1 b5 (13...d5 14.ed5 Bc3 15.Bc3 cd5 16.Bd3 d4+=) 14.Bb3 d5 15.Nh4 Rf8 16.Rf3 Bc3–/+; 13.Bb3 d5 14.d3 Be6 15.Ne2 Bf7 16.Qh6 Bb6–/+; 13.Rde1 d5 14.ed5 Bc3 15.Bc3 Kd8 16.dc6 Qc6+=; 13.d4 b5 (13...d5 14.Be2 ed4 15.Rd4 Qf4 16.Nd2 Qe5–/+) 14.Bd3 Rb8 15.Rdf1 b4 16.ab4 Rb4–/+) 13...Bd7 (13...Bc3 14.Bc3 d5 15.Ng6 Ng6 16.ed5 cd5 17.Bd5+=; 13...b5 14.Bb3 Kd8 15.Ng6 Ng6 16.Rdf1 Rf8–/+; 13...Rb8 14.Rdf1 b5 15.Bb3 Rf8 16.Qh7 Nf4=; 13...Qd7 14.Rdf1 b5 15.Bb3 Rf8 16.Nf5 Qc7=) 14.Nf5 (14.Rhf1 0-0-0 15.Rf6 d5 16.ed5 Bc3 17.Bc3 cd5=) 14...0-0-0 (14...b5 15.Bb3–/+ b4 16.ab4 Bb4–/+) 15.Ne7+= Ne7 16.Rhf1 (16.Qf7 Bg4+= (16...Ng6 17.Qf6 b5+=)) 16...Rdf8 (better is 16...d5!? 17.Bb3 Qd6–/+) 17.Bf7= Ng8 18.h3 (18.Bc4 Qb6+=) 18...Qd8 (18...f5!? 19.Bg8 Rfg8 20.ef5 Bc3 21.Bc3 Rg2–/+) 19.g4 Qe7 20.Bb3 Qg7 21.Ne2 Ne7 22.d4 h6 23.de5 de5 (23...fe5 24.Rf8 Rf8 25.Rd6 Rf1 26.Rd1+=) 24.Rf3 (24.Nf4!? Kc7 25.Ne6 Be6 26.Be6+=) 24...Bc7 25.Ng3 Be8 26.Nf5 Nf5 (worse is 26...Bh5 27.Ng7 Bg6 28.Be6 Kb8 29.Rd7=) 27.Qf5 Kb8 28.Qe6 (28.Rfd3 Bg6 29.Qf3 Qh7–/+) 28...h5–/+ 29.a4 (better is 29.Bc3 hg4 30.hg4–/+) 29...Bf7?? (29...hg4 30.hg4 Qh6 31.Kb1–+) 30.Qe7?? (better is 30.Qf6 Qf6 31.Rf6 Bb3 32.Rf8 Rf8 33.cb3 hg4 34.hg4=) 30...Qg5–/+ (30...hg4?! 31.Rf6 Qg5 32.Kb1 Qf6 33.Qf6 Bb3 34.Qe7=) 31.Kb1 Bb3 (worse is 31...hg4 32.Rf6 Qf6 33.Qf6 Bb3 34.Qe7=) 32.cb3 (better is 32.Rb3!? hg4 33.Rg1–/+) 32...hg4–+ 33.Rg3 Re8 34.Qf7 Rhf8 (34...f5 35.ef5 Re7 36.Qg6 Qg6 37.fg6 gh3 38.Rh1+=) 35.Qh7 Rh8 ½–½. Schuehler,Ernst – Gil Matilla,C, corr ICCF EU/M/GT/233 (year?).

12.0-0-0 d5 13.Bb3 (13.ed5 cd5 14.Bb5 Bd7 15.Bd3 Bc3 16.Bc3–+ e4–+) 13...Qd6 (13...Bc3 14.dc3 Qb6 15.ed5 cd5 16.Bd5 Nd5–/+) 14.Rhf1 Bc3 15.dc3 Qc5 16.Kb1 0-0–/+.

12.Rb1 Qb6 13.Bb3 Bd7 (13...Qa6 14.Nh4 Bc3 15.Bc3 Kd8 16.Ng6 Ng6+=; 13...Qc5 14.Nh4 d5 15.Nf5 b5 16.Ne7 Ke7=; 13...Kd8 14.Nh4 Nf4 15.Qf7 Bc3 16.Bc3 Qb5–/+; 13...d5 14.ed5 Bc3 15.Bc3 Nd5 16.g3 Be6+=) 14.Qh6 0-0-0 15.Rf1 d5 16.Nh4 de4–+.

12.Bb3 d5 13.ed5 cd5 (13...Bc3 14.Bc3 Nd5 15.Bd5 Qd5 16.0-0 Qc4–/+) 14.Nh4 Rf8 15.0-0 Qd6 16.Kh1 Bd7–/+.

12.Rf1 d5 13.Bd3 Qb6 (13...0-0 14.ed5 Bc3 15.Bc3 Qd5 16.Nh4 e4–/+; 13...Be6 14.Nh4 Qb6 15.Ng6 Ng6 16.Rf6 Ke7+=; 13...Kd7 14.g3 Kc7 15.Nh4 d4 16.Ne2 Qd6+=; 13...d4 14.Ne2 Be6 15.Nh4 Qb6 16.Bc1 0-0+=) 14.Nd1 de4 15.Be4 Be6 16.Rf2 0-0-0–/+.

12.Nh4 A) 12...d5 13.ed5 (13.Ng6 Ng6 14.ed5 Bc3 15.Bc3 cd5 16.Bd3 Kf7=) 13...Bc3 14.Bc3 cd5 15.Ng6 Ng6 16.Bd3 Kf7=; B) 12...Qb6 13.Nd1 (13.Ng6 Ng6+= 14.Nd1 Bd7 15.Rf1 0-0-0 16.g3 Qc5–/+; 13.Bb3 Be6 14.Rb1 Bb3 15.Ba1 Qd4 16.Nf3 Qc4–/+) 13...Qc5 14.Ng6 Ng6 15.Bb3 Bd7 16.Qf3 0-0-0–/+.

8.Nc3 Nd4 9.Nge2 c6 10.Na4 Qa5 11.Nc5 Qc5 (worse 11...dc5 12.Nd4 cd4 13.Qh5 g6 14.fg6 Ng6 15.Rf1+=) 12.Bd3 g6 (better 12...Ne2!? 13.Qe2 d5=+) 13.Nd4+= ed4 14.Qf3 Qe5 15.c3 c5 16.cd4 cd4 17.Qf2 Nc6 18.0-0 g5 (18...0-0!?+=) 19.Bc4+/- a6 (19...Qe4?? 20.Rae1 Qe1 21.Re1 Kd8 22.Bd4+-) 20.Bd5 Rf8 21.a4 Rb8 22.Qf3 (22.Rac1 Bd7+-) 22...Ne7 (22...Bd7 23.Rac1+-) 23.Rac1 (23.Qh5 Kd8 24.Qh6 Ke8+/-) 23...b5 (23...Bf5 24.Rce1 Be6+/- (24...Nd5?? 25.ef5 Ne7 26.Re5 de5 27.Ba3+-)) 24.Qf2+- Bd7?? (better 24...Nd5 25.Bd4 Qe7 (25...Qe4? 26.Rfe1 Qe1 27.Qe1 Kd8 28.Qe4+-) 26.ed5 Kf7+/-) 25.Bd4 Qf4 26.Qe2 Qh4 27.Bf2 Qh6 28.Bg3 Nc8 (28...Rd8 29.Rc7 Rc8 30.Ra7+-) 29.Rc7 Qg7 (29...ba4 30.Qa6 Qh5 31.Rd7 Kd7 32.Qc6 Kd8 33.Bd6+-) 30.Rfc1 Qe7 (30...Kd8+-) 31.Be6! Nb6 (31...Be6 32.Re7 Double attack (32.Re7 Pinning; 32.Re7 Deflection; 32.Re7 Decoy)) 32.Qd3 d5 (32...Rc8+-) 33.a5 Nc4 34.Bd7 Kd8 35.Qd5 Qa3 (35...Qd6 36.Bd6 Re8 37.Be7 Re7 38.Bb5 Nd6 39.Qd6 Rd7 40.Qd7) 36.Bb5 Nd6 (36...Qd6 37.Rd7 Ke8 38.Bd6 Rb5 39.Qe6) 37.Rd7 Ke8 38.Qe6 1-0. sasikumar (2775) - ctrotter (2580), net-chess.com, 2021.

8.h3? Na5 9.Ba2-/+ g6 10.fg6 Ng6 11.d3? (better 11.Nc3 f5 12.Qh5 Qh4 13.Qh4 Nh4 14.Nd5-/+) 11...f5-+ 12.Nf3 Nf4 13.g3 (13.Qd2 Nc6 14.Rh2 fe4 15.de4 Be6 16.Be6 Ne6-+) 13...Ng2 14.Ke2 Ne3 15.Qd2 Bb6 (better 15...fe4!? 16.Ne5 de5 17.Qa5-+) 16.Nc3 c6 (better 16...Rf8!? 17.Nd5 fe4 18.de4 Nac4 19.Bc4 Nc4=) 17.Na4 (17.Nd1 Nd1 18.Rad1 Rf8=+) 17...fe4 18.de4 Nec4 (18...Nac4 19.Bc4 Nc4 20.Qh6-/+) 19.Bc4 (19.Qh6!? Qe7 20.Bc3=+) 19...Nc4-/+ 20.Qd3 (20.Qh6!? Qe7 21.Nb6 ab6 22.Bc1-/+) 20...Nb2 21.Nb2 Qe7 (21...Rf8 22.Kf1-+) 22.Rad1 (22.Nc4 Bc7 23.Rab1 Rg8-+) 22...Bc7 (22...d5 23.Qc3 de4 24.Ne5-+) 23.c4 (23.Nc4 d5! 24.Ne3 d4-+) 23...Be6 24.a4 (24.Nh4 Rf8 25.Rdf1 0-0-0-+) 24...0-0-0 25.Ra1 (25.Qe3 Bb6 26.Qc3 Qf7-+) 25...d5 26.ed5 (26.cd5 cd5 27.Rac1 Kb8-+) 26...cd5 27.cd5 Bd5 28.Kf2 (28.Qc3 Rhg8 29.Rhg1-+) 28...Bf3 29.Qe3 Bh1 30.Rh1 Bb6 31.Rc1 Kb8 32.Qb6 ab6 33.Nc4 (33.h4 Qf8 34.Ke2 Qa3 35.Rc4 Rhf8 36.Rf4 Qb2 37.Kf3 h5 38.Rf8 Rf8 39.Ke3 Rf2 40.g4 Qd4) 33...Qc5 34.Ke2 (34.Kg2 Rhf8 35.Rc2 Rd1 36.h4 Rg1 37.Kh3 Qc8 38.Kh2 Rh1 39.Kh1 Qh3 40.Kg1 Rf1) 34...Qd4 (34...Rhf8 35.Nd6 Rf2 36.Kd1 Rd6 37.Ke1 Qe3) 35.g4 (35.Ne5 Qe5 36.Kf3 Rhf8 37.Kg2 Rd2 38.Kh1 Qe4 39.Kg1 Qg2) 35...Qd3 (35...Rhf8 36.Nd6 Rf2 37.Ke1 Qd2) 36.Ke1 (36.Kf2 Rhf8 37.Kg2 Qe2 38.Kh1 Rf1 39.Rf1 Qf1 40.Kh2 Qf2 41.Kh1 Rd1) 36...Rhf8 37.Nb6 (37.Ne5 Qd2) 37…Rf1 (37...Qd2) 0-1. polog (2070) - ctrotter (2580), net-chess.com, 2021.

8.h3? d5!? 9.ed5 Na5 10.Qh5 Kf8 11.Bd3-+.

9.Nge2 gf5 10.Ng3 f4 11.Qh5 Ng6 12.Nf5 Nd4 13.Ng7 (13.Rc1 c6 14.Na4 b5 15.Nc5 bc4 16.Bd4 ed4-/+) 13...Kd7 14.Qh3 (14.Nd5 Nc2 15.Kd1 Qf8-/+ (15...Na1?? 16.Bb5 c6 17.Qf5)) 14...f5-/+ 15.0-0-0 c6 16.ef5 Kc7 17.Na4 (17.Ne4 Qe7 18.Nc5 dc5 (worse 18...Qg7 19.Bd4 ed4 20.Ne6 Be6 21.Be6=+) 19.Ne6 Be6 20.fe6 Rae8-/+) 17...b5 18.Nc5 dc5 (worse 18...bc4 19.Bd4 dc5 20.Bc3+/-) 19.Ne6 (19.Ba2!?-/+) 19...Be6 20.Be6 Ne6 21.fg6 Nd4 22.g7 (22.gh7 Qe7 23.Rde1 Rae8-/+ (23...Rh7?! 24.Re5 Qe5 25.Qh7 Kb6 26.Qd3=+)) 22...Rg8-+ 23.Qh7 Qf6 24.Qe4 Qg7 25.g3 fg3 26.hg3 Qg3 27.Bd4 cd4 28.Kb2 Qf4 29.Qe2 Qf6 (29...Rae8 30.a4 Qf8 31.ab5 Qb4 32.Kc1 Qb5 33.Rde1-+) 30.Rdf1 Qd6 31.Rh5 Rae8 32.Rf7 Kb6 33.Qh2 Rg6 (33...Qd5 34.Rhh7 a6 35.Qh3-+) 34.Rhh7 a6 35.d3 (35.Ra7 e4 36.Qh5 Re5 37.Rhb7 Kc5-/+) 35...Rge6 36.Rd7 Qc5 37.Qd2 R8e7 38.Rhe7 (38.Rde7 Re7 39.Rh4 Qd6-+) 38...Re7 39.Rd8 e4 40.de4 Re4 41.Rb8 Ka7 42.Rd8 Qe5 43.Ka2 Kb6 44.Qd3 (44.Qf2 Rf4 45.Qg3 Qe6 46.Kb1 Qf6-+) 44...c5 45.Qh3 Re3 46.Qd7 (46.Qh6 Qe6 47.Qe6 Re6 48.Kb3-+) 46...Re2 47.Kb1 (47.Ra8 Rc2 48.Kb1 Qe1 49.Kc2 Qe4 50.Kc1 Qa8 51.Qd6 Qc6 52.Qd8 Qc7 53.Qf6 Ka5 54.Qf2-+) 47...d3! 48.Qd6 (48.cd3 Qb2 Mate attack; 48.Qd3 Re1 Decoy) 48...Ka5 49.Qe5 dc2 (49...Re5?! 50.Rd3 Ka4 51.Rf3-/+) 50.Kb2 Re5 51.Kc2 Re3 52.Rd5 (52.Kb2 Ka4-+) 52…c4 0-1. sasikumar (2775) - marekt (2825), net-chess.com, 2021.

9.g4-/+.

9.ed5 Nd5 10.Rf1–/+.

9.ed5 Nd5 10.Ng3–+.

9.c3. W Labahn.

9.d4 Bb6 10.fg6 hg6 11.d5–/+.

9.d4 ed4 10.Nd4 Nd4 (10...Ne5 11.Nd2–/+) 11.Bd4 Bd4 12.Qd4 Nc6 13.Qd5 (13.Bb5!?–/+) 13...Ne5 14.fg6 (14.0-0 c6 15.Qd4 Qb6 16.Qb6 ab6–/+) 14...hg6–+ 15.Bb3 c6 16.Qd2 (16.Qd4 Qe7–+) 16...f5 (16...Qb6 17.h4–+) 17.ef5 Bf5 18.Qf2 (18.Nc3 Qh4 19.Kd1 Qh5 20.Kc1 0-0-0–+) 18...Qa5 19.Nd2 (19.Qd2 Qc5 20.Qf2 0-0-0 21.Qc5 dc5–+) 19...0-0-0 20.0-0-0 (20.0-0 Ng4 21.Nc4 Qa6–+ (21...Nf2?! 22.Na5 Ne4 23.Nc4–+)) 20...Qa3 21.Kb1 Nd3 (better is 21...Rhe8–+) 22.cd3?? (22.Qd4 Nc5 23.Bf7–+) 22...Bd3 23.Bc2 Bc2 (better is 23...Rh5 24.Nb3 Qb3 25.Kc1 Bc2–+) 24.Kc2+= Rh5 25.Qf6?? (25.Rb1 Rf5 26.Qh4=) 25...Rc5 (25...Rc5 26.Nc4 Qa2 27.Qb2 Rc4 28.Kd3 Qb2 29.Kc4 Qc2 30.Kb4 c5 31.Ka3 Re8 32.Rhe1 Re1 33.Re1 Qc3 34.Ka2 Qe1 35.Kb3 Qe3 36.Kc2 Qe2 37.Kc3 b5 38.g3 Qh2 39.Kd3 c4 40.Kd4 Qg3 41.Ke4 a6 42.Kd5 Qe5 43.Kc6 Qc5) 0–1. Gross,Wilhelm – Labahn,Wolfgang, corr SOK–87–03, 1987.

9.Ng3 Na5 10.Be6 Be6 11.fe6 Qc8–/+.

10.Nc3 Nd4 11.0-0-0 (11.Rc1 c6-/+) 11...c6 12.Nge2 (12.Nf3 b5 13.Bb3 Nb3 14.cb3 Be6-/+) 12...Be6 (12...b5!? 13.Ba2 Rb8-/+) 13.Be6=+ Ne6 14.Rhf1 Qe7 15.Qf5 Rf8 16.Na4 0-0-0 (16...d5 17.Nc5 Nc5 18.Ng3-/+) 17.Nc5 (17.d4 ed4 18.Nd4 Bd4 19.Bd4 Rde8=) 17...dc5=+ 18.Kb1 Kb8 19.d3 Nd4 20.Qf2 Ne2 21.Qe2 Nf4 22.Qd2 Ne6 23.Qh6 The backward pawn on f6 becomes a target 23...Nd4 24.Rf2 Rd6 25.Rdf1 Kc7 26.Qd2 b6 27.g4 Rg8 28.h3 Rg6 29.a4 Kb7 30.Qc3 Ne6 (30...h5 31.gh5 Rh6 32.Qc4=+) 31.h4 (31.a5 Nf4 32.ab6 ab6=+) 31...Rd7 (31...Nd4 32.g5 h6 33.Bc1 hg5 34.hg5=+) 32.a5=+ Rg4 33.Rf6 Nd4 (worse 33...Rh4 34.a6 Kc8 35.Qe5+=) 34.Qa3 Rg1 35.a6 Kc7 36.Rc6 Nc6 37.Rg1 Qh4 38.Qb3 Qf6 39.Qg8 b5 40.Rh1 Kb6 41.Rh7 (41.Bc1!? Qf7 42.Qg1-/+) 41...Rh7-/+ 42.Qh7 Ka6 43.Qc7 c4 44.Qd7 cd3 45.cd3 (45.Qd3!? Kb6-/+) 45...Kb6-+ 46.Qh3 a5 47.Qe3 Kb7 48.Qe2 a4 49.Bc1 Qd6 50.Qc2 Nd4 51.Ba3 (51.Qc3 Ne2 52.Qd2 Nc1 53.Kc1 Qc5 54.Kd1 b4-+) 51…b4 (51...b4 52.Qa4 ba3 53.Qa3 Qc6 (53...Qa3?!) 54.Qb2 Kc7-+; 51...Nc2?! 52.Bd6 Ne1 53.Be5 Nd3 54.Bg7-+; 51...Qa3?! 52.Qc7 Ka6 53.Qb6 Kb6=) 0-1. sasikumar (2775) – pcmvr, net-chess.com, 2021.

10.Ne2 Na5 A) 11.Bd5 Rb8 (11...c6 12.Ba2 d5 13.Nbc3 d4 14.Nd1 d3 15.cd3 Qd3+=) 12.d4 c6 13.Bb3 Nb3 14.cb3 ed4 15.Bd4 Bd4–/+; B) 11.Bd3 c6 (11...Be6 12.Nbc3 a6 13.Rf1 Nc4 14.Bc4 Bc4 15.Nd5 0-0+=) 12.Nbc3 b5 13.Ng3 Be6 14.Nf5 Qd7 15.Rf1 Kd8–/+; C) 11.Ba2 c6 (11...Bd7 12.Rf1 Ba4 13.Nbc3 Bc2 14.Nd5 Nb3 15.Nf6 Ke7+/–) 12.Rf1 b5 13.d4 Bb6 14.Nd2 Rb8 15.Nf3 Nc4+=.

10.Ne2 Rb8 A) 11.Rf1+= Na5 (11...b5 12.Bd5 Bd7 13.Qf3 Rf8 14.Qh5 Nce7 15.Qh7 c6+=) 12.Ba2 b5 13.Nbc3 c6 14.Ng3 Nc4 15.Bc4 bc4–/+; B) 11.Ba2 b5 (11...Bd7 12.Rf1 b5 13.Qf3 Rf8 14.Qh5 Qe7 15.Nbc3 Kd8+=) 12.Rf1 Na5 13.Nbc3 c6 14.Ng3 Nc4 15.Bc4 bc4–/+; C) 11.Nbc3 Na5 (11...a6 12.Rf1 Nd4 13.Nd5 Nc2 14.Kd1 Na1 15.Nf6 Ke7+=) 12.Ba2 b5 13.Rf1 c6 14.Ng3 Rb7 15.Nf5 Nc4+=.

10.Ne2 Qd7 A) 11.Rf1 Na5 (11...Rf8 12.Nbc3 f5 13.Bb3 f4 14.Na4 Bd4 15.c3 Bb6+=) 12.Bd3 Qg4 13.Qg4 Bg4 14.Bc3 Nc6 15.h3 Bd7–/+; B) 11.Ng3 Na5 (11...Kd8 12.Qf3 Rf8 13.Nf5 Nce7 14.g4 c6 15.Nc3 d5–/+) 12.Bd3 Qf7 13.Bc3 Nc6 14.Bb5 Nf4 15.Qf3 Rg8–/+; C) 11.Nbc3 f5 (11...Na5 12.Bd3 a6 13.Nd5 Rf8 14.Rf1 Qg7 15.Bc3 Nc6+=) 12.Rf1 Rf8 13.Bb3 f4 14.Na4 Bd4 15.c3 Bb6+=.

10.Ne2 Bd7 A) 11.Rf1 a6 (11...Na5 12.Ba2 Ba4 13.Nbc3 Bc2 14.Nd5 Nb3 15.Nf6 Ke7+/–) 12.Nbc3 Na5 13.Ba2 c6 14.Ng3 b5 15.Qf3 Qe7+=; B) 11.d3 Qc8 (11...Na5 12.Ba2 Ba4 13.Kd1 Bd7 14.Rf1 c6 15.Bc1 d5+=) 12.h3 Qd8 13.Nbc3 Na5 14.Ba2 c6 15.Rf1 b6+=; C) 11.Nbc3 Na5 (11...a6 12.Nd5 Na5 13.Ba2 Qc8 14.d4 ed4 15.Nef4 Kd8+– 2.56) 12.Ba2 b5 13.Nd5 Nc4 14.Rf1 Nb2 15.Nf6 Ke7=.

10.Ne2 f5 A) 11.ef5 Qh4 12.Qh4 Nh4 13.f6 Ng2 14.Kd1 Rf8 15.Rf1 Bg4–/+; B) 11.Ng3 f4 (11...Qh4 12.ef5 Bf5 13.Qh4 Nh4 14.Nf5 Nf5 15.Rf1 Nfd4–/+) 12.Nf5 Bf5 13.Qf5 Rf8 14.Qe6 Qe7 15.Qe7 Ke7–/+; C) 11.d4 Bb6 (11...ed4 12.ef5 Qh4 13.Ng3 Qh5 14.Nh5 Nge5 15.Bd5 Kd8–/+) 12.ef5 Qh4 13.Qh4 Nh4 14.f6 Ng2 15.Kd2 Bg4–/+.

10.Nf3 Ke7 11.Nc3 Be6 (better is 11...Qf8!?+=) 12.Be6+= Ke6 13.Qf5 Ke7?? (better is 13...Kf7 14.Ng5 Ke8 15.Qe6 Qe7+=) 14.Nd5+– Ke8 15.Nf6 Ke7 16.Ng5 Qc8 17.Nd5 (17.Nd5 Kd8 18.Qf6 Nce7 19.Ne7+–) 1–0. Zumpe,Guenter – Krutzsch,Birgit, corr DDR, 1989.

10.Nf3 Qe7 11.Nh4 Qg7 12.Nf5 Qf8 13.Nc3 Bd7 (13...Nd4 14.Nd4 Bd4=) 14.Nh6 (14.Nd5!? 0-0-0 15.Rf1=) 14...0-0-0 (14...Nd4 15.Rc1–/+) 15.g3 (15.Ne2 Nge7–/+) 15...Nd4–/+ 16.Kd1 Qg7 (16...Ne7 17.Nf7 Qg7 18.h3–/+) 17.Ne2 (17.Nd5 Ne7–/+) 17...Ne2 18.Ke2 (18.Be2 d5 19.ed5 Be8+=) 18...Rhf8 (18...Ne7 19.Rab1–/+) 19.Rhf1 (19.Nf5 Bf5 20.Qf5 Kb8+=) 19...Ne7 20.Rf3 (20.Ke1 Qg5 21.Qg5 fg5+=) 20...Qg6 (20...c6!?–/+) 21.Qg6 hg6 22.h4 (22.Nf7 Bg4 23.Nd8 Bf3 24.Kf3 Kd8–/+) 22...c6 (22...f5 23.Raf1–/+) 23.Raf1 (23.Nf7 Bg4 24.Nd8 Bf3 25.Kf3 Kd8–/+) 23...d5–+ (23...d5 24.ed5 cd5–+). Janosic – Semenov, corr, 1981.

11.Nbc3+= Na5 12.Ba2+= Qd7 13.Rf1 Rf8 14.Ng3 Kd8 15.Nd5 Qg7=.

11.Nbc3+= Be6 12.Nd5 0-0-0?? 13.Ne7+- (13.Ne7 Nge7 14.Be6 Kb8 15.Rf1+-) 1-0. sasikumar (2775) - bleusnake (2375), net-chess.com, 2021.

11.Nbc3+= Be6 12.Nd5 Bd5 13.ed5 (13.Bd5 Na5 14.Ng3 Qd7 15.Rf1 0-0-0=) 13...Na5 14.Bd3 Qf7 (14...e4 15.Bb5 Kd8=) 15.Bc3 Bb6 16.Bf5 Ne7 17.Bd7 Kf8 18.Qh3 Qd5 (18...Nd5? 19.Be6 Qg6 20.Bd5+–) 19.Rf1 Qf7?? (better is 19...Kf7+=) 20.Qh6+– (20.Qh6 Kg8 21.Rf6+–) 1–0. tdanecki – fitahiana (2535), net–chess.com, 2012.

11.Nbc3+= Rf8 12.Rf1 a6 13.Qh6 Be6 14.Be6 Qe6 15.Qh7 Nce7=.

11.Bd5 Nd4 (11...Nd8 12.Rf1 c6 13.Bc4 Ne6 14.Nbc3 Ng7 15.Qh6 b5–/+) 12.Nd4 ed4 13.Kd1 Kd8 14.Re1 Ne5 15.Qh4 c6–/+.

11.Rf1 Nd4 (11...Na5 12.Ba2 b5 13.Ng3 Nc4 14.Bc4 bc4 15.Nc3 Be6+=) 12.Nd4 ed4 13.Qe2 Ne5 14.Bb3 d3 15.Qh5 Kd8–/+.

11.Nc3 Kd8 12.Nd5 Rf8 13.Be2+=.

11.Nc3 Nce7 12.h3 Kd8 13.g4 Qc6 (13...a6 14.Bb3+=) 14.Bb3 Bb6 (14...Bd7 15.Rf1+=) 15.Kd1 (15.Rf1 Rb8+=) 15...Bd7 (15...Bc5 16.Bf7+=) 16.Qh6 Ba5 17.Nd5 Nd5 18.Bd5 Qb6 19.Rb1 Qf2 20.Ne1 Re8 (20...c6!? 21.Bc4 Qf4 22.Qf4 Nf4–/+) 21.Bc1 (21.Bb7 Rb8 22.Ba6 Be6–+) 21...Nf4 Threatening mate: Qe2 22.Qf6 Black creates threats along the open f–file 22...Re7 23.Qh8 Be8 24.Bc4 b6 (24...Qd4 25.d3 Qf2 26.Bf4 Qf4 27.Ke2–/+) 25.Qg8 (25.Rb3 Qd4 26.d3 d5 27.Bd5 Nd5 28.ed5 Qd5=) 25...a6 (25...Qd4 26.Bd5 Nd5 27.Qd5 Qd5 28.ed5–/+) 26.Rb3 b5 27.Rf3 Qd4 28.Bd5 Nd5 29.ed5 (29.Qd5? Qd5 30.ed5 Bf7–/+) 29...e4 30.Re3 Bb6 31.Nf3? (better is 31.Rf1+=) 31...Qf6–+ (31...ef3 32.Re7 Ke7 33.Re1 Qe5 34.Re5 de5 35.d4+–) 32.Qg5 (32.d4 Rg7 (32...ef3?! 33.Re7 Qd4 34.Bd2 Qa1 35.Bc1 Qd4 36.Bd2 Qa1 37.Bc1 Qd4=) 33.Qe6 Qe6 34.de6 ef3 35.Rf3 Bd4–+) 32...Qf7 (32...Qg5 33.Ng5 Be3 34.de3–+) 33.Bb2?? (better is 33.d4 h6! 34.Qh6 ef3 35.Re7 Ke7 36.Re1 Kd7 37.Qe6 Qe6 38.de6 Kc6 39.Rf1–+) 33...Be3 (33...Be3 34.Qe3 ef3–+ (worse is 34...Qf3 35.Qf3 ef3 36.Bf6–+); 33...ef3? 34.Re7 Qg6 35.Qh4+–) 0–1. Woschkat,Karl_Heinz – Wall,Bill, IECG, 1995.

11.Nc3 Qg4 12.Qg4= Bg4 13.Nd5 0-0-0 (13...Bf3 14.Nf6 (14.Nc7?? Kd7 15.gf3 Kc7–+) 14...Ke7 15.Nd5 Kd8 16.gf3+=) 14.Nf6= Bf3 15.Be6 Kb8 16.gf3 Bd4 (16...Nf4 17.Bf5=) 17.c3 Nf4 18.Bc4 (18.Bd5 A) 18...Nd5? 19.ed5 (19.Nd5?! Bb6=) 19...Bc3 20.dc3+–; B) 18...Bb6 19.Bc4 Kc8+=) 18...Bc5 (18...Bb6 19.Rb1=) 19.Rd1+= Na5 (19...Ng2 20.Kf1 Nh4 21.Ke2+=) 20.Bf1 d5 21.d4 ed4 22.cd4 Be7 23.Nd5 (23.Ng4 Nb3 24.e5 h5=) 23...Nd5= 24.ed5 Rd5 25.Bd3 Bf6 26.Be4 (26.Rg1 Rdd8= (worse is 26...Bd4 27.Be4 c5 28.Bd5 Bb2 29.a4+/–)) 26...Rd7 27.Rd3 Nc4 28.Ba1 Rg8 (28...Re8 29.Kd1=) 29.Kf2+= Bh4 30.Kf1 Rdg7 31.Bd5 (31.Bc3 Rg2 (worse is 31...Na3 32.d5 Rg2 33.Bd4+=) 32.Be1 Be1 33.Ke1 Ra2–/+) 31...Re8–/+ The mate threat is Re1 32.Be4 Bf6 (32...Nd6 33.d5 Rf7 34.Ke2–/+) 33.Rg1 (33.a4 Nd6–/+) 33...Rg1–/+ 34.Kg1 Nd6 35.Kf1 Ne4 36.fe4 Re4 37.Rf3 Be7 38.d5 Kc8 39.Bb2 (39.Bg7 Bd6–/+) 39...h5 40.h3 Bc5 41.Bh8 (41.Rc3 Rf4 42.Ke2 Bd4–/+) 41...Kd7–+ 42.Bg7 b6 (42...b6 43.Kg2 Re1–/+) 0–1. Bringsken,Peter (1930) – Gierth,Karlheinz (2215), BdF, 2004.

11.h3 Qg7 12.Nh4 Kd8 13.Ng6 hg6 14.Qf3 g5 15.c3 (15.Rf1 Rh4-/+) 15...g4-+ 16.Qg3 Qh7 17.d3 gh3 0-1. Kot,Frydolin - Budlevskis,Bruno, corr ICCF-Cup8/9 V049, 1990.

12.Ba2+= Kd8 (12...Rf8 13.Rd1 (13.Rb1 Kd8 14.Nd5 c6 15.Bc3 b6 16.Ne3 Nb7 17.Bb4–/+) 13...Nc6 14.Nd5 Kd8 15.d4 ed4 16.Nd4 Bd4 17.Bd4+=) 13.Qh6 (13.Rf1 Nf4 14.Qh6 Ng2 15.Kd1 Qe7 16.Nd5 Qf8 17.Ng5–/+; 13.Rb1 Rf8 14.Nd5 c6 15.Bc3 b6 16.Ne3 Nb7 17.Bb4–/+) 13...Nc6 (13...c6 14.Rf1 b5 15.Nh4 Qg4 16.Ng6 Qg6 17.Rf6=) 14.Na4 (14.Nd5 Rf8+= 15.Nh4 Nce7 16.Ne7 Qe7 17.Ng6+=) 14...Bd4 (14...Qg4 15.Nc5 dc5 16.0-0 Qe4 17.Qg7=) 15.c3 Nce7 (15...Bb6 16.Nb6 ab6 17.0-0+=) 16.cd4 Qa4 (16...Qa4 17.Qe3 Qb5+=) 17.Qe3+=.

12.Bb5 c6 13.Bd3 (13.Be2 0-0 14.g3 Qh3 15.Qh3 Bh3 16.Bf1 Bg4 17.Ng1–/+) 13...Qg4 14.Qg4 Bg4 15.Na4 Nf4 16.Nc5 dc5 17.Bf1–/+.

12.Bd3 A) 12...0-0 13.Ne2 (13.Bb5 c6 14.Bf1 b5 15.Rb1 Nf4 16.Qh4 f5 17.g3–/+) 13...Qc6 14.Bc3 Qa4 15.Rf1 Nc4 16.Nh4 Ne7 17.Qh6+=; B) 12...Rf8 13.Rf1 (13.Bb5 c6 14.Be2 Rf7 15.g3 Qh3 16.Qh3 Bh3 17.Bf1–/+) 13...Rf7 14.Ne2 Qe6 15.Bc3 Nc6 16.Bb5 a6 17.Bc6–/+.

12.Nd5 A) 12...Kd8 13.Be2 (13.Bd3 Qg7 14.Rf1 Be6 15.g3 Rf8 16.Bc3 Nc6 17.Bc4–/+) 13...Qa4 14.Bd3 Be6 15.Nf6 Kc8 16.g3 Nc4 17.Ng5=; B) 12...Qg7 13.Be2 (13.Bb5 c6 14.Bc3 0-0 15.Ba5 cd5 16.g3 Ne7 17.Rf1–+) 13...c6 14.Nb4 Be6 15.d4 Bf7 16.Qg4 h5 17.Qg3–/+.

12.Be2 A) 12...Kd8 13.Nd5 (13.Qh6 Qg4 14.g3 Qe6 15.Nh4 Qe8 16.Rf1 Qf8 17.Qh5=) 13...Qa4 14.Bd3 Be6 15.Nf6 Kc8 16.g3 Nc4 17.Ng5=; B) 12...0-0 13.g3 (13.Qh6 f5 14.Qg5 Qg7 15.g3 fe4 16.Nh4 Bh3 17.Ne4–/+) 13...Qh3 14.Qh3 Bh3 15.Bf1 Bg4 16.Ng1 Be6 17.Nd5–/+.

10.Ba2 de4 11.Qf6 (11.fg6 Ng6 12.Qe4 f5 –+) 11...Rf8 12.Qh4 Bf5 –+. W Labahn.

10.Bb5 0-0–+.

10.Bd5 Nd5 11.ed5 Qd5 12.fg6 (12.Nc3 Qg2 13.Ne4 Bg1 14.Nf6 Kf7 15.Nh7 Bf2 16.Qf2 Qh1 17.Ke2 Qe4 18.Kd1 Qf5–+) 12...Qg2–+. W Labahn.

10.Qf6 Rf8 11.Qg7 dc4 12.Qh7 Nd4 13.fg6 Bg4 14.g7? Nc2#. W Labahn.

11.Qe4 Nd6 12.Qe2 Ne7 13.Bb5 c6 14.dc6 bc6 15.Bc4 Nc4 16.Qc4 Qd5 17.Qd5 Nd5 18.Nc3 Rb8!? –+. W Labahn.

12.c3? Nd6 13.Qd3 Bf5–+. W Labahn.

12.Qd3 c6 13.Bb3? Nb3 14.Qb3 Qd5 15.Qd5 cd5 16.Nc3 Be6 17.g3 (17.Nf3 e4 18.Na4 ef3 19.Nc5 fg2–+) 17...Nd4 18.0-0-0 Rc8 19.Nge2 0-0 (19...Bf5 20.Nd4 Bd4 21.Rde1–+) 20.Rde1 Bf5 21.Nd4 Bd4 (21...ed4?! 22.Nd5 Bd6 23.c3–+) 22.Re2 (22.g4 Bc3 23.gf5 Bb2 24.Kb2 gf5 25.Re3–+) 22...Bg4 23.Ree1 Bf3 (23...Bf3 24.Rhf1 Bg2–+) 0–1. Paltrinieri,Mario – Labahn,Wolfgang, corr ICCF TT–4–90, 1990.

12.Qd3 c6 13.Nc3?! b5 14.Ba2 Nd6–+ (idea 15...Bf5). W Labahn.

12.Qd3 c6 13.dc6 Qb6 14.Ra2–+.

12.Qd3 c6 13.dc6? Qb6 14.Bc3 Nc2 15.Qc2 Bg1 16.d3 Ne3 17.Qd2 Bg4 18.cb7 Rd8 19.b8Q Rb8–+. W Labahn.

12.Qd3 Nh4 13.Kf1–+.

12.Bd3 Nd6 13.Qh4 N4f5 14.Qa4 Bd7–+.

12.Bd4 Bd4 13.Bb5 Kf7 14.c3 Nd6 15.Qe2 Bg1 16.Rg1 c6!–+ (17...Qb6). W Labahn.

12.Bd4 Bd4 13.c3 Nd6 14.Qe2 Bg1 15.Rg1 0-0 –+. W Labahn.

12.Bd4 Bd4 13.Nc3 Nd6 14.Qe2 0-0 –+. W Labahn.

12.Nf3? Nd6 13.Qd3 Bf5–+. W Labahn.

10.Nf3!? Ng6 11.Qh5 fe4 12.Nh4 Nce7 13.Rf1 d5 14.Rf6 Rf8 (14...dc4 15.Ng6 Ng6 16.Rg6) 15.Be5. W Labahn.

10.Qf6 Rf8 11.Qh6 fe4 12.Qh5 Ng6 13.Qh7 Qf6–+. W Labahn.

10.Qh5 Kd7 11.ef5 d5 12.Bb3!? –+. W Labahn.

8.Nf3 Bb6 9.d4 g6 (9...ed4 10.Nd4 g6 11.0-0+=) 10.Nbd2 (10.fg6 hg6 11.Qb3 g5–/+) 10...Bd7 (10...ed4 11.cd4 d5 12.ed5 Nd5 13.fg6 hg6 14.0-0+=) 11.Rf1 Ng8 (11...Rf8 12.g4+=) 12.Nh4 Nce7 (12...Nge7 13.Nhf3=) 13.de5 de5 (13...fe5? 14.fg6 hg6 15.Bf7 Kf8 16.Bg6 Bf5 17.Bh5+– (17.ef5?! Rh4 18.Qb3 d5+/–; 17.Nf5?! Ng6 18.Qg4 Qf6+–; 17.Bf5?! Rh4 18.Be6 Kg7+–; worse is 17.Rf5 Nf5 18.Nf5 Qg5=)) 14.fg6 hg6 15.Qb3 Rh4 (15...Nh6!?=) 16.Bg8+/– Ng8 17.Qg8 Ke7 18.Ba3 (18.Qg7 Ke6 19.Qg6 Bc6+/–) 18...c5+= 19.Qg7 Ke6 20.0-0-0 (20.h3 g5 21.Qg6 Rf4=) 20...Qe7 (better is 20...Qf8!? 21.Qg6 Rh2+=) 21.Qg6+– Be8 (21...Qf8!? 22.Kb2 Rh6 23.Qg3+/–) 22.Qf5 Kf7 23.Nf3 (23.Nf3 Rh6 24.Ne5 Kg7 25.Qg4 Kh8 26.Qf4+–) 1–0. pierre – henriken, ChessHere.com, 2005.

8.Nh3 Nf5 9.0-0?? (9.ef5 Bf5 10.0-0 Bb6 11.d4 Qd7=) 9...Nce7?? (better is 9...Bb6 10.Nf2 Nfe7–+) 10.ef5+= Bf5 11.Rf5 (better is 11.Qb3!?+=) 11...Nf5+= 12.Be6 g6 (12...Bb6 13.Kh1 Ne7 14.Qh5 Ng6 15.Bf5–/+) 13.Bf5= gf5 14.Qh5 Ke7 15.Qf5 Qd7 16.Qd7 (16.Qf3 Bb6 17.d4 Qc6+=) 16...Kd7–/+ 17.Na3 Bb6 18.Kf1 a6 (18...d5 19.d3–/+) 19.Re1 Rhg8 20.Nc4 Ba7 21.d3 Rg6 22.Nd2 Rag8 23.Re2 f5 24.d4 e4 25.Nc4 c6 26.Ne3 Rf6 27.Rf2 Rgf8 (27...d5 28.Nf5 Bb8 29.g3+=) 28.Ng5 Rg6 29.Nh3 (29.Nh7? Rh8–+) 29...Rgf6 (29...d5 30.Ba3 Rff6 31.Nf4= (worse is 31.Rf5 Rf5 32.Nf5 Rf6–/+)) 30.Rf4 (better is 30.Ng5!? Rh8 31.c4=) 34...h6 ½–½. Pietrzak,Janusz – Bednarski,Lechoslaw, corr Tch19–Poland, 1992.

9.fg6 Ng6 10.g3 Bb6 A) 11.a3 A1) 11...h5 12.Ne2 (12.d3 Bg4 13.Qg2 Na5 14.Ba2 h4 15.h3–/+) 12...Bg4 13.Qg2 h4 14.h3 Bd7 15.gh4–/+; A2) 11...Na5 12.Ba2 Rf8 13.d4 f5 14.Qe2 fe4 15.Qe4–+; B) 11.d3 Na5 12.Nd2 (12.Na3 Bc5 13.Bb3 Rf8 14.g4 Nb3 15.ab3–+) 12...h5 13.d4 Bg4 14.Qd3 h4 15.h3–/+; C) 11.Na3 C1) 11...h5 12.Ne2 (12.Rb1 Bg4 13.Qg2 h4 14.h3 Bd7 15.g4–/+) 12...Bg4 13.Qg2 h4 14.h3 Be2 15.Be2–/+; C2) 11...Rf8 12.g4 (12.Bb5 f5 13.Bc6 bc6 14.ef5 Bf5 15.Qc6–+) 12...h5 13.gh5 Nf4 14.Ne2 Ne2 15.Ke2–/+; D) 11.Ne2 Na5 12.Na3 Rf8 13.Bd3 Be6 14.Bc2 Qd7 15.d4–+; E) 11.Bb5 E1) 11...Be6 12.Ne2 (12.d3 Rf8 13.a4 f5 14.ef5 Bf5 15.Bc6–+; 12.d4 a6 13.Ba4 d5 14.Nd2 de4 15.Ne4–/+) 12...a6 13.Ba4 d5 14.Rf1 Rf8 15.c4–/+; E2) 11...a6 12.Ba4 Rf8 13.d4 Bd7 14.d5 Nce7 15.Bd7–/+; F) 11.a4 Na5 12.Bf1 (12.Ba2 Rf8 13.Qh5 f5 14.Ne2 Qe7 15.ef5–+; 12.Na3 Rf8 13.Qh5 f5 14.Qh7 Qf6 15.Qh5–+) 12...Rf8 13.Bh3 Bg1 14.Bc8 Qc8 15.Rg1–+; G) 11.Bb3 G1) 11...h5 12.Ba4 (12.Na3 Bg4 13.Qd3 h4 14.h3 hg3 15.Qg3–+; 12.Ne2 Bg4 13.Qg2 h4 14.Rf1 h3 15.Qh1–/+; 12.a3 Bg4 13.Qg2 h4 14.h3 Bd7 15.Ne2–/+) 12...Bg4 13.Qg2 Bd7 14.Ne2 h4 15.d4–/+; G2) 11...Rf8 12.Bc2 (12.Ba4 f5 13.Bc6 bc6 14.ef5 Rb8 15.Qc6–+) 12...Be6 13.Bb3 Qd7 14.Be6 Qe6 15.g4–+; H) 11.Qh5 Na5 12.Be2 (12.Bf1 d5 13.d3 de4 14.de4 Be6 15.Nd2–+) 12...d5 13.d3 de4 14.de4 Be6 15.Nf3–+; I) 11.Bc1 Na5 12.Bf1 (12.Be2 Rf8 13.Qh5 Rf7 14.Nf3 Be6 15.d4–/+) 12...c6 13.d3 d5 14.Nd2 Rb8 15.Bh3–/+.

9.fg6 Ng6 10.g3 Qe7 11.Na3 Be6 (11...Bb6 12.Ne2 Rf8 13.g4 h5 14.gh5 Nh4 15.Qg3–/+; 11...Rf8 12.Bd5 (12.g4 Bb6 13.d3 Bc5 14.Ne2 Na5 15.Bb5–/+) 12...Bd7 13.Nc4 f5 14.Ne2 fe4 15.Qe4–/+; 11...h5 12.h3 (12.Ne2 Bg4 13.Qd3 h4 14.h3 Be2 15.Qe2–/+; 12.Bd5 Bb6 13.Nc4 Bg4 14.Qf1 h4 15.Nf3–/+) 12...Bb6 13.Ne2 Na5 14.d4 Nc4 15.Nc4+=) 12.Ne2 (12.Be6 Qe6 13.Ne2 0-0-0 14.Rf1 Rhf8 15.Qh5–/+) 12...Bb6 (12...Rf8 13.g4 Rg8 14.h3 h5 15.gh5–/+) 13.Rf1 (13.h4 0-0-0–/+ 14.h5 Nf8 15.Rf1+=; 13.Be6 Qe6 14.d4 ed4 15.cd4–/+) 13...Rf8 (13...Bh3 14.Rh1 Qd7 15.d4–/+) 14.0-0-0 (14.g4 Bd7–/+ 15.Bd5–/+) 14...0-0-0 (14...Bh3 15.Rfe1 f5 16.ef5 Bf5 17.Bd5–+) 15.d3 (15.g4 Rd7–/+) 15...Kb8 (better is 15...Bh3!?–+) 16.Be6–/+ Qe6 17.Kb1 d5 18.Qf5 Qf5 19.ef5 Nge7 20.g4 (20.h3 Rg8–+) 20...Rg8 21.h3 h5! 22.gh5 Rg5 23.Rf3 (better is 23.h6–+) 23...Rh5 24.Rdf1 (24.c4 Rf5 25.Rdf1 Rf3 26.Rf3 f5–+) 24...Rdh8 25.Rh1 Rf5 26.Rhf1 (26.Rf5 Nf5 27.Nc2 Kc8–+) 26...Rf3 27.Rf3 f5 28.Nc2 (28.c4 d4–+) 28...Kc8 29.Ne3 (29.a3 Kd7–+) 29...e4 30.de4 (30.Rg3 ed3 31.Nf4 d2–+) 30...fe4 31.Rg3 Be3 32.Re3 (32.c4 Rh6 33.Re3 Nf5–+ (33...dc4?! 34.Re4 Rh3 35.Rc4–+)) 32...Nf5 (32...Nf5 33.c4 Ne3 34.Bh8 Nc4–+ (34...dc4?! 35.Nc3–+)) 0–1. Roth – Bedbur,Heinz, corr, 1985.

9.fg6 Ng6 10.g3 Qe7 11.Ne2 A) 11...Bb6 12.d4 (12.Bd5 Na5 13.a3 Rf8 14.g4 c6 15.Ba2–/+; 12.d3 Na5 13.Nd2 Rf8 14.g4 Nc4 15.Nc4–/+) 12...ed4 13.cd4 Rf8 14.Bb5 Bd7 15.Nbc3–/+; B) 11...Rf8 12.g4 (12.Bd5 Bb6 13.d4 Na5 14.Nd2 c6 15.Bb3–+) 12...h5 13.gh5 Nh4 14.Qd3 f5 15.Bd5–/+.

9.fg6 Ng6 10.g3 Rf8 11.Qh5 A) 11...f5 12.ef5 (12.Qh7 Qf6 13.Qh5 fe4 14.Qe2 Bb6 15.Kd1–+; 12.Bd3–/+ Qf6 13.Nf3 fe4 14.Be4 Bf5 15.Ng5–+; 12.Ne2 fe4 13.Bd5 Qf6 14.Be4 Qf7 15.g4–+) 12...Bf5 13.Nf3 Qe7 14.Rf1 0-0-0 15.Ng5–/+; B) 11...Qd7 12.Nf3 (12.Bd5 Nce7 13.Qh7 Qg4 14.Ne2 Nd5 15.ed5–+) 12...Qg4 13.Qg4 Bg4 14.Be2 Bb6 15.h3–/+.

9.ed5 b5 10.dc6 (10.Bb5 Qd5 11.Na3 Rb8-+) 10...bc4-+ 11.Qa4 Qd5 12.d4?? (12.Na3 Ba6 13.Nc2-+) 12...cd3 13.0-0 Bb6 14.Kh1 e4 15.Ng1 (15.Nd4 e3-+) 15...Qc6 16.Qc6 Nc6 17.c4 (17.Nd2 e3 18.Nc4 Kf7-+) 17...Rb8 18.Bc1 (18.Bc3 e3 19.Na3-+) 18...Bd4 19.Nd2 Ba1 20.Ne4 Bd4 21.Bf4 (21.Nd2 Bb2-+) 21...Bf5 22.Nd2 (22.Ng3 Be6 23.Bc7 Rb2-+) 22...Rb2 23.a4 (23.Ngf3 Be5 24.Ne5 fe5-+) 23...g5 24.Bc7 Rd2 25.Rf5 Rd1 26.h3 (26.h4 Rg1 27.Kh2 d2 28.Rf6 d1Q 29.Re6 Kd7 30.Bb8 Qd2 31.Re7 Ne7 32.Ba7 Qg2) 26...Rg1 27.Kh2 d2 28.Rd5 (28.a5 d1Q 29.Bd6 Rh1 30.Kg3 Qe1 31.Kf3 Rf1 32.Kg4 h5) 28...d1Q 29.Rd6 (29.Rd4 Nd4 30.Ba5 Qf1 31.c5 Rg2) 29...Be5 30.g3 Bg3 0-1. polog (2070) - marekt (2825), net-chess.com, 2021.

9.ed5 Nd5 10.Nh4 Nde7?? (better is 10...Nf4–/+ A) 11.0-0 Qd7 (11...Bb6 12.d4 Na5 13.Nd2 ed4 14.Kh1 Nc4 15.Nc4+=) 12.d4 Bb6 13.Re1 g5 14.fg6 hg6 15.Nf3–+; B) 11.Qf3 g5 12.g3 gh4 13.gf4 h5 14.Qe4 Ne7 15.fe5=) 11.Qh5+– g6 (11...Kd7 12.Be6 Kd6 13.Ba3 Bb4 14.cb4 Nd4 15.b5 c5 16.bc6 Kc6 17.Be7 Qe7+–) 12.Ng6! Ng6 (12...hg6 13.Qh8) 13.fg6 Kd7 14.g7 (14.gh7?! Qe7 15.Qf5 Kd8+/–) 14...Rg8 15.Qf7 (15.Qf7 Ne7 16.Ba3 Rg7 17.Qg7+–; 15.Bg8?! Qg8 16.Qh6 f5+–) 1–0. Hernandez Bravo,JA – Bilbao de Paz,JM, III–049, 1983.

9.a4 b5?? 10.ab5 ab5 11.Bb5 (11.Qh5 g6 12.fg6 Ng6 13.Bb5 Bd7+=) 11...0-0= 12.0-0 Bb6 13.d4 Ra1 14.Ba1 d5 15.Bc6 (better is 15.Qa4!? Na5 16.Bd3–/+) 15...Nc6–/+ 16.Qb3 Na5 17.Qa2 Bb7 18.Nd2 Kh8 ½–½. Brzoza,Miroslaw – Grund,Karl Heinz, corr, 1980.

9.a4 g6–/+.

9.Qh5 g6 10.fg6 Ng6 11.0-0–/+.

10.a5?? b6 (10...Bb2 11.Ra2 Bd4 12.Qh5 g6 13.fg6 Ng6 14.Ra4–+) 11.Be6?? (11.Bc3!? g6+–) 11...b5 (better is 11...Bb2 12.Bc8 Ba1 13.Bb7 Na5 14.Qh5 Kf8 15.Ba8 Qa8 16.Nf2–+) 12.g4?? (better is 12.Nc3 Be6 13.fe6+=) 12...Bb4 (better is 12...Bb2 13.Ra2 Be6 14.fe6 Bd4–+) 13.Bd5 (13.Bc8 Rc8 14.g5–+) 13...Bf5 (13...Nd5 14.ed5 Na5 15.Bc3–+) 14.Bc3?? (better is 14.gf5 Nd5 15.ed5 Na5 16.Qg4=) 14...Ba3 (better is 14...Bg6–+) 15.Na3?? (15.gf5 Nd5 16.ed5 Ne7 17.Qh5 Kf8 18.Na3 Nd5+–) 15...Nd4?? (15...Bg6!? 16.Bc6 Nc6+=) 16.d3?? (16.gf5 Nd5 17.Qh5 Kd7 18.ed5 Qg8 19.Bd4 ed4+–) 16...Bg4?? (better is 16...Nd5 17.ed5 Bd7=) 17.Be6?? (better is 17.Qg4 Nd5 18.Qg7 Nc3 19.Qh8 Kd7 20.Qh7 Qe7 21.Qe7 Ke7 22.Rc1+–) 17...Nf3 (better is 17...Bd1!? 18.Bd4 Bf3 19.0-0–+) 18.Qf3?? (better is 18.Kf2 f5 19.ef5–+) 18...Ng8 (18...Bf3 19.Rf1 Bh5 20.Rg1–+) 19.Bf5 (better is 19.Qg4!? Qe7+–) 19...Rb8 (19...Bf3 20.0-0 Bh5 21.Nf2–+) 20.Nb5 (better is 20.Qg4 g6 21.Bd2+–) 20...Bf3–+ 21.Bd2 ½–½. Brzoza,Miroslaw (2250) – Pietrzykowski, Poland, 1981.

10.dc3 A) 10...Na5 11.Ba2 (11.Bd3 0-0 12.0-0 b6 13.Nd2 Bb7 14.Nb3 Nb3 15.Qb3+/–) 11...g6 12.0-0 d5 13.ed5 Bf5 14.Nf2 Qd6 15.Ba3+–; B) 10...Rb8 11.0-0 (11.Qh5 g6 12.fg6 Ng6 13.0-0 Qe7 14.Nd2 Be6 15.Bd5+–) 11...g6 12.Qf3 Na5 13.Ba2 Nec6 14.fg6 hg6 15.Ng5+–; C) 10...g6 11.0-0 (11.Qf3 Na5 12.Be2 Nb3 13.Ra3 Nc5 14.Bc1 d5 15.fg6+/–) 11...b6 12.Bc1 Na5 13.Bd3 d5 14.Nf2 d4 15.Ra2+–.

10.Bc3 A) 10...d5 11.ed5 (11.Qh5 Kf8 12.ed5 Nd5 13.0-0 Qd6 14.Nf2 Qc5 15.Na3+–) 11...Nd5 12.Qh5 Ke7 13.0-0 g6 14.fg6 Bh3 15.g7+–; B) 10...Kf8 11.Qf3 (11.0-0 d5 12.ed5 Nd5 13.Qh5 Qd6 14.Nf2 Qc5 15.Na3+–) 11...d5 12.Bd5 Nd5 13.ed5 Ne7 14.Bb4 Ke8 15.Be7+–; C) 10...g6 11.Qf3 (11.Qe2 d5 12.ed5 Nd5 13.Bd5 Qd5 14.Nf4 Qc5 15.fg6+/–) 11...gf5 12.Qh5 Kd7 13.ef5 d5 14.Bb3 Qe8 15.Qf3+/–.

10.Nc3 Na5 11.Ba2 (11.Qh5 g6 12.fg6 Ng6 13.Ba2 c6 14.Nf2 b6 15.0-0+–) 11...g6+– 12.0-0 c6 13.Ba3 gf5 14.Qh5 Kd7 15.ef5 +–.

10.Nc3 Nd4 11.Nd5 (11.0-0 c6 12.Qh5 g6 13.fg6 Ng6 14.a5 Bh3 15.Qh3+–) 11...Nd5 12.Bd4 g6 13.Bd5 ed4 14.Qb3 gf5 15.ef5 +–.

10.Nc3 g6 11.0-0 (11.Rf1 Rf8 12.Rc1 Nd4 13.Nf2 c6 14.fg6 hg6 15.Ne2+/–) 11...Na5 12.Ba2 c6 13.Ba3 gf5 14.Qh5 Kd7 15.ef5 +–.

9.d4 ed4 10.cd4 Na5 (10...d5 11.ed5 Nd5 12.Qf3 Qe7 13.Kf2 Nd4 14.Qd5 Nf5 15.Bd4 Bd4 16.Qd4 Nd4 17.Re1 Qe1 18.Ke1 Nc2 19.Kd2 Na1 20.Nf4–+) 11.Nd2 (11.Qh5 g6 12.fg6 Ng6=) 11...Nc4 12.Nc4 d5 13.Qh5 Kf8 14.Ne3 (14.Nb6!? ab6 15.e5–/+) 14...Ba5 (14...de4 15.0-0–+) 15.Kf2 de4 16.Nf4 Qe8 17.Ba3 (17.Qg4!?–/+) 17...Qh5–+ 18.Nh5 Kf7 (18...Bb6 19.Rhd1 c5 20.dc5+=) 19.Ng7 Rg8 20.Be7 Rg7 21.Ba3 (21.Bc5 Bd2–/+) 21...Bd2–+ 22.g3 (22.Rhb1 Be3 23.Ke3 Rg2 (23...Bf5?! 24.Rb7 Ke6 25.Rg1–/+) 24.Ke4 Re2 25.Kf4 Rf2 26.Kg3 Rf5–+) 22...Rg5 (22...Be3 23.Ke3 Bf5 24.Rhb1–+) 23.Rhf1 (23.Rhb1!?–/+) 23...Rh5–+ 24.h4 Bf5 25.Rab1 (25.Nf5 Rf5 26.Ke2 Rf1 27.Rf1 Bc3–+) 25...Rg8 (25...Bh3 26.Rfd1 Be3 27.Ke3–+) 26.Bc1 Ba5 (better is 26...Be3!? 27.Be3 Bh3–+) 27.Rb7–/+ Bb6 28.Bb2 Bd7 29.Rc1 Ra5 30.a3 Rb5 Black gets strong initiative 31.Ba1 (31.Rb1 f5 32.a4 Rb4–+) 31...Rb3 32.Rcc7 Bc7 33.Rc7 Rc8?? (better is 33...Ke7 34.Ra7 Kd6–/+) 34.Rd7+– Ke8 35.Ra7 Rc1 36.Rh7 Ra1 37.Nc2 Ra2 Threatening mate... how? 38.Rc7 (38.Rh8 Kd7 39.Ke1 Rc2 40.Kd1–+) 38...Rbb2 39.Ke3 Rc2 40.Rc2 Rc2 41.Ke4 Rc3 42.g4 Ra3 43.h5 Kf7 (43...Kf7 44.Kf5 Ra5 45.Ke4 Ke6–+) 0–1. Pietrzak,Janusz (2200) – Tupalski,Jan (2200), corr Poland–chT9 B5, 1992.

9.Qh5 g6 10.fg6 Ng6 11.Rf1 Qe7 12.d3 Be6 (12...Na5 13.Bd5+=) 13.Nd2 0-0-0 14.Qf3 Attacking the backward pawn on f6 (14.Be6 Qe6 15.Qf5 Qf5 16.Rf5 Nh4 17.Rf6 Ng2 18.Ke2 Rhf8 19.Rf8 Rf8–/+) 14...Rhf8 15.0-0-0 (15.Rb1 Bd7+=) 15...Qd7 (15...Bd7 16.g4–/+) 16.Be6 Qe6 17.Kb1 (17.Qf5 Qf5 18.Rf5 Nge7–/+) 17...Rd7 18.Nc4 Nce7 (18...Bc5 19.Qf5 Qf5 20.Rf5–+) 19.Nb6+= ab6 20.c4 (20.Bc1 d5+=) 20...Nc6 (20...f5 21.Ng5 Qg8 22.Qh5 fe4 23.Rf8 Qf8 24.Ne4–/+) 21.Ng1 (21.g4 Kd8+=) 21...Rg7–/+ 22.g3 Nge7 23.Ne2 (23.Qh5 f5–/+) 23...f5 24.Qh5 (24.g4 f4 25.h3 Kd8–/+) 24...Rgf7–+ 25.Qh3 Qd7 (25...Qd7 26.Qh5 Ng6–/+) 0–1. Froemmel,Andreas – Labahn,Wolfgang, corr SOK–89–38, 1990.

10.Na3 A) 10...Nc4 11.Nc4 (11.Qh5 Kf8 12.Nc4 ed4 13.Nb6 ab6 14.cd4 d5 15.e5–/+) 11...ed4 12.cd4 d5 13.Nb6 ab6 14.Qh5 Kf8 15.e5–/+; B) 10...d5 11.Qh5 (11.Bd5 Nd5 12.Qh5 Kf8 13.ed5 Qd5 14.0-0 Bd7 15.Qg4–/+) 11...Kf8 12.Bd3 ed4 13.cd4 Nac6 14.Nc2 de4 15.Be4–/+; C) 10...g6 11.Qe2 (11.de5 fe5 12.Rf1 d5 13.f6 Bh3 14.Qd2 Nf5 15.Bd5–+) 11...ed4 12.cd4 d5 13.Bd5 Nd5 14.ed5 Qe7 15.Qe7–/+.

10.Bb5 A) 10...Kf8 11.de5 (11.g4 d5 12.de5 fe5 13.Qe2 h5 14.g5 de4 15.Qe4–/+) 11...fe5 12.Qh5 Kg8 13.Ng5 Qf8 14.Rf1 c6 15.Be2+=; B) 10...Bd7 11.Qh5 (11.Bd7 Qd7 12.Qh5 Kd8 13.Nd2 ed4 14.Nf4 d5 15.Ne6–/+) 11...g6 12.fg6 Ng6 13.Bd7 Qd7 14.Nd2 0-0-0 15.0-0–/+; C) 10...c6 11.Qh5 (11.Bd3 0-0 12.0-0 d5 13.Kh1 de4 14.Be4 ed4 15.cd4–+) 11...g6 12.fg6 Ng6 13.Bd3 Bh3 14.Qh3 Nf4 15.Qg3–/+.

10.Nd2 ed4 11.Qh5 (11.cd4 Nc4 12.Nc4 d5 13.Nb6 ab6 14.Qh5 Kf8 15.e5–/+) 11...g6 12.fg6 Ng6 13.cd4 Nc4 14.Nc4 Bh3 15.Qh3+=.

10.Nd2 d5 11.Qh5 (11.Bd5 Bf5 12.Bb7 Nb7 13.ef5 0-0 14.Qg4 Qd7 15.0-0+=) 11...Kf8 12.Bd3 (12.Bd5!? Nd5 13.ed5 ed4 14.Nf4 Qe8 15.Qe8 Ke8 16.g4+=) 12...de4–/+ 13.Be4 ed4 14.0-0-0 (14.Nf4 Qe8 15.Qe8–/+) 14...dc3 (14...Qe8 15.Qe8–+) 15.Bc3 Qe8 16.Qf3 Qb5 17.Rhf1 Bc5?? (better is 17...Nac6–+) 18.Ba5+/– Qa5 (18...Bf5 19.Qc3 Bh3 20.gh3 Bd4 21.Qd4 Qa5 22.Rf6 Ke8+–) 19.Nc4+– Qb4?? (better is 19...Ba3 20.Qa3 Qb5+–) 20.Rd8 Kf7 21.Ne5!! fe5 22.Qh5 Ng6 23.fg6 1–0. Pietrzak,A – Klimera,H, corr Poland, 1988.

10.Nd2 g6 11.Be6 (11.Bd3 d5 12.g4 ed4 13.cd4 Nac6 14.e5 fe5 15.f6–/+) 11...ed4 12.cd4 d5 13.0-0 de4 14.Ne4 Nf5 15.Rf5+=.

10.Bd3 A) 10...g6 11.Nf2 (11.Rf1 ed4 12.cd4 Nac6 13.d5 Ba5 14.Ke2 Ne5 15.Be5–/+) 11...Nac6 12.d5 Na5 13.fg6 hg6 14.Bc1 c6 15.Ng4–/+; B) 10...ed4 11.Qh5 (11.cd4 0-0 12.Nf4 d5 13.0-0 Re8 14.Nd5 Nd5 15.ed5–/+) 11...Kf8 12.cd4 Nac6 13.d5 Ne5 14.Nf4 Qe8 15.Qe8–/+; C) 10...0-0 11.Na3 (11.0-0 d5 12.Kh1 ed4 13.cd4 Nac6 14.ed5 Nd4 15.Nf4–+) 11...d5 12.0-0 de4 13.Be4 Nec6 14.Nc2 Nc4 15.Rb1–/+.

10.Qh5 g6 11.fg6 (11.Bb5 Kf7 12.Qf3 gf5 13.0-0 d5 14.ed5 Qd5 15.Qe2–/+) 11...Ng6 12.Be2 Be6 13.Nd2 Qd7 14.Nf2 0-0-0 15.d5–/+.

11.Nc4 ed4 12.Nb6 (12.cd4 d5 13.Nb6 ab6 14.Qh5 Kf8 15.e5–/+) 12...ab6 13.cd4 (13.Qh5 Kf8 14.cd4–/+ d5 15.e5–/+) 13...0-0 14.d5 Bd7 15.Nf4–/+.

11.Nc4 d5 12.Qh5 g6 13.fg6 Ng6 14.Nb6 ab6 15.Nf2 Ra5 16.Qf3 Be6 17.0-0 0-0 18.a3 ed4 (18...f5 19.ef5 Rf5 20.Qd1–/+) 19.cd4 Rb5 (19...de4!? 20.Ne4 f5–/+) 20.Qe2= c6 21.a4 Ra5 22.Bc3 Ra8 23.Bb4 Rf7 24.Qe3 f5 25.e5 f4 26.Qc3 Qg5 27.Qd2 h5 (27...c5!? 28.Bc3 cd4 29.Bd4 Ne5 30.Be5 Qe5–/+) 28.Bd6= h4 29.Ra3 Qh5 Black prepares the advance f3 30.Rb1 b5 31.ab5 Ra3 32.Ba3 f3 33.bc6 bc6 34.Rb8 Kg7 35.g3 (better is 35.Qe3!?=) 35...hg3 36.hg3 Nf4! 37.Bd6? (37.Qf4 Rf4) 37...Qg5–+ The mate threat is Qxg3 38.g4 (38.Kf1 Qg3 39.Bf8 Rf8 40.Rb7 Kg8 41.Qc2 Qg2 42.Ke1 Qg1 43.Kd2 Qf2 44.Kc1 Qe3 45.Kb2 Nd3 46.Kb3–+) 38...Ne2 (38...Ne2 39.Kf1 Qd2–+) 0–1. Bendig,Frank – Tilp,Andreas, corr, 1989.

12.0-0 d5 13.Nb6 ab6 14.Qb3 Rf7 15.de5 fe5–/+.

12.Ba3 Nc6 13.Qb3 (13.Nb6 ab6 14.Qb3 Rf7 15.d5 Na5 16.Qb4 Bd7 17.Bc1–/+) 13...Rf7 (13...Kh8 14.d5 (14.Nb6 ab6 15.d5 Na5 16.Qb4 Bd7 17.Bc1–/+) 14...Na5 15.Na5 Ba5 16.0-0 Bb6 17.Nf2–/+) 14.de5 (14.Nb6 ab6 (14...cb6?! 15.Qd5= b5 16.Bd6 ed4 17.cd4=) 15.d5 Na5–/+ 16.Qb4 Bd7 17.Bc1–/+) 14...fe5 15.0-0-0 (15.Nb6 Qh4 (15...cb6?! 16.Rd1= d5 17.Qd5+=; 15...ab6 16.0-0 Na5 17.Qd1–/+) 16.Nf2 A) 16...cb6?! 17.Rd1+= (17.0-0=); B) 16...ab6–/+ 17.Bc1–/+) 15...Na5 (15...Qh4 16.Rhe1–+ Bd7 17.Bd6–+) 16.Na5–/+ Ba5 17.g4 (17.Kb1!?–/+) 17...Qh4–+ 18.Rd3–+. Pietrzak,Janusz – Domaniewski, corr EU–chT1, 1972.

12.Ba3 ed4 13.Nb6 (13.cd4 d5 14.Nb6 ab6 15.Qb3 Re8 16.0-0 Nc6 17.Qd5–+) 13...ab6 14.Qb3 Rf7 15.cd4–+ d5 16.Nf4 de4 17.Ne6–+.

12.a4!? A) 12...ed4 13.cd4–/+ (13.Nb6 ab6 14.Qd4 Nc6 15.Qc4 Rf7–/+; 13.a5 Bc5 14.cd4 Bb4 15.Kf2 d5–/+) 13...d5 14.a5 dc4 15.ab6 cb6=; B) 12...d5 13.a5 dc4 14.Qa4 Ba5 15.Qc4 Kh8–/+.

12.de5 de5 13.Qb3 Kh8 (13...Rf7 14.Rd1 Qe8 15.Nb6 ab6 16.0-0+=) 14.Rd1 Qe8 15.Ba3 (15.Nb6 ab6 16.Ba3 Ra4+=) 15...Bd7 16.Rd2 (16.Be7 Qe7 17.Nf2 Bf2 18.Kf2 Bc6–/+) 16...Bc6 17.Nb6 ab6 18.Nf2 Qf7 (18...Rd8 19.Rd8 Qd8 20.0-0+=) 19.Bc1 (19.Bb4 b5+=) 19...Qb3 (19...Qh5 20.Qb4 Rfe8 21.0-0–/+) 20.ab3 Nc8 (20...Ra1 21.Ke2+=) 21.Ke2+= Nd6 22.Ke3 Rf7 (22...g6 23.fg6 hg6 24.Re1–/+) 23.Bb2 (23.Rhd1 Rd7=) 23...Rd7 24.Rhd1 Rad8 25.c4 (25.Ba3 Nb5 26.Be7 Rd2 27.Rd2 Rd2 28.Kd2 Kg8+=) 25...Kg8 26.g4 (26.Ba3 b5=) 26...Kf7+= ½–½. Wolf – Steffan,Johannes, corr DDR, 1980.

12.de5 fe5 13.Qb3 Kh8 14.Nb6 ab6 15.0-0–/+.

12.g4 Nc6 A) 13.Qb3 Kh8 14.Nb6 ab6 15.d5 Na5–/+; B) 13.0-0 Bd7 (13...Re8 14.Nb6 ab6 15.d5 Ne7–/+) 14.a4 Be8 15.a5 Bf7–/+; C) 13.Nf2 Bd7 (13...Re8 14.Nb6 ab6 15.d5 Ne7–/+; 13...ed4 14.cd4 Re8 15.0-0 Kh8–/+; 13...Kh8 14.Nb6 ab6 15.d5 Na5–/+; 13...Qe7 14.Nb6 ab6 15.0-0 Na5–/+; 13...Qe8 14.Qb3 Kh8 15.Nb6 ab6–/+) 14.Nb6 ab6 15.Qb3 Kh8–/+; D) 13.Nb6 ab6 14.Qb3 Kh8 15.d5 Na5–/+.

12.g4 ed4 13.Nb6 ab6 14.cd4 Re8 15.0-0 Kh8–/+.

12.g4 d5–+ 13.Nb6 ab6 (13...cb6?! 14.de5 de4 (14...fe5 15.Ba3= Kh8=) 15.ef6 gf6=) 14.de5 (14.c4 de4 15.de5 Qd1–/+) 14...fe5 15.Qb3 c6 (15...h5 16.Rg1 hg4 17.Rg4–+; 15...Kh8–/+) 16.0-0-0 (16.0-0 Qd6–/+) 16...Bd7 (16...Qd6 17.Ng5 b5 18.Kb1–/+) 17.c4 (better is 17.Rd2!?+=) 17...d4–+ 18.c5 Kh8 19.Qg3 (19.Qb6 Qb6 20.cb6 Ra2–+) 19...Ra5 (19...Ra2 20.Qe5 bc5 21.Qc5+–; 19...bc5?! 20.Qe5 b6 21.Kb1–+) 20.Ng5 (20.Kb1 Rc5 21.Nf2 Rb5–+) 20...Nd5 (20...Rc5 21.Kb1–+) 21.Qh4 (21.Nh7 Rc5 22.Kb1 Kh7 23.ed5 Rd5–+) 21...Nf6 22.Rd3 Qe7?? (better is 22...h6 23.Nf3 Qe7–+ (worse is 23...Rc5 24.Kb1–+)) 23.Nh7= Kg8 (23...Rc5? 24.Kb1 Kg8 25.Rh3+–; worse is 23...Qc5 24.Rc3 Nh7 25.Rc5 Rc5 26.Kb1+–) 24.Nf8 Qc5 (24...Qf8!? 25.Rh3 Ne4 26.Qh8 Kf7 27.Qf8 Kf8 28.cb6 Nf2 29.Rh8 Ke7=) 25.Kb1+= Qf8 26.Re1 Qf7 27.a3 Qc4 (27...Rb5 28.Rh3 Kf8 29.Ka1+=) 28.Rh3+/– d3?? (better is 28...Kf8+/–) 29.g5+– Qc2 (29...Bf5 30.ef5 Qh4 31.Rh4+–) 30.Ka1 Ne8 31.g6 Kf8 32.Qd8 1–0. Belov,PI – Abramov,VA, corr I liga Nipsegorodskaya oblast RUS, 1993.

12.g4 Bd7 A) 13.g5 fg5 (13...Bc6 14.gf6 Rf6 15.Rg1 Qe8+=; 13...Nc6 14.Rg1 ed4 15.Nb6 ab6–/+; 13...ed4 14.Nb6 ab6 15.gf6 Rf6–+; 13...d5 14.Nb6 ab6 15.gf6 gf6+=) 14.Qb3 Kh8 15.Ng5 Nf5–+; B) 13.Nb6 ab6 14.0-0 Bc6 15.Qd3 d5–/+.

13.0-0 ed4 14.cd4 d5 15.Nb6 ab6 16.ed5 A) 16...Nd5 17.Rae1 (17.Nf4 Nf4 18.Rf4 Ra5 19.Qf3 Re8 20.a3 Rd5–/+) 17...Qd6 18.Rf3 Rd8 19.Ba3 Qc6 20.Nf4 Nf4–/+; B) 16...Qd6–/+ 17.Rae1 (17.a4 Re8 18.Ba3 Qd5 19.Qe3 Ra4 20.Rae1 c5–/+) 17...Nd5 18.Rf3 Rd8 19.Ba3 Qc6 20.Nf4 Nf4–/+; C) 16...Bf5 17.Ba3 Bh3 18.Qh3 Re8 19.d6 cd6 20.Rae1 d5–/+.

13.0-0 ed4 14.cd4 d5 15.Nb6 ab6 16.Nf4 de4–+ 17.g4 (17.Ne6 Be6 18.Qe6 Re8 19.Qe4 Nd5 20.Qf3 Re3–+) 17...Qd6 (17...Nc6 18.Qh3 Kg8 19.Qb3 Rf7 20.Rae1–/+ Na5–/+; 17...Re8 18.Rae1 Qd6 19.Re4 Bd7 20.Rf3 Ng8–/+) 18.Rae1 Bd7 19.Re4 Rfe8 (19...Bc6 20.Re7 Be8+–) 20.Re3 (20.Rf3 Ng8 21.Re8 Be8–/+; 20.Rfe1 Ng8+=) 20...Ng8 (20...Ba4 21.Qc3 Bb5 22.Ba3 Ra3 23.Qa3 Qd4 24.Rfe1 Qf4 25.Re4–/+; 20...Bc6–/+) 21.Rh3 (21.Ne6 Be6 22.Re6 Re6 23.fe6 Ne7–/+) 21...Nh6–+ 22.Rff3? (better is 22.Rh6 gh6 23.d5–/+) 22...Re4 23.Ng6 (23.Ne6–+) 23...hg6 24.fg6 Rg4 (24...Be6 25.Qb5–+) 25.Rfg3 (25.Rhg3 Be6 26.Qb5 Rg3 27.Rg3 Ra2–+) 25...Rg3 (25...Be6 26.Qe3 Rg3 27.Rg3–+) 26.Rg3 Bc6 (26...Be6 27.Qb5 Ra2 28.Rg2–+) 27.Rh3 (27.a3 Re8 28.Re3 Re3 29.Qe3 Qd5–+) 27...Qd5 (27...Qd5 28.Qd5 Bd5–+) 0–1. Brzoza,Miroslaw – Lahki,O, corr ICCF, 1981.

13.Ba3 Nc6 14.Nb6 ab6 15.d5 Ne7–/+.

13.Nb6 ab6 14.d5 Bd7 15.c4 Ra4–/+.

13.d5 Bc5 (13...c6 14.Ba3 c5 15.Bc1 Ba5+=) 14.Ba3 Ba3 15.Qa3 b5–/+.

13.0-0 Nc6 14.Qb3 Kh8–/+ 15.d5 (15.Nf2 Bd7 16.d5 Na5 17.Qc2 Nc4 18.Bc1–/+; 15.Rab1 Na5 16.Qb4 Bd7 17.Bc1 ed4 18.cd4–/+; 15.Rad1 Na5 16.Qb4 Qe8 17.Nf2 Bd7 18.Rfe1–/+; 15.a3 Bd7 16.Qc2 b5 17.Qd3 Na5 18.Bc1–/+; 15.Rf3 Bd7 16.d5 Na5 17.Qc2 Nc4 18.Bc1–/+) 15...Na5 16.Qb4 Bd7 17.c4 c5 18.dc6–/+.

13.0-0 Nc6 14.d5 Ne7 15.Qd3 (15.c4 Bd7 16.Qd3 Ra4 17.Nf2 Qe8 18.Rfc1–/+; 15.Qb3 Bd7 16.c4 Ra4 17.Rfc1 Qa8 18.Nf2–/+; 15.Bc1 c6 16.dc6 bc6 17.Qb3 d5 18.Be3–/+; 15.Qe2 c6 16.c4 b5 17.dc6 bc6 18.cb5–/+) 15...c6 16.c4 b5 17.dc6 bc6 18.cb5–/+.

13.0-0 Nc6 14.Qf3 A) 14...Bd7 15.Nf2 (15.Qd3 Ra4 16.Rab1 Na5 17.Bc1 ed4 18.cd4–/+; 15.Qd1 Na5 16.Qd3 Qe8 17.Rfb1 Bb5 18.Qf3–/+; 15.Qe2 Ra4 16.Qd3 Na5 17.Nf2 Nc4 18.Rfb1–/+; 15.Rf2 Ne7 16.Qd3 Ra5 17.Re1 d5 18.ed5–/+) 15...Na5 16.Rfb1 Nc4 17.Bc1 Re8 18.d5–/+; B) 14...Qd7 15.Nf2 (15.Rf2 Ne7 16.Qg3 Qc6 17.Qf3 Rd8 18.Re2–/+; 15.Rfc1 Na5 16.c4 ed4 17.Bd4 Nc6 18.Bb2–/+; 15.Qd1 Na5 16.d5 Qb5 17.Qc2 Nc4 18.Bc1–/+; 15.Rfd1 Na5 16.Qg3 Nc4 17.Bc1 ed4 18.Rd4–/+; 15.a3 Na5 16.Qd3 Qc6 17.Nf2 Nc4 18.Bc1–/+) 15...Na5 16.Ng4 Nc4 17.Bc1 d5 18.ed5–/+; C) 14...Na5 15.Nf2 (15.Qd3 d5 16.Rfd1 de4 17.Qe4 Qd7 18.g4–/+) 15...Nc4 16.Bc1 d5 17.Rd1 de4 18.Ne4–/+.

13.0-0 Nc6 14.Rf3 ed4 (14...d5 15.Qb3–/+ Na5 16.Qd5 Qd5 17.ed5 Nc4 18.Bc1–+) 15.cd4+= (15.Qb3 Kh8 16.cd4 Ne7 17.Nf4 c6 18.Ba3=) 15...Qe7 (15...d5 16.Qb3 Rf7 17.ed5 Ne7 18.Re1+=) 16.Nf2 (16.Nf4 Re8 17.Nd5 Qf7 18.Qb3+=) 16...Qf7 (16...Bd7 17.Rc3 Rfc8 18.Qb3+=) 17.d5 (17.Qb3 Re8 18.d5+=) 17...Nb4 (17...Ne5 18.Be5+=) 18.Rg3 Bd7 (worse is 18...Na2 19.Ba3+/–; worse is 18...Ra2 19.Ra2 Na2 20.Qb3+/–) 19.Ng4 Kh8 20.a3 Na6 21.Rh3 (21.Qf3 Nc5–/+) 21...Nc5 (21...Rfe8!? 22.Nf2 Nc5–/+) 22.Qe1+= Qg8 (22...Ra4 23.Qh4 Qg8 24.Nh6 Re4 25.Qe4 Ne4 26.Ng8 Rg8 27.g4=) 23.Rd1 (23.Rg3!? Qf7 24.Rh3=) 23...Rae8 24.Re3 Re7 (24...Qf7 25.Bd4–/+) 25.Qh4+= Qf7 (25...Re4!? 26.Re4 Ne4+=) 26.Rh3= g5 (26...Qg8!? 27.Re3 Re4 28.Re4 Ne4+=) 27.fg6+= Qg6 28.Ne3?? (better is 28.Rg3 Bg4 29.Rg4+=) 28...Bh3 (28...Bh3 29.Qh3 Re4–+). Brzoza,Miroslaw – Sanner, corr, 1981.

13.0-0 ed4 14.Qd4 A) 14...Nc6 15.Qc4 (15.Qd5 Kh8 16.Nf4–/+ Re8 17.Rfe1 Ra5 18.Qd1–+) 15...Kh8 16.Nf4 Re8 17.Nd5 b5 18.Qe2–/+; B) 14...Re8 15.Nf4 Nc6 16.Qc4 Kh8 17.Nd5 b5 18.Qb5–/+.

13.0-0 d5 14.Qb3 Qd6 (14...Rf7 15.de5 fe5 16.c4 de4 17.Rad1 Qe8 18.Ng5+=) 15.Nf2 (15.a4 Rf7 16.Rfd1 ed4 17.Rd4 Qe5 18.c4–/+) 15...c5 16.de5 fe5 17.ed5 Qd5 18.c4+=.

13.Qb3 d5 14.0-0 Rf7 15.de5 fe5–/+.

12.Ba3 Bc7 13.de5 de5 14.Qh5 Kf8 15.Ng5? (better is 15.Rd1 Qe8 16.Qg4= g6 (16...Qf7 17.Qe2 b6 18.Nd6 Bd6 19.Rd6 Qe8=) 17.Bd6 Bd6 18.Rd6 Qf7 19.Qh4 Ng8+=) 15...g6?? (better is 15...fg5 16.Qg5 Kf7–/+) 16.Qh6?? (better is 16.fg6 Kg7 17.Nf7 hg6 18.Qh8 Qh8 19.Nh8+–) 16...Kg8= 17.Rd1 Qf8 18.Qf8 Kf8 19.Ne6 Be6 20.fe6 Rd8 (20...b5 21.Rd7 Bd8+–) 21.Ke2 b5 22.Rd8 Bd8 23.Rd1 Kg7 24.Nd6 (24.Rd7!? bc4 25.Be7 Be7 26.Re7 Kh6 27.Ra7+/–) 24...Bb6+= 25.Nf7 Re8 26.Rd7 c5 27.Nd6 Kf8 28.Ne8 Ke8 29.Rb7 Kd8 (29...Nc6 30.Bc5 (worse is 30.Rh7 Nd8+/–) 30...Bc5 31.Rc7+/–) 30.h4 (30.Bc1 g5+–) 30...h5+/– 31.Bc1 b4 (31...Nc6 32.Rf7 b4 33.Rf6 bc3 34.Bg5+–) 32.Bh6 bc3 (32...Nc6 33.Bg7 Bc7 34.Bf6 Kc8 35.e7 Ne7 36.Rc7 (36.Be7?! Kb7 37.cb4 cb4=) 36...Kc7 37.Be7 (37.Be5?! Kd7=) 37...bc3 38.Bc5+–) 33.Bg7 c4 (33...Ke8 34.Bf6 Bd8 35.Ra7+–) 34.Bf6 Bc5 35.Kd1 1–0. Epelman,Efim Grigorevich – Popov,Boris, corr URS–ch12, 1975.

12.Ba3 Bc7!? 13.de5 de5 14.Qh5 g6 15.fg6 Ng6 =.

12.Ba3 Bc7 13.de5 de5 14.Qh5 g6 15.fg6 Ng6 16.Rd1 Bd7 17.0-0 Qc8 18.Rf6 Bg4 19.Qh6 Bd1 20.Rg6 Qd8 (20...c5 21.Re6 Qe6 22.Qe6 Kd8+–) 21.Re6 (better is 21.Qg7 Qh4 22.Re6 Kd8 23.Be7 Qe7 24.Re7 Bg4 25.Rc7 Re8 26.Rb7 Re7 27.Qe7 Kc8 28.Nd6) 21...Kd7 22.Re7 Kc8 (22...Qe7 23.Be7 Be2+–) 23.Qe6 (23.Ne5 Bb3 24.Rd7 Bb6 25.Kh1 Qg8+–) 23...Kb8 24.Rc7! a5 (24...Kc7 25.Qd6; 24...Qc7 25.Bd6) 25.Rd7 Qg8 (25...Ra6 26.Rd8 Rd8+–) 26.Qe5 Ka7 27.Qa5 Kb8 28.Bd6 (28.Rd1 Ra5 29.Bd6 Ka7 30.Na5 Qa2=) 28...Kc8 29.Qc7 1–0. Borrmann,Fritz – Erjavac,E, CiF, 1990.

12.Ba3 Bd7?? 13.de5?? (better is 13.Nd6 Kf8 14.de5+–) 13...de5= 14.Qh5 Kf8 15.Ng5? (better is 15.Rd1 Qe8 16.Qe2=) 15...g6?? (better is 15...fg5 16.Ne5 Be8 17.Qg5 c5–/+) 16.Qh6 (16.fg6!? Kg7 17.Nf7 hg6 18.Qh8 Qh8 19.Nh8 c5 20.Ng6 Kg6+–) 16...Kg8+/– 17.Rd1 (17.Nb6 ab6 18.Rd1 fg5= (18...Ra3 19.Ne6 Be6 20.Rd8 Kf7 21.Rh8 Bf5 22.Qh7 Ke6 23.Re8 Be4 24.Qe7 Kf5 25.Qd7 Kf4 26.g3 Kf3 27.0-0 Ke3 28.Re1 Kf3 29.Qd1; 18...gf5 19.Ne6 Be6 20.Rd8 Rd8 21.Be7+–)) 17...Qf8?? (better is 17...Qe8 18.Nd6 Qf8+–) 18.Qf8+– Kf8 19.Ne6 (better is 19.Rd7 c5 20.Ne6 Ke8 21.Rb7+–) 19...Be6+/– 20.fe6 1–0. Rodin,Efim Grigorievich – Popov, corr, 1972.

12.Nb6 Qb6 13.Qh5 (13.Ba3 ed4 14.Qd4 c5 15.Qe3 Qa6 16.Bc1 0-0–/+) 13...g6 14.fg6 Ng6–/+ 15.0-0-0 Be6 16.Rhf1 0-0–/+.

12.Qh5 Kf8 (12...g6 13.fg6 Ng6 14.de5 de5 15.Rd1 Qc7 16.Nd6 Ke7=) 13.Ba3 c5 14.de5 de5 15.Rd1 Qe8 16.Qf3 Bd7=.

10.0-0 A) 10...ed4 11.cd4 (11.Nf2 dc3 12.Nc3 Ne5 13.Be6 Be6 14.fe6 0-0 15.Na4–+) 11...d5 12.ed5 Nd5 13.Re1 Kf8 14.fg6 Bh3 15.g7–+; B) 10...gf5 11.ef5 (11.Qh5 Kd7 12.ef5 d5 13.Bd3 Qe8 14.Qh4 Qf7 15.Nd2–/+) 11...h5 12.Be6 d5 13.Kh1 h4 14.de5 Ne5 15.Bc1–/+; C) 10...d5 11.ed5 (11.Bd5 Nd5 12.ed5 Qd5 13.Re1 Bf5 14.Nf4 Qb5 15.Qc1–+) 11...Nd5 12.fg6 hg6 13.Qf3 Nc3 14.Bc3 Nd4 15.Qe4–+.

10.a4 A) 10...gf5 11.Qh5 (11.d5 Na5 12.Bd3 h5 13.Nd2 Be3 14.Nf1 fe4 15.Bb5–+) 11...Kd7 12.ef5 d5 13.Bb5 a6 14.a5 Ba7 15.Bc6–/+; B) 10...ed4 11.cd4 (11.Bb5 dc3 12.Bc3 0-0 13.fg6 hg6 14.Nf4 Ne5 15.a5–+) 11...Na5 12.Ba2 d5 13.Nf2 Nac6 14.ed5 Nb4 15.fg6–/+; C) 10...Na5 11.Ba2 (11.Bb5 c6 12.Bd3 ed4 13.cd4 d5 14.fg6 hg6 15.Nf4–+) 11...ed4 12.cd4 d5 13.Nf2 Nac6 14.ed5 Nb4 15.fg6–/+.

10.Bb5 A) 10...a6 11.Ba4 (11.Bc6 Nc6 12.d5 Ne7 13.c4 c6 14.Rf1 cd5 15.cd5–+) 11...Bd7 12.Nf2 ed4 13.cd4 d5 14.Ng4 Rf8 15.fg6–/+; B) 10...Bd7 11.Nf2 (11.0-0 d5 12.Nf2 de4 13.fg6 hg6 14.Ne4 Nf5 15.Re1–/+) 11...Qc8 12.Ng4 Rf8 13.Nh6 d5 14.ed5 Nd5 15.Qf3–/+; C) 10...ed4 11.cd4 (11.Nf4 a6 12.Bc6 bc6 13.cd4 d5 14.fg6 hg6 15.Nd2–/+) 11...d5 12.Nc3 Ba5 13.fg6 hg6 14.Nf4 de4 15.d5–/+.

10.Rf1 A) 10...gf5 11.ef5 (11.Qh5 Kd7 12.ef5 d5 13.Bb5 ed4 14.cd4 Qe8 15.Qe2–+) 11...h5 12.Be6 d5 13.de5 Ne5 14.Qe2 Nc4 15.Ba3–/+; B) 10...Na5 11.Bd3 (11.Bb5 c6 12.Be2 ed4 13.cd4 d5 14.Nf2 gf5 15.Bh5–+) 11...ed4 12.cd4 Nac6 13.d5 Ba5 14.Ke2 Ne5 15.Be5–/+; C) 10...ed4 11.fg6 (11.cd4 d5 12.ed5 Nd5 13.Qe2 Nce7 14.Nc3 Ba5 15.Bd5–+) 11...hg6 12.cd4 Bh3 13.gh3 Rh3 14.Rf6 d5 15.ed5–/+.

10.Nf2 ed4 11.0-0 (11.cd4 d5 12.ed5 Nd5 13.Qe2 Nde7 14.fg6 hg6–/+ 15.Ne4–/+; 11.fg6 hg6 12.cd4 d5 13.ed5 Nd5 14.Qe2 Nde7 15.Ne4–/+) 11...Ne5 (11...dc3 12.Nc3 Ne5 13.Be6 Be6 14.fe6 0-0 15.Na4–+) 12.Bb3 (12.fg6 hg6 13.cd4 Nc4 14.Qa4 c6 15.Qc4–+) 12...dc3 (12...d3 13.Kh1 Bf2 14.Rf2 d5 15.ed5–+) 13.Nc3 Bd7 (13...Rb8 14.Kh1 Be3 15.Nd3–+) 14.Bc1 (14.Kh1 Be3 15.Nd3–+) 14...gf5 (14...N7c6 15.Bh6–+) 15.Qh5 (15.Nd5–+) 15...N5g6 16.Bh6 Bd4 17.Bg7 Bc3 18.Rac1 Bc6 (18...Bb5 19.Rfd1 Kd7 20.ef5 Nf4 21.Be6 Ne6 22.fe6 Kc8 23.Bh8 Bc6 24.Qh7 Bb2+/–) 19.ef5+/– Bg2 20.fg6 (20.Kg2 Nf5 21.Bh8 Ne3 22.Kg1 Qe7 23.Rc3 Nf1 24.Kf1 Kd8+–) 20...Bf1= 21.Rc3 (21.Rc3 Kd7 A) 22.Bh8 Qh8 23.Kf1 f5+= (23...hg6?? 24.Qb5 Kd8 25.Be6+–); B) 22.Ne4+=). Nemec,Zdenek – Jacewicz,Grzegorz, Friendly match, 2002.

10.Nf2 d5 11.ed5 (11.Bb5 ed4 12.fg6 hg6 13.cd4 0-0 14.Rf1 de4 15.Ne4–/+) 11...Nd5 12.Qf3 Nf4 13.g3 Na5 14.Nd2 Nc4 15.Nc4+=.

10.Nf2 gf5 11.Qh5 (11.0-0 Ng6 12.d5 Na5 13.Bd3 Nf4 14.Bc1 Nd3 15.Qd3–+) 11...Kd7 12.ef5 d5 13.Ng4 ed4 14.Nf6 Kd6 15.Ba3–/+.

11.Ba3 Nce7 12.Qf3 (12.0-0 Bb6 13.d4 ed4=) 12...c6–/+ 13.0-0 b5 (13...Bf5? 14.Qf5 b5 15.Bd5 Qd5 16.Qg4 Bb6 17.Kh1+/–) 14.Be7 Ke7 15.Bb3 Bb6 16.Kh1 Bb7 17.Nf2 (17.c4 bc4 18.Bc4 Kf7–/+) 17...Qd7 18.Ne4 c5 19.Bd5 Qd5 20.d3 (20.Re1 c4 21.Qg3 Kf8–+) 20...Rad8 21.Rd1 c4 22.Nbd2? (better is 22.a4–+) 22...Qd3 (22...cd3?! 23.a4–+) 23.Qg4 Rhg8 (23...g5!? 24.Rdb1–+) 24.g3 (24.Rdb1–+) 24…Be3 0–1. Dresling,Stig (2020) – Justesen,Aage (1870), Denmark veterans computerfree ch, 2002.

12.Ba3 A) 12...c6 13.Ng5 g6 (13...Bb6 14.Kh1 g6 15.fg6 Kg7 16.Be7 Qe7+–; 13...fg5 14.f6 Qb6 15.Kh1 c5 16.fg7 Kg7+–) 14.fg6 Kg7 15.Nf7 Bb6 16.Kh1 hg6+/–; B) 12...Bb6 13.d4 B1) 13...ed4 14.Nf4 d3 15.Kh1 (15.Rf2= c6 16.Ng6 hg6+=) 15...c5 16.Re1 Bf5+/–; B2) 13...Qd7 14.Ng5 g6 15.Qh6 Ke8 16.Qg7 Rf8+–; B3) 13...c6 14.Ng5 g6 15.fg6 Kg7 16.Be7 Qe7+/–.

12.a4 Qe8 13.Qh4 Bb6 (13...Qd7 14.Ba3 c6 15.d4 ed4 16.cd4 Ke8+=; 13...c6 14.Ba3 Qd8 15.Kh1 b6 16.Qh5 c5+=) 14.Kh1 Bc5 15.Ba3 Ba3 16.Na3 Nb6–/+.

12.d4 A) 12...b5 13.Bb3 ed4 (13...Bb7 14.de5 Qe8 15.Qe2 Bb6 16.Kh1 a6+=; 13...Bb6 14.Ba3 b4 15.Bb4 a5 16.Ng5 g6+–; 13...Kg8 14.de5 fe5 15.c4 Bb6 16.Kh1 bc4+/–; 13...Qd6 14.Na3 Qc6 15.de5 Bc3 16.Bc3 Qc3+=) 14.cd4 c6 15.Nc3 Bc3 16.Bc3 Qe8–/+; B) 12...ed4 13.cd4 c6 14.Nf4 Qe8 15.Qh3 Bf5 16.Qa3 Bb4–/+.

12.Ng5 Bb6 13.d4 fg5 14.f6 Nf5 (better is 14...Ng6 15.Ba3 c5 16.de5 Be6 17.Qg5 gf6 18.ef6 Kf7–/+) 15.Ba3+= c5 16.de5? (better is 16.dc5 gf6 17.Rd1+=) 16...g6–+ 17.Qg5 Nde3 18.Rf5 Nc4 (18...Nf5 19.e6 Qd1 20.Kf2 Qc2 21.Nd2 Be6 22.Be6–+) 19.Qh6 (19.Rf1 Kf7 20.Bc1 Qd3–+) 19...Kf7 20.e6 Ke6 21.Rf1 Nd6 (21...Na3 22.Na3 c4 23.Kh1+–) 22.Nd2 Qf8 (better is 22...Nf5 23.Rae1 Kd7–+ (23...Kf6?! 24.g4–/+)) 23.Rae1+= Kd7 24.Re7 Kc6?? (24...Kd8 25.Qe3 Bd7 26.Bc5 Bc5 27.Qc5 Nc8+=) 25.Qf4+= Bf5 (25...Bd8 26.Qf3 Kb6 27.Rb1 Ka6 28.Qd3 c4 29.Nc4 Bf5 30.Qd6 b6+–) 26.Qa4+/– Nb5 27.Nf3 Bc7?? (27...Qf6 28.Ne5 Kd6 29.Rd7 Bd7 30.Qd1 Kc7 31.Qd7 Kb8 32.Rf6 c4 33.Kf1 Bc7 34.Qb5 a5+–) 28.Nd4! cd4 29.Rf5! gf5 (29...gf5 30.Qc4 (30.Re6)) 30.Qc4 Kb6 31.Re6 (31.Bc5 Ka5 32.Bb4 Kb6 33.a4 Bh2 34.Kh1 Qe8 35.Re8 Rae8 36.Qc5 Ka6 37.ab5) 31...Nd6 32.Bc5 1–0. Pietrzak,Janusz – Marcinkiewicz,Aleksander J, corr EU–ch GT186, 1981.

12.Ng5 fg5 13.f6 Bb6 14.d4–+ Ng6 15.Ba3 c5 16.dc5 gf6 =.

12.Ng5?? fg5–+ 13.f6 Ng6 (13...Nf6 14.Rf6) 14.Ba3 Bb4?? (better is 14...c5 15.Bc5 Kf7–+) 15.Bb4+– (15…c5 16.Bc5 Kf7 17.d4 (17.Qg5?! gf6 18.Bd5 Kg7+=) 17...gf6 18.de5+–; < 15.cb4 gf6 16.Qg5 Ke8–/+) 1–0. Pietrzak,Janusz – Tacu, corr ICCF, 1976.

12.Ng5 fg5 13.f6 Ng6 14.Ba3 c5 15.Bc5 Kf7 16.Be7 Qb6–+.

9.0-0 a6 10.d4 (10.Qf3 Bb6 11.Kh1 gf5 12.Qh5 Kd7 13.ef5 d5 14.Bb3–/+) 10...ed4 11.cd4 d5 12.ed5 Nd5 13.Qe2 Nce7 14.fg6–/+.

9.0-0 Bb6 10.Nf2 (10.d4 d5 11.ed5 Nd5 12.fg6 hg6 13.Qf3 Nc3 14.Bc3–+) 10...d5 11.ed5 Nd5 12.Qf3 Nce7 13.fg6 hg6 14.Ba3–/+.

9.0-0 d5 10.ed5 Bb6 (10...Nd5 11.Qf3-/+ Nce7 12.fg6 hg6 13.Nf2 c6-/+) 11.d4 Nd5 12.fg6 hg6 13.Qf3 Nc3-+.

9.0-0 d5 10.ed5 Nd5 A) 11.fg6 hg6–+ (11...Bb6 12.d4 hg6 13.Qf3 Nc3 14.Bc3–+) 12.Qf3 Bb6 13.d4 Nc3 14.Bc3–+; B) 11.Qf3 Nce7 12.fg6 hg6 13.Nf2 Rh4 14.d3–/+.

9.0-0 d5 10.Bd5 Nd5 11.ed5 Qd5 12.d4 Bb6 13.Re1 Bf5 14.Nf4–+.

9.0-0 d5 10.fg6? dc4 11.g7 Bb6 12.Kh1–+.

9.0-0 d5 10.fg6? hg6 11.Qf3?? (better is 11.ed5 Nd5 12.Qf3–+) 11...dc4–+ 12.Qf6 Rh3 13.gh3 (13.Qf7 Kd7 14.gh3 Qg8–+) 13...Qd6 (13...Qd3 14.Qf8 Kd7 15.Qf3 Qf3 16.Rf3–+) 14.Qh8 (14.Qf7 Kd8 15.Qc4 Bb6 16.Kg2 Be6–+) 14...Kd7 15.a4 1–0. Rodin,Efim Grigoryevich – Chutriumov,G, corr, 1965.

9.0-0 gf5 10.Qh5 Kd7 11.Qf7 (11.ef5 d5 12.Bb3 Bb6 13.Kh1 Na5 (idea c6)) 11...Qf8 12.Qf8 Rf8 13.ef5 Bb6 14.Kh1 d5. W Labahn.

9.0-0 Rf8 10.a3 (10.d4 ed4 (10...Bb6-/+ 11.Nf2 ed4 12.cd4 d5 13.ed5 Nd5=+; 10...a6 11.Nf2 d5 12.ed5 Nd5 13.Qf3 Nb6-/+) 11.cd4 d5 12.ed5 Nd5 13.Qe2 Qe7-/+; 10.Nf2 d5 (10...Bb6 11.d4 Bd7 12.Bc1 d5 13.Bd5 Nd5=+) 11.ed5 Nd5 12.Ba3 Nde7 13.fg6 hg6-/+) 10...d5 (10...Bb6 11.Nf2 d5 12.ed5 Na5 13.Bb5 Bd7-/+; 10...Bd7 11.Nf2 Bb6 12.d4 Qc8 13.fg6 hg6-/+; 10...a6 11.d4 b5 12.Bb3 Bb6 13.Nf2 Bd7=+) 11.ed5 Nd5 12.Qf3 Nce7 (12...Nb6 13.Bd3 Na4 14.Ra2-/+) 13.fg6 hg6 14.d4 Bb6 15.Kh1 (15.Nd2 Bf5-/+) 15...ed4 16.Re1 (16.cd4 c6 17.Nf4 Nf4 18.Qf4-/+) 16...dc3 (better 16...Ne3 17.Bb5 c6 18.cd4 Bd4 (18...cb5?! 19.Qe3 g5 20.Bc3-/+) 19.Bd4 Qd4 20.Qe3 Qe3 (20...Qa1?? 21.Qe7) 21.Re3 Bh3-/+) 17.Nc3= Nc3 18.Bc3 Bc5 (better 18...Bh3 19.Qh3 Bc5+=) 19.Rad1 Bd6 20.Bf6 Rf6 (20...Bh3 21.Be7 Rf3 22.Bd6 Kd7 23.Be7 Kc6 24.Bd8 Rc3 25.Bd5 Kb6+-) 21.Qf6 a6 (21...Bh3 22.Bb5 Qd7 23.Bd7 Kd7 24.Re7 Kc6 25.Rc7 Kb5 26.Qb2 Ka6 27.Rd6 b6 28.Ra7 Ra7 29.Qb6) 22.Qh8 (22.Re6 c5 23.Qh8 Kd7 24.Rdd6 Kc7 25.Qe5 Be6 26.Ra6 Kd7 27.Be6 Ke8 28.Qh8 Ng8 29.Qg8 Ke7 30.Qf7) 22...Kd7 23.Be6 Kc6 24.Qd8 (24.Qd8 Be6 25.Qa8 (25.Re6?! Rd8 26.Rdd6 Rd6 27.Re7 Rd3+/-) 25...Bh3 26.gh3+-) 1-0. Gross,Wilhelm - Suess,Stefan, corr, 1985.

9.Ba3 A) 9...a6 10.0-0 (10.Qf3 b5 11.Bb3 Rf8 12.Nf2 Bb6 13.Qh3 Na5 14.Qh7–/+) 10...d5 11.ed5 Nd5 12.Kh1 b5 13.Bb3 Nce7 14.fg6–/+; B) 9...Rb8 10.0-0 (10.Qf3 b5 11.Bb3 Rf8 12.Nf2 b4 13.cb4 Bb4 14.Bb4–/+) 10...d5 11.ed5 Nd5 12.Qf3 Nb6 13.Bb5 Na8 14.fg6+=; C) 9...Bb6 10.Qf3 (10.Rf1 a6 11.fg6 hg6 12.Qf3 f5 13.Ng5 Rh2 14.d3–/+) 10...Rf8 11.Rf1 Na5 12.Bb5 c6 13.Be2 d5 14.fg6–/+.

9.Qb3 A) 9...Rf8 10.Qd1 (10.g4 Bb6 11.Na3 d5 12.Bd5 gf5 13.Bc6 Nc6 14.ef5–+) 10...d5 11.ed5 Nd5 12.Ba3 Nce7 13.fg6 hg6 14.Qf3–/+; B) 9...gf5 10.Bf7 (10.ef5 d5 11.Bd3 e4 12.Be2 Bf5 13.g4 Bc8 14.Nf4–+) 10...Kf8 11.Bh5 d5 12.ed5 Qd5 13.Bf3 Qb3 14.ab3–+; C) 9...Bb6 10.fg6 (10.Bf7 Kf8 11.a3 Na5 12.Qa2 d5 13.Bd5 Nd5 14.ed5–+) 10...hg6 11.Bf7 Kf8 12.a3 Bh3 13.gh3 Rh3 14.Qc4–+.

9.Be6 A) 9...Bb6 10.Rf1 (10.Bc8 Qc8 11.Rf1 Rg8 12.g4 Qd7 13.d4 d5 14.g5–+) 10...Be6 11.fe6 Rf8 12.Qf3 f5 13.Ng5 Nc8 14.Qg3–/+; B) 9...Be6 10.fe6 Bb6 11.Rf1 Rf8 12.Qf3 f5 13.Ng5 Nc8 14.Qg3–/+; C) 9...d5 10.ed5 (10.Bc8 Rc8 11.Rf1 Rf8 12.fg6 hg6 13.Ba3 de4 14.Be7–+) 10...Nd5 11.Bc8 Rc8 12.0-0 Bb6 13.Kh1 Bc5 14.c4–/+.

9.Nf2 A) 9...d5 10.ed5 (10.Bb5 a6 11.Ba4 de4 12.Ne4 Nf5 13.Bc6 bc6 14.Qa4–+) 10...Nd5 11.Qf3 Nce7 12.fg6 hg6 13.Ba3 c6 14.Ne4–/+; B) 9...a6 10.0-0 (10.Qf3 gf5 11.Qh5 Kd7 12.ef5 d5 13.Ng4 Qf8 14.Bb3–/+) 10...d5 11.ed5 Nd5 12.Qb3 Nce7 13.Ne4 Bb6 14.d4–/+; C) 9...Bb6 10.d4 (10.Qf3 gf5 11.Qh5 Kd7 12.ef5 d5 13.Bb3 Qe8 14.Qf3–/+) 10...ed4 11.fg6 hg6 12.cd4 d5 13.ed5 Nd5 14.Qe2–/+.

9.Qf3 Bb6 10.Na3 Na5 11.Bd3 Bd7 (11...Rf8 12.Rb1–/+) 12.Nc4 (12.fg6 hg6 13.Qf6 Rf8+=) 12...Nc4 13.Bc4 d5 (13...gf5 14.Qh5 Ng6 15.ef5+–) 14.ed5 Nf5 (14...gf5?! 15.d4+=) 15.0-0-0 (15.Ba3 Nh4 16.Qg3 g5–/+) 15...Qe7 16.Rdf1 (16.d4 0-0-0–+) 16...Rf8 17.Nf2 Nd6 (17...0-0-0 18.Ne4–+) 18.Bb3 (18.Ba3 0-0-0–+) 18...0-0-0 19.Ne4 Ne4 20.Qe4 f5 21.Qc2 f4 22.c4 (22.d3 Be3 23.Kb1 Qd6–+) 22...Bf5 23.Qc3 Bd4 24.Qa5 Bb2 25.Kb2 e4 (better is 25...Kb8!?–+) 26.Qa7–/+ Qe5 27.Ka3 Kd7 (27...c6 28.dc6 Qd6 29.c5 Qc6 30.Rf4=) 28.Ba4 (28.Qb7 Ra8 29.Ba4 Ke7–/+) 28...Ke7–/+ ½–½. Brzoza,Miroslaw – Biczynski,Jan, corr Poland, 1991.

9.Qf3 Bb6 10.d3 Na5 11.Be6 d5 12.Nd2 Be6 13.fe6 Rf8 14.Ba3–/+.

9.Qf3 Bb6 10.fg6 hg6 11.Ng5 Rf8 12.Nh7 +/–.

9.Qf3 Bb6 10.fg6 Ng6 11.d3 Na5 12.Nd2 Rf8 13.Qh5 Bh3 14.Qh3–/+.

9.Qf3 Rf8 10.0-0 Bb6 11.Nf2 Na5 12.Bd3 c6 13.fg6 hg6 14.Be2 f5–/+.

9.Qf3 Rf8–/+ 10.0-0 Bb6 11.Kh1 Na5 12.Be6 d5 13.ed5 Nc4 14.Ba3–/+.

9.Qf3 Rf8 10.0-0 Bd7 11.Nf2 Bb6 12.d3 Na5 13.Be6 Be6 14.fe6 Qc8–+.

9.Qf3 Rf8 10.a3 Bb6 (10...Bd7 11.0-0 Bb6 12.Nf2 Qc8 13.d3 gf5 14.Qh5 Ng6–/+) 11.d3 Na5 12.Ba2 c6 13.Nd2 d5 14.Rf1 Bc5–/+.

9.Qf3 Rf8–/+ 10.Nf2 Bb6 11.0-0 Na5 12.Bd3 c6 13.fg6 hg6 14.Be2–/+.

9.Qf3 Rf8 10.Nf2 Bb6 11.0-0 Na5 12.Be6 Be6 13.fe6 Qc8 14.d4 Qe6–+.

9.Qf3 Rf8 10.Nf2 Bd7 11.0-0 Bb6 12.d3 Na5 13.Be6 Be6 14.fe6 Qc8–+.

10.0-0 Bb6 11.Kh1 Qd7 12.Qh5 Kd8 13.Qf7 Qe8 14.Qf6 Rf8–/+.

10.0-0 d5 11.Qh5 Kd7 12.ed5. W Labahn.

10.0-0 Qd7 11.Kh1 Bb6 12.Qh5 Kd8 13.Qf7 Qe8 14.Qf6 Rf8–/+.

10.0-0 f4 11.d4 Bb6 12.Kh1 Ng6.

10.ef5 Bf5 (10...h5 11.Be6 Bb6 12.d3 d5 13.Nd2 e4 14.de4 Ne5+=) 11.g4 Bg6 12.Qf6 Rf8 13.Qh4 Bb6 14.Rf1 Rf1–+.

10.Qh5 Kd7 11.ef5 d5 12.Bb3 Qe8 13.Qf3 e4 14.Qe2–/+.

10.Qh5 Kd7 11.ef5 Qe8 12.Bf7 Qf8 13.g4 Nd8 (13...Kd8 14.Bc1 Bd7–/+) 14.Bb3 c6 (14...Qg7–/+) 15.d4! 15.Sa3, 16.0-0-0 15...ed4 16.0-0 d5 17.Nf4 Rg8 18.c4 Kd6 (18...Rg5 ? 19.Ne6 ! 19...Ne6 20.fe6 Ke6 21.Qg5) 19.cd5 Rg5 20.Qh3 h5 (20...Bf5 !? 21.Bd1 ! 21...Bg4 ? 22.Bg4 f5 23.Qa3 c5 24.Qa5 Rg4 25.Kh1 Qh6 26.Bc1+/–) 21.Ba3 c5 22.Ne6 Ne6 23.Qg3 Nf4Ι 24.Qf4 Kd7 25.Ba4 Nc6 26.dc6 bc6 27.h3 Bc7 (27...hg4 28.Rd1; 27...Qd6 28.Bc5 !? 28...Qc5 29.Rc1) 28.Qe4 Qd6 29.Qe6 Qe6 30.fe6 Ke6 31.Nd2 hg4 32.Bb3 Ke7 33.Ne4 Re5 (33...Rf5 34.Bc5 Kd8 35.Rad1+/–; 33...Ba6 34.Ng5 Bf1 35.Bc5 Kd7 36.Be6 Ke8 37.Rf1+/–) 34.Rae1 f5 35.Nc5 Kf6 36.hg4 Re3 (36...Re1 37.Re1 Bd6 38.Re8 Rb8 39.Ne4+–) 37.Bb2 Rg3 38.Kf2 Rg4 39.Re8 Bg3 (39...Bd6 40.Nd7+–) 40.Kf3 Bd6 41.Nd7 Bd7 42.Ra8 c5 ! 43.Rg8 ! 43...Bb5 44.Rf2 Rf4 45.Kg2 Rh4 46.a4 Ba6 47.Bd5 (47.Re8 ? 47...Rg4 48.Kh3 Rg3 49.Kh4 Rb3–/+) 47...c4 48.Re8 1–0. Rodin,Efim Grigorevich – Zverev,A, corr ICCF EU/M, 1980.

10.Qh5 Ng6?? 11.ef5+– Bf5 (11...Nce7 12.fg6 (12.Bb5 c6 13.fg6 Kd7 14.g7 Rg8 15.Be2 Rg7 16.Qf3+/–) 12...Ng6 13.Nf4 ef4 14.Qa5 Qe7 15.Kf2 Ne5 16.Na3+–; 11...Qe7 12.fg6 (12.Bd5 Qg7 13.fg6 hg6 14.Qf3 Nd8 15.Nf2 c6 16.Bb3+/–) 12...Qg7 13.gh7 Kd8 14.Bd3 Ne7 15.Qf3 f5 16.Be2+–) 12.Qf5 Bb6 (12...Rf8 13.Be6 Bb6 14.Rf1 Bc5 15.g4 Qe7 16.d3+–) 13.Na3 (13.Rf1 Rf8 14.Ba3 Nce7 15.Qh5 Qd7 16.d3+–) 13...a6 (13...Rf8 14.Be6 Bc5 15.Rf1 a6 16.Nc2+–) 14.Ng5 (better is 14.Bd5!?+– Rf8 15.Nc4 Bc5 16.d4+–) 14...d5 (14...Nh4!? 15.Bf7 Kf8 16.Ne6 Ke7+/–) 15.Nh7!+– (15.Nh7 Nce7 16.Nf6 Kf7 17.Qf3 dc4 18.Nh5 Kg8 19.Nc4+–) 1–0. Koerner,S – Woschkat,Karl_Heinz, BdF, 1985.

12.Bb3 Qe8 13.Qf3 e4 14.Qe2 Kd8–/+.

12.Bb3 Qe8 13.Qh4 Nf5 14.Qg4 Qg6 15.Qg6 hg6 16.Bd5 Kd6 (16...Nce7 17.Be4–+) 17.Be4 (17.Bf7 Nh4 18.Ba3 Kd7–/+) 17...Be6 18.Na3 (18.Ba3 Kd7–+) 18...Rh4 (18...Bd5 19.Nf2–+) 19.d3 (19.Nf2 Bb6 20.Nb5 Kd7–+) 19...Ne3 Black begins to deal mighty blows 20.Kf2 (better is 20.Nf2–+) 20...Bb6 21.Ke2 Ng2 (21...Bh3 22.gh3 f5 23.Nb5 Kd7 24.Bf3–+) 22.Bg2 Bh3 (22...Rh3?! 23.Bh3 Bh3 24.Nc4 Kd5 25.Nb6 ab6 26.Rhg1–/+) 23.Nc4 Kd7 24.Nb6 ab6 25.Bd5 Be6 26.Be4 Rah8 27.Ba3 (27.Raf1 f5 28.Bc6 bc6–+) 27...Rh2 28.Rh2 Rh2 29.Ke1 (29.Kf1 f5 30.Bg2 g5–+) 29...f5 (29...f5 30.Bf3 g5–+) 0–1. van Gompel,Hugo – Labahn,Wolfgang, corr ICCF TT–4–90, 1991.

9.Qh4 Nf5 (better is 9...d5!? 10.Bf1 (10.Bd5 Nd5 11.ed5 Qd5 12.Qf6 Rf8 13.Qg7 Qg2–+) 10...de4 (10...Rf8–+ 11.Qh7 de4 12.fg6 Bf5 13.Be2 Qd5–+) 11.fg6 Ng6 12.Qe4 Be6 13.Nf3 Rg8–+; 9...gf5 10.Qh5 Kd7 11.ef5 d5 12.Be2 Qe8 13.Qh3 Kd8–/+) 10.ef5= Bf5 11.Ne2 (11.Bd5 Bb6 12.Ne2 Na5 13.g4 Bd3=) 11...Bb6 (11...d5 12.Bb5 a6 13.Bc6 bc6=) 12.Ng3 (12.Bd5 Qe7 13.Rf1 Rf8=) 12...g5 (12...d5!? 13.Bb5 Bd7=) 13.Qh6+/– Bg6 14.Nh5 Qe7 15.Ng7 (15.Rf1!? Bh5 16.Qh5 Kd8 17.Qf3+/–) 15...Kd8= 16.a4 (16.Bd5 e4 17.Bc6 bc6=) 16...Kc8 (16...e4 17.Ne6 Kc8 18.Qh3+=) 17.Na3 (17.Bd5 Na5=) 17...Kb8 (17...Be4 18.Rf1 d5 19.Be2=) 18.Rf1 Na5 19.Ba2 a6 20.Nf5 Qd8 (20...Qd7 21.Qg7 Qg7 22.Ng7+=) 21.Qh3 (21.h4 g4+=) 21...Ka7 (21...d5 22.Qd3 Bf7 23.Rb1=) 22.Nc4 (22.d3 Qd7=) 22...Nc4 23.Bc4 d5 24.Be2 (24.Bb3 Qd7=) 24...c5 (24...h5 25.Ba3 Rh7 26.a5 Ba5 27.Ne7+/–) 25.Ne3 (25.c4 d4+=) 25...Rc8 (25...c4 26.Ng4 Rf8 27.Ba3+=) 26.Qe6 The backward pawn on f6 becomes a target (26.a5 Bc7+=) 26...d4 27.Nc4 (27.a5 Bc7 28.Nf5 d3+=) 27...Rc6= 28.Qh3 Bc7 29.Bg4 h5 30.Bf5 g4 31.Qd3 e4 32.Qc2 (32.Qe2 Bf5 33.Rf5 Qd7=) 32...Bf7 (32...Bh2? 33.Bg6 Qg8 34.Be4 Qc4 35.d3+–) 33.Na3 (33.cd4 cd4 34.d3 ed3 35.Bd3 Bc4 36.Bc4 d3 (36...Bh2?! 37.Qd3+=) 37.Qd3 Re8 38.Kd1 Rc4–+) 33...d3 34.Qc1 Bh2 35.c4 Re8 (35...Bg3 36.Kd1–+) 36.Kd1–/+ Bg3 37.Bc3 e3 38.de3 d2 39.Bd2 Re3 40.Kc2 (40.Nb5 Ka8+=) 40...Re2 41.Nb5 (41.Bd3 Rg2 42.Be4–+) 41...Kb8 42.Nc3 (42.Ra3 Bc4 (42...Rg2 43.Rg3 Qd2 44.Qd2 Rd2 45.Kd2 Bc4 46.Rh1 ab5 47.Rh5+/–) 43.Rg3 ab5–+) 42...Rg2 43.Rg1 Rg1 44.Qg1 Be5 45.Be4 (45.Rb1 Bc4 46.Qg2 Rb6–+) 45...Bc4 46.Rb1 0–1. Cottarelli,Franco – Acunzo,Domenico, corr ITA–chT1, 1984.

10.Ne2 Bb6 11.d4 (11.Ng3 Na5 12.Na3 c6 (12...Nc4 13.Nc4 d5 14.Nb6 ab6 15.d4 de4+=; 12...Bc5 13.Be2 0-0 14.d4 Nf4 15.Qf3 Ne2+=) 13.Rf1 d5 14.Bd3 Ke7 15.Qf3 Nf4–/+) 11...Na5 (11...Qd7 12.Rf1 Qg4 13.Qg4 Bg4 14.Bb5 0-0 15.a4 Rab8+=) 12.Bd3 Be6 (12...Qe7 13.Nd2 Be6 14.Rf1 0-0-0 15.d5 Bd7+=) 13.Nd2 Qe7 (13...Qd7 14.Rf1 Rf8 15.h3 c6+=) 14.0-0 (14.Rf1 0-0-0 15.d5 Bd7+=) 14...0-0-0 15.Kh1 c6 (15...Qg7+=) 16.Qf3 Rdf8 17.d5 Bd7 18.dc6 Bc6 19.Qh3 Bd7 20.Qh6 Be6 21.c4 (21.a3 Qd7+=) 21...Kb8 22.Bc3 Rc8 23.Ba5 Ba5 24.Nb3 Bb6 25.Rac1 ½–½. Poschmann,Hans – Popstein,Sheila, email 4AMM–06, 1997.

10.Ne2 Qd7 11.h3 (11.Rf1 Rf8+=) 11...Qe7 (11...f5!?–/+) 12.Ng3+= Bd7 13.Nf5 Qf8 14.Nh6 Nd8 15.d4 (15.Rf1 Ne6+=) 15...Ne6 (15...b5 16.Bd3 Ne6 17.0-0–/+) 16.Be6+= Be6 17.d5 Bd7 18.Nd2 (18.Rf1 c6+=) 18...0-0-0 19.g3 c6 20.Nc4 Bc7 21.Ne3 Kb8 22.Rf1 Be8 23.dc6 Bc6 24.Nd5 Bd5 25.ed5 Rc8 26.Ng4 Qe7 (26...Qf7 27.Rd1=) 27.Nf6 Rcf8 28.Qf5 Ka8 29.Qe6 Qg7 30.0-0-0 (better is 30.c4!?=) 30...Nf4!–/+ 31.Qg4 (31.Rf4 ef4) 31...Qg4 32.hg4 Ne2 33.Kc2 Ng3 34.Rf3 b5 35.g5 Ne4 36.Bc1 h6 37.Ne4 Rf3 38.gh6 Rh3 39.Rf1 Rh2 40.Kb3 Rh4 41.Re1 a5 (41...a5 42.Re2 R8h6 43.Bh6 Rh6–/+) 0–1. Schulz,Hans_Juergen (1785) – Nemec,Zdenek (1875), b2–b4.com, 2004.

10.Nf3 Bb6 11.d4=+.

10.Nf3 Qe7 11.Nh4 Qg7 12.Nf5 Qf8 13.0-0 Bd7 14.Nh6 (14.Bd5 Bb6 15.d4 0-0-0+=) 14...0-0-0 (14...Bb6 15.Kh1+=) 15.Nf7 (15.Nf5 Nf4 16.Qg4 Ne7 17.Ne7 Qe7–/+) 15...Bb6 16.Kh1 Na5 (16...Nf4 17.Qf3=) 17.Bd5= Qg7 (better is 17...Nf4 18.Rf4 ef4 19.Nh8 Qh8+=) 18.Nh8 Rh8 19.g3 (19.d4 Nf4 20.Qf3 Nd5 21.ed5 Nc4 22.de5 Nb2+=) 19...c6+= 20.Bb3 Nb3 21.ab3 Rg8 22.d4 Nf4 23.Qf3 Bg4 24.Qe3 Bh3 25.Rf2 (25.Rf2 Ne6 26.Nd2+=). Noskowicz,Krzysztof – Mostowik,Daniel, corr 1AMM Poland, 1991.

10.Nf3 Qe7 11.Nh4 Qg7 12.Nf5 Qf8 13.0-0 Nd8 (13...Nce7 14.Bb5 Kd8 15.Ne7 Qe7 16.Qf3+=) 14.Nh4 (14.d4 Be6 15.Be6 Ne6=) 14...Qg7 15.Nf5 Qf8 16.Nh4 (16.d4 Be6 17.Be6 Ne6=) ½–½. Skonieczny,Jerzy – Radziejowski,Adam, corr Poland, 1995.

10.Nf3 Nce7 11.0-0 d5 12.ed5 Nd5 (12...c6 13.d4 Qb6 14.Ba3 cd5 15.Be7 dc4 16.Bc5+=) 13.Nh4= Be6?? (better is 13...Rg8=) 14.Ng6+– Bf7 15.Bd3?? (better is 15.Bd5 Bg6 16.Qf3+–) 15...Bb6+= 16.Kh1 Nf4 17.Rf4 (17.Nf4 Exploits the pin 17...Bh5) 17...ef4?? (better is 17...Qd3 18.Ne5 Qb1 (18...Bh5? 19.Nd3 0-0-0 20.Nc1+–) 19.Rb1 Bh5 20.Rf6 0-0-0+/–) 18.Qe2+– (18.Qe2 Kd7 19.Bf5 Kd6 20.Nh8 Qh8 21.Qd3 Ke7 22.Ba3 c5 23.Qb5+–) 1–0. Orlik,Adam – Was,Boguslaw, corr Poland, 1989.

10.Nf3 Nce7 11.d4 c6 12.0-0 Bb6 (12...f5 13.Bd3 Rf8 14.ef5 Bf5 15.Ne5 de5 16.Bf5 Nf5 17.Rf5 Rf5 18.Qf5 ed4 19.Na3+=) 13.Nh4 (13.Kh1!?=) 13...d5+= 14.Rf6 ed4 (14...dc4?! 15.Rg6 Kd7 16.Rg7 ed4 17.cd4+=) 15.Rg6?? (15.Ng6 Ng6 16.Rg6 dc3 17.Kf1 hg6 18.Qh8 Kd7 19.Qh7 Qe7 20.Qe7 Ke7 21.Ba3 Kf6 22.ed5 Bd4 23.Nc3 Bc3=) 15...Kd7?? (15...dc3 16.Kh1 Kd7 17.Rf6 cb2 18.Qg4 Ke8 19.Nf5 Bf5 20.Qg7–+) 16.Rg7 (16.Qg4 Ke8 17.Qh5 dc3 18.Kh1 Ng6 19.Ng6 hg6 20.Qh8 Kd7 21.Qc3 dc4 22.Na3+=) 16...dc3–+ (worse is 16...dc4 17.cd4 Qe8 18.Qh6+/–) 17.Kh1 (17.Kf1 cb2 (17...dc4 18.Nc3 Rf8 19.Nf3+/–) 18.Qg4 Ke8 19.Qh5 Ng6 20.Rg6 Qh4 (20...hg6 21.Qh8 Kd7 22.Qb2 Qh4 23.Qg7 Kd8 24.Qf8 Kc7 25.Bd5 cd5 26.Nc3–+) 21.Rg8 Kd7 22.Rg7 Kd6 23.Qh4 Rf8 24.Ke2 Bg4 25.Kd2 Rf2 26.Ke1 Rf1 27.Bf1 Ba5 28.Kf2 Rf8 29.Ke3 Bb6 30.Kd2 Ba5 31.Kc2 Rf2 32.Qf2 ba1Q 33.Qf8 Ke5 34.Re7 Be6 35.Qh8 Kd6 36.Re6 Ke6 37.ed5 cd5 38.Qa1 Bc7+–) 17...cb2 (17...dc4 18.Nc3 (18.Bc3?! Rg8+/–) 18...Bd4 19.Nf5 Bg7 20.Rd1 Kc7 21.Rd8 Kd8 22.Ng7+–) 18.Qf5 Kd6 19.Qf6?? (19.Qf4 Kc5 20.Qe3 Kc4 21.Qc3 Kb5 22.a4 Ka6 23.Qd3 Ka5 24.Qc3 Ka6 25.Qd3 Ka5 26.Qc3 Ka6=) 19...Be6 20.Qb2 Rg8 (better is 20...dc4!? 21.Nc3 Kc7–+) 21.ed5–/+ Rg7 22.Qg7 Nd5 23.Qg3 Kd7 24.Nc3 Qf6 25.Bd5 cd5 26.Rd1 Bd4 27.Nd5 Bd5 28.Qg4 Kc6 29.Qd4 Qd4 30.Rd4 Ba2 31.Nf5 Rf8 32.Ng3 (32.g4 b5–+) 32...b5 33.h3 (33.Rh4 Rf7–+) 33...a5 34.Rh4 Bb1 35.Ne2 Bg6 36.Nd4 Kb6 37.Rh6 (37.Kg1 a4–+) 37...a4 38.h4 Rf4 (38...Rf4 39.h5 Rh4 40.Kg1 b4–+ (worse is 40...Rh5 41.Rh5 Bh5 42.Kf2–+)) 0–1. Mothes,Rainer – Schirmer,Michael, corr SOK–89–32, 1990.

10.Qh6 Qe7.

11.0-0 Qg4 12.Qg4 Bg4 13.d4 (13.h3 Bb6 14.Kh2 Bd7–/+) 13...0-0-0 (13...f5 14.Be6–/+) 14.Nbd2 ed4 (14...Rde8 15.Bf7 Re7 16.Bd5–/+) 15.cd4=+ Rhe8 16.d5 Nce5 17.Bb5 Rg8 (17...c6 18.Rac1 Bd2 19.Nd2=+) 18.Nc4 (better is 18.Kh1!?–/+) 18…Bf3–+ (19.Rf3 Nf3 20.gf3 Bb4–+) 0–1. Molarius,Reijo – Rissanen,Heikki, corr Finland ch, 1997.

11.Rf1 Bb6=+.

11.Rf1 Qg4 12.Qg4 Bg4 13.d3 f5–/+.

11.h3 Qg7 12.Bc1 A) 12...Rb8 A1) 13.a4 Kd8 (13...Bd7 14.d3 Kd8 15.Bh6 Qe7 16.0-0 Bb6+=; 13...Bb6 14.d3 Na5 15.Bd5 c6 16.Ba2 Kd8=; 13...Qe7 14.Nh4 Kd8 15.d3 Nh4 16.Qh4 h6+=) 14.d3 Nf4 15.Bf4 ef4 16.Qh4 Ne5–/+; A2) 13.d3 b5 (13...Kd8 14.Bh6 Qd7 15.0-0 a6 16.Nh4 b5=) 14.Bd5 Nd4 15.Nd4 ed4 16.Bd2 Kd8+=; B) 12...Bd7 B1) 13.g4 0-0-0 (13...Bb6 14.d3 Na5 15.Bh6 Qe7 16.Nbd2 Nc4+=) 14.d3 Nf4 15.Bf4 ef4 16.Nfd2 f5–/+; B2) 13.d3 0-0-0 14.Bh6 Qe7 15.Bd5 Be6 16.0-0 Rhg8+=; C) 12...Kd8 13.d3 Nf4 14.Bf4 ef4 15.0-0 Ne5 16.Bb3 Qg6–/+.

11.h3 Qg7 12.d3 A) 12...Bd7 A1) 13.g4 0-0-0 (13...Bb6 14.Bc1 Na5 15.Bh6 Qe7 16.Nbd2 Nc4+=) 14.Bc1 Nf4 15.Bf4 ef4 16.Nfd2 f5–/+; A2) 13.Bc1 0-0-0 14.Bh6 Qe7 15.Bd5 Be6 16.0-0 Rhg8+=; B) 12...Rb8 B1) 13.a4 Kd8 (13...Bb6 14.Bc1 Na5 15.Bd5 c6 16.Ba2 Kd8=; 13...Bd7 14.Bc1 Kd8 15.Bh6 Qe7 16.0-0 Bb6+=; 13...a6 14.Bc1 Bb6 15.Bh6 Qe7 16.Nh4 Kd8+/–) 14.g3 Bb6 15.Bc1 Nge7 16.g4 Qg6–/+; B2) 13.g4 b5 14.Bd5 Nce7 15.Bb3 b4 16.c4 Bb6+=; B3) 13.a3 b5 14.Bb3 Kd8 15.Bc1 Nd4 16.Bh6 Qe7–/+; B4) 13.Bb3 b5 (13...Kd8 14.Bc1 Nge7 15.g4 Qg6 16.Qh6 Nd4+=; 13...Bb6 14.Bc1 Na5 15.Bh6 Qe7 16.Nbd2 Nb3+=; 13...Bd7 14.Bc1 Kd8 15.Bh6 Qe7 16.0-0 Bb6+=) 14.Bc1 b4 15.Bh6 Qe7 16.Nh4 bc3+=; B5) 13.Bc1 b5 14.Bd5 Nd4 15.Nd4 ed4 16.Bd2 f5+=; C) 12...Bb6+= C1) 13.Bc1 Na5 14.Bh6 Qd7 15.Bd5 c6 16.Bb3 d5–/+; C2) 13.Rf1 Na5 14.Nbd2 Kd8 15.g3 Ne7 16.g4 Ng6–+; C3) 13.Na3 Na5 (13...Kd8 14.g3 Na5 15.Bc1 Bc5 16.Bb3 Nb3–/+; 13...Bd7 14.Bc1 Bc5 15.Rb1 0-0-0 16.Bh6 Qe7–/+) 14.Rf1 Kd8 15.g3 Qd7 16.Rh1 Bc5–/+; C4) 13.a4 Na5 14.Ba2 Kd8 15.Bc1 Nf4 16.Bf4 ef4–/+; C5) 13.a3 Bd7 (13...Na5 14.Ba2 Bd7 15.Bc1 Bb5 16.c4 Ba4+=) 14.Bc1 Na5 15.Ba2 0-0-0 16.Bh6 Qe7+=; D) 12...Kd8 13.g3 (13.Bc1 Nf4 14.Bf4 ef4 15.Qh4 Ne5 16.Nfd2 Re8–/+) 13...Bb6 (13...Qd7 14.Nbd2 Bb6 15.d4 Re8 16.0-0-0 Re7+=) 14.Bc1 Na5 15.Bh6 Qe7 16.Bd5 c6–/+.

11.h3 Qg7 12.Nh4 Bd7 (12...Kd8!?–/+ A) 13.Rh2 Nf4 (13...Bb6 14.Nf5 Bf5 15.Qf5 h5 16.Qf1 Nf4–+) 14.Qf3 Qg5 15.g3 Nh5 16.Nf5 Bf5–+; B) 13.Ng6 hg6 14.Qf3 f5 15.Bd5 Ne7 16.Bb3 Qh6–/+; C) 13.g3 Nh4 14.Qh4 Qg5 15.Qg5 fg5 16.Bc1 Rf8–/+) 13.Nf5+= Qf8 14.Nh6 (14.d3 0-0-0 15.Bc1 Nf4 16.Bf4 ef4+=) 14...0-0-0 (14...Bb6 15.Nf7 Nf4 16.Nd6 Kd8 17.Nf7 Kc8 18.Qf3–/+) 15.Nf7= Qg7 (15...Nf4 16.Qf3= Bb6=) 16.Nh8 (16.Nd8 Nf4+=) 16...Rh8 (16...Nf4=) 17.g3 Nce7 (17...Rf8 18.Rf1+=) 18.d3 (18.Rf1 Rf8=) 18...b5 (18...Nf4 19.Qf3 (19.gf4? Qg2 20.Qf7 Qh1 21.Kd2 Qh2 22.Kc1 Qf4 23.Nd2 d5 24.ed5 Kd8–+) 19...Nh3 20.Rf1+=) 19.Bb3= Nf4 20.Qf3 (worse is 20.gf4 Qg2 21.Qf7 Qb2 22.Qe7 Qa1–+) 20...Nh3 21.Rf1 (21.Nd2 Ng5 22.Qe2 f5=) 21...Rf8 (21...Qg5 22.Qf6 Qg3 23.Kd2–/+) 22.Nd2 (22.Bc1 Bb6 23.Qg2 Ng5=) 22...Bg4 (22...Qg5 23.Bd1+=) 23.Qe3 Bb6 (23...Qg5 24.Qg5 (24.Qa7 Nc6 25.Nf3 Qh6 26.Be6 Be6 27.Qa6 Kd7–+) 24...Ng5 25.a4+=) 24.d4= ed4 (24...f5 25.a4 ba4 26.Ba4=) 25.cd4 Nc6 26.Qd3 Bd7 (26...f5 A) 27.ef5? Bd4 (27...Nd4?! 28.Be6 Kd8 29.f6 Rf6 30.Bg4 Rf1 31.Kf1 Qg4 32.Qe4 Qe4 33.Ne4–/+) 28.Be6 Kd8–+; B) 27.Be6 Kd8 B1) 28.ef5? Bd4 (worse is 28...Nd4 29.f6 Rf6 30.Bg4 Rf1 31.Kf1 Qg4 32.Qe4 Qe4 33.Ne4–/+) 29.f6 Nf2 30.Rf2 Bf2 31.Kf2 Be6–+; B2) 28.Bf5+=) 27.a4+= Qg5? (better is 27...b4!? 28.Bd5 Na5+=) 28.ab5+/– Nb4 29.Qc3 Bb5 30.Nc4 (better is 30.Be6 Kd8 31.Bh3 (31.Qb4? Qe3 32.Kd1 Bf1–/+) 31...Nd3 32.Kd1 Nb2 33.Qb2 Bf1 34.Bf1 Qg3 35.Ra4+=) 30...Bd4+= 31.Nd6 ½–½. Lopez Paz,Pedro – Casamayor Torriente,Alberto, corr Villa Azul, 1996.

9.cd4 Bb6 10.Nf3 (10.Qh5 g6 11.fg6 Ng6 12.Ne2=+) 10...Na5 (10...d5 11.ed5 Nd5 12.Qe2 Nde7 13.Bb5-+) 11.Bd3-/+ Bd7 (11...d5 12.Qc2-/+) 12.Nbd2 (12.Nc3 Nac6 13.Bb5 g6=+) 12...0-0 13.Nc4 (13.0-0!?-/+) 13...Nc4 14.Bc4 Kh8 (14...d5 15.ed5 Nf5 16.d6 Kh8 17.dc7 Qe7 18.Be2-+) 15.Qd3 (15.Qb3 d5! 16.Bd5 Nd5 17.Qd5 Re8-/+) 15...c6 (15...d5 16.ed5 Bf5 17.Qb3-+) 16.d5? (16.Be6 Be6 17.fe6 Qc8-/+) 16...Ba5 (16...cd5 17.ed5 Re8 18.Kf1 Nf5 19.Bd4-+) 17.Kf1 (17.Kf2 cd5 18.Bd5 Nd5 19.ed5 Qc8-+) 17...b5 (17...cd5!? 18.ed5 Bf5 19.Qb3-+) 18.Bb3 c5 19.Bc2 a6 (19...Re8 20.a4-+) 20.a3 (20.Qe3 c4-+) 20...Rc8 Black prepares the advance c4 21.a4 (21.Qe3-+) 21...c4 22.Qd1 Qc7 (22...b4!? 23.Bd4-+) 23.ab5 c3 (23...ab5 24.Nd4-+) 24.Ba3 g6 (better 24...Bb5!? 25.Kf2 Bb6 26.Kg3 Bc5-/+) 25.fg6 (25.ba6 gf5 26.Qe2 Bb6=+) 25...Ng6 (25...Bb5 26.Ke1 Bb6 27.gh7 Nf5-/+) 26.ba6+= Bb5 27.Bd3?? (27.Ke1 Ba6 28.Nd4 Ne5 29.Bd6 Qb6=) 27...Bd3?? (better 27...c2 28.Qe2 Qc3-+) 28.Qd3+= c2 29.Bc1 Ne5 30.Qe2 Bb6 31.g3 (31.Nh4!?+=) 31...f5=+ 32.Kg2 (32.Ne5 fe4 33.Kg2 Rf2 34.Qf2 Bf2 35.Nc6-/+) 32...fe4-/+ 33.Ne5 Rf2 34.Qf2 Bf2 35.Kf2 (35.Nc6 Qf7 36.Bb2 Kg8 37.Rhc1-+) 35...de5-+ 36.a7? (better 36.Kg2-+) 36...Qf7 37.Ke3 (37.Kg2 Qf3 38.Kh3 Qh1 39.a8Q Qf1 40.Kh4 Ra8 41.Ra8 Kg7 42.Bb2 Qf6 43.Kh5-+) 37...Qf3 38.Kd2 Qd3 (38...Qf2) 39.Ke1-+ Qd1 (39...e3 40.Be3 Qe3 41.Kf1 Qf3 42.Ke1 c1Q 43.Rc1 Rc1 44.Kd2 Qc3 45.Ke2 Rc2 46.Kd1 Qd2) 40.Kf2 Rf8 (40...Qf3 41.Kg1 Rf8 42.Bf4 ef4 43.a8R c1Q 44.Rc1 Ra8 45.Rf1 Qe3 46.Kg2 f3 47.Kh3 Qh6 48.Kg4 Qg6 49.Kf4 Qf6 50.Ke3 Ra3 51.Ke4 Ra4 52.Kd3 Qd4 53.Kc2 Ra2 54.Kb3 Rb2 55.Ka3 Qb4) 41.Kg2 Qf3 42.Kh3 Qh1 43.a8Q Qf1 (worse 43...Ra8 44.Ra8 Kg7 45.Ra7 Kf6 46.Ra6 Ke7 47.Bg5 Kd7 48.Rh6 Qf1 49.Kh4-+) 44.Kh4 Ra8 45.Ra8 Kg7 46.Ra7 (46.Bb2 e3 47.Be5 Kg6 48.Rg8 Kf7 49.Rg7 Kf8-+) 46...Kf8 (better 46...Kg6 47.Ba3 e3-+) 47.Ba3 (47.Bh6 Ke8 48.Rc7 Qf2-+) 47...Ke8 48.Ra8 Kd7 49.Ra7 Kc8 50.Rh7 (50.d6 e3 51.Rh7 e2 52.Rc7 Kd8-+) 50...c1Q (better 50...Qf6 51.Kh3 e3-+) 51.Bc1 Qc1 52.g4 e3 53.Re7 (53.Rh6 Qd2 54.Ra6 e2-+) 53...Qc3 (better 53...Qb2 54.h3-+) 54.d6 e2 55.Rc7 Qc7! 56.dc7 (56.dc7 e1Q Double attack (56...e1Q Decoy)) 56...e1Q 57.Kh5 Qf2 58.h3 e4 59.Kg5 e3 60.h4 (60.Kh6 Qf6 61.Kh5 Qf7 62.Kg5 e2 63.h4 e1Q 64.h5 Qe3 65.Kh4 Qff2) 60...e2 61.h5 (61.Kh5 Qf7 62.Kh6 e1Q 63.h5 Qee6 64.Kg5 Qff6) 61...e1Q 62.h6 (62.Kg6 Qe4 63.Kg7 Qe7 64.Kg6 Qff6) 62...Qf7 (62...Qe7 63.Kg6 Qff7) 63.h7 (63.h7 Qe3 64.Kh4 Qh7). polog (2070) - bleusnake (2375). net-chess.com, 2021.

10.Bc3 d5 11.Bb4 dc4 (better 11...Nb4 12.a3 dc4 13.ab4 Qd6 14.Qh5 g6 15.fg6 Qb4 16.Nd2 Ng6-/+) 12.d5?? (better 12.Bc3=+) 12...Nb4-+ 13.a3?? (13.Qa4 c6 14.Qb4 cd5 15.Nc3-+) 13...Nd3 14.Kf1 c6 15.Nf3 (15.dc6 Qd4 16.Ra2 Qe4-+) 15...cd5 16.ed5 Nd5 17.g3 (17.Qe2 Kf7 18.Ne1 Ne3 19.Qe3-+) 17...Ne3 18.Ke2 Nd1 19.Rd1 Bf5 20.Nc3 Qe7 21.Kf1 Bh3 22.Kg1 Qe3 23.Kh1 Qf3 24.Kg1 Qg2 0-1. polog (2070) – pcmvr, net-chess.com, 2021.

10.Nd2 d5 11.ed5 Nd5 12.Qh5 Kf8 13.Ne2–/+ Qd7 14.a3 Bd2 15.Kd2–/+.

10.Kf2=+.

11.Kd2 Na5 12.Qh5 (12.Bb5 c6 13.Qh5 Kf8 14.Bd3 d5 15.e5–/+; 12.Qa4 c6 13.Bd3 b5 14.Qb4 d5 15.Re1–/+) 12...g6 13.Bb5 c6 14.fg6 Ng6 15.Bd3+=.

11.Kd2 d5 12.ed5 Na5 13.Bb5 Kf8 14.Qf3 a6 15.Be2+=.

11.Kd2 Kf8 12.Qf3 (12.d5 Na5 13.Bd3 c6 14.Qf3 cd5 15.ed5–/+) 12...d5 13.Bd5 Nd5 14.ed5 Nb4 15.Ba3+=.

11.Kd2 g6 12.Rc1 (12.Qf3 gf5 13.Qh5 Kd7 14.Rf1 Na5 15.Bf7–/+; 12.fg6 hg6 13.Qf3 f5 14.Re1 Rf8 15.Kd1+=) 12...d5 13.ed5 Nd5 14.Qe2 Kf8 15.fg6+=.

11.Qd2 d5 12.ed5 Nd5 13.Qe2 Nce7 14.Qh5 Kf8 15.Ba3+=.

12.Rc1 d5 13.ed5 Na7 14.Ne2 Bf5 15.0-0+=.

12.Qd1 g6 13.Rc1 d5 14.ed5 Nd5 15.Qe2+=.

12.Qe2 g6 13.Rc1 gf5 14.Qh5 Kd7 15.ef5+=.

12.Ne2 b5 13.Bb3 (13.Bd3 d5 14.0-0 0-0 15.Rac1=) 13...Bb7 (better is 13...d5!? 14.ed5 Na7= 15.0-0=) 14.Nf4+= Ng8 (14...Bc8 15.Qe2+=) 15.Qe2 (15.Qc3+/–) 15...Nh6 16.Qh5 Ke7 17.Ne6 Qe8 18.Qh4 (18.Ng7?! Qh5 19.Nh5 Na5+/–) 18...Nb4 (better is 18...Qd7+–) 19.Ng7 (19.Nc7 Qc6 20.Na8 Qe4 21.Qe4 Be4+–) 19...Qf8 20.Ne6 Qg8 21.0-0 Nf7 22.d5 Ne5 (22...Ng5 23.Rad1 a5 24.Qh6+–) 23.Be5 de5 24.Nc7 Rc8 (24...Qg5 25.Qg5 fg5 26.Na8 Ra8+–) 25.d6! (25.d6 Kd6 26.Bg8 Kc7 27.Rac1 Nc6 28.Bd5+–) 1–0. Bendig,Frank – Windisch,R, BdF, 1987.

12.Ne2 d5 13.ed5 Nd5 14.0-0+= Nce7 15.Rae1+=.

9.fg6 Ng6 10.Nf3 Na5 11.Be2 Be6 (better 11...0-0!? 12.g3 c6-+) 12.d4-/+ ed4 (12...Bb6 13.Nbd2 Qd7 14.0-0-/+) 13.cd4=+ Bb4 (13...Bb6 14.0-0 0-0 15.Nc3=) 14.Nc3 (better 14.Kf2 d5 15.Nc3 Bc3 16.Bc3=) 14...Nc4?? (better 14...0-0 15.g3 d5=+) 15.Qb5+- Bd7 (15...c6 16.Qb4 Qb6 17.Ba3 Qb4 18.Bb4+-) 16.Qb4 Nb2 (16...Ne3 17.Kf2 (17.Qb7?! Rb8 18.Qa7 Rb2=) 17...a5 18.Qa3+- (18.Qb7?! Rb8 19.Qa6 Ng4 20.Kg3 Rb2+-)) 17.Qb2 0-0 18.0-0 Nf4 19.Bc4 Kh8 20.Nh4 Ne6 21.Nd5 (21.Nf5!? Rb8+-) 21...c6 22.Nf5 (better 22.Nf6 Rf6 23.d5+-) 22...cd5 23.ed5 Ng7 (23...Ng5 24.Nd6 b5+-) 24.Nd6 b6 (24...Qe7 25.Nb7 Rab8 26.Rae1+-) 25.Ne4 (25.Qb4!? f5+-) 25...Nf5 26.d6 (better 26.Rae1+-) 26...Ne3+/- 27.Rfc1 (27.Qb3 Nf1 28.Rf1 Rc8+/-) 27...Bc6 (better 27...Nc4!? 28.Rc4 Bf5+/-) 28.Bd3+- Qe8? (better 28...Qd7+-) 29.Qb1?? (better 29.Re1 Ng2 30.Kg2 Qg6 31.Kf1+-) 29...Rc8+= 30.Re1 (30.d5 Bd5 31.Rc8 Qc8+=) 30...Ng2 31.Kg2 Qd7 32.Qb4?? (better 32.Kf2 Qf5 33.Ke2+=) 32...Qg4-+ 33.Kf2 Qf4 34.Ke2 Be4 35.Be4 Qe4 36.Kd2 (36.Kf2 Qf5 37.Kg2 Rg8 38.Kh1 Qf3) 36...Rc2 37.Kd1 Qd3 38.Qd2 Qd2 0-1. ctrotter (2580) - bleusnake (2375), net-chess.com, 2021.

9.fg6 Ng6 10.Nf3 Na5 11.Bf1 Qe7 12.Nh4 Qf7 13.d4 Bb6 14.Nf5 d5 15.Nd2 Nf4 16.Bb5 Nc6–/+.

8.Qe2 A) 8...Bc5 9.Nh3 (9.Qf3 d5 10.ed5 Nb4 11.Qb3 Bf5 12.d3 Qd6 13.Nc3–+) 9...Nd4 10.Bd4 Bd4 11.c3 Bb6 12.Rf1 gf5 13.Qh5–/+; B) 8...a6 9.Qf3 (9.fg6 hg6 10.Nf3 Bg4 11.Qd3 Na5 12.Ba3 Nc4 13.Bb4–+) 9...gf5 10.Qh5 Kd7 11.ef5 d5 12.Bb3 Qe8 13.Qf3–/+; C) 8...d5 9.ed5 (9.a3 Bc5 10.ed5 Nd5 11.Qf3 Nb6 12.Bb5 Bf5 13.Bc6–+) 9...Nd5 10.Qe4 Nce7 11.fg6 Bf5 12.Qf3 hg6 13.Qb3–+.

8.Qf3 A) 8...gf5 9.Qh5 (9.a3 Bc5 10.Qh5 Kd7 11.ef5 d5 12.Bb3 Qe8 13.Qf3–/+) 9...Kd7 10.ef5 d5 11.Bb3 Qe8 12.Qf3 Kd8 13.Ne2–/+; B) 8...Na5 9.Bd3 (9.Be2 gf5 10.Qh5 Kf8 11.c3 Bc5 12.d4 Bb6 13.Qh6–/+) 9...Nec6 10.Ne2 Bc5 11.Nbc3 Nb4 12.Na4 a6 13.a3–/+; C) 8...Bc5 9.a3 (9.fg6 Ng6 10.Ne2 f5 11.d4 ed4 12.ef5 Nce5 13.Bf7–+) 9...gf5 10.Qh5 Kd7 11.ef5 d5 12.Bb3 Nd4 13.Bd4–+.

8.Qh4 Bc5 9.Qf6 (9.g4 gf5 10.gf5 d5 11.ed5 Nb4 12.Qh5 Kd7 13.Na3–/+) 9...Rf8 10.Qh4 gf5 11.Qh7 Qd7 12.Nc3 Nd4 13.Rc1+=.

8.Qh4 gf5 9.Qh5 (9.a3 Bc5 10.Qh5 Kd7 11.ef5 d5 12.Bb3 Nd4 13.Bd4–+) 9...Kd7 10.ef5 d5 11.Bb3 Qe8 12.Qf3 Kd8 13.Ne2–/+.

8.Qh6 A) 8...gf5 9.Qh5 (9.a3 Bc5 10.Qh5 Kd7 11.ef5 d5 12.Bb3 Nd4 13.Bd4–+) 9...Kd7 10.ef5 d5 11.Bb3 Qe8 12.Qf3 Kd8 13.Ne2–/+; B) 8...Na5 9.Bd3 (9.Be2 gf5 10.c3 Bc5 11.d4 Bb6 12.Qh5 Kf8 13.Qh6–/+) 9...Bc5 10.Nf3 Nac6 11.Qg7 Rg8 12.Qh7 Nb4 13.fg6–/+; C) 8...d5 9.Bb5 (9.Bd5 Nd5 10.Qg7 Rf8 11.fg6 Qe7 12.Qe7 Nde7 13.gh7–+) 9...de4 10.fg6 Ng6 11.a3 Bc5 12.Nc3 f5 13.g4–+.

9.a3 Ba5 (--> 7.a3 Ba5 8.Qh5 g6 9.fg6 Ng6).

9.c3 Ba5 10.Ne2 Qe7 (10...Bb6 11.Rf1–/+) 11.Ng3 Kd8 (11...Bb6 12.Nf5 Bf5 13.ef5+/–) 12.Nf5 Bf5 13.Qf5 Rf8 (13...Bb6 14.Rf1+=) 14.g3 (14.0-0 Bb6 15.Kh1 Nh4=) 14...Qg7 (14...Bb6 15.Rf1+=) 15.Na3 (15.Rf1!?=) 15...Nge7+= 16.Qh5 (16.Qe6 f5 17.ef5 Rf6–+ (17...Nf5?! 18.Rf1 Rf6 19.Qd5–/+; 17...Rf5?! 18.Rf1 Rf1 19.Bf1–/+)) 16...f5–/+ 17.Rf1 fe4 18.Rf8 Qf8 19.Qh7 Bb6 (19...d5 20.Bb5–/+) 20.0-0-0 (20.Qe4 Qf2 21.Kd1 Qh2 22.Qh4 Qh4 23.gh4–/+) 20...Kd7 (better is 20...d5!? 21.Rf1 Qe8–/+) 21.Qe4= Qf5 (21...Kc8 22.h4=) 22.Qf5 Nf5 23.Rf1 Nfe7 24.Be2 (24.h4 d5 25.Bb5 Rg8+=) 24...Rh8 (24...Rg8 25.Nc4=) 25.Bg4 (25.h4 Ke6=) 25...Ke8 26.h3 Rg8 (26...d5 27.Be6=) 27.Nc2 Rg5 (27...Nd5 28.Be6 Rg3 29.Bd5 Rh3 30.d4+/–) 28.c4 (28.d3 Nd5+=) 28...Bc5 (28...d5 29.cd5 Nd5 30.Bf3=) 29.d3 d5 30.cd5 Nd5 31.Rf5 Rf5 32.Bf5 Nd4 (32...Bd4 33.Be4 Bb2 34.Kb2+=) 33.Be4 c6 34.Nd4 ed4 35.Bd5 cd5 36.g4 Kf7 37.Kd1 (37.h4 Kg7+/–) 37...Kg6 (37...b5 38.h4+/–) 38.Bc1 (38.h4 Kg7+/–) 38...Be7 39.Ke2 b5 40.Bf4 a5 (40...a6 41.Be5+/–) 41.Be5 Bf6? (better is 41...Bc5+/–) 42.Bf6 +–. Preuss – Hlousek, corr 3GMM–34, 1996.

9.c3 Ba5 10.Nf3 Bb6+=.

9.c3 Ba5 10.Nf3 Qd7 11.h3 Qg7 12.0-0? (better 12.d3!?=+) 12...Ke7 (better 12...Kd8 13.Ne1 Nf4-+) 13.Rf2? (better 13.Nh4 Nf4 14.Rf4 ef4 15.Nf5 Bf5 16.ef5-+) 13...Nf4 14.Qh4 Nh3 15.Kf1 Nf2 16.Kf2 Bg4 17.Nh2 (17.d4 Kd7-+) 17...Bb6 18.Kf1 h5 19.Na3 (19.Bd5 Qg5 20.Qg5 fg5-+) 19...Qg5 20.Qg5 fg5 21.Ng4 Raf8 22.Nf2 (22.Ke2 hg4 23.Rf1-+) 22...Rf2 23.Ke1 Rg2 24.Bf1 (24.Nc2 h4 25.Bf1 h3-+) 24...Rg1 25.Nc4 Rf8 26.Ke2 Rf2 27.Kd3 Rgf1 28.Rf1 Rf1 29.Ne3 (29.Ke2 Rf2 30.Ke1-+) 29...Be3 30.Ke3 h4 31.Ke2 Rb1 32.Ba3 h3 (32...h3 33.Ke3 h2 34.d4 h1Q 35.Bc1 Qc1 36.Kf3 Qf4 37.Ke2 Qe4 38.Kf2 Rb2 39.Kg3 Qg2) 0-1. ctrotter (2580) – pcmvr, net-chess.com, 2021.

9.c3 Bc5 10.Nf3–/+.

9.Ne2 Na5 10.Bd3=+.

9.Ne2 Bd7 10.0-0 Na5 11.Bb3 Qe7 12.c3 (12.d4 ed4 13.Bd4 A) worse 13...Qe4 14.Rf4 Qe7 15.Nbc3 (worse 15.Rf6 0-0-0-/+) 15...Bc3 16.Nc3= (worse 16.Bc3 Nb3 17.ab3 0-0-/+); B) 13...Nb3 14.ab3 Qe4-/+) 12...Bc5-/+ 13.d4 Bb6 14.Nd2 0-0-0 15.Kh1 Kb8 16.Rf2 (16.Bc2!?-/+) 16...ed4-+ 17.cd4 Nb3 18.ab3 f5! 19.ef5 (19.Nf4 Nf4 (19...fe4?! 20.Nd5 Qe8 21.Nf6-/+) 20.Rf4 Rhf8-+) 19...Qe3-+ 20.fg6? (better 20.Raf1 Qd2 21.Ng3-+) 20...Qf2 (20...Qd2?! 21.Bc3 Qe3 22.Qf3 Qf3 23.Rf3 hg6 24.Nf4-/+) 21.Ne4 Qe3 22.g7 (22.Nf6 Be8-+) 22...Rhg8 (22...Qe4?! 23.gh8Q Rh8 24.Rf1-+) 23.Nf6 (23.Qf3 Qf3 24.gf3 Rg7-+) 23...Rg7 24.Rf1 (24.Qf3 Qf3 25.gf3-+) 24...Bg4! 25.Qh4 (25.Ng4 Qg5 Double attack (25...Qg5 Decoy; 25...Qe2 Interception)) 25…Be2 (25...Be2 26.Nd5 Qg5 27.Qg5 Rg5-+) 0-1. mgilbert (2100) - sasikumar (2775), net-chess.com, 2021.

9.Nf3 Na5+= 10.Bf1 Be6 11.c3 Bc5 12.d4 Bb6 13.Nbd2–/+.

9.Nf3 Bc5+=.

9.Nf3 Bd7 10.Nc3 Bc3!? 11.Bc3 Qe7 =.

9.Nf3 Kf8 10.a3= Ba5 (10...Bc5 11.Nh4 Kg7 12.Nf5 Bf5 13.Qf5=) 11.Qh6 (11.Nh4 Kg7=) 11...Ke8 12.Nh4 Nh4 13.Qh4 Qe7 14.0-0 Attacks the backward pawn on f6 14...Rf8 15.Kh1 (15.Qh5 Kd8=) 15...Be6 (15...Qg7!?+=) 16.Be6= Qe6 17.Qh7 Qf7 18.Qh6 Ke7 19.Nc3 (19.Qe3 Rh8=) 19...Bc3 20.Bc3 Rh8 21.Qe3 Qh5 Threatening mate: Qxh2 22.h3 Qg6 23.Rf5 Kd7 24.Raf1 Raf8 25.Qf2 The pressure on the backward pawn f6 grows 25...Rhg8 The backward pawn on g2 becomes a target 26.d3 Kc8 27.Bb2 Rf7 28.a4 a6 29.Rf3 Nd8 (29...Ne7 30.c4=) 30.Bc1 Ne6 31.Be3 Kd7 (31...Nd4 32.Bd4 ed4 33.Kh2+=) 32.Rb1 Kc8 33.c4 c5 (33...Nc5!? 34.Bc5 dc5=) 34.Rb6+= Rd8 35.Kg1 Nd4 (35...Ng5 36.Bg5 Qg5 37.Rf5 Qc1 38.Qf1+=) 36.Bd4+/– ed4 37.Rf4 Kc7 38.Qb2 Rb8 39.Rf3 Qg5 40.g4 Qe5 (40...Rh7 41.Kf1+=) 41.Kg2 Rg7 (41...Rh7 42.Rf5 Qe7 43.Rd5+/–) 42.Rf5+/– Qe7 43.Rd5 Rf7? (better is 43...Rg5!?+/–) 44.Rdd6 (44.Rdd6 Qf8 45.Re6+/–; 44.Rbd6!? b6 45.a5 Qd6 46.Rd6 Kd6+–) 1–0. Harabor,M – Lozano,ArcadioMata, corr APCT, 1991.

9.Qh6 Nd4 10.c3? Nc2 11.Kd1 Na1 12.cb4 d5 13.ed5–/+.

9.Qh6 Nd4 10.c3? Nc2 11.Kd1 Na1 12.Qg7? Bg4–+ 13.Nf3 Bf3 14.gf3 Qe7 (14...d5 15.Bd5 Qe7 16.Qe7 Be7 17.Ba1–+) 15.Qe7 Ne7 16.cb4 a5 17.b5 (better is 17.Ba1 ab4 18.Rg1=) 17...0-0-0 (17...d5 18.ed5 0-0-0+=) 18.Be6+/– Kb8 19.Ba1 Ng6 (19...d5 20.Nc3 d4 21.Nd5+=) 20.Rg1 Nf4 21.Bc4 (21.Bb3 d5+/–) 21...Ka7 (21...d5 22.ed5 Nd5 23.Na3+=) 22.a4 (22.Nc3!?+/–) 22...Kb6 (22...c6 23.bc6 bc6 24.Bc3+/–) 23.Bc3 (23.Nc3 c6+/–) 23...Kc5 (23...d5 24.ed5 Nd5 25.Bd5 Rd5 26.Na3+=) 24.d3 (24.Bb3 Ra8+/–) 24...Kb6 (24...d5 25.ed5 Kb6 26.Nd2+/–) 25.Rg7 (25.Bd2 d5 26.Be3 c5 27.bc6 Kc6 28.Bb5 Kd6+–) 25...c6 26.Na3 (better is 26.bc6!? bc6 27.Bd2+/–) 26...d5= 27.ed5 cd5 28.Rf7?? (28.Bd2 Kc5 29.Bb3 Nd3 30.Rb7+–) 28...dc4–/+ 29.Nc4 Kc5 (better is 29...Ka7–+) 30.Rc7+= Kd5 31.Rb7 Rb8 (31...Nd3 32.Na5 Nc5–+) 32.Rd7= Ke6 33.Rd6 Ke7 34.Ba5 Ra8 35.Rc6 Rhc8? (35...Nd3 36.Kd2 Nf4 37.Bb4 Kf7 38.Nd6 Kg6 39.a5–/+) 36.Bb4 Kd8 37.Rd6 Kc7 38.Nb6 (38.Rf6 Nd3 39.Bd6 Kd8 40.Rf8 Kd7 41.Nb6 Kd6 42.Nc8 Ke6+–) 38...Rd8 39.Na8 Ra8 40.b6 (40.a5!? h6+–) 40...Kb7 41.a5 Rg8 (41...Kc8 42.Bd2 Nh5 43.Rc6 Kb8 44.Re6+–) 42.Kd2 (better is 42.Rd7 Kc6 43.Rh7 Nd3 44.Bc3+–) 42...Rg2 43.Kc3 Rh2 44.Kc4 (44.Rd7 Ka6+–) 44...Rh3?? (44...Ka6+–) 45.Kb5 Kc8 46.a6 Nd3 47.Rd3 h5 48.b7 Kb8 49.Rd8 Kc7 50.b8Q 1–0. NN – SuperForte5, 1993.

9.Qh6 Nd4 10.c3 Nc2 11.Kd1 Na1 12.Qg7? Bg4 13.Nf3 Bf3 14.gf3 Qe7 15.Qe7=+ Ne7 16.cb4= a5 17.b5 0-0-0 18.Be6+/– Kb8 19.Ba1 Ng6 20.Rg1 Nf4 21.Bc4 Ka7 22.a4 Kb6 23.Bc3 Kc5 24.d3 Kb6 25.Rg7 c6 26.Na3 d5 27.ed5 cd5 28.Rf7?? dc4–/+ 29.Nc4 Kc5 30.Rc7 Kd5 31.Rb7 Rb8 32.Rd7 Ke6 33.Rd6 Ke7 34.Ba5 Ra8 35.Rc6 Rhc8? 36.Bb4+– Kd8 37.Rd6 Kc7 38.Nb6 Rd8 39.Na8 Ra8 40.b6 Kb7 41.a5 Rg8 42.Kd2 Rg2 43.Kc3 Rh2 44.Kc4 Rh3 45.Kb5 Kc8 46.a6 Nd3 47.Rd3 h5 48.b7 Kc7 49.Ba5 Kb8 50.Kb6 Rh1 51.a7# 1–0. NN – SuperForte5, Aachen, 1993.

9.Qh6 Nd4 10.Bd4 ed4 11.Ne2 Ne5–/+.

9.Qh6 f5–/+.

10.Ne2 Rb8 11.Rf1-/+.

10.Ne2 Qe7 11.Nbc3=+ Na5 12.Ba2 c6 (12...Be6 13.Be6 Qe6 14.Rf1=+) 13.Na4= Bd7 (13...Be6!?=) 14.Nc5+= dc5 15.Bc3 b6 16.Ba5 ba5 17.Rb1 0-0-0 (17...c4 18.Qf3+=) 18.Qf3 Be6 19.Be6 Qe6 20.Qc3 Rd7 21.0-0 Rb7 (21...Qd6!?+/-) 22.Qa5+- Qc4 (22...Rd7 23.Ng3 Qd6 24.Rf3+-) 23.d3 Qc2 (23...Qf7+-) 24.Qa6 (24.Qa6 Kd8 25.Rb7 Qa4 26.Qa4 Rf8 27.Qc6 Rf7 28.Qd6 Rd7 29.Qd7) 1-0. marekt (2825) - ctrotter (2580), net-chess.com, 2021.

10.Nf3 Na5 11.Ba2 Qe7 (11...Qd7 12.Nc3=+) 12.Nh4= Qf8 13.Rf1 Ke7 (13...Kd8!?=+) 14.Nc3 c6 (14...Kd8 15.Nd5 Ne7 16.Rf6+/-) 15.Na4 (15.Qg6 hg6 16.Ng6 Ke8 17.Nf8 Rf8 18.Na4+=) 15...b6? (15...Nh4 16.Qh4 b6 17.Rf3=) 16.Nc5 (better 16.Qh7! Rh7 17.Ng6 Ke8 18.Nf8 Kf8 19.Nc5 bc5 20.h3+=) 16...bc5 (16...Nh4 17.Qh4 bc5 18.Bc1=) 17.Nf5 Kd7 18.Bc3 Ba6? (better 18...Nb7!?+=) 19.Ba5+- Bf1 20.Kf1 Qc8 (20...Rb8 21.Qg4 Nf4 22.g3+-) 21.Qh6 Qf8 22.Rb1 Qh6 (22...Rd8 23.Qh3 d5 24.Rb7 Ke8 25.Bd8 a5 26.Ba5 Qe7 27.Ne7 Ne7 28.Qe6 Kf8 29.Qe7 Kg8 30.Qf7) 23.Rb7 (23.Nh6?! Rab8+/-) 23...Ke8 24.Nd6 Kf8 25.Rf7 Kg8 26.Ra7 Kf8 27.Ra8 (27.Ra8 Ke7 28.Nf5 Kd7 29.Ra7 Kc8 30.Nh6+-) 1-0. pcmvr - bleusnake (2375), net-chess.com, 2021.

10.Nf3 Na5 11.Nh4 Nc4 (11...Kd7 12.Ng6 hg6 13.Qg6 Nc4 14.Qf7 Qe7 15.Qc4-/+) 12.Ng6= Kd7 (better 12...hg6 13.Qh8 Kd7 14.Qd8 Kd8=) 13.Nh8+- Nb2 14.Qh7 Kc6 15.Nc3 Be6 16.Ng6 d5 (16...Nc4+-) 17.Rf1 (17.Nd5?! Bd5 18.ed5 Qd5+/-) 17...d4 18.Nd5! Bd5 19.ed5 Qd5 20.Rf6 Kb5 21.Ne7 Qg2 (21...Be7 22.Qe7 Qc5 23.Qe6+-) 22.Rb1 Bb4 (22...Ka5 23.Rb2 Re8 24.Rf2 Qh1 25.Rf1+-) 23.ab4 (23.Rb2 Qd2 24.Kf1 Qc1 25.Kf2 Qe3 (worse 25...Qb2 26.ab4 Ka4 27.Qe4+/-) 26.Kg2 Qg5 27.Kh3 Qf6 28.Qd3 Kc5 29.ab4 Kd6 30.Nf5 Kd7=) 23...d3 24.cd3 (24.cd3 Rh8 25.Qe4 (25.Qh8?! Nd3 26.Kd1 Qg4 27.Rf3 Qf3 28.Kc2 Qe4 29.Qe8 c6=) 25...Qe4 26.de4 Nd3 27.Ke2 Nf4 28.Kf3 Rh3 29.Kg4 Rh2 30.d4+-) 1-0. marekt (2825) - mgilbert (2100), net-chess.com, 2021.

10.Nf3 Qe7 11.Nh4= Qg7 12.Nf5 Bf5 13.ef5+/– 0-0-0 14.fg6 hg6 15.Qg4 f5 16.Be6 Kb8 17.Bf5 Qf6? (17...Qf8 18.Bg6 Qf2 19.Kd1 Rdg8–/+) 18.Qg6+– Qh4 (18...Qf8 19.Rf1+–) 19.g3 Qc4 20.Nc3 Rdg8 21.Qe6 (21.Qe6 Qe6 22.Be6 Rg3 23.Ne4 Rg1 24.Rg1 Bg1 25.h3+–) 1–0. marekt – craig4000, ChessWorld.net, 2012.

10.Nf3 Qe7 11.Nh4 Qg7 12.Nf5 Qf8 13.Nc3 Bd7 14.Nd5 0-0-0 15.c3 (15.Rf1 Na5 16.Bd3 c6+=) 15...Bf5 (15...Na5!? 16.Bf1 c6–/+) 16.Qf5= Kb8 ½–½. Brinkmann,Wilhelm – Bendig,Frank, corr, 1985.

10.Nf3 Qe7 11.Nh4 Qg7 12.Nf5 Qf8 13.Nc3 Bd7 14.Nd5 0-0-0 15.c3 (15.Rf1 Na5 16.Be2 c6 17.Nde3 Nf4 18.Qf3 Rg8 19.Bc3 Bf5–/+) 15...Bf5 (15...Na5!? 16.Be2 c6–/+ 17.Nde3 Nf4 18.Qf3 d5 19.ed5 Nb3–/+; 15...Nge7 16.Nfe7 Ne7 17.d4 Nd5 18.Bd5 Bb6 19.0-0 c6+=; 15...Nce7 16.Nfe7 Ne7 17.d4 Nd5 18.Bd5 c6 19.Bb3 Bb6+=; 15...Nf4 16.Nf4 ef4 17.Rf1 Qe8 18.Qe2 d5 19.ed5 Ne5–+) 16.Qf5= Kb8 17.Rf1 (worse is 17.Nf6 Nh4 18.Nd7 Rd7 19.Qd7 Ng2 20.Kd1 Qf3 21.Kc2 Qe4 22.Bd3 Ne3 23.de3 Qg2 24.Kb3 Na5 25.Ka4 b6–+ (25...Qb2?! 26.Qb5 Qb5 27.Bb5+=); 17.Rb1 Nce7 18.Qf6 Nd5 19.Qf8 Rhf8+=) 17...Qh6 18.0-0-0 (18.Qf6? Rhf8 (18...Qh2?! 19.Qg5–/+) 19.Qe6 Qh4 20.Kd1 Qe4–+; worse is 18.Nf6 Nf4 19.0-0-0 Ka8+=; 18.Qh3 Qh3 19.gh3 a6=) 18...Qh2 (18...Na5 19.Ba2 Rdf8=) 19.g4 (19.d4 Qh6 20.Kb1 Bb6=) 19...Nce7 (19...Na5!? 20.Rh1 Qg3–/+) 20.Ne7+= (worse is 20.Qf6 Nd5 21.Bd5 Nf4–/+) 20...Ne7 21.Qf6 Nc6 22.Rf3? (22.d4 Bb6=) 22...Qg2 (22...d5 23.Bd5 Rhf8 24.Bf7–+) 23.Rdf1 (23.d4!? d5 24.Bd5–+ (24.ed5? Rhf8 25.dc6 Rf6 26.Rf6 Qg4–+)) 23...Qg4–/+ 24.d4 Bb6 (24...Qe4 25.Qh8 d5 26.dc5 Rh8 27.Rf8 Nd8 28.Rh8+–) 25.Be6 (25.Bd5 h5–+) 25...Qg2 (25...Qe4!? 26.Qh8 Rh8 27.Rf8 Nd8 28.Rh8–+) 26.Bd5–/+ ed4 27.Bc6 bc6 28.cd4 Kb7 29.e5 de5 30.de5 Rd2 31.e6 Rf8 32.Qg7 Rf3 33.Qg2 Rg2 34.Rf3 Re2 35.Rh3 Re6 36.Rh7 Rh6! 37.Rf7 Rh3 38.Kc2 Bc5 39.a4 Bd6 40.Bc3 a5! 41.Ba5 Ra3 42.Bc3 Ra4 43.Kb3 Rf4 44.Rf4 Bf4 45.Kc4 ½–½. Brinkmann,Wilhelm – Koerner,S, BdF, 1985.

11.Nc3 Nce7 12.Rf1 Kd8 (12...a6 13.Nh4 (13.d3 Qg4 14.Qg4 Bg4 15.h3 Bd7 16.Bc1–/+) 13...Qg4 14.Qg4 Bg4 15.Ng6 hg6 16.h3=) 13.Nh4 (13.Kd1 a6 14.Rb1 b5 15.Bf7 Rf8 16.Bb3–/+; 13.Qh6 Qg4 14.g3 a6 15.Qg7 Rf8 16.Bf7+=) 13...Rf8 14.Rb1 (14.Qh6 Qg4 15.g3 Bd4 16.Ng6–/+) 14...a6 15.Bb3 (15.Qh6 Qg4 16.Ng6 Ng6 17.Qh7 Nf4–/+) 15...Qg4 16.Qg4 Bg4 (16...Bg4 17.Ng6 hg6–/+).

11.Nc3 Nce7 12.h3 A) 12...Kd8 13.g4 a6 14.Qh6 b5 15.Bb3 Ng8 16.Bg8+=; B) 12...a6 13.Rb1 (13.a4 Kd8 14.g4 c6 15.Nh4 Rf8 16.Qh6–/+; 13.Bb3 b5 14.Nh4 Kd8 15.Nd5 Rf8 16.Ne7+=; 13.g4 Kd8 14.Rf1 Qe8 15.Qh6 b5 16.Bb3+=; 13.g3 b5 14.Bb3 c6 15.Ne2 Qc7 16.d4+=; 13.Rf1 Kd8 14.Qh6 b5 15.Bb3 Ng8 16.Bg8+=; 13.Nh4 Kd8 14.Rf1 Rf8 15.Qh6 b5 16.Bb3+=; 13.Rd1 Kd8 14.Qh6 Ng8 15.Bg8 Rg8 16.Nd5+=) 13...Kd8 14.g4 Qc6 15.Bb3 Bd4 16.Nd4+=; C) 12...Rb8 13.g4 (13.Nh4 Kd8 14.Rf1 Rf8 15.Rb1 b5 16.Be2–/+; 13.Bb3 Kd8 14.g4 b5 15.Rf1 a5 16.Qh6+=; 13.Rb1 b5 14.Bc1 a6 15.g4 c6 16.Bb3–/+; 13.Rf1 b5 14.Bb3 Kd8 15.g4 a5 16.Qh6+=; 13.Bc1 b5 14.Rb1 c6 15.g4 Qc7 16.Bb3–/+) 13...b5 14.Bb3 c6 15.Ne2 a5 16.a4+=.

11.Nc3 Rf8 12.Na4 (12.Rb1 Na5 13.Bb5 c6–/+) 12...Qg4 (12...Bd4 13.c3 Bb6 14.Rf1=) 13.Qg4= Bg4 14.Nc5 dc5 15.Bb5 Bd7 16.0-0 (16.Rb1 a6 17.Bc4 b5–/+) 16...a6 17.Bc4 (17.Bc6 Bc6 18.d3 f5+=) 17...b5 (17...Nd4 18.Bd5 0-0-0 19.Bd4 cd4 20.Rae1–/+) 18.Ba2 (18.Bd5 Nf4 19.Bc6 Bc6–/+) 18...Rd8 (18...c4 19.d3–/+) 19.d3 (19.a4 ba4 20.Bd5 Nb4–+) 19...Nf4 (19...Nd4 20.Bb3–/+) 20.Kh1 (20.g3 Ne2 21.Kf2 Ned4–/+) 20...Ne6 (20...Nd4 21.Nd4 cd4 22.Bd4 Nd3 23.Be3+=) 21.c3 (21.a4 Ned4 22.ab5 ab5 23.Nd4 cd4=) 21...Bc8 (21...Nf4 22.d4–/+) 22.Rad1 Nf4 23.Bc1 Ne2 24.Bb2 Bg4 (24...b4 25.ab4 cb4 26.cb4 Nb4 27.Bc4–/+) 25.Rd2 (25.Bd5 Ne7 26.Bb7 Rd6–/+) 25...Nf4–/+ 26.d4 (26.h3 Bf3 27.Rf3 b4–/+) 26...cd4 (26...Bf3 27.Rf3 cd4 28.cd4+=) 27.cd4 ed4 28.Nd4 Ne2 29.Nb3 Rd2 30.Nd2 Ne5 31.Bd5 c5 (31...Ke7 32.Nf3 Nd3 33.Ba1–/+) 32.Bb7 Ke7 33.Ba6 Rb8 34.Be5 fe5 35.a4 (35.Nf3 Rb6 36.Ne5 Be6 37.Bb5 Rb5–+) 35...ba4–+ 36.Nc4 Ke6 37.Ne3 Nc3?? (37...Bh5 38.g4 Nc3 39.Bc4 Kd6 40.Rf6 Kd7 41.gh5 Ne4+=) 38.Bc4+= Kd6 39.Ng4 Rb4 (39...a3 40.Rf6 Kc7 41.Ne5 Rb1 42.Bf1–+) 40.Ne3 (40.Rf6!? Ke7 41.Re6 Kd8 42.Bd3+=) 40...a3 41.Kg1 a2 (41...Ne4 42.Rd1 Kc7 43.Nd5 Kb8 44.Nb4 cb4 45.Rb1+–) 42.h3 Rb1 ½–½. Kern,Michael (1660) – Hoefer,Hans_Peter (2005), IECC, 2001.

11.Nc3 Qg7 12.Nd5 0-0 (12...Kd8 13.Rf1=+) 13.Rf1 (13.Nc7 Kh8 14.Nd5 Nce7 15.Ne7 Ne7=) 13...Kh8=+ 14.0-0-0 (14.Bc1 f5-/+) 14...Be6 (14...Na5 15.Ba2 c6 16.Ne3-/+) 15.Nh4 Attacking the backward pawn on f6 15...Nh4 16.Qh4 Ne7 17.g3 Ng6 18.Qh5 a5 19.Be2 (19.Bb3 a4 20.Nc7 A) worse 20...ab3 21.Ne6 Qg8 22.Nf8 bc2 23.Ng6 (worse 23.Kc2 Qc4 24.Kb1 Qd3 25.Kc1 Qc4 26.Kb1 Qd3 27.Kc1 Qc4 28.Kb1=) 23...Qg6 24.Qg6 cd1R 25.Kd1 hg6 26.Rf6+=; B) 20...Bb3 21.Na8 Bc4=+) 19...a4 20.Bg4 Bg4 21.Qg4 c6 22.Ne3 b5 23.h4 (23.Nf5 Qf7=+) 23...b4 24.ab4 a3 25.Ba1 (25.bc5?? ab2 26.Kb1 Qb7 27.c3 Qb3 28.Qg6 Ra1) 25...Bb4 26.c3 Ba5 27.h5 Ne7 28.Qe6 Bc7 29.h6 Qf7 30.Qf7 Rf7 31.Rf3 (31.d4 Ra4-/+) 31...Ng8 32.Rh1 a2 33.Kc2 Ra4 34.Kb3 Ra6 (34...Re4?! 35.d3 Re3 36.Re3=) 35.Kc2 Rf8 36.c4 Rb8 37.g4 Rab6 38.Rff1 Rb1 (38...Ra8 39.Bc3-/+) 39.Nf5 (39.Rb1!? ab1R 40.Rb1 Rb1 41.Kb1 Nh6 42.d4-/+) 39...R1b4 40.d3 d5! 41.ed5 (41.cd5 cd5 Combination; 41.ed5 cd5 Combination) 41...cd5 42.cd5 Rg4 43.Rhg1 Rg6 44.d6 Bb6 45.Rg6 hg6 46.Ne7 g5 47.Ng8 Kg8 (47...Rg8?! 48.Rf6 Bd4 49.Bd4 ed4 50.Kb2=) 48.Rf6 Bd4 49.d7? (49.Rf1 Rd8 50.Bd4 ed4 51.Kb3 Rd6 52.Ka2-+) 49...Kh7?? (49...Ba1 50.Rc6 Bd4 51.Rc8 Kh7 52.Rb8-+) 50.Re6? (50.Bd4 ed4 51.Ra6 Rd8-/+) 50...Rd8 (better 50...Ba1 51.Re8 Bd4 52.Rb8 a1Q-+ (52...Kh6 53.Rh8 Kg6 54.d8Q a1N 55.Kd1 Ba7 56.Qf8 g4 57.Rh6 Kg5 58.Qf6)) 51.Bd4-/+ ed4 52.Re7 (better 52.Kb2!? Rd7 53.Ka2-+) 52...Kh6-+ 53.Kb2 Kg6 ½-½. pcmvr - marekt (2825), net-chess.com, 2021.

11.Rf1+=.

11.h3 Kd8 12.g3 Na5 13.Ba2 (13.Bd3 Rg8–/+) 13...Bb6 (better is 13...Qa4!? 14.d4 ed4–+ (14...Qc2?! 15.Rh2 Qe4 16.Re2=)) 14.Nc3+= Qg7 (14...Nc6 15.Nd5 Rf8 16.g4=) 15.0-0-0 (15.Na4 Ne7 16.Qh4 f5=) 15...c6 (15...Rf8 16.d4+=) 16.d4 Kc7 (16...ed4 17.Nd4 Ne5 18.Nf5 Bf5 19.Qf5+=) 17.Na4= Bd7 (17...ed4 18.Nb6 ab6 19.Rd4=) 18.Nb6+= ab6 19.d5 (19.Rhf1 ed4 20.Bd4 Rhe8=) 19...c5 (19...Ne7 20.Qh4+=) 20.Nd2 b5 21.Rhf1 (21.Rdf1 Kd8+=) 21...Rhf8 (21...Rhf8 22.Rf3 Kd8=; 21...b4 22.ab4 cb4 23.Qf3+=). Klugmann – Labahn,Wolfgang, corr SOK–89–38, 1990.

11.h3 Kd8 12.Nh4 Qg7 13.Rf1 Nf4 14.Qf3 Rf8 (14...Qg5 15.Nf5 Bf5 16.ef5 Ng2 17.Kd1–+) 15.c3 (15.g4!?–/+) 15...Qg5–+ 16.d4 Bb6 (16...Qh4 17.g3 Qh3 18.dc5–+) 17.Qf2? (17.Nf5 Bf5 18.ef5 Ng2 19.Ke2 ed4 20.Bc1 Re8 21.Be6–+) 17...Be6 (17...Qh4 18.g3 (18.Qh4?? Ng2 19.Kd2 Nh4–+) 18...Nh3 19.gh4 Nf2 20.Rf2 ed4 21.Rf4–+) 18.Nf3 (18.Bb5 a6 19.Be2 Qh4–+) 18...Qg2 (18...Ng2?! 19.Kd1 Ne3 20.Ke1–/+) 19.Bb5 Qh3 (19...f5 20.ef5 Bf5 21.Qg2 Ng2 22.Kd2–+) 20.Rg1 (20.Bc1 Ng2 21.Kd2 f5–/+) 20...Qh6 21.Bf1 (21.Qh4 Qh4 22.Nh4 ed4–+) 21...ed4 (21...f5 22.ef5 Rf5 23.Bb5–+) 22.cd4 Ba5 (22...Ne5 23.Ne5 fe5 24.Qd2–+) 23.Nbd2 Rg8 (23...d5 24.e5–+) 24.0-0-0 (24.Rg8 Bg8 25.d5 Bb6–+) 24...Bg4 (24...Rg1 25.Qg1 d5 26.e5–+) 25.Rg3 (25.Bc4 d5 26.Nh2 dc4 27.Rg4 Nd3 28.Kc2 Nf2 29.Rg8 Ke7 30.Ra8 Nd1 31.Nc4 Ne3 32.Kd3 Nc4 33.Kc4 Qh2–+) 25...Ke7 (25...d5 26.Nh2 Be6 27.Rg8 Bg8 28.Ng4–+) 26.e5 (26.Bc4 Be6 27.Kb1 Rg3 28.Qg3 d5 29.ed5 A) 29...Bd5 30.Re1 Kd6 31.Ne4 Kd7 32.Qg4 Ke7 33.Nc3 Kf8 34.Nd5 (worse is 34.Bd5 Nd5 35.Nd5 Be1 36.Nc7 Rb8+=) 34...Be1 35.Nf4+/– (worse is 35.Ne1 Nd5 36.Bd5 Qg6 37.Qg6 hg6–/+); B) 29...Nd5–+) 26...f5 (26...fe5 27.de5 de5 28.Be5 Ne5 29.Ne5 Bd1 30.Nec4–+) 27.Bc4 (27.Re1 de5 28.de5 Rad8 29.Qc5 Ke8–+) 27...d5 28.Bb5 a6 29.Bf1 Ne6 (29...Raf8 30.Re1–+) 30.Kb1 f4 31.Rg1 Qh5 32.Be2 Bd2 (32...Qf5 33.Ka1–+) 33.Rd2 Bf3 34.Rg8 Be4?? (better is 34...Rg8 35.Bf3 Qg6 36.Ka2 Qg3–+) 35.Ka1 Rg8?? (better is 35...Qh1 36.Rg1 Qh3+=) 36.Bh5+– Na5 37.Ka2 (37.Re2!? Nc4 38.Bc1 c5 39.Qh4 Kd7+–) 37...Nc4 38.Rd1?? (better is 38.Re2+–) 38...Rg2–/+ 39.Qh4 Kd7 1–0. Makowski,Zbigniew – Okecki,Jerzy, Olsztyn Poland, 1990.

12.Na4 Na5 13.Nc5 dc5 14.Bd5 Nf4 15.Qh6 Qd6 16.Bc3+=.

12.Nd5 Rf8 13.Bb5 Qg7 14.g4 Nce7 15.Ne7 Ke7 16.g5–+.

12.Nd5 Rf8 13.Bd3 Qg7 14.Rf1 Nge7 15.Ne7 Ne7 16.g3–/+.

12.Nd5 Rf8 13.Rf1 Qg4 14.Qg4 Bg4 15.h3 Be6 16.Rb1 Nf4–/+.

12.Nd5 Rf8 13.Rf1 Qg7 14.Nh4 Na5 15.Bd3 c6 16.Bc3–/+.

12.Nd5 Rf8 13.Nh4 Na5 14.Ba2 c6 15.Bc3 cd5 16.Ba5 =.

12.Ba2 Qa4 13.Kd1 (13.Nc3 Qc2 14.Rb1 Qd3 15.Rc1 Nc6 16.Rf1 Kd8 17.g3 Bd7–+) 13...Qe4 14.Nc3 (14.Re1 Qf5 15.Qf5 Bf5 16.d4 Bb6 17.g4 Bd7–+) 14...Qf5 15.Qf5 Bf5 16.Nd5 (16.g4 Bd7 17.Nd5 0-0-0–/+) 16...0-0-0 17.Nf6 (17.d4!? ed4 18.Nd4–/+; 17.Re1 Nc6–/+) 17...Rdf8–+ 18.Nh5 Be4 19.Be6 Kd8 20.Bg4 Nc4 21.Bc1 c6 22.d3 Bf3 23.Bf3 Ne3 24.Be3 Be3 25.Rb1 Kc7 26.Ke2 Bd4 27.Rb3 d5 28.c3 Bb6 29.Rhb1 Nh4 30.a4 Nf3 31.gf3 Rb8 (31...Rhg8 32.a5 Ba5 33.Rb7 Kd6 34.f4–+) 32.Nf6 (32.f4 ef4 33.Rf1 Rbe8 34.Kd1 Kc8 35.Rf4 Re3–+) 32...Kd6 (32...h5 33.a5 Bc5 34.a6–+) 33.c4 Ke6 34.Ng4 dc4 35.dc4 h5 36.Nf2 Rhg8 37.Ne4 Rg2 38.Kf1 Rc2 39.c5 Bc5 40.Nc5 Rc5 41.Rb7 Rf8 42.R1b3 e4 43.Ra7 ef3 44.Rb2? (44.Re3 Kd6 45.Rae7–+) 44...Rc1 45.Kf2 Rh1 46.Ke3 (46.Rb6 Rh2 47.Ke3 f2 (47...Rh3?! 48.Rc6 Kd5 49.Rc1–+) 48.Rc6 Kd5–+) 46...Rh3 47.Rf2 h4 48.a5 Rg3 49.a6 h3 (49...c5 50.Rh7 h3 51.a7–+) 50.Rh7 c5 51.a7 c4 52.Kd4 c3 53.Rb7 (53.Kc3 Rc8 Decoy) 53...Rd8 54.Kc3 h2! 55.Rh7 (55.Rh2 Rc8 Decoy (55...f2 Passed pawn)) 55...Ra8 56.Rhh2 Ra7 57.Rh6 Ke5 58.Rh8 Rg2 (58...Rgg7 59.Rf1–+) 59.Re8 Kd5 60.Rg2 (60.Rf1 Rc7 61.Kd3 Rf7–+) 60...fg2 61.Rg8 Ra2 62.Kd3 Rf2 ½–½. Roldan,Antonio Jose – Ross,John E, email ICCF, 1998.

12.Bd3 A) 12...b5 13.Nh4 (13.Rf1 c6 14.Nh4 Qg7 15.Nf5 Qf7 16.Nh6 Qe6 17.Nc3 Kd7+=) 13...Rg8 14.Rf1 Kd8 15.Rf6 Qe7 16.Qg5 h6 17.Ng6 hg5+=; B) 12...Rf8 13.Nc3 (13.g3 b5 14.Nh4 Rg8 15.Nf5 c6 16.Rf1 Rb8 17.Bc3 Nb7+=) 13...Rf7 14.g3 a6 15.Be2 b5 16.Nh4 Nh4 17.Qh4 Nc4+=; C) 12...Kd8 13.g3 (13.Qh6 Qf7 14.Bc3 Nc6 15.Bb5 Bd7 16.g3 a6 17.Ba4 Qf8–/+) 13...b5 14.Nh4 Rg8 15.Nf5 c6 16.Rf1 Rb8 17.Bc3 Nb7–/+.

12.Bd5 Kd8 (12...c6 13.Ba2 Kd8 14.d4 Bb6 15.Nbd2 Qg7 16.g3 ed4 17.Nd4 Re8+=) 13.Nc3 (13.g3 c6 14.Ba2 b5 15.Bc3 Nc4 16.Bb4 Bb6 17.Nh4 Rg8–/+) 13...c6 14.Ba2 b5 15.g4 Nf4 16.Qh6 Qe7 17.d4 Bd4+=.

12.Be2 A) 12...Qa4 13.Bd3 (13.Kd1 Nc4 14.Bc1 Be6 15.Nc3 Qd7 16.Nd5 Bd5 17.ed5 Nb6–/+) 13...Be6 14.Nc3 Qd7 15.Nd5 Rf8 16.Nh4 Qf7 17.Rf1 Bd5–/+; B) 12...Qf7 13.d4 (13.Nc3 Nf4 14.Qf7 Kf7 15.Bf1 Rg8 16.g4 Be6 17.Na4 Bb6–/+) 13...ed4 14.Bd4 Bd4 15.Nd4 Nc6 16.Nc6 bc6 17.0-0 Rg8+=; C) 12...0-0 13.g3 f5 14.Nc3 a6 15.Rb1 b5 16.g4 fg4 17.hg4 Nf4–/+.

12.Bf1 A) 12...Kd8 13.d4 (13.Nc3 Rf8 14.g4 a6 15.Qh6 b5 16.Rb1 c6 17.Nh4 Qf7–/+) 13...ed4 14.Nd4 Re8 15.Nd2 Ne5 16.Nf5 Qf5 17.Qe8 Ke8 18.ef5+=; B) 12...Qf7 13.Nc3 (13.d4 ed4 14.Bd4 Bd4 15.Nd4 Ne5 16.Qf7 Kf7 17.Nc3 Bd7–/+) 13...Nc4 14.Bc4 Qc4 15.g4 Kd8 16.d3 Qe6 17.Bc1 Bd7+=; C) 12...Qa4 13.Bd3 (13.Kd1 Nc4 14.Bc4 Qc4 15.Nc3 Kd8 16.d3 Nf4 17.Qh6 Qf7–/+) 13...Be6 14.Nc3 Qd7 15.Nd5 Rf8 16.Nh4 Qf7 17.Rf1 Bd5–/+.

12.Nc3=+ Bd7 13.Ne2 (13.Rb1 0-0-0 14.g3 Nce7–/+) 13...0-0-0–/+ 14.g4 Nge7 (14...Nce7 15.Rb1–/+) 15.Ng3 (15.Rb1 Be8 16.Be6 Kb8–/+) 15...Be8–/+ 16.Nf5 Nf5 17.Qf5 Kb8 18.g5 (18.d3!?–/+) 18...Rf8 19.Qg4 fg5 20.Qg5 (20.Ng5 Qh6 21.Rh2 Rf4–+) 20...Bf2! 21.Kd1 (21.Kf2 Qg5) 21...Rd7 (21...Qg6!? 22.Qg6 Bg6 23.Ng5–+) 22.Be2 h6 23.Qg7 Rg7 24.Rf1 Bc5 25.d3 Rg2 (25...Rg3 26.Nd2 Rf1 27.Bf1–+) 26.Nd2 (26.Kd2 Bd7 27.Nd4 Rf1 (< 27...Bd4 28.Rf8 Bc8 29.c3+/–) 28.Nc6 bc6 (28...Bc6?! 29.Rf1 a6 30.Rf6–/+) 29.Rf1 Bh3–+) 26...Rf1 27.Nf1 Nd4 28.Bd4 Bd4 29.Rb1 Ba4 (30.h4 Bc2 31.Kc2 Re2 32.Kb3 Rg2–+) 0–1. Pommerel,Wim – Krasny,Henryk Jan, corr 3GMM–32, 1996.

12.g3 Bd7 13.Nh4 (13.Nc3 Nce7=+) 13...0-0-0 14.Nf5 Qf8 15.Rf1 Nge7 16.Ne7 Ne7 (16...Qe7 17.Bd5–/+) 17.Nc3=+ Qg7 18.g4 Ng6 19.Ne2 Rhf8 20.Bc1 Bb6 (20...Ba4 21.Qf5 Kb8 22.Kd1–/+) 21.d3 Rfe8 22.a4 (22.Bh6 Qe7=+) 22...Ba5 (22...Bc5 23.c3=+) 23.Kd1 (23.c3 Bb6=) 23...c6 (23...Bb6 24.Rb1=+) 24.Rb1 Bc7 25.Bd2 Be6 26.Be6 Re6 27.Qf5 Qd7 28.Be3 d5 29.Ng3 Nf4 30.Ba7= Rg8 31.Nh5 Nh5 32.ed5 cd5 33.Qh5 Ra6 34.Bc5 Bd8 35.Rb4 Rg5= 36.Qh4 f5=+ 37.Rb1 e4 38.Be3 Rg4!–/+ 39.Qf2 Rg7 40.Qf5 Ra4 41.Qd7 Rd7 42.Rf8 d4 43.Bg5 e3 44.Bd8 Rd8 45.Rd8 Kd8 46.Rb7 Ra1 47.Ke2 Rc1 48.Rb4 Rc2 49.Kf3 Rh2 (49...Rf2!? 50.Kg3 Rd2 51.Rd4 Kc7=+) ½–½. mrkt – Kiwiinoz, ChessWorld.net, 2004.

13.g3 Na5 A) 14.Bb5 a6 (14...Nh4 15.Qh4 Qg5 16.Qg5 fg5 17.h4 a6 18.Be2 g4 19.Rf1–/+) 15.Be2 Nh4 16.Qh4 Qg5 17.Qg5 fg5 18.h4 g4 19.Rf1–/+; B) 14.Be2 Nh4 (14...Ne7 15.g4 Be6 16.Nc3 Nac6 17.Na4 Bd4 18.c3 Bb6 19.Nb6+=) 15.Qh4 Qg5 16.Qg5 fg5 17.h4 g4 18.Rf1 Be6 19.Nc3–/+; C) 14.Ba2 Ne7 (14...Nh4 15.Qh4 Qg5 16.Qg5 fg5 17.h4 g4 18.Rf1 Nc6 19.Rf7–/+) 15.g4 Qg5 16.Qg5 fg5 17.Nf5 h5 18.Rf1 hg4 19.hg4–/+.

13.g3 Nd4 14.Bd4 ed4 (14...Bd4 15.c3 Nh4 16.Qh4 Bc5 17.Rf1 Qg5 18.Rf6 Qh4 19.gh4–/+) 15.Be2 Ne5 16.g4 d3 17.cd3 f5 18.Nf5 Bf5 19.Qh4–+.

13.g3 Nce7 14.Nc3 (14.d3 c6 (14...Nh4 15.Qh4 b5 16.Bb3 Qg5 17.Qg5 fg5 18.c3 Rf8 19.d4–/+) 15.Nc3 b5 16.Bb3 Nh4 17.Qh4 Qg5 18.Qg5 fg5 19.Ne2–/+; 14.Ra2 Nh4 (14...c6 15.Nc3 b5 16.Bb3 Nh4 17.Qh4 Qg5 18.Qg5 fg5 19.Ne2–/+) 15.Qh4 c6 16.Rf1 Rf8 17.Bc1 Ng6 18.Qh5 Qd7 19.d3–/+) 14...Rf8 (14...c6 15.Nf3 b5 16.Bb3 a5 17.Rf1 Rf8 18.a4 f5 19.ab5–/+; 14...Bd7 15.Nf3 Kc8 16.Rb1 Rf8 17.d3 f5 18.Ng5 f4 19.Be6+=) 15.0-0-0 (15.Na4 Bd4+= 16.c3 Bb6 17.Nb6 ab6 18.Nf5 Nf5 19.ef5+=; 15.Nf5 Nf5 16.ef5 Ne7 17.g4 Bd7 18.d3 Bd4 19.Ra2–/+) 15...f5 (15...Nh4 16.Qh4 c6 17.Rhf1 b5 18.Bb3 a5 19.Ne2–/+) 16.Nf5 (16.Rdf1 Nh4 17.Qh4 Rf6 18.ef5 Rf5 19.g4=) 16...Nf5 17.ef5 Rf5 18.Qe2 Bd4 (18...Rf2 19.Qe1–/+) 19.Rdf1 (19.Ne4 Bd7–/+) 19...c6 20.Rf5 Bf5 21.Rf1 Ne7 (21...Bh3!? 22.Rf7 Qh6–/+) 22.g4+= Bg6 23.Qf3 Kd7 24.Qf6 (24.h4 e4! 25.Qh3 d5 26.g5 Kd8–/+) 24...Qf6–+ 25.Rf6 d5 (25...d5 26.Be2 b5–/+) 0–1. Zakis – Dolgitser,Konstantin, corr Latvia, 1980.

13.g3 Nge7 A) 14.Qf3 Bd7 (14...Qg5 15.Qg2 f5 16.Nf3 Qh5 17.ef5 Nf5 18.Bd5 Qg6 19.g4–+) 15.Qd3 Qg5 16.Nc3 Nd4 17.Rc1 b5 18.Ba2 c6 19.Ng2–+; B) 14.g4 Bd7 (14...Nd4 15.Bd4 Bd4 16.c3 Bc5 17.Rf1 Bd7 18.d3 b5 19.Bb3–/+) 15.Rf1 Kc8 16.Qf7 Qf7 17.Bf7 Rf8 18.Bb3 Ng6 19.Ng6–/+.

13.g3 Re8 A) 14.Nf3 Nge7 (14...Rf8 15.Rf1 f5 16.Nc3 Bd7 17.Rb1 Nge7 18.Qg5 Qg6 19.Qg6–/+) 15.g4 Ng6 16.d3 Nf4 17.Qf7 Qh6 18.g5 fg5 19.Ba2–+; B) 14.Nc3 Nh4 (14...Nd4 15.0-0-0 Nh4 16.Qh4 Be6 17.Be6 Re6 18.Kb1 b5 19.Rhf1–/+) 15.Qh4 Qg5 16.Qg5 fg5 17.Na4 Nd4 18.Rc1 b5 19.Bd5–/+; C) 14.Nf5 Bf5 15.Qf5 Nd4 16.Bd4 ed4 17.Kd1 Ne5 18.Be2 Re7 19.g4–/+.

13.g3 Nh4 14.Qh4 Qg5 (14...Na5 15.Be2 Qg5 16.Qg5 fg5 17.h4 g4 18.Rf1 Be6 19.Nc3–/+) 15.Qg5 fg5 16.h4 gh4 17.Rh4 h5 18.Be2 Rg8 19.Rh5–/+.

13.Ng6 hg6 14.Qf3 g5 15.c3 (15.Rf1 Rh4–/+) 15...g4–+ 16.Qg3 Qh7 17.d3 gh3 0–1. Kott,Frydolin – Budlevskis,Bruno, corr ICCF–Cup8 V049, 1990.

10.Bb3 Nb3 11.ab3 0-0 12.0-0 Nf4 13.Qh4 Qd7 14.d4 (14.Kh1 Qg4 15.g3 Qh4 16.Nh4 Bh3-/+) 14...Qg7 15.g3 f5 16.Nfd2 (better 16.c3!? fe4 17.Ng5-/+) 16...Bd7 17.de5 (17.c3 fe4 18.cb4-+) 17...Bc5 (17...de5 18.Rf4 Bc5 19.Kh1 fe4 20.Rf8 (20.Ne4?? Rf4 21.Qf4 Rf8-+; 20.Re4 Bc6 21.Ra5 b5=+) 20...Rf8 21.Ba3 (21.Qe4?? Bc6 22.Qc6 bc6-+) 21...Ba3 22.Na3= (22.Ra3? e3 23.b4 Bc6 24.Kg1 ed2 25.Qc4 Kh8 26.Nd2 Qd7-/+)) 18.Kh1 Ng6 19.Qh5?! (19.Qg5 fe4 20.b4 Rf1 21.Nf1 Bb4-+) 19...fe4 20.Na3 (20.b4 Rf1 21.Nf1-+) 20...e3 21.Nf3 (21.b4 Bc6 22.Nf3 Bb4-+) 21…e2 (21...e2 22.e6 Qb2 23.ed7 ef1B 24.Qd5 Kg7 25.Rf1 Ba3-+) 0-1. mgilbert (2100) – pcmvr, net-chess.com, 2021.

10.Be2 0-0 11.g3 Be6 12.c3 =.

10.Be2 Be6+=.

10.Bf1–/+.

10.Nh4 Nc4 11.Ng6+= Bg4? 12.Qg4+– Qd7? 13.Qd7 Kd7 14.Nh8 Nb2 15.Nf7 Rg8 16.Nh6 (better is 16.a3!? Ba5 17.0-0 Nc4 18.Rf6 Bd2 19.Nd2 Nd2+–) 16...Rg2 17.Kf1 Rg6 18.Nf5 Bc5 (18...Rg4 19.a3 Ba5 20.Ra2 Re4 21.Rb2 Rf4 22.Ke2 Rf5 23.Rb7+–) 19.d3 Nd1 20.Ke2 (20.h4 d5 21.Ke2 Nb2+–) 20...Nf2 21.Rf1 1–0. Nemec,Zdenek – Ridky,Vladimir, CSSR ZK, 1990.

10.Nh4 Nc4 11.Ng6+= Bg4? 12.Qg4+– hg6 13.Qe6 Qe7 14.Qc4 Bc5 +–.

10.Nh4 Nc4 11.Ng6 hg6 12.Qh8 Kd7 13.Qh3 f5 14.Bc3 Bc3 15.Nc3 += (< 15.Qc3 Qh4 16.Kd1 Qe4–/+).

10.Nh4 Bg4? 11.Qg4 Nc4 12.Ng6 hg6 13.Qe6!

11.Ng6 hg6–+ 12.Qe2 Nc4 13.Qc4 Bc5 14.Nc3 Be6 (14...c6 15.Rb1–+) 15.Nd5–/+ Kd7 16.d4 ed4 17.Bd4 Bd4 (17...Bd5 18.ed5 Qe7 19.Kf2–+) 18.Qd4 Bd5 19.Qd5 Qe7 20.0-0 (20.Qb7 f5 21.0-0 Qe5 (21...fe4?! 22.Rae1=) 22.ef5 Qh2 23.Kf2 Qe5–/+ (23...gf5?! 24.Qb5 Kd8 25.Qf5=)) 20...Rae8 21.Rab1 b6 22.Qb5 (22.Rf4 Qe6–/+) 22...Kc8 (22...Kd8 23.Qb2–/+) 23.Qa6 (23.Rb4 Qh7 24.h3 Qe7–/+) 23...Kb8–+ 24.Rfe1 (24.Qd3!?–+) 24...Qe5 25.h3 Qd4 26.Kh2 (26.Kh1 Re4 27.Qd3 Rhh4–+) 26...Re4 27.Re4 Qe4 28.Rf1 (28.Qd3 Re8–+) 28...Rh5 (28...Qe5 29.Kh1–+) 29.Qa3 (29.Qd3 f5–+) 29...Rc5 30.Qd3 Qd3 (30...f5 31.Qg3–+) 31.cd3 f5 32.Rf3 (32.Kg3 Rc3 33.Rd1 Rc2–+) 32...Re5 33.Rg3 (33.a3 c5–+) 33...Re6 34.Rg5 (34.d4 c5–+) 34...c5 35.h4 b5 (35...f4 36.Rg4 Rf6 37.Rg5–+) 36.g4 fg4 37.d4 (37.Kg3 a6–+) 37...Kc7 (better is 37...cd4 38.Rb5 Kc7–+) 38.dc5–/+ dc5 39.Rc5 Kb6 40.Rg5 Ka5 (40...Re2 41.Kg3 Ra2 42.Rg6 Kc5 43.h5–/+) 41.Rg4 b4 42.Kg3 Rf6 (42...Re2 43.Rg6 Ra2 44.Rg7–/+) 43.Rd4 Ka4 44.Rd2 (44.Re4 a6–/+) 44...a5 45.Rd4 (45.Kg4 b3–/+) 45...Ra6 (45...Ka3 46.Rd2–/+) 46.Rd3–/+ Kb5 (46...Rc6 47.Rd2–/+) 47.Kf4 (47.Rd8 Rf6–/+) 47...Kc4 48.Ke3 (48.Re3 Rf6 49.Kg3 a4 50.Re4 Kc3 51.Re3 Kb2–+) 48...a4 (48...Re6 49.Kd2–+) 49.Rd4 Kc3 50.Rd3 Kb2 51.Rd2 Ka3 52.Rc2 (better is 52.Ke2–+) 52...b3 53.ab3 ab3 54.Rc3 (54.Rc1 b2 55.Rb1 Ka2 56.Rb2 Kb2–+) 54...Ka2 (54...Ka2 55.h5 b2–+) 0–1. Holmberg,Krister – Nilsson,Karl Erik, corr SSKK 2–770, 1994.

12.Bb3 Nb3 13.ab3 Nf4 14.Qf3 Qg8 15.Rf1 A) 15...Qg5 16.g3 Bg4 17.Nf5 Qf5 18.ef5 Bf3 19.Rf3 Nd5 20.c3 Bc5–/+; B) 15...Kd8 16.Bc3 Bc3 17.Nc3 Qg5 18.g3 Ke7 19.Qf2 Nh3 20.Qe2 Bg4+=; C) 15...Qg4 16.g3 (16.Qg4 Bg4 17.Ra4 a5 18.Bc3 b5 19.Ra2 Ke6 20.g3 Nh3–/+) 16...Qf3 17.Nf3 Ne6 18.c3 Bc5 19.d4 Bb6 20.Nbd2 ed4–/+; D) 15...Bg4 16.Qe3 Qg5 17.g3 Qh4 18.Qf4 ef4 19.gh4 f3 20.c3 Bc5+=; E) 15...Ke8 16.g3 (16.Bc3 Bg4 17.Qf2 Bc5 18.Qg3 Qg5 19.Nf3 Qg6 20.d3 Bf3–+) 16...Bg4 17.Qe3 Qg5 18.Ra4 a5 19.Qb6 Ra6 20.Qe3 Rg8–+.

12.Bb3 Nb3 13.ab3 Nf4 14.Qf3 Qg8 15.g3 Bg4 (15...Qg5 16.Nf5 Bf5 17.ef5 Nd5 18.c3 Bc5 19.Ba3 Ba3 20.Na3 Rhg8–/+) 16.Qf2 (16.Qf1 Qg5 17.Ba3 Ba3 18.Ra3 Ne6 19.h3 Nd4 20.hg4 Nc2–/+) 16...Nh3 (16...Nd3 17.cd3 Qb3 18.0-0 Qe6 19.Ba3 Ba3 20.Ra3 b6+/–) 17.Qe3 (17.Qf1 Qg5 18.Qd3 Bc5 19.Rf1 Nf4 20.gf4 Qh4–+) 17...Qg5 18.Nf5 (18.Qd3 Bc5 19.Rf1 Nf4 20.gf4 Qh4–+) 18...Bf5 19.Qg5 Ng5 20.ef5 d5 21.Ke2 h5 22.d3 Nf7 23.Nd2 Nd6 24.c3 Bc5 25.Rhf1 Rag8 26.b4 Bb6 27.c4 dc4 28.dc4 c5 29.Ba3 cb4 30.Bb4 Rg4 31.h3 Rd4 (31...Rg3? 32.Bd6 Kd7 33.c5 Rh3 34.cb6 ab6 35.Ba3+–) 32.Ba3 (32.Bc3 Ne4 (worse is 32...Nc4 33.Bd4 Bd4 34.Nc4+/–) 33.Bd4 Ng3 34.Kf2 Nf1 (34...Bd4 35.Kg3 Ba1 36.Ra1+/–) 35.Bb6 Nd2 36.Ra7 Nc4–/+) 32...Rc8 33.Rfc1 Bc5 34.Bc5 Rc5 35.Ra7 Rc7 (35...Nc4 36.Rb7 Kd6 37.Nb3+–; 35...Nf5?! 36.Rb7 Ke6 37.Rc3=) 36.Rb1 Nf5 37.g4 hg4 38.Rbb7 Rb7 39.Rb7 Kd6 40.hg4 Rg4 41.Rb6 Ke7 42.Rb7 Kd8 43.c5 Nd4 44.Kf2 Rf4 45.Ke3 Ne6 46.c6 Nd4 47.Rd7 Kc8 48.Ne4 Rf3 49.Kd2 Nc6 50.Rf7 Rf4 51.Rf6 Rf6 (better is 51...Re4!? 52.Rc6 Kd7–/+) 52.Nf6= Kc7 53.Ng4 ½–½. pierre – vucko, ChessHere.com, 2005.

12.Bb3 Nb3–/+ 13.ab3 Nf4 14.Qf3 Rg8 15.Ba3 Bg4 16.Qf1 Ba3 17.Ra3–/+.

12.Bb3 Nb3 13.ab3 Nf4 14.Qf3 Rg8 15.g3 Bg4 16.Qe3 Ng6 17.Nf5 (< 17.Ra7 Nh4 18.Rb7 Ke8 19.gh4 Ra2 20.Rb4 Rb2–/+) 17...Bf5 18.ef5 Nf8 19.Ra7 Ra7 20.Qa7 Qc7 21.Qe3 Qa5 22.Kd1 Qd5 23.Re1 Nd7 24.Kc1 Ra8 25.Qh6 Qf7 26.Re4 Ba5 27.Ba3 c5 28.Rg4 Rg8 29.Ra4 Bd8 30.Nc3 Rg5 31.Qh3 d5 32.Ra7 Kd6? (better is 32...b6!?+/–) 33.Qf1+– (< 33.Rb7 Kc6 34.Rb5 Bb6+/–) 33...b6? (33...Nb6+–) 34.b4 Ke7 (34...Rg8+–) 35.bc5 bc5 (35...Ke8 36.c6 Qg8 37.Rd7 Rg7 38.Nd5 Rd7 39.cd7 Kf7+–) 36.Bc5 Ke8 37.Nb5 1–0. mrkt – Kiwwinoz, ChessWorld.net, 2004.

12.Bb3 Nb3 13.ab3 Nf4 14.Qh6 Qf8 15.Qf8 Rf8 16.Ba3 (16.g3 Ng6 17.Nf5 Bf5 18.ef5 Nh8–/+) 16...Ba3–+ 17.Ra3 f5 18.Nc3 fe4 19.Ne4 Bf5 (19...d5 20.Nc5–+) 20.Nf5 Rf5 21.g3 Ne6 22.Rf1 Rf1 23.Kf1 Rf8 24.Kg2 a6 25.c3 d5 26.Nf2 Ng5 27.d3 Ke6 28.Ra2 Nf3 29.Re2 c5 30.h4 h5 31.Nh3 Rf5 (better is 31...Kd6–+) 32.Nf4+= (32.Nf4 Kd6 33.Kf3 ef4 34.gf4=). Rosner,Dirk – Starke,Heiko, corr DDR–ch I723, 1988.

12.Bb3 Nb3–/+ 13.ab3 Qg8 14.Rf1–/+.

12.Nc3 Bc5 13.Ng6 hg6–/+ 14.Qg6 The mate threat is Qf7 14...Qf8 15.Bb3 Nb3 16.ab3 Rg8 17.Qh7 Rg7 18.Qh4 Rg2 19.Rf1 Bg4 (19...Be6 20.Ba3 Bd4 21.Qh7 Qg7 22.Qg7 Rg7 23.Bb2–+) 20.Qh7 (20.Ba3!?–/+) 20...Qf7–+ Threatening mate... how? 21.Qf7 Kf7 22.Na4 (22.Ba3 Bd4 (22...Rh2?! 23.Bc5 dc5 24.Rf2 Rh1 25.Rf1 Rf1 26.Kf1–+) 23.h4 Ke6–+) 22...Re2 23.Kd1 Rh2 24.Kc1 Bf2 25.Nc3 Rah8 26.Ba3 Rh1 (26...Rh1 27.Kb2 Rf1 28.Rf1 Bd4 29.Bd6 Rh2–+; better is 26...Ke6–+) 0–1. Borrmann,Fritz – Weber,Theo, corr Gambite O–48, 1989.

12.Nc3 Bc5 13.Qh6!? Qf8 14.Qh7 Rh7 15.Ng6 Ke8 16.Nf8 Kf8 17.Bb3=+.

12.Nc3 cd5 13.Nd5 Kd7 14.Nb4 =.

12.Nc3 Bd7 13.Qh6 A) 13...cd5 14.Qg7 Ke8 15.Ng6 hg6 16.Qh8 Kf7 17.Qh7 Kf8 18.Nd5+– (18.Qg6?! Nc4+–); B) 13...Qf8 14.Qh7 Rh7 15.Ng6 Ke8 16.Nf8 Kf8=+.

13.Bc3 cd5 14.Ba5 Qa5 15.Ng6 hg6 16.Qh8+/–.

13.Bc3 cd5 14.Ba5 b6 15.Bb4 Nf4 16.Qh6 de4 17.Qg7 Ke6 18.g3 Nd5 19.Qg4 Kf7 20.Qe4 Bh3 (20...Nb4 21.Qb4 Bh3) 21.Qd5 1–0. Gerold – Naundorf, corr ICCF 1999.

13.Bc3 Bd7 14.0-0?? Qb6 (14...cd5 15.Ng6 hg6 16.Qg6–+) 15.d4 cd5 16.Ng6 (16.Rab1 Qc7 17.Ba5 Qa5 18.Rb7 A) 18...Qa2 19.Qf5 (19.Ng6?! hg6 20.Qg6 Rhf8 21.Qg7 Rf7 22.Rd7 Kd7 23.Qf7 Kc6+–) 19...Qa4 20.Qf6 Ke8 21.Ng6 Qd4 22.Kh1 Qg1 23.Kg1 hg6 24.Qf7 Kd8 25.Qd7; B) 18...ed4 19.Qf5 Qb5 20.Qf6 Ke8 21.Ng6 Qf1 22.Kf1 hg6 23.Qh8 Ke7 24.Qg7 Ke6 25.Qd7 Ke5 26.Qe7 Kf4 27.Qh4 Ke3 28.Qf2 Ke4 29.Re7; C) 18...de4 19.Qf5 Qb5 20.Qf6 Ke8 21.Ng6 Qf1 22.Kf1 hg6 23.Qh8 Kf7 24.Qa8+–; D) 18...Qa4 19.de5 D1) 19...Ne5 20.Qh6 Kd8 21.Qf6 Kc8 22.Rfb1+–; D2) 19...fe5 20.Qh6 (worse is 20.Ng6 hg6 21.Qg5 Ke8+–) 20...Kd8 21.Ng6+–; D3) 19...de5 20.Ng6 hg6 21.Qg6 Rhf8–+) 16...hg6 17.Qg6 Do you see the mate threat? 17...Raf8 18.Rab1 Qc7 (18...Bb5 19.Qg7 Ke8 20.Rf6 Rhg8 21.Re6 Kd8 22.Ba5 Qa5 (22...Rg7? 23.Bb6 ab6 24.Rb5+–) 23.Qb7 Qa3=) 19.Bd2? (better is 19.Ba5!? Qa5 20.Rb7–+) 19...de4 (19...Kd8 20.Ba5 Qa5 21.Rb7–+) 20.Qg7 Ke8 (20...Kd8!? 21.Ba5 Qa5 22.Rb7–+) 21.Ba5 Qa5 (21...b6!? 22.Qg6 Kd8 23.Bb4 Qc2 24.Rbe1–+) 22.Rb7–/+ Threatening mate: Qxd7 22...Qd8 23.Qg6 (23.Rf6 Rhg8 24.Rf8 Rf8 25.Qg6 Rf7 26.Qg8 Ke7 27.Qg5 Rf6 28.Qg7 Rf7 29.Qg5 Ke8 30.Qg8 Rf8 31.Qg6 Ke7 32.Qg7 Ke8 33.Qg6=) 23...Rf7–+ 24.de5 de5?? (better is 24...Qc8 25.Rfb1 Qc5 (25...fe5? 26.Qd6 Rhf8 27.Rb8+–) 26.Kh1 Rhf8–/+ (26...Qc2 27.Rb8 Ke7 28.ef6 Ke6 29.Rf1 Rh2 30.Kh2+–)) 25.Rd1= Kf8 26.Qe4?? (26.Qf7 Kf7 27.Rdd7 Qd7 28.Rd7 Kg6 29.Ra7=) 26...Qc8?? (better is 26...Rhh7 27.Qb4 Kg7–/+) 27.Qb4+– Kg7 28.Rdd7! Rd7 Decoy to d7 (28...Qd7 29.Rd7) 29.Qg4 Theme: Double Attack (29.Qg4 Kh6 30.Rd7+– (30.Qd7?! Qd7 31.Rd7 Rc8+/–)) 1–0. Mus,Roman – Kusmierek,Jozef, corr 2AMM Poland, 1993.

13.Bc3 Bd7 14.Ba5 Qa5 15.Ng6 hg6 16.Qg6=.

14.Ba5 Qa5 15.Ng6 hg6 16.Qh8 de4 17.Qg7 Ke6 18.Rf1 +/–.

14.Ba5 Qg8 15.g3 (15.0-0 de4 16.Nf5 Kd7 17.Ng3 Qc4 18.Kh1 Ke7 19.Qh6 b6–/+; 15.Ng6 hg6 16.Qf3 Be6 17.0-0 f5 18.Qa3 Kd7 19.Qa4 Kc8=) 15...de4 16.Rf1 (16.Nf5 Bf5 17.Qf5 Qd5 18.Bc3 Raf8 19.0-0 Kd8–+) 16...Nh4 (16...Be6 17.Nf5 Kd7 18.Bb4 d5 19.Nd6 a5–/+; 16...b6 17.Bb4 Ba6 18.Rf2 Nh4 19.Qh4 Rf8–/+) 17.Qh4 Qg6 18.Bb4 (18.Rb1 b6 19.Bc3 Bf5–+) 18...Be6 19.Rb1 Rhf8 20.Ba3 b6 21.Rb5 Kd7 22.d3 Kc6 (22...Rac8 23.de4 Bc4 24.Rd5 Bd5 25.ed5 Qc2 26.Qg4 f5 27.Qb4 Qc3 28.Qc3 Rc3 29.Bb4 Rc1 30.Ke2 Rc2 31.Bd2 Ra2 32.Kd3–+) 23.Rb2 ed3 24.Qb4 Rad8 25.Qb5 Kb7 26.cd3 Rc8 27.Bd6?? (27.Re2–+) 27...Rc1 (27...Rc1 28.Kd2 Qh6 29.Rf4 Rfc8–+ (29...ef4?! 30.Bf8 fg3 31.Bh6 gh2 32.Ke2+=)) 0–1. Buss,Michael – Maxfield,Jack, USCF89CM362, 1989.

15.Bb4 Ba6? 16.Nf5 +/–.

15.Bb4 Nf4 16.Qf3 Qc7–+ 17.0-0 (17.ed5 Qc2 18.0-0 Qd3–+) 17...a5 (17...Qc2 18.ed5 Qd3 19.Qd3 Nd3 20.Bc3–+) 18.Ba3 (18.Bc3 Qc5 19.Kh1 de4 20.Qe4 d5+=) 18...d4 (better is 18...Qc2!? 19.ed5 Qd2–+) 19.Nf5 (19.g3!? Rg8 20.Kh1+=) 19...Bf5–/+ 20.ef5 Rhg8 21.Rf2 (21.g3 Kd7–/+) 21...b5 (21...Rac8 22.Re1 Kd7 23.Qb3–+) 22.Kf1 (22.c3!?–/+) 22...Qc4–+ 23.d3 Qd5 24.Qe4 Qe4 25.de4 Rac8 26.g3 (26.Bc1 Nh5–+) 26...Nh3 27.Re2 Rg4 (27...Rc3 28.Bb2 Rc4 29.Ke1–+) 28.Bb2 (28.Rb1 b4 29.Bc1 Rc3–+) 28...Ng5 29.Rae1 h5 30.Kg2 Re4 (30...Ne4 31.Bd4 d5 32.Bb2–+) 31.h4 Re2 32.Re2 Ne4 33.Re4 (33.Bd4 d5 34.Bb2–+) 33...Rc2 34.Kf3 (34.Kh3 Rb2 35.a4 ba4–+) 34...Rb2 35.Re2 (35.g4 d5 36.Re1 hg4 37.Kg3 Ra2 38.h5–+) 35...Re2 36.Ke2 b4 37.Kd3 a4 38.Kd2 e4 39.Kc2 e3 (39...e3 40.Kd3 b3 41.ab3 ab3–+) 0–1. Faerber,HW – Schneider,HA, BdF, 1996.

15.Bb4 Nf4 16.Qh6 de4 17.g3 Nd5 18.Qg7 Ke6 19.Qg4 Kf7 20.Qe4 Nb4 21.Qb4 Be6 (21...d5 22.Qc3–/+) 22.0-0 Rc8 23.c3 Rc4 24.Qb1 (24.Qb5 Qd7 25.Qb1 Rg4–/+) 24...Bh3 (24...Rh4 25.gh4 Rg8 26.Kf2–+) 25.Rf3 (25.Ng2 d5–/+) 25...Qd7 (25...d5 26.Rf2–/+) 26.Nf5 e4 27.Ne3 ef3 28.Nc4 d5 29.Ne3 d4 30.Nd1 (30.cd4 Qd4 31.Qe1 f5–+) 30...dc3 31.dc3 Qd2 (better is 31...Kg7!?–+) 32.Nf2–/+ Qe2 33.a4 Rd8?? (better is 33...Be6–/+) 34.Qh7+– Kf8 35.Qh3 Kg7 (35...a5 36.Qh6 Ke7 37.Qg7 Ke6 38.Rb1+–) 36.Qg4 Kf7 37.Qf5 (37.Qh5 Kg7+–) 37...Kg7 38.Qf4 Kg6 (38...Re8 39.Rf1+–) 39.Rf1 Re8 40.a5 ba5 41.Qg4 (41.Qg4 Kf7 42.Qh5 Kg7 43.Qa5+–) 1–0. Sopermi (2275) – Blessing (2170), ajedrez21.com, 2001.

15.Bb4 Nf4 16.Qh6 de4 17.Qg7 Ke6 18.g3 Nd5 19.Qg4 Kf7 20.Qe4 Bh3?? 21.Qd5+– (21.Qd5 Be6 22.Qd3+–) 1–0. Gerold,Guenter – Naundorf,Helmut, corr ICCF EU/M/1236, 2000.

15.Bb4 Nh4 16.Qh4 d4 (16...a5 17.Ba3 de4 18.0-0=) 17.0-0= Attacks the backward pawn on f6 17...Qf8 (better is 17...Ke6=) 18.Bd6!+– Kd6 Theme: Deflection from f6 19.Rf6 A double attack 19...Ke7? (better is 19...Be6 20.Rf8 Raf8+–) 20.Rf8 Kf8 21.Qf6 Kg8 22.Rf1 1–0. Van Esbroeck,Dirk – Hinz,Lothar, corr ICCF WC VIII/IX, 1991.

15.Bc3 de4 16.Ng6 hg6 17.Qg6 =.

15.Bc3 Nf4 16.Qh6 de4 17.g3 Nd5 (17...Nh3 18.Rf1 Qf8 19.Qe3–+) 18.Qg7 Ke6 19.Qg4 Kf7 20.Qe4 Bb7 (20...Be6 21.Bb2–/+) 21.Bb2 (21.Rf1 Qc7 22.Nf5 Rad8+=) 21...Qd7 22.Nf5 Kf8 (22...Rab8 23.Rf1 Nf4 24.Qb4 Qf5 25.gf4–/+) 23.Rf1+= Rc8 (23...Ne7 24.Qh4 Nf5 25.Qf6 Qf7 26.Qf5 Qf5 27.Rf5 Kg7 28.d4+=) 24.Qh4 Ba6 (24...Rc2 25.Ne3 Rc8 26.Rf6 Nf6 27.Qf6 Qf7 28.Qd6 Qe7 29.Qh6 Ke8+=) 25.d3+= b5 (25...Rg8 26.c4 Rg6 27.Ba3+/– (worse is 27.cd5 Bd3 28.Ne3 Bf1 29.Nf1 Rc2–/+)) 26.Ba3+/– b4 (26...Rc2 27.Ne3! Rh2 28.Qh2 Ne3 29.Rf6 Kg8 30.Rd6+– (30.Bd6?! Ng4 31.Qh4 Nf6 32.Qf6 h6 33.Be5 Rh7 34.Qg6 Rg7 35.Qh6 Bb7+–)) 27.c4 bc3 (27...Rc4 28.dc4) 28.Nd6 Kg8 29.Qe4 Qe6 30.Nf5 h5 31.Ne3 Kf7 32.Qd5 Rcd8 33.Qf3 Rd3 (33...e4 34.de4 Bf1 35.Nf1=) 34.Rf2 (34.Bc5 h4+/–) 34...h4 (34...Bb5 35.Bc5 Qc6 36.Qc6 (worse is 36.Ba7 Qf3 37.Rf3 Ra8=) 36...Bc6 37.Rc1+/–) 35.g4+– Rg8 (35...Rd4 36.h3+–) 36.Qe4+/– Rg6 (36...Bb5 37.Nf5 Qb6 38.Bc1+/–) 37.Bc5+– Rd7 (better is 37...Qd7+–) 38.Rc1 Bd3 39.Qa4 c2 40.Rd2 (40.Nc2?? Rg4 41.Qg4 Qg4–+) 40...Rg8 41.Rcc2 Bc2 (41...Rgd8 42.Rb2 Bg6+–) 42.Rd7 (42.Rc2?! Rc8+/–; 42.Nc2? Rd2 43.Kd2 Qd5 44.Ke2 Qc5 45.Qb3 Kg7–+; 42.Qc2?! Rd2 43.Kd2 a5+/–) 42...Kg6 43.Qc2 Kg5 44.Rh7 Kf4 45.Ng2 Kg4 46.Rh4 Kf3 47.Qe2 1–0. Sopermi (2160) – pelaspigas (2075), ajedrez21.com, 2001.

15.Bc3 Nf4 16.Qh6 de4 17.g3 Nd5 (17...Nh3 18.Rf1 Qf8 19.Qe3–+) 18.Qg7 Ke6 19.Qg4 Kf7 20.Qe4 Be6 21.Bb2 Rc8 22.0-0 (22.c3–/+) 22...Ne7 (22...Qc7!? 23.Rac1 Qc4–/+) 23.d4 (23.Rf6 Kf6 24.Rf1 Bf5 25.Nf5 Ke6+/–) 23...Rc4 (23...Bd5 24.Qe2 Ng6 25.de5 de5 26.Ng6 hg6 (26...Kg6? 27.Qg4 Kf7 28.Be5+–) 27.Qe5 Rc6= (27...Rc2 28.Rf6 Qf6 29.Qf6 Ke8 30.Re1 Re2 31.Re2 Be4 32.Re4 Kd7 33.Re7 Kd8 34.Ra7 Ke8 35.Qh8)) 24.Qe2= Nc6 (24...Ke8!? 25.Rf6 Qc8 26.Qh5 Kd7=) 25.Nf5+= h5 (25...Rf8 26.d5 Bf5 27.Qc4+= (worse is 27.Rf5 Nd4 28.Bd4 Rd4+=)) 26.de5 de5 (26...Ne5 27.Be5 de5 28.Rad1+=) 27.Rad1+/– Nd4 28.Nd4 (28.Bd4 ed4 29.Rf4 b5 30.Rdd4 Rd4 31.Nd4 Bc4+=) 28...ed4+= 29.Qe4 h4?? (better is 29...Qd5 30.Qh4 Rh6=) 30.Rd4+– (30.Bd4?! hg3 31.hg3 Rh6=) 30...Rd4 31.Bd4 (31.Qd4?! Qd4 (31...Ba2?? 32.Rf6 Ke8 33.Rd6+–) 32.Bd4 Rh6=) 31...Rh5 32.g4 Rh6 (32...Rg5 33.Bf6 Qf6 34.Qh7 Rg7 35.Rf6 Kf6 36.Qh4 Kf7 37.Qh5 Kf8+–) 33.Bf6!! Qf6 (33...Rf6 34.Qh7) 34.g5 Qf1 35.Kf1 Rg6 36.Qh4 Rg7 37.a3 Kg8 38.Kf2 (38.Qe4 Bf7+–) 38...Rd7 (38...Rf7 39.Ke3+–) 39.Qe4 Bf5 (39...Rf7 40.Ke3 Bf5 41.Qe8 Kg7+–) 40.Qf5 Rf7 41.Qf7 (41.Qf3 Kf8+–) 41...Kf7 42.Ke3 Kg6 43.Kf4 b5 44.h4 a5 45.c3 Kg7 46.h5 (46.h5 Kf7 47.Kf5+–) 1–0. Sopermi (2220) – atosigao (2025), ajedrez21.com, 2001.

15.Bc3 Nh4 16.Qh4+= Ba6 17.ed5 Qc8 18.0-0-0 (better is 18.Qe4!?+=) 18...Qc4–+ 19.Qh3 Qd5 20.d4 e4 21.Rhe1 Rac8 (21...Qa2 22.d5 Raf8 23.Qe6 Kd8 24.Qd6 (24.Bf6?! Kc7+–) 24...Kc8 25.Re4+–) 22.Bb2 b5 (worse is 22...Qa2 23.Re4 Kd8 24.d5+/–) 23.Qh6 Bb7 (23...Qa2?? 24.Qg7 Kd8 25.Qh8 Kc7 26.Qh7 Kb8 27.Qe4+–) 24.Re3 Rcg8 (24...Qa2 25.d5 Rc2 26.Kc2 Rc8 27.Rc3 Rc3 28.Kc3 Bd5 29.Qh7 Kf8 30.Qh6 Ke7 31.Qc1 Qc4 32.Kd2+/–) 25.Rf1 Rg6 (25...Qa2?! 26.Qf6 Kd7 27.Qf5 Kc7 28.Qb5+=) 26.Qh4 Qe6 (26...Qa2 27.d5 Kd7 28.Rf6 Qd5 29.Rg6 hg6 30.Qh8+–) 27.d5 Bd5 28.Ra3 Ra8 (28...Ba2 29.Ra7 Kf8 30.Bf6+–) 29.Qh7 Qf7 30.Qh4 Qg7 (30...Rg2 31.Rf6 b4 32.Rf7 Kf7 33.Ra5 Rg1 34.Kd2 e3 35.Ke3 Re8 36.Kf2 Rg2 37.Kf1+–) 31.Rf5 Bc6 (31...Ke6!? 32.Qf2 b4–/+) 32.Rh5+= Ke6 (32...Qg8 33.Bf6 Ke6 34.Bd4+/–) 33.Qh3= Rg4 34.Kb1 Rg8 (34...Qg8 35.Rh6 Kd7 36.Bf6+– (36.Rf6?! Kc7=)) 35.Rh7 Qg5 36.Raa7 Qd2 37.Qb3 d5 38.Ra6 Rc8 39.Qb5 Qe1 40.Bc1 Kd6 41.Qb7 Kc5 42.Qb6 (42.Qc8?! Qb4 43.Ka1 Qc3 44.Kb1 Qb4 45.Bb2 Qe1 46.Bc1 Qb4=) 42...Kd6 43.Rh8 Rc7 44.c4! Rg2 (44...dc4 45.Qd4 Double attack (45.Qd4 Decoy)) 45.Rd8 Ke6 46.cd5 (46.Qc7?? Qb4 47.Ka1 Qc3 48.Kb1 Qc2 49.Ka1 Qc1) 46...Ke5 (46...Kf5 47.dc6 Rgg7+–) 47.Qc7 Kd4 48.dc6 Kc4 49.Qf7 Kb5 50.Qb7 Kc5 51.Qb6 Kc4 52.Ra4 Kc3 (52...Qb4 53.Qb4) 53.Qc5 1–0. b4_player – opponent, gamecolony.com, 2007.

15.d4 de4 16.Bc3–+.

15.d4 Nf4 16.Qe8 Re8 17.g3 Ng6 (17...ed4?! 18.gf4 de4 19.Rd1=) 18.Ng6 hg6 19.ed5 Bf5–/+ (19...ed4?! 20.0-0-0+=).

15.d4 Nf4 16.Qf3 Qa4–+ 17.Bd2? (17.Qc3 de4 18.de5 fe5 19.Qc7 Qd7 20.Rd1 Qc7 21.Bc7–+) 17...Qd4 18.Rd1 Bg4?? (18...Qe4!? 19.Qe4 de4 20.Bf4 ef4 21.Rf1–+) 19.Qg4 Qe4 20.Kf1 Qc4 21.Kf2 Nd3! 22.Kf3 (22.cd3 Qg4) 22...e4 (22...Qg4 23.Kg4 Nf2 24.Kf3 Nh1 25.Rh1–+) 23.Kg3 Rag8 (23...Qc2? 24.Nf5 Kd8 25.Qg7+–) 24.Nf5 Kd8 25.Ng7 Ne5 (25...Ne5 26.Ba5 b6 27.Bb6 ab6–+; 25...Qc2?! 26.Rhf1+=) 0–1. Auseron – Calderon, corr Spain, 1990.

15.d4 Nf4 16.Qf3 Qh5 17.Qh5 Nh5 18.ed5 Nf4 19.de5 (19.c4 Rg8 20.de5 (20.g3 Nd3 21.Ke2 e4 22.Ke3 b6 23.Bd2 Ba6 24.Rhc1 Nc1–/+) 20...Nd3 21.Ke2 Ne5 22.Rhc1 Rg4 23.Be1 Bd7 24.Rab1 b6–/+) 19...fe5 20.c4 (20.Rd1 Bg4 21.Rd2 Rac8 22.g3 Nh3 23.Bb4 Rc4 24.c3 b6–/+) 20...b6 (20...Rg8 21.g3 Nd3 22.Kd2 Nb2 23.Kc3 Na4 24.Kb3 Nc5–/+) 21.Bd2 Nd3 22.Ke2 Nb2 23.Bg5 Ke8 24.Rhf1 (24.Rhc1 Rg8 25.Rab1 Nc4–/+ (25...Rg5?! 26.Rb2 Bd7 27.h3+=)) 24...Bg4 (24...Rg8–/+) 25.Ke1 Rf8 26.h3 Bd7 (26...Nc4? 27.Rf8 Kf8 28.hg4+–) 27.Rf8 Kf8 28.Ke2 Nc4 29.Rf1 Kg8 30.Bh6 b5 (30...Bb5 31.Ke1 Ba6 32.Rf6+/–) 31.Rf6 (31.Nf3 Be8 32.Ne5 Bh5 33.g4 de5 34.gh5 Rd8=) 31...b4 32.Nf3 a5?? (better is 32...Bb5–/+) 33.Ng5+– a4? (33...b3 34.ab3 Nb6+–) 34.Rf7 Nb6 (34...Bb5 35.Rg7 Kf8 36.Ra7 (36.Rh7 Ke8 37.Kf3 b3+–; 36.Nh7?! Ke8+=) 36...Ke8 37.Ra8 Kd7 38.Ra7 Kc8 39.Rh7 Nb6 40.Ke1+–) 35.Rg7 Kf8 36.Rd7 Ke8 37.Rh7 (better is 37.Rd6 b3 38.ab3 a3+–) 37...b3 (37...Ra6+–) 38.Ne4 (38.Ne4 Nd7 39.Rh8 Kf7 40.Ra8+– (40.Nd6?! Kg6 41.Ra8 b2+–)) 1–0. Roczniak,Jan – Nogal,J, corr Poland, 1981.

15.d4 Nf4 16.Qf3 Qh5 17.Qh5 Nh5 18.ed5 Rg8 (18...ed4?! 19.0-0-0 b6 20.Bb4+=) 19.0-0-0 (19.g3 Bh3+=) 19...Rg4 (19...Bg4 20.de5 fe5 21.Rde1–/+) 20.g3+= Bd7 (worse is 20...Rd4 21.Rd4 ed4 22.Re1 Kf7 23.Bb4=; worse is 20...ed4 21.Rhe1 Kf7 22.Bc7+=) 21.de5 fe5 22.Kb2 Rf8 23.Rhe1 (23.Bd2!?+=) 23...Rf2–/+ 24.Rd2 Rd2 25.Bd2 Nf6 26.Be3 Nd5 27.Ba7 Rb4 28.Ka1 Ra4 29.Bg1 Nc3 30.Kb2 Na2 31.c3 b5 32.Nf3 Nc3! 33.Ne5 (33.Kc3 Ra3 Double attack) 33...de5 34.Re5?? (better is 34.Kc3 Ke6 35.Be3–+) 34...Kf6 35.Rc5 Ne4 36.Rh5 Kg6 37.Re5 Nf6 38.Re7 Re4 39.Re4 Ne4 40.Be3 Kf5 41.Bf4 Kg4 0–1. Schirmer,Michael – Fischer,A, corr, 1987.

15.d4 Nh4 16.Qh4–/+ Qb5 (16...Qa4 17.0-0 Rf8 18.Qh7 Rf7 19.Bd8 Ke8 20.Qg8 Rf8 21.Qg7 Qd4=) 17.Bd2 (17.Bc3 Qc4 18.Kd2 ed4 19.Bb2 Be6 20.Rhf1 Raf8 21.g3 Qb4–/+) 17...Be6 (better is 17...Qb2 18.0-0 Qd4 19.Kh1 Rf8–/+ 20.Bh6 Rf7 21.Rae1 Be6–/+) 18.de5= de5 19.ed5 (19.Rf1 Qa4 (19...Kd7= 20.ed5 Bd5 21.Rf6 Qc4=) 20.Qf6 Kd6 21.ed5 Qe4=) 19...Bd5 (19...Qd5 20.Rf1 Qd4 A) worse is 21.Qf6 Kd7 22.Rd1 Raf8+= (22...Ba2 23.Qg7 Kc6 24.Rf6 Be6 25.Re6 Kd5 26.Qd7 Kc4 27.Qa4 Kd5 28.Qb3 Kc5 29.Qa3 Kc4 30.Qb4 Kd5 31.Rd6 Ke4 32.Qb7 Kf5 33.Qd7 Ke4 34.Qg4); B) 21.Bb4 Ke8 22.Qd4 ed4 23.Rf6+=) 20.Rf1= Attacks the backward pawn on f6 20...Raf8 (20...Kd7 21.Rf6 (21.Rd1= Qc5=) 21...Qc4=) 21.Bb4+= Ke6 (21...Ke8+=) 22.Bf8 Rf8 23.0-0-0 (worse is 23.Qh7 Qb4 24.Ke2 Bc4 25.Kf2 Bf1 26.Rf1 Qc5 27.Kg3 Qa3 28.Rf3 Qa2+=) 23...Qc5 24.Qh3 f5 25.g4 f4 26.g5 Ke7 27.Qh7 Rf7 28.Qd3 Ke6 29.Rfe1 e4?? (better is 29...Rf5 30.g6 f3+/–) 30.Re4+– Be4 31.Qe4 Qe5 32.Qc4 (32.Qc4 Ke7 33.Qb4 Ke6 34.Re1 Qe1 35.Qe1 Kf5 36.Qe8+–) 1–0. Sokolski,Alexei P – Gurvich,A, corr URS–ch06, 1963.

15.ed5 Nf4 16.Nf5 Bf5 17.Qf5–/+.

13.0-0 Bc3 14.Bc3=+ cd5 15.Ba5 b6 (15...Nf4 16.Nf5 Bf5 17.Qf5–/+) 16.Bc3 (16.Bb4 Nf4 17.Nf5 Bf5 18.Qf5 Ne2 19.Kh1 Qg6–/+) 16...de4 17.Nf5 Bf5 (17...Kd7 18.Ng3 Nf4 19.Qf5 Qe6 20.Qe4–/+) 18.Qf5=+ Nf4?? (better is 18...Rf8 19.Qe4 Rc8=+) 19.Rf4+– 1–0. Kern,Michael – Gibson,Lee, compuserve, 1997.

13.0-0 Bc3 14.Bc3=+ cd5 15.Nf5 Bf5–+ 16.Rf5? Nc6 17.ed5 Nb8 18.Bb4 Nd7 19.Qh3 a5 20.Ba3 b5 (20...b5 21.Qb3 Qc8–+) 0–1. Rudbeck,Joergen – Thapper, corr NBC/89/238/21, 1989.

13.0-0 Bc5 14.Kh1 cd5 15.Nd5 Kd8 16.Nf6 Qf7–/+.

13.Bb3 Nf4 14.Qh6 Qf8 15.Qf8 Rf8 16.Rf1–/+.

13.Bb3 Nh4 14.Qh4 Qg6 15.Rf1 Bg4 16.d3 Nb3 17.ab3 Rhg8 18.Ra4 (18.h3 Be6–/+) 18...a5–+ 19.h3 (19.Ra1 b5 20.Qf2 Qh6–+) 19...Be6 20.g4 b5 21.Ra1 a4 22.ba4 ba4 23.Rd1 Qg5 24.Qf2 a3 25.Ba1 Rgb8 26.Qe2 h5! 27.Qd2 (27.gh5 Bc3 (27...Bh3)) 27...hg4 28.Qg5 fg5 29.hg4 d5 30.ed5 cd5 (worse is 30...Bg4 31.dc6 Bd1 32.Kd1 Bc3 33.Bc3 Rb1 34.Ke2 Rf1 35.Kf1–+; 30...Bd5?! 31.Rf5–+) 31.Kf2 Rc8 32.Nd5 Bd5 33.c4 Be6 34.Be5 Bg4 35.Rc1 (35.Rb1 Rf8 36.Ke3 a2–+) 35...Ra5 36.Bd4 Bh3 (36...a2 37.Ra1–+) 37.Rfd1 (37.Rh1 g4–+) 37...Rf8 38.Kg3 Be6 (38...g4 39.Rb1 Bd6 40.Kh4–+) 39.Bg7 (39.Rb1 Bd6 40.Kg2 Bg4 41.Re1 Kd7 42.Rb7 Bc7–+) 39...Bd6 40.Kg2 Rf4 41.Bc3 (41.Re1 Raf5 42.Re4 Re4 43.de4 Rc5–+) 41...Rg4 42.Kh1 Ra4 (42...Rf5 43.Rf1 Rh4 44.Kg1 Bc5 45.d4 Rf1 46.Rf1 Rd4 47.Kg2 Rg4 48.Kf3 Rc4 49.Be5–+) 43.Rb1 (43.Rg1 Rh4 44.Kg2 Rh3–+) 43...Ra7 (better is 43...Bd7 44.Re1 Kd8–+) 44.Re1 (44.Rg1 a2 45.Rb5 Rh4 46.Kg2–+) 44...Kd8 45.Ba5 Kc8 0–1. Bonetti,Shane – Tinker (2425), ICC, 2002.

13.Nf5 Bf5 14.Qf5 Qc8 15.Qc8 Rhc8–/+.

13.Qh6 cd5?! 14.Nd5 Kd8 15.Qg7 =.

13.Qh6 Nh4 14.Qg7 Kd8 15.Qf6 Kd7 16.Qh4 Qg6–/+ (< 16...cd5 17.Nd5 Bd2 18.Kd2+=).

10.0-0 Qg4 11.Qg4 Bg4 12.h3!? Na5 13.Be2–/+.

10.a3 Ba5 11.h3 Bb6 12.Rf1 Na5 13.Bd5 Qb5 14.Bc3 Kd8 15.Nh4 Qe8 16.Rf6 Nf4 17.Qg5 Qe7 18.Bg8 Ne6 19.Be6 Be6 20.Nf5 Bf5 21.ef5 Kd7 22.Qh6 Rhe8 23.g4 Nc4 24.Ra2 Bd4 25.d3 Be3 26.g5 Nb6 27.Bd2+= Bd4 28.c3 Bc5 29.Qh5 Rf8 30.Rh6 Rf7 31.f6 Qe6 32.Rh7 Raf8 33.Rb2 Bf2 34.Ke2 Rh7 35.Qh7 Rf7 36.Qh8 Qf5 37.Qb8 Bh4 38.Qg8 Rh7 39.Rb4 Bf2 40.d4 Rh3 41.Qf7+– Kc6 42.d5! Kc5 43.Qc7 Kd5 44.c4?? Ke4 45.Qb7?? d5+/– 46.cd5 Bd4= 47.d6 Nd5 48.Rd4?? ed4–+ 49.Nc3 dc3 50.Qb1 Ke5 51.Qf5 Kf5 52.Bc1 Rh8 53.Kd3 Ke6 54.Kd4 c2 55.d7 Nf6 56.gf6 Kd7 57.Kc3 Rc8 58.Kd2 Ke6 59.Bb2 Kf7 60.Kc1 Rc4 61.a4 a5 62.Be5 Rc6 63.Ba1 Rc8 64.Bd4 Ke6 65.Bb6 Kf6 66.Ba5 Ke5 67.Bb4 Kd4 68.Bd2 Kd3 69.Bf4 Rc4 70.Bd2 Rc7 71.Bc3 Rc3 72.a5 Rb3 73.a6 Rb1 0–1. Fritz 5.32 – Comet B50, 2004.

10.a3 Bc5 (--> 9.a3 Bc5 10.Nf3 Qd7).

10.Nc3 Bc3 11.Bc3 Qg4 12.Qg4 Bg4 13.0-0 (13.Rb1 Rb8+=) 13...0-0-0 (13...f5 14.Ng5 f4 15.Nf7–/+) 14.Rab1 (14.h3 Bd7+=) 14...Nf4 15.g3 (15.h3 Be6 16.Be6 Ne6–/+) 15...Nh3 (15...d5 16.gf4 dc4 17.Kf2–/+) 16.Kh1 Ng5 17.Ng5 fg5 18.Kg2 Rhf8 19.h3 Bd7 20.Bd5 g4 21.h4 Rf1 (21...b6 22.Bc4+=) 22.Rf1 Ne7 23.Bb3 Bc6 (23...h5 24.Rf7 Nc6 25.Rh7+=) 24.Be6 Bd7 (24...Kb8 25.d3 Ba4 26.Rf7=) 25.Bd7 (25.Bb3 h5=) 25...Kd7+= 26.Rf7 Rh8 27.h5 (27.d4 Ke6 28.Rg7 h5=) 27...Ke6 (27...h6 28.Rg7+=) 28.Rg7 c5 29.Rg4 Rg8 (29...b5 30.d3+=) 30.Rg8= Ng8 Black fights for the Initiative 31.Kf3 Nf6 32.g4 d5 33.ed5 (33.d3 b5=) 33...Nd5+= 34.Bb2 Nb4 (34...c4 35.Ke4 c3 36.Bc1+=) 35.Ba3 (35.Ke4 Nc2 36.Be5 Nb4+=) 35...Nc2 36.Bc5 b6 37.Bf2 (37.Bf8 Kd5=) 37...Nb4 38.a3 Nd3 39.Be3 Nb2 40.Ke4 Nc4 41.a4 Nb2 (41...a6 42.Bf2+=) 42.a5 (42.h6 Nc4+=) 42...ba5 43.Ba7 (43.d4 Nc4 44.d5 Kd7+=) 43...Nc4 44.d4 (44.Kd3 Kd5+=) 44...Nd6 45.Ke3 Nb5 46.Bc5 Nd4 47.g5 (47.Bb6 Nc6 48.Kd3 a4–+) 47...Nb3 (better is 47...Nf5 48.Kd3 Kd5–+) 48.Ba3 Kf5 49.g6 hg6?? (better is 49...Kf6 50.Bf8 h6+= (50...hg6?? 51.h6+–)) 50.hg6 (50.h6 Nd4 51.h7 Nc2 52.Ke2 Na3 53.h8Q+–) 50...Kg6–+ 51.Ke4 Kf6 52.Bb2 Nd2 (52...Nc5 53.Kd5 Nd7 54.Kd6–+) 53.Kd5 Nf3 54.Kc5 (better is 54.Ke4!? Ng5 55.Kd5–/+) 54...Kf5 55.Be5? (55.Bc3 e4 56.Ba5–+) 55...Ne5 (55...Ke5?! 56.Kb5=) 56.Kb5 Nc6 (56...Nc6 57.Ka4 Ke4–+) 0–1. Van Esbroeck,Dirk – Guzek,Hartwig, corr ICCF World Cup8–9, 1993.

10.h3 Bc5 11.Nc3 Na5 12.Bd3 (12.Bb5 c6 13.Be2 0-0 14.Qh6 b5 15.g4 Qg7–/+) 12...Qf7 (12...Qg7 13.Na4 Kd8 14.g3 Nf8 15.g4 Ne6–/+; 12...Kd8 13.Nd5 Qg7 14.g3 c6 15.Nc3 b5–/+) 13.g3 (13.Bf1 Nc4 14.Bc4 Qc4 15.Nh4 Qf7–/+) 13...Be6 (13...Nc4 A) 14.Bc4 Qc4 15.Nh4 (15.d3–/+ Qb4–/+) 15...Be6–/+; B) 14.Rb1 c6 15.Na4 Bb4–/+) 14.Rf1+= (14.Na4 0-0-0 15.Nc5 dc5+=) 14...Qg7 (14...Qd7 15.Nd5 0-0=) 15.Nh4 (15.Na4 0-0-0+=) 15...0-0-0 (15...Nc4+=) 16.Nf5 Qf7 17.Nd5 Bd5 (17...Rdf8 18.Bc3 Nc6 19.Bc4+=) 18.ed5= c6 (18...Rde8 19.Qg4 Kb8 20.Bb5 Qd5 21.Be8 Re8 22.d3+=) 19.dc6 (19.Qg4 Kb8 20.Bc3 Qc7=) 19...Nc6 20.Nh6 Qg7 21.Rb1 d5 22.Bb5 Kc7 (22...Rdf8 23.Nf5 Qd7 24.c4+=) 23.Bc6 Kc6 24.Rf3 Rhe8 (24...Kc7 25.Rc3 b6 26.Ba3=) 25.Nf5= Qd7 26.Rb3 (26.Ba3 Ba3 27.Ra3 b6+=) 26...b6+= 27.a4 Ne7 28.Nh6 Kb7 (28...Qe6 29.a5+=) 29.a5 (29.Nf7 Rc8 30.a5 Qf5 31.Qf5 Nf5–/+) 29...Rc8 (29...Qa4!? 30.Qf3 Qe4 (30...Qa5? 31.Ra1 Nc6 32.Nf5+–) 31.Qe4 de4+=) 30.ab6 ab6 31.Ba3 Ba3 (31...Qc6!? 32.Bc5 Qc5+=) 32.Rb6+/– Ka7 33.R6b3+=. Reuter,Alfred J – Plyusnin,Victor, IECC, 2000.

10.h3 Bc5 11.Rf1 A) 11...Nb4 12.Bb3 Qg7 (12...Qc6 13.Nc3 Kd8 14.a3 Nd3 15.cd3 Qb6=) 13.a3 Nc6 14.Nc3 Kd8 15.Ne2 Na5+=; B) 11...Na5 12.Nh4 Qg7 (12...Nc4 13.Ng6 Qf7 14.Rf6 Qf6 15.Ne5 Ke7+=) 13.Be2 Kd8 14.Nf5 Bf5 15.Qf5 Nh4–/+.

10.h3 Bc5 11.Nh4 Nce7+= 12.Rf1 b5 (12...Qa4 13.Ng6 Ng6 14.Bd3 Rf8 15.Qh7 Nf4=) 13.Bb3 Rf8 14.Nf5 Kd8 15.Qh7 Nf4+=.

10.h3 Nce7 11.0-0 Qc6 12.Bb3 Bd7 (12...Qe4 13.Nc3 Qf5 14.Qh6 (14.Qf5 Bf5 15.Rae1–+ Bc3–+) 14...Bc3 15.Bc3 Nf4–+) 13.d4 (13.Re1 f5 (13...0-0-0 14.c3 Ba5 15.d4 Nf4–/+) 14.ef5 (14.Ng5 Qb6 15.Kh2 Ba5–/+) 14...Bf5 15.Nc3 Bc3–/+; 13.c3 Ba5 14.Re1 f5 15.ef5 Bf5–/+) 13...0-0-0 (13...Qe4 14.c3 Ba5 15.Nbd2 (15.Nfd2 Qe3 16.Kh2–/+) 15...Qf5–+) 14.Nbd2 (14.a3 Ba5 15.Nbd2 Bc3–/+) 14...f5 (14...Nf4 15.Qh4 Rdg8–/+) 15.Nc4? (15.a3!? Bc3 16.Bc3 Qc3 17.de5 de5 18.Rae1–/+; 15.c3 Bc3–/+) 15...Nf4 (15...fe4 16.Ng5 Nf4 17.Qf7–+) 16.Qh4 (16.Qg5 fe4 17.Nfe5 Nh3 18.gh3 Rhg8 19.Nb6 Qb6 20.Bg8 de5 (20...Ng8? 21.Nd7 Kd7 22.Rf7 Kc8 23.Rg7+–) 21.Bh7 ed4–+) 16...Neg6 17.Qf2 fe4 18.Nfd2 (18.Ng5 Rdf8 19.Qe3–+) 18...Bh3! 19.d5 (19.gh3 Nh3) 19...Nd5 (19...Nd5 20.Kh2 e3–+) 0–1. Ripoll Cardell,S – Garriga Nualart,J, IICEAPE, 1985.

10.h3 Nce7 11.0-0 Qc6 12.d3 Ba5 13.Kh1 Bd7 14.Nh4 0-0-0 15.Rf6 Nh4 (15...Qb6 A) 16.Ng6? hg6 (16...Ng6?! 17.Bb3+=) 17.Qe5 de5 18.Rb6 Bb6–+; B) 16.Bc1+=) 16.Qh4= Ng6 17.Qg5 (17.Qh6 Qb6 18.Bb3 Qc5=) 17...b5 18.Bb3 Rdf8 19.a4 Rf6 20.Qf6 White launches an attack 20...a6 (better is 20...b4!?=) 21.ab5+/– Qb5 22.Na3 Qc6 23.Nc4 (23.Bd5 Qc5 24.Nc4 Bb6+–) 23...Bb4 24.Ba4 Qb7 25.Bd7 Kd7 26.Be5! de5 (26...Ne5 27.Ne5) 27.Ne5 A double attack 27...Ne5 28.Qh8 Bc3 29.Qh7 Kc8 30.Rf1 Threatening mate... how? 30...Kb8 (30...Qb2 31.Rf8 Kb7 32.Qf5+/–) 31.g4 (31.Qg8 Ka7+–) 31...Qb2+/– 32.Qh6 (32.Qh6 Ka7 33.Qc1+/–) 1–0. Nebe,Lutz – Dietzsch,B, corr SOK–89–44, 1989.

10.h3 Nce7 11.0-0 Qc6 12.d3 Kd8–/+ 13.Kh1 a6 14.a3 Bc5 15.Nc3 Qe8=+.

10.h3 Nce7 11.0-0 Qc6 12.d3 f5 13.Ng5 Qb6 14.Kh1 fe4 15.Ne4 Kd8=+.

10.h3 Nce7 11.c3 A) 11...b5 12.Be2 (12.Bf7 Kf7 13.cb4 Kg7 14.g3 a5 15.a3 Bb7–/+; 12.Bb3 Ba5 13.d3 d5 14.0-0 Bb7 15.Nfd2 0-0-0–/+) 12...Ba5 13.d4 0-0 14.g3 d5 15.a4 ba4–/+; B) 11...Ba5 12.d4 Qa4 (12...d5 13.ed5 Nd5 14.0-0 Ndf4 15.Qh6 a6–/+; 12...b5 13.Bd3 c5 14.0-0 Kd8 15.Bc1 c4+=; 12...Qc6 13.Nbd2 b5 14.d5 Qc5 15.Be2 Kd8–/+) 13.Bb3 Qc6 14.Nfd2 f5 15.ef5 Bf5–/+.

10.h3 Qg7 11.0-0 Bd7 12.Nc3 (12.Nh4!?–/+ Bc5 13.Kh2 0-0-0 14.Nf5 Qf8 15.g3 Nge7–/+) 12...Bc3 13.dc3 0-0-0 14.Bc1 Qe7 (14...Nge7 15.Bh6 Qg3 16.Rab1–/+) 15.Be3 (15.Bd5 Be6–/+) 15...Be6 (15...Nf4–/+) 16.Bd5 Rdg8 17.Nh4 (17.Nd2 Nd8–/+) 17...Nh4 18.Qh4 Rg6 19.Rf2 (19.Kh1 Rhg8 20.g4 Na5–/+) 19...Rhg8 20.Kh2 (20.Kh1 a6–/+) 20...a6 (20...Bd5 21.ed5 Qg7 22.Rg1–+) 21.Rb1 (21.c4!?–/+) 21...Bd5–+ 22.ed5 f5?? (better is 22...Qg7 23.Rg1 Ne7–+) 23.Qh5+= Nd8 (23...Nb8 24.Qf5 Nd7 25.Qe4+=) 24.Qf5= Qd7 25.Qe4 Rg3 26.Rbf1 Qg7 27.Re1 Kb8 28.c4 Nf7 29.a4 (29.Kh1 Ng5 30.Bg5 Qg5=) 29...Ng5 30.Bg5 Qg5 31.Rfe2 (31.Kh1!?+=) 31...Rc3 32.Re3? (32.Rb1 Qg3 33.Kh1 Qg6 34.Qg6 Rg6–/+) 32...Re3?? (better is 32...Rc4! 33.Qf3 Rc2–+) 33.Re3+= h5 34.Rb3 Rg7 35.a5 (35.Qf3 Rg6+=) 35...Rf7 (35...Ka7 36.Qe2+=) 36.c5 dc5 37.d6?? (better is 37.Rg3!? Qf5 38.Qe3=) 37...Qf4 (37...cd6 38.Qc6 Qf4 39.Kg1–+) 38.Qf4–/+ ef4 (worse is 38...Rf4 39.d7 Rf8 40.Rd3=) 39.dc7 Kc7 40.Rf3 (40.Rb6 Re7–/+) 40...Rf8 (40...b6 41.ab6 Kb6 42.h4–+) 41.Kg1 (41.h4 Kc6–/+) 41...Kd6 (better is 41...b5–/+) 42.g3? (42.c4 Kc7–/+) 42...Ke5 (better is 42...Rg8!? 43.Rf4 Rg3 44.Kh2 Rc3–+) 43.Kg2–/+ Rf5 44.Rb3? (44.Rc3 Kd4 45.Rf3 Ke4–/+) 44...fg3 (44...Rg5 45.Rb7 Rg3 46.Kh2–+) 45.Kg3 c4 46.Rb7 (46.Ra3 Kd4–+) 46...Kd4 47.Kh4 Ra5 48.Rb6 Kc3 49.Rc6 Rd5 0–1. Buczinski,Henryk – Niwinski,Wlodzimierz, Katowice Poland, 1971.

10.h3 Qg7 11.0-0 Kd8 12.Ne1–/+ Nf4 13.Rf4 ef4 14.Nd3 Bc5 15.Nc5 dc5–+.

10.h3 Qg7 11.c3 A) 11...Ba5 A1) 12.Bc1 Kd8 13.d3 Nf4 14.Bf4 ef4 15.0-0 Ne5–/+; A2) 12.d3 Kd8 13.g3 Bb6 14.Bc1 Na5 15.Bh6 Qe7–/+; B) 11...Bc5 12.d4 Kd8 13.g3 Bb6 14.Nbd2 Re8 15.Kd1 Na5=+; C) 11...Kd8 12.g3 Ba5 13.d3 Bb6 14.Bc1 Na5 15.Bh6 Qe7–/+.

10.h3 Qg7 11.Nh4 Bd7 12.Nf5! Qf8! 13.Nh4! Nce7! Wikman.

10.Qh6!? Qe7! 11.Nh4 Nh4 12.Qh4 Be6! 13.Qh5 Qf7! Wikman.

11.Rf1 Qg4 12.Qg4 Bg4 13.Na3 Bb6–/+.

11.Rf1 Qg4 12.Qg4 Bg4 13.Bb5 a6 14.Bc6 bc6 15.h3–+.

12.g3+= Qf7 13.Rf1 Ne7 (13...Qe6 14.a3 Bc5 15.Rh1 Nc4 16.Bc3 a5 17.Nh4 Nh4–/+) 14.Qh6 (14.Qh4 Be6 (14...Qe6 15.g4 Ng6 16.Qg3 Nc4 17.Bc3 Bc5+=; 14...Bc5 15.Ba3 Ba3 16.Na3 f5 17.Nb5 Ng6+=; 14...Nac6 15.Nc3 Ng6 16.Qh5 Qe6 17.Ng1 Bc3+=) 15.a3 Bc5 16.Nc3 Ng6 17.Qh6 Qd7–/+; 14.Qf7 Rf7 15.a3 Bc5 16.g4 h5 17.Nh2 hg4–/+) 14...Qg7 (14...Qg6 15.Qh4 Be6 16.Nc3 Qg7 17.a3 Bc5+=; 14...Bc5 15.Nc3 Qg6 16.Qh4 Bd7 17.Rb1 Qe8+=) 15.Qh4 (15.Qg7 Kg7 16.g4 Be6 17.a3 Bc5–/+) 15...Be6 16.a3 Bc5 17.Nc3 Ng6 18.Qh5 Qd7 19.Nh4 Nh4 20.Qh4 Bh3 21.Rh1 Bg2 22.Rh2 Bf3 23.g4 Qg7 (23...Bg4? 24.Rg2+–) 24.Rb1 c6 25.Qg3 (25.Na4 Bd4–/+ (worse is 25...Bg4 26.Nc5 dc5 27.Bc3+/–)) 25...Bg4 (25...Qg4?! 26.Rh3+=) 26.Rg2 h5 27.Na4 Bd4 28.c3 Bb6 29.Be2 (29.Nb6 ab6 30.Be2 Kf7–+) 29...Kf7 30.Ba1 (30.Nb6 ab6 31.Bc1–+) 30...Bc7 31.Bg4 (31.d3 Rg8–+) 31...Qg4 32.Qg4 hg4 33.Rg4 Rg8 34.Rg8 Rg8 (34...Kg8?! 35.Ke2–+) 35.Kf2 0–1. Reuter,Alfred – Kunakov,Oleg, IECC, 2000.

13.a3 Bc5 14.Nc3 (14.Bc3 Bb6 (14...Qb6 15.Rf1 Be6 16.Nh2 Bd4 17.Ng4 Bc3=) 15.Rf1 Qd7 16.Rh1 Qf7 17.Nh4 Ne7–/+) 14...Qb6 (14...Be6 15.Nd5 Qd7 16.Nh4 Nh4 17.Qh4 Kg7+=; 14...Rf7 15.Bb5 Qb6 16.Be8 Bf2 17.Kd1 Rg7–/+) 15.0-0-0 (15.Ke2 Be6+= (worse is 15...Qb2 16.Na4 Qa1 17.Ra1+= Bb6+/–) 16.Rhb1 c6 17.Na4 Qd8+=; 15.Na4 Bf2 16.Ke2 Qc6 17.Kf2 Qa4+=) 15...Be6 16.Rhf1 (16.Na4 Qc6 17.Nc5 Qc5+=) 16...Rac8 (16...Bc4 17.Na4 Qc6 18.Nc5 Qc5–+; 16...Nc4 17.Bc4 Bc4–/+) 17.Nh4= (17.Na4 Qc6+=) 17...Ne7 (17...Nh4 18.Nd5 Nb3 19.Kb1 Bd5 20.ed5+=) 18.Nd5+= Bd5 19.ed5 Rf7 20.Rf6 (20.Nf5!? Nf5 21.Bf5+/– (21.Qf5?! Ra8=)) 20...Rf6= 21.Qh7 Kf8 22.Ng6 Ng6 23.Bg6 Rg6 24.Qg6 Nc4 25.Rf1 Bf2 26.Bc3 (26.Qf5 Kg7 27.Qg4 Kh6 28.Qc4 Rf8+/–) 26...Na3+/– 27.Bb4 Nc2 28.Kc2 (28.Qf5 Ke7 29.Rf2 Qf2 30.Qf2 Nb4+–) 28...Qd4 (28...Ke7 29.Qe6 Kd8 30.Qf6 Kd7 31.Qf7 (31.Qf2?! Qf2 32.Rf2 Rh8+–) 31...Kd8 32.Rf2+–) 29.Bc3 Qa4 30.Kc1 Qa3 31.Kd1 Qa4 32.Ke2 Ke7 33.Qh7 (33.Kf2?! Rf8 34.Kg2 Rf1 35.Qe6 Kd8 36.Kf1 b5+–) 33...Kd8 34.Rf2 (34.Rf2 Qe8 35.Rf7 Qf7 36.Qf7+–) 1–0. Skerlik,Stanislav – Satosuo,Raimo, corr SVK–FIN, 1999.

13.Bc3 Qa4 A) 14.Rf1 Be6 15.Bb4 Qb4 16.Nc3 Nc4 17.Nd5 Bd5=+; B) 14.Bb4 Qb4 15.Nc3 Be6 16.a3 Qb6 17.Nd5 Qc5=+.

13.Bc3 Qb6 14.Rf1 Be6 15.Nh2 Bc3 16.Nc3 c6 17.Ng4 Qd8=+.

13.Bc3 Bc3 14.Nc3 Nc4 15.Nd5 Nb2 16.Nh4 Kg7 17.Rf1 Nd3=+.

13.Bc3 Bc3 14.Nc3 Nc4 15.Qh6 (15.Nh4 Nh4+= (15...Ne7+=); 15.Rb1 Ne3+=) 15...Na3 (15...Be6 16.a4+=) 16.0-0 (16.Nh4 Ne7 17.g4 Rf7+=) 16...Be6 (16...Qd7!? 17.Nb1 Qh3 18.Qh3 Bh3 19.Na3 Bf1 20.Kf1 c6=) 17.Nd5= Qd7 (17...Nc2 Not 18.Rac1 Qd7 19.Rc2+/–) 18.Nh4 Nh4 (18...Bd5 19.Ng6 hg6 20.Qg6 Qg7 21.ed5 Qg6 22.Bg6+=) 19.Qh4 'The pressure on the backward pawn f6 grows' 19...Bd5 (19...Qg7 20.Nf6 (worse is 20.Rf6 Bd5 21.Rf8 Rf8 22.ed5 e4–+) 20...Kh8 21.Rf2 Bh3 22.g4 Rf6 23.Qf6 Qf6 24.Rf6 Bg4 25.Rf7+/–) 20.ed5+/= Qg7 (20...Kh8 21.Kh2 b5 22.Rf2+/– (worse is 22.Rf6 Rf6 23.Qf6 Qg7=)) 21.Rf5+/– Kh8? (better is 21...e4!? 22.Be4 Nc4+/–) 22.Raf1+– Rf7?? (22...Rg8 23.R1f3 Raf8 24.Kh2+–) 23.R1f3 (23.Rh5!? seems even better 23...Raf8 24.Rh7 Qh7 25.Bh7 Rh7+–) 23...c6? (better is 23...Rg8+–) 24.Rh5 Qg8 (24...Raf8+– the last chance for counterplay) 25.Rf6 Rg7 26.Bh7! Rg3 (26...Rh7 27.Rfh6 Mate attack) 27.Kf2 (27.Kf1 Rg1 28.Ke2 Re1 29.Ke1 Qg1 30.Rf1 Qf1 31.Kf1 Rf8 32.Bf5 Kg8 33.Qg5 Kf7 34.Rh7 Ke8 35.Qe7) 27...Rg2 28.Kf3 Qg3 (28...Rg3 doesn't do any good 29.Ke2 Rg2 30.Rf2 Rf2 31.Qf2 Qg7 32.Bf5 Qh6 33.Rh6 Kg7 34.Rh7 Kf8 35.Bg6 Kg8 36.Qf7) 29.Qg3 Rg3 30.Kg3 Rg8 31.Bg8 Kg7 32.Rff5 Kg8 33.Rhg5 Kh7 34.Rg4 Kh6 35.Kh4 cd5 36.Rh5 1–0. Buczinski,Henryk (2200) – Hlousek,J (2200), corr 3GMM/34, 1996.

13.Bc3 Bc3 14.Nc3 Be6 15.0-0=+.

13.Bc3 Bc3 14.Nc3 Be6 15.Bb5 Qc5 16.Bd3 Nc6 17.a3 Nd4–/+.

11.a3 Bc5 (--> 9.a3 Bc5 10.Nf3 Qd7 11.h3 Kd8).

11.Nc3 Qg7 12.Nd5 Be6 (12...Nge7 13.g4 Na5 14.Ne7 Nc4–/+ (worse is 14...Qe7 15.Be2+=)) 13.0-0-0? (13.Nc7!? Kc7 14.Be6+=) 13...Bd5 (13...Nf4 14.Nf4 Bc4 15.c3–+) 14.ed5–/+ Na5 15.Bf1 Nf4 16.Qh4 Nd5 17.d4 e4 18.Qe4 Qh6 19.Kb1 Ne3 20.Rd3 Nec4 21.Bc1 Qh5 22.g4 (22.Qf4!? Re8 23.a3=) 22...Qb5+= Do you see the mate threat? 23.Rb3 Kd7 (23...Re8 24.Bc4 Qc4–/+ (24...Re4 25.Bb5 Nb3 26.ab3+/–)) 24.c3! Rae8 (24...Bc3 A pinning theme 25.Rb5) 25.Qf5?? (better is 25.Bc4 Nc4 26.Qf4+–) 25...Qf5–+ 26.gf5 Nb3 27.ab3 Ne3 ½–½. Schneider,Fred – Labahn,Wolfgang, corr ICCF TT–4–90, 1991.

12.Nc3 Bc3 13.Bc3 Be6 14.Be6 Qe6 15.d3 Kd7 (15...d5 16.ed5 Qd5 17.Bd2–/+) 16.Bd2 Rag8 17.0-0 Nd8 (17...d5 18.Rab1 de4 19.de4 Qa2 20.Rb7 Qc2 21.Qe3–/+) 18.Nh2 Rf8 (18...Nf7 19.Qe3 Nf4 20.Rf4 ef4 21.Qa7 Qh3 22.Qf2–+) 19.Qe3 Rhg8 (19...Nc6 20.Qf2+=) 20.Qa7 Nh4 (20...Ne7 21.Qa4 b5 22.Qb5 c6 23.Qa4 Qh3 24.Rf2+=) 21.g4 b6 22.c4 (22.Qa4 Nc6=) 22...h5 23.Qa4 Nc6 24.Be1 hg4 (24...Ng6 25.Bg3+=) 25.Bh4= Attacking the backward pawn on f6 25...g3?? (better is 25...gh3 26.Kh1 f5 27.ef5 Rf5+=) 26.Kg2?? (better is 26.Ng4 Rg6 27.Rf5+– (27.Bg3?! Rh8 28.Kg2 Rh3+/–)) 26...gh2–+ 27.Kh2? (better is 27.Bg3–+) 27...Rh8 28.d4 Rh4 (28...ed4 29.Rf4–+) 29.Qc6 Kc6 Decoy theme: c6 (29...Kd8 30.Rf5 Rfh8 31.Qa8 Ke7 32.Qd5 Rh3 33.Kg2–+) 30.d5 Theme: Double Attack 30...Kd7 (30...Kc5 31.de6 Re4 32.Rae1 Re1 33.Re1–+) 31.de6 Ke6 32.Rae1 Ra8 (32...Ra8 33.Rf3 Ra2 34.Kg3 Rh6–+) 0–1. Rohde Jensen,Kristian – Labahn,Wolfgang, corr ICCF TT–4–90, 1991.

12.Nf5 0-0-0 13.Nh6 (13.a3 Bc5 14.Nh6 Na5 15.Ba2 Bd7 16.Nf7 f5 17.Nh8 Rh8 18.Nc3 Rf8=) 13...Na5 14.Bd5 c6 15.Bc6 (15.a3 Bc5 16.Ba2 Bd7= 17.Bc3 b6 18.Nf7 f5=) 15...Be6= 16.Ba4 (16.Bb5 a6 17.a3 Bc5 18.Bf1 Nc6+=) 16...d5 17.Bc3 (17.Rf1 Nf4 18.g3 Nc4+=) 17...Bc3 18.Nc3 de4 19.Ne4 (19.Bb3 Nb3 20.ab3 Nh4=) 19...Rhf8 (19...Rd4 20.Nc5=) 20.d3 b6 (20...f5 21.Ng5 Nf4 22.g3=) 21.0-0 The backward pawn on f6 becomes a target (21.Rf1 Bd5 22.Nf5 Be4 23.de4 Nc4=) 21...Nf4+= 22.g4 Rd4 23.Bb3 Nb3 24.ab3 Rd7 25.Rf3 Bg4 (better is 25...Rc7!?+=) 26.Ng4+/– Rg7 27.Kf2 (better is 27.Kf1!? Rg4 28.Ra7+/–) 27...Rg4= 28.Ra7 Kb8 29.Rh7 Rg2 30.Kf1 Rc2 31.d4 Rfc8 32.Nf6?? (better is 32.de5 Rb2 33.Rc3 Rc3 34.Nc3 Rb3 35.Ne4 Rf3 36.Kg1 fe5 37.Nd6+=) 32...Rc1 33.Kf2 R8c2 34.Kg3 Rg1 35.Kh4 Rh2 (35...Rh2 36.Rh3 Rh3) 0–1. Van Esbroeck,Dirk – Rudbeck,Joergen, corr ICCF TT–4–90–14, 1992.

12.Nf5 Bf5 13.ef5 Nge7 (13...Nge7 14.g4 h5–/+) 0–1. Plock,Joerg – Wikman,Ragnar, corr ICCF V–IX WC, 1990.

12.Nf5 Bf5!? 13.ef5 Nh4–/+.

12.Ng6 hg6 13.Nc3 Bc3 14.Bc3 Ke7 15.Rb1 b6 16.a3 A) 16...Kd7 17.0-0 Raf8 18.Bb5 Rh4 19.d3 Be6 20.Bd2–/+; B) 16...a6 17.Bd5 (17.h4 Be6 18.Bd5 Bd5 19.ed5 Na7 20.Rb4–/+; 17.0-0 Be6 18.Be6 Ke6 19.h3 f5 20.Rbe1–+) 17...Kd7 18.0-0 Raf8 19.Rf2 Be6 20.Bc6–/+; C) 16...Raf8 17.h3 Be6 18.Bb5 Nb8 19.d4 ed4 20.Bd4–/+; D) 16...a5 17.0-0 (17.Bd5 Kd7 18.Bb2 Be6 19.c4 f5 20.0-0–/+; 17.Bb3 Be6 18.Bd5 Kd7 19.0-0 f5 20.h3–+; 17.Bb2 Be6 18.Bd5 Bd5 19.ed5 Na7 20.d3–/+; 17.h3 Be6 18.Bd5 Kd7 19.Bc6 Kc6 20.Rf1–+; 17.Bb5 Na7 18.Bc4 Be6 19.Bd5 Rae8 20.Ke2–/+; 17.d3 Be6 18.Bd5 Kd7 19.Bd2 Bd5 20.ed5–/+) 17...Be6 18.Bd5 Bd5 19.ed5 Na7 20.h3–/+; E) 16...Be6 17.Bb5 Nd8 18.d4 a6 19.Bd3 ed4 20.Bd4–/+.

12.Ng6 hg6 13.Nc3 Bc3 14.Bc3 Ke7 15.Rb1 b6 16.Bd5 Bd7 (16...Kd7 17.0-0 (17.h4 Be6 18.Be6 Ke6 19.Ke2 Rh7 20.d3–+) 17...Raf8 18.Rf2 Ne7 19.Bb3 f5 20.Rbf1–/+) 17.d3 (17.a3 Raf8 18.Ke2 a6 19.h3 Na7 20.Rhe1–/+; 17.h3 Rab8 18.a3 Nd8 19.Bb3 Ne6 20.Rf1–/+; 17.h4 Rab8 18.a3 Rh7 19.g3 g5 20.Ke2–/+; 17.Ke2 Raf8 18.Ke3 f5 19.ef5 gf5 20.h4–/+; 17.0-0 Raf8 18.Rf3 f5 19.ef5 gf5 20.Re1–/+; 17.Kd1 Raf8 18.Ke2 Nd8 19.Ke3 Ne6 20.Bc4–/+) 17...Raf8 (17...Rae8 18.Bd2 Nd4 19.c3 c6 20.cd4–/+) 18.h3 (18.Bd2 Nd4 19.c3 Ne6–/+ 20.Be3–/+) 18...Nd4 19.Kd2 (19.Bd4 ed4 20.Kd2–/+) 19...Ne6 (19...c6 20.Bc4–/+) 20.Be6 (20.Rh2 c6 21.Bb3 Nc5–+; 20.Rhg1–/+) 20...Be6–+ 21.a3 d5 22.ed5 Bd5 23.Rh2 c5 24.Rg1 Rh7 25.Ke2 Ke6 26.Be1 (26.Re1 Rd8–+) 26...c4 27.g4 cd3 28.cd3 Rc8 29.Bd2 Bb7 30.Rc1 (30.Rf1 e4–+) 30...Rch8 31.a4 (31.Be3 Rh3 32.Rh3 Rh3–+) 31...Rh3 32.Rh3 Rh3 33.Rc7 (33.g5 f5–+) 33...Bf3 (33...Bf3 34.Ke1 Bg4 35.Ra7 Kd5–+) 0–1. St_Jean,Benoit – Popstein,Sheila, email 4AMM–06, 1997.

12.Ng6 hg6 13.Nc3 Bc3 14.Bc3 Ke7 15.Rb1 Rab8 A) 16.a3–/+ A1) 16...a6 17.Bd5 (17.h4 b5 18.Bd5 Nd8 19.Kf2 c6 20.Bb3–+) 17...Be6 18.Bc6 bc6 19.Rb8 Rb8 20.Kf2–/+; A2) 16...Kd7 17.0-0 Be6 18.Bb5 Ke7 19.Bc6 bc6 20.Rb8–/+; A3) 16...Be6 17.Bd5 f5 18.Ke2 Nd8 19.h4 c5 20.Be6–/+; B) 16.Bd5 Be6 17.Kf2 (17.a3 f5 18.Ke2 Nd8 19.d3 c6 20.Be6–+; 17.h4 f5 18.a3 a6 19.d3 Bd5 20.ed5–/+; 17.d3 f5 18.Bd2 f4 19.c3 Bd5 20.ed5–/+; 17.Ke2 Kd7 18.Bb3 f5 19.ef5 gf5 20.h4–/+; 17.Bc6 bc6 18.Rb8 Rb8 19.Kf2 d5 20.d4–/+; 17.h3 Kd7 18.Be6 Ke6 19.d3 b5 20.Bd2–/+; 17.a4 Kd7 18.Be6 Ke6 19.h4 f5 20.ef5–+; 17.Rf1 Bd5 18.ed5 Nd4 19.Kf2 Rh4 20.Kg3–+) 17...Bd5 18.ed5 Nd8 19.g4 f5 20.h4–/+; C) 16.a4 C1) 16...a6 17.Bd5 (17.h4 g5 18.Bd5 Nd8 19.h5 Rh5 20.Rh5–+; 17.Rb2 Be6 18.Be6 Ke6 19.h4 f5 20.ef5–+) 17...Be6 18.Bc6 bc6 19.0-0 c5 20.d3–/+; C2) 16...Kd7 17.0-0 Rhf8 18.Bb5 a6 19.Bc6 Kc6 20.d4–/+; C3) 16...Be6 17.Bb5 (17.Bd5 Kd7 18.Be6 Ke6 19.d3 f5 20.ef5–+) 17...d5 18.ed5 Bd5 19.0-0 Rh5 20.Rf2–+; D) 16.Rb2 Be6 17.Bd5 Kd7 18.Be6 Ke6 19.d3 f5 20.ef5–+; E) 16.h4 E1) 16...Nd8 17.Kf2 (17.Ba5 b6 18.d3 Ne6 19.Bd2 Nd4 20.c3–/+; 17.d4 Ne6 18.de5 fe5 19.Bd2 c6 20.a4–/+; 17.d3 Ne6 18.Kf2 c6 19.a4 f5 20.a5–/+) 17...Be6 18.Bb3 a6 19.d3 b5 20.Bd2–/+; E2) 16...Nd4 17.Bd4 ed4 18.Kf2 Bd7 19.Ke2 b5 20.Bb3–/+; E3) 16...Rh7 17.d3 (17.a4 Kd7 18.d3 Be6 19.Be6 Ke6 20.Bd2–/+; 17.Bd5 Nd8 18.d4 c6 19.Bc4 Ne6 20.de5–/+) 17...b6 18.Bd5 Nd4 19.Bd4 ed4 20.g3–/+; E4) 16...a6 17.Kf2 (17.Bd5 Na7 18.d3 c6 19.Bb3 Nb5 20.Bb2–/+; 17.a3 b5 18.Bd5 Nd8 19.Kf2 c6 20.Bb3–+; 17.a4 f5 18.ef5 Bf5 19.d3 b5 20.ab5–/+; 17.Rh2 b5 18.Bb3 b4 19.Bb2 Na5 20.Kf2–+) 17...b5 18.Bd5 b4 19.Bc6 bc3 20.dc3–/+; E5) 16...Kd7 17.d3 (17.Bf7 Ne7 18.d4 g5 19.0-0 gh4 20.Rf6–/+) 17...a6 18.a4 Rh7 19.Kd2 Be6 20.Be6–/+; E6) 16...f5 17.Bd5 (17.ef5 Bf5 18.d3 b5 19.Bd5 b4 20.Bd2–+) 17...fe4 18.Be4 Bf5 19.Bf5 gf5 20.h5–/+. .

10.Nc3 Bc3 11.Bc3 Qf8 (11...Qe8 12.Qh6 (12.Rb1 Nf4 13.Qe8 Re8 14.g3+=) 12...Kd8 13.Rb1 Qf8 14.Qe3 Qg7+=) 12.d4?? (better is 12.g3= Qg7 13.d3 (13.Rb1 Rf8 14.d3 f5+=) 13...Kd8 14.Rf1=) 12…Nf4–+ (12...Nf4 13.Qf7 Qf7 14.Bf7 Kf7–+) 0–1. Roczniak,Jan – Lasak, corr Poland (year?).

10.Nh4 Na5 (-->7.Qh5 g6 8.fg6 Ng6 9.Nf3 Na5 10.Nh4 Ke7).

11.0-0 Qe8 12.Qh6 Bb6 (12...Kd8 13.Nc3 (13.Kh1 Be6 14.Bb3 Kc8 15.Nh4 Bb3+=) 13...Nce7 (13...Qf8 14.Ng5 Qh6 15.Nf7 Ke8+=) 14.Kh1 Bc3 15.Bc3 Qc6+=; 12...Qf8 13.Qe3 Bb6 14.d4 ed4 15.Nd4 Nge5+=) 13.Kh1 Qf8 14.Qf8 Rf8 15.Nc3 Bd7–/+ (15...Na5+=).

11.Nc3= Qf8 12.0-0 Bc3 13.Bc3 Nf4 14.Qh4 Qg7 15.Ne1 Qg4–/+.

11.Nc3= Qf8 12.Nd5 Kd8 13.0-0 Qg7 14.d4 (14.d3 Nce7 15.Nf6 Rf8=) 14...Re8 15.de5 fe5 =.

11.Nc3= Qf8 12.g3 A) 12...f5 13.Nd5 Kd8 14.Rf1 a6 (14...Bd7 15.Nh4 Nge7+/–) 15.Nh4 b5+=; B) 12...Bd7 13.Nd5 Kd8 14.Rf1 Qg7 15.Nh4 Nh4=; C) 12...a6 13.Rf1 Qg7 14.Rb1 Kd8 15.Nd5 Rf8+=; D) 12...Kd8 13.Rf1 Qg7 14.Nd5 Rf8 15.Ne3 Bb6+=.

11.Rf1 Qd7 12.Nc3 (12.h3 Qe8 (12...Kd8 13.Nh4 Qg7 14.Nf5 Bf5 15.Qf5 Rf8+=) 13.g3 Kd8 14.Nc3 Nce7 15.Nh2 Rf8+=) 12...Bc3 13.Bc3 Qg4 14.Qg4 Bg4 15.Rb1 Rhb8 += (15...Rab8+=).

11.Rf1 Qe8 12.g3 Nd8 (12...Qd7 13.Nh4 Qg4 14.Nf5 Bf5 15.Qf5 Qf5=; 12...Kd8 13.Nh4 Nce7 14.Rf6 Qc6 15.Bd3 Rg8=; 12...Nf8 13.Qh4 Qg6 14.Nc3 Bc3 15.Bc3 Be6+=; 12...a6 13.Nc3 Bc3 14.Bc3 Rb8 15.Ng1 Nd4=; 12...Be6 13.Be6 Ke6 14.Nc3 Bc3 15.Bc3 Kd7=; 12...Bd7 13.Ng5 b5 14.Bb3 Qf8 15.Nh7 Qg7+=; 12...Rb8 13.Nc3 Bc3 14.Bc3 b5 15.Bb3 Qd7=) 13.Nh4 Nh4 14.Qh4 Qg6 15.Bc3 Bb6+=.

11.Rf1 Qf8 12.g3 A) 12...Bd7 13.Nc3 Bc3 (13...Qg7 14.Nd5 Kd8 15.Nh4 Nh4=) 14.Bc3 Qg7 15.Rb1 (15.d3 Kd8=) 15...Rhb8=; B) 12...Qg7 13.Nc3 Rf8 14.Nd5 Kd8 15.Ne3 Bb6+=.

11.Nh4 Qe8 12.Rf1 (12.Nf5 Kd8 13.0-0 Nf4 14.Qh4 Bf5 15.Qf6 Ne7–/+) 12...Nf4 (12...Nh4 13.Qh4 Qg6 14.Nc3 Bc3 15.Bc3 Rf8+=) 13.Qh6 Qf8 14.Qf8 Rf8 15.g3 Ne6+=.

13.Rb1 Nf4 14.Qe8 Re8 15.g3 (15.Nh4 Rd8 16.g3 d5 17.gf4 dc4=) 15...Ne6 16.Rf1 Nc5 17.d3+=.

13.g3 Bd7 14.Rb1 A) 14...Rb8 A1) 15.0-0 Nf8 16.Qe8 Be8 (16...Ke8 17.Nh4=) 17.Nh4= (17.d4 Bg6+=); A2) 15.Rf1 Kd8=; A3) 15.Ng5+= Nd4 16.Bd4 (16.Rb2 d5 17.Bd5+=) 16...ed4 17.Bf7= (17.Nf3 Ne5–/+); B) 14...Nd8 15.0-0 Be6 (15...b5 16.Bb3 Ne6 17.Qh6=) 16.Bb5 (16.Be6 Ne6 17.Rb7=) 16...c6 (16...Qg8 17.Kh1 Bc4=) 17.Be2=.

13.g3 Bd7 14.Ng5 Nf4 (better is 14...Nd4 A) 15.Bd4 ed4 16.Nf3 Ne5 17.Qe8 Rae8–/+; B) 15.Ra2 Bc6 (15...fg5?? 16.Qg5 Kf8 17.Qf6 Qf7 18.Qf7; 15...d5 16.Bd5 fg5 17.Qg5 Kd6–/+) 16.Bd4 ed4–/+ 17.Ne6 Ne5–/+; C) 15.Rc1 Bc6+=; 14...Nd8 15.Nf3 Be6 16.Be2 Qa4 17.Bd3–/+) 15.Qf7+/– Qf7 16.Nf7 Be6 (16...Ne6 17.Nh8 Rh8+/–; 16...Ng2 17.Kf2+/–) 17.Nh8 (17.Be6 Ne6 18.Nh8 Rh8+/–) 17...Ng2+= 18.Kf2 Bc4 19.Kg2 Rh8 20.d3 Be6 21.Rhf1 a5 22.Rf2 b6 (22...d5 23.Raf1 de4 24.de4+=) 23.Raf1+/– Rf8 24.Bd2 Nb8 25.Bh6 Rf7 26.a4 Nd7 27.Be3 Rg7 28.c4 Rg6 29.h4 ½–½. Trokenheim,Marek – Holmberg,Rune, corr SSKK 3–83, 1983.

13.g3 Kd8 A) 14.0-0 A1) 14...Be6 15.Be6 Qe6 16.Nh4 Nge7 (16...Qh3 17.Qf5 Qf5+=) 17.Qh6+=; A2) 14...Nce7 15.d3 (15.Nh4 Rf8 16.d3 b5 17.Bb3+=) A21) 15...Qc6 16.Bd2 (16.a4 d5 17.ed5 Qc5+=) 16...d5 17.ed5+=; A22) 15...b5 16.Bb3 a5 17.a4+=; B) 14.Rf1 Be6 15.Be6 (15.Be2 Nce7+=) 15...Qe6 16.Nh4 Qc4 17.Qf3+=; C) 14.Rb1+= C1) 14...Nce7 15.d3 a6 (15...Qc6+=) 16.Bb2 (16.Rf1 b5 17.Bb3 Qc6=) 16...b5 17.Bb3+=; C2) 14...Rb8 15.0-0 Be6 16.Bb3 Bb3 (16...Qd7 17.Nh4=) 17.Rb3+= (17.cb3 Nce7+=); C3) 14...Nd4 15.Bd4 ed4 C31) 16.Qd5 Ne5 17.Ne5+= (17.0-0 Nc4=); C32) 16.0-0 Qe4 17.Bd3+=; C4) 14...a6 15.d3 Nce7 16.Rf1 (16.0-0 b5 17.Bb3 Qc6+=) 16...b5 17.Bb3+=; D) 14.d3 Be6 15.Be6 (15.Nd2 Bc4+=) 15...Qe6 16.Nh4 Kd7 17.Nf5+=.

13.g3 Nd8 A) 14.0-0 Be6 15.Bd3 (15.Be6 Ne6 16.Rf2 Qa4 17.d3+=) 15...Nf7+= (15...a6+=); B) 14.Rf1 B1) 14...Qa4 15.Bd3 Qd7 (15...Nf7+=) 16.Qh6 Ke8 17.Rb1+=; B2) 14...Be6 15.Bd3 a6+= (15...c5+=).

13.g3 Nf8 14.Qh6 Qg6 15.Qe3 Kd8 (15...Be6 16.Nh4 Qg4 17.Be6=) 16.Rb1 Nd7 17.Rf1= (17.Nh4 Qg5+=).

13.Qh6 Kd8 A) 14.0-0 Be6 (14...Nce7 15.d3 b5=) 15.Be6 (15.Bb3 Rg8+=) 15...Qe6 16.Nh4 Rg8 17.Qh7=; B) 14.Rb1 B1) 14...Rb8 15.0-0 (15.d3 Be6+=) 15...Be6 16.Bb3 B11) 16...Bb3 17.Rb3= (17.cb3 Qf7+=); B12) 16...Rg8 17.Kh1+=; B2) 14...Nce7 15.d3 a6 16.0-0 (16.Bd2 b5 17.Bb3 Bg4=) 16...Qc6 17.Bb2+=; B3) 14...a6 B31) 15.d3 Nce7 16.Bd2 (16.Bb2 Nf4 17.g3+=) 16...Qa4 (16...b5 17.Bb3 Qd7=) 17.Rb3+=; B32) 15.Bb3 Qf8+=; B33) 15.0-0 Nce7 16.d3 Qc6 17.Bb2+=; B4) 14...Qf8 15.Qe3 Qg7 16.g3 (16.0-0 Nf4 17.g3 Bh3=) 16...Rf8 17.0-0+=; C) 14.Bb3 Qf8 15.Qe3 Qg7 16.0-0 Nf4 17.g3+=; D) 14.d3 Be6 15.Be6 Qe6 16.0-0 d5 17.Nh4=.

13.g3 a6 A) 14.Rb1 Kd8 (14...Qg7 15.Rf1 Kd8 16.d3 Nge7 17.Bd2 b5=) 15.Rf1 Qg7 16.d3 Nge7 17.Bd2 b5=; B) 14.h3 Qg7 (14...Kd8 15.Rb1 b5 16.Bb3 Qe8 17.d3 Be6=; 14...Qe8 15.0-0 Kd8 16.d4 Bd7 17.Bd5 Kc8=) 15.Rb1 Kd8 16.d3 Nge7 17.g4 b5+=; C) 14.Rf1 Qe8 15.Rb1 Kd8 16.Nh4 Nd4 17.Rb2 b5=; D) 14.d3 Kd8 (14...f5 15.Ng5 Qg7 16.Rf1 h6 17.Nf7 fe4+/–) 15.Rf1 b5 16.Bb3 Qg7 17.Bd2 Qd7=.

13.g3 Rb8 A) 14.Rb1 Bd7 (14...Be6 15.Be6 Ke6 16.d4 Kd7 17.0-0 Qg7=; 14...Kd8 15.Rf1 Qe7 16.Bd5 Qe8 17.Nh4 Nce7+=; 14...Qg7 15.Rf1 Be6 16.Be6 Ke6 17.d4 Kd7=; 14...f5 15.Ng5 Qe8 16.Nf7 Rf8 17.Qh7 Rf7+– 1.47) 15.0-0 Qg7 16.Kh1 Rhf8 17.d4 ed4+=; B) 14.Rf1 Qe8 15.d3 b5 16.Bd5 Kd8 17.Nd2 Nce7=; C) 14.h3 Qe8 (14...Kd8 15.Rb1 Qg7 16.d3 Nge7 17.g4 Qg6=; 14...Qg7 15.Rb1 Kd8 16.d3 Nge7 17.g4 a6=) 15.d3 Kd8 16.Bd2 Nd4 17.Kd1 Bg4+=; D) 14.0-0 Qg7 15.Rab1 Nf4 16.Qh4 h5 17.Ne5 de5–+; E) 14.d3 Kd8 15.Bd2 b5 16.Bd5 Nce7 17.Bb3 c6=.

13.g3 Bd7 14.Rf1 b6 (14...Qg7 15.d3=) 15.Bd5 (15.d3 Qe8=) 15...Qg7 16.d3 (16.Nh4 Nh4 17.Qh4 Raf8=) 16...Raf8 (16...Kd8 17.Ng5 Kc8 18.Ne6 Be6 19.Be6 Kb8 20.Rb1+=) 17.Bd2 h6 18.0-0-0 (18.g4 Kd8 19.h3 Be8 20.Bc6 Bc6+=) 18...a6 (18...Kd8 19.Be3+=) 19.Rf2 (19.g4 Kd8 20.h3 Be8 21.Bc6 Bc6+=) 19...Na7 (19...Kd8 20.Rdf1+=) 20.Rdf1 (20.g4 Nb5=) 20...Nb5 21.Kb2 c5 (21...Kd8 22.Bb7=) 22.Nh4 (22.h3 Nc7 23.Bb3 Kd8=) 22...Nh4 23.Qh4 (worse is 23.gh4 Nc7 24.Bb3 Bh3–/+) 23...Nd4 (23...Nc7 24.Ba2=) 24.c3 Ne6 25.Qh5 (25.Be3 Nc7=) 25...Nc7 26.Bb3 (26.Bb7 Qg4 27.Qg4 Bg4+=) 26...Ne6 (26...Qg4 27.Qg4 Bg4 28.h4+=) 27.Be3 ½–½. Van Esbroeck,Dirk – Gibson,I, corr, 1993.

13.g3 Kd8 14.Rb1 Qg7 (14...Qe7 15.Bd5 Qg7 16.Bc6 bc6 17.d3 Ne7=; 14...Nge7 15.Rf1 Qg7 16.d3 a6 17.Bd2 h6=; 14...a6 15.Rf1 Qg7 16.d3 Nge7 17.Bd2 h6=) 15.Rf1 Rf8 16.d3 f5 17.Bd2 f4+=.

13.g3 Kd8 14.Rf1 Qe7 15.d3 Be6+=.

13.g3 Be6 14.Be6 Ke6 15.Rb1 Rb8 16.d4 Kd7 17.0-0 Qg7 =.

13.g3 Qe8 A) 14.Rb1 Kd8 (14...a6 15.0-0 Nf8 16.Qh4 Qg6 17.d4 Nd7=) 15.Rf1 Nce7 16.d3 Qd7 17.Nd2 f5=; B) 14.0-0 Nf8 (14...Nd8 15.Nh4 Nh4 16.Qh4 Qg6 17.d4 Nc6=; 14...a6 15.Rab1 Nf8 16.Qh6 Qg6 17.Qe3 Kd8=) 15.Qh4 Qg6 16.Rab1 Ne6 17.d3 Ng5=.

13.g3 f5 14.Ng5 Qe8 (14...Qg7 15.Rf1 h6 16.Nf7 fe4 17.Nh8 Nh8+/–) 15.Nf7 fe4 16.Nh8 Qh8 17.Bd5 e3 +/–.

13.g3 Qg7 14.Rb1 Kd8 (14...Rf8 15.d3 f5 16.Bd2 f4 17.Rg1 Kd8=) 15.Rf1 Rf8 16.d3 f5 17.Ng5 fe4+=.

13.g3 Qg7 14.Rf1 Kd8 15.d3 Nge7 16.Rb1 a6 17.Bd2 Qg6 =.

13.g3 Qg7 14.Rf1 Nd8 15.d4 (15.d3 Be6 16.Be6 Ne6= 17.Rb1 Rab8=; 15.Rb1 c6 16.Kd1 b5 17.Bb3 Ne6=) 15...Be6 (15...ed4 16.Bd4 (16.Nd4 Ne5 17.Qh4 Rf8=) 16...Nc6 17.0-0-0= (17.c3 Nce5+=) 17...Nd4=) 16.Nd2 (16.d5 Bf7 17.Qg4 (17.Qf5 c6=) 17...Ke8=) 16...Bc4 (16...ed4 17.Bd4 Ne5 18.Qh4+=) 17.Nc4= Rf8 (17...Ne6 18.Rb1=; 17...Ke8=) 18.Ne3 Ke8 19.de5 (19.d5!?+=) 19...fe5+= 20.Rf8 Kf8 (worse is 20...Qf8 21.Qh7 Ne7 22.Nf5+=) 21.0-0-0 Kg8 (21...Ke8 22.Nf5 Qg8 23.Bd2+=) 22.Rf1 (22.Nf5 Qf6=) 22...Ne6 (22...Kh8 23.Nf5 Qd7 24.Qg5=) 23.Nf5= Qd7 (better is 23...Rf8=) 24.Nh6+/– Kh8? (better is 24...Kg7 25.Rf7 Qf7 26.Nf7 Kf7 27.Qh7 Kf6+/–) 25.Rf7+– Qe8 (25...Ng7 26.Qg6 hg6 27.Rd7 Ne8+–) 26.Qf5 (26.Qf5 Ng7 27.Qf6+–) 1–0. Roczniak,Jan – Rudek, corr Poland, 1985.

13.g3 Qg7 14.Rf1 Rf8 15.d4+= (15.Nh4 Nh4 16.Qh4 h5 17.h3 Qg5+=) 15...ed4 16.Nd4 Nd4 17.Bd4 Ne5+=.

10.0-0 Na5 A) 11.Bb5 c6 12.Nh4 Rg8 13.Be2 Bc5 14.Kh1 Qf7 15.Bc3 Bb6 16.Nf5+=; B) 11.Bd5 Bc5 (11...c6 12.Nh4 Qg7 13.Bb3 Nb3 14.ab3 Bc5 15.Kh1 Qf7 16.Ng6+=) 12.Kh1 c6 13.Bb3 Nb3 14.ab3 Kd8 15.Ba3 Nf4 16.Qh6–/+; C) 11.Nh4 Qg7 (11...Nc4 12.Ng6 Qf7 13.Rf6 Qf6 14.Ne5 Ke7 15.Nc4 Bc5 16.Qc5+=) 12.Bb5 c6 13.Be2 d5 14.Nf5 Qc7 15.d4 de4 16.Nc3+=.

10.0-0 Bc5 11.Kh1–/+ Kd8 (11...Be6 12.Be6 Qe6 13.Nh4 Qf7 14.Ng6 Qg6 15.Qg6 hg6 16.Rf6+=) 12.Nc3 Nf4 13.Qh6 Na5 14.Bd5 Qf8 15.Qf8 Rf8 16.Na4–/+.

10.0-0 Bd7 11.c3 (11.Nh4 0-0-0 12.Nf5 Bf5 13.Qf5 Kb8 14.Bd5 Bc5 15.Kh1 Nd4 16.Bd4+=) 11...Bc5 (11...Na5 12.Bb3 Nb3 13.ab3 Bc5 14.d4 Bb6 15.Nbd2 Kd8 16.Nc4+=) 12.d4 Bb6 (12...ed4 13.cd4 Nce5 14.Nh4 Nc4 15.Ng6 Qf7 16.Rf6=) 13.Na3 (13.Nbd2!?+= 0-0-0 14.Kh1 f5 15.ef5 Nf4 16.Qg5=; 13.Nh4 ed4 14.Ng6 Bg4 15.Ne7 Bh5 16.Kh1–+) 13...0-0-0–/+ 14.Kh1 (14.Rae1 Qg7 15.Nh4 ed4 16.Nf5–+) 14...Nf4 (14...ed4 15.cd4 Qe4 16.Rae1–/+) 15.Qh6+= Na5 (15...f5 16.ef5+=) 16.g3 (16.Bc1+=) 16...Nc4 17.Nc4 Bb5?? (better is 17...Nd3 18.Qd2 Nb2 19.Nb6 ab6 20.Qb2 ed4 21.cd4 Qe4–/+) 18.Nb6+= ab6 19.gf4 Bf1 20.Rf1 Rdg8? (better is 20...ed4!? 21.Qh3 Kb8+=) 21.Qh3 Kb8 22.de5 fe5 23.fe5 de5 24.c4 Rf8 25.Be5 (25.Ne5!? Rf1 26.Qf1 Rd8+–) 25...Rf3+/– 26.Bc7 (worse is 26.Rf3 Qe5 27.Qf5 Qa1 28.Rf1 Qa2+=; 26.Qf3?! Qe5 27.Qf5 Qd4=) 26...Qc7 27.Qf3 Qc4 28.Qf4 Ka7 29.Rf2 (better is 29.Re1!?+/–) 29...Re8+= The isolani on e4 becomes a target 30.e5 Qf4 31.Rf4 Re5 32.Ra4 (32.Kg2!?+=) 32...Ra5–/+ 33.Rh4 Ra2 34.Rh7 b5 35.h4?? (better is 35.Rh4–/+) 35...b4–+ 36.h5 (36.Re7 Ra1 37.Kg2–+) 36...b3 37.h6 b2 38.Rb7 (38.Kg2 b1Q 39.Kg3 Qe1 40.Kg4 Rg2 41.Kf4 Rf2 42.Kg5 Qg1 43.Kh5 Rh2#) 38...Kb7 39.h7 b1Q# 0–1. vhilts (2500) – fitahiana (2620), net–chess.com, 2012.

10.0-0 Kd8 A) 11.Kh1 Nf4 (11...Na5 12.Bb5 Nf4 13.Qh6 a6 14.Ba4 Nc4 15.Bc3 Bc3 16.Nc3–/+) 12.Qh4 Na5 13.Bb5 a6 14.Ba4 Rg8 15.Ne1 Nc4 16.Bc1–+; B) 11.c3 Ba5 (11...Qg7 12.Ng5 fg5 13.Qg5 Qe7 14.Qe7 Nge7 15.cb4 Nb4 16.a3+=) 12.Bc1 Bb6 13.Kh1 Nf4 14.Qh6 Na5 15.Bb5 c6 16.Ba4–+; C) 11.a3 Qg7 (11...Bc5 12.Kh1 Rf8 13.Nc3 Nf4 14.Qh6 f5 15.Nd5 Nd5 16.ed5–/+) 12.Ne1 Bc5 13.Kh1 Nf4 14.Qh4 Rf8 15.g3 Na5 16.Ba2–/+.

10.0-0 Qg7 A) 11.Kh1 Kd8 12.g3 Nge7 13.c3 Bc5 14.Qh4 h5 15.Ne1 Rf8 16.Nd3–+; B) 11.d3 Na5 (11...Bc5 12.Kh1 Na5 13.Bd5 c6 14.Bb3 Nb3 15.ab3 Kd8 16.Bc1–/+) 12.Bd5 c6 13.Bb3 Nb3 14.ab3 Kd8 15.Bc1 Rg8 16.Bh6–/+; C) 11.Nh4 Na5 (11...Bc5 12.Kh1 Kd8 13.Nf5 Bf5 14.Qf5 Rf8 15.Qg4 Rb8 16.d3+=) 12.Bb5 c6 13.Be2 d5 14.Nf5 Qc7 15.d4 de4 16.Nc3+=.

10.Nh4 Na5?? 11.Ng6+– hg6 (11...Bg4 12.Qg4 (12.Ne7?! Bh5 13.Be2 Be2+–) 12...hg6 13.Qg6 Kd7 14.Qf5 Kd8 15.Be2+–) 12.Qh8 Kd7 (12...Qf8 13.Qf8 Kf8 14.Be2+–) 13.Bd3 c6 (13...b5 14.Nc3 c6 15.0-0+–) 14.Bc3 Bc3 15.Nc3 Kc7 (15...b5 16.0-0 Bb7 17.Qf6+–) 16.0-0 f5 (16...Rb8 17.Qf6 Qh7 18.Qf7 Qf7 19.Rf7 Bd7 20.Raf1+–) 17.ef5 gf5 18.Bf5 Qg5 (18...Rb8 19.Qh5 Bf5 20.Rf5 Qe6 21.Rf7 Kb6+–) 19.Qh7 Kb6 (19...Qg7 20.Qg7 Kb6 21.Rab1 Ka6 22.Bd3 Nc4 23.Qc7 d5 24.Bc4 dc4 25.Rb4 b5 26.Qc6 Ka5 27.Rb5) 20.Rab1 Ka6 21.Bc8 Rc8 (21...Qg2 22.Kg2 Rc8 23.Qd3 b5 24.Nb5 Rg8 25.Kh1 Rg1 26.Rg1 Kb6 27.Nd6 Nb3 28.Rb3 Kc7 29.Rg7 Kd8 30.Rb8) 22.Qd3 b5 (22...Nc4 23.Qc4 b5 24.Nb5 Qg2 25.Kg2 Ka5 26.Qb4 Kb6 27.Nd6 Kc7 28.Rf7 Kd8 29.Qh4) 23.Nb5! (23.Nb5 Qg2 24.Kg2 Rg8 25.Kh1 Rg1 26.Rg1 Kb6 27.Nd6 Nb3 28.Rb3 Ka5 29.Rb7 a6 30.Qa3) 1–0. Pierre – Morbyn, internet, 2020.

10.Nh4 Rf8 11.Ng6= hg6 12.Qg6 Kd8 13.Nc3 (13.a3 Bc5=) 13...Bc3 (13...Nd4 14.Rc1 f5 15.h4 Bc3 16.Bc3 fe4 17.h5–/+) 14.Bc3= Be6 (14...f5 15.h4=) 15.Be6 Qe6 16.0-0 Qe7 (16...Qe7 17.Qf5 d5+=; 16...Ne7 17.Qg7 Kd7 18.Rf5+=). Marks – Kleindl,Paul, corr SOK–88–28, 1989.

12.ef5+/– 0-0-0 13.fg6 hg6 14.Qg4 Kb8 15.Bd5 f5 16.Qc4+/– Qd7 17.Bc6 Qc6 18.Qc6 bc6 19.a3 +/–.

12.ef5+/– 0-0-0 13.fg6 hg6 14.Qg4 Kb8 15.Bb5 f5 16.Qc4 Qg8 17.Qb3 Qb3 18.ab3 Nd4 19.Bd4 +/–.

12.ef5+/– 0-0-0 13.fg6 hg6 14.Qg4 Kb8 15.Qf3 A) 15...f5 16.Bd5 Qd7 17.a3 Bc5 18.Bc6 Qc6 19.Qc6+/–; B) 15...Na5 16.Be6 (16.Be2 d5 17.a3 Bc5 18.Nc3 e4 19.Qf1+=; 16.Bb3 Rh4 17.Nc3 c6 18.Qg3 Rdh8 19.Ne2+=; 16.Bf1 d5 17.a3 Bc5 18.Nc3 e4 19.Qg4+=; 16.Bd5 c6 17.a3 Bc5 18.Bc3 Bb6 19.Be6+=) 16...Qe7 17.Bd5 c6 18.Qg4 Bc5 19.Bf3+/–; C) 15...Bc5 16.Bd5 (16.Nc3 Rh4 17.Bb3 Nd4 18.Qd3 Qh6 19.h3+=) 16...Nb4 17.Bb3 Nc6 18.Nc3 Nd4 19.Qd3+=.

12.ef5+/– 0-0-0 13.fg6 hg6 14.Qg4 f5 15.Be6+– Kb8 16.Bf5! 1–0. Grehl,Siegfried – Schmitz, corr, 1988.

12.Qf5? Nf4 13.Bb5 Qg2–+.

12.0-0 Bc5 13.Kh1 (13.Ne3 Na5 A) 14.Be2 Qf7 (14...Be6 15.Nc3 Qf7 16.Na4 Be3 17.de3 Nc4 18.Bc4 Bc4 19.Rf2 Rf8) 15.Nc3 Nf4 16.Qh4 Ne2 17.Ne2 Nc4 18.Rf6 Ne3 19.de3 Be3; B) 14.Bd3 Qf7 (14...Be6 15.Nc3 Qf7 16.Na4 Be3 17.de3 Nc4 18.Rf3 Nb2 19.Nb2 Nf8) 15.Nc3 Nf4 16.Qf7 Kf7 17.Ncd5 Nd5 18.ed5 b5 19.Bb5 Rb8; C) 14.Bd5 c6 (14...Bd7 15.Ba3 c6 16.Bc5 dc5 17.Bb3 0-0-0 18.Nc3 Nf4 19.Qh4 Qd6) 15.Nc3 cd5 16.Ncd5 Qg7 17.Rf6 Nc4 18.Bc3 Ne3 19.de3 Rf8; D) 14.Bb5 c6 15.Be2 Be6 16.Nc3 0-0-0 17.Bg4 Qf7 18.Rab1 Nc4 19.Bc1 Bg4) 13...Bd7 14.Nh6 (better is 14.Nc3 0-0-0 15.g3= Nd4 16.Nd4 Bd4 17.a4 Ne7 18.Rab1 Bc6 19.Nd5 Bb2; 14.g3 0-0-0 (14...Nd4 15.Nc3 0-0-0 16.Ne3 c6 17.Na4 Be6 18.Be6 Ne6 19.Ng4 Qe7; 14...Nb4 15.Bb3 0-0-0 16.Nc3 Kb8 17.d3 a6 18.Rab1 Be8 19.Qf3 h5) 15.Nc3 Nd4 16.Nd4 Bd4 17.a4 Ne7 18.Rab1 Bb6 19.Qh4 Ng6) 14...Nd8?? (better is 14...0-0-0 15.g3 (15.Nf7 Na5 16.Bd5 c6 17.Nh8 Qh8 18.Bf7 Qg7 19.Bc3 Qf7) 15...Na5= 16.Bf7 Qg7 17.Nc3 Rdf8 18.Bd5 Ne7 19.Bf7 a6; 14...Qg7 15.Nc3 0-0-0 16.Nd5 Be6 17.Nf5 Qf7 18.Bb3 Bd5 19.ed5 Na5) 15.Nc3 c6 16.Rf3 (16.Ng4!? Bg4 17.Qg4+/–) 16...Be6 (16...b5 17.Bb3 Ne6 18.Be6 Be6 19.a4=) 17.Bb3 Bb3 18.ab3 Ne6 (18...Ne6 19.Na4 Kd8+=). Plock,Joerg – Ebeling, corr, 1991.

12.0-0 Nce7 13.Nc3+– Bc3 14.Bc3 Bd7 15.Nh6 d5 (15...Qg7!?+–) 16.Be5+– dc4 (16...0-0-0 17.Rf6 Qe8 18.ed5 Nd5 19.Bd5 Qe5 20.Qe5 Ne5+–) 17.Rf6 Qg7 (17...Qh6 18.Qh6 Ne5+–) 18.Bc3 Bg4 (18...0-0-0 19.Rf7 Nf4 20.Bg7 Nh5 21.Bh8 Ng6+–) 19.Ng4 (19.Qg4?! Qh6 20.Raf1 Rf8+–) 19...0-0-0 20.Qa5 (better 20.Rb1 Qg8 21.Nh6+–) 20...Rhf8 (20...h5 21.Qa7 Qh7 22.Ne3+–) 21.Qa7 h5 (21...Rf6 22.Qa8 Kd7 23.Qa4 Kc8 24.Nf6 Nc6+–) 22.Rb1 Rf6 (22...Rd2 23.Rd6 Rd6 24.Bg7 hg4 25.Qa8 Kd7 26.Bf8 b6+–) 23.Nf6 (23.Nf6 Qf6 24.Qb7 Kd7 25.Bf6+–) 1–0. Pierre – Panter, internet, 2019.

12.Nc3 Na5 13.Bb5 Kd8 =.

12.Nc3 Bc3!? 13.Bc3 Bd7+=.

12.Nc3 Nce7 =.

12.Nh6 Na5 13.Bf7 Ke7 14.0-0 Qg7 (14...Nf4!? 15.Qh4 Qg7+=) 15.Nc3 (15.c3!? Bc5 16.d4=) 15...Bc5 (15...c6!?–/+) ½–½. 144) Metz,F – Knudsen,John C, corr WCCF CZE–1, 1990.

12.Nh6 Bc5 13.Rf1 A) 13...Nb4 14.Na3 (14.Kd1 Qg7 15.Nf5 Qd7 16.Nc3 c6 17.Na4=; 14.Bb3 Ke7 15.a3 Na6 16.Nc3 c6 17.Ne2=) 14...a6 15.Nf7 Rg8 16.Rf6 Qe7 17.Qh7+=; B) 13...Bd7 14.Nf7 Rg8 15.Ng5 fg5 16.Rf8 Rf8 17.Nc3+=.

12.Nh6 Kd7 13.Nf7 Rg8 14.Qh3 (14.Qh7 Rg7 15.Qh6 Na5 16.Bd5 c6 17.Bb3–+) 14...Ke8 15.Qb3 Nge7 16.c3 Bc5 17.Ba3–+.

12.Nh6 Ke7 13.g3+= Na5 14.Bf7 Qg7 15.Nc3 c6 16.a3 Bc5 17.Na4 =.

13.c3 0-0-0?? 14.cb4+– Nb4 (14...Nf4 15.Rf4 ef4 16.Nc3 Nb4 17.Rb1+–) 15.a3 Nc6 (15...Nc2 16.Ra2 Nf4 17.Rf4 ef4 18.Bb3+–) 16.g3 Kb8 (16...Nge7 17.Ne7 Qe7 18.Nc3+–) 17.Nc3 Na5 (17...Nge7 18.Ne3+–) 18.Ba2 Bf5 (18...Nc6 19.Nd5+–) 19.Qf5 (19.ef5?! Ne7+–) 19...c6 (19...Nc6 20.Nd5+–) 20.Rad1 (20.Rac1 Qg7+–) 20...Qe7 21.Rf2 (21.Qf6 Qc7 22.d4 Rhf8+–) 21...Rhf8 22.d4 c5 (22...ed4 23.Rd4 Ne5 24.Ra4+–) 23.dc5 (23.Nd5 Qg7 24.dc5 dc5+–) 23...dc5 24.Nd5 Qd7 25.Rdf1 Qf5 26.ef5 Nh8 (26...c4 27.fg6 Rd5 28.gh7+–) 27.Nf6! Ka8 (27...Rf6 Decoy to f6 28.Be5 A double attack) 28.Nh7 Rfe8 29.h4 (29.Ng5!? c4 30.Ne6 Rc8 31.Be5 Nf7 32.Nc7 Kb8 33.Ne8 Ne5+–) 29...c4 30.Nf6 Re7 31.g4 Rd3 (31...b5 32.g5+–) 32.g5 Rg3 (32...e4 33.Rg2 e3 34.Bb1+–) 33.Kh2 Re3 (33...Rd3+–) 34.Nd5 (34.Nd5 Ra3 35.Ba3+–) 1–0. pierreo – Super Frank, ChessWorld.net, 2005.

13.c3 Ba5 14.Bc1 A) 14...0-0-0 A1) 15.d4 Bb6 (15...ed4 16.cd4 Bb6 17.Be3 Nge7 18.Bh6 Qe8 19.Bf7 Nf5 20.Be8 Bd4; 15...Qe8 16.Ng7 Qe7 17.Nf5 Bf5 18.Qf5 Kb8 19.Be3 Bb6 20.Qf2 Rhf8; 15...Bf5 16.Qf5 Kb8 17.d5 Bb6 18.Kh1 Na5 19.Be2 Qg7 20.Na3 Rhf8) 16.Be3 ed4 17.cd4 Nge7 18.Bh6 Qe8 19.Bf7 Nf5 20.Be8 Bd4; A2) 15.d3 Qe8 (15...Bb6 16.Kh1 Na5 17.Bh6 Qe8 18.Nd2 Nf4 19.Qe8 Rde8 20.Bf4 Nc4; 15...Nf4 16.Bf4 ef4 17.d4 Qe8 18.Qe8 Rhe8 19.Rf4 Bf5 20.ef5 d5) 16.Ng7 Bb6 17.Kh1 Qf8 18.Nf5 Nce7 19.Bh6 Qe8 20.Ng7 Nf4; B) 14...Bb6 15.Kh1 (15.d4 0-0-0 16.Be3 ed4 17.cd4 Nge7 18.Bh6 Qe8 19.Bf7 Nf5 20.Be8 Bd4) 15...0-0-0 16.d3 Qe8 17.Na3 Bc5 18.g3 Na5 19.Ng7 Qe7 20.Nf5 Bf5.

13.c3 Ba5 14.d4 A) 14...Bb6 A1) 15.Rf2 0-0-0 16.Nd2 Nf4 17.Rf4 ef4 18.Qg4 Ne5 19.Qf4 Kb8 20.Be2 Rg8; A2) 15.Rf3 0-0-0 (15...ed4 16.cd4 Nce5 17.Nd2 Nf3 18.Nf3 0-0-0 19.a4 d5 20.Ba3 Qe8) 16.Nd2 Nf4 17.Rf4 ef4 18.Rf1 Ne5 19.Rf4 Kb8 20.Rf2 Nc4; A3) 15.Nd2 0-0-0 16.a4 Kb8 17.Bd5 Bf5 18.a5 Nf4 19.Rf4 Bg6 20.Qh4 ef4; A4) 15.a4 0-0-0 16.Nd2 Kb8 17.Nb3 a5 18.g3 ed4 19.cd4 Nge5 20.Ne3 Nb4; A5) 15.Na3 0-0-0 16.Qf3 Nge7 17.Ne7 Qe7 18.Rad1 Rde8 19.Bd5 ed4 20.cd4 Nb4; B) 14...0-0-0 B1) 15.Bc1 Qe8 (15...ed4 16.cd4 Bb6 17.Be3 Nge7 18.Bh6 Qe8 19.Bf7 Nf5 20.Be8 Bd4; 15...Bf5 16.Qf5 Kb8 17.Be3 Bb6 18.Qf2 Nge7 19.Be6 d5 20.de5 Be3; 15...Bb6 16.Be3 ed4 17.cd4 Nge7 18.Bh6 Qe8 19.Bf7 Nf5 20.Be8 Bd4) 16.Ng7 Qe7 17.Nf5 Bf5 18.Qf5 Kb8 19.Be3 Bb6 20.Qf2 Rhf8; B2) 15.g3 Nge7 (15...Bb6 16.Nd2 Nge7 17.Qh4 Nf5 18.ef5 Kb8 19.Rab1 Qg7 20.Bd5 Ne7) 16.Nh6 Be8 17.Qh4 Ng6 18.Qh3 Bd7 19.Be6 ed4 20.cd4 Qe7; B3) 15.Nd2 Kb8 (15...ed4 16.Nd4 d5 17.Nc6 Bc6 18.Bd5 Qc5 19.Kh1 Bd5 20.Nb3 Qc4; 15...a6 16.Nb3 Nf4 17.Rf4 ef4 18.Qg4 Bb6 19.Qf4 Ne5 20.Nd2 Kb8; 15...Bb6 16.a4 Nf4 17.Rf4 ef4 18.Qg4 Kb8 19.Qf4 Qe8 20.Ne3 Na5) 16.Nb3 Nf4 17.Qf3 Bf5 18.ef5 Qg7 19.Bb5 Rhg8 20.Rf2 Bb6.

13.c3 Ba5 14.Ne3+= Bb6 A) 15.d4 ed4 16.cd4 0-0-0 17.Nc2 Qe7 18.Rf2 Qe4 19.Nc3 Qh4 20.Qh4 Nh4; B) 15.g3 0-0-0 (15...Qg7 16.Kh1 0-0-0 17.Nf5 Qf8 18.Na3 Nce7 19.Ne7 Ne7 20.d4 Qg7; 15...Na5 16.Bd3 0-0-0 17.Na3 Be6 18.c4 Qf7 19.Rac1 Nc6 20.Nac2 Bc4; 15...Qe7 16.Na3 Be3 17.de3 0-0-0 18.Rf2 Be6 19.Raf1 Rdf8 20.Bb5 Na5) 16.Na3 Qg7 17.Kh1 Be3 18.de3 Nge7 19.Qh4 f5 20.Rf2 Rhf8; C) 15.Na3 0-0-0 16.g3 Qg7 17.Qf3 Rhf8 18.Kh1 Nge7 19.Bb3 f5 20.ef5 Nf5; D) 15.Kh1 Na5 (15...0-0-0 16.Nd5 Qg7 17.d4 Rhf8 18.Rf3 ed4 19.Nb6 ab6 20.cd4 f5) 16.Bd3 c6 17.g3 0-0-0 18.Ng4 Qg7 19.Ne3 Be6 20.Na3 Kb8.

13.c3 Ba5 14.Nh6 Nd8?? (better is 14...0-0-0 15.Nf7 Bb6 16.Kh1 Na5–/+ 17.Bd5 c6 18.Rf6 Qe7 19.Qg5 Nf4 20.Nd6 Kb8; 14...Bb6 15.Kh1 0-0-0 16.Nf7 Na5 17.Bd5 c6 18.Nh8 Qh8 19.Bf7 Qg7 20.Bg6 hg6) 15.Ng4+= Bg4 16.Qg4 Qe7 17.d4 Rf8 18.Na3 Qd7 19.Qh5 Ne6 20.Be6 Qe6 21.Qh7 Nf4 22.Rf4 ef4 23.Qh5 Rf7 (23...Kd8!? 24.Qa5 Qe4+=) 24.Qa5+= Qe4 25.Qh5 0-0-0?? (better is 25...Ke7 26.Qh4 Rh7+=) 26.Qf7+– f3 27.Qg7 (27.Rb1 Qe3 28.Kh1 Re8 29.gf3 Qf3 30.Kg1 Qg4 31.Kf1 Rg8 32.Qg8 Qg8+=) 27...Qe3 28.Kh1 f2 29.Qg4 (29.Qf6?? Qe1 30.Re1 fe1Q 31.Qf1 Qf1) 29...Kb8 30.Rf1?? (30.Nc2 Qd3 31.Qd1 f1Q 32.Qf1 Qc2 33.Qc1+– (33.Qf6?! Rg8 34.Qf3 Qb2+=)) 30...Re8?? (better is 30...Qe1 31.Qd1 Re8+–) 31.g3+– 1–0. Gerold – Fauth, corr, 1996.

13.Nh6 0-0-0 14.Nf7 A) 14...Na5 15.Bd5 Bc5 16.Kh1 Bb5 17.Rf6 Qe7 18.Rf3+–; B) 14...Nf4 15.Qh4 (15.Rf4 ef4 16.Bf6 Bc5 17.Kf1 Rg8 18.Bb2–+) 15...Na5 16.Bd5 Nd5 17.Nd8 Bc5 18.d4–/+; C) 14...Bc5 15.Kh1 Nf4 16.Rf4 ef4 17.Bf6 Re8 18.Bh8–/+.

13.Nh6 Bc5 14.Kh1+= Nb4 15.Na3 Qg7 16.Nf5 Qf8 17.c3 Nc6 18.d4 =.

13.Nh6 Nd8 14.Nf7 (14.c3 Ba5= (14...Bc5 15.d4 Bb6 16.Ng4 Bg4 17.Qg4 Nc6 18.Bb5=) 15.Ng4 (15.Nf7 Bb6 16.Kh1 Nf7 17.Rf6 Nf4 18.Bf7+=) 15...Bg4 16.Qg4 Bb6 17.Kh1 Nc6 18.g3=) 14...Nf7 (14...Bc5 15.Kh1 Nf7 16.Rf6 0-0-0 17.Rf7 Qe8 18.Nc3=) 15.Rf6 0-0-0 16.Rf7 (16.Bf7? Qg7 17.Rf1 Rdf8 18.Bg6 Rf1 (18...Qg6?! 19.Qg6 hg6 20.Rf8 Rf8 21.d4–/+) 19.Kf1 hg6–+ (19...Qg6?! 20.Qg6 hg6 21.c3–/+)) 16...Qe8 17.Rh7 (17.Rg7 Nf4 18.Qe8+=) 17...Rh7 18.Qh7 Be6 19.Ba3 (19.Bb3 Rd7 20.Qh6 Rf7=) 19...Ba5 (19...Bc4 20.Bb4 Nf4 21.Nc3–/+) 20.Bb3 Bb6 21.Kh1 Bb3 (21...Bd4 22.c3 Bb3 23.cd4–/+) 22.ab3= Qe6 23.Qh5 (23.Nc3 Rh8 24.Qg7 Qg4+=) 23...Rh8 (23...Rf8 24.Nc3 Bd4 25.Rd1+=) 24.Qf5= Qf5 25.ef5 Nh4 26.g4 Nf3 27.Kg2 (27.h3=) 27...Nh2 (better is 27...Ne1!? 28.Kg3 Nc2=) 28.g5+= Ng4 29.Nc3 (29.f6 Rf8+/–) 29...Rg8 (better is 29...Rh5!? 30.Ne4 Nf2=) 30.g6+/– Nf6 (30...Bd4 31.Bb2+/–) 31.Rh1 Kd7 32.Kf3 d5 (32...Ba5+/–) 33.Nd5 (better is 33.Na4!?+–) 33...Nd5+= 34.Ke4 c6 35.c4 (35.Rh7 Kc8 36.Rf7 Bd8+=) 35...Nf6 36.Ke5 Bd8 37.Bb2 Ng4 (37...Ke7!?+=) 38.Kf4+/– Nf6 39.Rh7 Kc8 40.Rf7 (40.Rf7 Nd7 41.Kg4+/–) 1–0. Gatic,P – Vucicevic,M, corr Yugoslavia, 1975.

14.d4 Bb6 15.Na3 0-0-0 16.g3 (16.Bd5 Nf4 17.Rf4 ef4–/+ 18.Nc4 Ne7 19.Ne7 Qe7 20.Bc1 c6 21.Qf7–/+; 16.Qf3 Nf4 17.Ne3 Re8 18.Kh1 Na5 19.g3 ed4 20.cd4 Nh3 21.Bb5+=; 16.Bb5 Nf4 17.Rf4 ef4 18.Nc4 Ne7 19.Bd7 Kd7 20.Qh3 Ke8 21.Nb6+=; 16.Ne3 ed4 (16...Nf4 17.Qf3 Re8 18.Kh1 Na5 19.g3 ed4 20.cd4 Nh3 21.Bb5+=) 17.cd4 Nd4 18.Nd5 Bc5 19.Kh1 Ne5 20.Nf6 Qe7 21.Bd5–/+) 16...ed4 (16...Nge7!? 17.Nc2 Bf5 18.ef5 d5–/+ 19.Bb5 Qe8 20.Qh3 Qf7 21.Rab1–/+) 17.cd4 Re8 (17...Nge7 18.Rf4 Nf5 19.ef5 Qe8 20.Qh4 Nb4 21.Re4+=) 18.Rae1 Nce5 (18...Nge7 19.Ne7 Qe7 20.Nc2+= Rhf8 21.Bd5+=) 19.Re3 (19.Kh1 Nc4 20.Nc4 Kd8= 21.h3=) 19...Nf7 (19...Kd8 20.Bd5 (20.Qe2= Nc4 21.Nc4+=) 20...Bf5 21.ef5=; 19...Kb8 20.Re2 Bf5 21.Qf5=) 20.h4 (20.Bd5!?+= Ng5 21.Nc4=) 20...Bc6 (20...Nfe5 21.de5=) 21.Kh2 (21.Qf3!?=) 21...Re4–/+ 22.Re4 Be4 23.Nb5 (23.Qg4!? d5 24.Bd5 Bd5 25.Ne7 Kb8 26.Nd5=) 23...Kb8 24.Ne3 a6 (24...Nh6 25.Qe2 Qg7 26.h5–+) 25.Rf6–/+ Qh6 (25...ab5 26.Rf7 Qe8 27.Bb3–/+ (27.Qb5? Bc6 28.Qb3 d5 29.Bd5 Bd5 30.Qd5 Qe3–+)) 26.Qe2 (26.Qh6 Nh6 27.Na3 d5–/+) 26...ab5 (better is 26...Nfe5!? 27.de5 A) worse is 27...Be3 28.Nc7 Rf8 29.ed6+–; B) 27...ab5 28.Ng4 Qh5 29.Qe4 (worse is 29.Bb5 Nh4 30.Qe4 Nf3 31.Kg2 Ng5–/+) 29...bc4 30.ed6 Nh4 31.Rh6+/– (worse is 31.gh4 Qh4 32.Kg2 Rg8–/+); C) 27...Qe3 28.Qe3 Be3 29.ed6 ab5 30.Rg6 hg6 (worse is 30...bc4 31.Bh8 cd6 32.Rd6+/–) 31.Bh8 cd6 (31...bc4 32.d7 Ka7 33.d8Q+–) 32.Bb5 d5+=) 27.Bf7+= ½–½. (143) Van Esbroeck,Dirk – Ivanchik,SI, ICCF World Cup8–9, 1993.

14.d4 Bb6 15.Nd2 0-0-0 =.

14.d4 Bb6 15.Bd5 0-0-0 16.Qf3 Nge7=+.

14.d4 Bb6 15.Kh1 0-0-0 16.Qf3 (16.Bd5 Nf4 17.Qf3 Nd5 18.ed5 Ne7 19.Ne7 Qe7–/+) 16...Na5 (16...Nge7 17.Ne7 Qe7 18.d5=+) 17.Nd2 (17.Bb3 Nf4 18.Bc1 Bb5 19.Bf4 Bf1+=) 17...Nc4 (better is 17...Nf4!?=+) 18.Nc4+= Nf4 19.Nb6 (19.Bc1 Bf5 20.ef5 Qh6+=) 19...ab6 20.Bc1 Bf5 21.ef5 Qf7 (21...Qh6 22.g3 (22.Bf4?! Qf4 23.Qf4 ef4=) 22...Rhe8 23.gf4+/– (23.Bf4?! ef4 24.Qf4 Qf4 25.Rf4 Re2=)) 22.Bf4 ef4 23.a4 c6 (23...Rhe8 24.a5 ba5 25.Ra5+=) 24.a5 (24.Rab1 Rhe8+/–) 24...ba5 25.Ra5 Kc7 (25...Kd7 26.Rb1 Rb8 27.Ra7+–) 26.Qf4 (26.Rb1!?+/–) ½–½. Kamminga,G – Vitols,K, corr NED–LET, 1996.

14.d4 ed4 15.cd4 Nce5 +/–.

14.Kh1 0-0-0 15.d4 ed4 (15...Bb6!?+= 16.Qf3 Nge7 17.Ne7 Qe7 18.d5 Na5 19.Na3 Rdf8 20.Bb5+=) 16.cd4= Bb6 17.Nd2 (17.Bb5 d5 18.ed5 Nce7 19.Bd7 Rd7 20.Ba3=) 17...Kb8 (17...Nge7 18.Nf3= Nf5 19.ef5 Nb4 20.Rab1+=) 18.Nb3 Nce7 (18...Re8 19.Qf3 Nce7 20.Ne3=) 19.Ng3 (19.Ne3 Bc6 20.Qf3+=) 19...Be8 20.Qf3 d5 21.ed5 Qg7 (21...Bf7 22.Ba3 Qg8 23.d6 Bc4 24.de7=) 22.Qf6 (better is 22.Nh5!? Qh6 23.Nf6+/–) 22...Qf6= 23.Rf6 Nd5 ½–½. Stiefel,Frank (1880) – Mueller,Andreas, Crailsheim op 1st, 1995.

14.Kh1 Nce7 15.Ba3=+.

13.a3 Bc5 14.Nf5 (14.Rf1 Ne6 15.Nc3 Bd4 16.Be6 Be6 17.Nd1–/+; 14.Nc3 Ne6 15.Rf1 Bd4 16.Be6 Be6 17.Nd1–/+) 14...Ne6 15.Nc3 c6 16.Ne2 Ng7 17.Ng7+=.

13.c3= Ba5 (13...Be6 14.Bb5 (14.Be6 Ne6 15.Nf5 Ba5 16.Qf3 Bb6 17.d3+=) 14...c6 15.cb4 cb5 16.0-0 Nc6 17.Bc3+=) 14.d3 Ke7 (14...c6 15.Rf1 (15.0-0+= b5 16.Bb3 Ne6 17.Ba3+=) 15...b5 16.Bb3 Ne6 17.Bc1+=; 14...Bd7 15.Nf5 Ne6 16.Bc1 0-0-0 17.g3+=) 15.g3 (15.Nf5 Bf5 16.Qf5 Qh6 17.0-0=) 15...b5 (15...Ne6 16.Bc1 Ke8 17.Rf1=) 16.Bb3 Be6 (16...Ne6 17.Rf1=) 17.Nd2 (17.Rf1=) 17...Bb6 (17...b4 18.Rc1 Kd7 19.Nf5=) 18.a4 (18.Rf1 a6=) 18...Bb3 19.Nb3 ba4 20.Ra4 Ne6 21.Rf1 Qe8 22.Rb4 (22.Ra2!?=) 22...a5+= 23.Nf5 (23.Rc4 a4 24.Nd2 a3–/+) 23...Kd8–/+ 24.Nd6? (better is 24.Rc4!?–/+) 24...cd6–+ 25.Rb6 Kc7 26.Rd6 (26.Na5 Kb6 27.Nc4 Kc7 28.Rf6 Ra6–+) 26...Kd6 27.Rf6 Kc7 28.c4 Nef8 29.Bc3 Nd7 (29...Nd7 30.Rf5 a4–+) 0–1. Roczniak,Jan – Krzyskow, corr Poland, 1980.

13.Bc3 A) 13...Bc5 14.a3 (14.Nf5 Ne6 15.Rf1 c6 16.g3 b5 17.Be6–/+; 14.g3 Ne6 15.Nf5 c6 16.Rf1 b5 17.Be6–/+; 14.Rf1 Ne6 15.Nf5 c6 16.g3 b5 17.Be6–/+; 14.h3 Ne6 15.g3 Bd7 16.Nf5 0-0-0 17.Rf1–/+; 14.Bb2 Ne6 15.g3 c6 16.Nc3 b5 17.Bb3–/+) 14...Be6 15.Bb3 Bb3 16.cb3 Ne6 17.Nf5+=; B) 13...Ne6 14.Be6 (14.Bb4 Nef4 15.Qd1 Ng2 16.Kf2 Qh6 17.Nc3–+) 14...Bc3 15.Bf7 Kd8 16.Nc3 Nf4 17.Qf3–/+.

13.Nc3 Bc3 14.Bc3 Ne6 15.g3 Ng5 16.d3 Be6 17.Be6 =.

13.Rf1 Ne6 14.a4 (14.a3 Bc5 15.Nc3 Bd4 16.Be6 Be6 17.Nd1–/+; 14.g3 c6 15.c3 Bc5 16.a4 Ng7 17.Qf3–/+) 14...Bc5 15.Nc3 c6 16.Ne2 b6 17.Be6+=.

10.0-0 c6 11.c3 Ba5 12.Ba3 b5 (12...d5 A) 13.Bd3 Qd7 (13...Bb6 14.Kh1 Kd7 15.Qh6 Qg8 16.ed5 Nd5 17.Be4–/+) 14.Be7 Ke7 15.ed5 Bb6 16.Kh1 Nf4 17.Qh6–+; B) 13.ed5 Bb6 14.Kh1 cd5 15.Bd3=+ e4 16.Bb5 Bd7 17.Be7–/+; 12...Bb6 13.Kh1 d5 14.ed5 (14.Bb3 de4 15.Nh4 Rf8 16.Be7 Qe7 17.Ng6–/+) 14...cd5 15.Bd3 e4 16.Bb5 Bd7 17.Be7–/+) 13.Bb3 Bb6 (13...c5 14.Nh4 (14.d4 Bb6 15.Nbd2 f5 16.Rae1 c4 17.Bc4=+; 14.d3 Bb6 15.Kh1 Qd7 16.Bc1 d5 17.ed5=) 14...c4 15.Rf6= Rf8 16.Rf8 Kf8 17.Bc2=) 14.Kh1 (14.d4 a5 15.Nbd2 Rb8 16.Bc1 a4 17.Bc2–/+; 14.Rf2 Bf2 15.Kf2 f5 16.Ng5 Qb6 17.Ke2–+; 14.Nd4 Rf8 15.Bb2 ed4 16.Kh1 f5 17.d3–+; 14.Bc5 dc5 15.c4 a5 16.Na3 Be6 17.Rfc1–+) 14...a5 (14...Rf8 15.Ng5 fg5 16.Rf8 Kf8 17.Qh7=+; 14...d5 15.Nh4 0-0 16.ed5 cd5 17.Ng6=) 15.Nh4= a4 16.Rf6 ab3 17.Ng6 Ng6 18.Rg6 hg6 19.Qh8 Kd7 20.Qd8 (better is 20.Qg7!? Qe7 21.Qe7 Ke7 22.ab3=) 20...Kd8–/+ 21.ab3 Bg4 22.Bb2 Ra1 23.Ba1 Bd1 24.b4 Bc2 25.Na3 Bd3 26.h3 Bf2 27.Bb2 Be1 28.Bc1 Be4 29.Kh2? Bd3–+ 30.g4 e4 31.Kg1 e3! 32.de3 Bc3 33.Nb5 Bb5 34.Ba3 g5 35.Kf2 Ke7 36.e4 Kf6 37.Kf3 d5 38.ed5 cd5 39.Bc1 d4 40.Ke4 d3 41.Ke3 Ke5 42.Bd2 Bd2 43.Kd2 Kf4 44.h4 gh4 45.g5 (45.Kc1 h3 46.Kd1 h2 47.Kc1 h1Q 48.Kb2 d2 49.g5 Qc1 50.Kb3 d1Q 51.Ka2 Qd5#) 0–1. Machete99 (2250) – khmcrafty (2625), ICC, 2002.

10.0-0 c6 11.Nh4 d5 (better is 11...Bd2!? 12.Nd2 Qb6 13.Kh1 Qb2+= 14.Rad1 Rf8 15.Nf5 Bf5 16.ef5=) 12.ed5 (12.Rf6 Bd2 (12...Rg8 13.ed5 Bc5 14.Kh1 Nd5 15.Ng6 Qf6 16.Ne5 Rg6+=) 13.Ng6 Bg4 14.Qe5 hg6 15.Nd2 dc4 16.Rg6+–) 12...cd5 (12...Rf8!? 13.dc6 Qb6 14.Kh1 Qc6= 15.Bd3 Be6 16.a3=) 13.Bb5+= (13.Rf6 dc4 14.Ng6 Ng6 15.Rg6 hg6 16.Qh8+=) 13...Bd7 (13...Kf7 14.Be5 Qb6 15.Kh1 Qb5 16.Rf6+/–) 14.Rf6 (14.Bd7 Qd7 15.Rf6 0-0-0 16.Be5+=) 14...Bb5 15.Ng6 Ng6 16.Rg6 Bc5 (16...hg6 17.Qh8 Kd7 18.Qe5+=) 17.d4+/– hg6 18.Qh8 Bf8 19.Nc3 (19.de5?! Qb6 20.Kh1 Bd7=) 19...Bc4 20.Ba3 Kf7 21.Bf8 Qf8 22.Qe5 Re8 23.Qf4 Kg7 24.Qf8 Rf8 25.Rd1 b5 26.a4 b4 27.Nb5 b3 (27...Rf6 28.Na7 Ra6 29.Nb5+=) 28.cb3+/– Bb3 29.Ra1 Rf7 30.a5 Bc4 31.Nd6 Rd7 32.Nc4 (better is 32.Ne8!? Kf8 33.Nf6+/–) 32...dc4= 33.Rb1 Rd4 (33...Kh6!?=) 34.Rb7+= Kh6 35.Ra7 c3 36.Rc7 Re4? (better is 36...Ra4+/–) 37.Rc3+– Re5 ½–½. Rey – Conca,J, corr Spain, 1985.

10.0-0 d5 11.ed5 Nd5 12.Nh4 0-0 (better is 12...Rg8=) 13.Ng6+– hg6 14.Qg6 Kh8 15.Rf3 Threatening mate... how? (15.Rf3 Qe7 16.Qh5 Qh7 17.Qh7 Kh7 18.Bd5+–) 1–0. Bendig,Frank – Bothe,Erhard, corr, 1990.

10.0-0 Kd7 11.Nh4 (11.d4 Nf4 (11...c6= 12.a3 Ba5 13.de5 fe5 14.Ne5 de5 15.Rd1 Nd5+/–) 12.Qg4 (12.Qh6 Qf8 13.Qf8 Rf8 14.c3 Ba5 15.Bc1 c6=; 12.Qf7 Qf8 13.Qf8 Rf8 14.c3 Ba5 15.Bc1 c6=; 12.Qh4 Neg6 13.Qf2 ed4 14.Bd4 Ne5 15.Nfd2 Nc4=) 12...Kc6 13.Qg7 Qf8 14.Qf8 Rf8 15.c3 Ba5=; 11.a3 Ba5 (11...Bc5 12.d4 Bb6 13.Kh1 Qe8 14.Nbd2 ed4 15.Nd4 Ne5=) A) 12.d4 Bb6 (12...c6 13.de5 fe5 14.Ne5 Ne5 15.Be5 Qb6+/–; 12...Qe8 13.Kh1 Bb6 14.Nbd2 ed4 15.Nd4 Ne5=) 13.Kh1 Qe8 14.Nbd2 Kd8 15.Qh6 Bg4=; B) 12.Kh1 Bb6 (12...Qe8 13.d4 Bb6 14.Nbd2 ed4 15.Nd4 Ne5=; 12...c6 13.d4 Qb6 14.Bb3 c5 15.dc5 Qc5=; 12...Nc6 13.Nc3 Bc3 14.Bc3 Qe7 15.d4 Kd8=) 13.d4 Qe8 14.Nbd2 Kd8 15.Qh6 Bg4=; 11.c3 d5 12.Bd5 (12.ed5 Nf4 13.Qh4 Qg8 14.g3 Bc5 15.d4 ed4+=) 12...Nd5 13.cb4 Nb4 14.d4 Nd3 15.Ne5 fe5+=) 11...Qf8 (11...Bc5 12.Kh1=+ Qf8 (12...Nf4 13.Qd1 d5 14.ed5 Ned5 15.g3 b5+=) 13.Nc3 Nf4 14.Qd1 Qh6 15.Nf3 Qg6=+) 12.d4= (12.c3 Bc5 13.d4 Bb6 14.a4 a5 15.Kh1 Kd8=+) 12...Nf4 (better is 12...ed4!? 13.Bd4 Ne5= 14.c3 Ba5 15.Na3 Bb6=) 13.Rf4+= ef4 14.c3 (better is 14.Qb5 Nc6 15.d5 Bc5 16.Kh1+/–) 14...d5=+ 15.cb4 (15.ed5 Bd6–/+; 15.Bd5 Bd6=+) 15...dc4–/+ 16.Nd2 Rg8 (16...a5 17.ba5 f5 18.ef5=+) 17.Nc4 Kd8 18.Rf1 Bg4 19.Qb5 b6 20.Nd2 Bd7 21.Qd3 Rg4–/+ 22.Nhf3 Qg8 23.Rf2 h5 24.d5= Qg6 25.Qc3 Ng8 26.e5 Ne7 27.e6 Nd5 28.Qd4?? Be6–+ 0–1. Rau,Johann – Motyvay,Tibor, corr, 1974.

10.0-0 Qd7 11.h3 (11.d4!?= A) 11...Qc6 A1) 12.Nfd2 Rf8 (12...d5 13.ed5 Nd5 14.Bd5 Qd5 15.Rf6 Rf8+=) 13.a3 Ba5 14.Kh1 d5 15.ed5 Nd5=; A2) 12.Nbd2 d5 (12...f5 13.c3 Ba5 14.Ng5 fe4 15.Bf7 Kd7+/–) 13.ed5 Nd5 14.Bd5 Qd5 15.c4 Qe6=; B) 11...Qg4 12.Qg4 Bg4 13.c3 Ba5 14.h3 Bf3 15.Rf3 Rf8+=) 11...b5 (11...Qc6 12.d3 f5 (12...Kd8 13.Kh1 b5 14.Bb3 Bc5 15.Nbd2 Qb6+=) 13.Ng5 Qb6 14.Kh1 fe4 15.Ne4 Kd8+=) 12.Bf7? (better is 12.Bb3!?–/+ Bb7 13.d3 d5 14.Nh4 Rf8 15.c3 Ba5–/+) 12...Kf7–+ 13.Be5 Ke8 14.Bf6 Rg8?? (14...Rf8 15.Be7 Bc5 16.d4 Rf3 17.Qf3 Bd4 18.Kh1 Qe7 19.e5–+) 15.Ng5?? (15.c3 Ba5 16.Be7+/–) 15...d5 (better is 15...h6 16.Qh6 Bc5 17.d4 Bb6–/+) 16.c3= Ba5 (16...h6 17.Nh7 de4 18.cb4+=) 17.Qh7 (17.Be7 Bb6 18.Kh1 Qe7 19.Nh7+–) 17...Rf8?? (better is 17...Qd6 18.ed5 Rf8+= (worse is 18...Qd5 19.Re1 Bb6 20.d4+=)) 18.Be7+– Rf1 19.Kf1 Qe7 20.Qg6 Kd7 21.ed5 Bb7 (21...Rb8+–) 22.Qf5 Ke8 (22...Kd8 23.Ne6 Ke8+–) 23.Na3 (23.Na3 Kd8 24.Re1+–) 1–0. Catic,P – Ajdinovic,B, corr Yugoslavia, 1975.

10.0-0 f5 11.ef5 Bf5 12.Nh4 d5 13.Nf5+= dc4 14.Ng7 Kd7 15.Qg4 Kc6 16.Rf6 Kb5+= 17.a4 Ka5 18.Qc4 c6 19.Ne6 Qb6 20.d4 Nd5 21.c3 Be7 22.Nd2 Qa6?? 23.Nb3 Kb6 24.Qc5!! (24.Qc5 Bc5 25.dc5#) 1–0. Svensson,Jan – Lovholm,Mikael, corr SSKK lag–SM, 1990.

10.c3 Ba5 (--> 7.c3 Ba5 8.Qh5 g6 9.fg6 Ng6 10.Nf3 Nce7).

10.c3 Bc5 11.d4 Bb6 12.0-0 (12.Rf1 c6=) 12...Qd7 (12...d5 13.ed5 Nd5 14.Nh4=) 13.Nh4= Qg4 14.Qg4 Bg4 15.Ng6 Ng6 16.Rf6 0-0-0 (16...Rf8 17.Rf8 Kf8 18.Nd2=) 17.Nd2 (17.h3 Bd7+=) 17...Rdf8 (17...Rhf8 18.Bf7=) 18.Raf1 Nf4 19.Rf8 (19.Rh6 a6=) 19...Rf8 20.g3 Ng6 (20...Nh3 21.Kg2 Rf1 22.Kf1=) 21.Rf8 Nf8 22.Nf3?? (better is 22.Kf2=) 22…Bf3–+ 0–1. Rush,Bradley – Tomashewski,Peter (1810), IECG, 1994.

10.Nc3 c6=+ 11.0-0 Bc3 12.Bc3 d5 13.Bd3 Qb6 14.Kh1 Bd7 (14...Kd8 15.Qh6=+) 15.Rab1= Qc7 16.ed5 0-0-0 17.dc6 Bc6 18.Qg4 Kb8 19.Qc4 e4?? (better is 19...Rhg8 20.Bb4 Bd5 21.Qc7 Kc7=+) 20.Be4+– Be4 21.Qe4 Nd5 22.Bd4 Rhe8 23.Qf5 Qc6 24.Rfe1 Re1 25.Re1 Rf8 26.a3 Nc7 27.Qc5 Qc5 28.Bc5 Rc8 29.Bd6 a6 30.Kg1 Ka7 31.c4 Ne8 32.Bg3 Ng7 33.Bf2 Ka8 34.d3 h5 35.g3 a5 36.Bd4 Rc6 37.Rb1 Nf5 38.Bf2 Ne5 ½–½. Sternik,Ryszard – Karanfilovski,Goran, corr Matteus Chess, 1996.

9.Bb3 Nb3 (10.ab3 gf5 11.ef5 Bc5–/+) 0–1. Ziethen,H – Gosman,A, ICCF World Cup8–9 prel–190, 1990.

9.Bd3 Bc5 10.Nc3 gf5 11.ef5 0-0 12.Qg4 Kh8 13.Na4–/+.

9.Be6 Be6 10.Qf6 Rf8 11.Qe6 gf5 12.c3 Bc5 13.d4 Bb6 14.Nd2 Qd7 15.Qd7 Kd7 16.de5 fe4 17.ed6 cd6 18.Ne4 Nc4 19.0-0-0 Rf4 20.Ng3 (20.Nd2 Be3 21.Ngf3 Rg8–+) 20...Rf2 (20...Nb2?! 21.Kb2 Rf2 22.Kb3 Rg2 23.Ne4–/+) 21.N1e2 Re8 (21...Re8 22.Rdf1 Rg2–+) 0–1. Sternik,Ryszard – Jacewicz,Grzegorz, corr or01–022 E–mail, 2002.

9.Be2 gf5 10.Qh5 Kf8 11.c3 Bc5 12.d4 Bb6 13.Qh6–/+.

9.Qf6?? Rf8 10.Bb5 c6–+.