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1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6

(...)

9.a4 dc4 10.Nc3 (10.Na3 Bb7=) 10...Bb7 11.Bc4 Qc7 12.d4?? (better is 12.h3+=) 12...Bf3 13.Qf3 Bh2 (better is 13...cd4 14.Ne4 Ne4 (14...Qc4?! 15.Nd6 Qb4 16.Ba3=) 15.Qe4 Qc4 16.Qd4 Qd4 17.Bd4 Rfd8–+) 14.Kh1 Bd6 (14...cd4!? 15.ed4 Qc4 16.Kh2 Qd4 17.Qg3–+) 15.d5 (15.Bd3 c4 16.Be2 Rfc8=) 15...Ne5–/+ 16.Qh3?? (better is 16.Qe2 Nc4 17.Qc4 ed5 18.Nd5 Nd5 19.Qd5–/+) 16...Nc4–+ 17.de6 (17.Ra2 Be5 18.f4 Bc3 19.Bc3 Nd5–+ (worse is 19...ed5 20.Bf6 gf6 21.Rf3–+)) 17...Nb2 18.f4 Nc4 (18...Nd3!? 19.Ra2–+) 19.ef7 Rf7 (19...Qf7 20.e4 Nh5 21.g3–+) 20.Qe6 Nd2 (better is 20...Na5 21.Rad1 Nb7 22.Rf3–+) 21.Rfd1 (21.Nd5 Qd8 22.Rfd1 Nfe4–+) 21...Re8 22.Qd6 (22.Qa2 Nde4 23.Ne4 Ne4 24.Re1–+) 22…Qd6 (22...Qd6 23.Rd2 Qd2–+) 0–1. yannigator (1920) – wmalone (2055), net–chess.com, 2009.

9.a4 d4 10.ed4+= cd4 11.Nd4 Bb7 12.Bf3 Bf3 13.Qf3 (13.Nf3!? Re8 14.a5+=) 13...Qc7= 14.g3 Ne5 15.Qe2 Nc4?? (15...Qc4 16.Qc4 Nc4 17.Bc3+=) 16.Bc3?? (16.Rc1 Qd7 17.Rc4 Rfc8+–) 16...Bc5?? (better is 16...Nd5=) 17.Qc4+– e5 18.Nf3 (better is 18.Nc6 Rfe8 19.Re1+–) 18...Bf2!–+ (18...Bf2 19.Rf2 Qc4 20.Ne5 Qc5–+) 0–1. Valpa – Milosforman, playchess.de, 2004.

9.a4 e5!? +=.

9.a4 Re8 10.d3 Bb7 11.Nbd2 h6 12.Qc2 Rc8 (12...a6 13.ba6 Ra6 14.d4 cd4 15.Nd4=) 13.a5+= ba5 14.Bc3 Bc7 15.Nb3 Increasing the pressure on the isolated pawn on a5 15...dc4 16.dc4 Ng4 (16...Be4 17.Qb2+=) 17.Rfd1+/– (worse is 17.Na5 Bf3 18.Bf3 Nh2+=; 17.Ba5 Bf3 18.gf3 Nh2 19.Bc7 Rc7+–) 17...Qe7 18.Na5 (18.Rd7 Qd7 19.Nc5 Ne3 20.fe3 Bh2 21.Nh2 Rc5+/–) 18...Bf3+= 19.Bf3 (worse is 19.gf3 A) worse is 19...Bh2 20.Kg2 Nf2 21.Rd7+= (21.Kf2 Qh4 22.Kg2 Qg3 23.Kh1 Bg1+=); B) 19...Nh2? 20.f4+–; C) 19...Qh4 20.Bd3 Qh2 (worse is 20...Bh2 21.Kg2+/–) 21.Kf1 Nge5 22.Bh7 Kf8+=) 19...Nde5 (19...Bh2 20.Kh1 Nde5 21.Be5 Be5 22.Bg4 Ba1 23.Ra1+/–) 20.Bg4 Ng4 21.h3 Ne5 22.Be5 Be5 23.Ra3 Bb8 24.Nc6 Qb7 25.Rad3 (25.Qa4 Qc7 26.Nb8 Rb8 27.Qa7 Rb7+–) 25...Rc6+/– 26.bc6 Qc6 27.Rd8 Bc7 28.Re8 Qe8 29.Qa2 Bb6 30.Qa6 g6 31.Qb7 Qa4 32.Rd7 Qa1 33.Kh2 Qf6 34.Qb8 Kg7 35.Qf4 Qf4 36.ef4 Kf6 37.g4 g5 38.Kg3+– Kg6 39.h4 gh4+/– 40.Kh4 f5? 41.g5 hg5 42.fg5 Ba5 43.Re7 Bc3 44.Re6 (44.Re6 Kg7 45.Ra6+–) 1–0. Mueller,K – Miethke, corr DDR, 1967.

9.Qc2 a6 10.cd5 ed5 11.d4 =.

9.Nc3= a6 10.d3 =.

9.Nc3 dc4 10.Bc4 Bb7 11.Be2 Qc7 12.Rc1 Rfc8 13.Qc2 Rd8 14.Rfd1 Ne5 15.Ng5 Ng6 16.g3 Be7 17.h4 a6 18.a4 ab5 19.Nb5 Qb8 20.d4 h6 21.h5 Nf8 (worse is 21...hg5 22.hg6 fg6 23.dc5 bc5 24.Bc4+=) 22.dc5 Rc8 (better is 22...hg5!? 23.cb6 Rc8–/+) 23.Bf6= gf6 24.Ne4 f5 25.Ned6 Rc5 26.Qd2 Bc6 27.a5 Bd6 (27...Bd6 28.Nd6 Raa5 29.Rc5 Rc5=) 0–1. Rooijen Van,Peter (1655) – Iacobitz,Lucian_Valentin (1985), BI–2009–F–00007, 2010.

9.Nc3= Qc7 10.Qc2 Ne5 (10...dc4!? 11.Ne4 Ne4 12.Qe4 Bb7=) 11.Ne5+= Be5 12.g3 (12.f4 Bd6+=) 12...Bb7 (12...d4 13.Na4 de3 14.fe3 Bg3 15.Bf3 Bh2 16.Kh1–/+) 13.a4 (13.f4 Bd6=) 13...d4=+ 14.Nd1 Qd7 (14...de3 15.de3 a6 16.Be5 Qe5 17.Nc3=+) 15.Ra3 (15.f4 Bc7=+) 15...Bb8 (15...a6 16.f4 Bd6 17.Rb3=+) 16.f4 (16.a5 ba5 17.ed4 cd4=) 16...h6 (16...a6 17.ed4 cd4 18.ba6=+) 17.Nf2 Rd8 (17...a6 18.Rd3 e5 19.fe5 Be5 20.Qd1=+) 18.Rd1 (18.ed4 cd4 19.Bd4 Ne4+=) 18...Qe7 (18...Bd6 19.a5 a6 20.ab6 ab5 21.cb5 Ra3 22.Ba3=) 19.ed4 cd4 20.Rd3 (20.a5 Bd6 21.Rd3 ba5 22.Bd4 Ne4=) 20...e5 21.fe5 (21…Qe5 22.Re1=). Krolik – Friberger, corr 3GMM–36, 1997.

9.d3 Qc7 10.Nbd2 Bb7 (--> 9.d3 Bb7 10.Nbd2 Qc7).

9.d4 dc4 10.Nbd2 c3 11.Bc3 cd4 (11...a6 12.Nc4 Bc7 13.Qa4=) 12.Bd4+= e5 13.Bb2 (13.Nc4 ed4 14.Nd6 de3 15.fe3 a6=) 13...e4 (13...Qe7 14.Rc1=) 14.Nd4 (14.Ne4 Ne4 15.Bd3 Ndc5 16.Be4 Ne4–+) 14...Ne5 (14...Qc7 15.h3=) 15.g3 (15.Rc1 Re8+=) 15...Bh3= 16.Re1 Qd7 (16...Rc8 17.Qa4=) 17.Qb1 Qb7 (17...Bb4 18.Rd1 Bd2 19.Rd2=) 18.Nc6+= Nc6 (18...Qc6 19.bc6) 19.bc6 Qc6 20.Bf6 gf6 21.Qe4 Qe4 (21...Rac8 22.Ba6 Rc7 23.Qc6 Rc6 24.Nc4=) 22.Ne4 Be5 23.Rac1 Bf5 (23...Rfc8 24.Ba6 Rc1 25.Rc1+=) 24.Bf3 (24.Bd3 Kg7+=) 24...Rad8 (24...Rac8 25.Red1+=) 25.Bg2 Kg7 (25...Rfe8 26.Red1+=) 26.f4 Bb8 (26...Bb2 27.Rc7+=) 27.Kf2 Rfe8 28.Nc3 Rd3 (28...Bd6 29.Nd5+=) 29.Nb5 (29.h3 Rc8 30.Nb1 Rdd8+=) 29...Red8 (29...Bg4 30.Bf3 f5 31.Rcd1+=) 30.Nd4+/– Rd2 31.Re2 Re2 32.Ke2 Bg4 33.Bf3 Bd7 34.Bc6 Bg4+= 35.Kf2 Bd6 36.Bf3 Bd7 37.g4 Bc5 38.Nb3 Bd6 39.Nd4 Bc5 40.Rd1 Re8 41.Rd3 Be6 42.a3 Bc4 43.Rc3+/– Be6 44.Kg3 f5+= 45.h3 fg4 46.hg4 Bc8 47.Bc6 Rd8 48.Rd3 Rd6 49.Be4 h6 50.Kf3 (50.Bb7 Bd7=). Jaworski,Miroslaw – Chistiakov,Alexander N, corr Baltic Sea tt1, 1963.

9.h3 Bb7 10.d4 Qc7 11.Nbd2 Rad8 12.Rc1 Qb8 13.a4 dc4 14.Bc4 Ne4 15.Ne4 Be4 16.Bd3 Ba8 17.Qe2 e5? (17...cd4 18.Nd4 (18.Bd4? e5–+) 18...Nc5 19.Bc2+=) 18.de5 (better is 18.Ne5!? Be5 19.de5 Ne5 20.Bh7 Kh7 21.Qh5 Kg8 22.Be5+/–) 18...Bf3+= (worse is 18...Ne5 19.Ne5 Be5 20.Bh7 Kh7 21.Qh5 Kg8 22.Be5+/– (worse is 22.Qe5 Qe5 23.Be5 Rd3+=)) 19.Qf3 Ne5 20.Be5 Be5 21.Bc4 Rd6 22.Rfd1 Rf6 23.Qh5 Bh2 24.Kf1 Qg3? (24...Qe8 25.Rc2+=) 25.Qe2 (better is 25.Qf7! R6f7 26.Bf7 Kf7 27.fg3 Ke6 28.Ke2 Bg3 29.Kd3+–) 25...Qg5 26.Rd5 Qh4 27.Rcd1 (27.Rd7 Bb8+=) 27...Bc7 (27...Rf2 28.Qf2 Qc4 29.R5d3=) 28.Rd7+/– Qg3 29.f3 h6 30.Qf2 Qh2 31.Qg1 Qe5 32.e4?? (32.Bd5 Rd6 33.f4 Qf5 34.Rd6 Bd6=) 32...Bb8?? (32...Qe4! 33.Rc1 Bg3–+) 33.Rd8 (33.Qe3!?+=) 33...Bd6 (better is 33...Qe4! 34.Bb3 Bg3 35.Rf8 Kf8–/+) 34.Rf8= Kf8 35.Qe3 Qh2 36.Kf2 Be5 37.Kf1 Bd4 38.Rd4–/+ cd4 39.Qd4 Rd6 40.Qc3 Qh1 41.Kf2+= Qd1 42.Qb4 Qd2 43.Qd2 Rd2 (43...Rd2 44.Be2 Ra2–/+) 0–1. Ruhle,Ernst Albrecht (1610) – Reutimann,Hans Peter (1690), SUI–ch Seniors, 2004.

9.cd5 ed5

10.d4 c4 11.Nc3 Bb7 12.Nd2 Qc7 (12...a6 13.ba6 Ra6 14.e4 Ne4 15.Nce4 de4 16.Nc4=+) 13.f4 (13.Nf3 a6=) 13...Rae8 14.Rf3=+ Ng4 (14...Re6 15.Qa4=+) 15.Nf1 Ndf6 16.h3 (16.Rh3 Qd7=+) 16...Nh6 17.g4 (17.Rc1 Nf5=+) 17...Ne4 18.Rc1 (18.Ne4 de4 (< 18...Re4 19.Ng3+=) 19.Rf2 a6 20.ba6 Ba6=) 18...f5 19.g5 Nf7 20.h4 (20.Ne4 fe4 21.Rg3 Ra8–/+) 20...g6 (20...Qd7 21.Qa4–/+) 21.Ne4 (21.h5 Qd7=+) 21...Re4 (21...fe4 22.Rf2–/+) 22.Bc3 (22.h5 Qd7 23.a4 Ra8=+) 22...Rfe8 (22...Qe7 23.h5–/+) 23.Rc2 (23.Rf2 Qd7=+) 23...Qe7 (23...Ba3 24.Bb2 Bb2 25.Rb2=+) 24.Qd2 (24.Rf2 Qd7=+) 24...h6 (24...a6 25.ba6 Ba6 26.Rf2=+) 25.Kf2 (25.Rf2 Re6=+) 25...hg5 26.hg5 Kg7 27.Rh3 Ng5 28.fg5+= Qg5 29.Bf3 Bc8 30.Be4?? fe4–+ 31.Rg3?? Bg3 32.Ng3 Rf8 (33.Kg2 Rf3–+) 0–1. Laine,EH – March,Dennis E, corr Potter mem, 1979.

10.d4 Re8 11.Nc3 (11.dc5 bc5 (worse is 11...Bc5 12.Nc3+=) 12.Nc3 Bb7=) 11...Nf8 (11...c4 12.a4+=) 12.Qc2 (12.dc5 bc5 13.Rc1 Be6=) 12...Ne6 (12...c4 13.Rfc1=) 13.Rfd1 (13.dc5 bc5 14.Rad1 Bb7=) 13...Bb7 14.Rac1 (14.dc5 bc5 15.Qd2 Qc7=) 14...c4 15.Ne5 a6 16.ba6 Ra6 17.a4 Bb4 (17...Qa8 18.Ra1=) 18.Nb5 Ne4 (18...Qa8 19.Ra1=) 19.Bg4 Ra8 (19...g6 20.Bf3 N4g5 21.Be2=) 20.Bf5+= Nf6 21.Bc3 Bf8 22.Rb1 g6 23.Be6 Re6 24.Bb4 Bg7 25.Nc3 (25.Rdc1 Ne4=) 25...Nd7 26.f4 (26.Nf3 Qf6=) 26...f5 (26...Re8 27.Rf1=) 27.a5 ba5 28.Ba5 Qc8 29.Bd8 Bc6 (29...Rea6 30.Bg5=) 30.Bh4 (worse is 30.Nc6 Qc6 (30...Rc6?! 31.Be7=) 31.Bh4 Re3–/+) 30...Ra3 (30...Bf8 31.Rdc1=) 31.Ra1 Ra1 32.Ra1 Bf8 ½–½. Vegjeleki,Adolf (2145) – Daatselaar,Jan Bart van (2070), corr WSTT/3/06/Semifinal, 2008.

9.a4 a5

10.ba6 Ba6 11.Na3 Qc7 (11...e5 12.d3=) 12.Nb5 (12.cd5 Nd5 13.Ba6 Ra6=) 12...Bb5+= 13.ab5 dc4 (13...e5 14.Ne1+=) 14.Bc4= Ne5 (14...Ng4 15.h3 Nde5 16.Ra8 Ra8 17.Be2=) 15.Ne5 Be5 16.Be5 Qe5 17.Ra6 Nd5 (17...Rfb8 18.d4 cd4 19.Qd4 Qd4 20.ed4=) 18.Qa1 Qb8 19.Bd5 (19.d4 Rd8+=) 19...ed5 20.Qa2 (20.Qa4 Ra6 21.ba6 Qd6+=) 20...Ra6= 21.ba6 c4 (21...Qd6 22.Qb2 Ra8 23.Qb5=) 22.a7 (22.Qb2 Qa7 23.Ra1 Rd8+/–) 22…Qb7= (22...Qb7 23.Ra1 Ra8=). Adam,Stefan – Gerhard,H, corr ICCF EU/M/Gr/307 (year?).

10.d4 Ne4 11.Nbd2 f5 (11...Bb7 12.cd5 Nd2 13.Nd2=) 12.Ne5 (12.cd5 ed5 13.dc5 Ndc5+=) 12...Be5 (12...Ne5 13.de5 Bc7 14.f4=) 13.de5 Qh4? (13...Bb7 14.Rc1=) 14.g3 (better is 14.cd5!? Nd2 15.Qd2+–) 14...Qh3+= 15.Bf3 Qh6 (15...Ra7 16.cd5 ed5 17.Nb1+=) 16.Bg2 (16.cd5 Nd2 (16...ed5? 17.Ne4 de4 18.Qd5 Kh8 19.Qa8 ef3 20.Rad1+–) 17.Qd2 Bb7+/–) 16...Bb7 (16...Ra7 17.cd5 ed5 18.Ne4 de4 19.Qd5 Kh8 20.e6+/–) 17.f4 (17.Ne4 fe4 18.Be4+/–) 17...g5 (better is 17...Rad8=) 18.Ne4+/– fe4 19.cd5 (19.Be4!? gf4 20.Rf4 de4 21.Qd7+–) 19...Bd5+/– 20.Qc2 gf4 (20...Qg6 21.Rac1+=) 21.ef4+/– Bc4?? (better is 21...Qg6+/–) 22.Qc4+– 1–0. carocan (1825) – luisfigo1985 (1760), kurnik, 2011.

10.d3 Bb7

11.Nbd2 Rc8 12.Rc1 Bb8 (12...Re8 13.d4=) 13.Qb3 (13.cd5 Nd5 14.Nc4 Nb4=) 13...e5 (13...Re8 14.Qc2=) 14.cd5 Bd5 (14...Nd5 15.Qc4=) 15.Nc4 Qc7 16.e4 Bc4 17.Rc4 (17.Qc4 Nh5+=) 17...Qb7 (17...Qd6 18.Nh4=) 18.Nh4+= g6 (18...Bd6 19.Nf5 Qc7 20.Qc3+=) 19.g4 (19.g4 h6 20.Ng2=; 19.Qc2 Rcd8+=). Kilpatrick,Robert – MacLeod,David Munro, corr SCCA final, 1989.

11.Nbd2 Qe7 12.h3 Rad8 13.Nh2 (13.cd5 ed5 (13...Bd5? 14.e4+–) 14.Rc1 Rfe8=) 13...e5+= 14.Qc2 (14.Rc1 Rfe8+=) 14...e4 (14...Rfe8 15.e4 de4 16.de4+=) 15.d4 (15.cd5 Bd5 16.de4 Ne4=) 15...Bc7 (15...Rc8 16.Rac1+=) 16.Rfe1 (16.Rfd1 Rc8=) 16...Qd6 17.Ndf1 (17.Nhf1 Qe6+=) 17...Ne8 (17...Qe6 18.Red1+=) 18.dc5 Nc5 19.Red1 Qg6 20.Bd4 (20.Rac1 f5+=) 20...Bd6 (20...Nd3 21.Rd3 ed3 22.Bd3=) 21.Rd2 (21.Nd2 Nc7+=) 21...f5 (21...Rc8 22.Rad1+=) 22.cd5= f4 (better is 22...Bd5!? 23.Bc5 Bc5+= (worse is 23...bc5 24.Rd5 Bh2 25.Nh2 Rd5 26.Bc4+/–)) 23.ef4 Rf4 24.Ng4 (24.Ne3 Rc8+/–) 24...Rc8 (24...Bd5 25.Bc4 Bc4 26.Qc4 Qf7 27.Qf7 Kf7 28.Be3+/–) 25.Qa2 Nd7 26.Rdd1 Qf7 27.Bc4 Nef6 28.Nf6 gf6 29.Ne3 Qg6 30.Bf1 Ne5? 31.Bb6+– Rh4 32.Kh1 Nf3 33.g3 f5 34.Bg2 Rh5 35.Qe2 Bg3 36.fg3 Qb6 37.Bf3 ef3 38.Qf3 Qh6? 39.Nf5 Rh3 40.Kg1 Qg5 41.Kg2 Rh5 42.Ne7?? Qe7–+ 43.Qh5?? Rc2 44.Kh3 Bc8 (44...Bc8 45.Qg4 Bg4 46.Kg4 Qe4 47.Kg5 Qe5 48.Kg4 h5 49.Kf3 Re2 50.Rab1 Qe3#) 0–1. Stabenow,Juergen – Engel,B, corr ICCF EU/M/GT/267 (year?).

10.d4 Bb7

11.Nc3 Qc7 =.

11.h3 Qc7 12.dc5!? Nc5 13.Bf6 gf6 14.cd5 Bd5 15.Nc3 =.

11.h3 Qc7 12.Qe1 cd4 13.cd5 Bd5 14.ed4 (14.Nd4 e5 15.Nf5 Rad8=+) 14...Ne4 (14...Qc2 15.Bc1–/+) 15.Ne5 (15.Nc3 Nc3 16.Qc3 Qc3 17.Bc3 Rac8=+) 15...Be5 (15...Ne5!? 16.de5 Be5 17.Be5 Qe5–+) 16.de5 Ne5 17.f3 Nf3?? (better is 17...Nc5–/+) 18.Bf3+– (18.gf3?! Ng3 19.Rf2 Ne2 20.Qe2 Rad8+=) 18...Ng3 19.Rf2 Rad8?? (better is 19...Bf3 20.Rf3 Qc5 21.Kh2 Nf5+–) 20.Be5 Bf3 (20...Qc5 21.Bd5 ed5 22.Bg3 Rfe8+–) 21.Bc7 (21.Rf3?! Qc5 22.Kh2 Nf5+–) 21...Rd1 22.Nc3 (22.Qd1 Bd1 23.Bg3 Rd8+–) 22...Re1 23.Re1 Bg2 24.Rg2 Rc8 25.Rg3 (25...Rc7 26.Nd5+–) 1–0. Fiedler – Zimmer,Georg, corr SOK–89–29, 1989.

11.h3 Qc7 12.Qe1 cd4 13.cd5 de3 14.de6 ef2 15.Qf2 fe6 16.Nbd2 –/+.

9.Qc2 Bb7

10.a4 dc4 11.Na3 =+.

10.a4 Qc7 11.g3 (11.cd5 Nd5 12.d3 a6=) 11...Ne5 (11...dc4 12.Qc4 Bd5 13.Qh4=+) 12.Ne5 (12.cd5 Nd5 (< 12...ed5 13.Ne5 Be5 14.d4+=) 13.Ne5 Be5=+) 12...Be5 13.Be5 (13.a5 Bb2 14.Qb2 ba5 15.cd5 ed5=) 13...Qe5 14.Nc3 (14.Ra3 dc4 15.Qc4 Bd5=) 14...d4–/+ 15.Nd1?? (better is 15.f4 Qd6 16.Qd3–/+) 15...d3!–+ 16.Bd3 (16.Qd3 Qa1; 16.Bd3 Qa1) 16...Qh5 (better is 16...Qa1 17.Nc3 Qa3–+) 17.Nc3?? (17.Re1 Ng4 18.h4 Ne5=) 17...Ng4?? (17...Qh3 18.f3 Ng4 19.Bh7 Kh8–+) 18.h4= g5 19.Be4 Be4+= 20.Ne4 gh4=+ 21.f3? hg3–+ 22.d3 Ne3 23.Nf6 Kh8 24.Nh5 Nc2 25.Rac1 g2! 26.Kg2 Ne3 27.Kf2 Nf1 28.Rf1 Rad8 29.Ke3 Rd4 30.Rh1 f5 31.Nf4 Rf6 32.Rh2 Rf7 33.Kd2?? Rf4 34.Ke3 e5 35.Rh3 Rg7 0–1. valpa – lontjr, playchess.de, 2003.

10.a4 Re8 11.d4 (11.cd5 Nd5 12.Na3 e5=) 11...Ne4 (11...cd4 12.Bd4 Qc7 13.Bb2=+) 12.Ne5 Qc7 (12...cd4 13.ed4 Rc8 14.Bd3=+) 13.f4 (13.Nd7 Qd7 14.f3 Nf6=+) 13...f6 (13...cd4 14.Nd7 Qd7 15.Bd4=+) 14.Nd7= Qd7 15.Nd2 Nd2 16.Qd2 Qe7 (better is 16...a6=) 17.f5 (17.Bd3!?=) 17...ef5–/+ 18.Rf3 (better is 18.Rf5!? Qe6 19.Rh5–/+) 18...f4!–+ 19.Rh3 (19.Rf4 Bf4) 19...Bc8 (19...fe3 20.Qc2 h6 21.Rd1–+) 20.Bf3? (better is 20.Rh5!? cd4 21.Bd4 fe3 22.Qd3–/+) 20...Bh3–+ 21.Bd5 (21.gh3 fe3 22.Bd5 Kh8–+) 21...Be6 22.Ba8 Ra8 23.d5 Bf7 (better is 23...Bg4 24.ef4 Qe4 25.Qc3–+) 24.Re1 (24.ef4 Qe4 25.Qc1 Bf4–+) 24...fe3 (better is 24...Qe4!? 25.Qe2 Re8 26.Bc1–+) 25.Qe3 Qe3 (26.Re3 a6–+) 0–1. Krause – Wolf,G, corr DDR, 1972.

10.d3 a6 11.Nc3 =.

10.d3 Qc7 11.g3 (11.cd5 Nd5 12.Na3 Nb4=) 11...dc4=+ 12.dc4 Rad8 13.Nbd2 Rfe8 (13...e5 14.Rad1=+) 14.Ne1 (14.Rfd1 e5=) 14...e5 (14...Ne5 15.f4 Ned7 16.e4=+) 15.a4 (15.e4 a6=+) 15...e4 16.Rd1 (16.a5 ba5 17.Bc3 a6=+) 16...Ne5 (16...a6 17.Ng2=+) 17.Be5 (17...Be5 18.f3=+). Hasler,Ulrich – Meyer,Thomas, CiF, 2002.

10.cd5 Nd5 11.Nc3 Nc3 12.dc3 Qc7 =.

9.Qc2 e5

10.Nc3 A) 10...d4 11.Ne4 (11.ed4 cd4 12.Ne4 Nc5 13.Nc5 bc5 14.Ng5 Bb7 15.f3 Re8 16.Bd3 h6=) 11...Qc7 12.Nfg5 a6 13.f4 Re8 14.Bh5 g6 15.Bf3 Ra7 16.ba6 Ra6+=; B) 10...dc4 11.Ne4 (11.Bc4 a6 12.Ne4 Qe7 13.d4 ed4 14.Nd6 Qd6 15.ed4 Bb7 16.dc5 Qc5=) 11...Qc7 12.Bc4 Ne4 13.Qe4 Bb7 14.Qf5 a6 15.ba6 Ba6 16.d3 Bc4=.

10.d3 A) 10...Bb7 11.Nbd2 (11.cd5 Nd5 12.Nc3 a6 13.ba6 Nb4 14.Qd2 Na6 15.Rfb1 Nf6 16.a4 Re8+=) 11...a6 12.ba6 Ra6 13.cd5 Nd5 14.d4 ed4 15.Ba6 Ba6 16.Nc4 Qc7+=; B) 10...a6 11.Na3 (11.ba6 Ba6 12.Nc3 d4 13.Nb5 Bb5 14.cb5 Nd5 15.Qc4 N7f6 16.Rae1 Qd7+=) 11...Qe7 12.ba6 Ba6 13.cd5 Nd5 14.Nc4 Bb7 15.a4 Nb4 16.Qc3 Bc7=.

10.d4 A) 10...e4 11.Nfd2 (11.Ne5 cd4 12.ed4 Qc7 13.Qc3 Bb7 14.Rc1 Rfe8 15.Nd7 Nd7 16.Qh3 Bf4=) 11...Re8 12.cd5 Nd5 13.Nc4 Bc7 14.Nc3 Nb4 15.Qb3 Qh4 16.g3 Qg5=; B) 10...cd4 11.ed4 (11.cd5 Bb7 12.ed4 e4 13.Ne5 Bd5 14.Nc3 Rc8 15.Qa4 Ne5 16.Nd5 Nf3+=) 11...e4 12.Ne5 Qc7 13.Qc3 Bb7 14.Rc1 Rfe8 15.Nd7 Nd7 16.Qh3 Bf4=.

10.cd5 a6 11.Nc3 (11.e4 Nh5 12.Ne5 Nf4 13.d4 cd4 14.Nd3 Ne2 15.Qe2 Qf6 16.f4 Bc5+/–) 11...Qc7 12.ba6 Ba6 13.Ba6 Ra6 14.Nb5 Qb8 15.e4 Rd8 16.a4 Ng4 +/–.

10.Nh4 A) 10...a6 11.Nf5 (11.Nc3 d4 12.Ne4 Ne4 13.Qe4 Ra7 14.ba6 Nf6 15.Qb1 e4 16.ed4 cd4+=) 11...Qc7 12.Nc3 Bb7 13.cd5 Nd5 14.Nd5 Bd5 15.Qd3 g6 16.Nd6 Qd6+–; B) 10...dc4 11.Nf5 (11.Bf3 e4 12.Be4 Ne4 13.Qe4 Bb7 14.Qb7 Qh4 15.f4 Qe7 16.Na3 a6+=) 11...Bb8 12.Bf3 e4 13.Be4 Qc7 14.f4 Bb7 15.Bb7 Qb7 16.Qc4 a6+/–.

10.cd5 Nd5

11.Nc3 Nc3 12.dc3 Nf6 13.Rfd1 Qe7 14.c4 a6 15.ba6 Ba6 16.Bc3 Rfd8 =.

11.Bc4 Bb7 (11...N5f6 12.Qd3 Qe7 13.e4 a5 14.Nc3 Rd8 15.Ng5 Rf8 16.Rac1 Bb7=) 12.a3 (12.Qd3 Nc7+= (12...N5f6 13.Qd6 Ne8 14.Qd3 e4 15.Qe2 ef3 16.gf3 Nd6=) 13.Qd6 Ne8 14.Qd3 e4 15.Qe2 ef3 16.gf3 Nd6=) 12...N7f6 (better is 12...Nc7!?= 13.Qf5 a6 14.Nc3 g6 15.Qg4 Nf6 16.Qh3 Qd7=; 12...N5f6 13.Nc3 e4 14.Ng5 Bh2 15.Kh2 Ng4 16.Kh3 Qg5–+) 13.Ne5 Qc7 (13...a6 14.Nc6 Qe8 15.a4 Bc6 16.bc6 Qc6=) 14.f4 Ne7 (14...a6 15.Nc3 Nc3 16.ba6 (worse is 16.dc3 Be5 17.fe5 Qe5+=; 16.Bc3?! ab5 17.Bb5 Nd5+/–; 16.Qc3 ab5 17.Bb5+/–) 16...Ba6+/–) 15.Nf7 (15.Nf3 Ne8 16.Nc3 a6+/–) 15...Bd5?? (better is 15...Rf7 16.Bf7 Kf7 17.Bf6 gf6 18.Qh7 Ke6+/–) 16.Ng5+– (16.Nd6?! Qd6 17.e4 Bc4 18.Qc4 Kh8+–) 16...g6 17.Bd5 (17.Bf6 Rf6 18.Bd5 Nd5+–) 17...Ned5 (17...Nfd5 18.Ne6 Qd7 19.Nf8 Rf8 20.Nc3+–) 18.Ne6 (18.Qc4 Rad8 19.Bf6 Rf6+–) 18...Qd7 19.Nf8 Rf8 20.Qc4 Rf7 (20...Qe6 21.Nc3+–) 21.e4 Ne4 (21...Nf4 22.Bf6 Qg4 23.g3 Ne2 24.Kf2+–) 22.Qd5 Qb5 23.Nc3 (worse is 23.Qe4 Qb2 24.Nc3 Qd2+–) 23...Qb2 24.Ne4 Bf8 (24...Be7 25.f5 Qd4 26.Qd4 cd4 27.f6+–) 25.Ng5 (25.Ng5 Qd4 26.Qd4 cd4 27.Nf7 Kf7 28.g4+–) 1–0. purplegadge (1740) – bjoern (1655), gameknot.com, 2014.

11.Bd3 N5f6 12.Ng5 h6 13.Ne4 Bc7 14.Nbc3 a6 15.Rfc1 ab5 16.Nb5 Bb7 =.

9.Nc3 Bb7

10.d3 Qc7 11.h3 Rad8 12.Qc2 Ne5 13.cd5 ed5 14.Nd1 Nf3 15.Bf3 Be5 (15...Qe7!?=) 16.d4+= cd4 17.Qc7 Bc7 18.Bd4 Ne4 19.Be4 (19.Rc1!? Bd6 20.Re1+=) 19...de4+= 20.a4 Bd5 21.Nc3 Bb7 22.Rfc1 Rc8 23.a5 ba5 24.Ba7 Be5 25.Bd4 Bd4 26.ed4 Rfd8 27.Ne2 Rc1 28.Rc1 Rc8 (28...Rd5 29.Rc5+=) 29.Ra1 (29.Rc8!? Bc8 30.Nc3+/–) 29...Ra8+= 30.Nc3 Rc8 (30...f5!?+=) 31.Na4+/– Rc4 32.Nc5 Bd5 33.Ra5 Rb4 34.Na6 Rb1 35.Kh2 Bc4 36.d5! Rd1?? (36...Bd5 37.Nc7 Decoy) 37.b6 (37.Nb4 f5 38.b6 Rb1+–) 37...Rb1? (37...Bd5 38.Nb4 Bb7+–) 38.d6 Rb6 39.d7 (39.d7 Rd6 40.Nc5+–) 1–0. Jacobi,Karl Heinz (1920) – Scholz,Gerd (1660), GER–ch Seniors–A, 2008.

10.d4 Rc8 11.Qa4 dc4 (11...cd4!? 12.Nd4 Qc7–/+) 12.Qc4=+ cd4 13.Qd4 Qc7 (13...Bf3 14.Bf3 Be5=+) 14.Rac1 (14.Rfd1 Bf3 15.Qd6 Qd6 16.Rd6 Be2 17.Ne2 Rc2 18.Bf6 Nf6=) 14...Qb8 (better is 14...Bf3!? 15.Bf3 Bh2 16.Kh1 Be5=+) 15.Qh4 (15.Rfd1 Be7+=) 15...Rc5 (15...Rfd8 16.a3=) 16.Ba3+= Rcc8 17.Bd6 Qd6 ½–½. Kleist,Werner (1665) – Hoenisch,Florian (1650), 17 sen. Bad Sooden op, 2005.

10.d4 Qe7 11.a4 Rac8 12.cd5 Nd5 13.a5 cd4 14.Nd5 Bd5 15.Qd4 f6 (15...f5 16.ab6 Nb6 17.Rfc1=) 16.ab6 (16.e4!? Bc5 17.Qd3+=) 16...Bc5 (16...Nb6 17.e4 Rc2 18.Bd3=) ½–½. Brinch,B – Buechner,HJ, corr ICCF EU/M/707, 1986.

10.cd5 ed5 11.Rc1 Re8 12.Qc2 Rc8 (12...a6 13.d4=) 13.Qa4 c4 (13...d4 14.ed4 Nd5 15.Rfe1+=) 14.Ba3 (14.Qa7 Rc7+=) 14...Bb8 15.d4 Ne4 16.Bb4 Ndf6 17.Ne5 Nc3 18.Bc3 Ne4 19.Bg4 Rc7 20.Bb4 (20.Bf5 Nc3 21.Rc3 Qg5=) 20...Nd6 (20...Qf6 21.Bd7 Rd8 22.f3=+) 21.g3 (21.Bf3 Qf6=) 21...f6 22.Nc6 Bc6 23.bc6 f5 24.Bd6 (24.Bf3 Ne4=) 24...Qd6=+ 25.Bf5 Rc6 (< 25...Qc6 26.Qc6 Rc6 27.Bd7+/–) 26.e4 g6 (26...de4 27.Rc4 b5 28.Qb5+–) 27.e5= Qc7 28.Bg4 Qb7 (28...h5 29.Bf3 Rd8+=) 29.Qb5+= Rd8 30.e6 (better is 30.Rfe1+=) 30...a6+– 31.e7! Re8 (31...Qe7 32.Qc6) 32.Qd5 Kg7 33.Bf3 (33...Qe7 34.Qc6+–; 33.Rc4?! Rc7 34.Qe5 Kh6 35.Qe3 Kg7+–) 1–0. Kuperski,Marek – Maciejewski,Roman, corr 1. AMM Poland, 1992.

10.d3 Qe7

11.Qc2 Rad8 12.a4 e5 13.e4 (13.cd5 Nd5 14.a5 N7f6=) 13...de4 (13...d4!? 14.Nd5 Nd5 15.ed5 f5=) 14.de4+= Bb8 (14...a5 15.Rad1+=) 15.Nd2 (15.a5 Bc8+/–) 15...Rfe8 (15...Bc7 16.Rfd1+=) 16.Nd5 (16.a5 Qe6+=) 16...Nd5 (16...Qd6 17.a5+=) 17.cd5+/– f5 18.f3 f4 (18...Qg5 19.Nc4+=) 19.Nc4 (19.Rfd1 Bc8+/–) 19...Rf8 (19...a5 20.ba6 Ba6 21.Rfd1+/–) 20.Rad1 (20.Rfd1 Bd6+/–) 20...Rf6 21.Rf2 (21.a5 Rh6+=) 21...Rg6 (21...Rh6 22.g3+=) 22.Bf1 (22.a5 Qh4+=) 22...Re8 (22...Qh4 23.d6 Rh6 24.h3+=) 23.Rfd2 (23.a5 Qh4+/–) 23...Bd6 (23...Qh4 24.a5+=) 24.a5+/– Qh4 25.ab6 ab6+= 26.Ra1 Bb8 27.Bc3 Rh6 28.h3 Qg5 29.Kh1 Rf8 30.Qb2 Rff6 31.d6 Rfg6 32.g4 fg3 33.Ne5 Ne5–/+ 34.Be5 Bd6 35.Rad1 Qe5 36.Qe5 Be5 37.Rd8 Kf7 38.R1d7 Kf6 39.Rb7 Kg5 40.Rd5 Kf4 41.Re7 Bd4 42.Rf5 Ke3 43.Kg2 Rh4 44.Ra7 Rhh6 45.Ra3 Kd2=+ 46.Rf7 Be5 47.Rd3 Kc2 48.Ra7 Rd6–/+ 49.Re3 Rd2–+ 50.Be2?? Rhd6 51.Ra2 Kb1 52.Rd2 Rd2 53.Kf1 Kc2 54.Ra3 g2! (55.Kg2 Re2 56.Kf1 Rh2–+) 0–1. Kreuzer – Sauerbier, tt Verb–Liga, 1983.

11.Qc2 Rfd8 12.Rfe1 (12.h3 h6=) 12...Ne5 (12...h6 13.Red1=) 13.cd5 (13.Ne5 Be5 14.f4 Bd6=) 13...Nd5 (13...ed5 14.d4 Nf3 15.Bf3 Rac8+=) 14.Ne4 (14.Nd5!? Nf3 15.Bf3 ed5 16.a4=) 14...Nf3+= 15.Bf3 (15.gf3 Bc7 16.f4 e5 17.fe5 Be5 18.Be5 Qe5–/+) 15...Bc7 (better is 15...Nb4 16.Qc3 f5 17.Nd6 Bf3 18.gf3 Rd6–/+) 16.a4? (better is 16.Ng3!?=) 16...Nb4 (better is 16...f5!? 17.Ng3 Nb4 18.Nf5 Bh2 (18...Nc2 19.Ne7 Kf7 20.Bb7+/–; 18...ef5?! 19.Qc4 Kh8 20.Bb7–/+) 19.Kh1 A) 19...Nc2 20.Ne7 Kf8 A1) 21.Kh2? Bf3 22.Rg1 Bb7–+ (22...Ke7?! 23.gf3 g6 24.Rad1+=); A2) 21.Bb7+–; B) 19...ef5 20.Qc4 Kh8 21.Bb7 Qb7 22.Kh2 Nd3–+) 17.Qc3–/+ f5 18.Nf6 gf6 (18...Qf6 19.Bb7 Qc3 20.Bc3–/+) 19.Bb7 Rab8 20.Bc6 Rd3 21.Qf6 Qf6 (21...Nc6?! 22.Qh8 (worse is 22.bc6 Qf6 23.Bf6 Kf7–/+) 22...Kf7 23.Qh7 Ke8 24.Qg6 Qf7 25.Qf7 Kf7 26.bc6+=) 22.Bf6 Nc6 23.bc6 Rd6 (23...Kf7 24.Bg5–/+) 24.Rad1 (24.e4 Rc6 25.Rad1 e5–/+) 24...Kf7 25.Bh4 (25.Bc3 Rbd8 26.Rd6 Rd6–/+) 25...Rc8 26.f3 (26.Bg3 Rc6 27.Rd7 Kg6–+) 26...Rc6 (better is 26...c4!?–+) 27.e4–/+ Rd6 (27...f4!? 28.e5 c4–/+) 28.ef5+= e5 (28...ef5 29.Re7 Kg6 30.Rd6 Bd6 31.Re6 (worse is 31.Ra7 c4 32.Rd7 Be5–/+) 31...Kh5 32.g3=) 29.Rd6= Bd6 30.Rd1 Bb8? 31.Rd7+/– Kg8 32.Bf6 c4 33.Rg7+– Kf8 34.Rh7 Rc6 35.Bg5 Bc7 36.f6 c3?? 37.Bh6 Kg8 38.Rg7 Kh8+/– 39.f7 Rf6?? 40.f8Q! (40.f8Q Rf8 41.Rc7+–) 1–0. Blankenberg,Bruno – Groeber,E, corr, 1984.

9.d3 Bb7

10.a4 dc4 11.dc4 Qc7 12.Nbd2 e5 13.Nh4 e4 14.Kh1 (14.h3 Bh2 15.Kh1 Be5+=) 14...Be5 (14...a6 15.Nf5+=) 15.Qc2 Rad8 16.Nf5 Rfe8 (worse is 16...Bh2 17.g3+–) 17.Ng3 Now all is on e4 (17.Rfd1 Bb2 18.Qb2 Ne5=) 17...Bb2 Black begins to deal mighty blows 18.Qb2 Ne5 (18...Qe5 19.Qc2+=) 19.Qc3 (19.Qc2 Nd3=) 19...Neg4 (better is 19...Qe7=) 20.h3 (better is 20.a5=) 20...Nf2!–/+ 21.Rf2 (21.Kh2 Nd3–/+) 21...Qg3 22.Rf4? (better is 22.Kg1!?–/+) 22...Rd3!–+ 23.Bd3 (23.Qd3 ed3 Theme: Double Attack) 23...ed3 24.Nf3 Re3 25.Rf5 (25.Qf6 gf6 26.Rg4 Qg4 27.hg4 Bf3–+) 25...Ne4 26.Re1 (26.Qc1 Re2 27.Qf1–+) 26…Re1 (26...Re1 27.Qe1 Qe1 28.Ne1 d2–+; better is 26...Nf2 27.Kg1 Bf3 28.Rf3 Nh3 29.Kh1 Re1 30.Qe1 Qe1 31.Kh2–+) 0–1. Rewitz,Poul (2245) – Jensen,Vagn (2250), Aarhus–B DEN, 1988.

10.Qc2 Qc7 11.Nbd2 Rfe8 12.h3 Rad8 13.a4 a5 14.Rac1 Qb8 15.Qb1 h6 16.Qa1 Qc7 17.Rfe1 Rc8 18.Rc2 Qd8 19.Qb1 Bc7 20.Rcc1 e5 21.cd5 Nd5 22.Nc4 Nb4 23.e4 Qe7 24.Bc3 Kh8 25.Bd1 Qf6 26.Nh2 Rcd8 27.Bb3 Qf4 28.Re3 Rf8 29.Qb2 h5 30.Rd1 f5 31.Nf3 h4 (better is 31...fe4!? 32.Nfe5 Ne5 33.Ne5 Kh7 34.de4 Nc2 (34...Be4 35.Rd8 Rd8 36.Qe2+–) 35.Rd8 Qf2 36.Kh2 A) 36...Rd8?? 37.Rf3 Qh4 38.Bc2+– (38.Qc2?! c4 39.Qe2 cb3+–); B) 36...Ne3 37.Rf8 Qf8–/+) 32.Nce5+/– Ne5 33.Be5 Be5 34.Ne5 Kh7 35.Qe2 fe4 36.Qh5 Qh6 37.Qh6 Kh6 38.de4 Rd1 39.Bd1 Re8 40.Nc4 Re6 41.Bb3 Re4 42.Re4 Be4 43.Nb6 Bd3 44.Bc4 Bf5 45.Nd5 1–0. Degterev,Pavel (2275) – Callow,Chris (2040), WC–2008–F–00004, 2008.

10.Nc3 a6 11.ba6 Ra6 12.Nb5 =.

10.Nc3 Re8 11.a3 (11.cd5 Nd5 12.Ne4 Bc7=) 11...Qc7 12.h3 (12.cd5 ed5 13.Qc2 d4 14.ed4 cd4 15.Nd4 Bh2 16.Kh1 Be5–/+) 12...Rad8 (12...a6 13.ba6 Ra6 14.Nb5=) 13.cd5 ed5 14.Rc1 Nf8 (14...d4 15.ed4 Bf4 16.Rc2=) 15.Nb1 (15.Qa4 d4 16.ed4 Bf4=) 15...Qe7 16.Re1 Ne6 17.Nh4 Nc7 (17...g6 18.Qa4 d4 19.Qa7–+ (< 19.ed4 Nf4 20.Bf1 Qe1 21.Re1 Re1–/+)) 18.Nf5 Qe6 19.Nd6 Qd6 20.a4 Re7 21.Bf3 Rde8 22.Na3 Nd7 (22...a6 23.ba6 Ba6 24.Qc2=) 23.Bg4 Ne5 24.Bf5 Qh6 (24...Bc8 25.Bc8 Rc8 26.Be5 Re5 27.Qg4=) 25.d4+= Qg5 26.Bh7 Kh7 27.de5 d4 28.Qc2 g6 (better is 28...Kg8!? 29.f4 Qg3 30.ed4 Ne6+=) 29.f4+/– Qh6 (29...d3!?+/–) 30.ed4+– Qf4 31.dc5 bc5 32.Nc4 (32.Qc5 Qa4 33.Bd4 Ne6 34.Qa7 Qd4 35.Qd4 Nd4–/+) 32...Bd5 (32...Qf5 33.Qf5 gf5 34.Nd6+–) 33.Nd6 Rd8 34.Qc5 Qg5 (34...Qa4 35.Rf1+–) 35.Qf2 Ne6 (35...Ne8 36.Nc8 Rb7+–) 36.Nf7 Rf7 37.Qf7 Kh6 38.Rc2 (38.Qf2 Nf4 39.h4 Qg4+–) 38...Qg3 (38...Nd4 39.h4 Qg2 40.Rg2 Bf7 41.Rf1+–) 39.Bc1 g5 40.Rf2 (40...Qf2 41.Qf2+–) 1–0. Szczepaniak,Alicja – Maciejewski,Roman, corr 1. AMM Poland, 1991.

10.Nbd2 Re8 11.h3 (11.cd5 ed5 (11...Bd5? 12.e4+–) 12.Qc2 a6=+) 11...e5 12.cd5 Nd5 13.Nc4 Qc7 (13...Qe7 14.e4 Nf4 15.Nh4=+) 14.Qb3 a6 15.a4 ab5 16.ab5 Nb4 17.Rac1 Ra7 18.e4 Rea8 19.Ng5 Nf6?? (19...Na2 20.Ra1 Be7 21.Nf7 Bd5 22.ed5 Kf7+–) 20.Nd6+– Qd6 21.Nf7 Qe7 22.Ne5 Kh8 23.Nc4 (23.Rfe1 Ra2+–) 23...Qe6 24.f4 Nfd5? (better is 24...Ra2+–) 25.Bg4 (25.ed5?! Qe2 26.Nb6 Qe3 27.Kh2 Re8+–) 25...Qe8 26.ed5 Bd5 27.Rce1 Qb5 28.f5 Kg8 29.f6 Qc6 30.fg7 Rg7 31.Bg7 Kg7 32.Re7 Kh6 33.Qc3 (33...Bf7 34.Rf6 Qf6 35.Qf6 Bg6 36.Qf4#) 1–0. Sternik,Ryszard – Zimmer,Georg, corr SOK–91–75, 1991.

10.cd5 ed5 11.Nc3 (11.d4 Qe7=) 11...Qc7 (11...Re8 12.a4=) 12.d4 Ne4 (12...c4 13.a4=) 13.dc5 Nc3 14.Bc3 bc5 15.Bd3 h6 (15...f6 16.Qc2 h6 17.Bf5=) 16.Rc1 Rae8 (16...Rfe8 17.Re1+=) 17.a4 d4 (17...f6 18.Bg6 Rc8 19.Bf5+=) 18.Bd4 (18.ed4 Bf3 19.Qf3 Bh2 20.Kh1 Bf4+=) 18...Bf3 19.Qf3 Bh2 20.Kh1 Qd6 21.Bg7 Ne5? (better is 21...Kg7 22.Bf5 Nb6+/–) 22.Be5+– (22.Bf8?! Kf8 23.Qf5 Nd3+/–) 22...Be5 23.Qf5 Qg6 (23...Kg7 24.f4 Bb2 25.Rc5+–) 24.Rc5 Qf5 25.Bf5 Kg7 26.Rb1 Re7 (26...Kf6 27.g4+–) 27.a5 Bc7 (27...Kf6 28.g4+–) 28.b6 ab6 29.ab6 Bd6 30.Rc6 Bb8 31.b7 Re5 32.e4 Ra5 33.g4 Ra2 34.Kg2 Rd8 35.Rc8 Rdd2 36.Rb8 Rf2 37.Kg3 Rg2 38.Kf4 Rgf2 39.Ke5 Ra5 40.Kd4 Ra4 41.Ke3 (41.Ke3 Rb2 42.Rb2+–) 1–0. Perlitz,Heiko – Kessler,Meinrad, TT–10 ETC, 2004.

10.Nbd2 a6

11.a4 a5 12.Qc2 Qc7 (12...Qe7 13.Rac1=) 13.h3 (13.cd5 ed5 14.Rac1 Rfe8=) 13...Rad8 14.Rfe1 (14.cd5 Bd5 15.e4 Bb7=) 14...e5 15.cd5 Nd5 16.Nc4 Nb4 (16...Rfe8 17.Rac1=) 17.Qd2 (17.Qc3 f6=) 17...f6 (17...Rfe8 18.Rac1=) 18.e4 Be7 (18...f5 19.Qc3=) 19.Nh4 (19.Rac1 Bc8=) 19...g6 (19...Nb8 20.Qc3=) 20.Qh6 (20.Nf3 Nb8 21.Qc3 Rd7=) 20...Rf7 (20...Nc2 21.Bg4 f5 22.Nf5 gf5 23.Qe6 Kh8 24.Qe7=+) 21.Rec1 (21.Rac1 Nf8=) 21...Nf8 22.Qe3 (22.Rc3 Ne6 23.Qe3 Nd4–/+) 22...Ne6 23.Nf3 Nf4 24.Ne1 (24.Ra3 Bf8=+) 24...Bf8=+ 25.Bf1 Bc8 26.Kh1 (26.Qf3 Bh6–/+) 26...Bg7 27.Ra3 (27.Rc3 Be6–/+) 27...Be6 28.Qf3 Bh6 (28...Rfd7 29.Kh2=+) 29.Ne3 (29.Kh2 Rfd7–/+) 29...f5 (29...Bg5 30.g3 Nh5 31.N1c2=+) 30.ef5 Bf5 31.Qg3 Be6 32.Qh4 Bg7–/+ 33.Ng4 Rdf8 34.Kg1 Nh3?? 35.gh3+/– Bg4 36.hg4 Rf2 37.Qf2 Rf2 38.Kf2 e4 39.d4 Qf4 40.Kg1 Qd2 41.Rb1–/+ Bd4 42.Bd4 cd4 43.Bc4 Kg7 44.Rh3 d3 45.Bb3 Qc3 46.Re3 Qc5–+ 47.Ng2 d2 48.Kh2? Qc7 (49.Kh3 Qc1 50.Rc1 dc1Q 51.Re4 Qc3 52.Re3 Nd3–+) 0–1. Bonetti,Shane – Milde,Lars, TT–08 ETC, 2003.

11.a4 ab5 12.ab5 Ra1 13.Qa1 Qc7 14.Bc3 Rd8 (14...e5 15.cd5 Nd5 16.Bb2+=) 15.h3 (15.cd5 ed5 (worse is 15...Bd5 16.e4+/–) 16.Qb2 Ra8=) 15...Ra8+= 16.Qb2 h6 17.Ra1 Qb8 18.Bd1 Qd8 19.Ra8 Qa8 20.Be2 Be7 ½–½. Petters Merino,Oscar (1920) – Neves,B (2050), LIPEAD40/pr40 (PER), 2012.

11.a4 Qc7 12.cd5 Bd5 13.e4 =.

11.ba6 Ba6 12.Qb3 Bb7 =.

10.Nbd2 Qc7

11.a4 Rad8 12.a5 (12.cd5 Nd5 13.Nc4 Nb4 14.Nd6 Qd6=) 12...dc4+= 13.dc4 Ng4 Increases the pressure on h2 (13...e5 14.a6 Ba8 15.Nh4=) 14.g3 (14.h3 Nh2 15.Re1 Nf3 16.Bf3 Bh2 17.Kh1 Be5=) 14...Ndf6 (14...e5 15.e4=) 15.ab6 (15.Qc2 Rd7=) 15...ab6 (worse is 15...Qb6 16.Bc3 Bc7 17.Qc2+/–) 16.Qb3 (16.h3 Bf3 17.Bf3 Be5=) 16...h5 (16...Rd7 17.Rfd1=) 17.Qc3 e5 18.Ng5 (better is 18.Bd3=) 18...e4 (18...Rd7 19.h3 Nh6 20.e4=) 19.Bg4 (19.Nge4 Be5 20.Nf6 Bf6+/–) 19...hg4 20.Nge4 Be7 (20...Ne4 Exploits the pin 21.Qg7 The nicest combinations are those leading to mate) 21.f3 Qd7 (21...gf3 22.Rf3 Ne8 23.g4+=) 22.fg4 (22.Nf6? Bf6 23.Qc2 Bb2–+) 22...Qg4 23.Rf6 (23.Nf6 Bf6 24.Rf6 gf6 25.Qf6 Kh7+/–) 23...Rd2 (23...gf6? 24.Qf6!? Qg3 25.hg3 Bf6 26.Nf6 (worse is 26.Bf6 Rde8 27.Nd6 Re6 28.Nb7 Rf6+–) 26...Kg7 27.Nf1+–; worse is 23...Bf6 24.Nf6 gf6 25.Qf6+/–; 23...Be4?? 24.Rf4 (24.Rb6?! Rd3 25.Qg7 Qg7 26.Bg7 Rd2 27.Bf8 Bf8+/–) 24...Qg6 25.Ne4+– (25.Re4?! Bf6 26.Qc1 Bb2 27.Qb2 Rd2 28.Qd2 Qe4+=)) 24.Rf4 1–0. Parr – Rupp, Hastings, 1972.

11.a4 Rfe8 12.h3 (12.a5 a6 13.ab6 Qb6 14.ba6 Ba6=) 12...e5 13.cd5 Bd5 14.e4 Bb7 15.Nc4 a6 16.Qb3 Re7 17.Bc3 Bc8 (better is 17...Nh5!?=) 18.a5+/– (18.Nd6?! Qd6 19.Nh4 Nb8=) 18...h6 (18...ab5 19.Qb5 Rb8 20.a6+/–) 19.Nh4 g6 (19...Re6!? 20.ab6 Nb6+/–) 20.Ng6! fg6? (better is 20...Re6 21.Nh4 ba5+–) 21.ab6 Nb6 22.Nb6 Be6 (22...c4 23.Qc4 Qc4 24.dc4 Rb8 25.Nc8 Rc8 26.Ra6 Ne4+–) 23.Na8 Qb7 (23...Qb8 24.Qb2 Ra7 25.Ra6 Ra6 26.ba6 Qa8 27.Qb6+–) 24.Qb2 Qa8 (24...ab5 25.Be5 Be5 26.Qe5+–) 25.Ra6 Qb8 26.Rd6! Qd6 27.Be5 (27.Be5 Qb6 28.Bf6+–) 1–0. wiking – gordonpdx, internet, 2009.

11.Rc1 a6 12.a4 ab5 13.ab5 Ra2 14.Qb3= Rfa8 15.Ra1 Ra1 16.Ra1 Qb8 (16...Ra1 17.Ba1 dc4 18.Qc4=) 17.Ra8 Ba8 18.h3 e5 19.cd5 Bd5 20.Nc4 e4 (21.Nfd2 Bh2 22.Kh1 Bd6=) =. Van Esbroeck,Dirk – Ritter,Gabor, EM/H/014 ICCF Email, 1999.

11.Rc1 a6 12.a4 ab5 13.ab5 e5 14.Ra1 =+.

11.Rc1 a6=+ 12.a4 ab5 13.ab5 Ng4 14.h3 Nh2 15.Nh2 Bh2 16.Kh1 Bd6 17.Qb3 Rfd8 (17...Ra7 18.Ra1 Rfa8 19.Ra7 Ra7 20.Ra1 Ra1 21.Ba1=+) 18.Rfd1= Be7 (18...Ra5 19.Ra1=) 19.d4 Bf6 (19...Qd6 20.cd5 Bd5 21.Bc4=) 20.dc5 (20.Bd3 dc4 21.Qc4 Be7=) 20...Nc5=+ 21.cd5 Bd5 22.Qb4 Bb2 23.Qb2 Ra2 24.Qc3 Qe7 (24...Rda8 25.Bc4 Bc4 26.Qc4=+) 25.Kg1 Qg5 26.Bf3 h6 (26...Ra5 27.Rb1=+) 27.Ra1 Rd7 (27...Rd2 28.Qd2 Nb3 29.Qd3 Na1 30.e4=) 28.Ra2 Bf3 29.Nf3 Rd1 30.Kh2 Qd5 31.Rd2 Rd2 32.Qd2 (< 32.Nd2 Qd7–/+) 32...Nd3 33.Nd4 Qc4 34.f4 e5 35.fe5 Ne5 36.Qf2 Qd3 37.Qf4 f6 (37...Nc4 38.Nf5=) ½–½. Fernandez Fornes,Juan A (2305) – Metz,Werner Richard (2620), corr Lewkowitz–mem A, 1998.

11.Rc1 a6=+ 12.a4 ab5 13.cb5 Ra7 =+.

11.Rc1 Rac8 12.h3 (12.cd5 ed5 13.Qc2 Rfe8=) 12...Rfd8 (12...Ra8 13.d4=) 13.d4 (13.cd5 Nd5 14.Qa4 Ra8=) 13...Qb8 (13...Ne4 14.Qa4=) 14.cd5 ed5 (14...Bd5 15.Nc4=) 15.Qb3 (15.dc5 bc5 (worse is 15...Nc5 16.Bf6 gf6 17.Nd4+/–) 16.Qc2 Ne5=) 15...Re8 16.a4 (16.dc5 bc5 17.Rfd1 c4=) 16...c4 17.Qc3 a5 (17...Qc7 18.Ba3=) 18.Ba3 h6 (18...Qc7 19.Rc2=) 19.Rfe1 (19.Nh4 g6=) 19...Re6 20.Bd6 (20.Nh4 Ba3 21.Qa3 g6=) 20...Qd6 21.Nh2 (21.Rb1 Re7=) 21...Rce8 (21...Qb4 22.Qc2=) 22.Bf3 Ba8 23.Nhf1 Nf8 (23...Rc8 24.Ng3=) 24.Ng3 Ng6 25.Nf5 Qf8 (25...Qb4 26.Qc2=) 26.Rf1 (26.Rb1 Bb7=) 26...Ne7 27.Ng3 ½–½. Wolf,M – Gulich,Wolfgang, corr DDR–ch M593, 1976.

11.Qc2 a6 12.a4 =.

11.Qc2 a6 12.cd5 ed5 13.a4 =.

11.Qc2 a6 12.cd5 Nd5 13.ba6 Ra6 14.d4 =.

11.cd5 ed5 12.Qb3 Rfe8 =+.

11.cd5 ed5 12.Qc2 a6 =.

11.h3 Rfd8 12.Qb3 e5 13.cd5 Bd5 14.Nc4 e4 (14...a6 15.a4=) 15.de4 Ne4 16.Rfd1 Ndf6 17.Qc2 Qe7 18.Kf1 Bc7 19.a4 h6 20.Nce5 Be5 21.Be5 Qe6 22.Qb2 Rac8 Black prepares c4 23.Bf6 Nf6 24.a5 c4 25.Nd4 Qe5 26.ab6 ab6 27.Bf3 (27.Qc3!?+=) 27...Bf3–/+ 28.Nf3?? (better is 28.gf3 Nd5 29.Kg2–/+) 28...c3 (better is 28...Rd1 29.Rd1 Qb2–+) 29.Qc2? (29.Rd8 Rd8 30.Qb3= (30.Ne5? cb2 31.Re1 Rd2–+)) 29...Qh2 ½–½. Breitfeld,J (2010) – Krueger,Er (2190), Dresden GER, 2013.

11.h3 Rfd8 12.Rc1 e5 13.cd5 Bd5 14.a3 =+.

11.h3 Rfd8 12.Rc1 Ne5 13.Ne5= Be5 14.d4 Bd6 15.cd5 (15.dc5 bc5 (< 15...Qc5 16.cd5 Qb4 17.Bf6 gf6 18.de6+/–) 16.Bf6 gf6 17.cd5 Bd5+=) 15...Bd5 (15...Nd5 16.Qa4=) 16.Bf3 (16.dc5 bc5 17.Bf6 gf6=) 16...Bf3 (16...e5 17.dc5 Bc5 18.Qc2=) 17.Qf3 Qe7 (17...a6 18.dc5 bc5 19.Bf6 gf6 20.b6 Qb6 21.Ne4+=) 18.dc5+= bc5 (18...Bc5 19.Bf6 Qf6 20.Qf6 gf6 21.Ne4+=) 19.Bf6 gf6 (19...Qf6 20.Qf6 gf6 21.Ne4+/–) 20.Ne4+/– f5 21.Nd6 (21.Nc5 Bc5 22.Qg3 Kf8+/–) 21...Qd6+= 22.Rfd1 Qe5 23.a4 Rac8 (23...Rd1 24.Qd1 Rc8 25.Rc4+/–) 24.Qb7+= c4? (better is 24...Rd1!? 25.Rd1 Qc7+=) 25.Rd4! c3 26.Rc3! Qd4 27.ed4 Rc3 28.Qa7 Rcc8 29.b6 Ra8 30.Qc7 Rac8 31.Qe7 Rd4 32.b7 Rcd8 33.a5 R4d7 34.Qd7!! (34...Rd7 35.b8Q Kg7 36.a6+–) 1–0. Kaenel,Hans Juerg – Hansen,Birger, Denmark, 1969.

11.h3 Rfd8 12.cd5 Nd5 13.Ne4 a6 14.ba6 Ra6 =+.

11.h3 e5 12.cd5 Bd5 13.Nc4 Bc4 14.dc4= Rad8 15.Nh4 e4 16.Qa4 Be5 17.Be5 Ne5 18.Rad1 Rfe8 19.Qc2 Qc8 20.Rd8 Rd8 21.Nf5?? Qf5–+ 22.Kh2 Qc8 23.Rb1 Qc7 24.Kg1 Rd6 25.Qc3 Nd3 26.Rf1 Qe7 27.a3 Qe5 28.Qc2 h5 29.Qa4 Rd7 30.Qc2 g5 31.Rd1 g4 32.Bd3 ed3 33.Rd3 Qe4 34.Rd2 Qc2 35.Rc2 Rd3 36.Kf1 Kf8 37.Ke2 Ra3 38.h4 Ke7 39.f3 Ke6 (40.Rd2 Rc3–+) 0–1. Dopper,Johan – Van der Haak,Gerard, corr NED BV, 1991.

11.h3 e5 12.cd5 Bd5 13.Nc4 Rfd8 14.Qa4 =+.

11.h3 Rfe8 12.a4 a5 13.Rc1 Rad8 (13...e5 14.cd5 Nd5 15.Ne4=) 14.Qc2 e5 15.cd5 Nd5 16.Nc4 Nb4 17.Qb3 Nf6 18.Rfd1 Nfd5 19.Bf1 Rc8 (19...Re7 20.Nfd2 Re6 21.Ne4=) 20.Nd6 (20.e4 Nf4=) 20...Qd6 21.d4 cd4 22.ed4 e4 23.Ne5 f6 24.Nc4 Qe6 25.Ne3 (25.Ba3 Nd3 26.Bd3 ed3+=) 25...Kh8 (25...f5 26.Rc8 Rc8 27.Bc4+=) 26.Bc4 (26.Ba3 Rc1 27.Rc1 Nd3 28.Bd3 ed3 29.Qd3 Nf4=) 26...f5 27.Ba3 f4 28.Ng4 f3 29.Bb4 ab4 30.Ne3 Rcd8 31.Nd5 Bd5 32.Bd5 Rd5 33.Rc6 (33.Qb4 Rg5 34.Kf1 e3–+) 33...Qf5 (33...Qd7 34.Qe3= (34.Qb4 Rg5 35.Kf1 Rg2–+)) 34.Rb6+= (worse is 34.Qb4 fg2 35.Rc3 Red8=) 34...Qg5 35.g3 e3 36.Qd3 (36.h4 ef2 37.Kf2 Qe7 38.Qf3 Rf8–+) 36...e2 (36...Qd8 37.a5 e2 38.Re1 Rd4 39.Qf3–+) 37.Re1 Qh5 (37...Rf8 38.Kh2 Qd8–+) 38.Rc6?? (38.Rb7+=) 38...Red8 (38...Rd4 39.Rh6 Rd3 (worse is 39...gh6 40.Qd4 Qe5 41.Qb4+/–; worse is 39...Qh6 40.Qf3 Qd2 41.Re2 Qe2 42.Qe2 Re2 43.b6–+) 40.Rh5 Rd1 41.Rc5 Re1 42.Kh2 Rh1 43.Kh1 e1Q 44.Kh2 Qf2 45.Kh1 Re1) 39.Kh2 (39.Rc4 b3 40.Rb4 b2+/–) 39...h6 (39...Qf7!? 40.Rc4 Rh5+=) 40.Rc4+/– b3 41.b6 R5d7 (41...Qf7 42.Rb4+/– (42.Qb3 Rd4 43.Rd4 Qb3 44.Rd8 Kh7–+)) 42.Rb4 (better is 42.Qb3!? Qa5 43.Rcc1+–) 42...Qa5 43.Qb3 (43.Qc3 b2 44.Qb2 Rb7+=) 43...Rb7 44.Rb1 (44.Rc1 Re8 45.Qb1 Kg8+/–) 44...Rf8 (44...Re8!? 45.Qf3 Rbb8=) 45.Qe3+/– Rff7 (45...Rfb8 46.d5 Qd5 47.Rb5+/–) 46.Qe8 (46.Qc3 Rfd7 47.Re1 A) 47...Rb6?? 48.Qc8 Kh7 A1) 49.Qd7? Qb4 (49...Rb4?! 50.g4–/+) 50.Rg1 e1R 51.Qf5 Rg6 52.Qf3 Rf6 53.Qd3 Kg8–+; A2) 49.Rb6 Qb6 50.Qd7+–; B) 47...Rd8+–) 46...Kh7 47.Qe5?? (47.Qb5 Rf5 48.Qd3 Kh8+–) 47...Qa6?? (better is 47...Qe5 48.de5 Rfd7=) 48.Qb5+– Qa8 49.a5 Rf6 50.d5 Qd8 51.R4b3 Qd6 (51...Rf5 52.Qb4 Qe8 53.d6+–) 52.Qd3 (52.Re3 Qf8+–) 52...g6 53.Qc3 Qd5? (53...Qe7+–) 54.Qf6 Qb3 (54...Rf7 55.Rb5 Qb7 56.Qf7 Qf7 57.b7+–) 55.Rb3 e1Q 56.Qf3 Re7 (56...Qe7 57.a6 Rb8 58.b7+–) 57.b7 1–0. Petrochenko,Maria (2035) – Orlov,Konstantin (2220), Chigorin Memorial, 2016.

11.h3 Rfe8 12.Qc2 a6 13.ba6 Ra6 14.d4 =+.

11.h3 Rfe8 12.Qc2 Rac8 13.a4 e5 14.cd5 Nd5 (15.a5 Nb4=). Bothe,E – Bakkers,M, corr SOK–90–57, 1990.

11.Qc2 Rfd8

12.Rfc1 a6 13.cd5 Nd5 14.ba6 Ra6 15.d4 =.

12.Rfc1 e5 13.cd5 Bd5 14.a4 a5 15.Ng5 (15.e4 Bb7=) 15...h6 (15...Re8 16.Bf3=) 16.Nge4 Ne4 17.Ne4 (17.de4 Bb7=) 17...Be4 (17...Rac8 18.Bf3=) 18.de4+= Nf6 19.Rd1 Ra7 (19...Qb7 20.Bc4+=) 20.Rd2 Qe7 21.Rad1 Rb7 ½–½. Pech,Jaroslav – Nemec,Zdenek, corr or01–011, 2001.

12.Rfc1 e5 13.cd5 Bd5 14.a4 a6 15.ba6 Ra6 16.d4 =.

12.cd5 ed5 13.Rfc1 Re8 =.

12.h3 Rac8 (12...a6 13.a4=) 13.a4 Ne5 (13...a6 14.ba6 Ba6 15.Bc3=) 14.Ne5 (14.a5 h6+=) 14...Be5 15.Be5 Qe5 16.Bf3 (16.a5 h6+=) 16...Qc7 17.Rfd1 ½–½. Grossmann,Philipp (1905) – Huettl,Guenther (1980), Regionalliga NO, 2004.

11.Qc2 e5

12.cd5 Bd5 13.Nc4 a6 14.ba6 b5 15.Nd6 Qd6 =.

12.cd5 Bd5 13.e4 Bb7 14.Nc4 Rfe8 15.a4 a6 16.Bc3 a5 17.Qb2 g6 (17...Rad8 18.g3+/–) 18.g3 Re7 19.Nh4 Nf8 (better is 19...Re6!?+/–) 20.f4!+– N6d7 (20...ef4 21.Bf6 Pinning (21.Bf6 Deflection)) 21.f5 f6 (21...Ree8 22.Bg4+–) 22.fg6 hg6 23.Bg4 Kg7 (23...Rg7 24.Ng2+–) 24.Qe2 Nb8 (24...Rf7 25.Bf5! g5 26.Bd7 (26.Nd6?! Qd6 27.Ng2 Ne6+–) 26...Rd7 27.Rf6 Kf6 28.Rf1 Kg7 29.Nd6+–) 25.Bd2 (25.Bh5 Nbd7 26.Bg6 Ng6+–) 25...Rf7 (25...Nbd7 26.Bh5! gh5 27.Nd6 Kg8+–) 26.Bf5! (26.Nd6?! Qd6 27.Bf5 g5+–) 26...g5 27.Qg4 Be7 28.Rf3 Kg8 29.Raf1 Rg7 30.Ng2 Nbd7 31.h4 Rd8 32.Kf2 gh4 33.Qh4 Ng6 34.Qh5 Ndf8 35.Bh6 Bc8 36.Bg7 Kg7 37.Rh1 Bf5 38.ef5 e4 39.Qh6 Kg8 40.fg6 (40.fg6 Qg3 41.Rg3 e3 42.Nge3 Ng6 43.Qg6 Kf8 44.Qg8#) 1–0. Dzieniszewski,Andrzej – Dobosz, Slupsk, 1985.

12.h3 d4

13.a4 a6 =+.

13.Rfb1 a6 =+.

13.e4 g6 14.Rfe1 Nh5 15.Bc1 a6!? =.

13.e4 g6 14.Rfe1 Nh5 15.Bc1 f5 16.ef5+= gf5 17.Nd4 cd4 (17...Nf4 18.N4f3+=) 18.Bh5 Nf6 (18...Nc5!? 19.Bb2 Rad8+=) 19.Bf3+/– Rae8 20.Bb7 Qb7 21.Nf3 Qf7? (better is 21...Qg7+/–) 22.Bh6+– Qh5 (22...Nd7 23.Bf8 Nf8 24.Qd2+–) 23.Bf8 Kf8 24.c5 bc5 25.Ne5! Kg7 26.Nc6 Rg8 27.Re6 Bf4 28.Qc5 (28...Qg5 29.Qd4+–) 1–0. MrkT – rsand2, internet, 2005.

13.e4 g6 14.Rfe1 Nh5 15.Bc1 f5 16.ef5+= Rf5? 17.g4 Rf3 18.Bf3 Bf3 19.Nf3 +–.

13.e4 Nh5 14.Bc1 =+.

13.e4 Nh5 14.Qd1 Nf4–/+ 15.Kh2 f5 16.Kg1 –/+.

13.e4 Nh5 14.Qd1 Nf4–/+ 15.Kh2 Nf6 16.g3 (16.Bc1 a6=+) 16...Ne2–/+ 17.Qe2 Qd7 (17...a6 18.ba6 Ra6 19.Rfb1–/+) 18.Ng1 (18.Rfb1 Bc8 19.Qf1 Qe6–/+) 18...Bc8 (18...a6 19.a4–/+) 19.Ndf3 (19.a4 a6–/+) 19...h6 (19...a6 20.ba6 Ra6 21.Rfb1–/+) 20.Bc1 Kh7 (20...a6 21.ba6 Ba6 22.Nd2–/+) 21.Ne1 (21.Bd2 a6 22.ba6 Ra6–/+) 21...Qe6 (21...a6 22.Rb1–/+) 22.f4 ef4 (22...a6 23.ba6 Ra6 24.Rb1–/+) 23.Bf4 (better is 23.gf4!? a6 24.e5+=) 23...Bf4=+ 24.Rf4 Bd7 (24...Re8 25.Qg2 Bb7 26.Ngf3=+) 25.Ng2 g6 (25...a6 26.e5 Ng8 27.ba6=+) 26.Raf1= Nh5 27.R4f3 Ng7 28.Nf4+= Qe5 29.Qd2 f5= 30.Nfe2 Rfe8 31.ef5 Bf5 32.Nf4= g5 33.Ng2 Qd6 34.Rf5+/– Nf5 35.Rf5 Rf8 36.Qf2 Rae8 37.Rf7 Kg8 38.Rf8 Rf8 39.Qe2 Qf6 40.Qe4 Qf7 41.a3 Qf5 42.Qe2 Qf2 43.Qe4 Qf7 44.a4 Re8 45.Qc6 Kg7 46.Qd6 Re6 47.Qd5 Rf6 48.Qe5 Qe6 49.Qc7 Rf7= 50.Qb8 h5 51.Kh1 Rf1 52.Qa7+– Kg6 53.Kh2 Rd1 54.Qb7 Rd3 55.Qc6 Kf6 56.Nf3 g4? 57.Nf4+– Qc6 58.bc6 Re3 59.Nd5 Ke6 60.Ne3 gf3 61.Nd1 (61...Kd6 62.g4 hg4 63.hg4 Kc6 64.Kg3+–) 1–0. Wiede,Friedrich – Jussupow,Alexander, GER–ch U10 Willingen, 2003.

13.e4 Nh5 14.Rfe1 Nf4 =+.

11.Qc2 Rfe8

12.a4 a6 13.cd5 ed5 14.ba6 Ra6 15.Rfc1 =+.

12.a4 Rad8 13.h3 a6 14.ba6 Ba6 15.cd5 ed5 16.Rfc1 =.

12.a4 Rad8 13.h3 Qc8 14.a5 Bb8 15.a6 Ba8 16.cd5 ed5 17.Bd1 Qc7 18.Rc1 Re6 (19.Be2 Qd6=; 18...Qd6 19.Be2=). Bothe,Erhard – Sternik,Ryszard, corr SOK–90–57, 1990.

12.Rfb1 a6 =.

12.h3 a6 13.cd5 ed5 14.a4 =+.

12.h3 Rac8 13.a4 d4 (13...Ra8 14.a5=) 14.ed4+= cd4 15.Nd4 e5 16.Nf5 e4 (16...Bb4 17.Rad1+=) 17.d4 e3 (17...Bb4!?+/–) 18.Ne3+– Re3? (better is 18...Rcd8+–) 19.fe3 Bh2 (19...Re8 20.Qb3+–) 20.Kh1 Bg2 (20...Re8 21.Bf3 Bd6 22.e4+–) 21.Kg2 Qg3 22.Kh1 Bg1 23.Nf3 Qh3 (23...Be3 24.Bd3 Qh3 25.Qh2 Qh2 26.Nh2 Re8+–) 24.Kg1 Ng4 25.Bd3 Ne3 26.Qh2 Qg4 (26...Qh2 27.Kh2 Nf1 28.Rf1 h6+–) 27.Kf2 Nf1 (27...Nf5 28.Rh1 h5 29.Qh5+–) 28.Qh7 Kf8 29.Ba3 (29.Ba3 Nc5 30.Bf1+–) 1–0. wiking – serrato987, queenalice.com, 2009.

12.h3 Rad8 13.a4 a6 14.ba6 Ba6 15.Rfb1 =.

12.h3 Rad8 13.a4 Ne5 14.a5 dc4 15.Ne5 Be5 16.Be5 Qe5 17.Nc4 Qb8 +=.

12.h3 Rad8 13.a4 Ne5 14.Ne5 Be5 15.a5 (15.Be5 Qe5 16.Bf3 Qc7=) 15...Bb2 16.Qb2 Ba8 (16...e5 17.ab6 ab6 18.Ra7=) 17.ab6 ab6 18.Bf3 (18.Ra6 Bb7 19.Ra7 Ra8=) 18...e5 19.e4 (19.Qc2 Qd6=) 19...d4 (19...dc4 20.dc4 Rd4 21.Rfe1=+) 20.Kh2 (20.Qc2 Bb7=) 20...h6 (20...Bb7 21.Kg1=) 21.g4 (21.Kg1 Bb7=) 21...Nh7 (21...Bb7 22.h4=+) 22.h4 (22.Bg2 Ng5=+) 22...Qe7–/+ 23.Kg3 Nf8 24.Rh1 (24.h5 Ne6–/+) 24...Ng6 25.Nb3 Bb7 26.Nc1 Ra8 27.Ra8 Ra8 28.Ne2 Qd8 29.h5 Nf8 30.Ra1 Ne6 31.Qc1 Qc8 32.Bg2 Qd8 33.Ra3 Kf8 34.Qa1 Ra3 35.Qa3 Qa8 36.Qa8+= Ba8 37.f4 Nf4 38.Nf4 ef4 39.Kf4 Ke7 40.g5+= hg5 41.Kg5 Bb7 42.Bh3 Ba8 43.Bf5 Bb7 ½–½. Holmberg,Krister – Hultquist,Ola, corr SSKK 2–770, 1993.

11.h3 a6

12.a4 ab5 13.ab5 Ra1 14.Qa1 Ra8 15.Qb1 e5 16.cd5 Bd5 17.Qc2 (17.Nc4 Bc4 18.dc4 e4=) 17...Ra2 (17...Ra5 18.Nc4 Rb5 19.Bc3=) 18.Ra1= Qa7 (18...Ra1 19.Ba1 Bb7 20.Qb2=) 19.Qb1 (19.Ra2 Qa2 20.Ng5 Bc7=) 19...Ra1 20.Qa1 Qa1 21.Ba1 Ne8 (21...Bc7 22.Kf1=) 22.Nc4 e5 seems the pivot of the position 22...f6 23.Nfd2 (worse is 23.Nd6 Nd6 24.Nd2 Nb5–/+) 23...Kf7 24.Bg4 (24.Bc3 Be7=) 24...Be6 25.Ne4 (25.Bf3 Be7=) 25...Be7 (25...Bg4 26.hg4 Ke6 27.Kf1=) 26.Be6 Ke6 27.Nc3 f5 (27...Nd6 28.Bb2=) 28.Kf1 Nef6 29.e4 (29.Ke2 g6=) 29...g6 30.Bb2 (30.Ke2 Bd6=) 30...Bd8 (30...h6 31.Ke2=) 31.Bc1 Ne8 32.Ke2 Nd6 33.f3 Nc4 34.dc4 Kd6 35.ef5 gf5 36.g4 Ke6 ½–½. Franke – Pamperin,Gerhard, corr DDR–ch, 1985.

12.ba6 Ba6 13.Qc2 b5 14.Rfc1 bc4 15.dc4 e5 16.e4 d4. Dopper.

12.Qb3 ab5 13.cb5 Ra7 14.Rfc1 Rfa8 15.a4 h6 (15...e5 16.Qc2+=) 16.Qc2 e5 17.e4 (17.Nh4 Ne8=) 17...d4 (17...Nh5!?–/+) 18.Nc4= Ne8 19.Ra2 Qd8 20.Rca1 (20.Ra3 Bc7+=) 20...Bc7+= 21.Bc1 Qe7 22.Qb3 (22.Bd2 Nd6=) 22...Qe6 (22...Nd6 23.Nd6 Qd6 24.Nd2+=) 23.Nh4= Ndf6 24.Nf5 White is in command 24...Kh7 (24...Bc8 25.Qc2=) 25.Qb2 (25.a5!?+=) 25...Bc8 (25...Bd5 26.Ng7 Ng7 27.ed5 Nd5 28.Bd2=) 26.Bd2 Ng8 (26...Nd7 27.Bg4 Qf6 28.a5=) 27.a5+= Qf6 (27...ba5 28.b6 (28.Na5?! Qf6=; worse is 28.Ba5 Ba5 29.Ra5 Ra5 30.Ra5 Ra5 31.Na5 Qb6+=) 28...Rb7 29.Bg4 Rb6 30.Qc2+/–) 28.ab6+/– Ra2 29.Ra2 Ra2 30.Qa2 Bb6 31.Nb6 Qb6 32.Qf7 Qb5 33.Bh6 Nh6+= 34.Nh6 Nd6 35.Qe7 Ne4 36.Qe5 Qb1 37.Kh2 Nf2? 38.Nf5+– Qb7 39.Ne7 g6 40.Qf6 Qa6 41.Qf7 Kh6 42.Qf8 Kh7 43.Nc8 Nd3 44.Bd3 Qd3 45.Qc5 Qe3 46.Qe7 Qe7 47.Ne7 (47.Ne7 d3 48.Nd5+–) 1–0. Kreuzer,Uwe – Rohrbacher, Mannheim, 1986.

12.cd5 ed5 13.a4 =+.

12.cd5 Bd5 13.ba6 Ra6 14.e4 +=.

11.h3 Rad8

12.a4 e5 13.cd5 Nd5 14.Qb3 N7f6 15.Nc4 e4 16.Nfd2 ed3 17.Bd3 (< 17.Qd3 Bh2 18.Kh1 Ne3 19.Qe3 Rfe8=+) 17...Nb4 18.Be2 (< 18.Nd6 Rd6 19.Bh7 Kh7=+) 18...Be7 19.a5 Qd7 (19...Bd5!?=) 20.ab6+/– ab6 21.Ra7 Nbd5 22.Bf3 Qc8 23.Ne4 Ne4 24.Be4 Qb8 (24...Qe6!? 25.Bh7! Kh7 26.Rb7 Rb8 27.Qc2 Kg8+–) 25.Rfa1+– Rd7 (25...Rfe8+–) 26.Be5 Qd8 27.Bf5 (27...Rc7 28.Qd3+– (28.Bc7?! Qc7 29.Be4 Rd8+–)) 1–0. Pommerel,Wim – Howard, CiF–BCCA, 1989.

12.a4 e5 13.cd5 Nd5 14.Nc4 a6 15.ba6 Ba6 16.Qb3 =.

12.a4 e5 13.cd5 Nd5 14.Nc4 f5 15.a5 Ba8 16.ab6 (16.Qc2 Bb7+=) 16...ab6= 17.Qb3 Kh8 18.Ng5 Rde8 19.Bh5 (19...g6 20.Nd6 Qd6 21.Bf3+=). Staberg,Karl_Arne – Friberg,Roland, corr SSKK 2–772, 1992.

12.Rc1 e5 13.Qa4 =.

12.cd5 Bd5 13.e4 Bb7 =.

12.Rc1 Rfe8

13.d4 e5 14.de5 Ne5 15.Qc2 =.

13.d4 Nf8 14.Qa4 N8d7 15.Rfd1 = (15.Qa7 Ra8 16.Qa8 Ra8–+).

13.d4 Nf8 14.Qa4 Ng6 15.cd5 (15.Qa7?? Ra8 16.Qa8 Ra8–+) 15...ed5 (15...Bd5 16.dc5 bc5 17.Bf6 gf6 18.Ne4 Be4 19.Qe4+=) 16.dc5 bc5 17.Nb3 (17.Bf6 gf6 18.Nd4 Qb6+=) 17...Qb6 (17...Ne4=) 18.Bc3 (18.Bf6!? gf6 19.Rfe1=) 18...Re4=+ 19.Qe4? (better is 19.Qa5!? d4 20.ed4 Re2 21.dc5 Bc5 22.Nc5 Bf3 23.gf3=+) 19...de4–+ (< 19...Ne4 20.Ba5+/–) 20.Ba5 ef3 21.Bb6 ab6 22.Bf3 Bf3 23.gf3 Ne5 24.Kg2 Ra8 25.Rfd1–/+ Be7 26.Rc2 Ra4 27.Nd2 Rb4 28.Rb1 Nd5 29.Rb3 g5 30.Ra3 Rb5 31.Ra8 Kg7 32.Ne4 c4 33.Rb8 h6 34.Nd2 Rc5 35.a4 Bf6 36.Ne4 Rc6 37.Nf6 Kf6 38.e4 Nb4 39.Rc3 Na2 (40.Rc2 Nd7–+; better is 39...Nbd3!? 40.Rd8–+) 0–1. Nemec,Zdenek – Belis,Rudolf, CSSR ZK, 1990.

13.d4 Nf8 14.cd5 Bd5 15.Qc2 Ng6 +=.

13.cd5 ed5 14.a4 a6 =.

10.Nbd2 Rc8

11.a4 Bb8 12.a5 Qc7 (12...ba5 13.Bc3+=) 13.cd5+= ed5 14.a6 (14.Qa4 Rfe8+=) 14...Ba8 15.Qa4 (15.Rc1 Rfe8+=) 15...Rfe8= 16.Qh4 (16.Rac1 Qd6=) 16...d4 17.e4 (17.Nc4 Bd5=) 17...Nf8+= 18.Qh3 Bd5 19.ed5 Re2 20.Rfc1 (20.d6!? Qd7 21.Qd7 N8d7 22.Nc4+=) 20...Nd5–/+ 21.Bd4 Ne6 22.Nf1 (22.Bb2 Nb4 23.Ra3 Rd8–+) 22...Rd8 (22...Ndf4 23.Qf5 Qd8 24.Be3 Qd3 25.Nd4 Qf5 26.Nf5–+) 23.Be3–/+ Ndf4 (23...Qd7 24.Rab1–/+) 24.Qh4 (24.Qg4 Nd3 25.Rd1 Rb2–/+) 24...Re3 (24...Nd3 25.Rd1–/+) 25.Ne3+= Ne2 Black launches an attack 26.Kh1 Nc1 27.Rc1 Rd3 28.Qe4 (28.Re1 Qd7–/+) 28...Rd4 29.Qa8 (29.Qf5 Rd8 30.g3 Qe7–/+) 29...Rd8 30.g3 Qd7 31.Rd1 Nd4 32.Qe4 Re8 33.Qd3 Be5 34.Nd4 Bd4 35.Nf5 Qd5 36.Kg1 g6 37.Nd4 cd4 38.h3 Rd8 39.Rc1+= Qe5 40.Kf1 Rd5 41.Qa3 Qe6–+ 42.Re1 Qh3 43.Kg1 Rd8 44.Re7 d3 45.Qa2 Qf5 46.Qd2 Rd7 47.Re8 Kg7 48.Qc3 f6 (48...f6 49.Re1 Qb5–+) 0–1. Brinkmann,Wilhelm – Weigel,Freida, corr FRG jub–B, 1970.

11.a4 Qc7 12.cd5 ed5 13.a5 =.

11.a4 Re8 12.cd5 ed5 13.Qb3 Bb8 14.Rfc1 Bd6 =.

11.a4 Re8 12.cd5 ed5 13.Qb3 Bb8 14.g3 Ng4 15.Rfc1 h5 (15...Bd6 16.h3 Nge5 17.Qc2=+) 16.Bf1 (16.h3 Ngf6+=) 16...h4 (16...d4 17.ed4 Bf3 18.Nf3 Qf6+/–) 17.Bh3+/– (< 17.gh4 d4 18.e4 Nge5=) 17...Nh2 (17...Nge5 18.Nh4 d4 19.ed4 cd4 20.Rc8 Qc8 21.f4+– (21.Bd4?! Qc7+–)) 18.Nh4 (better is 18.Nh2 hg3 19.Nhf3+/–) 18...Nf8?? (18...g5 19.Nf5 (19.Kh2?! gh4 20.Qd1 hg3 21.fg3 f5=) 19...g4 20.Bg2 (20.Kh2?! gh3 21.Kh3 Qg5=) 20...Nf3 21.Nf3 gf3 22.Bf3+/–) 19.Nf5 (19.Bc8 Bc8 20.Bg7 Kg7 21.Qc3 Kg8=+) 19...Qg5?? (19...c4 20.Qc2 d4 21.Bd4 cd3 22.Qd3 Rc1 23.Rc1 Nf3 24.Nf3 Bf3 25.Ng7 Be4+–) 20.Kh2+– g6 (20...Be5 21.f4 Qh5 22.g4 (< 22.fe5 Qe2 23.Kg1 Qd2+–) 22...Bf4 23.ef4+–) 21.Nf3 (better is 21.Ng7!? c4 22.dc4 Red8 23.Bc8 Rc8+–) 21...Qh5 22.N5h4 (22.Qc3 d4 23.N5d4 cd4 24.Qd4 Ne6=+) 22...g5 (22...c4 23.Qc3 d4 24.Qd4 c3 25.Rc3 Rcd8+–) 23.Bc8 Rc8 24.Kg1 (24.Qc3 d4 25.ed4 Bf3 26.Kg1 gh4 27.dc5–/+) 24...gh4 25.Nh4 Re8 (25...Ng6 26.Ng6 fg6 27.Qc3–+) 26.Qd1 (26.a5 Ne6+–) 26...Qg5 (26...Qd1 27.Rd1 c4 28.dc4 dc4 29.Rac1+–) 27.Qf3 (27.Nf3 Qh5+–) 27...Re6 (27...a6 28.Nf5+–) 28.a5 Rh6 29.Qf5 Qd8 (29...Ne6 30.Qg5 Ng5 31.Nf5+–) 30.ab6 (30.Qg4 Ng6+–) 30...ab6 31.Ra4 (31.Qg4 Ng6+–) 31...Bc8 32.Rg4 Ng6 33.Qg5 (33...Qg5 34.Rg5+–) 1–0. Johansson,Ragnar – Hall,R, corr SWE–FIN, 1992.

11.a4 Re8 12.cd5 ed5 13.Qb3 Ne5 14.Be5 Be5 15.Ne5 Re5 16.Qc2 =.

11.a4 Re8 12.cd5 Bd5 13.e4 +/–.

11.Qa4 a6 =.

11.Qa4 Ra8 =.

11.Rc1 a6 12.ba6 Ba6 13.Qb3 =.

11.Rc1 Qe7 12.Qa4 (12.Qc2 Rc7=) 12...Bb8 (12...Ra8 13.a3=) 13.Rfe1 (13.Rfd1 Rfd8=) 13...Rfe8 14.Bf1 (14.cd5 ed5 15.a3 Rcd8=) 14...e5 15.cd5 Nd5 16.Rc4 (16.Be2 Red8=) 16...N7f6 (16...Nc7 17.Ne4=) 17.Nh4 (17.Ne4!?=) 17...Qd7 18.Qd1 (18.Nhf3 Nb4 19.d4 ed4 20.Bd4 a6 21.Rb4 A) worse is 21...cd4 A1) 22.ba6?! Bc6 23.Bb5 de3 24.fe3 Re6+=; A2) 22.ed4?! Re1 23.Ne1 Nd5=; A3) 22.Nd4?! Nd5 23.ba6 Bc6 24.Nc6 Nb4 25.Qb4 Qc6+= (25...Rc6? 26.Bb5+–); A4) 22.Rd4 Qf5 23.ba6+–; B) 21...cb4 22.Qb4 a5=) 18...Nb4 (18...Qb5 19.Qb1–+) 19.a4 (19.d4!? ed4 20.ed4 Re1 21.Qe1–/+) 19...Nd3–+ 20.Bd3 Qd3 21.Rc3 Qd5 (21...Qd7 22.Nc4–+) 22.e4–/+ Qd7 (22...Qd8 23.Rc4–/+) 23.Qc2 Rcd8 24.Nf1? (better is 24.Nhf3–/+) 24...Qg4–+ 25.Nf5 (25.Nf3 Be4 26.Qb3–+) 0–1. Gross,Wilhelm – Merten,Rainer, xxv/28, 1994.

11.Qc2 a6 =.

11.Qc2 Bb8 12.h3 (12.Qa4 Bd6+=) 12...Qe7 (12...Bd6 13.a4+=) 13.Rfe1 (13.Qa4 Ne8+=) 13...Rfd8 (13...Bc7 14.a4=) 14.a3 (14.a4 Bc7+=) 14...h6 (14...Bc7 15.a4=) 15.Bc3 (15.a4 Bc7+=) 15...e5 16.cd5 Nd5 17.Bb2 Nf8 (17...Bc7 18.Nc4=) 18.Nc4 Ng6 19.g3 (19.Nfd2 Bc7=) 19...Re8 (19...Qe6 20.e4 Nf6 21.Kg2=) 20.e4 Nf6 21.Bf1 (21.a4 Qd7+=) 21...Rcd8 (21...Bc7 22.a4=) 22.Rad1 (22.a4 Qd7+=) 22...Nd7 (22...Qe6 23.Qa4=) 23.Bc3 (23.a4 a5+=) 23...Ndf8 (23...a6 24.ba6 Ba6 25.a4=) 24.Qb2 (24.h4 h5+=) 24...f6 (24...Ne6 A) 25.Be5?? Ng5 26.Ng5 Ne5–+ (26...Be5?! 27.Ne5 Ne5 28.f4–+); B) worse is 25.Nce5 Ng5 26.Ng5 Ne5+= (worse is 26...Be5 27.Nf3+=); C) 25.Bd2=) 25.a4 (25.h4 Ne6+=) 25...Bc7 (25...Ne6 26.Bg2+=) 26.h4 (26.a5 Ne6+=) 26...Bc8 (26...Ne6 27.h5 Ngf8 28.a5+=) 27.Ne3 (27.Be2 Qf7+=) 27...Be6 (27...Qf7 28.Nd5+=) 28.h5 (28.Ra1 Qd7+/–) 28...Nh8 29.Nh4 (29.Nd5 Qf7+=) 29...Nf7 30.Bg2 (30.Nhf5 Qd7+/–) 30...Ng5 31.Rf1 Qf7+= 32.Qe2 Bb3 33.Rb1 Be6 34.Nhf5 Qd7 35.Rfd1+– Bf7 36.Qg4 Nfe6 37.Rd2 Kh8 38.Bf3 Nf3 39.Qf3 Rg8 40.Nh6 Ng5?? 41.Nf7+– Qf7 42.Qg4 Rd7 43.Kg2 Rgd8 44.Nd5 Bb8 45.Rh1 Rd6 46.Qf5 Kg8 47.a5 Rd5+/– 48.ed5 Qd5 49.f3 Qb3 50.Rc1 Qb5 51.h6 Qc6 52.ab6 ab6 53.Rh1 Bd6 54.Ra2 Qb7? 55.hg7 Qg7?? 56.Bd2+– Nf7 57.Qe4 Bf8 58.Ra7 Rd4 59.Qe2 Qg6+= 60.Ra3 c4= 61.Ra8 cd3 62.Qf2+= b5 63.Be3 Rc4= 64.Rc1 Kg7 65.Rc4 bc4 66.Rc8 0–1. Mittelbachert,Ulrich – Jaennekes,Oliver, Ruhrgebiet, 1999. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c5 5.e3 Nbd7 6.Be2 Bd6 7.c4 0–0 8.d3 b6 9.Nbd2 Bb7 10.0–0 Rc8)

11.Re1 Re8 12.Bf1 (12.Qc2 Ra8=) 12...Bb8 (12...Qc7 13.Be2=) 13.Rc1 Qc7 14.g3 (14.cd5 ed5 15.Qa4 Ne4=) 14...Rcd8 (14...e5 15.cd5 Bd5 16.Nc4=) 15.d4 Qd6 16.Ne5 (16.cd5 ed5 (16...Bd5? 17.e4+–) 17.Ne5 Qe6 18.Nd7 Nd7=) 16...Rc8 (better is 16...cd4!? 17.Nd7 Qd7 18.Bd4 e5+=) 17.Bg2= Qe7 (17...a6 18.Nd7 Nd7 19.Qg4 cd4 20.ba6+= (worse is 20.ed4 ab5 21.c5 Qf8–/+)) 18.Nef3 (18.Nd7 Nd7 (worse is 18...Qd7 19.dc5 bc5 20.Bf6 gf6 21.Nb3+/–) 19.Nb3 Red8=) 18...h6 (18...cd4 19.Nd4 Nc5 20.cd5 Nd5 21.Bd5 Bd5 22.e4+=) 19.Qb3 (19.Ne5 Ne5 20.de5 Nd7=) 19...Red8 (19...cd4 20.ed4 Bd6 21.Ne5=) 20.Red1 (20.Qa3 dc4 21.e4 Qe8 22.Rc4 cd4 23.Rc8 Rc8=) 20...Kh8 (20...cd4 21.Ba3 Nc5 22.Nd4=) 21.a4 (21.cd5 Bd5 22.Qc2 Kg8=) 21...cd4 22.ed4 dc4 23.Nc4 Nd5 24.Ba3 Qe8 (24...Qf6 25.Nd6 Bd6 26.Bd6=) 25.Nfe5 N7f6 26.Ne3 (26.a5 Ba8=) 26...Rc1 (26...Ne3 27.Qe3 Bg2 28.Kg2 Be5 29.de5=) 27.Rc1+= Ne3 28.Bb7 Ned5 (28...Nf5 29.Bb2+=) 29.Nc6 (29.Bc6 Qg8+=) 29...Rd7= 30.Ba6 Rc7?? (better is 30...Nc7=) 31.Bd6+– Qd7 32.Bc7 (32.Be5 Rc6 33.bc6 Qd8+–) 32...Qc7 33.Qc2 Nd7 34.Nb8 Qb8 35.Qe4 Qd6 36.Rc8 Nf8 37.Qe5 Qe7 38.Qb8 Qb4 39.Rf8 Kh7 40.Kg2 (40.Kg2 Qd4 41.Rf7+–; 40.Rf7 Qd4 41.Qa7 Nc3+–) 1–0. Gross,Wilhelm – Merten,Rainer, xxv/24, 1994.

11.h3 Ra8 12.cd5 ed5 13.Nh4 =.

11.h3 Re8 12.a4 e5 13.cd5 Bd5 14.e4 Be6 15.Ng5 Nf8 (15...Qe7 16.Ne6 Qe6 17.Qc2=) 16.f4 (16.a5 a6=) 16...N6d7+= 17.Ne6 (17.Nc4 Bc4 18.dc4 Nf6=) 17...Ne6= (< 17...Re6 18.Bg4+/–) 18.Nc4 Qc7 19.f5 (19.fe5 Ne5 20.Bh5 g6 21.Ne5 Be5 22.Be5 Qe5=+) 19...Nd4 20.g4 (20.Bd4 cd4 21.Rc1 Be7=) 20...Be7=+ 21.Bc1 (21.Bd4 cd4 22.a5 Bb4=+) 21...h6 (21...Qd8 22.Be3=+) 22.Be3 (22.Bb2 Bg5=+) 22...Red8 (22...Bg5 23.Bg5 hg5 24.Rc1–/+) 23.Ra2 (23.Bd4 cd4 24.Qe1 Nc5=+) 23...Bh4 (23...Bg5 24.Bd4 cd4 25.a5=+) 24.Rd2 (24.Bd4 cd4 25.Kg2 Bg5=+) 24...Nf6 (24...Bg5 25.Bg5 hg5 26.Qe1–/+) 25.Bf2 (25.Rb2!?=+) 25...Bf2–/+ 26.Rf2 Ne2 (26...a6!?–/+) 27.Qe2=+ Rd4 28.h4 Nh7 29.f6 Nf6–+ 30.g5 hg5 31.hg5 Nh7 32.Qg4 Qd7?? 33.Qd7+= Rd7 34.Ne5 Re7 35.Nc6 Rc6 36.bc6+/– Ng5 37.Rf5 Ne6 38.Rd5 Rc7 39.Rd6 Kf8 40.Rf2 Ke7 41.Rd7 Rd7 42.cd7 Nd8 43.Rb2 Kd7=+ 44.a5 Kc6–/+ 45.ab6 ab6 46.Kf2 Ne6 47.Ke3 b5 48.Kd2 b4 49.Ra2 Nc7 50.Ra1 f6 (51.Ke3 Kd6–/+) 0–1. Petersen,J – Gaida,Henryk, corr ICCF, 1994.

11.h3 Re8 12.Rc1 Ra8 =.

10.Nbd2 e5

11.cd5 Nd5

12.Ne4 Qe7 =.

12.Nc4 Qe7

13.a4 a6 =.

13.Nfd2 Bc7 14.Bf3 N7f6 15.Ne4 a6 16.Qb3 Rfd8 =.

13.Nfd2 Bc7 14.Bf3 N7f6 15.Ne4 Ne4 16.de4 Nf6 =.

13.Nfd2 Bc7 14.Bf3 N7f6 15.g3 a6 16.Qb3 =+.

13.Nfd2 Bc7 14.Bf3 N7f6 15.g3 Rad8 16.a3= Qe6 17.Qc2 Rfe8 18.Rae1 Nd7 (18...a6 19.ba6 Ba6 20.Ne4=+) 19.d4 (19.Rb1!?=) 19...ed4–/+ 20.ed4 Qh3 (20...Qe1!? 21.Re1 Re1 22.Kg2 h6=+) 21.Qa4 Bb8 22.Bg2?? (better is 22.Re8 Re8 23.Rd1=) 22…Qg2!? (23.Kg2 Nf4 24.Kg1 Nh3#) 0–1. Andersson,Lars H – Casny,G, corr ICCF, 1991.

13.Nd6 Qd6 14.Qb3 a6 15.ba6 Ba6 16.Rfd1 =.

13.Nd6 Qd6 14.Qb3 Rfe8 15.a4 Nb4 =.

13.Nd6 Qd6 14.Qb3 Rfe8 15.Nd2 Nc7 16.Bf3 (16.Ne4 Qg6=) 16...Bf3=+ 17.Nf3 Qd5 18.Qd5 Nd5 19.Nd2 (19.a4!?=+) 19...Nb4–/+ 20.d4 (20.Bc3 Nd3 21.Nc4 e4–/+) 20...ed4 (20...Nd3 21.Bc1–/+) 21.ed4 Re2 (21...Nd3 22.Bc1–/+) 22.Nc4 (22.Rad1!?=+) 22...Nd3–/+ 23.Rab1 (23.Ba3 a6 24.dc5 ab5–+ (< 24...bc5 25.Rfd1 Rae8 26.ba6+/–)) 23...cd4 (23...a6 24.dc5 ab5 25.Nb6 Nb6 26.cb6 Rb2 27.Rb2 Nb2 28.Rb1–/+) 24.Rfd1–/+ N7c5 (24...Nf2 25.Rd4 Nc5 26.Kf1=) 25.Bd4=+ Ra2 26.Bc5 Nc5 27.Ra1 Ra1 28.Ra1 Nb3 29.Ra4 (29.Rd1 Rc8=+) 29...Rc8 30.Ra7 (30.f4 Kf8=+) 30...g6 (30...f5 31.Ra4 Na5 32.Ne3 Rc1 33.Nf1–/+) 31.Ra4 Na5 32.Ne3 Rc1 33.Nf1 Rb1 34.g4 Rb5 35.Rd4 (35.Ne3 Nc6–/+) 35...Rb1 (35...Rc5 36.Ne3–/+) 36.Kg2 Nb7 (36...Kg7 37.Nd2 Nb3 38.Nb3 Rb3 39.g5–/+) 37.Ne3 (37.Nd2 Rd1–/+) 37...Nc5 38.Rc4 (38.h4 b5–/+) 38...Kg7 39.Nd5 Nd3 (39...Ne6 40.Kf3–/+) 40.g5? (better is 40.Rc3 Ne1 41.Kf1 Nf3 42.Kg2–/+) 40...Rb5–+ (41.Ne3 Rg5 42.Kf1 Rc5–+) 0–1. Wolf,M – Pichler,Manfred, corr DDR–Cup6, 1981.

13.Nd6 Qd6 14.d4 ed4 15.ed4 Nf4 16.dc5 Qc5 =+.

12.e4 Nf4

13.Nc4 Qf6

14.Nd6 Qd6 15.Nh4 a6 =+.

14.g3 Ne2 15.Qe2 a6 16.Nd6 Qd6 17.a4 –/+.

14.g3 Ng6 15.Nd6 Qd6 16.Nd2 a6 =+.

14.g3 Ng6 15.h4 a6 16.h5 Ne7 17.Nd6 Qd6 18.ba6 Ba6 19.h6 =+.

14.g3 Ng6 15.h4 Bc7 16.h5=+ Ne7 17.Bc1 (17.h6 a6 18.hg7 Qg7 19.ba6 Ra6=+) 17...h6 18.g4 (18.Qc2=+) 18...g5 (18...a6 19.g5 Qe6 20.gh6 gh6 21.Kh2 ab5 22.Na3–/+) 19.Bb2 (19.hg6 Qg6 20.Nh4 Qf6=+) 19...Rfe8 (19...a6 20.ba6 Ba6 21.Qc2=+) 20.a4 Qe6 21.Nfd2 Nf6 (21...a6 22.ba6 Ra6 23.Qb3=+) 22.f3 (22.a5 Rad8=) 22...Rad8 23.Ra3 Kh7 (23...a5 24.Qc2=+) 24.Qa1 Neg8 25.Kg2 (25.a5 ba5 26.Na5 Bc8+=) 25...Bc8 26.Rh1 Re7 27.Nf1 Ne8 28.Nfe3 f6 29.Nd5 Red7 30.Qa2 Ne7 31.Ne7 Re7 32.Ne3 Qa2 33.Ra2 Be6 34.Ra3 Bd6 35.Rc3 Nc7 36.Rd1 a6 37.ba6= Na6 38.Ba3 Nc7 39.Nc4= Bc4 40.dc4+= Ne6 41.Rb3 Bc7 42.Rd8 Bd8 43.Bc1 Rd7 44.Be3+= Ra7 45.Ra3 Kg7 46.Kf2 Kf7 47.Bd1 Bc7 48.Rd3 Ke7 49.Bb3 Bd6 50.Ke2 Nd8 51.Kd1 Nc6 52.Bd2 Kd7 53.Bc3 Kc7 54.Kc1 Nd8 55.Bd2 Ne6 56.Be3 Kd7 57.Kb2 Nd4= 58.Bd4 ed4 59.Kc2 Ke6 60.Kd1 Ke5 61.Ke2 Ke6 62.Rd1 Bf4 63.Rd3 Be3 64.Rd1 Ke5 65.Rh1 Kf4 66.Rh3 d3 67.Kd3= Rd7 68.Kc3 Rd2 69.Rh1 Rf2 (70.Bd1 Rd2+=; 69...Kf3 70.Rd1 Rd4 71.Rd3=+). Tilp,Andreas – Riemer,W (2480), corr DDR, 1989.

10.Nbd2 Qe7

11.a4 Rfc8 12.a5= a6 13.d4 ab5–/+ 14.cd5 c4!? 15.e4 c3 16.de6 Qe6 17.Bc3 Rc3 –/+.

11.a4 Rfc8 12.a5= a6 13.d4 ab5–/+ 14.cd5 ed5 (15.dc5 Bc5 16.ab6 Ra1 17.Ba1 b4=+ (< 17...Bb6 18.Bb5 Ra8 19.Re1=)) 0–1. Nemec,Zdenek – Pangrac,Michal, CSR CF, 1990.

11.a4 Rfc8 12.a5= a6 13.cd5!? ab5 14.de6 Qe6 15.Ng5 =.

11.a4 Ng4 12.a5= dc4 13.dc4 ba5 14.Ra5 a6 15.ba6 Ra6 16.Ra6 Ba6 17.Bg7 Kg7 18.Qa1 Ndf6 19.Qa6 +/–.

11.a4 Ng4 12.a5= dc4 13.dc4 ba5 14.Ra5 Bc7 15.Ra2+= e5 16.e4 (16.h3 Ngf6=) 16...Rfd8 (16...a6 17.ba6 Ra6 18.Ra6 Ba6 19.Qc2=) 17.Qa1 (17.Qc2 a6+=) 17...f5 (17...Ngf6 18.Bd3 Qd6 19.Bc2=) 18.Ne1 (18.Qb1 Ndf6 19.Qe1 Ne4 (< 19...Be4 20.h3 Bf3 21.Bf3=) 20.Ne4 fe4–/+) 18...fe4 (18...Qd6 19.Bc3=) 19.Nb3 (19.Bg4 Nf6 20.Bf5 Rd2 21.Ra7 Ra7 22.Qa7 Bd6+=) 19...Ndf6 (19...Qg5 20.Bc1 e3 21.fe3=) 20.h3 (20.Bc1 Bb6+=) 20...Nh6= 21.Nc2 (21.Ra7 Nf5=) 21...Nf5 (22.Ne3 Nd4=). Nemec,Zdenek – Bilek,Bernard, CSR CF, 1990.

11.a4 Ng4 12.a5= dc4 13.dc4 a6 14.h3 Ngf6 15.ab6 ab5 16.cb5 Ra1 17.Ba1 Nb6 18.Bf6 Qf6 19.Ne4 Be4 20.Qd6 =.

11.a4 Ng4 12.a5= dc4 13.Nc4 Nh6 +/–.

11.Rc1 a6 12.a4 =+.

11.Rc1 Rac8 12.Qa4 (12.a3 e5=) 12...Ra8 13.Rc2 (13.cd5 ed5 (13...Bd5? 14.e4+–) 14.Nh4 Qe6=+) 13...e5 (13...a6 14.Rfc1=+) 14.cd5= Nd5 15.a3 (15.Nc4 a6 16.Nd6 Qd6=+) 15...a6=+ 16.ba6 Ba6 (16...Ra6 17.Qb3 Ra7 18.Ne4=) 17.Qc6 N7f6 18.Nc4 Bc4 (18...Bc7 19.e4 (< 19.Be5 Be5 20.Nfe5 b5–/+) 19...Bc4 20.dc4=) 19.dc4 (< 19.Rc4 Rfc8 20.Qb5 Ra5=+) 19...Nc7? (better is 19...Rfc8!? 20.Qb5 Nc7=) 20.Rd1 (20.Rd2 Rfd8 21.Rfd1 Nce8+/–) 20...Rfd8 21.Rcd2 Nfe8 (21...Nce8 22.Qb6 Rdb8 23.Rd6 Rb6 24.Rb6+=) 22.Bd3 (22.Qb6 Rdb8 23.Rd6 Nd6 (< 23...Rb6 24.Rb6 f6 25.Nh4=) 24.Qd6 Qd6 25.Rd6 Rb2–/+) 22...g6 23.Be4 Rab8 24.Bc3 Ra8 25.Bb1 f6 26.Bb2+/– Rab8 27.Be4 Kh8 28.Qa4 f5 29.Bc6 Kg8 30.e4 f4 31.Qa7 Kf8 32.h3 Ne6 33.Qe7 Be7 34.Be5 Rd2 35.Rd2 Rd8 36.Bd5 N8c7 37.Kf1 Ke8 38.Rb2 b5 (38...Nd5 39.cd5 Nd4 40.Nd4 cd4 41.Rb6 Ba3 42.Bd4+–) ½–½. Woschkat,Karl_Heinz – Woronowicz,Zbigniew, corr 3GMM–04, 1997.

11.Qc2 a5 12.a4 Rac8 13.Rfe1 h6 14.Bf1 Rfe8 15.e4 de4 16.de4 e5 17.Nh4 Nf8 18.Nf5 Qd7 19.Qb3 Bc7 20.Rad1 Rcd8 21.Nb1 Qe6 22.Nc3 Ne4 23.Ng7 Rd1 24.Ne6 Re1 25.Ne4 (25.Nc7? Nd2 26.Qd1 Rd1 (26...Rf1 27.Qf1 Nf1 28.Ne8+/–) 27.Nd1 Rd8–+) 25...Re6 26.Ng3 Ng6 27.Qc2 (27.Bc3 Rc1 28.Ne2 Rf1 29.Kf1 Nh4+=) 27...Nh4 (27...Nf4 28.f3 Rd6+/–) 28.f3+= Bf3 29.gf3 Nf3 30.Kf2 Nd4 31.Qc3 Rd1 32.Ne4 Bd8 33.Qh3 Rb1 34.Bc3 Rb3 35.Qg4 Kf8 36.Bh3 Bg5 37.Qh5 Rg6 38.Bd4 ed4 39.Ng5 (39.Ng5 Rf6 40.Nf3 Rff3 41.Qf3 Rf3 42.Kf3+/–) 1–0. Kural,A_Serhat (2305) – Andreassen,Einar (2185), EU/TC9/sf1 ICCF, 2011.

11.Qc2 Bc7 12.a4 dc4 13.Nc4 a6 14.Qb3 =.

11.Qc2 Bc7 12.a4 Rfd8 13.Rfc1 dc4 14.Nc4 a6 15.ba6 Ra6 16.Ncd2 =.

11.Qc2 Bc7 12.a4 Rfd8 13.Rfc1 e5 14.cd5 Nd5 15.Nc4 (15.a5 ba5 16.Nb3 a6 17.ba6 Ra6 18.Nc5 Nb4=+) 15...f6 (15...a6 16.Qb3=) 16.a5 Qe6 (16...Nb4 17.Qc3=) 17.Nfd2 (17.a6 Bc8+=) 17...Nf8 (17...Nb4 18.Qd1=) 18.Qb3+= Nb4 19.Re1 (19.a6 Bc8+=) 19...ba5= 20.d4 (20.Rec1=) 20...e4 (20...cd4!? 21.ed4 Bd5= (< 21...ed4 22.Bf3 Qf7 23.Bb7+/–)) 21.dc5+/– Nd3 22.c6 Bc6 23.bc6 Rab8 24.Qc2 Nb2 25.Nb2 Qe5 26.Bc4 Kh8 27.Rab1 Qh2 28.Kf1 f5 29.Ke2 Qh5+= 30.f3 Qg5 31.g4 Bb6 32.Qc3 Rd6 33.Rg1 Rh6?? 34.Rg2 Ng6? 35.f4+– Qh4 36.gf5 Qh3 37.Rf2 Nh4 38.Rg1 Nf5+= 39.Ne4 Be3 40.Qe5 Qh5=+ 41.Kd3? Rd8–/+ 42.Kc2 Rc6 43.Kb3 Bd4 44.Rg5 Qh3 (45.Ka2 Be5 46.fe5 Nh6–+; 44...Be5 45.Rh5 a4 46.Na4 Nd4 47.Ka2 Bf4 48.Nac5+=) 0–1. Haider,Herbert – Wolf,Gerhard, Bayern–chB Tirschenreuth, 1982.

11.Qc2 Bc7 12.a4 Rfd8 13.cd5 Nd5 14.a5 ba5 =.

11.Qc2 Rad8 12.Rfe1 Bb8 13.a4 e5 14.cd5 Nd5 15.Ba3 Qe6 16.a5 Rfe8 17.g3 Kh8 18.Bf1 f5 19.e4 Ne7 20.Nc4 Qf6 21.Bg2 Ng6 Black plans f4 22.Bb2 f4 23.Bc3 h5 24.h4 Ngf8 25.Qe2 g6 26.gf4 Qf4 27.Bd2 Qf7 28.Ng5 Qf6 29.Bh3 Bc8 30.Kh1 Nh7 (30...Bb7!?+/–) 31.Nh7+– Qh4 (better is 31...Kh7 32.Bg5 Qf7+–) 32.Ng5 Nf6 33.Kg2 Rf8 (33...Bh3 34.Nh3 Qg4 35.Qg4 hg4+–) 34.Bc8 Rc8 35.Rh1 (better is 35.f3 Nh7 36.Rh1 Qg5 37.Bg5 Ng5+–) 35...Qg4 36.Qg4 Ng4 37.f3 (37.ab6?! Rf2 38.Kg1 ab6 39.Nb6 Rc7+–) 37...Nf6 38.ab6 ab6 39.Nb6 Rcd8 40.Ne6 Rd3 41.Bg5 Rf7 42.Ra8 Ng8 43.Rf1 (43.Rb8!? Rdf3 44.Nc4 Rf2 45.Kg3 R2f3 46.Kh4 R3f4 47.Nf4 ef4+–) 43...Bd6 (43...Rd6 44.Rb8 Re6 45.Rc1+–) 44.Rd8 Rb7 (44...Rb3 45.Rd6 Ra7+–) 45.Bf6 Kh7 46.Ng5 Kh6 47.Rg8 (47.Rg8 Rh7 48.Nh7 g5 49.Ng5 Bf8 50.Nd5 Rd5 51.ed5 c4 52.Rf8 Kg6 53.f4 ef4 54.Rf4 h4 55.Rg8 Kh5 56.Nh3 c3 57.Rh4) 1–0. Nikitin,Aleksander – Daniel,Jiri, III Mielenska Perla Baltyku Poland, 2007.

11.Qc2 Rae8 12.a4 Bb8 13.a5+= e5 14.a6 Ba8= 15.e4 d4 16.Rae1 (16.Nb3 Bd6=) 16...Nh5 17.Nd4?? (better is 17.Kh1=) 17...ed4–+ 18.Bh5 Qe5 19.Bf7 Rf7 20.g3 g5 21.Bc1 Ref8 22.Qd1 (22.f3 h5–/+) 22...Qe6 23.Qe2 Ne5 24.f3 Qh3 25.Rf2 Rf6 26.Ref1 h5 (26...Qh5 27.Rg2–+) 27.Rg2 Kh7 28.Rff2 h4 29.f4 Ng4 (29...hg3!? 30.Rg3 Qh4–/+) 30.Nf3=+ Rg8 31.Ng5 Rg5 32.fg5 Rf2 33.Rf2 hg3 34.hg3 (34.Rf8 Kg7 35.Rf1 Nh2–+ (< 35...gh2 36.Kh1–/+)) 34...Bg3 (34...Nf2 35.Qf2 Qg3 36.Qg3 Bg3 37.Kg2+=) 35.Rg2 Ne5–/+ 36.Qf1 Qg4 37.g6 Kg8 (38.Rb2 Kg7–/+ (38...Qg6? 39.Rg2+–); 37...Kg6 38.Bf4 Nf3 39.Qf3 Qf3 40.Rg3 Qg3 41.Bg3 Be4 42.de4+–; 37...Qg6?? 38.Bf4 Qe6 39.Rg3+–) 0–1. Melich,Jindrich (2170) – Vavrak,Peter (2105), Stary Smokovec op, 1996.

11.Qc2 Rae8 12.a4 Bb8 13.a5+= e5 14.e4 d4 +=.

11.Qc2 Rae8 12.a4 Qd8 13.cd5 ed5 14.a5 =.

11.d4 Rfd8 =+.

11.d4 e5 12.de5 Ne5 13.Qc2 Rad8 14.Rad1 Neg4 15.Bf6 Nf6 16.cd5 Bd5 17.Nc4 Bb8 18.Nfd2 Ne4 19.Bd3 Nf6 20.e4 Ba8 21.f4 h6 22.e5 Ne8 23.Ne3 Nc7 24.a4 Ne6 25.Nf5 Qb7 26.Rf3 Nd4 27.Nd4 Rd4 28.Nb3 Rdd8 29.Nc1 Qe7 30.Rf2 f6 31.Bc4 Kh8 32.e6 Be4 33.Rd8 Bc2 34.Rd7 Qe8 35.Rc2 Qg6 36.e7 Re8 37.Rd8 Bf4 38.Re2 1–0. Nemec,Zdenek – Zika,Premysl, corr Czechoslovakia, 1989.

11.cd5 ed5 12.a4 a6 =+.

11.cd5 Bd5? 12.e4 +–.

11.Re1 Rad8 12.Qa4 Bb8 13.Rac1 Rfe8 14.Ba3 (14.d4 Rc8=) 14...e5 (14...dc4 15.d4=) 15.cd5 Bd5 16.e4 (16.Bb2!?=) 16...Ba2=+ 17.g3 (17.Bc5!? Nc5 18.Qa2 Nd3 19.Bd3 Rd3 20.Qb2=+) 17...Be6–/+ 18.d4 (18.Bb2 Ng4–/+) 18...ed4 19.Nd4 Qd6 (19...Ne5 20.f4 Rd4 21.Qd4 cd4 22.Be7 Re7 23.fe5 Be5 24.Nf3=) 20.N2f3 (20.Ne6 Qe6 (< 20...Qd2 21.Nd8 Rd8 22.Rcd1+/–; 20...fe6?! 21.Red1=; 20...Re6?! 21.Rcd1=+) 21.f4 Re7=) 20...Ne5 (20...Bg4 21.Nf5 Bf5 22.ef5–/+) 21.Rcd1 (21.Nc6 Nc6 22.bc6 Qe7=+) 21...Qc7 (21...Nf3 22.Bf3 Qe5 23.Ne6 Qe6 24.Rd8 Rd8 25.Bb2=+) 22.Ne6=+ Nf3 (22...Re6 23.Ne5 Rd1 24.Rd1 Qe5 25.f3=+) 23.Bf3 fe6 (23...Re6 24.Bb2=+) 24.Bb2 Qf7 25.Be2 (25.e5 Nd5 26.Be4 Qh5=+) 25...Kh8 (25...Qg6 26.Rd8 Rd8 27.Rd1=+) 26.Bc4 Qh5 27.Rd8+= Rd8 28.Bf6 gf6 29.Be6 Qe5 30.Bf5+/– Rd2 31.Qa6 Qc7 32.Rc1 Kg7 33.Qa3 Qe5 34.Qf3 Kh8 35.Qh5 Qe7+= 36.Qh6 Rd6 37.Rc3 Qg7 38.Qh5+/– Rd8 39.g4 Bf4 40.Rh3 h6 41.Be6 Qg5 42.Rd3!! Rf8 43.Qh3 f5 44.Bf5 Rd8 45.Rd5 Rd5 46.ed5 Qe7 47.Qf3 Qe5 48.h3 Kg7 49.Qd3 Qd4 50.Qd4 cd4 51.Kg2 Kf6 52.Kf3 Ke5 53.d6 Bg5 54.d7 Kd5 55.Kg3 Kc4 56.f4 Bd8 57.h4 Kb5 58.g5 (58...hg5 59.hg5+–) 1–0. Miralles,Gilles (2365) – Danailov,Silvio (2440), BUL–FRA, 1985.

11.h3 a6 12.ba6 Ra6 13.d4 =+.

11.a4 a5

12.ba6 (--> 11.a4 a6 12.ba6).

12.Rb1 A) 12...e5 13.cd5 (13.Qc2 e4 14.Ng5 h6 15.Nh3 ed3 16.Bd3 Ng4 17.g3 Rad8 18.Rfd1 Nde5+=) 13...Bd5 14.Qc2 Rad8 15.Nc4 Rfe8 16.Rfc1 h6 17.e4 Bb7 18.Nh4 Qe6=; B) 12...Rad8 13.cd5 (13.Qc2 e5 14.e4 d4 15.Bc1 Bc8 16.Nh4 Nb8 17.Re1 Rfe8 18.Nhf3 h6=) 13...Nd5 14.Nc4 e5 15.Nfd2 Bc7 16.Bf3 f5 17.Qb3 Qe6 18.Rbe1 N7f6=.

12.Rc1 A) 12...Rad8 13.cd5 (13.Qc2 e5 14.cd5 Nd5 15.Nc4 Nb4 16.Qd2 Bd5 17.e4 Bc4 18.dc4 Nf6=) 13...Nd5 14.Nc4 e5 15.Nfd2 Bc7 16.Bf3 f5 17.Qb3 Qe6 18.Rfe1 N7f6=; B) 12...Rac8 13.Qc2 (13.cd5 ed5 14.Re1 Rfe8 15.d4 c4 16.Bc3 Ba3 17.Rc2 Ne4 18.Ne4 de4+=) 13...Rcd8 14.Rfd1 e5 15.cd5 Nd5 16.Ne4 Nb4 17.Qb1 Bc7 18.Nc3 Nf6=.

12.Qc2 A) 12...Rac8 13.Rac1 (13.cd5 ed5 14.Rac1 Rfe8 15.Rfe1 Qe6 16.Ng5 Qf5 17.Ngf3 Ng4 18.h3 Ngf6=) 13...Rcd8 14.Rfd1 e5 15.cd5 Nd5 16.Nc4 Rfe8 17.Nfd2 Bc7 18.Bf3 Qe6=; B) 12...Rad8 13.Rac1 (13.Rad1 Rfe8 14.e4 Bf4 15.g3 Bc7 16.Rde1 d4 17.Nb3 e5 18.Bc1 Bd6+=) 13...e5 14.cd5 Nd5 15.Nc4 Nb4 16.Qd2 Rfe8 17.Rcd1 Bd5 18.e4 Bb7=.

12.cd5 A) 12...Nd5 13.Rc1 (13.Ne4 Bc7 14.Rc1 Rad8 15.Qc2 f5 16.Ned2 Nb4 17.Qb3 Bd5 18.Nc4 e5+=) 13...Rad8 14.Nc4 e5 15.Nfd2 f5 16.Qb3 Bc7 17.Bf3 Qe6 18.Rfe1 N7f6=; B) 12...ed5 13.Rc1 (13.Qc2 Rfe8 14.Rfe1 Rad8 15.Rac1 Rc8 16.Nh4 Qe6 17.Nhf3 Ng4 18.Bc3 Qh6–/+) 13...Rfe8 14.Re1 Qe6 15.Qc2 Rad8 16.d4 c4 17.Ng5 Qe7 18.Bh5 g6=.

12.Re1 A) 12...Rad8 13.cd5 (13.Qc2 e5 14.e4 d4 15.Bc1 Bc8 16.Nb3 Rde8 17.Rb1 h6 18.Nh4 Nb8=) 13...Nd5 14.Nc4 e5 15.Rc1 Rfe8 16.Nfd2 Bc7 17.Bf3 Qe6 18.Qe2 Qh6=; B) 12...e5 13.cd5 (13.Qc2 e4 14.Ng5 h6 15.Nh3 Ne5 16.Nf4 Rad8 17.de4 de4 18.Rad1 Qc7=) 13...Bd5 14.Rc1 Rad8 15.Nc4 Rfe8 16.Qc2 Bc7 17.e4 Bb7 18.Nh4 Nd5=.

12.h3 e5 (12...Rad8 13.cd5 (13.Qc2 e5 14.e4 d4 15.Rae1 Rfe8 16.Bc1 Bc8 17.Nh4 Nb8 18.Nhf3 h6=) 13...ed5 14.Rc1 Rfe8 15.Re1 Qe6 16.Qc2 Rc8 17.Ng5 Qf5 18.Ngf3 h6=) 13.cd5 (13.Qc2 e4 14.Nh4 Qe6 15.cd5 Bd5 16.de4 Ne4 17.Bd3 f5 18.Nf5 Nd2+/–) 13...Bd5 14.d4 (14.Rc1!?= Rfd8 15.Nc4 Re8 16.Ng5 Bc7 17.Qc2 Rad8 18.Bf3 Bf3=; 14.Qc2 Rad8 15.Nc4 Rfe8 16.e4 Bc4 17.dc4 Nh5 18.Rad1 Nf4=) 14...cd4–/+ 15.ed4 e4 16.Nh2 (16.Nh4 Qe6 17.Ba3 Bb4 18.Bb4 ab4–/+) 16...e3 (16...Rac8 17.Ng4 Ng4 18.Bg4 e3–/+) 17.fe3?? (better is 17.Nc4 ef2 18.Rf2–/+ Bg3–/+) 17...Qe3–+ 18.Kh1 (18.Rf2 Bh2 19.Kh2 Qf2–+) 18...Rfe8 (18...Bg2 19.Kg2 Qg3 20.Kh1 Qh2) 19.Bf3 (19.Rf6 Qh3 20.Ndf3 Bf3 21.Qg1 Qg2 22.Qg2 Bg2 23.Kg2 Re2 24.Rf2 Rf2 25.Kf2 Bh2 26.Rc1–+) 19...Qf4 (19...Qf4 20.g3 Qg3–+) 0–1. phildo (1830) – dsb13 (1790), gameknot.com, 2013.

11.a4 a6=+

12.ba6 Ba6 13.Qb3 Rfb8 =.

12.ba6 Ba6 13.d4 dc4 14.Bc4 Bc4 15.Nc4 Bc7 16.Qb3 Nd5 (16...Rfd8 17.Rfd1=) 17.Rfd1 Rfb8 (17...f5 18.Rab1=) 18.Qb5 (18.e4 N5f6 19.Qe3 cd4 20.Bd4 Nc5+=) 18...N7f6= 19.Nfd2 Nb4 20.Nb3 (20.Ra3 Rc8+=) 20...Nfd5 21.Ne5 (21.dc5 Nc2 22.Rac1 bc5 23.Qc5 Qh4+=) 21...f6 (21...Be5 22.de5 Rc8 23.e4=) 22.Nf3 Nc2 (22...Bd6!?=) 23.Rac1+/– Ndb4 (23...Ncb4 24.e4 (24.dc5?! Na2=) 24...Bf4 25.ed5 Bc1 26.Rc1 Nd5 27.Ba3+=) 24.Rd2 (24.dc5!? bc5 25.Qc5+/–) 24...cd4 25.Nfd4 Nd4 26.Bd4 Nd5 27.Rdc2 (27.e4 Nf4+/–) 27...Qd6 28.g3 e5 (28...Rc8 29.e4 Ne7 30.f4+/–) 29.Bb2+/– Ra7 30.Ba3!! Qe6 (30...Qa3 31.Qd5) 31.e4 (31...Rd8 32.Rd2+–) 1–0. Borucki,Bogumil – Frysiak,Andrzej, corr 1. AMM Poland, 1991.

12.ba6 Ba6 13.d4 dc4 14.Nc4 Rfd8 =.

12.ba6 Ba6 13.d4 Rfc8 14.Rc1 =+.

12.d4 ab5 13.ab5 Ra1 14.Ba1 Ra8 15.Bb2 Ne4 16.cd5 ed5 17.dc5 bc5 ½–½. Jacobi,Karl Heinz (2150) – Siegmund,Rainer (2155), GER–chT Seniors, 2008.

12.d4 cd4 13.ba6 Ba6 14.Bd4 e5 15.Bb2 =+.

12.d4 cd4 13.ba6 Ra6 14.ed4 dc4 15.Nc4 Bb4 16.Ne3 Ra5 17.Rc1 Rc8 (17...Nd5 18.Nd5 Bd5 19.Bc3=+) 18.Rc8= Bc8 19.Ne5 (19.Qc2 Bb7=) 19...Bb7=+ 20.Bb5 Ne5 (20...Qd6 21.N5c4 Qf4 22.Na5 ba5 23.d5 ed5 24.Bd7 Nd7 25.Nd5+/–) 21.de5= Nd5 22.Nd5 ed5 (22...Bd5 23.Qg4=) 23.Qh5 (23.Bd4 Qe6=) 23...Ba3 (23...Ba6 24.Ba6 Ra6 25.Rd1=) 24.Ba1 (24.Bd4 Bc5 25.Rd1 Qe6+=) 24...h6 (24...Ba6!? 25.Ba6 Ra6=) 25.Bd4+= Bc5 26.Bc3 (26.Rd1 Ba6 27.Bc3 Bb5 28.Ba5 Ba4=+) 26...Ra8 27.Qg4 Bc8 28.Qf4 Ba6 29.Ba6 Ra6 30.Bd4 Qd7 31.Bc5 bc5 32.Ra1 d4 33.Qc1?? Ra4–/+ 34.Ra4 Qa4–+ 35.h3 c4 36.Qe1 c3 37.e6 fe6 38.Qe6 Kf8 39.Qf5 Ke7 40.Qe5 Kd8 41.Qg7 Qd1 42.Kh2 c2 43.Qf6 Kc7 44.Qe7 Kc6 45.Qe6 Kc5 46.Qe7 Kc4 47.Qe6 Kb4 48.Qb6 Ka3 49.Qa5 Kb3 50.Qb5 Ka2 51.Qa5 Kb2 52.Qb6 Kc3 53.Qa5 Kc4 54.Qa6 Kd5 55.Qb7 Kd6 56.Qb6 Ke7 57.Qc7 Ke6 58.Qc6 Kf7 59.Qd7 Kf6 60.Qd6 Kf5 61.Qd5 Kg6 62.Qe6 Kg7 63.Qe7 Kg8 64.Qe6 Kh7 65.Qf7 Kh8 66.Qf8 Kh7 67.Qe7 Kg6 68.Qd6 Kg5 69.f4?? Kf5–+ 70.Qe5 Kg6 71.Qe6 Kg7 72.Qe7 Kg8 73.Qe6 Kf8 74.Qh6–/+ Kf7 75.Qh7 Kf6 76.Qh6 Kf7 77.Qh7 Kf6 78.Qh6= Kf7 (78...Kf5 79.Qg5 Ke4 80.Qe5 Kd3 81.Qb5 Ke3 82.Qb3 Kf2 83.Qg3 Kf1–+) ½–½. SuperForte – REXChess, 1994.

12.d4 cd4 13.ba6 Ra6 14.cd5 Nd5 15.Ba6 Ba6 =.

12.ba6 Ra6

13.Qb3 Rfa8 14.Ra2 Bc6 15.Rfa1 e5 16.cd5 Bd5 17.Nc4 Bc7 (17...Qe6 18.Ng5 Qf5 19.Nf3+=) 18.Bc3 e4 19.Nfd2 ed3 20.Bf3? (better is 20.Bd3!? Ng4 21.h3+=) 20...Qe6 21.Bf6 Nf6 (21...gf6?! 22.Qd3 Bf3 23.Nf3= (worse is 23.gf3 Qh3 24.Nf1 Ne5 25.Ne5 Be5–/+)) 22.Ra3 Bf3 (22...Ng4!? 23.h3 Ne5 24.Bd5 Qd5–/+) 23.Nf3+= Qc6 24.Nfd2 (24.Nfe5 Be5 25.Ne5 Qe6+=) 24...h6 (24...Rd8 25.Rd1–/+) 25.Nb2 (25.Nf3!?+=) 25...Be5–/+ 26.Ndc4 Bb2 27.Nb2 d2 28.Nd1? (better is 28.Qc2!?+=) 28...c4 29.Qc2 Qc5 30.R3a2 Rd8 31.Nc3 Rd3 32.Rd1 Qb4 33.Nb1 b5 34.ab5 Ra2 35.Qa2 Ne4?? (better is 35...Qb5 36.Qa8 Kh7–+) 36.Qa8+– Kh7 37.Qe4 g6 38.Kf1 Qb5 39.Ke2 (39.Nd2 c3 40.Qd3 Qd3 41.Ke1 c2–+ (worse is 41...cd2 42.Rd2 Qe4 43.Kf1–+)) 39...Rd7 (39...Rb3 40.Kd2 (40.Nd2?! c3 41.Qc4 cd2 42.Qb5 Rb5+/–) 40...Qa5 41.Ke2+–) 40.Nc3 Qh5 41.g4 Qh2 42.Qc4 h5 43.Nd5 (43.Rd2?! Rd2 44.Kd2 Qf2 45.Ne2 h4+–) 43...Qh4 44.Rd2 Rd6 1–0. Chashchev,S (2290) – Amanov,Z (2380), Chess City, 2008.

13.d4 Ra7

14.Rb1 Rfa8 15.dc5 bc5 16.cd5 Bd5 17.Bb5 =+.

14.Rb1 h6 15.h3 (15.dc5 Nc5 16.Bf6 Qf6 17.Rb6 Rd8=) 15...Rd8 (15...Bc6 16.cd5 Ba4 17.Qc1 ed5 18.dc5 bc5 19.Bd3–/+) 16.Re1 (16.Qb3 Rda8=+) 16...Bc7 (16...Bc6 17.Ra1=+) 17.Qc2 Rc8 (17...Rda8 18.cd5 Ra4 19.de6 Qe6 20.Bd3=) 18.Rec1 (18.Bd3 dc4 19.Nc4 Bf3 20.gf3 Nd5=) 18...Bd6 (18...Bc6 19.Ra1=+) 19.Ba3 (19.Bd3 Bc6 20.Ra1 cd4 21.Nd4 Nc5 22.Nc6 Rc6 23.cd5 Nd5=) 19...Rca8 20.cd5 ed5 (20...Bd5 21.dc5 Bc5 22.Bc5 Nc5 23.Rb6 Na4 24.Rb5=) 21.Bb5= Qe6 22.Qb2 (22.dc5 A) < 22...Nc5 A1) < 23.Bc5 bc5 (< 23...Bc5 24.Nb3+=) 24.Bd3 Bc6=+; A2) 23.Nd4 Qe5 A21) < 24.Bc5 Qh2 (< 24...Bc5 25.Qd3+=; < 24...bc5 25.N2f3 Qh5 26.Nf5+=) 25.Kf1 bc5–/+; A22) 24.N2f3+=; B) 22...bc5 23.Bb2 Rb8=) 22...Qf5 (22...Rc8 23.dc5 bc5 24.Qc3=+) 23.Qc3 Rc8 24.Qb2 Rd8 25.Nh4 Qe6=+ 26.Nhf3 Rda8 27.Rc2 Qe7 28.Rbc1 Kh8 29.Rb1 Bc7 30.Rbc1 Bd6 31.Rb1 Qe6 32.Rc3 Qf5 33.Rbc1 Kg8 34.Qb3 c4 35.Qc2 Qc2 36.R1c2 Ba3 37.Ra3 Nf8 38.Ne5 Ne6 39.Nc6 Bc6=+ 40.Bc6 Rc8 41.Bb5 Rcc7 42.Rac3= Re7 43.Rc1 Nc7 44.Rb1 Nb5 45.Rb5 Ra4 46.Rb6 Ra2 47.Nc4 dc4 48.Rc4 Rea7 49.f3 Kh7 50.e4 Rd2 51.Kh2 Raa2 52.Kg3 g5 53.f4? Rg2 54.Kf3 Raf2 55.Ke3 gf4 56.Kd3 Rf3# (56...Rg3#) 0–1. SuperForte – REXChess, 1994.

14.Bd3 Rfa8 =+.

14.cd5 Bd5 15.Qb1 cd4 =+.

14.cd5 Bd5 15.Qc2 cd4 16.Nd4 Rc7 =.

14.Ne5 Rfa8 15.f4 cd4 16.ed4 Bb4 17.Ndf3 Ne4 18.Qb3 (18.Bd3 f6 19.cd5 fe5 20.Be4 ed5=+) 18...Ne5 19.fe5 Rc8 (19...Bc6 20.cd5 Bd5 21.Bc4 Bc4 22.Qc4=) 20.Rac1 Nd2 21.Nd2 Bd2 22.Rc2 (22.Ra1 dc4 23.Bc4 Qg5–/+) 22...dc4 23.Rc4 Rc4 24.Bc4 Qg5 25.d5 Qe3 (25...Be3 26.Kh1 Ra5 27.Rd1–/+) 26.Kh1=+ Qb3 27.Bb3 Bd5 28.Bd5 ed5 29.Rd1 Be3 30.Rd5 h6 31.Rd8 Kh7 32.Rd3 (32.Bd4 Bd4 33.Rd4 b5–+) 32...Bc5 33.h3 (33.Ba3 Ra4 34.Bc5 bc5–+) 33...Ra4–+ 34.Kh2 Rb4 35.Ba3 Rd4 36.Rb3 (36.Rf3 Ba3 37.Ra3 b5–/+) 36...Re4 37.Bb2 Re1 38.Rf3 Bg1 (38...Re2 39.Rb3–+) 39.Kg3–/+ Kg6 40.Bc3 Re4 41.Rd3 Kf5 42.Rf3 Ke6 43.Rd3 h5 44.Kf3 Kf5 45.g3 Bc5 46.e6 fe6 47.Bg7 Ra4 48.Bb2 Rb4 49.Bc3 Rc4 50.Bb2 h4 51.g4 Kg5 52.Be5 Rc2 53.Bc7=+ Kg6 54.Bd8 Bf2 55.Rb3 Kf7=+ 56.Bb6 Bb6 57.Rb6 Rh2 58.g5 Rh3 59.Kg4 Rh1 60.Rb7 Kf8 61.Rh7 Rg1 62.Kf4 Rf1 63.Kg4 e5 64.Rh4 Kf7 65.Rh6 e4 66.Rf6 ½–½. Sokolski,Alexey – Keres,Paul, Soviet–ch18 Moscow, 1950.

14.Ne5 Bc7 15.Nd7= Nd7 16.cd5 ed5 17.Bb5= Rfa8 (17...Rd8 18.Qh5=) 18.dc5 bc5 (18...Nc5 19.Qg4 Be5 20.Be5 Qe5 21.Rfb1=) 19.Bg7 Kg7 (19...Qd6!? 20.f4 Kg7 21.Qg4 Qg6 22.Qg6 hg6 23.Bd7 Ba6=) 20.Qg4+= Kh8 21.Qd7 (21.Bd7?! Ba6 22.Rfc1 Be5=+) 21...Qd7 22.Bd7 Ba6 23.Bc6 (23.Rfc1 Be5 24.Bc6 Rc8 25.Bd5 Ba1 26.Ra1 Rd8=) 23...Bf1= 24.Ba8 Bg2 25.Bc6 (25.Kg2 Ra8) 25...Ra6 26.Be8 (26.Kg2!? Rc6 27.Nf3=) 26...Rg6=+ 27.Nf1 Bf1 (27...Bf3 28.Ng3 h5 29.Bf7–/+) 28.Kf1 Bh2 29.Ra2 Rg1 (29...Kg7!?=+) 30.Ke2= f6 31.a5 Bb8 32.Rb2 Be5 33.Ra2 (33.Rb5 c4 34.f4 Bc7+=) 33...Rg7 (33...Bb8 34.a6 Ba7 35.Bc6+=) 34.a6 Bb8 35.Bc6 d4 36.ed4 cd4 37.Kd3 (37.Rb2 Ba7+=) 37...Ba7 38.Re2 (38.Be4 h5+=) 38...Rc7= 39.Re6 (39.Bd5 Kg7=) 39...Kg7 40.Rd6 (40.Be8 f5=) 40...Bc5 41.Re6 Kf7 42.Bd5 Kg6 43.Re4 (43.Re2 Ba7=+) 43...Kf5 (43...h5 44.Re2 Ba7 45.Bc4=+) 44.Bb7 (44.Be6 Kg6=) 44...h5+= 45.Rd4 Ba7 (45...Bd4 46.Kd4) 46.f3 Kg5 47.Rd8 Rg7 (47...f5 48.Rg8 Kf4 49.Rh8+=) ½–½. Janecky – Grund,Karl, corr ICCF, 1975.

14.Ne5 Rc8 15.Nd7 Nd7 16.cd5 ed5 17.Bb5 c4 18.Nb1 Nf6 19.Ba3! Bc6 20.Bd6 Qd6 21.Nc3 Ra5?! 22.Bc6 Qc6 23.f3 Rca8 24.Qd2 Ne8 25.e4 Nc7 26.Rae1 and White obtained the advantage. Sokolsky – Atyashev, USSR ch–02, 1952.

14.Ne5 Rc8 15.Nd7 Nd7 16.cd5 ed5 17.Bb5 c4 18.Nb1 (18.Bc3 Bc6=+) 18...Nf6 (18...Qh4 19.h3 Rc7 20.Nc3=+) 19.Ba3 Bc6 (19...Ba3 20.Na3 Ra5 21.Qc2=+) 20.Bd6 Qd6 21.Nc3 Re7 (21...Ra5 22.Qf3=+) 22.Bc6 Qc6 23.Re1 (23.Rb1 Ne4 24.Ne4 Re4=) 23...Ne8 (23...Ne4 24.Ne4 Re4 25.a5=) 24.Qb1 (24.a5 Nf6=) 24...Nd6 25.Qb4 Re6 26.Rab1 Rb8 27.Re2 h6 28.Reb2 Rb7 29.Kf1 f5 30.Nb5 Nb5 31.Qb5 Ra7 32.Qb6 Ra4 33.Qb8 Re8 34.Qg3 Ra6 35.Rb7 Qf6 36.Qf4 Rea8 37.Qf3 Qe6 38.Qg3 Qf6 39.Qc7 Ra1 40.g3 Rb1 41.Rb1 Qd8 42.Qe5 Qd7= 43.Rb6 Ra5 44.Rd6 Qf7 45.Re6 Kh7 46.Re7 Qg6 47.h3 Rb5 48.Kg2 h5 (48...Kg8 49.Rc7+/–) ½–½. Schuehler,Ernst – Gruesser,Manfred, corr DDR–Cup3 sf04, 1973.

14.Ne5 Rc8 15.Nd7 Nd7 16.cd5 ed5 17.dc5 bc5 18.Qc2 Qh4 =.

14.Ne5 Rc8 15.Nd7 Nd7 16.cd5 Bd5 17.e4 Bc6 18.e5 =+.

14.Ne5 cd4 15.ed4 Rc8 16.Qb3 =+.

14.Ne5 Be5 15.de5= Ne8 16.Bd3 f5 17.Qc2 =.

14.Ne5 Be5 15.de5= Ne8 16.Bd3 f6 17.ef6 Nef6 18.Qc2 Bc6 (18...Rfa8 19.Rfb1=) 19.Ra2 (19.Rfb1 Rfa8=) 19...Rfa8 20.Rfa1 dc4 (20...e5 21.cd5 Bd5 22.Ra3=) 21.Bc4 (21.Nc4 e5=) 21...Nd5 22.Qb3 N7f6 (22...Nf8 23.e4 Nb4 24.Ra3=) 23.e4 (23.Ra3 Kh8=) 23...Nb4=+ 24.Be6 (24.Bf6 Qf6 25.Ra3 Kh8–/+) 24...Kh8 25.Bf6 (25.Ra3 Ne4 26.Ne4 Be4=) 25...Qf6–/+ 26.Ra3 Rd8 27.Bd5 Nd5 28.ed5 Bd5 29.Qc2 c4 30.Nf1 Bf7 31.Ne3 b5 32.Qb1 Rd2 33.f3 Rb2–+ 34.Qd1 b4 (35.R3a2 c3 36.Rb2 cb2–+) 0–1. Grossmann,P – Snajdr,J, corr ICCF EU/M/GT/031 (year?).

14.Ne5 Be5 15.de5= Ne8 16.Bd3 f6 17.Qh5 h6 =.

11.a4 Bc7

12.Qc2 Rfd8 =.

12.d4 Rfd8 13.Qc2 Rac8 14.dc5 Qc5? 15.Ba3 Bh2 16.Nh2 +–.

12.d4 Rfd8 13.Qc2 Rac8 14.dc5 Nc5=+ 15.Nd4 (15.Rfd1 a5=+) 15...Qd6 (15...e5 16.Nf5 Qe6 17.cd5 Bd5 18.f3–/+) 16.g3 (16.f4 e5 17.Nf5 Qe6=+) 16...Qd7 (16...e5 17.N4f3 Qe7 18.Rfd1=+) 17.Rfd1 Ba8 (17...Bd6 18.a5=+) 18.N4b3 (18.cd5 Bd5 19.Bf3 e5 20.Bd5 ed4 (< 20...Qd5 21.Nc6 Re8 22.Na7+/–) 21.ed4 Nd5 22.dc5 bc5+=) 18...Qe7 (18...Nb3 19.Nb3 e5 20.f4=+) 19.Nc5= bc5 (19...Qc5?? 20.Ba3 Be5 21.Bc5 Ba1 22.Bb6 (< 22.Ra1 Rc5 23.a5 dc4+–) 22...ab6 23.Ra1 dc4 24.Nc4+–) 20.a5 (20.cd5 Rd5 21.Rac1 Be5+=) 20...Rd7 (20...d4 21.Qd3=) 21.Bd3 h6 22.Nb3 (22.cd5 Nd5 23.Nc4 Rcd8=) 22...dc4 23.Bc4 Rd1 (23...Bd6 24.b6=) 24.Rd1. Gross,Wilhelm – Merten,Rainer, xxv/36, 1994.

12.d4 Rfd8 13.Qc2 Rac8 14.Rfd1 cd4 15.Bd4 a6 =.

12.cd5 ed5 13.d4 Rfc8 =.

12.g3 dc4 13.Nc4 a6 14.Qb3 =+.

12.g3 Rfe8 13.Qc2 a6 =+.

12.g3 Rfe8 13.Re1 a6 14.ba6 Ra6 15.d4 =+.

12.g3 Rfe8 13.Re1 Rad8 14.Qc2 e5 15.Bf1 (15.e4 de4 16.de4 a6=) 15...Qe6 (15...e4 16.Nh4 Ne5 17.d4 cd4 18.ed4 Nc4 19.Nc4 dc4 20.Bc4=+) 16.Ng5 (16.Bg2 Qg4=+) 16...Qf5–/+ 17.Ngf3 (17.f4 d4 18.e4 Qg6 19.fe5 Ng4–/+) 17...dc4 18.e4 (18.Qc4 Bf3 19.e4 Be4 20.de4 Qh5=+) 18...cd3 19.Bd3 (19.ef5? dc2 20.Rac1 e4–+) 19...Qh5 20.Be2 Ng4 21.Nh4 g5 (21...Qg5 22.Bc1 Nh6 23.Ndf3=) 22.Bg4 (22.h3 gh4 23.Bg4 Qh6=+) 22...Qg4 23.Nf5 Qh3 (23...Qh5 24.a5=+) 24.Nf3 (24.f3 a6=+) 24...Qh5–/+ 25.Nd2 Nf6 (better is 25...g4–/+) 26.Nf1 (26.f3 Rd7–/+) 26...Qh3 (better is 26...g4!? 27.Nh4 Rd7–+) 27.f3–/+ g4 (27...Qh5 28.Ra3–/+) 28.Qc1 (better is 28.fg4 Kf8 29.a5–/+) 28...gf3?? (better is 28...Qh5 29.Qh6 Qg6 30.Qg6 hg6 31.Nh6 Kg7 32.Ng4 Ng4 33.fg4 f6–/+) 29.Qg5 Kf8 (29...Kh8 30.Qg7) 30.Qg7# 1–0. Gross,Wilhelm – Merten,Rainer, xxvi/16, 1995.

12.g3 Rfe8 13.Re1 Rad8 14.cd5 ed5 15.Qc2 Be5 =.

11.a4 Rad8

12.a5 e5 13.ab6 ab6 14.Ra7 +=.

12.Qc2 Nb8 13.a5 e5 +=.

12.Qc2 Nb8 13.Rad1 a6 14.d4 =.

12.Qc2 Nb8 13.Rad1 Ne8 14.Rfe1 f5 15.cd5 ed5 16.d4 c4 =.

12.Qc2 Nb8 13.Rad1 Ne8 14.Rfe1 f5 15.e4 d4= 16.Bf1 Qf6?? 17.Bc1?? g5?? 18.Kh1?? h6?? 19.Ng1?? Qg6 20.g3 Nf6=+ 21.Bg2 Ng4 22.Rf1 Qh5 23.h3 fe4 24.Ne4 Rf2?? (25.Nf2 Nf2 26.Qf2 Rf8+–; better is 24...Be4 25.Be4 Nf6=). Pavlov,V – Voronov,L, Ukraine, 1961.

12.a5 Bb8

13.Qa4 e5 14.cd5 Nd5 15.Nc4 f5 16.ab6 ab6 17.g3 e4 18.de4 fe4 19.Nh4 N7f6 20.Qb3 Qe6 21.Rad1 Kh8 22.Rd2 Nb4 23.Rd8 Rd8 24.f3 ef3 25.Nf3 (25.Bf3? Rd3 26.Bc3 Bd5 27.Bd5 A) worse is 27...Qd5 28.Qb2 Rd1 A1) 29.Nb6? Rf1 30.Kf1 Qh1 31.Ke2 Qh2 32.Kf1 Nc2–+ (32...Qg3 33.Bf6 Bc7 34.Nd7+=; 32...Bg3?! 33.Qh2 Bh2 34.Nf5=); A2) 29.Qe2 Rf1 30.Qf1+=; B) 27...Nbd5–+) 25...Ne4 26.Nd4? (26.Ba3 Bg3 27.Bb4 cb4 28.hg3 Ng3–+) 26...cd4 (better is 26...Qh3 27.Nc6 Bc6 28.bc6 Ng3 29.Bg7 Kg7 30.Qb2 Kg8–+) 27.Qb4= Nf6 28.Bd4 Qh3 29.Kf2 (29.Rf3!? Bf3 30.Bf3=) 29...Qh2 30.Ke1 Bg2 31.Rf6 Bg3 32.Kd2 gf6 33.Qe7 Rd4 34.ed4 Qh6 35.Kc2 f5 36.Qd8 Kg7= 37.Qe7 Kg8 38.Ne5 Be4+= 39.Kb3?? Bd5 40.Kc2 Be5 41.Qd8 Kg7 42.Qd5 Bf6 43.Qf5 ½–½. Fries Nielsen,Jens Ove (2385) – Kristiansen,Jens (2405), DEN–ch Denmark, 1989. (=1.Nf3 b6 2.b4 Bb7 3.Bb2 e6 4.e3 Nf6 5.b5 c5 6.Be2 d5 7.0–0 Nbd7 8.d3 Bd6 9.Nbd2 0–0 10.c4 Qe7 11.a4 Rad8 12.a5 Bb8)

13.Qb3 e5 14.Qc2 =.

13.Qc2+= dc4 14.Nc4 e5 15.Rfc1 e4 16.Nfd2 Rfe8 +=.

13.Qc2+= dc4 14.Nc4 e5 15.e4 Nh5 16.Bc1 Nf4 +=.

13.Qc2+= dc4 14.Nc4 e5 15.e4 Nh5 16.g3 Nhf6 17.Qc3 Rfe8 18.Nh4 =.

13.Qc2+= dc4 14.Nc4 e5 15.e4 Nh5 16.g3 g6 17.Qc3+= f6 18.ab6 ab6 19.Ra4 Ng7 20.Rfa1 Ne6 21.Qb3 Rf7 22.R4a3 Re8 23.Bf1 Nd4 24.Nd4+= cd4 25.Bh3 f5= 26.f3 Ref8 27.Qa2 Qf6 28.Bc1 Nc5 29.Qe2 Bc8 30.ef5 gf5 31.Rb1 Re7 32.Bd2 Bd7 33.Ra8 Rc8 34.Bb4 Ree8 35.Ba3 Qh6 36.Bg2 Qg6 37.Qf1 h5 38.f4 ef4 39.gf4= Kh7 40.Qf3 Rg8= 41.Rb8 Rb8=+ 42.Ne5 Qe8 43.Bc5 bc5 44.Nd7 Qd7 45.Qh5 Kg7 46.b6 Rh8=+ 47.Qg5 Kf7 48.Qg3 Rhg8 49.Qf3 Qd6 50.Qh5= Qg6 51.Qg6 Rg6 (52.b7 Rg4=). Dopper,Johan – Fritz,Harry, corr 3GMM–F, 2001.

13.Qc2 e5 14.e4 de4 15.de4 ba5 16.Ra5 +=.

13.Qc2 Rfe8 14.Rfd1 (14.h3 e5 15.ab6 Nb6+=) 14...Qd6 (14...h6 15.h3+=) 15.a6 (15.ab6 ab6 16.g3 h6+/–) 15...Bc8 (15...Ba8 16.h3+=) 16.Nf1 (16.d4 cd4 17.ed4 h6+/–) 16...Bc7 (16...Qe7 17.Ra4+=) 17.d4 (17.h3 e5+=) 17...Qe7 (17...e5 18.de5 Ne5 19.Ne5 Re5 20.Be5 Qe5 21.f4+/–) 18.Ne5 (18.Ng3+/–) 18...Nb8 (better is 18...Ne5!? 19.de5 Nd7+=) 19.dc5+– bc5 20.Rac1 (20.Nd2 Nfd7 21.Nd3 Bd6+/–) 20...Bb6 (20...dc4 21.Bc4 Nfd7 22.Nf3+/–) 21.Ba3 (21.Ng3 Bc7+–) 21...Qc7+/– 22.Bb2 h6 (22...Qe7 23.Ng3 Bc7+–) 23.Nf3 (23.Ng3!?+/–) 23...Qe7 24.Ne5 Qc7 25.Nd3 (25.Ng3!? Rd6+/–) 25...Nbd7+/– 26.Ba3 (26.Ng3 Qb8+/–) 26...Ne4 (26...d4!? 27.ed4 cd4+=) 27.cd5+/– ed5 28.f3 Nef6 29.Nc5 (29.Bc5?! Nc5 30.Nc5 Qe5=) 29...Qe5 (29...Nc5 30.Bc5 Bf5 31.Bd3 (31.Qf5?! Bc5 32.Kh1 Qb6=) 31...Bd3 32.Rd3+/–) 30.Rd3 Nf8? 31.Bb2 Qe7 32.Qc3?? Bf5+= 33.e4? de4?? 34.Rd8–/+ Rd8 35.fe4?? Be4–+ 36.Kh1 Bg6 37.Bf3+= Rc8 38.Bc6 Rd8 39.Nb7 Rd3–/+ 40.Qc4? Qe2 41.Bf6 gf6 42.Qa4 Qf2 43.Qc4?? Qg1# 0–1. Franke,Roland (1895) – Fischbach,Horst (1850), Gemuend tt, 1999.

13.Qb3 Qd6

14.cd5 ed5 15.Qc2 Rfe8 +=.

14.g3 e5 15.cd5 Nd5 16.Nc4 =.

14.g3 h6

15.ab6 ab6 16.cd5 ed5 =.

15.ab6 Nb6 16.Be5 Qd7 17.Bb8 Rb8 18.Ra7 +/–.

15.Rfd1 e5 16.cd5 Qd5 17.Qd5 Bd5 18.Nc4 =.

15.Rfd1 Ne8

16.d4 cd4 17.ed4 dc4 18.Bc4 +=.

16.d4 f5 17.Qc2 Nef6 +=.

16.d4 f5 17.Ne5 Ne5 18.de5 Qc7 19.Bc3 +=.

16.d4 f5 17.Ne5 Nef6 18.a6 Ba8 (18...Ne5?? 19.de5 (19.ab7?! Ned7+=) 19...Qc7 20.ef6+– (< 20.ab7 Ne4+–)) 19.Rac1 Rc8 (19...Ne4 20.f4+=) 20.f4 Ne4 (20...Qc7 21.Ba3+=) 21.Ba3 (21.Ne4 fe4 22.cd5 Bd5 23.dc5 Nc5+/–) 21...Ndf6 (21...Nd2 22.Rd2 Ne5 23.fe5+=) 22.Ndf3 (22.Ne4 Ne4 23.Bf3 Qd8+=) 22...Rfd8= 23.Qc2 Qf8 (23...Qe7 24.Nd2+=) 24.dc5 bc5 (24...Be5 25.Ne5 bc5 26.Bb2+=) 25.Nd4 Qe8 (25...Re8 26.Ndc6+/–) 26.Ndc6+/– Bc6 ½–½. Kuehn,Peter – Martin,H, corr DDR–ch11 sf09, 1981.

16.d4 f5 17.Ne5 Nef6 18.Ng6 Rfe8 +=.

16.cd5 ed5 17.Qc3 Nef6 =.

13.ab6 ab6

14.Qc2 e5 15.cd5 Nd5 16.Nc4 Nb4 17.Qc3 f6 18.e4 Rfe8 19.Ba3 Bc7 20.Qb3 Nf8? (Better is 20...Qe6–/+) 21.Bb4+– cb4 22.Nd6 (22...Qe6 23.Qe6 Ne6 24.Nb7+–) 1–0. Bonetti,Shane – "Schlechter" (1800), ICC, 2002.

14.Qc2 e5 15.cd5 Nd5 16.Nc4 (16.Qb3 Kh8+=) 16...f6 (16...f5 17.e4 Nb4 18.Qb3 fe4 19.de4=) 17.Qb3 (17.Rfd1 f5 18.e4 Nb4+=) 17...Kh8 (17...f5 18.e4 Nf4 19.Rfe1 fe4 20.de4 Be4 21.Nce5 Bd5 22.Bc4 Ne5 23.Bd5 Nd5 24.Be5=) 18.Nfd2 (18.h4 e4 19.de4 Qe4=) 18...f5 19.Rae1 (19.h3!?+=) 19...e4+= 20.g3 (20.Ra1 ed3 21.Bd3 Nb4+=) 20...N5f6 (20...ed3 21.Bd3 Nb4 22.Be2+=) 21.d4 Bd5 (21...Bc7 22.Ra1=) 22.Qa4 (22.Ra1 Rc8=) 22...Bd6 (22...Bc7 23.Ra1=) 23.Nd6 Qd6 24.Nc4 Qe6 25.Ra1 Ra8 26.Qc2 cd4 27.Bd4 Rac8 28.Rfc1 Nc5?? (28...Rc7 29.Ra3=) 29.Qd1?? (better is 29.Nb6 Qb6 30.Bc5+–) 29...Nfd7+= 30.Ra7 Nb7?? (better is 30...Rfd8+=) 31.Nb6+– Nb6 32.Ra6 Rc1 33.Qc1 Rc8 34.Qa3 Bc4?? (34...Qd6 35.Qd6 Nd6 36.Rb6 Nf7+–) 35.Rb6 Qb6 36.Bb6 Be2 37.Qb2 Bd3 38.Bd4 Rc2 39.Qa3 Kg8 40.Kg2 Kf7 41.Qb3 Rc4 42.b6 g6 43.Qa2 Ke6 44.Qa8 Rc1 45.Qe8 Kd6 46.Qe5 Kd7 47.Kh3 Rg1 48.Qc7 Ke6 49.Qc8 Kd6 50.Qb7 g5 51.Qc7 Kd5 52.Qc5 Ke6 53.Qc6 Ke7 54.Bc5 Kf7 55.Qd7 Kg6 56.Qe8 Kg7 57.Bd4 Kh6 58.Qe6 Kh5 59.Qe7 Kh6 60.Bg7 1–0. Schuhler,Ernst – Kollowa,Kurt, DDR–ch M627 corr, 1980.

14.Qc2 e5 15.e4 de4 16.de4 +=.

14.Qc2 Ng4 15.h3 Nge5 16.Rfd1 Nf3 17.Nf3 f5 =.

14.Qc2 Ng4 15.h3 Nge5 16.Ne5 Ne5 17.Nf3 f6 18.Ne5 fe5 19.Bg4 Qd6 20.e4 Rf4 21.g3 Rf7 22.Rad1 Qe7 23.Qe2 g6 24.h4 Rdf8 25.Bc1 Bc7 26.Bg5 Qd6 27.Bh6 Re8 28.Bh3 Bd8 29.Qg4 Kh8 30.f4 Bf6 31.h5 ef4 32.hg6+/– Bd4 33.Kh1 hg6 34.Qg6 Qe7 35.Rf4 Rf4 36.Bf4 de4 37.de4 Rg8 38.Qh5+– Qh7 39.Be5 Be5 40.Qe5 Qg7 41.Qg7 Rg7 42.Rd8 Kh7 43.Rd6 Be4 44.Kh2 Ra7 45.Be6 Ra1 46.g4 Ra4 47.Rb6 Bd3 48.Rc6 Bc4 49.Bf5 Kg7 50.Rc5 Be2 51.Kg3 Rb4 52.Bd7 Kf6 53.Rf5 Kg7 (53...Ke7 54.Re5 Kd7 55.Re2 Rb5 56.Kh4+–) 1–0. Zenner,Claus – Weinitschke,Guenter, corr DDR–ch M533, 1970.

14.d4 cd4 15.Ba3 Bd6 16.Bd6 Qd6 17.ed4 =.

14.d4 e5 15.de5 Ne5 16.Ne5 Be5 17.Be5 Qe5 18.Ra7 d4 19.ed4 (< 19.Rb7 de3 20.f4 Qb2–/+) 19...Qb8 20.Qa1 Rd4 21.Bf3 (21.Nb3 Rd7 22.Ra2 Re8=+) 21...Bf3 (21...Rd2?! 22.Rb7 Qd6 23.Qc1=) 22.Nf3 Rc4 23.Ng5 (23.Re1 Rb4–/+) 23...Qf4 (23...Ng4 24.g3 Qd6 25.Qa2–/+) 24.Qa2=+ Ng4 (24...Ne8 25.g3 Qg4 26.h3+=) 25.g3 Qd4 26.Re1 (26.Ra8 Qd5 27.Rf8 Kf8 28.Nh7 Kg8=+) 26...Qd5–/+ 27.Ra4 (27.Rae7 Nf6 28.R7e5 Qd3–/+) 27…Ne5 (28.Rc4 Qc4–/+) 0–1. Sokolski,Aleksey Pavlovich – Yefremov,Dmitry V, corr USSR ch–02, 1952.

11.a4 e5

12.a5 ba5 13.Nb3 dc4 14.dc4 a4 15.Na5 Bf3 16.Bf3 =+.

12.a5 ba5 13.Nb3 Bc7 14.Na5 Ba5 15.Ra5 Nb6?? (better is 15...dc4 16.dc4 a6=) 16.Ne5+– d4? (better is 16...dc4 17.dc4 Ne4+/–) 17.ed4 cd4 18.Bf3 Bf3 19.Nf3 Qb4 20.Qa1 Rfd8 21.Nd4 Rd7 22.Nc6 Qd2 23.Bc1 (better is 23.Bf6 gf6 24.Ra6 Rb7+–) 23...Qd3 24.Ne5 Qf1 (24...Qe4 25.Nd7 Nfd7 26.Ra7 Re8+–) 25.Kf1 Re7 (25...Rd1 26.Ke2 Rh1 27.c5+–) 26.c5 Nbd5 27.Nc6 Rc7 28.Ra7 (better is 28.Bg5 h6 29.Bf6 Nf6+–) 28...Raa7 29.Na7 Rc5 30.g3 h6 31.Kg2 Ne4 32.b6! Nb6 33.Qd4 (better is 33.Be3!? Nd7 34.Bc5 Nec5+–) 33...Rc1 34.Qe4 Rc7 (34...Nd7 35.Qe8 Nf8 36.Nc8+–) 35.Nc6 f5 (35...Kh8 36.Qe8 Kh7 37.Ne7 Re7 38.Qe7+–) 36.Qe6 Kh8 (36...Kh7 37.Nd8 Na8 38.Qf5 g6 39.Qa5+–) 37.Qe8 (better is 37.Ne7 Re7 38.Qe7 Kh7+–) 37...Kh7 38.Ne7 Re7 39.Qe7 h5 (39...Nd5 40.Qc5 Nf6 41.Qf5 Kg8 42.Qe6 Kf8 43.f4+–) 40.Qc5 1–0. Tilp,Andreas – Grzendziel,A, DDR corr, 1988.

12.a5 ba5 13.Nb3 Bc7 14.Na5 Ba5 15.Ra5 dc4 16.dc4 a6 =.

12.d4 e4 13.Nh4 Qe6 =+.

12.cd5 Bd5 13.Qc2 Rad8 =.

12.Rc1 e4

13.de4 de4=+ 14.Ng5 h6 15.Nh3 Rfd8 =+.

13.de4 de4=+ 14.Nh4 Qe6 15.Nb3 =+.

13.de4 de4=+ 14.Nh4 g6 15.Qe1 a6 =+.

13.de4 de4=+ 14.Nh4 g6 15.f3 ef3 16.Bf3 Qe3 17.Rf2? Bf3?? 18.Qf3–/+ Qf3 19.Nhf3 Rfe8 20.Re1 Re1–+ 21.Ne1 Ng4 22.Re2 Bh2 23.Kh1 Bd6 24.Nef3 Kf8 25.Kg1 Bf4 26.Bc3 Be3 27.Kf1 Re8 28.g3 f6 29.Kg2 Re6 30.Nf1 Kf7 31.N1h2 h5 32.Ng4 hg4 33.Nh2 f5 34.Nf1 Bg5 35.Re6 Ke6 36.Bd2 Bd2 37.Nd2 Ke5 38.Nb3 Ke4 39.Kf2 Kd3 (40.Nc1 Kc4–+) 0–1. Zimmer – Loetzbeier, (year?).

13.de4 Ne4 14.cd5 Bd5 15.Ne4 Be4 16.Nd2 +=.

13.Nh4 Qe6 =.

12.cd5 Nd5

13.Qb3 Nb4 14.Nc4 =.

13.Qb3 Rad8 14.a5 Bb8 15.ab6 ab6 16.g3 (16.Ra3 Rfe8=) 16...Rfe8 (16...Nb4 17.Bc3=) 17.e4 N5f6 18.Nc4 Kh8 (18...Ng4 19.Ra2=) 19.Ne3 (19.Ra2 Bc8=) 19...Ng8 (19...Qf8 20.Ra2=) 20.Nf5 (20.Ra2 Nh6=) 20...Qf6 21.Bc1 (21.Ra2 Bc8=) 21...h6 22.g4 Qe6 (22...Ne7 23.Ne7 Re7 24.Kh1=) 23.Qc3 (23.Qe6 Re6 24.g5 hg5 25.Bg5 f6=) 23...f6 24.h4 Ne7 25.h5 Nf8=+ 26.N3h4 Kh7 27.f3 Ng8 28.Be3 Qd7= 29.Qc4 Ne6 30.Ng6 Nc7 31.Rfb1= Bc8 32.Ra3 Ne6 33.Kf2 Qc7 34.Rc1 Qd7 35.Bd1 Nc7 36.Rb1 Qe6 37.Bb3+= Qc4 38.Bc4+/– Be6 39.Rbb3 Rd7 40.Ke2 Bf5 41.gf5 Ne7 42.f4 ef4 43.Nf4 Nc8 44.Nd5?? Nd5–/+ 45.Bd5 Rd5! 46.Ra8 Ne7–+ 47.Rb8 Rb8 48.ed5 Nf5 49.Kf2? Ne3 50.Ke3 Re8 51.Kd2 Re5 52.d6? Rd5 53.Ra3 f5 54.Ra4 g5 55.hg6?? Kg6–+ (56.Ke3 Rd6–+) 0–1. Schuehler,Ernst – Abegg,F, corr ICCF EU/M/GT/233 (year?).

13.Qb3 Rad8 14.a5 Bb8 15.Rfc1 Rfe8 +=.

13.Ne4 f5 14.Nd6 Qd6 15.Qb3 Kh8 =.

13.Ne4 f5 14.Nd6 Qd6 15.d4 e4 16.dc5 bc5 (< 16...Qc5 17.Ba3 ef3 18.Bc5 fe2 19.Qe2 Nc5 20.Rfd1+=) 17.Nd2 Qg6 (17...Rad8 18.Qb3=) 18.Nc4 (18.a5 Rad8+=) 18...f4 19.Bh5 Qg5 20.Qg4 (20.Nd6 f3 21.g4 N7f6–/+) 20...Qe7= 21.Qd1 (21.Rad1!?=) 21...f3 22.Bg4 N7f6 (22...fg2 23.Kg2 Rad8 24.Qe2=+) 23.Bh3 (23.gf3 Ng4 24.fg4 Rad8=) 23...Rad8=+ 24.Qb3 Nb4 25.Rfd1 Nd3 (25...Rd3 26.Bc3=+) 26.Ne5 (26.gf3 Bd5 27.Qc2 Qf7 28.Bf6 Qg6 (28...gf6?! 29.Nd2=+) 29.Kf1 Qf6–/+ (29...gf6?! 30.Nd2=+; 29...Rf6?! 30.Rd2–+)) 26...Kh8 (26...Bd5!? 27.Qc3 Nb2 28.Qb2 Rde8=+) 27.Nd3= ed3 28.Rd3 Rd3 29.Qd3 fg2 30.Rd1 (better is 30.f4=) 30...Ne4 (30...Bf3 31.Qd6 Qf7+=) 31.Qd7+/– Nf2 32.Bg2 (32.Qe7?? Nh3) 32...Qg5 33.Qg7! Qg7 34.Bg7 Kg7 35.Rd7 Rf7 (35...Kf6 36.Rb7 (< 36.Bb7 Ng4+/–) 36...Nd1 37.Ra7+– (37.Rh7?! Ne3 38.Bf3 Ke6+–)) 36.Rf7 (36.Rb7?! Nh3 37.Kh1 Nf2 38.Kg1 Nh3 39.Kh1 Nf2 40.Kg1=) 36...Kf7 37.Kf2 (37...Bg2 38.Kg2+–) 1–0. Fritsch – Kunz, corr, 1975.

11.Qc2 a6

12.a4 ab5 13.ab5 e5 14.e4 d4 15.Nh4 g6 16.g3 (16.Rfe1 Kg7=) 16...Rfe8 (16...Qe6 17.Nhf3=) 17.Rfb1 (17.Ng2 g5=) 17...Nf8 (17...Qe6 18.Nhf3=) 18.Ndf3 (18.Nhf3 Ne6=) 18...N6d7 (18...Ne6 19.Nd2=) 19.Bc1= Ne6 20.Qd2 Qf8 (20...Qf6 21.Ng5=) 21.Ng5 Ng5 (21...Ng7 22.Bg4 Nf6 23.Bh3=) 22.Qg5 Qg7 23.Qh6 (23.Bd2 f5 24.ef5 Be7=) 23...Be7+= 24.Qg7 Kg7 25.Ng2 (25.Bg4 f5 26.ef5 Bh4 27.fg6 Nf6+=) 25...f5 26.ef5 (26.f3 h6+=) 26...gf5–/+ 27.Bh5 (27.h4 e4–/+) 27...Rf8 (27...Rg8 28.Be2–/+) 28.h4 e4 29.Nf4 Ra1 (29...Kf6 30.Nd5 Bd5 31.cd5–/+) 30.Ra1+= Ra8 31.Ra8 Ba8 32.de4 (32.Kf1 Ne5 33.Be2 Kf6+=) 32...fe4–/+ 33.Ne6 Kg8 34.Nc7 (34.Bf4 Nf6 35.Bd1 Kf7 36.Ng5 Ke8+=) 34...Bb7 35.Be8? Ne5–+ (35...Ne5 36.Bf4 Nc4–+) 0–1. Dzuris,Ivan – Grund,Karl Heinz, corr ICCF theme, 1972.

12.a4 Rfd8 13.ba6 Ra6 14.d4 cd4 15.Nd4 =.

12.a4 e5 13.cd5 Bd5 14.ba6 =.

12.a4 h6 13.cd5= ed5 14.ba6 Ra6 15.Nh4 (15.Rfb1 Re8=) 15...Qe6 16.d4 (16.Nhf3 Re8=+) 16...c4 (16...Ra5 17.Nf5 Rc8 18.Bc3=) 17.Nf5 Bb4 18.Ng3 (18.Nf3 Ne4 19.Ng3 Ng3 20.hg3 Rc8–/+) 18...Re8 (18...Rfa8 19.Nf3–/+) 19.Bc3=+ Bc3 20.Qc3 Rea8 21.Bd1 Bc6 22.Qb4 Kh8 (22...Rc8 23.Bc2=+) 23.Bc2= Bb7 (23...Rc8 24.Qc3=) 24.Rfb1 Qg4 25.Bf5 Ra4?? (better is 25...Qg5=) 26.Ra4+– (26.Bg4?! Rb4 27.Ra8 Ba8 28.Rb4 Ng4+=) 26...Ra4 27.Qa4 (27.Bg4?! Rb4 28.Rb4 Ng4+=) 27...b5 28.Qb5 Qf5 29.Nf5 c3 30.Nf3 c2 31.Ra1 Bc8 32.Nd6 Nb6 33.Qb6 Bg4 34.Qc6 g6 35.Ra7 Bd7 36.Qc2 Kg8 37.Ne5 Be6 38.Ndf7 Kf8 39.Qg6 Bd7 40.Qf6 h5 41.Rd7 Ke8 42.Nd6# 1–0. Mephisto Mondial – REXChess, 1994.

12.ba6 Ra6 13.d4 =+.

12.ba6 Ra6 13.d4 cd4 14.cd5 =+.

12.ba6 Ra6 13.cd5 ed5 14.a3 =+.

12.ba6 Ra6 13.cd5 ed5 14.a4 =+.

11.Qc2 e5

12.cd5= Bd5 13.Nc4 a6 14.ba6 Rfe8 15.a4 =.

12.cd5= Bd5 13.Nc4 Rad8 14.a4 Bc7 (14...e4 A) 15.Nd6? ef3 (< 15...Qd6 16.de4 Ne4 17.Rfd1+=) 16.Nf5 Qe6 17.Nh6 gh6 18.gf3 Kh8–+; B) 15.de4 Be4 16.Qc3+=) 15.a5 (15.e4 Bc4 16.dc4 Nh5+=) 15...Rfe8 (15...Bc4 16.Qc4 ba5 17.Rfc1=) 16.ab6+= ab6 17.Ra6 (17.e4!? Be6 18.Ra7 Bc4 19.dc4+/–) 17...e4= 18.de4 Be4 19.Qc3 Nb8 20.Raa1 (20.Ra3 Qd7+=) 20...h6 (20...Qd7 21.Qb3=) 21.Rfd1+= Rd1 22.Rd1 Rd8 (22...Qe6 23.Ncd2+=) 23.Rd8 Qd8 24.Nfd2 Bb7 25.Nf3 (25.Qc2 Nd5+=) 25...Be4 26.Nfd2 (26.Ncd2 Bf5+=) 26...Bb7= 27.Nf3 (27.Qc2 Qe7+=) ½–½. Kupka,Slavoj – Blatny,Frantisek, Telnice/Usti, 1963.

12.cd5 Nd5

13.Nc4 Rfe8 14.Nfd2 Bb8 15.Ne4 a6 16.a4 f5 =.

13.Nc4 Rfe8 14.Nfd2 Bb8 15.g3 a6 16.ba6 Ra6 17.Bf3 =+.

13.Nc4 Rfe8 14.Nfd2 Bb8 15.g3 Nc7 16.a4= a6 17.Ne4 Nd5 18.Bf3 =.

13.Nc4 Rfe8 14.Nfd2 Bb8 15.g3 Nc7 16.a4= Ne6 17.Bf3 (17.a5 Bc7+=) 17...Bf3= 18.Nf3 Ng5 19.Qe2 (19.Ng5 Qg5 20.a5 Bc7=) 19...Nf3 (19...a6 20.Rfb1=) 20.Qf3 Bc7 21.Rfd1 Rac8 (21...a6 22.ba6 Ra6 23.Qb7=) 22.Qb7+= Bb8 23.a5 Rc7 24.Qe4 f6 (24...Qe6 25.f3+=) 25.Bc3 Qe6 26.ab6 (26.Rac1 f5 27.Qf3 e4+=) 26...Nb6 (26...ab6 27.Ra8+=) 27.Ra6 Rd7 28.Nb6 ab6= 29.Rda1 Qb3 30.Qc6 Red8 31.R6a3 Qc2 32.Qb6+= Rd3 33.Be1 Rd1 34.Rd1 Qd1 35.Ra1 Qd6 36.Qc6 Qc7 37.Rd1!?+= Rc8?? 38.Qe6+– Kh8 39.Rd7 Qd8 40.Rd8 Rd8 41.Ba5 (41...Rf8 42.Bb6+–) 1–0. Ballon,Guenther Jan (2265) – Paetz,Carsten, Leningrad op, 1991.

13.Rfd1 a6 14.a4 =+.

13.Rfd1 Rae8 14.e4 Nf4 15.Nc4 a6 =+.

13.Rfd1 Rae8 14.e4 Nf4 15.Bf1 a6 16.a4 =+.

13.Rfd1 Rae8 14.e4 Nf4 15.Bf1 Kh8 16.Nc4 Bb8 17.a4 f5 18.Rd2 g5 (18...a5 19.Ne3=) 19.Ne3 fe4 (19...g4!? 20.Ne1 fe4 21.de4 Nf6=) 20.de4+/– Nf6 21.Nf5 (21.Ng5!? Qg7 22.h4+/–) 21...Qf7 (21...Be4 A) < 22.Ng5 Qb7 (22...Bc2?! 23.Ne7 Re7 24.Rc2=) 23.Ne4 Ne4–/+; B) 22.Ne7 Bc2 23.Nc6+/– (< 23.Ng5 Re7 24.Rc2 Rg7=)) 22.Bc4 (22.Ng3 Qg6 23.Re1 Bc7+=) 22...Qg6= 23.Re1 (23.Ng3 Ne4 24.Rd7=+) 23...Be4–/+ 24.Re4 Ne4 25.Qe4 Qf5 26.Qf5 Rf5 27.Rd7 h6 28.g3 (better is 28.Kf1!?–+) 28...Nh3 29.Kg2 g4 30.Nh4 (30.Rf7 Rf7 31.Bf7 gf3 32.Kh3–+) 30...Rf2 31.Kh1 Rf6 32.Bd3 (32.Rf7 Nf2 33.Kg1 Ne4–+) 32…Nf2 (33.Kg2 Nd3 34.Rd3 Ref8–+) 0–1. Scheele,Marcus – Crell,Helmut, Bochum–ch, 1991.

13.Rfd1 Rae8 14.Ne4 Nb4 15.Qc3 a6 =.

13.Ne4 =.

11.h3 Rac8

12.a3 Ra8 =.

12.Re1 Rfe8

13.Qc2 Ra8 =.

13.Bf1 e5 14.Be2 =+.

13.Bf1 Bb8

14.Rc1 e5 15.cd5 Bd5 16.Nc4 =.

14.e4 de4 15.de4 Rcd8 =.

14.Rc1 h6

15.Qc2 e5 16.e4 d4 17.Qa4 =.

15.Be2 Bd6 =.

15.Qc2 Qd8

16.Qd1 dc4 17.Nc4 a6 18.ba6 Ba6 19.a4 =.

16.Qd1 e5 17.cd5 Nd5 18.Qa4 Qe7 =.

16.Qd1 e5 17.Nh4 Qc7 18.Nf5 =.

16.Qd1 e5 17.Nh4 e4 18.Nf5 Qc7 19.g3 Ne5 =.

16.Qd1 e5 17.Nh4 e4 18.g3 Ne5=+ 19.de4 de4 20.Qc2 Nd3 (20...Qd7 21.Red1=+) 21.Bd3 ed3 22.Qb3 (22.Bf6 Qf6 (< 22...gf6 23.Qd1 Qd7 24.Kh2+=) 23.Qd3 Rcd8=+) 22...Qd7 (better is 22...Ne4 23.Nhf3 Qd7 24.Ne4 Be4–/+ (24...Re4 25.Red1 Qh3 26.Qd3 Bg3 27.Qd7–+)) 23.Kh2? (better is 23.Bf6 gf6 24.e4=) 23...Ne4–+ 24.Ne4 (24.f4 Nf2 25.Kg1 Nh3 26.Kh2 Ng5–+) 24...Re4 (24...Be4?! 25.Rcd1–/+) 25.Ng2 (25.Nf3 Qf5 26.Qd3 Qf3–+) 25...d2 26.Rcd1 (26.Red1 dc1Q 27.Rd7–+ (27.Bc1?? Qe6–+)) 26…de1Q (27.Re1 Qd2–+) 0–1. Gross,Wilhelm – Merten,Rainer, xxv/20, 1994.

16.Be2 dc4 17.dc4 Bd6 =.

11.h3 Rfe8

12.d4 Rec8 =+.

12.Re1 a6 13.ba6 Ra6 14.d4 =+.

12.Re1 Rad8 13.Qa4 a6 =.

12.Re1 Rad8 13.Qc2 a6 14.a4 =.

12.Re1 Rad8 13.Qc2 Bb8 14.a4 e5 15.cd5 (15.e4 de4 16.de4 Bc7=) 15...Nd5 16.e4 (16.a5 Nb4 17.Qc3 Nf6=) 16...Nf4 17.Bf1 (17.a5 Qd6=) 17...Nf8 (17...a6 18.g3 Ne6 19.Rec1=+) 18.Nc4 f6 (18...N8g6 19.g3 Ne6 20.a5= (20.Be5?? Ne5 21.Nce5 Be5 22.Ne5 Nd4–+; < 20.Nce5 Ne5 21.Ne5 Be5 22.Be5 Ng5=+; < 20.Nfe5 Ne5 21.Ne5 Be5 22.Be5 Ng5=+)) 19.a5 ba5 (19...Qe6 20.Be2=) 20.Na5+= Rc8 (20...N8e6 21.g3 Ng6 22.Nb7 Qb7 23.Qc4+=) 21.Qc4+/– Kh8 22.Nh4 Nd7? (better is 22...Rc7+/–) 23.Nf5+– (23.Nb7?! Nb6 24.Qc3 Qb7+=) 23...Nb6 24.Ne7 Nc4 25.Nc8 (25.Nb7?! Re7 26.dc4 Rb7+/–; 25.Nc4?! Re7 26.Rec1 Ne6+=; 25.dc4?! Re7 26.Nb7 Rb7+/–) 25...Nb2 26.Nb7 (26.Na7 Ba8 27.N7c6 Nbd3+–) 26...Rc8 27.Ra3 Rc7 (27...c4 28.dc4 Nc4 29.Bc4 Rc4 30.b6 ab6 31.Nd6+–) 28.Na5 Rd7 29.Nc6 Rb7 30.Nb8 (30.Rb1 Rb5 31.Ra2 a6 32.Rab2 Rb2 33.Rb2 Bd6+–) 30...Rb8 31.Ra7 (31.Rb1!? Rb5 32.Ra7 Kg8 33.Ra8 Kf7+–) 31...Nfd3 32.Rea1 h6 (32...c4 33.b6! Nc5+–) 33.Ra8 Ra8 (33...Rg8 34.b6 Nb4 35.Bb5+–) 34.Ra8 Kh7 35.b6 c4 36.b7 (36...Nf2 37.Kf2+–) 1–0. Gross,Wilhelm – Merten,Rainer, xxx/20, 1997.

9.d4 Bb7

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

10.Nc3 dc4 11.dc5 (11.Bc4 Bf3 12.Qf3 cd4=+) 11...Nc5=+ 12.Bc4 Ng4 13.g3 (13.Be2 a6=) 13...Qf6 (13...Bf3 14.Qf3 Nh2 15.Kh2 Qh4 16.Kg2 Qc4 17.Rh1–/+) 14.Be2 (14.Ne4! Qh6 15.Qd6 Be4 16.Nh4=+) 14...Rfd8–/+ 15.Qd4 Ne5 (15...Bf3?! 16.Qf6 Nf6 17.Bf3=) 16.Ne1 Bc7 17.Qb4 Ncd3 (17...a5!? 18.ba6 Na6–/+) 18.Bd3 Nd3 19.Nd3 Qf3 20.e4 Rd3 21.Rae1 (better is 21.Rfd1!? Be5 22.Rd3 Qd3 23.Qe7 Bc3 24.Qb7=) 21...Bd6–+ 22.Qa4 Bc5 (< 22...Rc3 23.Qd4 Bb4 24.Qb4=+) 23.Nb1 f5 (24.Nc3 Rd2–+ (24...Rc3?! 25.Bc3 Qc3 26.Qd1–+)) 0–1. Bedbur,Heinz – Sternik,Ryszard, corr SOK–90–57, 1990.

10.Nbd2 a6 11.cd5 ed5 12.dc5 bc5 13.a4 =.

10.Re1 Rc8 11.Nbd2 Bb8 12.Rc1 Qc7 13.Nb3 dc4 14.Bc4 (better is 14.Nbd2!?=) 14...Bf3–/+ 15.Qf3 Qh2 16.Kf1 cd4 17.Nd4?? (better is 17.Bd4 Ne5 18.Be5 Be5 19.Red1–/+) 17...Ne5–+ 18.Qe2 (18.Qh3 Qh3 19.gh3 Rc4 20.Nc6 Rc1 21.Rc1–+) 18…Qh1# 0–1. Djakov,Joao – Kirk,James, Internet Section, 2004.

10.Ne5 Qc7 11.f4 Ne4 12.Nd2 f5 13.Ne4 fe4 14.Bh5 (14.cd5 ed5 15.Bg4 Nf6=) 14...Nf6 (14...cd4 15.Nd7 Qd7 16.Qd4=+) 15.Bg4= Ng4 16.Qg4 Rf5 (16...Rf6 17.Rfd1=) 17.cd5 Bd5 18.Rac1 (18.dc5 Bc5 19.Qg3 a6=) 18...Ba2 19.Nc4 Bf8 20.Qe2 Rc8 21.Ba3 (21.dc5 Rc5 (< 21...bc5 22.Ra1 Bc4 23.Qc4+=; 21...Qc5?? 22.Na3+–; 21...Bc5?! 22.Ne5=+) 22.Ne5 Bb3 23.Rc5 Bc5=+) 21...Bc4 22.Qc4 Qd7 23.Rfd1 (23.Bb2 Rd5=+) 23...Rd5 24.Kf1 (24.Rf1 Rb8 25.Bb2 cd4 26.Bd4 Rb5–/+ (26...Qb5?! 27.Qc7 Qe8 28.Qa7=)) 24...Rd8–/+ 25.Bb2 Be7 (25...Bd6 26.Ra1–/+) 26.Ke2 (26.Ra1 Rc8 27.Qa4 Bf6–/+) 26...Bf6 27.Rc2 (27.Ra1!?–/+) 27...cd4–+ 28.ed4 (28.Bd4 Rc5 (< 28...Rd4 29.ed4 Qe8 30.Ke3+/–; 28...Bd4?! 29.Rd4 Qe8 30.Ke1–/+; 28...Rb5?! 29.Rcd2 Rd5 30.Ke1–+) 29.Qa4 Rc2 30.Qc2 Qb5 (30...Bd4?! 31.Qc4=+) 31.Kf2 Qh5–+) 28...Qb5 (better is 28...Rb5!? 29.Ke1–+) 29.Qb5–/+ Rb5 30.Ke3 e5 (better is 30...a5–/+) 31.f5?? (better is 31.fe5 Be5! 32.h3–/+) 31...ed4–+ 32.Ke4 (32.Bd4 Rb3 33.Ke4 Rb4–+) 32...Re8 33.Kd3 Re3 34.Kd2 Reb3 (34...Rf5!? 35.Kc1 Rd5 36.Rc8 Kf7 37.Rc7 Ke6 38.Ra7–+) 35.Rc8 Kf7 36.Rc7 Ke8 37.Bc1 (37.Ba1 a5 38.Kc2 d3 39.Rd3 Rd3 40.Bf6 Rd7 (40...gf6?! 41.Kd3 h5 42.Rb7–/+) 41.Rd7 Kd7–+ (41...gf6?! 42.Rh7 Rf5 43.g4 Rf2 44.Kd3–/+)) 37...Rc5 (37...Rc3 38.Rc3 dc3 39.Kc2 Rf5 40.Be3–+) 38.Rc5 (38.Re1 Kd8 39.Rc5 bc5–+) 38...bc5 39.Ke1 (39.Re1 Kd7–+) 39...Rb1 (39...c4 40.g4–+) 40.Bf4 Rd1 41.Kd1 Kd7 (42.g3 a5–+) 0–1. Eimers,J – Kettl,Hans Heinrich, corr SOK–87–05, 1987.

10.dc5 bc5

11.Nbd2 Qc7

12.Qc2 e5 13.cd5 Bd5 14.e4 Bb7 15.Rfd1 +=.

12.Qc2 e5 13.cd5 Nd5 14.Nc4 Rab8 +=.

12.Qc2 e5 13.cd5 Nd5 14.Bd3 N7f6 15.a3 a6 +=.

12.Qc2 e5 13.cd5 Nd5 14.Bd3 N7f6 15.Ne4 Nb4 16.Nf6+/– gf6 (16...Kh8 17.Qb1 Nd3 18.Qd3 gf6 19.Rfd1+=) 17.Bh7 Kg7 18.Qb1 Bf3 (18...c4 19.Rc1 Rh8 20.Be4+–) 19.gf3 Rh8 (19...Rab8 20.Kh1 Rh8 21.Rg1 Kf8 22.a3+/–) 20.Be4+– Qd7 21.Ba8 Qh3 22.Rd1 Kf8 23.Qe4 (23.Rd6?? Rg8 24.Qg6 Rg6 25.Kh1 Qg2) 23...f5 24.Qe5 Be5 25.Be5 Rg8 26.Bg3 Ke7 27.Bc6 c4? (27...f4!? 28.ef4 a6+/–) 28.Rd7 (28.Rac1 f4 29.ef4 Rd8 30.Rd8 Kd8+–) 28...Ke6 29.Rad1 Nd3 30.Ra7 Rd8 31.Ra6 Ke7 32.Ra1 c3 33.Ra7 Ke6 34.Bd7 Kf6 35.e4 c2 36.Bf5 Qh5 37.Rc7 Nb4 38.Rf1 Rd1 39.Rc3 Qh6 40.f4 Qf8?? 41.Bh4+– Kg7 42.Rg3 (42...Kh6 43.Bg5 Kg7 44.Be7 Kh8 45.Bf6 Qg7 46.Bg7 Kg8 47.Bc3 Kf8 48.Bb4 Rd6 49.Bd6 Ke8 50.Rg8#) 1–0. Hirtreiter,Michael – Schosser, BdF, 1987.

12.Qc2 e5 13.cd5 Nd5 14.Bd3 N7f6 15.Ne4 Ne4 16.Be4 Nb4 17.Qb1 Be4 18.Qe4 +=.

12.Qc2 Rfe8

13.Rfd1 Rad8 14.a4 e5 15.Nf1 d4=+ 16.Nh4 (16.N3d2 Qb8=+) 16...g6 (16...Re6 17.a5=+) 17.a5= Bf8 (17...Be4 18.Qd2=+) 18.a6 (18.Ng3 Be7=) 18...Ba8 (18...Be4 19.Qb3=+) 19.Qb3 (19.Nd2 Bh6 20.Ra3 Qd6=+) 19...Ne4 (19...Bg7 20.Qc2=+) 20.Nf3 (20.Rab1 Nd6=+) 20...Bg7 21.Rac1 (21.N3d2=+) 21...Nc3 (21...f5!?=+) 22.Bc3= dc3 23.Ng5 (23.Qc3? e4 24.Nd4 Nf8–+) 23...e4 24.Nh3 (< 24.Rc3 Qe5 25.Nf7 Kf7–/+ (25...Qc3? 26.Qc3 Bc3 27.Nd8 Rd8 28.Bg4+–)) 24...Nb6 25.Nf4 f5 26.Rd8+= Qd8 27.Bd1 Re7 28.Ne2 Rd7 29.Bc2 Qf6 30.Bb1 h5 31.Nc3+= h4 32.Na4 Na4 33.Qa4 Qd8 34.Bc2 g5 35.Rb1+/– Rd6 36.Rd1 Kf7 37.Rd6 Qd6 38.h3 Be5 39.Qa5 Ke7 40.Qe1 Qh6 41.Qe2 Qh8 42.Ba4 Bd6 43.Qd1 Ke6 44.Qd2 Ke7 45.Qd1 Ke6 46.Bc2 Qf6 47.Qh5+– (47...Be7 48.Qe8+–) 1–0. Bonetti,Shane – Vornanen,Alpo, TT–10 ETC, 2004.

13.Rfd1 Rad8 14.a4 e5 15.h3 d4 16.e4 Qa5 =.

13.Rfd1 Rad8 14.cd5 ed5 15.Rac1 Ra8 =.

13.Rfd1 e5 14.h3 =.

13.Bd3 d4 =.

13.h3 e5 14.cd5 Nd5 15.Ng5 g6 (15...N7f6 16.e4 Nb4 17.Qc4=) 16.e4+= Be7 (16...Nb4 17.Qc4 Nb6 18.Qc3=) 17.Nf7+/– Kf7 18.Nc4?? (better is 18.ed5 Bd5 19.Bc4 Bc4 20.Nc4+=) 18...N5f6–+ (19.f3 Rad8–+) 0–1. De Smet – Hasler,Ulrich, corr ICCF TT–4–90, 1990.

13.h3 e5 14.cd5 e4 15.Ng5 Bd5 16.Nc4 =.

10.dc5 Nc5

11.Nbd2 Rc8 12.Nd4 Bb8 13.cd5 Nd5 14.Bf3 Nd3 15.Ba3 Nc3 16.Qb3 Bf3?? (better is 16...Qc7 17.g3 Rfd8+=) 17.N2f3+/– (17.Bf8? Bd5 18.Qa3 Qf8 19.Qf8 Kf8–+) 17...e5? (17...Re8 18.Nc6 Ne2 19.Kh1 Qd5 20.Qd5 ed5+–) 18.Bf8?? (better is 18.Nc6 Ne2 19.Kh1 Rc6 20.bc6+–) 18...ed4+= 19.Nd4 Kf8 20.g3 Rc5?? 21.Qc2 Nb4= 22.Qh7 Be5 23.Qh8 Ke7+= 24.Nf5 Kd7 25.Rad1 Nd1 26.Rd1 Rd5 27.Rd5 Nd5 28.Qh3 Kc7 29.Qg4 Nf6 30.Qg7 Qd1–/+ 31.Kg2 Qd5 32.Kg1 Ne4 33.Qf8 Nc3 34.Qe7 Kb8 35.Qe8 Kb7 36.Ne7 Qe6 37.Qd8?? Bf6–+ 38.Nc6 Ne2 39.Kf1 Qh3 40.Ke2 Bd8 (40...Bd8 41.Nd8 Kc7–+) 0–1. Krebbers,W (2115) – Beckmann,A (1965), 21st Open Goch GER, 2010.

11.cd5 Nd5 12.Qd4 f6 13.Nc3 =.

11.cd5 Nd5 12.Qd4 f6 13.Nbd2 Qe7 14.Nc4 Bc7 15.Qh4 e5 16.Ncd2 (16.Rfd1 Rfd8+=) 16...Rfd8 17.Nb3 a6 18.Nc5 bc5 19.ba6 Ba6 20.Ba6 Ra6 21.Qc4 Qe6 22.Qc5 Rc8 23.Qb5 Rb6 24.Qe2 Bd6 (24...Rcb8 25.Ba3+=) 25.Rfd1= Nb4 26.Ne1 e4 27.Bd4 Ra6 Increases the pressure on a2 28.a3 Nd5 29.a4 (29.Qa6? Bh2 30.Kh2 Qa6–+) 29...Ra5 30.Qa2 Kf7 31.Rdb1 Nb4 32.Qd2 Rc4 33.Rc1 Rc1 34.Qc1 Nc6 35.Qb2 (35.Qc6?? Bh2 36.Kh2 Qc6–+) 35...Kg6 36.Bc3 Rc5 37.g3 White plans a5 37...Bc7 (37...h5 38.Ng2=) 38.Ng2+= Kf7 39.Nf4 Bf4 40.ef4 Kg6 (40...Qc4 41.Ra3 Qd3 42.Be1+=) 41.a5+= Qc4 42.Bd2 Rd5 43.Qc3 Qe2 44.Qc6 Rd2 45.Qc5 Rd3 46.f5 Kh6 47.Rf1 Rd1 48.Rd1 ½–½. Baumann,Walter (2010) – Owens,Steve (2025), corr WS/H/195 ICCF, 2009.

11.cd5 Bd5

12.Nc3 Bb7

13.Na4 Nce4+= 14.Rc1 Qe7 (14...Rc8!?+=) 15.Nd4+= Rfd8 (15...Rad8 16.Qc2+=) 16.Qc2= Rac8 (16...Ba3 17.Rfd1 Bb2 18.Qb2+=) 17.Nc6+= Bc6 18.bc6 Qc7 19.g3 (19.f4 Nc5 20.Bf6 gf6=) 19...Be5 20.Be5 Qe5 21.Rfd1 Rd1 (21...Rd5 22.c7 Ng5 23.Nb2+=) 22.Rd1 (worse is 22.Qd1 Nd5=) 22...b5 (22...Nd6!?+=) 23.Qd3+/– Nd5 (23...ba4?? 24.Qd8 Ne8 25.Qc8+–) 24.Bf3 (24.Qb5 Qf5 25.f4 Ng3 26.hg3 Qh3 27.Rd5 Qg3 28.Kf1 ed5+=) 24...Ng5 (24...Nd6 25.e4 Ne4 26.Be4 ba4 27.Qa6+=) 25.Bd5 Qd5 26.Qd5 ed5 27.Rd5 ½–½. Benassi,Aspasio – Plock,Joerg, email, 2000.

13.Rc1 Rc8 +=.

13.Qd4 Qe7 A) 14.Qh4 A1) 14...a6 15.Rfd1 (15.a4 ab5 16.Nb5 Nfe4 17.Nd6 Qh4 18.Nh4 Nd6 19.Rfd1 Rfd8 20.Be5; 15.ba6 Ba6 16.Nb5 Nd5 17.Qd4 f6 18.Qh4 Nc7 19.Nfd4 Nb5 20.Nb5; 15.Nd4 Rfd8 16.ba6 Na6 17.Rfd1 Nc5 18.Ncb5 Nfd7 19.Qh5 Be5 20.a3; 15.Rfc1 Rfd8 16.ba6 Ba6 17.Nb5 Nfe4 18.Qg4 f5 19.Qh3 Qe8 20.Nd6; 15.a3 Rfd8 16.Rfd1 Nd5 17.Qe7 Ne7 18.Rab1 f6 19.Nd4 ab5 20.Ndb5) 15...Rfd8 16.a4 ab5 17.Nb5 Nfe4 18.Nd6 Qh4 19.Nh4 Nd6 20.Be5; A2) 14...Rfc8 15.Rfd1 (15.Rac1 a6 16.Rfd1 Rd8 17.a3 Nd5 18.Qe7 Be7 19.ba6 Na6 20.Nd5; 15.a4 Rc7 16.Nd4 Rac8 17.a5 Nd5 18.Qe7 Be7 19.Rfd1 Bf6 20.ab6) 15...Rd8 16.Rac1 a6 17.a3 Nd5 18.Qe7 Be7 19.ba6 Na6 20.Nd5; A3) 14...Rfd8 15.Rfd1 (15.Rfc1 Rac8 16.Rc2 Rc7 17.Nd4 Rdc8 18.Rac1 Qd7 19.Qh3 Nd5 20.Nd5; 15.Nd4 Rac8 16.Rfd1 Nd5 17.Qe7 Ne7 18.Rac1 Nd5 19.Nd5 Bd5 20.Bf3; 15.a4 a5 16.Rfd1 Rac8 17.Nd2 Nd5 18.Qe7 Be7 19.Nc4 Nc3 20.Rd8; 15.Rac1 a6 16.Rfd1 Nd5 17.Qe7 Be7 18.ba6 Ba6 19.Ba6 Ra6 20.Nd5) 15...a6 16.ba6 Ba6 17.Nb5 Nfe4 18.Qg4 f5 19.Qh5 Na4 20.Rdb1; B) 14.Rfd1 Rfd8 15.Qh4= (15.Qc4 a6 16.Qh4 Nd5 17.Qe7 Be7 18.ba6 Na6 19.Nb5 Nc5 20.Bd4) 15...a6 16.a4 ab5 17.Nb5 Nfe4 18.Nd6 Qh4 19.Nh4 Nd6 20.Bd4.

13.Qd4 Qc7

14.Rfd1 Rad8 15.Qh4 Rd7 16.Na4 e5 17.Rac1 Rc8 18.Nd2 Qb8 19.Nc5 Rc5 20.Rc5.

14.Rfd1 Rfd8 15.Qh4 Be7 16.Rac1 Rd1 17.Rd1 a6 18.Nd4 ab5 19.Ndb5 Qe5 20.Bc4.

14.Qh4 Rac8 15.Rfd1 (15.Rac1 Rfd8 16.Rfd1 Be7 17.Rd8 Rd8 18.Na4 Nfe4 19.Qg4 Bf6 20.Bf6) 15...Rfd8 16.Rac1 Be7 17.Rd8 Rd8 18.Na4 Nfe4 19.Qg4 Bf6 20.Bf6.

14.Qh4 Rfc8 15.Rfd1 (15.Rac1 Qe7 16.Rfd1 a6 17.ba6 Ba6 18.Ba6 Ra6 19.Nb5 Bb8 20.Bf6; 15.Rfc1 Rd8 16.Rc2 Rd7 17.Rac1 Rad8 18.Na4 Nfe4 19.Rc4 f5 20.R4c2; 15.Rad1 Be7 16.Rc1 a6 17.Rfd1 Nfe4 18.Qh5 Nc3 19.Bc3 ab5 20.Be5; 15.a4 Rd8 16.Rfd1 Nb3 17.Rab1 Be7 18.Qh3 Bb4 19.Qg3 Qg3 20.hg3; 15.Rab1 e5 16.Rfd1 Rd8 17.Na4 Na4 18.Qa4 e4 19.Rbc1 ef3 20.Rc7) 15...Be7 16.Rac1 a6 17.ba6 Ba6 18.Ba6 Ra6 19.Qh3 Rd8 20.Nb5.

14.Qh4 Rad8 15.Rac1 (15.Rfd1 Rd7 16.Rd4 Rfd8 17.Rc1 Qb8 18.Rcd1 e5 19.Rc4 a6 20.a4) 15...Rd7 16.Na4 Nfe4 17.Nc5 bc5 18.Rfd1 Bd5 19.Nd2 Nd2 20.Rd2.

14.Qh4 Rfd8 15.Nd4 (15.Rac1 Rac8= (15...Rd7 16.Rc2 Rad8 17.Rfc1 e5 18.Bc4 Bf3 19.gf3 Qb7 20.Kg2) 16.Rfd1 e5 17.Na4 Rd7 18.Nd2 Qb8 19.Nc5 bc5 20.Bd3; 15.Rfd1 e5 16.Bc4 Rac8 17.Rac1 Rd7 18.Nd5 Nd5 19.Bd5 Bd5 20.Rd5; 15.Na4 Nfe4 16.Nc5 Nc5 17.Rfc1 Qe7 18.Qg4 e5 19.Rd1 Rac8 20.Rac1; 15.a3 Nb3 16.Ra2 Be7 17.Qh3 a6 18.Ng5 Nd2 19.Rc1 Qd6 20.ba6) 15...Be7 16.Rfd1 Rac8 (16...Rd7 17.Nf3= (17.Rac1 Rad8 18.a3 Kh8 19.f4 Kg8 20.Qg3) 17...Rd1 18.Rd1 a6 19.Nd4 ab5 20.Ndb5) 17.Qh3 (17.Rac1 Rd7= 18.Nf3 Rd1 19.Rd1 a6 20.ba6) 17...Rd7 18.Rac1 Rcd8 19.f4 (19.a3 Bd6 20.Nc6) 19...e5 (19...h6 20.a3) 20.fe5 (20.Nf5 Rd2 21.Qg3 Ne8 22.Rd2 Rd2=) 20...Qe5 21.Rf1 Qc7 22.Bc4 Bc8 23.Qh4 Bb7 24.Ba1 h6 24...Nd5!? 25.Nd5 Bd5+=) 25.Nf5+= Qe5 (25...Qb8 26.Ne7 Re7 27.Rf6 gf6 28.Nd5 (28.Qf6?! Qd6 29.Nd5 Qf6 30.Bf6 Red7 31.Bd8 Bd5 32.Bd5 Rd5+=; 28.Qh6?! Rd6+/–) 28...Rd5 29.Bd5+–) 26.Qh3. Gierth,Karlheinz (2260) – Bringsken,Peter (2100), BdF T, 2004.

14.Qh4 e5 15.Rfd1 (15.Rac1 Rfd8 16.Rfd1 Rd7 17.Na4 Rc8 18.Nd2 Qb8 19.Nc5 Rc5 20.Rc5; 15.Rad1 Rfd8 16.Rd2 Bf3 17.Bf3 e4 18.Be4 Nfe4 19.Ne4 Ne4 20.Qe4; 15.Rfc1 Rfd8 16.Rc2 Rd7 17.Rac1 Rad8 18.a3 Be7 19.Nb1 Bf3 20.Bf3; 15.a3 Nb3 16.Rad1 Rfc8 17.Rd3 Nc5 18.Rd2 Be7 19.Qh3 Nb3 20.Rc2) 15...Rfd8 16.Rac1 Rac8 17.Bc4 Rd7 18.Nd5 Nd5 19.Bd5 Bd5 20.Rd5.

14.Qh4 Qe7 15.Rfd1 (15.Nd4 a6 16.Rfd1 Rfd8 17.a4 ab5 18.ab5 Ra1 19.Ra1 Qd7 20.Bc4; 15.Rac1 a6 16.Rfd1 Rfd8 17.a3 Nd5 18.Qe7 Be7 19.ba6 Na6 20.Nd5; 15.Rfc1 Rfd8 16.Rc2 e5 17.Rd1 a6 18.ba6 Ba6 19.Ba6 Ra6 20.Rcd2; 15.Nd2 Rfd8 16.Rfd1 Nd5 17.Qe7 Be7 18.Nc4 Nb4 19.Ba3 Nc2 20.Bc5; 15.Rab1 a6 16.Nd4 ab5 17.Bb5 Rfc8 18.Rfc1 Nfe4 19.Qe7 Be7 20.Ra1) 15...Rfd8 16.Rac1 a6 17.a3 Nd5 18.Qe7 Be7 19.ba6 Na6 20.Nd5.

14.Qh4 Be7 15.Rfd1 (15.Rac1 a6 16.Rfd1 Rfd8 17.Qh3 Rd1 18.Rd1 Rd8 19.Rd8 Qd8 20.Nd4; 15.Na4 Ne8 16.Qg4 f5 17.Qb4 Ne4 18.Qe1 Bd6 19.Rc1 Qe7 20.Bc4; 15.Rfc1 Rfd8 16.Rc2 a6 17.Rac1 ab5 18.Nb5 Qd7 19.Ne5 Qe8 20.Bd4; 15.Qh3 Rfd8 16.Rfd1 Rd1 17.Rd1 Bd6 18.Qh4 Rd8 19.Nd4 Be7 20.a3; 15.Rad1 a6 16.ba6 Ba6 17.Ba6 Ra6 18.Qh3 Qb7 19.Qg3 b5 20.a3) 15...Rfd8 16.Rac1 Rd1 17.Nd1 a6 18.Nc3 ab5 19.Nb5 Qc6 20.a3.

10.Nbd2 a5

11.Rc1 Qc7 12.h3 (12.dc5 bc5 (worse is 12...Qc5 13.cd5 Qd5 14.e4 Ne4 15.Ne4 Qe4 16.Rc4+/–) 13.cd5 ed5=) 12...Ne4 (12...Rfd8 13.dc5 Nc5 14.Bf6 gf6 15.Nd4=) 13.Ne4 (13.cd5 Bd5 14.Ne4 Be4+=) 13...de4 14.Nd2 cd4 15.Bd4 (15.ed4 Rad8=) 15...e5+= 16.Bb2 Nc5 17.a4 (17.Qc2 a4+=) 17...Nd3 (17...f5 18.Qc2+=) 18.Bd3 (18.Bd3 ed3 19.Nb3+=). Brzoza,Miroslaw – Biskupski,E, corr Poland, 1981.

11.Rc1 cd4 12.Nd4 Rc8 13.cd5 Nd5 14.Rc8 Qc8 15.Nc4 =.

11.cd5 ed5 12.dc5 Nc5 13.Nd4 Qd7 14.Nc6 Bc6 15.bc6 Qc6 16.Bf6 gf6 17.Nb3 Kh8 18.Rc1 Rg8 19.g3 Rad8 20.Bf3 Attacking the isolated pawn on d5 20...Rg5 21.Nd4 Qd7 22.Bg2 Rgg8 23.Rb1 Bc7 24.Qe2 Ne4 25.Rfc1 Rc8 26.Qh5 Rg5 27.Qh3 f5 28.f4 Rgg8 29.Be4 de4 30.Qf5 (30.Nf5?! Qe6=) 30...Qf5 31.Nf5 Bb8 32.Rc8 Rc8 33.Rb6 Rc1 34.Kf2 Bc7 35.Rf6 Rc2 36.Ke1 Kg8 37.Kd1 Rc3 38.g4 Kf8 39.Rh6 Ke8 40.h4 Ra3 41.h5 Ra2 42.Rh7 a4 43.Rh8 Kd7 44.Ra8 1–0. Nemec,Zdenek (2055) – Wicklund_Hansen,Gunnar (1835), SB–2010–0–00111, 2010.

11.cd5 Bd5 12.Nc4= Bc7 (12...Ne4 13.Nfd2 Nd2 14.Qd2=) 13.Qc2 Ne4 14.Rad1 Rc8 (14...f5 15.Nfd2=) 15.Nce5 (15.Nfe5 cd4 16.Nd7 Qd7 17.Rd4 f5+=) 15...Ne5 (15...Bd6 16.Nc6 Qe8 17.Bc4+=) 16.de5+= Qe8 17.a4 f5 18.ef6 Nf6 19.Ng5 Qg6 20.Qg6 hg6 21.Rfe1 Rfd8 22.f3 Nh7 (22...Bb8 23.Bc3+=) 23.Nh7+= Kh7 24.Rd3 Bb7 25.e4 Rd3 26.Bd3 Rd8 27.Rd1 g5 28.h3 Bg3 29.Bc2 Rd1 30.Bd1 Kg6 31.Bb3 e5 32.Be6 Kf6 33.Bd7 Be1 ½–½. pman3660 (2245) – cachisss (1930), gameknot.com, 2015.

11.Ne5 Qc7 12.f4 Rfd8 13.Rc1 Rac8 14.Qe1 Ne4 15.Ne4 de4 16.Qh4 f6 17.Ng4 cd4 18.ed4 f5 19.Ne5 (19.Ne3 Nf8 20.Bh5 Nd7+=) 19...Ne5+= 20.fe5 Be5 21.de5 Rd2 22.Ba3 Re2 23.Bd6?? (better is 23.Rf2 Rf2 24.Qf2+=) 23...e3–+ 24.Rfe1 Rg2 25.Kf1 Rf2 26.Kg1 Qf7 (26...Qd8!? 27.Qd8 Rd8 28.Re3 Ra2 29.h3–+) 27.Re3 Rg2 28.Kf1 f4 29.Re2 Qg6 30.Qf4 Rg4 (better is 30...Bf3! 31.Qf3 Rg1 32.Kf2 Rc1 33.Re1 R1c4 34.h3 Rc2 35.Kf1–+) 31.Qf2 Qg5 (31...Rgc4?! 32.Rc4 Qb1 33.Qe1 Qe1 34.Ke1 Rc4 35.Rf2=) 32.Qe3 Rg1! 33.Qg1 Qc1 34.Kf2 Qf4 35.Ke1 Rc4 36.Qe3 Rc1 37.Kd2 Qf1 38.Re1 Re1 39.Qe1 Qb5 40.Qf2 Qb2 41.Ke3 Qc3 42.Kf4 h6 43.h4 b5 44.a3 (44.Bc5 Qd3 45.Bd6 Bd5–+) 44...b4 45.ab4 ab4 46.h5 (46.Bc5 b3 47.Bd4 Qc1 48.Kg3 Qc4–+) 46...b3 47.Ba3 Qh3 48.Qe2 Qf5 49.Kg3 Qg5 50.Kh3 Qf4 51.Qb5 Qf3 (51...Qf3 52.Kh4 Qf2 53.Kh3 Bg2 54.Kg4 Qf3 55.Kh4 Qf4 mate; 51...Qe3 52.Kh2 Qf2 53.Kh3 Bg2 54.Kg4 Qf3 55.Kh4 Qf4 mate) 0–1. Gunawan,Ro (2420) – Pamungkas,J (2180), Telin International Open, 2011.

11.g3 Qc7 12.Rc1 Rfe8 13.cd5 ed5 14.dc5 Nc5 15.Bf6 gf6 16.Nd4 Bc8 17.Bf3 Re5 18.Qc2 Bd7 19.a4 Kh8 20.e4 de4 21.Ne4 Re4 22.Be4 h6 23.Ba8 1–0. barborski – 3mjack (1710), internet, 2014.

11.Rc1 Rc8

12.Qc2 Qc7 13.h3 (13.cd5 ed5 (worse is 13...Bd5 14.e4+/– Ba2 15.Qa4 Bd5 16.ed5 ed5 17.dc5 Nc5 18.Qh4 Qd8; 13...Nd5 14.Rfd1 Nb4 15.Qa4 e5 16.a3 Nd5 17.Ne4 ed4 18.Rd4 N7f6) 14.dc5 bc5= (worse is 14...Nc5 15.Bf6 gf6 16.Qf5+/– Qd8 17.Nd4 Rc7 18.Nc6 Qd7; 14...Qc5 15.Qc5 Nc5 16.Be5 Be5 17.Ne5 Rfe8 18.Ndf3 g6) 15.h3 Rfe8 16.Rfe1 h6 17.Bc3 Qb6 18.a4 g6; 13.g3 cd4 (13...Qd8 14.Ne5 Qe7 15.Bf3 Rfd8 16.Qd3 h6 17.Qe2 a4 18.cd5 a3; 13...Qb8 14.dc5 Bc5 15.Qb1 Rfd8 16.Rfd1 Qa8 17.cd5 Bd5 18.Nd4 h6) 14.ed4 h6 15.Qa4 Qb8 16.c5 bc5 17.dc5 Bc5 18.Nb3 Bd6) 13...Ne4 (13...cd4 14.ed4 (14.Bd4 e5 15.Bc3 h6 16.Rfd1 e4 17.Nh4 Bh2 18.Kh1 Be5) 14...dc4 (14...Ne4 15.Ne4 de4 16.Ng5 Nf6 17.f3 ef3 18.Nf3 Bf4) 15.Qd1= (15.Qa4 Qb8 16.Rc4 Nd5 17.Rc6 Bf4 18.Rfc1 Bc6) 15...Bb4 16.a3 Bd2 17.Nd2 c3 18.Rc3 Qf4) 14.cd5 ed5 (14...Nd2 15.Nd2 (15.Qd2 Bd5 16.Bc4 Bf3 17.gf3 Rfd8 18.Bd3 Nf6) 15...Bd5 16.e4= Bb7 17.Rfd1 Bh2 18.Kh1 cd4) 15.dc5 (15.Ne4 de4 16.Nd2 cd4+= 17.Qc7 Bc7 18.Bd4 Be5) 15...Ndc5= 16.Rfd1 (16.Nd4 g6 17.Ne4 de4 18.Nb3 Qe7) 16...Qe7 (16...f5 17.Bd4= Qf7 18.Qb2 Qe7) 17.Qb1 (17.Ne4 de4 18.Nd4 Qe5=) 17...f5 (17...Na4 18.Ne4 de4 19.Nd2 Nb2 20.Rc8 Nd1 21.Rf8 Kf8 22.Qd1+=) 18.Bf1 (18.Bd4 f4+=) 18...Rce8 (better is 18...Na4 19.Rc8 Bc8+=; 18...f4–/+) 19.Ne4? (better is 19.Bd4= is a viable option) 19...fe4–+ (19...de4?! 20.Nd2+=; 19...Ne4?! 20.Bd4=; 19...Qe4?! 20.Qe4 Re4 21.Nd2+=) 20.Ne1? (better is 20.Nh2 Rf2! Decoy: f3 21.Kf2 Bh2 22.Ke1–+) 20...Rf2! 21.Kf2 Qh4 22.Ke2 Rf8 23.Nf3 Qg3 24.Kd2 ef3 25.gf3 Qf2 26.Be2 d4 27.Bd4 Bf3 28.Re1 Bh5 29.Qb2?? Ne4 30.Kd1?? Be2 31.Qe2+/= Qf5 32.Qc4 Kh8 33.Rg1 Nf2 34.Kd2?? Bb4–+ 35.Rc3??Bc3 36.Kc3 Ne4 37.Kb2 Qf2 38.Qc2 Qg1 39.Qe4 Rf2 40.Kb3 Qd1 41.Ka3 Qc1 42.Kb3 a4! 43.Kb4 Qd2 44.Bc3 Qd6 45.Ka4 Ra2 46.Kb3 Qa3 47.Kc4 Qa4 48.Bb4 Rc2 49.Kd5 Qb5 50.Ke6 Rc8 51.Qf4 Rd8 52.Qf8 Rf8 53.Bf8 Qd3 54.Bd6 Qe3 55.Kd5 b5 56.h4 Qd2 57.Ke5 Qe2 58.Kf5 b4 59.Be5 b3 60.Kf4 b2 61.Bb2 Qb2 62.Kg3 Qc3 63.Kf2 h5 64.Ke2 Kg8 65.Kf2 Qd3 66.Kg1 Qd2 67.Kh1 g5 68.hg5 h4 69.Kg1 h3 70.Kf1 h2 71.g6 h1Q# 0–1. Rehberg,Norbert – Hess,Ralf, Hessen–ch M Stadtallendorf, 1975.

12.Qc2 cd4 A) 13.Bd4 Qe7 (13...e5 14.Bc3 Qe7 15.cd5 Bd5 16.e4 Bb7 17.Bd3 Nc5 18.Nc4 Be4; 13...Re8 14.Rfd1 e5 15.Bc3 Ba3 16.Bb2 Qe7 17.h3 Bd6 18.Bc3 d4) 14.h3 e5 15.Bc3 Ne4 16.Ne4 de4 17.Nd2 f5 18.Rfd1 Rfd8; B) 13.ed4 Ne4 (13...Bb4 14.Qd3 Qe7 15.a3 Bd6 16.Ne5 Rfd8 17.cd5 Be5 18.de5 Nd5; 13...dc4 14.Nc4 Ne4 15.g3 Bb4 16.Bd3 Nd6 17.Qe2 Nc4 18.Rc4 Rc4; 13...Qe7 14.Ne5 Bb4 15.f4 dc4 16.Ndc4 Nd5 17.Qb3 Ne5 18.fe5 Qd7) 14.g3 Ndf6 15.Ne5 Nd2 16.Qd2 dc4 17.Nc4 Bb4 18.Qe3 Bd5; C) 13.Nd4 g6 (13...Qe7 14.Qd1 Nc5 15.cd5 Nd5 16.Nc4 Rfd8 17.Bf3 Qc7 18.Nd6 Rd6; 13...h5 14.N4f3 Qe7 15.Rfd1 g6 16.Qb1 Rfd8 17.cd5 Rc1 18.Rc1 Bd5) 14.f4 Qe7 15.Bf3 e5 16.Nc6 Bc6 17.bc6 Rc6 18.Qa4 Rc5.

12.Qc2 Re8 13.Ne5 (13.dc5 Nc5 14.Ne5 Nfe4 15.Ne4 de4 16.f4 f6 17.Ng4 Qc7 18.Rfd1 h5) 13...cd4 (13...Qe7 14.f4 cd4 15.Bd4 Ba3 16.Rcd1 Bc5 17.Ndf3 Ne5 18.Ne5 dc4; 13...h6 14.f4 Qe7 15.Bf3 Red8 16.Bc3 cd4 17.ed4 Ba3 18.Rcd1 Bb4; 13...h5 14.f4 Qe7 15.Bf3 h4 16.Qa4 cd4 17.ed4 h3 18.Nc6 Qf8) 14.ed4 Bb4 15.f4 dc4 16.Ndc4 Bd5 17.Qd3 g6 18.Qh3 Ne5.

12.Qc2 h6 A) 13.Ne5 cd4 (13...Re8 14.f4 Rc7 15.Qd3 Qe7 16.Ba3 Rec8 17.Bf3 Rd8 18.Rf2 Rdc8; 13...Qe7 14.g3 cd4 15.ed4 Bb4 16.Bf3 Ne5 17.de5 Nh7 18.h4 Rfd8) 14.ed4 Bb4 15.f4 Ne5 16.fe5 Ne4 17.Ne4 de4 18.Rf4 Qg5; B) 13.Qd3 cd4 (13...Ne4 14.Ne5 Ne5 15.de5 Nd2 16.Qd2 Be7 17.Bf3 Qd7 18.Rcd1 Rcd8) 14.ed4 Ne4 15.cd5 Nd2 16.Nd2 Qg5 17.g3 Rc1 18.Bc1 ed5; C) 13.dc5 Nc5 14.Ne5 Qc7 15.f4 Rfd8 16.Bd4 Nfd7 17.Nd7 Qd7 18.cd5 ed5; D) 13.g3 cd4 (13...Re8 14.Ne5 Qc7 15.f4 cd4 16.ed4 Bb4 17.Bc3 Ba3 18.Bb2 Bb4; 13...Qe7 14.Ne5 Rc7 15.Bf3 cd4 16.ed4 Bb4 17.Qd3 Rd8 18.Nc6 Bc6; 13...Rc7 14.Ne5 cd4 15.ed4 Bb4 16.Rfd1 Ne5 17.de5 Nd7 18.Qd3 Be7) 14.ed4 Bb4 15.Qb3 Ne4 16.Qe3 Re8 17.Rc2 Nd6 18.Rfc1 Nf5.

12.Ne5 A) 12...h6 A1) 13.Bf3 Rc7 (13...cd4 14.ed4 Rc7 15.g3 Bb4 16.Nd3 Bd2 17.Qd2 Ne4 18.Qe3 Rc4; 13...Be7 14.Nd7 Nd7 15.cd5 ed5 16.Nc4 Re8 17.g3 Rc7 18.Ne5 c4; 13...Qe7 14.Nd7 Nd7 15.cd5 ed5 16.Nc4 Bb8 17.dc5 Rc5 18.Ba3 Qf6) 14.h3 cd4 15.ed4 Qe7 16.cd5 Rc1 17.Qc1 Nd5 18.Nc6 Qh4; A2) 13.cd5 ed5 14.Nd7 Nd7 15.dc5 Nc5 16.Nb3 Ne6 17.Rc8 Qc8 18.Qd3 Qb8; A3) 13.Nd7 Nd7 (13...Qd7 14.dc5 Bc5 15.Bf6 gf6 16.cd5 Bd5 17.Ne4 Qe7 18.Nc5 Rc5) 14.cd5 Bd5 15.Nc4 Qc7 16.g3 Be7 17.Bd3 Qb7 18.Re1 Bf3; A4) 13.f4 cd4 (13...Qe7 14.Qa4 cd4 15.ed4 Bb4 16.Bc3 Ne5 17.fe5 Ne4 18.Bb4 ab4; 13...Be7 14.Bd3 cd4 15.ed4 Bb4 16.a3 Bd6 17.Qe1 Qe7 18.Qg3 Rc7) 14.Bd4 Bc5 15.Ndf3 Ne4 16.Nd7 Qd7 17.Ne5 Qd6 18.cd5 Bd5; B) 12...Re8 B1) 13.Bd3 cd4 14.ed4 Bb4 15.Nef3 Ne4 16.Qe2 Nd2 17.Nd2 h6 18.f4 Nf6; B2) 13.Qb3 cd4 (13...h5 14.f4 h4 15.Bf3 Qc7 16.Qd3 Be7 17.cd5 Bd5 18.e4 Bb7; 13...h6 14.f4 Qe7 15.Bf3 Red8 16.Qc2 Rc7 17.Bc3 Rdc8 18.Rf2 Kh8) 14.ed4 Bb4 15.Ndf3 Ne5 16.de5 Ne4 17.Qe3 Qe7 18.Rfd1 Bc5; B3) 13.cd5 ed5 14.f4 h6 15.Qa4 Qe7 16.dc5 Rc5 17.Ndf3 Rcc8 18.Rfd1 Ne5; B4) 13.f4 cd4 (13...Qe7 14.Qc2 h5 15.cd5 ed5 16.Qf5 Qe6 17.Qg5 Ng4 18.Rc3 Ngf6; 13...Rc7 14.Qb3 h6 15.Bf3 Qe7 16.Qd3 Rec8 17.Ba3 cd4 18.Bd6 Qd6) 14.ed4 Ne4 15.cd5 Rc1 16.Qc1 Nd2 17.Qd2 Bd5 18.a4 Ne5; C) 12...cd4 13.ed4 Be7= (13...h6 14.Bf3 Rc7 15.g3 Bb4 16.Nd3 Bd2 17.Qd2 Ne4 18.Qe3 Rc4; 13...Bb4 14.f4 h6 15.a3 Bd6 16.Bd3 Re8 17.Qe2 Qe7 18.Qf3 dc4; 13...h5 14.f4 h4 15.cd5 Rc1 16.Qc1 Nd5 17.Ne4 Ne5 18.de5 Bb4; 13...Qe7 14.Bf3 Rc7 15.Re1 Rfc8 16.g3 Bb4 17.Nc6 Qd6 18.Nb4 Qb4; 13...Re8 14.Bf3 Rc7 15.Qe2 h6 16.g3 Qe7 17.Rfe1 Bb4 18.cd5 Ne5) 14.Bf3 Ne5 15.de5 Ne4 16.cd5 ed5 17.Bg4 Rc1 18.Qc1 Bc5.

12.g3 A) 12...cd4 A1) 13.ed4 Ne4 (13...h6 14.Bd3 Ne4 15.Re1 Ndf6 16.cd5 ed5 17.Qe2 Nd2 18.Nd2 Rc1; 13...Bb4 14.Qb3 Qe7 15.Rfd1 Rfd8 16.Qe3 h5 17.h3 dc4 18.Nc4 Nd5; 13...Qe7 14.Ne5 Ba3 15.Ba3 Qa3 16.Nd7 Nd7 17.Qb3 Qb3 18.ab3 dc4; 13...Rc7 14.Bd3 Qe7 15.Qe2 h6 16.Ne5 Rfc8 17.cd5 ed5 18.Rc7 Rc7) 14.cd5 Nd2 15.Qd2 Bd5 16.Rc8 Qc8 17.Rc1 Qb8 18.Qc2 h6; A2) 13.Nd4 Ne5 14.cd5 Bd5 15.Rc8 Qc8 16.f4 Ng6 17.Bd3 Rd8 18.Qe2 e5; B) 12...Qe7 B1) 13.cd5 ed5 (13...Bd5 14.Nc4 Bc7 15.Qa4 Ne4 16.Rfd1 Rfd8 17.Qc2 h6 18.a4 h5) 14.dc5 Nc5 15.Nd4 Qd7 16.Nc6 Rfe8 17.Bf6 gf6 18.Nf3 Be5; B2) 13.Ne5 Rc7 (13...h6 14.Bf3 Rc7 15.Re1 Rfc8 16.Qc2 cd4 17.ed4 Bb4 18.Bc3 Ne5; 13...Rfd8 14.Bf3 Rc7 15.Re1 Rdc8 16.Nc6 Bc6 17.bc6 Rc6 18.e4 de4; 13...g6 14.Bf3 Rc7 15.Nd7 Nd7 16.cd5 ed5 17.dc5 Nc5 18.Nb3 Na4; 13...cd4 14.ed4 Ba3 15.Ba3 Qa3 16.Nd7 Nd7 17.Qb3 Qb3 18.ab3 dc4) 14.Bf3 h6 15.Qc2 cd4 16.ed4 Bb4 17.c5 bc5 18.a3 Bd2; C) 12...Re8 C1) 13.Bd3 cd4 (13...Ne4 14.Re1 h6 15.Qc2 Ndf6 16.dc5 Nc5 17.Ne5 Qc7 18.f4 Red8; 13...Qe7 14.Ne5 Red8 15.cd5 Bd5 16.e4 Bb7 17.Nc6 Bc6 18.bc6 Rc6; 13...h6 14.cd5 ed5 15.dc5 Nc5 16.Bf5 Rc7 17.Nb3 g6 18.Nc5 Rc5) 14.ed4 e5 15.de5 Ne5 16.Bf5 Rc7 17.Re1 Nf3 18.Qf3 dc4; C2) 13.Re1 e5 (13...cd4 14.Nd4 Ne5 15.cd5 Bd5 16.f4 Rc1 17.Bc1 Ned7 18.Nc4 Bc5) 14.cd5 ed4 15.Nc4 Qc7 16.Qd3 Bd5 17.ed4 h6 18.Nfd2 cd4; C3) 13.cd5 ed5 14.dc5 Nc5 15.Nb3 Nce4 16.Qd4 h6 17.Rc8 Bc8 18.Rc1 Bd7; C4) 13.Ne5 cd4 (13...h6 14.Bf3 Rc7 15.Re1 Qe7 16.Nd7 Qd7 17.dc5 Bc5 18.Bf6 gf6; 13...Qe7 14.Bf3 Rc7 15.Nd7 Nd7 16.Re1 cd4 17.ed4 Qg5 18.h4 Qf5; 13...Qc7 14.Nd3 e5 15.dc5 Nc5 16.cd5 Bd5 17.Nb3 Qe7 18.Ndc5 Bc5; 13...Rc7 14.Bf3 Qe7 15.Nd7 Nd7 16.cd5 ed5 17.dc5 Rc5 18.Rc5 Nc5) 14.ed4 Bb4 15.a3 Bd6 16.Re1 Qe7 17.Nc6 Bc6 18.bc6 Rc6.

10.Nbd2 Qc7

11.Rc1 a6 12.dc5 bc5 =.

11.Rc1 a6 12.cd5 ab5 13.e4 =.

11.Rc1 a6 12.cd5 Nd5 13.ba6 Ba6 =.

11.Rc1 Rac8 12.h3 Qb8 (12...Rfd8 13.Qa4=) 13.a4 (13.dc5 bc5 14.cd5 ed5=) 13...Rfd8 14.Re1 (14.dc5 Bc5 15.cd5 Bd5=) 14...cd4=+ 15.ed4 dc4 16.Bc4 (16.Nc4 Bf4 17.Rc2 Nd5=+) 16...Bd5 (16...Bf4 17.Rc2–/+) 17.Qe2 Bf4 (17...Nh5 18.Bd5 Nf4 19.Qe3 Nd5 20.Qg5=+) 18.Bd5= Nd5 19.g3 (19.Ne5 Rc1 20.Bc1 Ne5 21.de5 Nc3–/+) 19...Bh6 (19...Bd6 20.Ne5 Be5 21.de5=) 20.Rc8 (20.Ne5 Bd2 21.Qd2 Ne5 22.de5 Rc7=) 20...Rc8=+ 21.Nc4 Qc7 22.Nfe5 Ne5 23.Ne5 g6 24.f4 (24.Qf3 Bd2 25.Rd1 Bg5=+) 24...Qb7 (24...Qd6 25.Nc6=+) 25.Nc6 Rc6 26.bc6= Qc6 27.Qa6 Qc2 28.Re2 Qb3 29.Kh2 Bf8 30.Bc1 Qc3 31.Bb2 Qb3 32.a5 Ne3 33.ab6= ab6 34.Qa1 Nd5 35.Qc1 b5 36.Rc2 Bb4 37.Rc8 Kg7 38.Qc2 Qf3 39.Qg2= Qd3 40.Qf2 Bd2 41.Bc1 Bc3 42.Bb2 ½–½. Diener,Rudolf – Weissleder,WM, corr ICCF EU–M–630, (year?).

11.Rc1 Ne4 12.h3 f5 (12...Rac8 13.Ne4 de4 14.Nd2=) 13.Qb3 Rae8 (13...Be7 14.Ba1=) 14.a4 (14.cd5 ed5 15.Ba3 Re7=) 14...Kh8 (14...Rf6 15.Ne4 de4 16.Ne1=) 15.Ne4 (15.Qd1 Ba8=) 15...fe4 Black has new doubled pawns: e4+e6 16.Nd2 Re7 17.Bg4 Nf6 (17...Ref7 18.Be6 Bh2 19.Kh1 Rf2 20.Rf2 Rf2 21.Rf1 Rd2 22.Bd7+=) 18.Qd1 Ng4 19.Qg4 Black has the pair of bishops (19.hg4 Ref7 20.g5 Rf5 21.dc5 bc5 22.cd5 ed5–/+) 19...Bc8 20.Qe2 Ref7 21.f4 (21.dc5 Bc5 (worse is 21...Qc5 22.cd5 Qd5 23.Nc4+–) 22.Nb3 Qe7 23.Nc5 Qc5+/–) 21...Qe7 (21...ef3 22.Rf3 Qd8 23.Rf7 Rf7 24.dc5 bc5 25.Qh5=) 22.Qe1 (22.dc5 bc5 23.Rcd1 Bb7+=) 22...Bb7 23.Qg3 (23.dc5 bc5 24.g3 Kg8=) 23...Rf5 (23...cd4 24.Bd4 Ba3 25.Ra1=) 24.Kh1 (24.Nb3 Rd8+=) 24...h6 (24...cd4 25.Bd4 Bc5 26.Bb2+=) 25.Qh2 (25.Nb3!?+/–) 25...Kh7 26.g4 R5f7 27.Qg2 g5 (27...cd4 28.Bd4 e5 29.Be5 Be5 30.fe5+=) 28.cd5 Bd5 29.fg5 Qg5 30.Rf7 Rf7 31.Rf1 Qe7 32.Kg1 Qf8 33.Rf7 Qf7= 34.g5 hg5 35.Qg5 Qg6 36.Qg2 cd4–/+ 37.Bd4 Qg2 38.Kg2 Bb4 39.Nf1 Bb3 40.Ng3 Ba4 41.Ne4 Kg6 42.Kg3 Bb5 43.Kf4 Bc4 44.h4 Be7 45.Kg3 Bd5 46.Nc3 Bf6 47.Ne2? Bd4–+ 48.ed4 b5 49.Kg4?? a5 50.Nc3 b4 51.Na4 b3 52.h5 Kh6 53.Kf4 Bc6 54.Nb2?? a4 55.Ke3 a3 56.Kd2 a2 (56...a2 57.Kc3 Bd5 58.Nd3 a1Q 59.Nb2 Qc1 60.Kb4 Qb2 61.Kc5 Qc1 62.Kd6 Qc6 63.Ke7 Qc7 64.Kf8 Qd8 65.Kf7 e5) 0–1. Springer,Heinrich Victor (1790) – Lohmar,Joerg (1950), Berlin Eckbauer op 4th, 2001.

11.Rc1 Rfe8 12.h3 a6 13.dc5 bc5 14.cd5 ed5 15.Nd4 =+.

11.Rc1 Rfe8 12.h3 Rad8 13.cd5= ed5 14.Qa4 c4 =.

11.Rc1 Rfe8 12.h3 Rad8 13.cd5= ed5 14.Qb3 Qb8 15.a4 c4 (15...Rc8 16.dc5 bc5 17.Rfd1=) 16.Qc3 Qc7 17.Ba3 Ba3 18.Qa3 a6 19.Nc4 (19.ba6!? Ba6 20.Qb4=) 19...dc4=+ 20.Bc4 Nb8 (better is 20...Qb8!? 21.Qb3 Bf3 22.gf3 Rf8=+) 21.Ng5+= Qe7 22.Bf7 Kh8 23.Qe7 Re7 24.Bc4 (24.ba6 Ba6 25.Bc4 Bc4 26.Rc4 Kg8+=) 24...Bd5 (24...ab5 25.ab5 Bd5 26.Bd5 Nd5 27.Rc2+=) 25.ba6+/– Bc4 26.Rc4 Na6 27.Rb1 Rb8 (27...Nd7 28.d5 Ndc5 29.Rb6+/–) 28.Rc6 Nd5 29.e4 Ndb4 30.Rc4 (30.Rd6 Rc7+/–) 30...h6 31.Nf3 (31.Rcb4?! Nb4 32.Rb4 hg5=) 31...Re4 32.Rcb4 (32.Rbb4 Nb4 33.Rb4 Ra8+/–) 32...Nb4 33.Rb4 Kg8 34.Rb5 (34.Ne5 Rd8 35.Nc6 Rd6 36.Rb6 Ree6 37.Rb8 Kh7+=) 34...Ra8+= 35.Rb6 Ra4 36.Rb2 Ra1 37.Kh2 Rd1 (37...Kf7 38.Rb7 Kf6 39.Rb6 Re6 40.Rb8+=) 38.Rb8 (38.Rb3 Kf7+=) 38...Kh7 39.Rb2 (39.Kg3 Rd3 40.Rd8 Kg6+=) 39...Kg8 40.g3 (40.Rb3 Kf7+=) 40...Rd3 (40...Kf7 41.g4+=) 41.Kg2 (41.Rb8 Kh7 42.Kg2 Re6+=) 41...Re8 42.Rd2 Rd2 43.Nd2 Rd8 44.Nb3 (44.Nf3 Kf7=) 44...Rb8 (44...Rc8 45.Na5=) 45.Nc1 (45...g5 46.Ne2=; 45.Na5 Kf7 46.Kf3 Ke6=+). Wolf – Abraham, corr DDR, 1976.

11.Qc2 Rac8 12.cd5= ed5 13.dc5 bc5 14.Qf5 Rfe8 15.h4 (15.Rfc1!?=) 15...d4–/+ 16.h5 (16.Qd3 Nb6 17.Rad1 Qe7–/+) 16...h6 (16...de3 17.fe3 Re3 18.Bc4–/+) 17.Rac1 (17.Bd3 Ne5 18.ed4 Nd3 19.Qd3 c4–/+) 17...de3 18.fe3 Re3 19.Bd3 Ne5 20.Ne5 Be5 (< 20...Re5 21.Be5 Be5 22.Kh1+=) 21.Nc4 Rg3 (21...Bb2 22.Ne3 Bc1 23.Rc1 Qg3–+) 22.Be5–/+ Rg2 23.Kh1 Rf2 24.Be4?? (better is 24.Kg1 Rf5 25.Bf5–/+) 24...Ne4 (better is 24...Rf5 25.Bc7 Be4 26.Kg1 Rg5 27.Bg3 Rg3 28.Kf2 Rh3–+) 25.Rf2+/– Nf2 26.Kg1 Qe7 27.Kf2 Qh4 28.Ke3 (better is 28.Bg3!? Qd4 29.Kf1+–) 28...Re8+= 29.Nd6?? (better is 29.Kd2 Rd8 30.Kc3+=) 29…Qd4–+ (30.Ke2 Re5 (30...Qe5?! 31.Qe5 Re5 32.Kf2–+) 31.Kf1 Rf5 32.Nf5 Qf4 33.Ke2 Qc1 34.Ne7 Kh7–+) 0–1. Walzer,Heinz (1900) – Huss,Rolf (2095), Karl Mala mem op, 2004.

11.Qc2 Rac8 12.cd5= Bd5 13.e4 Ne4 14.Ne4 cd4 15.Qb1 +/–.

11.Qc2 Rac8 12.cd5= Nd5?! 13.Rfc1 =.

11.Qc2 cd4 12.ed4 Rfc8 13.Rfc1 =+.

11.Qc2 Rfe8 12.Rfd1 (12.dc5 bc5 13.Bd3 d4=) 12...Rac8 (12...cd4 13.ed4 a6 14.Rdc1+=) 13.a4 (13.dc5!? bc5 14.Bd3=) 13...cd4+= 14.ed4 e5 15.de5 Ne5 16.Ne5 Be5 17.Be5 Qe5 18.Bf3 Ne4 19.Be4 de4 20.Ra3 Qc5 21.Rg3 (21.Re3!? f5 22.Rde1+=) 21...e3–/+ 22.Re3 Re3 23.fe3 Qe3 24.Kf1 Re8 25.Nb1 Be4 26.Qd2 Qc5 27.Nc3 Qc4 28.Kg1 Qc5 29.Kf1 Bf5 30.Qd4 Qe7 31.Qf2 Bg6 32.Qd4 Bc2 33.Rc1 h6 34.h3 Bb3 35.Rb1 Rd8 36.Qf2 Qb4 37.Qe1 (37.Qe3 Qc4 38.Kg1 Ba4–+) 37...Qd4 38.g3 Be6 (38...Be6 39.Kg2 Qd2 40.Kh1 Bh3 41.Qd2 Rd2–+) 0–1. Levin,Anatoly Borisovich – Kunakov,VZ, RUS–ch5 qf2 corr, 2002. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 e6 4.b5 Bd6 5.e3 c5 6.c4 0–0 7.Be2 Nbd7 8.d4 b6 9.Nbd2 Qc7 10.0–0 Bb7)

11.dc5 bc5 12.Qc2 Rac8 13.Rfd1 Ng4 14.h3 Nge5 =.

11.dc5 bc5 12.Qc2 Rac8 13.h3 Rfd8 14.Rfd1 Ne5 15.a4 (15.cd5 Bd5 16.Be5 Be5=) 15...Nf3 (15...dc4 16.Ne5 Be5 17.Rac1=) 16.Bf3 Bh2 17.Kh1 Be5 18.Be5 Qe5 19.a5 h6 (19...Qg5 20.Nb3=) 20.Rab1 Qc7 21.Ra1 (21.b6 ab6 22.cd5 b5 (22...ba5? 23.d6 Rd6 24.Rb7+–) 23.Rb5 Bd5=) 21...Ba8 (21...d4 22.b6 ab6 23.ab6=) 22.Re1 (22.cd5 Bd5 23.e4 Ba8=) 22...d4 23.ed4 (23.Qd3 Rd7=) 23...cd4 24.Ba8 Ra8 25.c5 (25.Qd3 e5=) 25...Rac8 (25...d3 26.Qc4=) 26.Nb3 d3 27.Qc4 e5 28.f3 Nh5 29.Re3 Ng3 30.Kg1 Ne2 31.Kf2 Nd4 32.Rd3+= Nb3 33.Rb3 Rd4 34.Qc3+/– Qd8 35.Kg3 e4 36.fe4+/– Re4 37.b6 Re2 38.Kh2 Re8? 39.Rc1+– Rc6 40.Rc2 Qb8 41.Qg3 ab6 42.Qb8 Rb8 43.Rb6 Rbc8 44.a6 (44...R6c7 45.c6+–) 1–0. Mus,Roman – Buczinski,Henryk, corr 2. AMM, Poland, 1994.

11.dc5 bc5 12.Qc2 Rfe8 =.

11.dc5 bc5 12.cd5 ed5 =.

11.g3 Ne4 12.cd5 ed5 13.Ne4 de4 =.

11.g3 Ne4 12.Nh4 Be7 13.Rc1!? =+.

11.g3 Ne4 12.Nh4 Be7 13.Bf3 Bh4 14.Be4 de4 15.gh4 f5 (15...cd4 16.ed4 Qf4 17.Qe2–/+) 16.f4 ef3 17.Nf3 Rf6 18.Rf2 (18.d5 Rg6 19.Kh1 ed5 20.cd5–/+) 18...Rg6–+ 19.Rg2 Rg2 20.Kg2 Nf6 (20...cd4!? 21.Qd4 e5 22.Qc3–+) 21.d5 Ng4 22.Qd3 ed5 23.cd5 Rd8 24.e4 fe4 25.Qe4 Qd7 26.h3 Nh6 (26...Qb5 27.Qe6 Kh8 28.Bg7 Kg7 29.Qe7 Kh8 30.Qd8 Kg7 31.Qe7 Kg8 32.Qb7 Qb2 33.Kg3+–) 27.Qe5 (27.Rf1 Bd5 28.Qe2 Re8–+) 27...Bd5 28.Rh1 (28.Rf1 Re8 29.Qf4–+) 28...Bf3 29.Kf3 Rf8 30.Kg2 (30.Ke3 Re8 31.Re1–+) 30...Qd2 (31.Qe2 Qe2 32.Kg3 Rf3#) 0–1. Olofsson,Jonny – Ketola,Juhani, corr SSKK 2–777, 1994.

11.h3 a6 12.dc5 bc5 13.cd5 ed5 14.Qc2 =.

11.h3 a6 12.dc5 bc5 13.cd5 Bd5 14.ba6 =.

11.h3 a6 12.dc5 Bc5 13.cd5 Nd5 14.Qb3 =.

11.h3 dc4 12.Bc4 Rfd8 13.Qe2 =.

11.h3 dc4 12.Bc4 e5 13.Qb3 ed4 14.ed4 a6 =.

11.h3 dc4 12.Bc4 e5 13.dc5 Nc5 14.Rc1 a5 (14...Rfd8 15.Qe2=) 15.Nb3 (15.ba6 Ba6 16.Ba6 Ra6=) 15...Nfd7 (15...Nb3 16.Qb3 a4 17.Qd1=) 16.Nh4 g6 17.Qg4 Nf6 18.Qe2 Nb3 19.Bb3 Qe7 20.a4 e4 (20...Rfd8 21.Rfd1=) 21.Bd4 Nd7 (better is 21...Rac8!?=) 22.Qg4+/– h5?? (22...Ne5 23.Nf5 Ng4 24.Ne7 Be7+–) 23.Qg6# 1–0. Roczniak,Jan – Wolyniec,C, corr Poland, 1980.

11.h3 e5 12.de5 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Bf3 Rad8 16.Qc2 Rfe8 17.a4 Nh5 18.a5 Re7 19.ab6 ab6 20.cd5 Bd5 21.Bd5 Qd5 (worse is 21...Rd5 22.Nc4 Qc7 23.Nb6+–) 22.Nc4 Re6 (22...Qb7 23.Rfd1 Rb8 24.Rd6+/–) 23.Rad1 (better is 23.g4 Rde8 24.Rad1+/–) 23...Qg5?? (23...Qa8 24.Rd8 Qd8 25.Qd1+=) 24.Rd8 (better is 24.Qf5! Qe7 25.Qh5+–) 24...Qd8+= 25.Qd2 (25.Qd1 Qh4+=) 25...Qb8 (25...Qd2 26.Nd2 f5 27.Nc4=) 26.Qd5 (better is 26.Rd1+/–) 26...Re8?? (better is 26...Nf6 27.Qd3 Qe8=) 27.Qh5+– Rd8 28.Qf3 g6 29.Qc6 Rd3 30.g3 1–0. Ebert,Lutz (1780) – Streit,Bodo (1805), Mecklenburg VP LL2, 2006. (=1.Nf3 b6 2.b4 e6 3.Bb2 Bb7 4.e3 Nf6 5.b5 c5 6.c4 d5 7.Be2 Bd6 8.0–0 0–0 9.d4 Nbd7 10.Nbd2 Qc7)

11.g3 a6=+

12.a4 ab5 13.dc5 bc5 14.cb5 e5!? =+.

12.a4 ab5 13.dc5 bc5 14.cb5 Be5 15.Ne5+/– Ne5 16.Qc2 (16.a5 Rfb8+/–) 16...Ned7+= 17.Ba3 (17.Bc3 e5+=) 17...Rfc8= 18.Rfc1 c4 (18...e5 19.Bb2=) 19.Bb4 Qd8 (19...Qb6!?=) 20.a5+/– Ra7 21.Qb2 Rca8 22.a6 Ba6 (22...Bc8 23.e4+=) 23.ba6 Ra6 24.Bc3 Rb6 25.Qc2 Rba6 26.e4 Ra1 27.Ra1 Ra1 28.Ba1 Qa5 (28...Nc5 29.e5 Qa5 30.Bd4+/–) 29.Bf6 Nf6+/– 30.Bf3 Qa1 31.Kg2 c3 32.ed5 ed5 33.Nb3 Qb2 34.Nd4 Qc2= 35.Nc2 g5 36.Kf1 h5 37.Ke2+– g4 38.Bg2 Kf8 39.Kd3 Ke7 40.Kc3 Ke6 41.Kd4 (41…Ne4 42.Be4 de4 43.Ke4+–) 1–0. Diener,Rudolf – Gruesser, corr, (year?).

12.a4 ab5 13.dc5 Qc5 14.cb5 Rfc8 15.Nd4 =+.

12.cd5 Bd5 13.ba6 Rfc8 =.

12.cd5 Nd5 13.e4 +/–.

11.h3 Rac8

12.Qb3 Ba8 13.a4 Qb7 14.a5= cd4 15.Bd4 e5 16.Bc3 =.

12.Qb3 Ba8 13.a4 Qb7 14.a5= Ne4 15.a6 (15.Ne4 de4 16.Ne5 cd4 17.Nd7 Qd7 18.Bd4 e5=) 15...Qc7= 16.Ne4 (16.Rfd1 dc4 17.Bc4 cd4 18.Bd4 Ndc5=) 16...de4 17.Nd2 f5 (17...Rfd8 18.Rfe1=) 18.Qc3 (18.Rfd1 cd4 19.ed4 Bh2 20.Kf1 Bf4=) 18...cd4= 19.ed4 (19.Qd4?? Be5–+) 19...e5 20.Qb3 Kh8 21.de5 (21.Rfd1 ed4 22.Bd4 Bh2 23.Kh1 Be5 24.Be5 Ne5=) 21...Be5 22.Be5 Qe5 23.Rfc1 Nc5 24.Qc3 Qe6 25.Nb3 Rfd8 26.Nc5 Rc5 27.Rd1 Rdc8 28.Qd4 h6 29.Qd7 Qf6 30.Qd4?? Qg6 31.Qd6 Qg5 32.Qg3 Qf6 33.Qf4 Qb2 34.Bf1 Re8 35.Qd2 Qe5= 36.Qd4 f4 37.Qe5+= Rce5 38.Rd7 e3 39.fe3+= fe3 40.Be2 Rg5? 41.g4+– h5 42.Rad1 hg4 43.hg4 Be4 44.Rd8?? Rd8 45.Rd8 Kh7 46.Re8 Bf5 47.c5?? Bg4–/+ 48.Bg4 Rg4 49.Kf1 Rf4 50.Ke2= Rf7?? 51.c6 Rc7 52.Re3 g5 53.Rd3 Kg6? 54.Rd7 Rc8 55.Ra7 Rf8 56.Rb7 g4 57.c7 g3 58.Rb6 Kg7 59.Rb8 g2 60.Rf8 g1Q 61.c8Q Qg2 62.Kd3 Qd5 63.Kc3 Qe5 64.Kb4 Qd4 65.Ka5 Qd2 66.Kb6 Qd6 67.Kb7 Qd5 68.Qc6 Qe5 69.a7 Qe7 70.Qc7 (70…Kf8 71.Qe7 Ke7 72.b6+–) 1–0. Gutsko,Anastasiya – Paehtz,Elisabeth, EU–ch U10 Girls, 1995.

12.Qb3 Ba8 13.a4 cd4!? 14.Bd4 e5 –/+.

12.Qb3 Ba8 13.Rfc1 dc4 14.Nc4 Bd5 =.

12.Qb3 cd4 13.Bd4 e5 14.Bc3 –/+.

12.Rc1 Qb8 13.Qb3 (13.dc5 bc5 14.Qc2 Rfd8=) 13...Rfd8 (13...cd4 14.Nd4 Nc5 15.Qa3+=) 14.a4 (14.Qd3 a5=) 14...cd4+= 15.ed4 dc4 16.Bc4 Bf4 17.Rcd1 (17.Rc2 Qa8+=) 17...Nd5 (17...Qa8 18.Bc1–/+) 18.Rfe1+= N7f6 (18...Rc7 19.Ba3+=) 19.Ne5 Be5 (19...Qd6 20.Ba3 Qc7 21.g3=) 20.de5= Nd7 21.Bd4 Nf4 22.Bf1 Nc5 23.Bc5 Rc5 24.Qe3 (24.g3!? Ng6 25.f4=) 24...Nd5+= 25.Qg5 h6 26.Qg4 (26.Qg3!? Nc3 27.Rc1 Na4 28.Nb3+=) 26...Nc3–/+ 27.Nb3 Rd1 28.Rd1 Re5 29.Qg3?? (better is 29.Rd2–/+) 29...Nd1–+ 30.Nd4 (30.Nd2 Bd5–+) 30...Qd6 31.Nc6 Bc6 32.bc6 f6 33.Qb3 (33.Qf3 Rc5–+) 33...Nf2! 34.Kf2 (34.Qc2 Ne4 35.c7 Qc5 36.Qc5 Rc5–+ (36...bc5? 37.c8Q Kh7 38.Bd3+–)) 34...Qc5 35.Kg3 Re3 (35...Re3 36.Qe3 Qe3 37.Kh2 Qf4 38.Kg1 Qd4 39.Kh2 Qa4–+) 0–1. Hanscombe,Richard (1755) – Ward,Andrew, British Chess Championships, 2015.

12.Rc1 Rfd8 =.

11.h3 Rad8

12.Rc1 e5 =.

12.Qc2 cd4 13.Nd4 e5 14.Nf5 =.

12.Qc2 Ne4 13.cd5= Nd2 14.Nd2 ed5 15.Bd3 =.

12.Qc2 Ne4 13.cd5= ed5 14.Rfd1 Ndf6 =.

12.Qc2 Ne4 13.cd5= ed5 14.Ne4 de4 15.Nd2 Rfe8 16.Rac1 Qb8 (16...Bd5 17.Bc4 Bc4 18.Nc4+=) 17.Qb3 (17.Rfd1 Bd5=) 17...cd4 18.Bd4 Bh2 (18...Nc5 19.Qc2=) 19.Kh1 Be5 20.Bc4 Re7 21.Qb4 (21.Rfd1 Nc5 22.Qc3 Bd5=) 21...Nc5+= 22.Nb3 Bd6 (22...Red7 23.Nc5 bc5 24.Bc5+=) 23.Qc3 (23.Nc5 bc5 24.Bc5 Red7+=) 23...Ne6 24.Rfd1 (24.Be6 fe6 25.Rfd1 Red7=) 24...Rc8 (24...Rc7 25.Qd2=) 25.Qb2 Nd4 26.Nd4 Be5 27.Qb3 Rc5 (27...Rec7 28.Nc6 Bc6 29.bc6 Rc6 30.Bf7 Kh8 31.Rc6 Rc6 32.Bd5+/–) 28.Ne2 (28.Nc6 Bc6 29.bc6 Qc8=) 28...Rec7=+ 29.Bd5?? (better is 29.Rc2=+) 29...Bd5–+ (30.Rd5 Rc1 31.Nc1 Rc1 32.Rd1 Qc8–+) 0–1. Schwichtenberg,Juergen – Jugow,Alexander (2195), Hessen–ch Seniors, 2001.

11.h3 Rfd8

12.a4 Rac8 13.Rc1 Qb8 14.Rc2 cd4 15.Nd4 e5 16.N4f3 Re8 (16...Nc5 17.Qa1 Nfd7 18.a5=+) 17.Qa1 Ne4 (17...Nc5 18.a5=) 18.Rfc1= Ndc5 19.Bf1 (19.cd5 Bd5 20.a5 ba5 21.Qa5 Red8=) 19...Nd2 20.Nd2 d4 (20...Red8 21.cd5 Bd5 22.a5=) 21.ed4= ed4 22.Bd4 Re6 (22...Bh2 23.Kh1 Be5 24.Be5 Re5 25.a5=) 23.Bc5 (23.Bg7!? Qc7 24.a5+/–) 23...Rc5 (23...Bh2 24.Kh1 Rc5 25.Nb3=) 24.Nb3+= Rh5 25.f3 (25.Qc3 Bh2 26.Kh1 Be5–/+) 25...Be5 26.Qa3 (26.Qb1 Bh2 27.Kh1 Bf4=) 26...Rg6 (26...Bf4!? 27.Nd2 Rc5=+) 27.Kh1 (27.c5 Bf4 28.c6 Be3 29.Rf2 Rh3 (29...Bf2 30.Kf2 Ba8 31.Qe7+=; 29...Bc1?! 30.Nc1 Rh3 31.Re2 Qh2 32.Kf2 Qg3 33.Kg1 Bc6 34.bc6 Qh2 35.Kf2 Qg3 36.Kg1 Qh2 37.Kf2 Qg3 38.Kg1=) 30.c7 Qc8 (30...Bf2? 31.Kf2 Rf3 32.gf3+–) 31.Nd2 Bf2 32.Kf2 Rh5 33.Bd3 Re6 34.Ne4 Qd7 35.Be2 Re8 36.Nd6 Qe7 37.Bc4 Rf5 38.Qd3 Qh4 39.Kg1 Re1 40.Re1 Qe1 41.Qf1 Qe5 42.Nb7 Qe3 43.Qf2 Qc1 44.Bf1 Qc7 45.Qd4 Rf4 46.Qe3 g5 47.Qd2 Kg7 48.Qd5 Qe7 49.g3 Qe3 (49...Ra4 50.Nd6 Kg8 51.Bd3+=) 50.Kg2 A) < 50...Ra4 51.Bc4 Qe6 52.Qg5 (< 52.Qe6 fe6 53.Be6 a6+=) 52...Qg6 53.Qe5 Kg8 54.Qc3+–; B) 50...Rd4 51.Qf5 g4 (< 51...Ra4 52.Bd3 Ra2 53.Kh3+=) 52.Kh1 Qf3 53.Qf3 gf3 54.a5 Rd2 55.Bc4 h5 56.Kg1 f5 57.a6 Kf6 58.Bb3 Kg5 59.Bc4 Kg4 60.Kf1 Kg3 61.Ke1 Rd4 62.Bf1 f2 63.Ke2 f4 64.Na5 ba5 65.b6 ab6 66.a7 Rd8 67.a8Q Ra8 68.Kd3 Re8 69.Kd2 Re1 70.Bc4 f3 71.Ba6 Re2 72.Be2 fe2 73.Ke2 Kg2 74.Ke3 h4 75.Kd4 b5 76.Kc5 b4 77.Kc6 h3 78.Kb6 h2 79.Ka5 Kf3 80.Ka4 h1Q 81.Kb5 b3 82.Ka6 f1Q 83.Kb6 b2 84.Kc6 Ke3 85.Kc5 Qf8 86.Kb5 b1Q 87.Ka4 Qfb4) 27...Qc8 28.Nd2 Rg3 29.Qe3 Bd6= 30.Re1 Re5 31.Qf2 Re1 32.Qe1 Rg5 33.Ne4 Be4 34.Qe4 Re5= 35.Qd3 Bc5 36.Rd2 Re8 37.Re2 Rd8= 38.Qe4 g6 39.f4 Bd4 40.g3. Gouret,Thierry (2250) – Sanchez Almeyra,Jorge (2380), Paris–ch op, 1990.

12.a4 Rac8 13.Rc1 Qb8 14.Bd3 cd4 15.Bd4 e5 –+.

12.a4 cd4 13.Bd4 e5 14.Bb2 =+.

12.cd5 Bd5 13.Qc2 Rac8 =.

12.cd5 Bd5 13.Qc2 cd4 14.Qc7 Bc7 15.Nd4 Nc5 =.

12.Qb3 Rac8

13.a4 cd4 14.Nd4 Nc5 15.Qd1 =+.

13.a4 e5 14.cd5 cd4 15.Bc4 de3 16.fe3 Nc5 17.Qa2 Nce4 18.Rac1? (better is 18.Ne4!? Ne4 19.Rac1=) 18...Nd2–/+ 19.Nd2 Bc5 20.Rf3 Nd5 21.Ne4?? (better is 21.Nf1–/+) 21...Be3–+ 22.Re3 Ne3 23.Be6 (23.Bb3 Qd7 24.Re1–+) 23...Qc1 (23...fe6 24.Rc7 Rc7 25.Qe6 Rf7 26.Nd6 Rd6 27.Qd6 Bg2 28.Qe6= (28.Qe5? Rf1 29.Kh2 Rh1 30.Kg3 Rh3 31.Kf4 Rf3 32.Ke4 Rf5 33.Ke3 Re5 34.Be5 Bd5–/+)) 24.Bc1 Rc1 (24...fe6?! 25.Qe6 Kh8 26.Be3 Be4 27.Qe5=+) 25.Kh2 (25.Kf2 Nd1 26.Kg3 Be4 27.Bf7 Kh8–+) 25…Be4 (26.Kg3 Rc2 27.Bf7 Kh8 28.Qc2 Nc2–+) 0–1. Labahn,Wolfgang (2225) – Meijers,Viesturs (2415), Wichern op 2nd, 1993.

13.a4 e5 14.cd5 Nd5 15.Bc4 cd4 16.Bd5 +/–.

13.a4 e5 14.de5!? Ne5 15.a5 =.

13.Rac1 cd4 14.ed4 dc4 15.Nc4 Bf4 =+.

10.Nbd2 Rc8

11.a4 Qc7 12.Rc1 cd4 (better is 12...Rfd8!?=) 13.cd5+/– (13.Bd4 e5 14.Bb2 e4 15.cd5 Bc5+/–; < 13.ed4 Qb8=+) 13...Qb8 14.Rc8 Rc8 15.de6 fe6 16.Bc4 Bd5 (16...Kf7 17.Nd4 (< 17.ed4 Bf3 18.Qf3 Bh2 19.Kh1 Bf4+=) 17...Bh2 18.Kh1+/–) 17.Bd5+/– ed5 18.Bd4 Ne4? (better is 18...Qc7!?+/–) 19.Ne4+– de4 20.Qb3 Kh8 21.Ng5 (21...Rf8 22.Nf7 Rf7 23.Qf7+–) 1–0. pierred – Motz Markus, ChessWorld.net, 2005.

11.a4 cd4 12.Bd4 Bc5 (12...Qc7 13.Rc1=) 13.cd5 (13.Rc1 Bd4 14.Nd4 Nc5=) 13...Bd5 14.Rc1 Qe7 15.Bc5 (15.Bc4 Rfd8=) 15...Rc5 16.Rc5 Nc5 17.Bc4 (17.Qa1 Rd8=) 17...Rd8 (17...Rc8 18.Bd5 Nd5 19.Qa1=) 18.Bd5 (18.Qc2 Qb7=) 18...Rd5 (18...Nd5 19.Qa1 Nd3=) 19.Nd4 (19.Qc2 Nd3=) 19...Qd7 (19...e5!? 20.N4f3 Nfe4–/+) 20.Qc2 e5 21.N4f3 Kf8 (21...Nd3 22.Rd1 Rc5 23.Qb1=) 22.Rd1 (22.e4 Rd6 23.Ne5 Qe8+/–) 22...Nfe4 (22...e4 23.Nd4=) 23.h3 (better is 23.Ne5 Qf5 24.Nef3+/–) 23...Na4?? (better is 23...Qd6=+) 24.Qa4 (24.Qe4 Nc3 25.Qb4 Rc5+–) 24...Nd2 25.Qb4 (25...Qe7 26.Qe7 Ke7 27.Nd2 Rb5 28.Ne4+=; better is 25.Nd2!? a5 26.Qc2+–) 1–0. hal1958 – pkchess, playchess.de, 2002.

11.a4 cd4 12.Nd4 Bb4 13.Rc1 Nc5 14.Bc3 (better is 14.N2f3!?=) 14...Bc3–/+ 15.Rc3 e5 16.Nf5 g6 17.Ng3 d4 18.ed4 ed4 19.Ra3 Qd6 20.Bf3 Rc7 21.a5 Nce4 22.ab6 ab6 23.Ra7?? (better is 23.Nde4 Ne4 24.Be4 Qa3 25.Qd4=) 23...Ng3–+ 24.hg3?? (better is 24.Rb7 Nf1 25.Qf1–+) 24...Bf3 (24...Bf3 25.Nf3 Ra7 26.Qd4 Qd4 27.Nd4 Ra2–+) 0–1. Huelle,Gunter – Jaenig,Philipp (1810), Leipzig VfB op, 2006.

11.Qa4 Qc7 =.

11.Nb3 Qe7 12.a4 Rfd8 13.Ba3 (13.dc5 Nc5 14.Nc5 Rc5 15.cd5 Bd5=+) 13...cd4 (better is 13...dc4!? 14.Nbd2 Bf3 15.gf3 c3–/+) 14.Bd6=+ Qd6 15.Nbd4 (15.Qd4 e5 16.Qh4 dc4 17.Bc4 e4–/+) 15...e5 16.Nf5 Qc5 (better is 16...Qe6!? 17.Qb1 Ne4–/+ (17...dc4? 18.Ng5 Qe8 19.Nd6+–)) 17.cd5 Nd5 18.Bd3?? (better is 18.Rc1 Qb4 19.Rc8 Rc8 20.e4=) 18...N7f6 (18...Nc3 19.Nd6 Nd1 20.Nb7–+) 19.e4? (better is 19.Ng5 Nc3 20.Qb3–+) 19...Nf4 20.Ng5 (20.N3d4–+) 20...Rd3 21.Qb1 Ne4 22.Nf7 (22.Ne4 Be4 23.Ng3 Rg3 24.Qe4 Rg2 25.Kh1 Rf2 26.Qb7–+) 22...Kf7 (22...Nc3 23.Qd3 Nd3 24.N7d6 Ne2 25.Kh1 Nf2 26.Rf2 Qf2 27.Ne7 Kf8 28.Nd5 Bd5 29.Ne4 Be4 30.a5 Bg2) 23.Qa2 (23.Qb2 Nc3 24.Rae1 Bg2–+) 23...Qc4 (better is 23...Kf6 24.Nh4–+) 24.Qc4 Rc4 25.Ne3 Rc8 26.Rac1 (26.Rfd1–+) 26...Ne2 27.Kh1 0–1. bloodymama – PrinceMyshkin, Live Game Caissa's Web, 2004.

11.Rc1 a5 12.dc5 Nc5 13.cd5 Nd5 14.Nc4 =.

11.Rc1 a6 =.

11.Rc1 Bb8 12.Re1 Ne4 13.a4 Ndf6 14.h3 h6 15.dc5 Nc5 (worse is 15...Rc5 16.Ba3+/–) 16.Be5 Be5 17.Ne5 Qc7 18.Nef3 Rfd8 19.Qc2 dc4 20.Bc4 Nce4 21.Qa2 Nd2 22.Nd2 Qe5 23.Nf3 Bf3 24.gf3 Qf5 25.Kg2 Nd7 26.Be2 Nc5 27.Red1 Qg5 28.Kf1 Qh4 29.Bc4 (29.Rd8!? Rd8 30.Kg2+=) 29...Qh3–/+ 30.Ke2 Rd1 31.Rd1 Qf5 32.e4? (better is 32.Rd4–/+) 32...Ne4!–+ 33.Rd3 (33.fe4 Qe4 Double attack) 33...Nc5 34.Re3 Rd8 35.a5 Qf4 (35...ba5!? 36.Ke1–+) 36.ab6 ab6 37.Be6 (37.Qc2–+) 37...fe6 (better is 37...Ne6 38.Re6 Qc1–+) 38.Re6 (38.Kf1 Qh4 39.Qc2 Qb4–+) 38...Ne6 (better is 38...Qf7 39.Qc4 Ne6 40.Ke3–+) 39.Qe6 Kf8 40.Qb6 (40.Qg4 Qc1 41.Qb4 Ke8 42.Qe4 Kf7 43.Qf5 Kg8–+) 40...Qd6 (40...Qc4 41.Ke1 Qc1 42.Ke2 Qd1 43.Ke3 Rd3 44.Kf4 Qf3 45.Ke5 Rd5 46.Ke6 Qe4) 41.Qa5 Qd3 0–1. Schwichtenberg,Juergen (1895) – Trefzer,Erhard (2080), Staufer op, 2009.

11.Rc1 Qc7 12.g3 Rfd8 13.Bd3 Qb8 14.Re1 (14.cd5 ed5 (14...Bd5? 15.e4+–) 15.dc5 Rc5=) 14...Qa8 (14...Ne4 15.cd5 ed5 16.Be2=) 15.Qe2 (15.cd5 ed5 (worse is 15...Bd5 16.e4 c4 17.ed5 cd3 18.de6 fe6 19.Nc4+/–) 16.dc5 Rc5+=) 15...Re8 (15...cd4 16.ed4 (16.Bd4? e5–+) 16...dc4 17.Rc4 Rc4 18.Bc4=) 16.e4 (16.Ne5 cd4 17.ed4 g6+=) 16...de4 17.Be4 Ne4 18.Ne4 Be7 19.Ned2 (19.Neg5!? h6 20.Nf7 Bf3 21.Qe6=) 19...Rcd8+= 20.a4 (20.Red1 cd4 21.Nd4 g6–/+) 20...Bf6 (20...cd4 21.Bd4 e5 22.Bc3–+ (22.Ne5?? Bc5 23.Qg4 Nf6–+; 22.Be5?? Bb4 23.c5 bc5–+)) 21.Ne4 Be4 (21...cd4!? 22.Nf6 Nf6 23.Nd4 e5+=) 22.Qe4+= Qe4 23.Re4 cd4 24.Bd4 (24.Nd4?? Nc5 25.Ne6 Bb2 (25...Ne6?! 26.Bf6 gf6 27.a5–+) 26.Nd8 Re4–+) 24...Bd4 25.Rd4 (25.Nd4? Nf6 26.Rf4 e5 27.Rf6 gf6–/+ (worse is 27...Rd4 28.Rc6+=; 27...ed4?! 28.Rc6=)) 25...Nc5 26.Rd8 Rd8 27.Ra1 (27.Ne5 Rd6=) 27...Rd3 (27...f6!?+=) 28.Ne5= Rd4 29.Nc6 Rc4 (better is 29...Rd7=) 30.Rd1 f6 31.Na7 Ra4 32.Nc6 Ra2 33.Rd6 Rb2 34.Na7+= Na4 35.Re6= Kf7 36.Rc6 Kg6 37.Kg2 Rb3 38.h4 h5 39.Rd6 Kh6 40.Re6 Kg6 41.Rc6 Kh6 ½–½. Kowacz,Agnieszka – Murawko,Julia (1615), OOM w Sportach Umyslowych w Szachach D1 Poland, 2012.

11.Rc1 Qc7 12.h3 Qb8 13.Nb3 dc4 14.Bc4 Rfd8 15.Qe2 Be7 (15...Bf3 16.Qf3 cd4 17.Bd4=) 16.Rfd1 cd4 17.Bd4 Ne4 18.Nbd2 Nd2 (18...Ba3 19.Rc2=) 19.Nd2 (19.Rd2 e5 20.Bb2 Bb4+=) 19...Bf6 20.Nb3 (20.Bf6 Nf6 21.Bd3 Rc1 22.Rc1 Qd6=) 20...Bd4 (20...Ne5!?=) 21.Nd4+= Nc5 ½–½. Schulze,Hanjo – Knab,Reinhard, Nuremberg op, 1990.

11.Rc1 Qc7 12.h3 Rfe8 ½–½. W Labahn – Schrader, 1981.

11.Rc1 cd4 12.Nd4 Qe7 13.cd5 Rc1 14.Qc1 Nd5 15.Nc4 =.

11.dc5 Nc5 12.cd5 Bd5 13.Bc4 Qe7 14.Bf6 Qf6 15.Bd5 ed5 16.Nb3 Nb3 17.ab3 Rc5 18.Ra7 Rb5 19.Qd4 Rb3 20.Qf6 gf6 21.Rd7 Be5 22.Rd5 Re8 23.g4 Rb2 24.Rc1 Ra2 25.Rb5 Re6 26.Nd4 Rd6 27.Rc8 Kg7 28.Nf5 Kg6 29.Rg8 1–0. Bonetti,Shane – Socket, ICC, 2002.

11.dc5 Nc5 12.cd5 Nd5 13.Rc1 (13.Nc4 Be7=) 13...Nb4 14.Nc4 Bb8 15.Qe1 (15.a3 Nbd3 16.Rc2 Nb2 17.Qd8 Rfd8 18.Rb2 Ne4=+) 15...Nbd3 (15...Bf3!? 16.Bf3 Ncd3–+) 16.Qc3=+ Nb2 17.Nb2 Qf6 (better is 17...Qc7!? 18.g3 Rfd8=+) 18.Qf6= gf6 19.Rfd1 Rfd8 (19...Bd5 20.Nc4=) 20.Rd8 Rd8 21.Rd1 (21.Nc4 Bd5+=) 21...Rd1= 22.Nd1 Kf8 (22...a6 23.ba6 Na6 24.Nb2=) 23.Nd4 Ke7 (23...a5 24.ba6 Na6 25.Nb2=) 24.Nc6+= Bc6 25.bc6 Kd6 26.Bf3 e5 (26...a6 27.Nc3+=) 27.Nc3 a6 28.g4 b5 29.Bg2 b4 30.Nd5 e4 31.Nf6+– Kc6 32.Ne4 Kb6 33.Ng5 a5 34.Nh7 a4 35.Bd5 a3 36.Bf7 b3 37.g5 Bd6 38.f4 Be7?? 39.Bb3 Nb3 40.g6 Bc5 41.Kf2 Nc1 42.g7 Na2 43.g8Q Nb4 44.Qb8 Ka5 45.Qa8 Na6 46.Qd5 Kb5 47.Qb3 Ka5 48.h4 (48...Be7 49.h5+–; better is 48.Nf6!? Bb4 49.Nd5 Bc5+–) 1–0. Registration (2380) – gvdr (1660), ICC, 2003.

11.Ne5 Qc7 12.f4 =.

11.Ne5 cd4=+ 12.ed4 a6!? =+.

11.Ne5 cd4 12.ed4 Qc7 13.f4 =.

11.Ne5 cd4=+ 12.ed4 Be5 13.de5+= Ne4 14.cd5 (14.Ne4 de4 15.Qd2 Nc5+=) 14...Nd2 (14...Bd5 15.Ne4 Be4 16.Qd4+=) 15.Qd2+= Bd5 16.f4 (16.Rfd1 Qh4+=) 16...Nc5= 17.Bd4 Qd7 18.Rad1 (18.Rfd1 Qb7 19.Bf1 Rfd8=) 18...Qb7 19.Bc5 (19.Bg4 Bc4 20.Bf3 Qe7=) 19...Rc5 (19...bc5 20.Rf2=+) 20.Bd3 Be4 (20...Rfc8 21.Qe2=) 21.Qe2 (21.a4 Bd5=) 21...Bd3 22.Rd3 (22.Qd3 Rd5 23.Qf3 Rfd8=) 22...Rfc8 (better is 22...Rb5!? 23.Rd6 Rd5=+) 23.Rfd1+= Rc1 24.Qd2 (24.Qc2 Rd1 (24...R8c2?? 25.Rd8) 25.Qd1 Qc7+=) 24...Rd1 25.Qd1 Qc7 26.h3 h6 27.Rd7 (27.a4!?+=) 27...Qc4= 28.Qd2 Qb5 29.Ra7 Qb1 30.Kh2 Qf5 31.Ra4 Kh7 32.Qe3 Rc5 33.Qe4 Qe4= 34.Re4 g5 35.fg5 hg5 36.a4 Kg6 37.g4 Rc2 38.Kg3 Rc3 39.Kg2 Rb3 40.Rc4 Kg7 41.Kh2 b5=+ 42.ab5 Rb5 43.Re4 Kf8 44.Re3= Rb2 45.Kg3 Rb1 46.Kf2 Ke7 47.Ra3 Rb5 48.Re3 Kd8 49.Rd3 Rd5 50.Rd5 ed5 51.Ke3 Kd7?? 52.Kd3= Kc7 53.Ke3 Kb6 54.e6 fe6 55.h4 gh4 56.g5 h3 (57.Kf2 h2–/+) 0–1. Bulcourf,Carlos (2295) – Mendez Ataria,Ernesto (2385), Vicente Lopez op, 1993.

11.Rc1 Qe7

12.Qa4 Ra8 =.

12.Qa4 cd4 13.Bd4 Nc5 14.Bc5 bc5 =.

12.Ne5 Bb8 13.Ndf3 (13.Nd7 Nd7 14.f4 Bd6=) 13...Rfd8 14.Nd7 (14.Qa4 Ne5 15.Ne5 Ne4=) 14...Nd7 15.Qd3 (15.cd5 Bd5 16.Bc4 Qf6=) 15...dc4 16.Qc4 (16.Rc4? Bf3 17.gf3 Qg5 18.Kh1 Ne5 19.de5 Rd3 20.Bd3 Qh5–+) 16...e5 (16...Qf6 17.Rfd1=) 17.de5= Ne5 18.Ne5 Be5 19.Be5 Qe5 20.Rfd1 Bd5 21.Qa4 (21.Qh4 Rd6=) 21...Qe7 (21...Rd6 22.a3=) 22.Rd2 (22.Bg4 Be6+=) 22...Be6 (22...c4 23.Rd4 c3 24.Bg4+=) 23.Rd8 Rd8 24.Bc4 (24.Qc2 Qh4=) 24...Bc4 (24...Qh4 25.g3 Qe4 26.Qc2 Qc2 27.Rc2=+) 25.Qc4= h6 (25...Rd2 26.a3=) 26.g3 Rd2 27.a4 Qf6 28.Qf4 Qf4=+ 29.gf4 Ra2 30.Rc4 f5 31.h3 Ra3 32.Kg2 Kf7 33.Kf3 Ke6 34.h4 Kd5 35.Rc1 Ra4 36.Rg1 Kc4 37.Rg7 Kb3 38.Rc7 c4 39.e4 fe4 40.Ke4 c3 41.Kd3–/+ Rf4 42.Rc3 Kb4 43.Rc7 Rf2 44.Ra7 Rf4 45.Re7 Rh4 46.Re5 Rh2 47.Rd5 h5 48.Ke4 Kc4 (49.Rf5 Rh1–+) 0–1. Franke – Pichler,Juergen, corr DDR, 1985.

12.Ne5 cd4 13.ed4 dc4 14.Ndc4 =.

12.h3 a5 13.ba6 Ba6 14.Ne5 =+.

12.h3 Rfe8 13.Ne5 (13.Qa4 Ra8=) 13...cd4 14.Nd7 (14.ed4 a6=) 14...Nd7=+ 15.Bd4 Nc5 (15...e5 16.Bb2=+) 16.Bb2 (16.cd5 Bd5 17.Bc4 Qg5 18.Bd5 ed5=) 16...Rc7 (16...Red8 17.cd5 Bd5 18.Bc4=+) 17.Nf3 (17.cd5 Bd5 18.Bc4 Bc4 19.Nc4 Rd8 20.Nd6 Rd6= (20...Qd6? 21.Qd6 Rd6 22.Be5+–)) 17...Rec8 (17...dc4 18.Bc4 Rd8 19.Qe2=+) 18.Qd4 f6 19.Qd1 (19.Rfd1 Na4 20.cd5 Nb2 21.Rc7 Qc7 22.Qb2 Bd5=) 19...Ne4 20.Qb3 (20.Qa4=+) 20...Nc5 (20...dc4 21.Bc4 Nc5 22.Qd1=+) 21.Qd1 Ne4 (21...dc4 22.Bc4 Bf3 23.gf3=+) 22.Qb3= ½–½. Gross,Wilhelm – Merten,Rainer, xxv/16, 1994.

11.Ne5 Bb8

12.Nd7= Nd7 13.Bf3 cd4 14.ed4 (14.cd5!? Qc7 15.g3 de3 16.fe3 Bd5 17.Bd5 ed5 18.Rf5=+) 14...dc4 15.Bb7 Qc7 16.g3 (16.f4!? Qb7 17.Rc1–/+) 16...Qb7–+ 17.Rc1 Qd5 18.Qa4 h5 (better is 18...a6!? 19.ba6 b5–/+) 19.Nc4 h4 20.Ne3 Qe4 21.Qb3 (21.Ba3 hg3 22.hg3 Ne5 23.Bf8 Nf3 24.Kh1 Ne1 25.Kg1 Rc1–+) 21...Nf6=+ 22.d5 (22.Ng2!?=+) 22...Nd5–/+ 23.Nd5 ed5 24.Rce1 (24.Rfd1 Rc1 25.Bc1 Rd8–/+) 24...Qc2 25.Qa3 Rcd8 (25...Rc5 26.Be5 Be5 27.Re5 hg3 28.hg3 Rb5 29.Qa7–/+) 26.Bd4 Qf5 (26...Rfe8 27.Rc1 Qe2 28.Qb3–/+) 27.f4 (27.Qb2 Qg5=+) 27...Rfe8–/+ 28.Qc3 Re1 29.Re1 Rc8 30.Qe3 Bd6 31.a4 Rc4 32.Qe8 Kh7–+ 33.Qd8 Bf4! 34.Bf2 Bg5 35.Qe8 Qf3 36.Qe2 Qe2 37.Re2 hg3 38.hg3 d4 39.Re1 d3 40.Kf1 Ra4 41.Rd1 d2 42.Ke2 Rb4 43.Ra1 Rb5 44.Ra7 Rd5 45.Ra1 b5 46.Kd1 Rd8 47.Rb1 Rc8 (48.Be3 Be3–+) 0–1. Bulcourf,Carlos (2210) – Darcyl,Tomas (2365), Buenos Aires ITT, 1992.

12.Nd7= Nd7 13.f4!? =.

12.Bf3 Qc7 13.cd5 ed5 14.g3 (14.Rc1 a6=) 14...Rcd8 (14...Rfe8 15.Nd7 Nd7 16.dc5 bc5 17.Rc1=) 15.Bg2 (15.Nd7 Nd7 16.Rc1 Rc8=) 15...Rfe8 (15...Ne5 16.de5 Nd7 17.Nf3=) 16.f4 (16.Nd7 Nd7 (< 16...Rd7 17.dc5 bc5 18.Bf6 gf6 19.Rc1+/–) 17.dc5 bc5=) 16...Qd6 (16...Rc8 17.Rc1=+) 17.a4 (17.Rc1 Rc8= (17...Ne5? 18.fe5 Qd7 19.ef6+–)) 17...Qe6=+ (17...Ne5? 18.fe5 Qe6 19.ef6 Qe3 20.Kh1+–) 18.h4 (18.a5 Rc8=+) 18...Ne4 (18...Rc8 19.a5–/+) 19.Kh2 (19.Ne4 A) 19...Ne5? 20.Ng5 (< 20.fe5 de4 21.Qe2 Qg6=+) 20...Nf3 21.Rf3+– (21.Nf3?! Qe3 22.Rf2 a6+/–; 21.Bf3?! Qe3 22.Kg2 Bd6+–); B) 19...de4 20.Nd7 Rd7=+) 19...g6 (19...Ndf6 20.Ne4 Ne4 21.a5–/+) 20.Bh3 (20.Ne4!? de4 21.Nd7 Rd7 22.a5=+) 20...f5=+ 21.Ndf3 (21.a5 Ne5 22.fe5 a6=+) 21...Ndf6 22.Ng5 Ng5 23.hg5 Ne4 24.a5 Be5 25.fe5 Qe7 26.Bg2 Qg5–/+ 27.Be4 de4 28.ab6 ab6–+ 29.Ra7 Bd5 30.Qe2 c4 31.Bc3–/+ Re7 32.Ra6 Rb8 33.Bb4 Reb7 34.Kh3 Rc8 35.Bc3 h5 36.Rf4 Qd8 37.Kg2 Qd7 38.Qb2 g5 39.Rf2 f4 40.Qb4?? Qg4–+ 41.Qd6 Qg3 42.Kf1 Qh3 43.Kg1 Be6 44.Rb6 Rb6 45.Qb6 Qg3 46.Rg2 Qe3 47.Kf1 Qh3 48.Kg1 Qf5 49.d5 g4 50.Qe6? Qe6–/+ 51.de6 e3 52.e7 g3 53.e6 h4 54.Re2 Kh7 55.b6 Rg8 56.Kg2 h3 57.Kh3+/– f3? 58.Re3+– g2 59.Re1?? f2–+ 60.e8Q 60...Re8 61.Kg2 fe1Q 62.Be1 Re6 63.Ba5 Re3 64.Kf2–/+ Rb3 65.Ke2 Rb5 66.b7 (66.Bc3 Rb6 67.Ke3 Rd6–+) 0–1. Shakirianov,M – Horunzhy,M, ch RUS tt, 1995.

12.Bf3 Qc7 13.Rc1 Rfd8 =.

12.Bf3 Qc7 13.cd5 Ne5 14.de5 Bd5 15.e4 =.

12.Bf3 Ne5 13.de5 Nd7 14.cd5 Ne5 15.de6 Nf3 16.Nf3 fe6 17.Ne1 =+.

10.Nbd2 cd4

11.ed4 a6 12.ba6 Ba6 13.a4 =+.

11.ed4 Ne4 12.Ne4= de4 13.Ne5 Ne5 14.de5 Bc5 15.Bg4 (15.Qd8!? Rad8 16.Rfd1=+) 15...Qh4=+ 16.Qe2 Rad8 17.g3 (17.Rad1 Rd1 18.Rd1 Bf2 19.Qf2 Qg4=) 17...Qg5–/+ 18.h4 Qg6 19.h5 (19.Kh2!?=+) 19...Qg5–/+ 20.Rad1 (20.Kh2 Bd4 21.Bd4 Rd4=+) 20...Rd3!–+ 21.Kh2 (21.Qd3 ed3) 0–1. Kern,Guido (2410) – Schwenteck, Hessen clubgame, 1997.

11.ed4 Qe7 12.Qb3 Bb4 13.Bc3 Bc3 14.Qc3 Rfc8 15.a4 Rc7 16.a5 Rac8 17.Ra4 dc4 18.Rc4 Nd5 19.Qc1 ba5 20.Rc7 Rc7 (20...Nc7?! 21.Qa1+=) 21.Qa1 Nf4 22.Re1 Qb4 23.Ne5?? (better is 23.Bf1–/+) 23...Qd2 24.Bf3 (24.Bh5 Nh5 25.Rd1 Qe2 26.Nd7 Rd7–+) 24...Ne5 25.de5 Bf3 26.gf3 Rc2 27.Rf1 (27.Qb1 Qf2 28.Kh1 Qh2) 27...Nh3 (27...Qd3 28.Rd1 Qg6 29.Kf1 Qg2 30.Ke1 Qf2) 28.Kg2–+ Nf2 29.Kg3 Qg5# 0–1. Pies,Gerhard – Dramiga,Joe (1730), Leverkusen–ch op, 2005.

11.Bd4 Rc8 12.Ne1 (12.Rc1 e5 13.Bb2 Qe7=) 12...Qc7+= 13.Rc1 (13.f4!?+=) 13...Bh2–/+ 14.Kh1 Bd6 (14...Be5 15.Nef3 Bd4 16.Nd4–/+) 15.Bf3 (15.f4 Ne4 16.Ne4 de4–+) 15...Bc5 (15...Qb8 16.Rc2–/+) 16.Bf6 (16.cd5 Nd5 17.Bd5 Bd5–/+) 16...Nf6 (worse is 16...gf6 17.cd5 Bd5 18.Bd5 ed5 19.Qg4 Kh8 20.Nef3+=) 17.a4 (17.cd5 Nd5 18.Nd3 Qe7 19.Nc5 Rc5 20.Rc5 bc5–/+) 17...Rfd8 (17...Bb4 18.Be2–+) 18.Qc2 (18.cd5 Nd5 19.Qe2 Qe7–+) 18...dc4 (better is 18...Bb4!?–+) 19.Nc4 Opening the c–file gets Black a lot of play. 19...Bf3 (19...Bd5 20.Bd5 ed5 21.Nd2–/+) 20.Nf3–/+ Rd5 21.g3 (21.Qe2!?–/+) 21...Be3! Black gets the initiative 22.Ne3 (22.fe3 Rc5) 22...Rc5 23.Nc4 Rc4 24.Qc4 Qc4 25.Rc4 Rc4 26.Ra1 (26.Rd1 Nd5 27.Rd4 Rd4 28.Nd4 Nc3–+) 26...Ne4 27.Ra2 f6 28.Kg2 Nc5 29.a5 (29.Nd2 Ra4 30.Ra4 Na4–+) 29...ba5 (better is 29...Rb4!? 30.ab6 ab6 31.Ra7–+) 30.Ra5 Ra4 31.Ra4 Na4 32.Nd4 Nc3 33.Ne6 Nb5 (33...Nb5 34.Nc5 a5–+) 0–1. Hasler,Ulrich (1905) – O'Neill,Jon (1900), internet, 2000.

11.Bd4 e5 12.Bb2 +=.

11.Nd4 Qc7 12.f4 Nc5 =.

11.Nd4 Qc7 12.h3 Rfd8=+ 13.Rc1 Nc5 14.Qc2 Bh2 (14...Rac8 15.cd5 Bd5 16.Nc4=+) 15.Kh1= Be5 16.N2f3 (16.cd5 Nd5 (< 16...Rd5 17.f4+/–) 17.N2f3 Bf6=) 16...Bd6 17.cd5 Bd5 18.Nb3 Rac8 (18...Nfe4 19.Nc5 bc5 20.Bd3=) 19.Nc5 bc5 (19...Qc5 20.Qd2 Qb4 21.Qb4 Bb4 22.a3=) 20.Nd2 (20.Bf6!? gf6 21.e4+=) 20...Qb7 21.Rg1 Bb8 (21...Ne4!? 22.Ne4 Be4=) 22.Bf6+= Qc7 (22...gf6 23.e4 Qc7 24.Nf3=) 23.f4 gf6 24.Nc4 (24.Rgd1 Qe7+=) 24...Qe7 (24...Qd7 25.a4+=) 25.Na5 (25.Bf3 Qd7 26.b6 Qb5 27.ba7 Ba7+=) 25...Qc7 (25...f5 26.Bf3 h6 27.Bd5 ed5 28.Nc6 Qe3 29.Nd8 Rd8 30.Rcf1+/–) 26.Nc4 (26.Qc3 Qb6= (< 26...Ba2 27.Nc6+–)) 26...Qe7 27.Na5 (27.Bf3 Qd7 28.b6 Qb5 29.ba7 Ba7+=) ½–½. Mehlhorn,U – Hauptmann,G, M–356–D, 2001.

10.Nbd2 Bd6

11.Qc2 a6 12.ba6 Ba6 13.e4 cd4 14.Bd4 =+.

11.Qc2 Qc7

12.a4 cd4 13.ed4 Rac8 14.Ba3 dc4 15.Nc4 Ba3 16.Ra3 =+.

12.a4 cd4 13.ed4 Rac8 14.Ba3 Rfe8 15.Bd6= Qd6 16.Rfc1 e5 17.de5 Ne5 18.Ne5 (18.a5 d4 19.Ne5 Re5=) 18...Qe5 19.Bf3 Ne4 20.Ne4 de4 21.Be2 (21.Bg4 f5 22.Bh3 Bd5=+) 21...e3 22.f3 (22.Bd3 h6=+) 22...Rcd8 23.Ra2 (23.a5 Rd2 24.Qb1 Re2 25.ab6 Qg5–+) 23...Rd2–/+ 24.Qb1 Re6 (24...Qc5 25.Rd1–/+) 25.Rcc2 (25.a5 Qf4–/+) 25...Rh6 26.g3 Qh5 27.h4 (27.Kf1 Qh2 28.Rd2 Qh1) 27...Rg6 (27...Qg6!? 28.Kf1–+) 28.Kh2?? (28.Rd2 Rg3 29.Kf1 Qh4 30.Rd8 Qd8 31.Bd3–+) 28…Qf3 (29.Qg1 Qe2 30.Qf2 Qf2 31.Kh3 Qg3#; 28...Bf3?! 29.Rd2 ed2 30.Rd2=) 0–1. Klarius,G – Iotov,VD, ICCF World Cup, 1989.

12.a4 cd4 13.Bd4 e5 14.Bc3 a5 =.

12.Bd3 cd4 13.Bd4 e5 –/+.

12.cd5!? ed5 13.dc5 bc5 14.Rfd1 =.

10.Nbd2 Ne4

11.cd5 Nd2 12.Qd2 Bd5 13.Rfd1 =.

11.cd5 ed5 12.dc5 Ndc5 13.Nb3 (13.Nd4 Qf6=) 13...Na4 14.Qd4 (14.Bd4 Nac3 15.Qd3 Rc8=) 14...Nb2 15.Qb2 Bb4 (15...f5 16.Rad1=) 16.Rac1 (16.Rfc1 Bd6+=) 16...Qe7 (16...Qd6 17.Rc2=) 17.Nbd4+= f5 (17...Rfc8 18.Qb3+=) 18.Nc6 (18.Qb3 f4+=) 18...Bc6= 19.Rc6 (19.bc6 Ba3 20.Qd4 Bc1 21.Qd5 Kh8 22.Rc1 Rac8=) 19...Bc5 (19...f4 20.ef4 Rf4 21.Bd3=) 20.Qe5 (20.Qb3 Rad8 21.Rd1 Nf6+=) 20...Qe5= 21.Ne5 Rfe8 22.Nd3 Ba3 (22...d4!? 23.ed4 Bd4+=) 23.Nf4+/– Nf6 (23...Rad8 24.Rd1+/–) 24.Bf3 (24.Rd1 Rad8+/–) 24...Rad8 25.Rd1 d4 26.Ne6 (26.ed4?! Rd4 27.Ne6 Rb4+=; 26.Rd4?? Rd4 27.g4 Rb4–+) 26...Rd6 (26...Re6 27.Re6 d3 28.Rc6+–) 27.Nd4 g6 (27...f4 28.Rd6 (28.ef4? Rd4 29.Kf1 Rf4–+) 28...Bd6 29.Bc6+–) 28.h3 (28.Nf5 Rd1 29.Bd1 gf5 30.Rf6 Re5 31.Bb3 Kh8+–) 28...Red8 29.Rd6 Rd6 30.Nc6 Rd1 31.Bd1 Ne4 32.Na7 Kf8 33.Bb3 Nd6 34.Kf1 h6 35.Ke2 Ke8 36.Kd3 Kd7 37.Bc4 Ne4 38.f3 Nc5 39.Ke2 Nb7 40.Nc6 Kd6 41.Bf7 g5 42.Bg6 f4 43.ef4 gf4 44.Nd4 ½–½. Michalke,Markus – Kotzem,Ernst, VK Gr1, 1999.

11.Ne5 Nd2 12.Qd2 Be5 (12...Qc7 13.Nd7 Qd7 14.dc5 Bc5 15.Rfd1=) 13.de5+= Qc7 14.f4 Rfd8 15.Qc3 Nf8 Black plans d4 16.Rad1 Rd7 17.Qe1 (17.Qc2 a6+=) 17...Rad8 18.Qc3 d4 19.Qc2 (19.Qd3 Ng6=) 19...de3+= 20.Qc1?? (better is 20.Bc1+=) 20...Rd2–+ 21.Rd2 (21.Rde1 Ng6 22.Qc3–+) 21...Rd2 (21...ed2?! 22.Qd1–/+) 22.Re1 (22.Bf3 Bf3 23.gf3 Ng6–+) 22...Qd8 23.Bc3 (23.g3 Qa8 24.Bf1–+) 23...Qh4 24.Bd2 Qf2 0–1. Tagirov,Kajum K (1920) – Karimov,Farid (2040), Memorial Siamidi, 2008.

10.Nbd2 Qe7

11.a4 a6 12.Bd3 =.

11.a4 dc4 12.Nc4= Bc7 (12...Bd5 13.Nfe5 Rac8 14.a5=) 13.Rc1 (13.Nfe5 Rad8 14.f4 Ne5 15.Ne5 cd4 16.ed4 Nd5=) 13...Rfd8 14.Qb3 (14.Bd3 Nd5=) 14...Bd5 (14...Ne4 15.Nfd2=) 15.Qa3 (15.g3 Ne4=) 15...Ne4 (15...a6 16.dc5 bc5 17.Nce5 ab5 18.Bb5=) 16.Rfd1= Re8 (16...a6 17.ba6 Ra6 18.Ncd2=) 17.Qa1 (17.Nfe5 Be5 18.de5 Qh4+/–) 17...f6 (17...Rec8 18.h3=) 18.Bd3 cd4 (18...Rac8 19.Qa3=) 19.Be4+= Be4 20.Ncd2 Bf3 21.Nf3 Rac8 (21...Nc5 22.Nd4 (22.Bd4? Nb3 23.Qa2 Nc1 24.Rc1 Rac8–+) 22...a6 23.Ba3 ab5 24.Nb5+=) 22.Nd4+/– Bb8 (22...Qf7 23.Nc6 Nb8 24.Qa2+/–) 23.Ba3 (23.Nc6 Qf7+/–) 23...Qf7 (23...Rc1 24.Qc1 Qf7 25.Nc6+/–) 24.Nc6+– Kh8 25.Qd4 (25.Qd4 Ne5 26.f4 Nc6 27.bc6+/– (27.Rc6?! e5 28.Qd2 ef4 29.ef4 h6=)) 1–0. Mackiewicz – Olej,Emil, Sokolow Podlaski Poland, 1966.

11.a4 Rac8 12.a5 cd4 13.Nd4 Ne5 14.cd5 (14.a6 Ba8 15.Rc1 Rfd8=) 14...Bd5 (14...Nd5 15.e4 Nc3 16.Bc3 Rc3 17.ab6 ab6 18.Nb1=) 15.f4 Ng6 16.ab6 (16.Bf3 ba5 17.Nc6 Bc6 18.Bc6 Nd5=) 16...ab6 17.g3 (17.Ra6 Bc5=) 17...Bc5 (17...Rfd8 18.Bf3=+) 18.N2b3= Qb7 ½–½. Kern,Guido (2300) – Mayer, Hessen clubgame, 1995.

11.a4 cd4!? 12.Nd4 Rac8 +=.

11.a4 Ne4 12.a5 ba5 13.Ra5 Bc7 14.Ra2 Nd2 15.Nd2 (15.Qd2 dc4 16.Rfa1 Bd5=) 15...cd4 16.ed4 (16.Bd4 a6=) 16...dc4=+ 17.Nc4 Qg5 18.f3 Qh4 (18...Rfc8 19.Bd3–/+) 19.g3 Bg3 20.hg3 Qg3 21.Kh1 Nf6 22.Ne3 Qh3 23.Kg1 Qg3 24.Kh1 Qh3 ½–½. Grund,Karl – Stuhlmann, corr, 1972.

11.a4 e5 12.a5 ba5 13.Nb3 ed4 14.Na5 Nb6 =.

11.a4 e5 12.a5 a6 13.dc5 Bc5 14.Nb3 e4 (14...Bb4!? 15.ba6 Ba6 16.cd5 Be2 17.Qe2 ba5+=) 15.Nfd4+= ab5 (15...dc4 16.Bc4 Qe5 17.ab6 ab5 18.Nc5 Ra1 19.Nd7 Nd7 20.Bf7 Rf7 21.Ba1+/–) 16.cb5+/– (16.Nc5 Nc5 17.Nf5 Qd8 18.cb5 Ra5 19.Ra5 ba5+=) 16...ba5 17.Na5 Nb6 (17...Bd4 18.Qd4 (18.ed4?! Qb4 19.Nb7 Qb2=) 18...Rfb8 19.Rfc1+/–) 18.Qc2 (18.Ndb3 Bb4+/–) 18...Rfc8 19.Ndc6 (19.Nb7 Ra1 (worse is 19...Qb7 20.Ra8 Na8 21.Nc6+/–) 20.Nc6 A) worse is 20...Qb7 21.Ra1 (worse is 21.Ba1 Nfd7+=) 21...Bf8 22.Bf6 gf6 23.Qb2 Rc6 24.bc6 Qc6 25.Rb1+–; B) 20...Rf1 21.Bf1 Qb7 22.Qc5 Re8 23.Bf6 gf6=) 19...Bc6 20.Nc6 Qf8 21.Bf6 gf6 22.Qb2 Qg7 (22...Qh6 23.h3 f5 24.Qc3+=) 23.Rfc1 Bd6 (23...Ra1 24.Qa1 Ra8 25.Qc3+/–) 24.Qd4 (24.Ra8 Ra8 25.Qd4 f5+/–) 24...Ra1 25.Ra1 f5 26.g3 (26.Ra6 Qd4 27.Nd4 Rc1 28.Bf1 Bc7+/–) 26...Qd4+= 27.Nd4 Be5 28.Ra6 Bd4 29.ed4 Rb8 30.Kf1 Kf8 31.Ke1 Ke7 32.Kd2 Nc4 33.Bc4+/– dc4 34.b6 Kd6 35.Kc3 f4 36.gf4 Kd5 37.Ra5 Kc6 38.Rf5 Kb6 39.Rf7 Rg8 40.Rh7 Rg2 41.Re7 Rf2 42.Re4 Kb5 43.Re5 Kc6 44.Kc4 Rf4 45.Re6 Kd7 46.Rh6 Rg4 47.h4 Rf4 48.h5 Rh4 49.Kd5 Ke7 50.Ke5 Kf7 51.d5 Rh1 52.Kd6 Kg7 53.Rg6 Kf7 54.Rg5 Kf6 55.Rg2 Kf7 56.Kd7 Kf6 57.d6 Rh5 58.Re2 Ra5 59.Kc8 Ra8 60.Kb7 (60.Kb7 Ra1 61.d7+–) 1–0. Morriss,P (2005) – Courtney,John (2130), e2e4 Dublin Easter Masters, 2012.

11.a4 e5 12.cd5 cd4 13.ed4 (13.Nc4 de3 14.Ne3 Rfc8+=) 13...e4+= (13...Nd5?! 14.de5 Bb4 15.Rc1+=) 14.Nh4 g6 (worse is 14...Bd5 15.Nf5 Qe6 16.Nd6 Qd6 17.Ba3+/–; worse is 14...Nd5 15.Nf5 Qf6 16.Nd6 (worse is 16.Ne4 Bh2 17.Kh2 Qf5+=) 16...Qd6 17.Ne4+/–) 15.Nc4 Rfc8 (worse is 15...Bd5 16.Nd6 Qd6 17.Ba3+/–) 16.g3 Nd5 17.Nd6 (17.a5 ba5 18.Na5 N7f6+=) 17...Qd6–/+ 18.Qd2 Re8 (18...Qb4 19.Qb4 Nb4 20.Rab1–/+) 19.Ng2= N7f6 (19...a5 20.Rfc1=) 20.Ne3 Rac8 (20...a5 21.Nc4 Qb4 22.Qd1=) 21.Ba3 (21.a5 Qd7=) 21...Qe6 22.Rfc1 Ne3 23.fe3 Rc1 24.Rc1 Qb3 25.Qc3 (25.Rc3 Qa4 26.Bc1 Rc8=) 25...Qa4 26.Ra1 (26.Qb4 Qb4 27.Bb4 Nd5+=) 26...Nd5+= 27.Qb2 Ne3 28.Qc3 (28.Bd6!? Qc2 29.Qc2 Nc2 30.Ra7 Nd4 31.Rb7 Ne2 32.Kg2+=) 28...Nd5 29.Qb2 Qa5 30.Bc4? e3–+ 31.Qe2 Qd2 32.Rd1 Qe2 33.Be2 Nc3 34.Re1 Ne2 35.Re2 Bd5 36.Bc1–/+ Bc4 37.Re3 Re3 38.Be3 Bb5 39.d5 Bc4–+ 40.d6 Kf8 41.Kf2 Ke8 42.Bf4 Kd7 43.Ke3 Be6 44.Kd4 a5 45.Ke5 b5 46.Bd2 b4 47.Be3 Kc6 48.h4 a4 0–1. Wolf – Czikuhs, corr JBDDR'2164, 1981.

11.a4 e5 12.de5 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Bf3 Rad8 (15...a6 16.cd5 Bd5 17.Rb1=) 16.Qc2 Rfe8 (16...Rd7 17.a5=) 17.cd5 (17.a5 Rd7=) 17...Bd5 (17...Nd5 18.Rfd1=) 18.Nc4 (18.a5 Bf3 19.Nf3 Qe4=) 18...Qe6 19.Bd5 ½–½. Schuchardt,Wolfgang (1690) – Czuchnicki,Adam (2150), Germany, 2005.

11.Rb1 a6 12.dc5 Nc5 13.ba6 Ba6 14.Bf6 Qf6 15.Rb6 Rfd8 =.

11.Qb3 Rfd8 12.Rfc1 (12.Ne5 cd4 13.ed4 Bb4+=) 12...Rac8 (12...e5 13.cd5 ed4 14.Bc4=) 13.a4 (13.Qa4 cd4 14.ed4 Ne4=) 13...a5 (13...e5!? 14.de5 Ne5=) 14.ba6= Ba6 15.a5 Rb8 16.ab6 Rb6 17.Qc2 Rdb8 18.Ba3 cd4 (18...g6 19.dc5 Bc5 20.Bc5 Nc5 21.cd5 Be2 22.Qc5 Qc5 23.Rc5 Nd5 24.Ne5=) 19.Bd6 Qd6 20.ed4 (20.Nd4 Rc8=) 20...dc4 21.Nc4 Bc4 22.Qc4 h6 23.h3 Nd5 24.Ra7 Nf4 25.Bf1 Nf6 (25...Rb1 26.g3 Rc1 27.Qc1+=) 26.Ne5+= Rf8 27.Qc7 (27.g3 N4d5+=) 27...Qc7= 28.Rcc7 (28.Rac7 N4d5 29.Rc8 g6=) 28...Rb1 29.f3 (29.Nf7? Ne2 30.Kh2 Rf1–+; 29.Rf7?? Rf7 30.Rf7 Ne2 31.Kh2 Rf1–+) 29...Ne2 (29...N6d5 30.Rcb7 Ne2 31.Kf2 Rb7 32.Rb7 Nd4 33.Bc4=) 30.Kf2 Nd4 31.Nf7 Ne8 32.Rc8 Rf7 (32...Rb2 33.Kg1 Nf6 (worse is 33...Rf7 34.Re8 Rf8 35.Ree7+/–) 34.Rf8 Kf8=) 33.Re8+/– Rf8 34.Ree7 Rb2 35.Kg1 Nf5 36.Re6 Rb1 37.Kf2 Rb2 38.Be2 (38.Re2!? Rb6 39.g4+/–) 38...Nd4+= 39.Ree7 Re2 40.Re2 Ne2 41.Ke2 Re8 42.Kf2 Re6 43.Ra8 (43.h4 g6+/–) 43...Kf7+= 44.Ra7 Kf6 (44...Kg8 45.h4+/–) 45.h4+= h5 46.Ra5 g6 47.g4 hg4 48.fg4 Kf7 49.Kf3 Kg7 50.Kf4 Kf6 51.Ra7 Rb6 52.Ra4 Rb5 53.Ra6 Kf7 54.Rc6 Kg7 55.Re6 Kf7 56.Rd6 Kg7 57.Re6 Kf7 58.Re4 Kf6 59.g5 Kf7 60.Ra4 Kg7 61.Kg4 Rb7 62.h5 (62.Rc4 Ra7+=) 62...gh5= 63.Kh5 Rc7 64.Ra6 Rb7 65.Rg6 Kh7 66.Rc6 Kg7 67.Rc5 Rd7 68.g6 Rb7 69.Rf5 Rc7 70.Kg5 Rb7 71.Rc5 Ra7 72.Kf5 Re7 73.Rc6 Ra7 ½–½. Alessandro,Sergio (1665) – Kutchoukov,Daniel, 5th Science Park Amsterdam Open, 2015.

11.Rc1 a6 12.ba6 Ba6 13.Qb3 +=.

11.Rc1 Rac8 12.Qa4 Bb8 13.Qc2 (13.Rfd1 Rfd8=) 13...h6 (13...cd4 14.Nd4 Rfd8 15.Rfd1=) 14.h3 (14.Qa4 Rfd8=) 14...Rfe8 (14...cd4 15.Nd4 Rfd8 16.Rfd1=) 15.a4 (15.Rfd1 cd4 16.Nd4 Red8=) 15...e5 (15...cd4 16.Nd4 Red8 17.Rfd1=) 16.dc5 (16.de5 Ne5 17.Rfd1 dc4 18.Be5 Be5 19.Ne5 Qe5 20.Nc4 Qg5=) 16...Nc5 17.Nh4 (17.Rfd1 Qe6=) 17...Nfe4 18.Nf5 (18.Ne4 de4 19.Nf5 Qf6=) 18...Qg5–/+ 19.Ne4 Ne4 (19...Qf5?! 20.Nc5 Qc2 21.Rc2 Rc5 22.Bf3=) 20.f3 (20.g4 dc4 21.f4 ef4–/+) 20...Ng3 (better is 20...Nd6!? 21.e4 de4 (< 21...Nc4 22.Bc4 Rc4 23.Qd3 Ra4 24.Qb3=+) 22.Nd6 Bd6–+) 21.Ng3=+ Qg3 22.Qd2 dc4 (22...d4!? 23.e4 Re6=+) 23.Bc4= Rcd8 (23...Red8 24.Qf2 Qg6 25.Rc3=) 24.Qf2 (24.Qe1 Qg5=) 24...Qg5 25.Rcd1 Rc8 (25...Bd6 26.Rd3=) ½–½. Gross,Wilhelm – Merten,Rainer, xxvi/04, 1994.

11.Rc1 Rac8 12.Qa4 cd4 13.Bd4 e5 14.Bb2 =+.

11.Rc1 Rac8 12.Ne5 (12.Qa4 Rc7=) 12...Rfe8 (12...cd4 13.ed4 dc4 14.Ndc4=) 13.Bh5 (13.Qa4!?=) 13...Nh5=+ 14.Qh5 Ne5 (14...cd4 15.ed4 (15.Bd4? Be5 16.Be5 g6–+) 15...Red8 16.cd5=+) 15.de5 Bc7 16.Nf3 (16.Rfd1 Ra8=+) 16...Rcd8 17.Ng5 (17.Rfd1 a6=+) 17...h6 18.Nf3 Rd7 (18...a6 19.a4–/+) 19.a4 (19.cd5 Bd5 20.Qg4 Red8=+) 19...Red8 20.Qg4 (20.cd5 Bd5 21.Bc3 Bb3=+) 20...Rc8 (20...d4 21.ed4 Bf3 22.Qf3 cd4 23.Rfe1–/+) 21.h3 (21.cd5 Bd5 22.Rfd1 Rcd8=) 21...Bd8 (21...a5 22.cd5 Bd5 23.Bc3=+) 22.Kh1 (22.cd5 Bd5 23.Rfd1 Bb3=) 22...Qe8 (22...a6 23.Rfd1=+) 23.Rfd1 Be7 (23...a6=+) 24.Qg3 (24.cd5 Bd5 (24...ed5?? 25.e6 Qf8 26.ed7+–) 25.Nd2 a6=) 24...Rcd8 (24...dc4 25.Rd7 Qd7 26.Bc3–/+ (26.Rc4? Qd1 27.Kh2 Qb3–+)) 25.Nh2 (25.Kh2!?=+) 25...dc4–/+ 26.Rd7 Rd7 27.Ng4 Kh7 28.Qf4 Bd5 29.e4? (better is 29.Rc3–/+) 29...Bg5–+ 30.Qf3 Bc1 31.Bc1 Bb7 32.Bh6 (32.Qe2–+) 32...Qd8 (32...f5 33.ef6 gh6 34.Ne5–+) 33.Bg7? (33.Qf4 Qh8 34.Qg5 Rd1 35.Kh2=) 33...Kg7 34.Nf6 Kf8?? (better is 34...Rd3 35.Qg4 Kf8 36.a5–+) 35.Qg4?? (better is 35.Nh7 Ke8 36.Nf6 Ke7 37.Nd7 Kd7 38.Qf7 Qe7 39.Qf4–/+) 35...Ke7 (better is 35...Rd1 36.Kh2 c3–+) 36.Ng8 =. Gross,Wilhelm – Merten,Rainer, xxv/30, 1994.

11.Rc1 Rad8 12.Qa4 cd4 13.ed4 Ra8 =.

11.Rc1 Rad8 12.Qb3 Ne4 (12...cd4 13.ed4 Nh5 14.g3=) 13.Rfd1 (13.Ne4 de4 14.Ne5 cd4 15.Nd7 Rd7 16.ed4 Qg5=) 13...Nd2 (13...cd4 14.Nd4 Bh2 15.Kf1–/+) 14.Rd2 cd4 15.Nd4 Nc5 16.Qc2 (better is 16.Qd1!?=) 16...Ne4–/+ 17.Rdd1 Bh2 18.Kh2 Qh4 19.Kg1 Qf2 20.Kh1 (20.Kh2 e5 21.Bf3 Qh4 (< 21...ed4 22.Qf2 Nf2 23.Rd4+=) 22.Kg1 ed4 23.Rd4 Qg5–/+) 20...e5 21.Bf3 ed4 22.Be4 Qh4 23.Kg1 de4 24.Rd4 (24...Qg5 25.Qe2–/+). Hecht,Hans – Clemens,Christian, Berlin, 1955.

11.Rc1 e5 12.de5 (12.cd5 Nd5 13.dc5 Nc5+=) 12...Ne5 13.Qb3 (13.cd5 Nd5 14.Qb3 Rfd8=) 13...Rad8 (13...a6 14.ba6 Ra6 15.Rfd1=) 14.a4 (14.Rfd1 Rd7=) 14...Rd7 (14...Rfe8 15.Rcd1+=) 15.cd5 (15.Ne5 Be5 16.Be5 Qe5 17.cd5 Bd5+=) 15...Bd5 16.Qc3 Ng6 (16...Nf3 17.Bf3 Bf3 18.gf3–/+) 17.Bc4 (17.Rfd1 Rfd8+=) 17...Bc7 18.Bd5 Rd5 19.Nc4 (19.Qc2 Rfd8+=) 19...Rfd8 20.Rfe1 (20.a5 Qe4+=) 20...Rd3 (20...Qe6 21.Ra1–/+) 21.Qc2+= Ne4 (21...R3d7 22.e4+=) 22.Red1 (22.Bd4! cd4 23.Qd3 de3 24.Qe3+=) 22...Qd7 (22...R3d5 23.Rd5 Rd5 24.Rd1+=) 23.Rd3 (23.Re1 f5+=) 23...Qd3+= 24.Qd3 (24.g3 Qd5 25.Qe2 h5+=) 24...Rd3 25.Be5 Ne5 26.Nfe5 (26.Nce5? Ra3–+) 26...Be5 27.Ne5 Ra3 28.f3 (28.Rd1 h6 29.f3 f6+=) 28...Nc3 (better is 28...Nf6+=) 29.Rc3?? (better is 29.Nc4+=) 29...Rc3–+ 30.Nc6 Re3 31.Na7 (31.Kf2 Rd3–+) 31...f5 (better is 31...c4 32.Kf2 Rd3 33.Ke2–+) 32.Nc6 (32.Kf2 Re8–+) 32...c4 33.Kf2 f4 0–1. Nicklich,Wolfgang – Olsson,Sture, corr, 1980.

11.dc5 bc5 12.Qc2 Rfd8 =.

11.dc5 Nc5 12.cd5 Bd5 =.

11.d4 Rfd8 12.Bd3 =.

11.cd5 ed5 12.dc5 bc5 =.

11.cd5 ed5 12.dc5 Nc5 =.

11.Ne5 Rac8 12.a4 Bb8 (12...cd4 13.ed4 Bb4 14.a5+=) 13.a5= Ne4 (13...cd4!? 14.ed4 Ne5 15.de5 Nd7 16.ab6 ab6=) 14.Ne4 (14.Nd7 Qd7 15.Ne4 de4 16.ab6 ab6 17.dc5 Qc7+/–) 14...de4 (14...Ne5!? 15.de5 de4 16.ab6 ab6+=) 15.Nd7+/– Qd7 16.ab6 ab6 17.dc5 Qc7 18.Qd6 (18.g3 bc5 19.Qb3 Qe7+/–) 18...Qc5 (18...Qd6 19.cd6 Bd6 20.Ra7+/–) 19.Qc5 bc5 (19...Rc5? 20.Bd4 Bd6 21.Rfd1+–) 20.Rfd1 Rfd8 21.Bc3 Bc7 22.g3 f6 23.Kf1 Bb6 24.Ke1 Kf7 25.Rd8 Rd8 26.Rd1 Rd1 27.Kd1 Ke7 28.Kc2 Kd6 29.Kb3 Kc7 30.Bg4 Kd6 31.Ka4 f5 32.Be2 g6 33.Ba5 Kc7 34.Bc3 Kd6 35.Kb3 Ba8 36.Bf6 e5 37.Kc2 Ke6 38.Bg5 Bb7 39.Kd2 Ba5 40.Kd1 Ba8 41.Bh6 Kf7 42.g4 Bb7 43.gf5 gf5 44.Bh5 Ke6 45.Ke2 Bc7 46.Kf1 Bd6 47.Kg2 Kf6 48.Kg3 Ke6 49.Kh4 Bc8 50.Be8 Bb7 (50...Ke7 51.Bh5=) 51.Bg5 (51.Bc6 Bc6 52.bc6+/–) 51...Bf8? (better is 51...Bc7!?+=) 52.Bd8+– f4 53.Kg5 f3?? (better is 53...Bd6+/–) 54.Bc6+– Bc6 (54...Bc8 55.Be4 Kd7 56.Bf6 h6 57.Kg6+–) 55.bc6 Kd6 56.c7 Kd7 57.Kf5 Bg7 58.Ke4 Kc8 59.Kf3 Kd7 60.Ke4 h5 61.Kd5 h4 62.Bh4 Kc7 63.Kc5 Kd7 64.Kd5 1–0. Raue,Thorsten (1820) – Steens,Rudolf (1815), Muensterland Verbandsklasse–B, 2008.

11.Ne5 Rac8 12.Qa4 cd4 13.ed4 Ne4 14.Ne4 de4 =.

11.Ne5 Rac8 12.Bf3 Rfd8 (12...cd4 13.ed4 Bb4 14.a3 Bd2 15.Qd2 Ne5 16.de5+=) 13.Qe2 (13.cd5 A) worse is 13...Bd5 14.e4 Ne5 15.de5 Be5 16.Be5 Ne4 17.Be4 Be4 18.Bc3+/– (worse is 18.Ne4 Rd1 19.Rad1 f6+=); B) 13...Nd5?! 14.Nc6 Bc6 15.bc6 Rc6 16.e4=; C) 13...ed5 14.Nec4 Bc7+=) 13...Nf8 (13...Ne4 14.cd5 ed5 15.Ne4 de4 16.Bg4 Be5 17.de5+=) 14.g3 (14.dc5 bc5 15.Rad1 Qc7=) 14...Ng6 15.Bg2 Bb8 (15...cd4 16.ed4 Bb4 17.Rfd1=) 16.f4 (16.Rac1 Bd6+=) 16…Ne4… ½–½. Hecht – Achenbach, Berlin, 1955.

11.Ne5 Rfc8 =.

11.Ne5 Ne8 12.Nc6 Bc6 13.bc6 Ndf6 =.

11.Ne5 Ne8 12.Ndf3 f6 13.Nc6 Qf7 14.cd5 ed5 15.dc5 bc5 16.a4 (16.Bd3 a6 17.a4 Qh5=) 16...Nc7 (16...Bc6!? 17.bc6 Nb8=) 17.Rc1 Nb8 18.e4 (better is 18.Nb8 Rab8 19.Ba3+=) 18...Nc6–/+ 19.bc6 Bc6 20.ed5 Bd5 (20...Qd5?? 21.Bc4 Qc4 22.Rc4+–; 20...Nd5?! 21.Nd4 Ba4 22.Qa4 cd4 23.Bd4=+) 21.Ba3 Rad8 22.Nd2 Qg6 23.g3 Ne6 24.Bf3 Bf3 25.Qf3 Kh8 (25...Bf4 26.Qb3 Rfe8 27.Rce1–+) 26.Nb3–/+ Rfe8 27.Rc4 Ng5 28.Qc3 Nh3 29.Kh1 Qf5 (29...Be5 30.Qc1 Qd3 31.Kg2–+) 30.Kg2? (better is 30.f3=+) 30...Ng5–+ 31.Rh4? (better is 31.Bc5 Bg3! 32.hg3–+) 31...Qd5 32.f3 Re2 33.Rf2 (33.Kh1 Be5 34.Qc5 Qb3 35.Rh5–+) 33...Be5 34.Nd4 (34.Rc4 Bc3 35.Rc3 Qe6–+) 34...Rf2 35.Kf2 Bd4 36.Rd4 Qd4 (better is 36...cd4 37.Qd3 Qa2 38.Qe2 Qa3 39.Kg2–+) 37.Qd4 cd4 38.f4 (38.h4 Nf7 39.f4 Nd6 40.Bd6 Rd6–+) 38...d3 39.Ke1 (39.Bb4 d2 40.Bd2 Ne4 41.Ke3 Nd2 42.g4–+) 39…Nf3 (40.Kd1 Re8–+) 0–1. Bartle,Georg (1680) – Daniel,Wolfgang (1930), Wch Seniors, 2003.

11.a4 Rfd8

12.a5 ba5 13.Ra5 dc4 (13...Nb6 14.cd5 cd4 15.Bd4 Nfd5 16.Qa1+=) 14.Nc4 Bc7 15.Ra1 a6 (15...e5 16.Na5 Ba5 17.Ra5 cd4 18.ed4=) 16.ba6 Ra6 17.Ra6 Ba6 18.Qc2 (18.Qa4 Bb7=) 18...Bb7 19.Ra1 cd4 (19...Be4 20.Qc1=) 20.Bd4 (20.Ba3 Qe8 21.Nd4 Ne5=) 20...e5 21.Bb2 Be4 22.Qc3 Nd5 (22...Rb8 23.Ra7 (23.Nfe5 Ne5 24.Ne5 Rb2 25.Qb2 Be5–/+) 23...Qc5 24.Qa3 Qa3 25.Ra3=) 23.Qc1 (23.Qa3 Qa3 24.Na3 f6+=) 23...Bb8 (23...Bf3 24.Bf3 e4 25.Be2=) 24.Ra5+= Rc8 (24...Bc7 25.Rb5+=) 25.Nfd2 N5f6 (25...N5b6 26.Ne4 Nc4 27.Ra3+=) 26.Ne4+/– ½–½. Bothe – Fritz,Harry, corr SOK–95–111, 1995.

12.a5 ba5 13.Nb3 a4 (13...dc4 14.Na5 Nb6 15.Bc4 (worse is 15.Nc4 Bf3 16.gf3 Nc4 17.Bc4 cd4 18.Bd4 Be5–/+) 15...Nc4 16.Nc4 cd4 17.Nd6 de3 18.Ba3 ef2 19.Kh1+=) 14.Na5 Nb6 15.Nb7 (15.Qc2!?=) 15...Qb7–/+ 16.Qc2 Nfd7 (16...Rdc8 17.dc5 Bc5 18.Bf6 gf6 19.Bd3–/+) 17.Ng5 (17.cd5 Qd5 18.e4 Qb3 19.Qb3 ab3+=) 17...g6 18.h4 (18.f4 cd4 19.Bd4 A) 19...dc4?! 20.Bf3 (20.Bc4 Rdc8 21.Ra4 Na4–+) 20...Qc8 21.Ba8 Qa8 22.Ne4=; B) 19...Bc5 20.Bc5 Nc5 21.cd5 Rac8 (worse is 21...Qd5 22.Rad1 Qf5 23.e4 Ne4 24.Rd8 Rd8 25.Ne4+/–) 22.de6 Ne6–/+) 18...Nc4 (18...Rdc8 19.Qd2–/+) 19.Bc4+= dc4 20.h5 (20.Ra4 Qb5 21.dc5 c3 22.cd6 Qb2+= (worse is 22...cb2 23.Rb1=)) 20...Re8 (better is 20...cd4 21.hg6 hg6 22.Ne6 Rdb8 (22...fe6?! 23.Qg6 Kf8 24.Qh6 Ke7 25.Qg5 Ke8 26.Qh5 Ke7 27.Qg5 Kf7 28.Qh5 Kg7 29.Qg5 Kf7 30.Qh5 Kf6 31.Qh6 Ke7 32.Qg5=) 23.Nd4 a6–/+) 21.hg6= hg6 (worse is 21...fg6 22.dc5 Qb5 23.cd6+–) 22.dc5 Qb5 (22...Nc5 23.Qc4 Qe7 24.Qh4=) 23.Nf7 (23.cd6 Qg5 24.Ra4 Nb6+=) 23...Kf7 24.cd6 Ne5? (better is 24...Qb3 25.Qd2 Qd3+=) 25.Rfd1+– Nd7 26.Rd4 (worse is 26.Ra4 Qb3 27.Rc4 Qc2 28.Rc2 e5+/–) 26...e5 27.Rg4 Re6+= 28.Ba3 Rc8 29.Rb1 Qc6 30.f4 e4 31.Rh4 Nf6 32.Qc3 Rd8 33.Qa5 Red6= 34.Bd6 Rd6 35.Rb5 a3? 36.Rc5+– Qb6 37.Rc7 Rd7?? 38.Rd7+– Nd7 39.Qd5 Kf6 40.Qg5 Ke6 41.Rh7 (41.Rh7 Qe3 42.Kh2+–) 1–0. Nathe,Emil – Lorenzen,Pl, corr, 1966.

12.a5! Rab8.

12.cd5 Bd5 13.Nc4 Bc4 14.Bc4 cd4 15.Nd4 Ne5 +=.

12.cd5 Nd5 13.Nc4= Bc7 14.a5 Nb4 15.Qb3 ba5 (15...cd4 16.Bd4 Be4 17.Rfc1+=) 16.Na5+= Bd5 17.Qc3 f6 18.Nb3 (better is 18.dc5 Qc5 19.Nd4+=) 18...cd4? (better is 18...Bd6 19.Rfc1 Rdc8=) 19.Qc7+– Bb3? (19...Rdc8 20.Qa5 d3 21.Bd1+–) 20.Ba3 (20.Nd4 Rdc8 21.Qa5 Nc2 22.Nb3 Na1 23.Qa1 e5+–) 20...a5 (better is 20...d3 21.Bd1 Bd5+–) 21.ba6 d3 22.Bd1 (22.Bd3 Qc5 23.Qb7 Qc3+–) 22...Bd5 (22...Bd1 23.Rfd1 Na6 24.Be7 Nc7 25.Bd8 Rd8 26.Rd3+–) 23.a7 Na6 (23...Qf8 24.e4! Be4+–) 24.Be7 Nc7 25.Bd8 Rd8 26.Nd4 (26.Ba4 Nb6+–) 26...Nb6 (26...Ra8 27.Bg4 Nc5 28.Rfc1+–) 27.Rb1 Nca8 28.Bb3 Kf7 29.e4! Bb3 30.Nb3 Nc4 31.Rfd1 Rd7 32.Nc5 Ra7 33.Nd3 Nc7 34.Nc5 Ne8 35.Rb7 Rb7 36.Nb7 Ke7 37.Rd4 Ncd6 38.Nd6 Nd6 39.Ra4 e5 40.Ra7 Kf8 41.f3 Nb5 42.Rd7 Kg8 43.h4 h5 44.Kf2 Kh7 45.Ke3 Kh6 46.f4 1–0. Wolf – Mohaupt, corr JBDDR'2156, 1981.

11.a4 Rfe8

12.a5 ba5 13.Ra5 Bc7 14.Ra1 =.

12.a5 ba5 13.Nb3 dc4 14.Na5 c3 15.Bc3 Ne4 +=.

12.a5 Rab8 13.a6 (13.ab6 ab6 14.Ra7 Rec8=) 13...Ba8= 14.Qc2 (14.Rc1 Rbc8=) 14...dc4 (14...cd4 15.Nd4 Rbc8 16.Rac1=) 15.Nc4 Bc7 (15...Be4 16.Qd2=) 16.Rfd1+= Rbc8 (16...Be4 17.Bd3 Bf3 18.gf3 cd4 19.Bd4=) 17.Ba3 (17.Nfe5 cd4 18.Ba3 Qd8 19.ed4 Nd5=) 17...Bb8 (17...e5 18.dc5 bc5 19.Nfd2=) 18.Qb2 (18.Rac1 Red8+=) 18...Ne4 (18...Bd5 19.Rac1=) 19.Rac1 Bd5 20.Ncd2 (20.Bd3 Red8=) 20...Nd2 21.Rd2 (21.Nd2 f5=) 21...Bd6 22.Rdc2 (22.dc5 Nc5 23.Bc5 Bc5=) 22...f6 (22...e5 23.dc5 bc5 24.Nd2=) 23.dc5 (23.Nd2 f5=) 23...Nc5 (23...bc5 24.Rd2=) ½–½. Suess,Stefan – Groeber,E, corr, 1986.

12.Re1 a6 13.Bd3 =.

12.Re1 e5 13.cd5 (13.de5 Ne5 14.Be5 Be5 15.Ne5 Qe5=) 13...e4 (13...Bd5 14.de5 Ne5 15.a5=) 14.Nh4 g6 (14...Bd5 15.Nf5 Qe6 16.Nd6 Qd6 17.a5=) 15.Nc4+= Bd5 (15...Rad8 16.dc5 bc5 17.Nd6 Qd6 18.Qc2=) 16.Nd6 Qd6 17.dc5 bc5 18.Qc2 (18.a5 Red8=) 18...Qe6 19.g3 Rac8 20.Ra3 Ne5 21.Ng2 g5 22.Be5 Qe5 23.Rc3 Nd7 24.Rd1 Red8 25.Ne1 Ba8 (25...Qe6 26.f3=) 26.Bg4 (26.Bc4 Nb6 27.Rd8 Rd8=) 26...f5 27.Be2 Kg7 28.f4 Qf6 (28...gf4 29.ef4 Qc7 30.Ng2+=) 29.fg5+/– Qg5 30.Bf1 Qe7 31.Ng2+= Rf8 32.Nh4 Ne5 33.Bh3 Nf3 34.Nf3+– ef3 35.Bf5 f2 36.Qf2 Qe5 37.Rd7 Kh8 38.Rh7 Kg8 39.Qf4 Qf5 40.Qf5 Rf5 41.Ra7 Rcf8 42.Rc1 Be4 43.Re7 Bd3 44.b6 c4 45.Rc7 Rf2 46.b7 Be4 47.R7c4 Rg2 48.Kh1 Rc2 49.Kg1 Rg2= ½–½. Merten,Rainer – Fritz,Harry, corr 3GMM–55, 1995.

11.d4 e5

12.de5 Ne5 13.Qc2 Nc4 14.Nc4 dc4 15.Bc4 a6 =.

12.de5 Ne5 13.Qc2 Rad8 14.Rad1 Neg4 (14...Nc4 15.Nc4 dc4 16.Nd2=) 15.Bf6 (15.cd5 Bd5 16.Bc4 Rfe8=) 15...Nf6 16.cd5 Bd5 17.Nc4 (17.Bc4 Bb7=) 17...Bb8 (17...Bc7 18.Bd3=) 18.Nfd2 (18.Bd3 Rfe8=) 18...Ne4 19.Bd3 Nf6 (19...f5 20.Nf3=) 20.e4 Ba8 (20...Bb7 21.f4 Qd7 22.Nb2=) 21.f4 h6 (21...Qd7 22.Nb2 Qg4 23.g3=) 22.e5+= Ne8 (22...Nd5 23.Bh7 Kh8 24.Be4+=) 23.Ne3 Nc7 24.a4 Ne6+= 25.Nf5 Qb7 26.Rf3 Nd4 27.Nd4+= Rd4 28.Nb3 Rdd8 29.Nc1 Qe7+= 30.Rf2 f6= 31.Bc4 Kh8 32.e6 Be4 33.Rd8 Bc2=+ 34.Rd7 Qe8 35.Rc2 Qg6 36.e7 Re8–/+ 37.Rd8 Bf4 38.Re2 (38...Bc1 39.Re8 Qe8 40.Bf7 Qf7 41.e8Q Qe8 42.Re8 Kh7 43.Re7+=). Nemec,Zdenek – Zika,Premysl, CSR CF, 1989.

12.de5 Ne5 13.Qc2 Rfd8 14.Be5 Be5 15.Ne5 Qe5 16.Bf3 =.

12.de5 Ne5 13.Be5 Be5 14.Ne5 Qe5 15.cd5 Rfd8 =.

12.Ne5 Ne5 13.de5 Be5 14.Be5 Qe5 15.cd5 Rfd8 =.

12.Nh4 Qe6

13.cd5 Qd5?? 14.Bc4 ed4 15.Bd5 Nd5 16.Nf5 +–.

13.cd5 Nd5 14.Bg4 Qe8 15.Nf5 +=.

13.e4 ed4 14.ed5 Qe7 =.

13.cd5 Bd5=+

14.a4 e4 15.f3 ef3 16.Bf3 Qe3 17.Kh1 –/+.

14.de5 Be5 15.Be5 Ne5 =.

14.a4 Rfe8

15.Re1 Rac8 16.Rc1 cd4 17.ed4 e4 18.Bf1 –/+.

15.Re1 Rac8 16.Rc1 e4 17.g3 (17.Nc4 Be7 18.f4 ef3 19.Nf3 Ne4=+) 17...cd4 (17...Red8 18.f3–/+) 18.Bd4 Bb4 (18...Rc1 19.Qc1 Be5 20.Ng2=+) 19.Rf1 (19.Ng2!?=+) 19...Nc5 20.Bc5 Bc5 (20...bc5 21.Qc2–/+) 21.Ng2 Bd6 22.Ne1 (22.Rc8 Rc8 23.f3 Rd8–/+) 22...Bb4 (22...Rc1 23.Qc1 Rc8 24.Nc2–/+) 23.Nc2 Bd2 (23...Bc5!?–/+) 24.Qd2=+ Bb3 (better is 24...Rc5!?=+) 25.Nd4+/– Rcd8 (better is 25...Qd5 26.Qb2 Bc4+/–) 26.Rc6?? (better is 26.Qb4 Rd4 27.ed4+–) 26...Qd5? (better is 26...Qe7=) 27.Qb4 (27...Ba4 28.Qa4+–; 27.Nb3?! Qd2 28.Nd2 Rd2=) 1–0. Gross,Wilhelm – Merten,Rainer, xxvi, 1995.

15.Re1 Rac8 16.e4!? Ne4 17.Bg4 Nf2 18.Kf2 +/–.

15.Re1 e4 16.dc5 bc5 17.f4 –/+.

15.de5 Be5 16.Be5 Ne5 17.Qc2 =.

11.Ne5 cd4

12.ed4 a6 13.ba6 Ba6 14.Re1 =+.

12.ed4 dc4 13.Ndc4 Rfc8 (13...Rfd8 14.Nc6 Bc6 15.bc6=+) 14.Bf3 (14.Qa4 a6=) 14...Nd5 15.Nd6 Qd6 16.a4 Ne5 (16...N7f6 17.Qb3=) 17.de5 Qb4 18.Ba3 (18.Rb1 Rc4=) 18...Qf4 (18...Qh4 19.Rc1=) 19.Bd6 (19.Bb2 Rc4=) 19...Rc4 (19...Nc3 20.Bb7 Nd1 21.Rfd1=+) 20.g3= Qf5 21.Bg2 (21.Ra3!?=) 21...Nc3–/+ 22.Qb3?? (22.Qd2 Bg2 23.Kg2 Rac8–/+) 22...Ne2 23.Kh1 Bg2 24.Kg2 Rac8 (better is 24...Rc3 25.Qc3 Nc3–+) 25.Qf3= Qc2 (25...Qf3 26.Kf3 Nc3 27.Rfc1=) 26.Qb7 Nc3 27.Qa7 Qe4 28.f3 Qd4 (28...Qd3 29.Qb7=) 29.Qb7 (better is 29.Qd7=) 29...Nd5–+ 30.Kh3 (30.Kh1 Rc2 31.Rad1–+) 30...Qd2 31.f4 Rc2 32.Rh1 (32.Qc8 Rc8 33.Rad1 Nf4 34.Rf4 Qd1–+) 32...Qe2 33.Be7 (33.Qc8 Rc8 34.Rac1 Nf4 35.gf4 Qf3 36.Kh4 Qf4 37.Kh3 Rc1 38.Rc1 Qc1 39.Kg3–+) 33...Ne7 (33...Nf4 34.gf4 Qh5 35.Kg3 R8c3 36.Qf3 Rf3) 34.Qe7 (34.Qc8 Nc8 35.Kh4 g6 36.g4 Qf2 37.Kg5 h6 38.Kh6 Qh4) 34...h5 35.Qh4 (35.Qg5 Qg2 36.Kh4 Qh2 37.Rh2 Rh2) 35…Qg2# 0–1. Gross,Wilhelm – Merten,Rainer, xxvi/08, 1995.

12.ed4 Rfc8 13.Rc1 a6 14.a4 (14.ba6 Ba6 15.Qb3 Rc7=+) 14...ab5=+ 15.ab5 Bb4 16.f4 Ra2 17.Qb3 Rca8 18.Ndf3 Rb2 (18...Ne5 19.fe5 Ne4 20.cd5 Bd5 21.Bc4=) 19.Qb2 Ba3 20.Qb1 (20.Qd2 Bc1 21.Rc1 dc4 22.Bc4 Bf3 23.Nf3 Qd6=) 20...Bc1 21.Rc1 dc4 22.Nc4 (22.Ng5 h6 23.Ngf7 Rf8=) 22...Nd5=+ 23.g3 Rc8 24.Nfe5 N7f6 (24...f6 25.Ng4=) 25.Bf3 (25.f5 ef5 26.Qf5 Qe8=) 25...Rc7 (25...Qd8 26.Qb2=) 26.f5 ef5 27.Qf5 Ne3 (27...Qd8 28.Re1=) 28.Qd3 Nc4 (28...Nfd5 29.Be4 g6 30.Bf3=) 29.Rc4+= Rc4 30.Qc4 Bf3 31.Nf3 Qe3 32.Kg2 g6 ½–½. Rudbeck,Joergen – Oksanen,Yrjoe, corr DEN–FIN, 2000.

12.ed4 Rfc8 13.Bf3 a6 14.a4 =+.

12.ed4 Rfc8 13.Bf3 Rc7 14.a4 Rac8 15.Re1 (15.Qe2 dc4 16.Bb7 Rb7 17.Ndc4 Nb8=) 15...Bb4=+ 16.Re3 (16.Rc1 Ne4 17.Be4 de4=) 16...Bd2–/+ 17.Qd2 dc4 (17...Ne4 18.Be4 de4 19.Rc3=+) 18.Bb7 (18.Ba3 Qe8 19.Nc4 Rc4 20.Bb7 R8c7=) 18...Rb7=+ 19.Nc6 Qe8 20.Qc2 (20.Rc1 Nd5 21.Rg3 f6=+) 20...Nb8 (20...Nd5 21.Rh3 h6–/+) 21.d5? (better is 21.Nb8!? Rbb8 22.Rc3=+) 21...Nd5–+ (21...Nc6 22.dc6 Rbc7 23.Bf6 gf6 24.Qc4+–) 22.Rh3 g6 23.Qe4 f6 24.Nd4 Re7–+ 25.Re1 Nc7 26.f4 e5 27.f5 Rg7 28.Nf3 Qf7 29.fg6=+ hg6 30.Be5 Re8? 31.Qh4+– Qd7?? 32.Qh8 Kf7 33.Ng5! fg5 34.Qg7 Ke6 35.Bc7 (35...Kd5 36.Rd1 Kc5 37.Qd7 Re1 38.Kf2 Rf1 39.Kf1 Kb4 40.Bd6 Ka5 41.Qa7 Na6 42.Qa6#; 35.Bg3 Kf5 36.Re5 Re5 37.Qe5 Kg4 38.Qe4#) 1–0. Brinkmann,Wilhelm – Schroeder, BdF, 1972.

10.Nbd2 Re8

11.a4 cd4 12.Nd4 Qc7 13.h3 =.

11.a4 e5 12.de5 Ne5 13.Ne5 Be5 14.Be5 Re5 15.Nf3 Re6 16.Qc2 Qe7 (16...d4 17.ed4 cd4 18.Qd3=) 17.cd5 Nd5 18.Rfd1 Rg6 (18...Nf4 19.Ra3=) 19.Ne1 (19.a5 Re8+=) 19...Re8 (19...Rd8 20.a5=) 20.Qd2 (20.Bc4 Nb4 21.Qb3 Qc7=) 20...Rd6 21.Qb2 (21.a5 Red8=) 21...Red8 (21...Rc8 22.Bc4=) 22.Bf3 Nb4 23.Rd6 Rd6 24.Bb7 Qb7 25.Qe5 Qd7 26.h3 (26.a5 h6=) 26...h6 27.Nf3 Rd5 (27...Qd8 28.Qf5=) 28.Qb2 (28.Qb8 Qd8 29.Qd8 Rd8=) 28...Rd1+= 29.Rd1 (better is 29.Ne1!?+=) 29...Qd1–+ Black is in command 30.Kh2 Qa4 31.Qe5 (31.Qe2 a6 32.Qd2 Qb5 (32...ab5?! 33.Qd8 Kh7 34.Ne5–/+) 33.Qd8 Kh7–+) 31...Qb5 32.Qb8 Kh7 33.Qa7 f6 34.Qf7 Nd3 (34...Qa4 35.Qe7–+) 35.Nh4 (better is 35.Qd5!? Nf2 36.Qf5 Kg8 37.Nh4+=) 35...Ne5–+ (35...Nf2?? 36.Nf5 Qd7 37.Qd7 Kg6 38.g4 Ng4 39.hg4 b5 40.Qg7) 36.Qe6 (36.Qe7 Qd7 37.Qd7 Nd7–+) 36...Qc6 37.Qf5 (37.Qa2 Qe4 38.Kg3 c4–+) 37...g6 38.Qc2 (38.Qb1 c4–+) 38...f5 39.f4–/+ Nd7 40.Qc4 Kg7–+ 41.Nf3 b5 42.Qc3 Kh7 43.Qd3 c4 44.Qc3 Qd5 45.Qb4 Qc5–+ 46.Qd2 Nf6 47.Nd4? b4 48.Ne6 Qe7 49.Nd4 Ne4 50.Qc2 c3 51.Nc6 Qb7 52.Na5 Qc7 53.Nb3 g5 54.g3 gf4 55.ef4 Qb6 56.Kg2 Qe3 (56...Qe3 57.g4 Qg3 58.Kf1 Qh3 59.Ke2 Qg4 60.Kd3 Qf4–+) 0–1. Liebscher,Bernhard – Olsson,Sture, corr 7578, 1978.

11.Qb1 cd4 A) 12.Bd4 e5 13.Bb2 Rc8 14.h3 e4 15.Nd4 Ne5 16.Rc1 Qd7 17.Qc2 Bb4 18.Bc3; B) 12.ed4 B1) 12...Ne4 13.Qc2 Rc8 14.Ne4 de4 15.Ne5 Ne5 16.de5 Bc5 17.Rad1 Qg5 18.Rd7; B2) 12...e5 13.de5 (13.cd5 e4 14.Nh4 Bf4 15.Nc4 Nd5 16.g3 Rc8 17.Ng2 Bc7 18.Nge3) 13...Ne5 14.Re1 Qc7 15.Ne5 Be5 16.Be5 Re5 17.Nf3 Re4 18.cd5; B3) 12...a6 13.cd5 (13.ba6 Ba6 14.Re1 Bb7 15.Qc2 Qe7 16.Qb3 dc4 17.Bc4 Ra5 18.Rac1; 13.a4 ab5 14.ab5 Ra1 15.Qa1 Ne4 16.g3 h6 17.Ne4 de4 18.Ne5) 13...ed5 14.ba6 Ba6 15.Ba6 Ra6 16.Re1 Re1 17.Qe1 Qa8 18.Qb1; B4) 12...h6 13.Ne5 (13.Rc1 Rc8 14.Qd3 e5 15.de5 Ne5 16.Ne5 Be5 17.Be5 Re5 18.Bf3; 13.Qc2 a6 14.ba6 Ba6 15.Ne5 Rc8 16.Qa4 Bb7 17.f4 dc4 18.Ndc4) 13...Bb4 14.Qc2 Ne5 15.de5 Ne4 16.Ne4 de4 17.Rad1 Qc7 18.g3; B5) 12...Rc8 13.Qd3 (13.Rc1 Ne4 14.cd5 Nd2 15.Nd2 Rc1 16.Qc1 ed5 17.Qd1 Nf6 18.Rc1; 13.Qc2 dc4 14.Bc4 Nd5 15.g3 a6 16.ba6 Ba6 17.Qb3 Bc4 18.Nc4) 13...e5 14.Ne5 Ne5 15.de5 Be5 16.Be5 Re5 17.Nf3 Re4 18.Nd2; C) 12.Nd4 C1) 12...Rc8 13.g3 (13.Rd1 Ne5 14.cd5 Bd5 15.h3 Qd7 16.f4 Ng6 17.Qd3 Red8 18.Rac1; 13.cd5 Bd5 14.Rd1 h6 15.g3 Ne5 16.f4 Ned7 17.Bf3 Bc5 18.Qd3; 13.Rc1 Nc5 14.cd5 Bd5 15.Bf3 Bf3 16.N4f3 Qe7 17.Be5 Red8 18.Bd6; 13.f4 g6 14.Bf3 Qe7 15.Rf2 Red8 16.a4 Nc5 17.a5 Nce4 18.Be4) 13...e5 14.Nc6 Bc6 15.bc6 Rc6 16.Bf3 Rc4 17.Nc4 dc4 18.Be2; C2) 12...Qc7 13.cd5 (13.g3 e5 14.N4b3 a5 15.a4 Nc5 16.Nc5 Bc5 17.cd5 Bd5 18.Qf5) 13...Bh2 14.Kh1 Nd5 15.N4f3 Bd6 16.Nc4 Bc5 17.Rd1 f6 18.Qc2.

11.Qb1 e5 12.de5 Ne5 (12...Be5 13.Ne5 Ne5 14.cd5 Qd5 15.Nf3 Nf3 16.Bf3 Ne4 17.Rd1 Qe6 18.Qd3) 13.Be5 (13.cd5 Bd5 14.Rd1 Qc7 15.Ng5 Rad8 16.f4 Ng6 17.Bf6 gf6 18.Nde4; 13.Rd1 Qc7 14.cd5 Bd5 15.g3 Rad8 16.Ne5 Be5 17.Nc4 Bc4 18.Be5; 13.h3 Qc7 14.cd5 Bd5 15.e4 Bb7 16.Rd1 Rad8 17.Ne5 Be5 18.f3) 13...Be5 14.Ne5 Re5 15.Nf3 Re8 (15...Rh5 16.cd5 Bd5 17.Qc2 Qc7 18.g3) 16.Rd1 (16.cd5!? Bd5 17.Rd1= Qc7 18.Qc2) 16...d4+= 17.Bd3 (17.Qb3 Qc7 18.h3) 17...Ne4 (17...Bf3 18.gf3 Qc7–/+; 17...Qc7 18.ed4) 18.Be4? (18.Re1 Nc3 19.Qc2 Bf3 20.gf3–/+) 18...Be4–/+ (18...Re4 19.ed4 Qf6 20.d5 Rc4 21.Qd3+=) 19.Qc1 (19.Qb2 Bf3 20.gf3 Qg5 21.Kh1 Qh5–/+) 19...Bf3–+ 20.gf3 Qg5 21.Kh1 de3 22.Re1 (better is 22.fe3 Re3 23.Rd3–+) 22...Qf6 23.Re3 Re3 24.fe3 Qf3 25.Kg1 Re8 26.Qd2 Qe3 (better is 26...Qg4!? 27.Qg2 Qc4 28.Qc6–+) 27.Qe3 Re3 28.Rd1 g6 29.Kf2 Ra3 30.Rd2 Rc3 31.Rd7 Rc2 32.Ke3 Ra2 33.Ke4 Kf8 34.Rc7 Rh2 35.Ra7 Rd2 36.Ke5 Re2 37.Kf6 (37.Kd5 Kg7–+) 37...Re6 38.Kg5 Re5 39.Kf4 Rf5 40.Ke4 h5 41.Ra6 Rf6 42.Ke5 Kg7 43.Ke4 (43.Ra2 g5–+) 43...h4 44.Ke5 h3 45.Ra2 g5 (45...g5 46.Rh2 g4–+) 0–1. Colomer Camarasa,Jordi (1945) – Serra Canals,Oriol (1655), Figueres ESP, 2011.

11.dc5 bc5 12.Qc2 Qe7 =.

11.cd5 ed5 12.dc5 bc5 =.

11.Ne5 a6 12.ba6 Ba6 13.f4 =.

11.Ne5 Qc7 12.f4 Rad8 (12...a6 13.ba6 Ba6 14.Qc2=) 13.a4 cd4 (13...Be7 14.Bd3=) 14.ed4 Bb4 15.Rc1 Qd6 16.cd5 Bd2 (16...ed5!? 17.Bd3 Rc8=) 17.Qd2+/– Ne4 (17...Bd5 18.Qe3 Qb4 19.Ba3 Qa4 20.Ra1+=) 18.Qe3 Ne5? (better is 18...ed5 19.Ba3 Qh6+–) 19.fe5+– (19.Qe4?! Ng6=; 19.de5?! Qd5 20.Rc7 Nc5+=) 19...Qd5 20.Bf3 (20.Rc7 Rc8 21.Rff7 Rc7 22.Rc7 Rc8 23.Rb7 Qb7+–) 20...Qa2 (20...Rd7 21.Rfe1 Qa2+–) 21.Rc2 (21.Be4?! Be4 22.Qe4 Qb2=) 21...Rc8 22.Re2 Qa4 23.Be4 (23.Ra1!? Qb5 24.Ra7 Nc5 25.Bb7 Nb7 26.Rb7 Qc6+–) 23...Be4 24.Qe4 Qb5 25.Rc2 (25.Ba3 Qa4 26.Bd6 Red8+–) 25...Rb8? (better is 25...Rc2 26.Qc2 Qd7+–) 26.Ba3 Qd7 27.Rfc1 (27.Bd6!? Rb7+–) 27...Rbc8 28.Bd6 Rc2 29.Qc2 f6 30.Qc4 Rd8 31.Qa6 Qf7 32.Rc8 Re8 33.h3 h6 34.Rc7 Qg6 35.Qa7 f5 36.Qb6 Ra8 37.Qb2 Qg3 38.Rc1 Qe3 39.Kh1 Qg3 40.Rb1 Rc8 41.Qa2 Qg6 42.Rb8 Rb8 43.Bb8 f4 44.Bd6 Kh7 45.Qf2 Qe4 46.Bc5 g5 47.Qf3 Qb1 48.Kh2 Kg6 49.d5 Qe1 50.d6 Qe5 51.d7 (51.d7 Qc7 52.Qd3 Kf6 53.d8Q Qd8 54.Qd8 Ke5 55.Qd4 Kf5 56.Qh8+–) 1–0. Mihailov,Dimitri (1765) – Ladzin,Ivan (1960), St Petersburg RUS, Chigorin Mem, 2014.

11.Ne5 Rc8 12.Rc1 Ne4 (12...cd4!? 13.ed4 dc4 14.Ndc4 Bb8=) 13.Ne4+= de4 14.Nd7 (14.Qa4 cd4 15.ed4 Be5 16.de5 Nc5=) 14...Qd7 15.dc5 bc5 (< 15...Rc5 16.Ba3+/–) 16.Qb3 (16.Qc2 Qc7 17.h3 Red8=) 16...Qc7 17.g3 (17.h3 Red8=) 17...Qe7 (17...Rcd8 18.Rcd1=) 18.a4 (18.Rcd1 Red8=) 18...Red8 19.a5 Qg5 (19...Rd7 20.Rcd1=) 20.a6 (20.Rcd1 Rb8=) 20...Ba8 21.Rcd1 h5 (21...Rd7 22.Be5 Qe5 23.Rd2–+) 22.h4 Qf5 23.Kg2 Bc7 24.Rd8 Rd8 25.Rd1 Rd3 26.Qc2 Qg6 27.Rg1 Qf5 28.Bc3 f6 29.Kf1 Re3 30.g4 Qf4 31.Bd2 Re2 32.Ke2 Qf3 33.Ke1 Bh2 34.Rf1 hg4 35.Qd1 g3–/+ 36.Qf3 ef3 37.fg3 Bg3 38.Kd1 f2 39.Be3= Bf3 40.Kd2+= Bg2 41.Rf2 Bf2 42.Bf2 Bf1 (42...Kf7 43.Bc5 Bf1 44.Kc3+– (44.Ba7?! Bc4 45.Bb6 Bb5=)) 1–0. Zepeda,Rafael – Miranda,Adrian, Central America–ch, 1997.

11.Ne5 Bf8 12.f4 cd4 13.ed4 dc4 14.Ndc4 Nd5 15.Rc1 f6 16.Nc6 Bc6 17.bc6 Nb8 18.Qa4 Qc7 19.Na3 Ba3 20.Ba3 f5 (better is 20...Nf4!? 21.Bc4 a6+/– (21...Nc6? 22.Ba6 Rac8 23.g3 Nh3 24.Kg2+–)) 21.g3+– a6 22.Rfe1 b5 23.Qc2 b4 24.Bf3 Qd6 (24...Nf4 25.Bb4 Nh3 26.Kg2+–) 25.Qc5 Qc5 26.Rc5 (26.dc5?! Nc6 27.Re6 Re6 28.Bd5 Rae8+=) 26...Nc6 27.Rc6 ba3 28.Rce6 Red8 29.R6e5 Nb4 30.Ba8 Ra8 31.Re8 Re8 32.Re8 Kf7 33.Re2 g6 34.Kf1 h6 35.Re3 Na2 36.Ra3 Nb4 37.Ra4 Nc6 (37...a5 38.Kf2+–) 38.d5 Nb8 39.Ke2 Ke7 40.Ke3 Kd6 41.Kd4 Kc7 42.Ra1 Kd6 (42...Kd8 43.Re1 g5 44.fg5 hg5 45.Re5+–) 43.h3 (better is 43.Re1!? a5+–) 43...h5 (43...Kc7 44.Re1 g5 45.Re7 Nd7 46.Re6 gf4 47.gf4+–) 44.Re1 ½–½. Osmak,Iulija (2365) – Anwesh,U (2370), May Lviv Tradition IM, 2015.

10.cd5 ed5

11.Nc3 Re8 12.Qc2 a5 13.ba6 Ba6 14.Ba6 Ra6 15.Nb5 Bb8 16.dc5 bc5 17.Rfd1 Qb6 18.a4 Qc6 19.Ng5 (19.Rac1 Ne4+=) 19...Be5 20.Bc3 h6 21.Nf3 Bc3 22.Nc3 Nb6 23.Ra2 Ra5 24.Rb1 Nc4 25.Rd1 Nd6 26.Nd2 (26.Qd2 Raa8+=) 26...c4 27.Rb2 Nfe4 (27...Ng4 28.Rdb1+=) 28.Nde4= Ne4 29.Ne4 Re4 30.Rb8 Re8 31.Re8 Qe8 32.Ra1 Qe5 33.Rd1 g6 34.g3 h5 35.Rd4 Rc5 36.Qc3 f5 37.Qb4 Qc7 38.Rd2 Kf7 ½–½. Baumann,Walter (2050) – Staf,Gunnar (2095), Sweden – Switzerland, 2009.

11.dc5 bc5 12.a4 Re8 13.a5 Bc7 14.a6 Bc8 15.Qc2 Qe7 16.Nc3 Nb6 17.Rfd1 (17.Na4 Ne4 18.Nb6 Bb6= (worse is 18...ab6 19.Rfd1+=)) 17...h6 (17...Rd8 18.Na4 Na4 19.Ra4=) 18.Na4= Na4 19.Bf6 Qf6 (worse is 19...gf6 20.Ra4 Be6 21.Rh4+=) 20.Ra4 Qd6 21.Bc4 Be6 22.e4 d4 23.e5 Qe7 24.Be6 fe6 25.Rc1 Bb6 26.Ne1 Rac8 27.Nd3 Qd7 28.Qb2 Rc7 29.Rac4 Rf8 30.f3 (30.Nc5? Qd5 31.Ne6 Rc4 32.Nf8 Kf8–+) 30...Qd5 31.Qc2 Rf5 32.Qe2 (32.Nc5 d3 33.Qd2 Rc5 34.Rc5 Bc5 35.Kh1 Re5–+) 32...Qd7 33.Qb2 (33.Nc5?? d3 34.Qe4 d2–+) 33...Qd8 34.Qa2 (34.Nc5 Qd5 35.Na4 Rc4 36.Nb6 ab6 37.Rc4 Qc4–+) 34...Rff7 35.Qc2 (35.Nc5?? d3 36.Kh1 Bc5–+) 35...Rf5 36.Qa2 Rff7 ½–½. Boehnke,Hartmut (2160) – Dunlop,Gordon (2130), WS/M/352 ICCF, 2011.

11.Ne5 a6 A) 12.ba6 Ba6 (12...Bc8 13.Nd7 Bd7 14.dc5 bc5 15.h3 Bc8 16.Na3 Ba6 17.Nb5 Ne4 18.a4=) 13.Ba6 Ra6 14.Nd7 Nd7 15.Nc3 Nf6 16.dc5 bc5 17.Nb5 Qb8 18.Bf6+=; B) 12.Nd7 Nd7 (12...Qd7 13.dc5 bc5 14.Bf6 gf6 15.ba6 Ba6 16.Ba6 Be5 17.Nc3 Ra6 18.Qd2=) 13.dc5 bc5 14.Nc3 Nb6 15.Bd3 Qg5 16.Qc2 Qh5 17.g3 c4 18.Be2+=.

11.Ne5 Qb8 A) 12.f4 Qe8 (12...Re8 13.Bh5 Nh5 14.Qh5 Be5 15.fe5 Re7 16.Nc3 a6 17.ba6 Ra6 18.Nb5=) 13.Nc3 Qe6 14.Qc2 a6 15.Bd3 g6 16.ba6 Ba6 17.Ba6 Ra6 18.f5=; B) 12.Nd7 Nd7 (12...Bh2 13.Kh1 Nd7 14.g3 Bg3 15.fg3 Qg3 16.Rf3 Qg5 17.Nc3 Rae8 18.Qd3=) 13.h3 c4 14.Nc3 a6 15.Qc2 Re8 16.Bf3 Nf6 17.Rfc1 Qd8 18.ba6=.

11.Ne5 c4 12.Bf3 Rc8 (12...Qc7 13.Nd7 Qd7 14.Ba3 Ba3 15.Na3 Rfc8 16.Qc2 a6 17.Rfb1 ab5 18.Nb5=) 13.Qa4 Re8 14.Nd7 Qd7 15.Nc3 a6 16.ba6 Bc6 17.Qc2 b5 18.a4 +=.

11.Ne5 c4 12.f4 Ne4 (12...a6 13.Nc3 ab5 14.Nb5 Be7 15.Bf3 Ne5 16.fe5 Ne4 17.Be4 de4 18.Qc2=; 12...Re8 13.Bf3 Qe7 14.Nc4 dc4 15.Bb7 Qe3 16.Kh1 Rab8 17.Bc6 Rbd8 18.Nc3+=) 13.Bf3 (13.Nc3 Nc3 14.Bc3 f6 15.Nc6 Qe8 16.Qd2 Bc6 17.bc6 Nb8 18.c7+=) 13...Ndf6 14.a4 (14.Nc3 Nc3 15.Bc3 Qe7 16.a4 a6 17.Qc2 ab5 18.ab5+=) 14...a6 (14...Bc8 15.g4 Qc7 16.g5 Nd7 17.Be4 de4 18.Nd2=) 15.ba6 (15.Nc3 Nc3 16.Bc3 Qe7 17.Qc2 ab5 18.ab5+=) 15...Ba6 (15...Bc8 16.Be4 Ne4 17.Nc3 Nc3 18.Bc3+=) 16.Nc3 Nc3 17.Bc3 b5 (17...Qc7 18.Qc2=) 18.Qd2 (18.ab5=) 18...b4 19.Bb4 Bb4 (19...c3!? 20.Qc3 Bf1 21.Kf1 Re8+=) 20.Qb4+/– Rb8 21.Qc5 Rc8 (better is 21...Rb7+/–) 22.Nc6+– Rc6 23.Qc6 Qa5 24.Qc5 (24.Rfb1 Bc8+–) 24...Qd2 (24...Qc5 25.dc5 Rc8 26.Rfb1 Rc5 27.Rb8 Bc8 28.a5+–) 25.Rfe1 c3 (25...Bb7 26.a5+–) 26.Qc6 Bc4 27.a5 h5 (27...Qd3+–) 28.a6 Ng4 (28...Ba6 29.Qa6 Qb2 30.Qc6+–) 29.Bg4 hg4 30.a7 1–0. forsetinn (2205) – tflk (1755), gameknot.com, 2014.

11.Ne5 c4 12.Bg4 Ng4 (12...Qc7 13.Nd7 Nd7 14.h3 a6 15.Nc3 Nf6 16.ba6 Ra6 17.Nb5 Qc6 18.Nd6+=) 13.Qg4 Nf6 14.Qf5 a6 15.Nc3 Qc8 16.Qg5 Ne4 17.Qh5 f6 18.ba6 –/+.

11.Ne5 Qc7 A) 12.Nf3 c4 (12...Rfc8 13.Nc3 c4 14.Qc2 a6 15.Rfc1 Ne4 16.a4 Nc3 17.Bc3 Nf6 18.Ne5+=) 13.Nc3 Rfc8 14.a4 Ne4 15.Qc2 Ndf6 16.Rac1 a6 17.ba6 Nc3 18.Bc3+=; B) 12.Nd7 Nd7 (12...Bh2 13.Kh1 Nd7 14.g3 Bg3 15.fg3 Qg3 16.Rf3 Qg5 17.Nc3 Rae8 18.Qd3=) 13.h3 c4 14.Nc3 a6 15.Bf3 Nf6 16.Qc2 Qe7 17.ba6 Ra6 18.Nb5+=.

11.Ne5 Re8 A) 12.Nf3 Qe7 (12...c4 13.Ba3 Ba3 14.Na3 Qe7 15.Qc1 Rac8 16.Nb1 Qb4 17.a4 Ne4 18.Ra3+=) 13.dc5 bc5 14.Nc3 Ne5 15.Re1 Qc7 16.Ng5 Nc4 17.Bc4 Bh2 18.Kh1–/+; B) 12.Nd7 Qd7 (12...Nd7 13.dc5 bc5 14.Nd2 Qh4 15.Nf3 Qh6 16.h3 Rac8 17.Bd3 Re7 18.Rc1=) 13.dc5 bc5 14.Bf6 gf6 15.Nd2 f5 16.Bd3 Be5 17.Rb1 c4 18.Be2=.

10.cd5 Bd5

11.dc5 Nc5 12.Nbd2 Qe7 13.Nc4 Bc7 14.Nce5 Rad8 15.Qc2 Bf3 (15...Be4!? 16.Qc3 Rd6=) 16.Bf3+= (< 16.gf3 Be5 17.Be5 Nd5=+) 16...Be5 17.Be5 Qd7 (17...Nfd7 18.Bc3+=) 18.Bf6+/– gf6 19.Qb2 e5 20.Rfd1 Qe6 unclear. Schirmer,Michael – White,M J, corr 3GMM–29, 1995.

11.Nc3 Bb7

12.a4 Qc7 13.h3 cd4 14.Nd4 Ne5 (14...Rac8 15.f4+=) 15.Rc1= Qe7 (15...Bc5=) 16.Bf3 (better is 16.f4!? Ng6 17.Bf3=) 16...Nf3–/+ 17.Nf3 Rfd8 18.Qe2 Ne4 (18...Rac8 19.Rfd1–/+) 19.Ne4+= Be4 20.Bd4 (20.Nd4 Bc5+=) 20...Rac8 21.Rfe1 (21.Nd2 Bb7+=) 21...e5–/+ 22.Bb2 Bb4 23.Rc8 Rc8 24.Ne5?? (better is 24.Rc1 Rc1 25.Bc1–/+) 24...Rc2–+ 25.Qg4 (25.Qc2 Bc2 26.Rc1 Bf5–+) 25...Be1 26.Bd4 (26.Qe4 Rb2 27.Qa8 Qf8 28.Qf8 Kf8 29.Kf1–+) 26...Bf2 27.Kh2 f6 (better is 27...f5 28.Qf4 g5–+) 28.Qe4 Rc8 (28...fe5 29.Qc2 ed4 30.Qf2 de3 31.Qa2 Kf8 32.Qe2 Qe5 33.Kg1–+) 29.Qd5 Kf8 30.Nc6 Qc7 31.Kh1 Bg3 32.Qf5 Kf7 (32...h6!?–+) 33.Qh7 (33.Bf6!? gf6 34.Qh7 Ke6 35.Qe4 Be5 36.Qc4 Kd6 37.Qd3 Ke6 38.Qc4 Kd7 39.Qd5 Ke8 40.Qg8 Kd7 41.Qd5 Ke8 42.Qg8 Kd7 43.Qd5=) 33...Qd6 34.Qh5 Kg8 35.Qg4 Re8 36.h4 (36.Kg1 Qc7+=) 36...Be5 (36...Bf2 37.Qf3 Qg3 38.Qg3 Bg3 39.Na7+=) 37.Be5= fe5 38.Na7 Rf8 39.Kg1 Qd2 40.Nc6?? (better is 40.Kh2+=) 40...Qe1–+ (40...Qe3?! 41.Kh2+=) 41.Kh2 Rf1 42.Ne7 Kf7 (42...Kf7 43.Qh5 Ke6 (43...Ke7?! 44.Qe5 Kf8 45.Qd6 Kg8 46.Qd5 Rf7 47.Qd4–+) 44.Qg4 Ke7 45.Qg7 Kd6 46.Qh6 Kc5–+) 0–1. mr5reasons1 (1675) – queensservant (1670), gameknot.com, 2011.

12.Qa4 Qc7 =.

12.Qc2 Qc7 13.h3 =.

12.Qc2 Rc8 13.Rad1 Qc7 14.e4 cd4 15.Rd4 Ne5 =.

12.Qc2 Rc8 13.Rfd1 Qc7 14.e4 cd4 15.Rd4 Ne5 16.Ra4 (16.Ng5 Neg4 17.Rd6 Qd6 18.Bg4 A) 18...Ng4?? 19.e5 Be4 20.Qe4+– (20.ed6 Bc2 21.Nf3 Rfd8=+; 20.Nge4?! Qe5 21.h3 Qh2 22.Kf1 Ne5=); B) 18...Qf4 19.Be6 fe6 20.Ne6 B1) 20...Be4 21.Qb3 (21.Nf4 Bc2 22.Re1 Rfe8 23.Re8 Re8–/+) 21...Qd6 22.Ne4 Ne4 23.Nf8 Kf8 24.Qf3 Nf6 25.Ba3+–; B2) 20...Qe4 21.Qe4 Ne4 22.Ne4 Be4 23.Nf8 Kf8+=) 16...Nf3=+ 17.Bf3 Bh2 18.Kh1 Be5 19.Ra7 Be4! 20.Qa4 (20.Qe4 Ne4) 20...Qc5–+ 21.Be4? (better is 21.Ne4 Ne4 22.Be4 Bb2 23.Rf1–+) 21...Qf2 (better is 21...Bc3 22.Bh7 Nh7 23.Bc3 Qc3–+) 22.Bc2 (22.Qb4 Bd4 23.Qd4 Qd4–+) 22...Qg3 (< 22...Bc3 23.Bc3 Rc3 24.Rc1–+; 22...Rc3?! 23.Bc3 Bc3 24.Rd1=+) 23.Kg1 Ng4 (< 23...Bc3 24.Bc3 Qc3 25.Bh7 Kh7 26.Qh4 Kg6 27.Re1–+; 23...Rc3?! 24.Bc3 Qh2 25.Kf1 Bc3 26.Rd1=+) 24.Bh7 Kh7 25.Qc2 Kg8 26.Qd2 Rfd8 (27.Rd7 Rd7 28.Ne4 Qh2 29.Kf1 Qh1 30.Ke2 Qg2 31.Ke1 Rd2 32.Nd2 Qf2 33.Kd1 Ne3#) 0–1. Koller – Kellermann, corr ICCF TT–4–90 SF, 1993.

12.dc5 Nc5 13.Nd4 Qc7 =.

12.Qd3 Qc7 13.Rfc1 Rfd8 14.h3 Rac8 =.

12.Qd3 Qc7 13.h3 cd4 14.Qd4 Rfd8 15.Qh4 Nc5 16.Rac1 Qe7 (16...Rac8 17.Na4=) 17.Rfd1 Rac8 18.Nd4 Nd5 19.Qe7 Be7 (19...Ne7 20.Rd2=) 20.Nd5 Bd5 21.Bf3 Bf3 22.Nf3 a6 23.ba6 Rd1 24.Rd1 Ra8 25.Ne5 (25.a3 Ra6 26.Kf1 f6=) 25...Ra6 26.Nc6 Bf8 (26...Kf8 27.a3=) 27.Rd8 f6 28.a3 e5 (28...Kf7 29.Kf1=) 29.Ne7 (29.Nb4 Ra5=) 29...Kf7 30.Nd5 Ra5 31.Nb4 (31.Nc3 e4 32.Rd2 Ke6=+) 31...Ne4 (31...Na4 32.Bc1=+) 32.f3 Nd6 33.Rd7 Ke6 34.Rc7 b5 35.Nc2 (35.Nc6 Ra8 36.Na7 Nc4 37.Nb5 Nb2–/+) 35...Nc4 36.Bc1 Ra8 (36...h5 37.e4–/+) 37.e4 Rd8 (38.Ne3 Ne3 39.Be3 Rd3–/+ (39...Ba3?! 40.Rb7=); 37...Na3?! 38.Ba3 Ba3 39.Na3 Ra3 40.Rg7=) 0–1. Zimmermann,Joerg – Woelfelschneider,Peter, TT–09 ETC, 2003.

10.cd5 Nd5

11.Na3 =.

11.Nbd2 =.

11.e4 N5f6 12.e5 +–.

9.d4 Qc7

10.Nbd2 Bb7 11.h3 Rfd8 12.Qb3 Rac8 13.a4 e5 14.cd5 cd4 15.Bc4 de3 16.fe3 Nc5 17.Qa2 Nce4 18.Rac1 Nd2 19.Nd2 Bc5 20.Rf3 Nd5 21.Ne4 Be3 22.Re3 Ne3 23.Be6 Qc1 24.Bc1 Rc1 25.Kh2 Be4 0–1. Labahn,Wolfgang – Meyers, Hamburg 1993.

10.Nbd2 cd4 11.ed4 a6 12.Rc1 =+.

10.Nbd2 e5 11.Ne5 (11.de5 Ne5 12.cd5 Nd5+=) 11...Ne5= (< 11...Be5 12.de5 Ne5 13.cd5+/–) 12.de5 Be5 13.Be5 Qe5 14.Nb3 (14.cd5 A) 14...Qd5?? 15.Bf3 Bg4 16.Bd5 (16.Bg4?! Ng4 17.Qg4 Qd2=) 16...Bd1 17.Ba8+– (17.Rad1?! Nd5 18.Nb1 Rfd8=); B) 14...Nd5 15.Nf3 Qf5=) 14...Re8 (14...dc4 15.Bc4 a6 16.Qf3=+) 15.Bf3 Bf5 16.Qe2 Rad8 17.cd5 (17.Rfd1 d4=+) 17...Nd5 18.Bd5 Rd5 (18...Qd5 19.Rfd1 Bd3 20.Qb2=+) 19.Rad1 Red8 20.Rd5 (20.Qh5 Qe4=+) 20...Rd5 (20...Qd5 21.Nc1=+) 21.Rd1 Rd1 (21...Qd6 22.Rd5 Qd5 23.Nc1=+) 22.Qd1= g6 23.Qe2 (23.Qd8!? Kg7 24.Qd2=+) 23...Qe4 24.Qb2 (24.h3 Qb1 25.Kh2 Bd3–/+) 24...Qd3 (better is 24...Qc2 25.Qc2 Bc2–/+) 25.g3?? (better is 25.h3–/+) 25...Bh3 (25...Qd1 26.Kg2 Be4 27.f3 Qf3 28.Kg1 Qh1 29.Kf2 Qh2 30.Ke1 Qb2 31.Nd2 Bd3 32.a3 Qc1 33.Kf2 Qd2 34.Kg1 Qe1 35.Kh2 Qf2 36.Kh3 Bf1 37.Kh4 Qf6 38.Kg4 h5) 26.Nd2 c4 (26...Qe2 27.Qc1 c4–+ (27...Qb5?! 28.Ne4–/+)) 27.Qd4 Qe2 (28.Qd8 Kg7 29.Qd4 f6 30.Qc4 Qd2 31.Qc7 Qd7 32.Qd7 Bd7–+) 0–1. Eisenhauer,Erik – Voelbel,Patrick, Woerrstadt, 1999.

10.Qd3 Bb7 11.Nc3 (11.Nbd2 Rac8=) 11...dc4=+ 12.Qc4 Bf3 13.Bf3 Bh2 14.Kh1 Rac8 (14...cd4 15.Qc7 Bc7 16.ed4=+) 15.Rac1 (15.g3!? Bg3 16.fg3 Qg3 17.Qe2+=) 15...Bd6 (15...cd4 16.Qc7 Bc7 17.ed4 Bf4=+) 16.d5 (16.Rfd1!?=+) 16...Ne5–/+ 17.de6?? (better is 17.Qe2–/+) 17...Nc4–+ 18.ef7 Qf7 19.Nd5 Nb2 20.Nf6 Qf6 21.Bd5 Kh8 22.g3 Nd3 23.Rc2 Bg3! 24.Kg1 (24.fg3 Qf1) 24...Bf2 25.Rff2 Nf2 (26.Rd2 Ng4 27.Kg2 Ne3 28.Kg1 Qg5 29.Bg2 Rf1 30.Kh2 Qh4 31.Bh3 Qf4#) 0–1. Marczyk,L – Ciesielski,S, corr Poland, 1995.

10.cd5 ed5 11.a4 (11.dc5 bc5 12.Qc2 Re8=) 11...c4 12.Nc3 Bb7 (12...Re8 13.Qc2=) 13.Ba3 Ng4 (13...a6 14.ba6 Ba6 15.Qc2=) 14.Bd6+= Qd6 15.a5 (15.Qc2 a6+=) 15...f5 (15...a6!? 16.ba6 Ra6 17.ab6 Ra1 18.Qa1 Ra8=) 16.a6+/– Bc8 17.Ne5 (17.Rc1 Ndf6+=). Sokolski,Aleksey P – Zaitsev,Alexander N, corr URS–ch07, 1965.

10.dc5 bc5

11.cd5 ed5 12.Nc3 Nb6 =.

11.cd5 ed5 12.Nc3 Bb7 13.Qa4 Rad8 14.Qh4 Ne5 15.Ne5 Be5 =.

11.cd5 ed5 12.Nc3 Bb7 13.h3 Rfd8 14.Rc1 Rac8 15.Qb3 (15.Re1 Qa5=) 15...c4 (15...Qa5 16.Rfd1=) 16.Qc2= Nc5 17.Rfd1 Qa5 (17...Re8 18.Nd4=) 18.Nd4 Nce4 (18...Be5 19.Qf5 Re8 20.Nf3=) 19.Bf3 (19.a4 Re8=) 19...Nc5 20.Be2 Nfe4 (20...Be5 21.Qf5 Bd4 22.Rd4=+ (< 22.ed4 Nce4–/+)) 21.Bf3 (21.a3 Be5=) 21...Bb8 (21...Nd3 22.Nb3 Qb6 23.Rd3 cd3 24.Qd3 Nc3 25.Bc3=+) 22.g3 (22.Ne4 Ne4 23.Nf5 Qc7+=) 22...Qc7 (22...Nd3 23.Nd5 A) < 23...Rd5 24.Be4 Nc1 A1) < 25.Qc1 Rb5 26.Bc3 Qa6= (< 26...Qa2 27.Bf5+=); A2) 25.Rc1+/–; B) 23...Bd5 24.Rd3 cd3 25.Qc8 d2–+) 23.Ne4+= Ne4 (23...de4 24.Bg4 Nd3 25.Rb1+=) 24.Bg4+/– Ng3 25.Bc8 (25.fg3 Qg3 26.Kh1 Rc5+/–) 25...Bc8 26.fg3 Qg3 27.Qg2 Qe3 28.Kh1 Qh6? (28...Bh3 29.Qg7!? Kg7 30.Nf5 Kg6 31.Ne3 Bf4 32.Nd5 Bc1 33.Bc1 Bd7+–) 29.Rg1?? (29.Nc6 Bh3 30.Qg7 Qg7 31.Bg7 Bg4 32.Nd8 Bd1 33.Rd1 Kg7 34.Rd5 Bc7 35.Ne6 fe6 36.Rd7 Kg6 37.Rc7 h6 38.Ra7 c3+–) 29...g6?? (29...Be5 30.Rge1 Bh3–/+) 30.Rc3+– Be5 31.Rf3 Re8 32.Qg5?? Qg7 33.Re1+– Bd7 34.Rfe3 f6 35.Qg2 Rc8 36.Qd5 Kh8 37.Bc3 Re8 38.Nc6 Be6 39.Qd1 Bc3 40.Re6 Rf8 41.Re7 Qh6 42.R1e3 Be5 43.Ne5 fe5 44.R7e5 Qf4 45.Re8 Re8 46.Re8 Kg7 47.Re7 Kh6 48.Qe2 Qc1 49.Kh2 (49...Qf4 50.Kg2 Qg5 51.Kf1 Qc1 52.Qe1 Qf4 53.Ke2+–; 49.Qe1 Qg5+–) 1–0. Kreuzer,Uwe – Frank, 1982.

11.Qc2 Bb7

12.Nbd2 Ng4 13.h3 Nge5 14.cd5 ed5 15.Ne5 Ne5 16.f4 =.

12.Nbd2 Ne4

13.Rfd1 Nd2 14.Rd2 Rfd8 =.

13.Rfd1 f5 =.

13.h3 Nd2 14.Nd2 a6 15.cd5 ed5 16.a4 =.

13.h3 Nd2 14.Qd2 dc4 15.Rfd1 += (< 15.Bc4 Bf3 16.gf3 Ne5 =+).

13.h3 f5

14.a4 Rad8 15.Rfd1 =.

14.a4 Ndf6 15.cd5 ed5 16.a5 =.

14.a4 h6 15.Rfd1 Rf7 16.a5 Rd8 17.cd5 ed5 18.a6 =.

14.a4 h6 15.Rfd1 Rf7 16.a5 Raf8 17.Bd3 Ndf6 18.Nb3 (18.cd5 ed5 19.a6 Ba8=) 18...Nh5 (18...Rd8 19.cd5 Bd5 20.Rac1=) 19.a6 (19.cd5 Bd5 20.Nbd2 Nd2 21.Nd2 Rb8+=) 19...Ba8 20.Na5 (20.cd5 Bd5 21.Nbd2 Nd2 22.Nd2 Rb8+=) 20...f4 (20...Nhf6 21.cd5 ed5 22.Nb3=) 21.cd5+= ed5 22.Be4 de4 23.Nc4 ef3 (23...Be7 24.Be5 Qc8 25.Ne1+=) 24.Nd6+/– fe3 (24...Re7 25.Qg6 Rd8 26.Nf5+– (26.Qh5?! Rd6 27.Rd6 Qd6=+)) 25.Nf7 Rf7 26.b6 (26.Rac1 Nf4 27.fe3 Ne2 28.Kf1 Nc1 29.Qc1 fg2 30.Kg1 Bf3–+) 26...ab6 (26...Qb6 27.fe3 f2 28.Kh1 Ng3 29.Kh2–+) 27.Re1 (27.gf3 b5= (27...Bf3 28.a7 Ba8 29.Rf1=+)) 27...ef2+= 28.Qf2 (< 28.Kf2 Qg3 29.Kf1 fg2 30.Kg1 Rf8–+ (30...Qh3?? 31.Re8 Rf8 32.Qc4 Kh7 33.Rf8 Qe3 34.Rf2+–)) 28...Qc8 29.Re5 (better is 29.Rf1!?+=) 29...fg2=+ 30.Qe3 (30.Qe2 Nf6 31.Qe3 Qd7=+) 30...Qf8 (30...Rf1 31.Rf1 gf1R 32.Kf1 Qa6 33.Kg1–/+) 31.Qb3 Kh8 (32.Qc4 Ng3=+). Boehnke,Hartmut (2005) – Dvorniak,Alexei, corr EM/M/179 ICCF Email, 2002.

14.a4 h6 15.Rfd1 Rf7 16.a5 Raf8 17.cd5 ed5 18.a6 Ba8 =.

14.Rfd1 Rad8 =.

14.Ne4 de4 15.Ng5 Rfe8 =.

9.d4 cd4

10.ed4 Bb7 11.Nbd2 Re8 12.Ne5 Rc8 13.Rc1 Bb8 14.cd5 Rc1 15.Qc1 (< 15.Bc1 Ne5 16.de5 Qd5–/+) 15...Ne5 (15...Nd5 16.Ndf3=) 16.de5+= Nd5 (16...Qd5? 17.Bf3 Qb5 18.ef6+– (18.Bb7?! Be5 19.Be5 Qe5+/–)) 17.Ne4 Qh4 18.f4 Rd8 19.Ba3 (19.Qd2 Bc7=) 19...Rd7?? (better is 19...Be5 20.fe5 Qe4–+) 20.Rf2 h6 21.Bf1 (21.Nd6 Bd6 22.Bd6 Kh8+=) 21...Qd8 (21...Be5!? 22.fe5 Qe4=+) 22.Rc2 (22.Nd6 Bd6 23.Bd6 Ne7+=) 22...Nc7 (better is 22...Nf4!? 23.Qf4 Rd4=) 23.Nd6+/– Bd5 24.f5 ef5 25.Rf2 (25.Bd3!? Be4 26.Be4 fe4 27.Rc4=) 25...Ne8=+ 26.Qf4 (26.Rd2!? Nd6 27.Rd5=+) 26...Nd6–/+ 27.ed6 Bd6 28.Bd6 Rd6 29.Qf5 Be6 30.Qc2 Rd1 31.Qa4 Ra1 32.h3 Qd3 33.Qa7 Qe3 (better is 33...Qd4!? 34.Qa8 Kh7–+) 34.Qb8=+ Kh7 35.Qf4 Qf4 36.Rf4 Ra2 37.Bd3 Kg8 38.Rd4 Ra8 39.Be4 Rb8 40.Bc6 Kf8 41.Kf2 Ke7 42.Ke3 Rc8 43.Kf4 Rc7 44.Ke5 Ra7 45.Kf4 Ra2 ½–½. Grund,Karl – Weeber,B, corr, 1972.

10.ed4 dc4=+

11.Nbd2 c3 12.Bc3 Bb7 13.Bb2 Rc8 14.Qa4 Bf3 (14...Bd5 15.Rfc1=+) 15.Nf3= Qc7 16.Rac1 Qb8 17.h3 (17.Rc6 Bf4+=) 17...Rc1 (17...Nd5 18.Rc6=) 18.Rc1 Bf4 19.Rc6 Nd5 20.Ba3 Rd8 21.Qc2 N7f6 22.Bd3 g6 23.Kf1 (23.Qe2 Qb7+=) 23...Re8 24.Qc4 Kg7 25.Qc2 (25.Kg1 Rd8+=) ½–½. Laber,Seweryn – Widziszewski,Franciszek, corr 1. AMM Poland, 1991.

11.Nbd2 c3 12.Bc3 Bb7 13.Nc4 Bf4 =.

10.Qd4 e5

11.Qd2 =.

11.Qh4 =.

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