Table of contents:

• (...)
  • 6.c4 a5
  • 6.Be2 Be7

• 6.c4 a6
  • 7.a4 Nbd7

• 6.c4 d5
  • 7.a4 a5
  • 7.a4 a6
  • 7.a4 dc4
  • 7.a4 Bd6=+
  • 7.a4 Nbd7
  • 7.Nc3 Nbd7
  • 7.d4 Nbd7
    • 8.Nbd2 Bd6
    • 8.Nbd2 Be7
  • 7.d4 Be7
  • 7.cd5 ed5
  • 7.cd5 Bd5
    • 8.Nc3 Bb7
  • 7.cd5 Nd5
  • 7.Be2 a6
  • 7.Be2 dc4
  • 7.Be2 Bd6
    • 8.0-0 0-0
  • 7.Be2 Nbd7
    • 8.0-0 Qc7
    • 8.0-0 Bd6
      • 9.d3 dc4
      • 9.d4 Qc7
    • 8.0-0 Be7
    • 8.d4 cd4
  • 7.Be2 Be7

• 6.c4 d6
  • 7.a4 Nbd7
  • 7.Be2 Be7

• 6.c4 Be7
  • 7.Nc3 d5
  • 7.Be2 0-0
    • 8.0-0 d5
      • 9.a4 a5
      • 9.a4 a6
      • 9.a4 dc4
        • 10.Bc4 Nbd7
      • 9.a4 Nbd7
        • 10.Na3 Qc7
        • 10.Nc3 Qc7
        • 10.d3 dc4
        • 10.d3 Qc7
          • 11.Nbd2 Ng4
        • 10.d4 dc4
          • 11.Bc4 Rc8
          • 11.Nbd2 cd4
            • 12.Nd4 Ne5
        • 10.d4 Qc7
        • 10.d4 Rc8
          • 11.Nbd2 cd4
        • 10.d4 cd4
        • 10.d4 Ne4
      • 9.Qc2 dc4
      • 9.Qc2 Nbd7
        • 10.d3 Qc7
      • 9.d3 dc4
      • 9.d3 Nbd7
        • 10.Qc2 Qc7
      • 9.d4 a6
        • 10.a4 Nbd7
      • 9.d4 dc4
      • 9.d4 cd4
      • 9.d4 Nbd7
        • 10.Nc3 Rc8
          • 11.cd5 ed5
          • 11.cd5 Nd5
        • 10.Nbd2 a6
          • 11.a4 ab5
        • 10.Nbd2 dc4
        • 10.Nbd2 Qc7
          • 11.Rc1 Rac8
        • 10.Nbd2 Rc8
          • 11.Qa4 Ra8
        • 10.Nbd2 cd4
        • 10.Nbd2 Ne4
          • 11.cd5 ed5
        • 10.cd5 ed5
      • 9.d4 Ne4
    • 8.0-0 d6
  • 7.Be2 d5
  • 7.Be2 d6

• 6.bc6 Nc6
  • 7.c4 Be7=+
  • 7.Be2 Be7

• 6.Be2 d5
  • 7.0-0 Bd6
  • 7.0-0 Nbd7
  • 7.0-0 Be7

• 6.Be2 d6
  • 7.0-0 Be7

6.a4 a5 7.c4 d6 8.Be2 Be7 9.0-0 Qc7 10.Qc2 Nbd7 11.d4 Rc8 12.Nbd2 0-0 13.Bd3 Qb8 14.e4 e5 15.d5+= Rc7 16.Qd1 Re8 17.Nh4 g6 18.g3 Bf8 19.Ndf3 Bg7 20.Bc1 Nf8 21.Ng2 Bc8 22.Nfh4 Bh3 23.Re1 Bg2 24.Ng2 Qc8 25.Bg5 h6 26.Be3 Kh7 27.Nh4+/– Ng4 28.Bd2 Bf6 29.Ng2 Bg7 30.Ne3 Nf6 31.Ng2 Ng8 32.Nh4 Qd8 33.Qf3 f6 34.Ng2 Rf7 35.h4 f5? 36.ef5 gf5 37.Bf5 Kh8 38.Qe4?? Ne7?? 39.Be6 Ne6+/– 40.de6 Rf6 41.Ne3 Ref8 42.Ng4 Re6 43.Bh6?? Bh6–+ 44.Nh6 Rh6 45.Qd5?? Nd5 46.cd5 Rh4! 47.gh4 Qh4 48.Ra2 Qg4 49.Kf1 Qc4 50.Ree2 Rf4 51.Ke1 Re4 52.Kd2 Re2 (52...Re2 53.Kd1 Ra2 54.Ke1 Qe2#; 52...Rd4 53.Ke3 Qb3#) 0–1. MammaMia – IPKnightly, Live Game Caissa's Web, 2004.

6.a4 a6 7.c4 (7.ba6 Na6 8.Bb5 Nc7=) 7...ab5 (7...Be7 8.ba6 Na6 9.d4+=) 8.ab5 Ra1 9.Ba1 d6 (9...d5 10.d4=) 10.Be2 Nbd7 11.Qc2 (11.0-0 Be7=) 11...Be7 (11...Ne5 12.Ne5 de5 13.Be5 Bg2 14.Rg1=) 12.0-0 0-0 13.Nc3 Qc7 14.Bb2 Ra8 15.Ra1 Ra1 16.Ba1 Qb8 (16...Ne5 17.Ne5 de5 18.e4=) 17.Qa4 (17.d3 Qc7=) 17...Ne4 (17...e5 18.d4=) 18.Nd1 (18.Ne4 Be4 19.d3 Bb7=) 18...Qa8 (18...Bf6 19.Bf6 Ndf6 20.d3+–) 19.Qa8 Ba8 20.d3 Bf6 21.Bf6 Nef6 22.Nc3 (22.Nb2 Ne5=) 22...d5 23.Nd2 (23.cd5 Bd5 24.Nd5 Nd5=) 23...Kf8 (23...d4 24.Nd1=) 24.f4 (24.Bf3 Ne5 25.Be2 d4 26.ed4 cd4=) 24...Ke7 (24...d4 25.ed4 cd4 26.Nce4=) 25.Bf3 Kd8 (25...d4 26.ed4 (worse is 26.Ba8 dc3 27.Nb3 e5+=) 26...cd4 27.Na4 Bf3 28.Nf3+/–) 26.Kf2 (26.d4+=) 26...Ng8 (better is 26...d4!? 27.ed4 cd4=) 27.cd5+/– ed5 28.e4 (better is 28.Bd5!? Bd5 29.Nd5+/–) 28...de4 (28...d4 29.Ne2=) 29.de4+= Kc7 (29...Ngf6 30.Nc4+=) 30.Nc4 White prepares the advance e5 30...Ne7 31.g4 f6 32.h4 (32.e5 Bf3 33.Kf3 fe5 34.fe5 Kd8+=) 32...Nf8 (32...Ng6 33.Kg3+=) 33.Ke3 (33.Nd5 Bd5 34.ed5 Neg6 35.d6 Kd8+/–) 33...Nc8 (33...Nd7 34.Nd5 Bd5 35.ed5+=) 34.e5 (34.Nd5 Bd5 35.ed5 Nd6 36.Nd6 Kd6+=) 34...Bf3 35.Kf3 fe5 36.fe5 Ne7 37.Ke4 Ne6 38.Nd6 Kd7 39.Nc4 (39.Na4 Kc7+/–) 39...Kc7+= 40.Nd6 (40.Nd5 Nd5 41.Kd5 Nf4 42.Ke4 Ne6+/–) 40...Kd7+/– 41.Nf5 (41.Na4 Kc7+/–) 41...Nf5 42.gf5 Nd4 43.h5 h6 (43...Ke8 44.e6+/–) 44.Kf4 (44.Nd5 Nb5 45.Nb6 Ke8+/–) 44...Ke8 45.Nd5 (45.e6 c4+/–) 45...Nb5 46.Nb6 Nd4 47.Na4 (47.Nc4 Ke7+/–) 47...c4 48.Nc3 Nc2 (48...Ke7 49.Ke4 Nc2 50.Nd5 Ke8 51.e6+/–) 49.Ke4 (49.Ne4 Ke7+/–) 49...Nb4 (49...Ke7 50.Nd5 Ke8 51.Nc7 Ke7 52.Ne6+/–) 50.Kd4 (50.Nb5 Kd7+/–) 50...Nc6 51.Kd5 Ne7 52.Ke4 Kf7 53.Nb5 Kf8 54.Nc3 (54.e6 Kg8+/–) 54...Kf7 55.Kf4 Nc6 56.Nb5 Ke7 57.Ke4 Nb4 58.Nc3 (58.Nd6 c3 59.Nc8 Ke8+=) 58...Kf7 (58...Ke8 59.Nb5 Ke7 60.Nd6=) 59.Ne2 (59.Kd4 Nc6 60.Kd5 Ne7 61.Ke4 Ke8+/–) 59...Nc6 (59...Ke7 60.Nf4+=) 60.Kd5 (60.Nd4 Nd8+/–) 60...Ne7 61.Ke4 (61.Kc4 Nf5 62.Nf4 Ke8+/–) 61...Nc6 62.Kd5 (62.Nd4 Nd8+/–) 62...Ne7 63.Kc4 Nf5 64.Nf4 Ke7 65.Kd5 Ne3 66.Ke4 Nc4 67.Kf5 Nb6 (67...Ke8!?+/–) 68.Kg6 Nd7 69.Kg7 Ne5 70.Ng6 (70.Kh6 Nc4+–) 70...Ke6 (70...Ng6!? 71.hg6 h5+/–) 71.Kh6 Ng4 (71...Nd3 72.Kg7 Kf5 73.h6+–) 72.Kg5 Nf6 (72...Nf2 73.h6 Ne4 74.Kf4+–) 73.h6 Ne4 74.Kf4 Nf6 75.Ne5 (75.Nf8 Kd6+–) 75...Nh7 (75...Nh5 76.Kg5 Ke5+–) 76.Ng4 Kf7 (76...Nf6 77.Ne3+–) 77.Kf5 ½–½. Muse,Mladen (2455) – Jelen,Iztok (2380), Ljubljana op 5th, 1994.

6.Nc3 d5 7.d4 (7.Be2 Bd6=) 7...Nbd7 (7...c4 8.Be2=) 8.Be2 (8.dc5 Nc5 9.Be2 Bd6=+) 8...Bd6=+ 9.0-0 h6 (9...0-0 10.dc5 Nc5 11.Qd4=+) 10.h3 (10.dc5 Nc5 11.Qd2 Qc7=) 10...0-0=+ 11.Ba3 (11.Qd2 Qc7=+) 11...e5 (11...Qc7 12.Qd2=+) 12.de5 (12.Nh4 a6=) 12...Ne5=+ 13.Bb2 Qe7 (13...Re8 14.a3=+) 14.a4= Rfd8 15.Re1 (15.a5 ba5 16.Ra5 Nf3 17.Bf3 d4 18.ed4 cd4=+) 15...Ne4 16.Nd2 (16.a5 ba5 17.Nd2 Bc7=+) 16...Bc7 (16...Nd2 17.Qd2 Nc4 18.Bc4 dc4 19.Qe2=) 17.f4 Ng6 18.Nde4 de4 19.Qc1 Qh4 (19...Qe6 20.Rf1=+) 20.Bg4 (20.Bc4 Rd6=+) 20...h5 (20...Ne7 21.Kh2 Qg5 22.a5=+) 21.Bf5= Nf4 (21...Qe7 22.Bg6 fg6 23.Qb1=) 22.ef4 Bf4 23.Qb1 Qg3 24.Be4 Rd2 (25.Re2 Qh2 26.Kf2 Be4–+) 0–1. van Woerden,H – van Speybroeck,D, corr NED saldo, 1997.

6.c4 g6 7.d4 (7.Be2 a6=) 7...d6 8.dc5 bc5 9.Be2 Bg7 10.Nc3 0-0 11.0-0 Qc7 (11...a6 12.a4+=) 12.a4 a5 (12...Nbd7 13.Qd2+=) 13.Qd3 Nbd7 14.Rfd1 d5 15.cd5 ed5 16.Rac1 (16.Rdb1 Nb6+=) 16...Nb6 17.Nb1 (17.Qc2 Rac8=) 17...Rfe8 (17...Qe7 18.Be5+=) 18.Bd4 c4 (18...Nc4 19.Ba1+=) 19.Qa3 (19.Qc2 Qd6+=) 19...Ne4 (19...Rac8 20.Qb2 Qd6 21.Nc3+=) 20.Bg7 Kg7 21.Nfd2 (21.Qa1 f6+=) 21...Nc5 22.Nc3 Rad8 23.Nf3 Ne6 (23...Qd6 24.Qa2+=) 24.Nd4 (24.Qb2 Kg8+=) 24...Qd6 (24...Qe5 25.Qb2+=) 25.Qb2+/– Kg8 26.Ne6 Qe6 27.Rd4 (27.Bf3 Rc8+/–) 27...f5 28.Bf3 Rd6 29.Rcd1 Red8 30.Qd2 Qf7 31.e4! fe4 (31...de4 A pinning theme 32.Rd6 Theme: Double Attack) 32.Ne4! R6d7 (32...de4 Exploits the pin 33.Rd6 A double attack) 33.Nc5 Rd6 34.Nb7 (better is 34.Qa5!? Rf6 35.Nb7 Qb7+–) 34...Qb7+/– 35.Qa5 Qa8 36.Qa6 Qa6 37.ba6 Na4 (37...c3 38.Rc1+–) 38.Rd5 (38.a7 Nb6 39.Rd5 Rd5 40.Rd5 Rc8+–) 38...Rd5 39.Bd5 Kf8 40.Bf3 Rd1 41.Bd1 Nb6 42.a7 Ke7 43.Kf1 Kd7 (43...Kd6 44.Bf3+–) 44.Bf3 (44.Bf3 Kd6 45.Ke2+–) 1–0. Fournier,Frederic – Colnot,Cyril, corr Picardie–09ch, 1998.

6.c4 h6 7.d4 (7.Nc3 d5=) 7...g5 (7...a6 8.Bd3=) 8.Nc3 (8.Bd3 g4 9.Nh4 Rg8=) 8...d6 (8...a6 9.d5 Rg8 10.Be2+=) 9.dc5 (9.Bd3 cd4 10.ed4 g4=) 9...bc5 10.Qa4 (10.Rb1 Bg7+=) 10...Nfd7 (10...Bg7 11.Rd1=) 11.Ne2 (11.Be2 Bg7+=) 11...Rh7 (11...Rg8 12.Nd2=) 12.Qc2 (12.Qd1 g4 13.Nd2 Bg7 14.Bg7 Rg7+=) 12...f5 13.Rd1 (better is 13.h4 g4 14.Nd2=) 13...d5 (better is 13...a6!?=) 14.cd5+/– Bd5 15.Rd5 ed5 16.Qf5 Re7 (16...Qe7 17.Qd5 Nb6 18.Qd3+/–) 17.Qd5 Qa5 (17...Qc8 18.Bf6 (18.Qa8 Nb6 19.Qb8 Qb8-/+) 18...Nb6 19.Qd3+–) 18.Nc3 (18.Bc3!? Qc7+–) 18...Nb6 (18...Bg7 19.Qa8 Bc3 20.Bc3 Qc3 21.Nd2 Qa1 22.Ke2 Qa2+/–) 19.Qd2 (19.Qc5 N8d7 20.Qd4 Bg7+=) 19...c4? (better is 19...Bg7 20.Bd3 Rd7=) 20.Be2+– Rd7 21.Qc2 (better is 21.Nd4 Bb4 22.Bh5 Kf8 23.0-0+–) 21...a6 (21...Bg7!? 22.0-0+–) 22.Ne5 Rd5? (22...ab5 23.Bh5 Kd8 24.Nd7 N8d7 25.Bf3=) 23.Bh5 (better is 23.Qe4!? Re5 24.Qe5 Kd8 25.Qf6 Be7 26.Qh8 Kc7+–) 23...Kd8 24.Nf7 Kc8 (24...Kc7 25.Bf3 ab5 26.0-0+–) 25.0-0 (25.Bf3 Bb4 26.Bd5 Nd5 27.Qf5 Kc7 28.Qd5 Bc3 29.Ke2 ab5 30.Bc3 Qa2 31.Kf3+–) 25...ab5?? (25...Rc5 26.Rd1 N8d7+–) 26.Nd5 Nd5 (26...Nc6 27.Bg4 Kb7 28.Qh7+–) 27.Qf5 Nd7 28.Qd5 Ra7 29.Bg4 Qb4 (29...c3 30.Ne5 Rc7 31.Bd7 Kb8 32.Nc6 Rc6 33.Qc6 cb2 34.Qc8 Ka7+–) 30.Qc6 Kb8 31.Be5 Ne5 (31...Bd6 32.Bd6 Qd6 33.Nd6 Rc7 34.Qb5 Ka7 35.Qa5 Kb8 36.Rb1 Nb6 37.Rb6 Rb7 38.Rb7) 32.Qc8 1–0. Wall,Bill – Dykes,Ben, Dayton, OH, 1980.

6.bc6 dc6 7.d4 Be7 8.Bd3 0-0 9.0-0 c5 10.Nbd2 (10.dc5 Bc5 11.Qe2 Nc6=) 10...Nc6 (10...Na6 11.Nb3=) 11.c3 (11.dc5 Bc5 12.Ng5 e5=) 11...e5 (11...Rc8 12.Ba3=) 12.Qb1= ed4 13.cd4 cd4 14.Nd4 Nb4 (14...Nd4 15.Bd4 Qd5 16.f3=) 15.Bc4 (15.Bf5 Re8+=) 15...g6 (15...Rc8 16.Nf5+=) 16.Rd1 Rc8 17.Ne6 (better is 17.a3!? Nc6 18.Nf5+/–) 17...fe6+= 18.Be6 Kg7 19.Ne4 (19.Ne4 Nbd5 20.Nf6 Bf6 21.Bd5 Bd5 22.e4 Be4 23.Qe4= (worse is 23.Rd8 Bb1 24.Bf6 Kf6 25.Rf8 Rf8 26.Rb1 Rd8+=)). Nemec,Zdenek – Kolar,Jaroslav, Friendly match, 1990.

6.d3 a5 7.Nbd2 Be7 (7...d5 A) 8.e4 Be7 (8...Nbd7 9.e5 Nh5 10.g3 a4 11.Bh3 a3 12.Bc1 g6) 9.e5 Nh5 10.Be2 Nf4 11.0-0 0-0 12.g3 Ne2; B) 8.h3 Nbd7 (8...Be7 9.c4 Nbd7 10.Be2 0-0 11.0-0 Bd6 12.Rc1 h6) 9.Be2 Bd6 10.0-0 0-0 11.c4 Qc7 12.Qc2 h6; C) 8.Be2= Be7 (8...Nbd7 9.0-0 Be7 10.e4 Qc7 11.c4 0-0 12.Qc2 d4) 9.Ne5 Qc7 10.Ndf3 Nbd7 11.0-0 Bd6 12.Nd7 Qd7; 7...d6 A) 8.g3 d5 (8...Nbd7 9.Bg2 d5 10.0-0 Be7 11.e4 0-0 12.e5 Nh5) 9.Bg2 Nbd7 10.0-0 Be7 11.e4 0-0 12.e5 Nh5; B) 8.c4 Nbd7 (8...Be7 9.Be2 Nbd7 10.0-0 0-0 11.Qc2 Qc7 12.h3 h6) 9.Be2 Be7 10.0-0 0-0 11.Qc2 Qc7 12.h3 h6; C) 8.Be2 Nbd7 (8...Be7 9.Nc4 Nbd7 10.0-0 0-0 11.Qd2 Qc7 12.g3 Bf3) 9.0-0 Qc7 10.e4 Be7 11.Nc4 0-0 12.Qd2 d5; 7...h5 A) 8.Be2 d5 (8...h4 9.h3 d5 10.c4 Nbd7 11.0-0 Bd6 12.cd5 ed5) 9.0-0 Nbd7 10.Re1 Qc7 11.Ng5 Bd6 12.h3 g6; B) 8.Ng5 Be7 (8...d6 9.Be2 Bg2 10.Rg1 Bb7 11.Bf3 d5 12.e4 Ng4) 9.Nc4 d6 10.e4 0-0 11.Be2 d5 12.ed5 ed5; C) 8.e4 d6 (8...a4 9.Be2 a3 10.Be5 d6 11.Bf4 e5 12.Be3 Ng4) 9.Be2 Nbd7 10.0-0 Be7 11.Ng5 0-0 12.f4 g6) 8.Rg1 (8.Be2 d5= (8...0-0 9.0-0 d5 10.Ne5 Qc7 11.f4 Nbd7 12.Ndf3 Ne5) 9.Ne5 Qc7 10.0-0 Nbd7 11.Ndf3 Bd6 12.Nd7 Qd7; 8.g4 h6 (8...0-0 9.g5 Ne8 10.h4 Nc7 11.c4 d5 12.h5 Bg5) 9.Be2 d5 10.Rg1 Nbd7 11.h4 Qc7 12.g5 Nh5; 8.g3 0-0 (8...d5 9.Bg2 Nbd7 10.0-0 0-0 11.c4 Qc7 12.Qa4 Bd6) 9.Bg2 d5 10.0-0 Nbd7 11.c4 Qc7 12.Qa4 h6) 8...d6 (8...h5 9.h3= (9.Be2 d5 10.Ne5 Qc7 11.f4 Nbd7 12.Kf2 Bd6) 9...d5 10.g4 hg4 11.hg4 Nbd7 12.g5 Nh5; 8...d5 9.Ne5 Qc7 10.g4 h6 11.Ndf3 Nbd7 12.Qd2 Ne5; 8...h6 9.Nc4 d5 10.Nce5 Qc7 11.a4 Nbd7 12.Nd7 Qd7) 9.g4+= h6 10.h4 e5 (10...Nbd7 11.g5 hg5 12.hg5+= Nh5) 11.g5 hg5 12.hg5 Nd5 (12...Nfd7+/–) 13.d4 (better is 13.c4 Nc7 14.g6+=) 13...Ne3?? (better is 13...a4 14.a3 cd4 15.ed4 Qc7 16.de5 Nc3+=) 14.fe3+– e4 15.Ne4 (15.dc5!? bc5 16.Ne4 Be4 17.Bg7+–) 15...Be4+= 16.Bd3 Bd3 (16...d5 17.dc5 Bc5 18.Bg7 Rh3 19.Be4 de4 20.Qd8 Kd8 21.0-0-0 Nd7+/–) 17.Qd3+/– Nd7 (17...c4 18.Qc4 d5 19.Qd3+/–) 18.0-0-0+– Rc8 (18...a4 19.Rh1 Rh1 20.Rh1+–) 19.g6 f6? (better is 19...Bf6 20.gf7 Kf7 21.Qg6 Kf8+–) 20.Qc4 Rf8 21.d5 (21.Nh4 f5 22.Qe6 c4 23.Nf5 Rf5+–) 21...Ne5?? (better is 21...Rc7+–) 22.Be5 fe5 23.Ne5! Bg5 (23...de5 24.d6 Passed pawn) 24.Nc6 Be3 (24...Rc6 25.dc6 Qe7 26.Rg5+–) 25.Kb1 Rf4 26.Qf4 (better is 26.Qe2 Qf6 27.Qe3 Kd7 28.Rge1 Rb4 29.Nb4 ab4 30.Qe6 Qe6 31.Re6+–) 26...Bf4 27.Nd8 Rd8 28.Rgf1 Be5 29.Rf7 (29.Rf7 Rd7 30.Rdf1+–) 1–0. Rouleau,John S (2265) – Pendergast,Michael J (2140), 37th National Chess Congress, Philadelp, 2006.

6.d3 d5 7.c4 Nbd7 8.d4 Rc8 (8...cd4 9.Qd4 Bc5 10.Qf4+=) 9.Nbd2 (9.Nc3 cd4 10.Qd4 dc4-/+) 9...Be7 (9...cd4 10.Bd4 Bd6 11.Rc1=) 10.Be2 (10.Rc1 0-0=) 10...cd4 11.Nd4 (11.Bd4 dc4 12.Rc1 Bb4=) 11...Nc5 (11...dc4!? 12.Bc4 Bb4+=) 12.0-0 (12.cd5 Bd5 13.f3 0-0=) 12...0-0 13.a4 (13.cd5 Nd5 14.Rc1 Bf6=) 13...Qc7+= 14.N4b3 (14.N4f3 Rfd8+=) 14...Nfd7 (14...Nb3 15.Qb3 Nd7 16.Qc3=) 15.cd5= ed5 (15...Bd5 16.Nc5 Nc5 17.Bc4=) 16.Nc5 (16.Rc1 Rfe8+=) 16...bc5= (worse is 16...Qc5 17.Ba3 Qa3 18.Ra3 Ba3 19.Nb3+–; 16...Nc5?! 17.Rc1+=; worse is 16...Bc5 17.Bd3+=) 17.Nf3 (17.Bd3 c4 18.Bf5 g6 19.Bd7 Qd7=) 17...Bf6 18.Bf6 Nf6 19.Rc1 (19.a5 Rfe8=) 19...Ne4 (19...Rfe8 20.Bd3=) 20.Qc2 (20.Nd2 Qe5=) 20...f5 21.Nd2 White gets deadly initiative 21...Qa5 (better is 21...Qe5!?=) 22.Ne4+/– fe4 (22...de4 23.Rfd1+/–) 23.Bg4 Rc7 24.Be6 Kh8 25.Rfd1 Rd8 Black prepares d4 (25...a6 26.Bd5 ab5 27.Bb7 Rb7 28.Qc5+–) 26.Qe4! d4 (26...de4 A pinning theme 27.Rd8 The nicest combinations are those leading to) 27.Qh4+– Do you see the mate threat? 27...Rd6? (27...Re8 28.Bf5 g5 29.Qg4+– (worse is 29.Qg5 Rg7 30.Qh5 Re5+/–)) 28.Bf5 (better is 28.ed4!? h6 29.d5 Bc8+–) 28...g6 29.Bc2 (29.Be4 Kg8 30.ed4 Qa4+–) 29...Qc3?? (better is 29...Rcd7+–) 30.Qf4 (30.Qf4 Kg7 31.Qe5 Rf6 32.Qc7 Rf7 33.Qe5 Rf6 34.ed4+–) 1–0. Cattaneo,R – Jamme,J, Marseille, 2003.

6.d3 d6 7.Nbd2 Nbd7 8.Be2 h5 (8...Be7 9.0-0=) 9.a4 a5 10.c4 Qc7 11.Qc2 d5 12.cd5 Nd5 13.Nc4 Nb4 14.Qb3 Bd5 15.Rc1 Rd8 16.0-0 Nf6 17.e4 Bc4 18.Rc4 Be7 19.Ne5 Ng4 20.Ng4 hg4 21.g3 e5 22.f4 (22.Rd1!?+=) 22...gf3= 23.Rf3 Bf6 24.Rc1 0-0 25.Qc4 Qe7 26.Rcf1 Rd6 27.Ba1 Qe6 28.Qc1 (better is 28.Qe6!? Re6 29.Bc3=) 28...Qa2-/+ 29.R1f2 Qa4 30.Bf1 (30.Bb2 Ra8-/+) 30...Re8 31.d4 ed4 (31...cd4 32.Ra3 Bg5 33.Qc7 (33.Ra4?? Bc1 34.Bc4 Rd7–+) 33...Qa3 34.Qf7 Kh7 35.Qe8=) 32.Bb2 Re4?? (better is 32...d3 33.Bf6 gf6+=) 33.Ra3= Qa3 34.Ba3 d3 35.Bb2 Bd4 (35...Bb2 36.Rb2 Rde6 37.Qd2-/+) 36.Bd4+= Red4 37.Rd2 Kf8 38.Qd1 g6 39.h4 c4 40.Qa1 Ke7 41.Bg2 Kf8 42.Bf3 Nc2 43.Qa3?? (43.Qc3 f5=) 43...Ne3 (better is 43...Na3 44.Ra2 Nb5–+) 44.h5 (44.Qc3 f5=) 44...g5 (44...gh5 45.Bh5 R4d5 46.Rf2=) 45.h6 1–0. Josefsson,Kenneth (2370) – Stolyar,Sergey Efimovich (2470), ICCF corr W–23ch sf05, 1999. (=1.e3 Nf6 2.Nf3 b6 3.b4 Bb7 4.Bb2 e6 5.b5 c5)

6.d3 Be7 7.Be2 0-0 8.0-0 d5 9.c4 Nbd7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

6.Bd3 d5 7.Be5 Bd6 8.0-0 0-0 9.Qc1 Be5 10.Ne5 Nbd7 11.Qb2 Qc7 12.Nd7 Qd7 13.a4 Rfe8 Black plans d4 14.a5 d4 15.Na3 e5 16.ed4 ed4 17.f3 Bd5 18.c3 dc3 19.dc3 Re3 (19...Rad8 20.Rfd1 Qe7 21.ab6 ab6 22.Qf2=) 20.Rad1 Qc7 (20...ba5? 21.c4 Rc8 22.cd5+-) 21.c4 Bb7? (better 21...Be6=) 22.a6+- Bc8 23.Be4! Ne4 (better 23...Ng4!? 24.g3 Re4 25.fe4 Be6+/-) 24.Qe5!+- (24.fe4 Re4 25.Rfe1 Bf5-/+) 24...Nd6 (24...Qe5 25.Rd8 Mate attack) 25.Qe3 Be6 26.Qe5 Ne8 27.Qc7 Nc7 28.Kf2 Ne8 29.Rd2 Nf6 30.Rfd1 h6?? (30...Re8+-) 31.Rd8 Rd8 32.Rd8 Kh7 33.Ra8 Nd7 (33...Ne8 34.Re8 h5 35.Re7+-) 34.Ra7 Ne5 35.Re7 Nc4 36.a7 Bd5 37.Nc4 1-0. marekt (2115) - vlladimir (1630), gameknot.com, 2014.

6.d4 cd4 7.Nd4 Bb4 8.Bc3 (8.c3 Bf8 9.Nd2=) 8...Nd5 (8...Bc3 9.Nc3 Qc7 10.Nce2=+) 9.Qd3 (9.Bb4 Nb4 10.Qd2 Nd5+=) 9...Qc7 (9...Nc3 10.Nc3 Qc7 11.Nde2-/+) 10.Bd2 (10.Bb4 Nb4 11.Qd2 Nd5=) 10...Bd2 11.Nd2 Nb4 (11...e5!? 12.e4 Nf4=) 12.c3?? (better 12.Qc4 Qd6 13.c3+=) 12…Nd3–+ (12...Nd3 13.Bd3 Bg2–+) 0–1. aravind555 – Poligrafika (1685), lichess.org, 2018.

6.Be2 Bd6 7.g3 Bc7 8.0-0 0-0 9.d4 cd4 10.ed4 d5 11.Qd3 Nbd7 12.Ba3 Re8 13.Nc3 e5 14.de5 Ne5 15.Ne5 Be5 16.Rae1 Rc8 17.Na4 d4 18.f4 Bd6 19.Bd6 Qd6 20.c3 Re3 21.Qd4 Qd4 22.cd4 Ra3 23.Bd1 Ra2 24.Re2 Re2 25.Be2 Rc2 26.Bf3 Ne4 27.Re1 f5 28.Bd1 Ra2 29.Bb3 1–0. mtra – TT12, internet, 2002.

6.Be2 Bf3 7.Bf3 d5+=.

6.g3 Be7 7.Bg2 0-0 8.0-0 a6 9.ba6 Na6 10.Re1 d5 11.a3 Nc7 12.d3 d4 13.Nbd2 de3 14.Re3 Ncd5 15.Re1 Rb8 16.c4 Nc7 17.Qc2 b5 18.cb5 Nb5 19.a4 Nd4 20.Nd4 cd4 21.Bb7 Rb7 22.Ba3 Ba3 23.Ra3 Rc7 24.Nc4 h6 25.Qe2 Nd5 26.a5 Ra7 27.a6 Qd7 28.Qa2 Rfa8 29.Rb1 Qc6 30.Na5 Qa6 31.Nc4 Nc3 32.Ra6 Na2 33.Rab6 Nc3 34.Rb8 Rb8 35.Rb8 Kh7 36.Ne5 f6 37.Nc6 Ra1 38.Kg2 e5 39.Nd8 Kg6 40.h4 Rd1 41.Ne6 Rd3 42.Rb7 Kf5 43.Ng7 Ke4 44.Nh5 Nd1 45.Re7 f5 46.Nf6 1–0. jolubolu (1730) – tufak (1735), lichess.org, 2019.

7.Be2 d5 8.0-0 dc4 9.Na3 Be7=.

7.Be2 d5 8.0-0 dc4 9.Bc4 Bd5 10.Bd5 Nd5 11.Na3 Nd7 12.Nc4 N5f6 (12...a4 13.d4+=) 13.Qc2 Be7 14.d4 0-0 15.Rfd1 Qc7 16.Rac1 Rac8 17.Ng5 (17.dc5 Bc5 18.Nfe5 Rfd8+=) 17...g6 (17...cd4 18.Bd4 Rfd8 19.Qb2=) 18.Qe2 h6 19.Nf3 Rfd8 20.Nfe5 Bf8 (better 20...Ne5!? 21.Ne5 Nd5+–) 21.Nc6 Re8 22.Qf3 (better 22.dc5 Bc5 23.N4a5+–) 22...Bg7? (better 22...Nh7+–) 23.dc5+– bc5 24.Nd6 Nd5 (24...Ra8 25.Bf6 Nf6 26.Ne8 Re8 27.Rc5 Qb6+–) 25.Qf7 Kh8 26.Qg7 1–0. DEFFM – GuestTZKT, freechess.org, 2019.

7.Be2 d5 8.0-0 dc4 9.Bc4 Nbd7 10.a4 Qc7 11.h3 Bd6 12.d3 Ne5 13.Nbd2 0-0 14.e4 (14.Rc1 Nf3 15.Nf3 Nd5=) 14...Rad8 15.Qc2 Rd7 16.Bc3 Rfd8 17.Qb2 Nc4 18.Nc4 Be7?? (better is 18...Nh5=) 19.Be5+– Bd6 20.Nd6 Rd6 21.Bd6 Qd6 (21...Rd6 22.e5 Rd4 23.Nd4 (23.ef6?! Bf3 24.gf3 Qe5+–) 23...Qe5 24.f4 Qe3 25.Rf2 cd4 26.Qa3+–) 22.e5 Qd3 23.Ra3 Qf5 24.ef6 gf6 (24...Qf6 25.Qf6 gf6 26.Rc1+–) 25.Qc1 Kg7 26.Nh4 Qe4 (26...Qh5 27.Rg3 Kh8 28.Nf3+–) 27.Rg3 Kf8 28.Rg4 Qb4 (28...Qd3 29.Qh6 Ke7+–) 29.Qh6 Ke7 30.Rb4 cb4 (30...ab4 31.Re1 e5 32.Nf5 Ke6 33.g4+–) 31.Qh7 b3 (31...e5+–) 32.Ng6 Kd7 33.Qf7 (33.Rc1 Re8 34.Qf7 Kd6 35.Qc7 Kd5 36.Rd1 Ke4 37.Qf4) 33...Kc8 34.Ne7 Kb8 35.Nc6 Bc6 36.bc6 e5 (36...Rd7 37.Qd7 b2 38.Qb7) 37.Qb7 1–0. DEFFM – GuestGLBZ, freechess.org, 2018.

7.Be2 d6 8.0-0 Nbd7 (8...Be7 9.Nc3=) 9.Ng5 (9.Nc3 Be7=) 9...h6= 10.Bf3 (10.Nf3 Be7=) 10...d5+= (worse is 10...hg5 11.Bb7 Rb8 12.Bc6+/–) 11.Nh3 Bd6 12.cd5 ed5 13.d4 c4 14.Nc3 (14.Qc2 Qe7+=) 14...g5 15.e4? (better is 15.a4!?+=) 15...de4–+ (worse is 15...Ne4 16.Ne4 de4 17.d5-/+) 16.Re1 Kf8 (16...0-0!? 17.Ne4 Ne4 18.Re4 Be4 19.Be4 Ra7–+) 17.Ne4 (17.Be4 Ne4 18.Ne4 Be4+=) 17...Be4 18.Be4 Ne4 (18...g4 19.Ba8 Qa8 20.d5=) 19.Re4 Nf6 20.d5 Ne4 21.Bh8 Bc5 (better is 21...Qc7 22.f3 Kg8+=) 22.Qh5? (better is 22.Rc1!?=) 22...Qd6-/+ 23.Rc1? (better is 23.Kh1!? Qg6 24.Qg6 fg6 25.Rc1–+) 23...Kg8–+ 24.Re1 (24.Qe2 Qd5 (24...Kh8?! 25.Qe4 Rd8 26.Rc4-/+) 25.Rd1 Qe6–+) 24...Re8 (24...Kh8?! 25.Re4 Kg7 26.Qd1–+) 25.Ba1 c3 26.Bc3 Re7 27.Re4?! (27.Qf3 Qd5 28.g3 Nc3 29.Qc3 Re1 30.Qe1 Qa2 31.Qe8 Kg7–+) 27...Re4 28.Ng5 (28.g3 Bd4 29.Bd2–+) 28...Qf4 (28...Qf4 29.Qf7 Qf7 30.Nf7 Kf7–+) 0–1. DEFFM – GuestHKVM, freechess.org, 2018.

7.0-0 0-0 8.Nc3=.

7.0-0 0-0 8.c4 d5 9.d3 Nbd7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

7.0-0 d6 8.c4 0-0 9.d4 Nbd7 10.Nbd2 Rc8 11.Rc1 Rc7 12.a4 cd4 13.ed4 d5 14.a5 dc4 15.a6 Ba8 16.Rc4 Nd5 17.Ne5 Nf4 18.Bf3 Ne5 19.de5 Rd7 20.Rf4 Rd2 21.Qa1 Bg5 22.Rc4 (22.Rg4 Bf3 23.gf3 f5-/+) 22...Bf3-/+ 23.gf3 Qd5 24.Rg4 Be7 (24...Qb5?! 25.Ba3 Bd8 26.Bf8 Kf8 27.Rd1 Rd1 28.Qd1+=) 25.Bc1 Rd1 (25...Qf3 26.Rg3 Qe2 27.Bd2 Qd2 28.Qc1+=) 26.Qb2 Qf3 27.Rg3 Rf1 28.Kf1 Qd1 (28...Qh1!? 29.Ke2 Rd8 30.Bd2–+) 29.Kg2 Qd5 30.Kg1 Rc8 (30...Bh4 31.Rb3 Qd1 32.Kg2 Qg4 33.Kf1 Rd8–+) 31.Be3? (31.Bh6 Bf8 32.Be3 Rc4–+) 31...g6 (better is 31...Bh4!?–+) 32.h3 Rc4 33.Kh2 Rb4 34.Qc3 Rb1 35.Rg2 Kg7 36.Qc7 Bh4 37.Qd6 Qb5 (better is 37...Rb5 38.Qd5 Rd5–+) 38.Bh6?? (better is 38.Rg4 Bf2 39.Bf2=) 38...Kh6–+ 39.Qf8 Kh5 40.Qf7 Qe5 41.f4 Qh8 42.Qa7 Kh6 43.Qf7 (43.Qb7 Qc3 44.Qe4–+) 43...Qa1 44.Qf8 (44.Qg7 Kg7 45.Rg6 hg6 46.Kg2 Qc3 47.a7 Qg3) 44...Kh5 45.Rg5 (45.Qc5 bc5 46.Rg3 Rh1 47.Kg2 Qf1) 45...Bg5 46.fg5 (46.Qa3 Rh1 47.Kg3 Qe1 48.Kf3 Rf1 49.Kg2 Qf2) 46...Rh1 (46...Rb2 47.Kg3 Qe1 48.Kf4 Rf2 49.Kg3 Qg1) 47.Kg2 (47.Kg3 Qg1 48.Kf4 Qh2 49.Kf3 Rf1 50.Ke3 Re1 51.Kd3 Qe2 52.Kc3 Rc1 53.Kb3 Qd3 54.Ka4 Ra1 55.Kb4 Rb1 56.Ka4 Qa6) 47...Qg1 48.Kf3 Qf1 49.Ke4 Qf8 (49...Qe2 50.Kd4 Rd1 51.Kc3 Qd3 52.Kb2 Rb1 53.Ka2 Qb3) 50.a7 (50.Ke5 Re1 51.Kd4 Qa3 52.a7 Qb3 53.a8Q e5) 50...Qf5 51.Kd4 Rd1 (51...Rh3 52.a8Q Qc5 53.Ke4 Qe3) 52.Kc4 Qd5 (52...Qc2 53.Kb5 Rb1 54.Ka6 Qc8) 53.Kc3 Rd3 (53...Rd3 54.Kc2 Qb3 55.Kc1 Rd1) 0–1. Panzer,Bernhard (1860) – Muehlbauer,Peter (1980), Regionalliga N O9495, 1995.

7.c4 (--> 6.c4 Be7 7.Be2).

7.a4 ab5 8.ab5 Ra1 9.Ba1 d6 10.d3 Nbd7 11.Nbd2 Be7 12.Be2 0-0 13.0-0 Qc7 14.Qc2 Ra8 15.Bb2 d5 16.d4 cd4 17.Nd4 Ne5 (17...Bd6 18.f4=+) 18.cd5 Qc2 (worse 18...Nd5 19.Qc7 Nc7 20.Ne6 Ne6 21.Be5+/-) 19.Nc2 Ra2 20.Be5 Rc2 21.Rd1 Bd5 22.Bd3 Ra2 23.Bd4 Bc5? (better 23...Nd7!?+=) 24.Bc5+/- bc5 25.e4 Bb7 (25...Ba8!? 26.Nb3 Kf8 27.Nc5 Ng4+/-) 26.Nb3 Ng4?? (26...Kf8 27.Nc5 Ba8+-) 27.Bb1 (27.Bb1 Ra8 28.Nc5 Be4 29.Be4+-; 27.Nc5 Nf2 28.Bb1 Nd1 29.Ba2 Nc3 30.Nb7 Na2+-) 1-0. onur604 (2320) - Khalimirov (2220), Casual Rapid game, lichess.org,2021.

7.Nc3 ab5 8.Nb5 Be7 9.Bf6 gf6 10.Rg1 Nc6 11.a3 Rg8 12.d4 cd4 13.ed4 Qb8 14.g3 Na7 15.Nc3 Nc8 16.Qd3 f5 17.a4 Bb4 18.Nd2 Bc6 19.Bh3 Ne7 20.Nb5 Rg6 21.Bg2 Rh6 22.h4 Bg2 23.Rg2 Rg6 24.Qb3 Nc6 25.Rd1 f4 26.g4 f3 27.Qf3 Ra4 28.h5 Rg8 29.Qb3 Ra8 30.Qe3 Ra2 31.Kf1 Bd2 32.Rd2 Ra1 33.Ke2 Na5 34.Rc2 Rg7 35.Qh6 Kf8 36.Qf6 Nc6 37.g5 Qd8 38.Qd8 Nd8 39.Rg3 Ke7 40.Ke3 d6 41.f4 Nb7 42.Kd3 Rg8 43.Rb2 Na5 44.Nc3 Rc8 45.Rb6 Rc4 46.Ra6 d5 47.Re3 Rc3 48.Kc3 Ra3 49.Kb4 Re3 50.Ra5 Rf3 51.Ra7 Ke8 52.Kc5 Rc3 53.Kd6 Kf8 54.h6 Rc8 55.Ke5 Kg8 56.Kf6 e5 57.fe5 Rc6 58.Ke7 Rc8 59.Rd7 Rb8 60.Rd8 Rd8 61.Kd8 f6 62.e6 fg5 63.e7 Kf7 1–0. COMP – COMP, 2002.

7.Nc3 g6 8.a4 ab5 9.Nb5+= Na6 10.Be5 Be7 11.Be2 0-0 12.Nd6+= Bc6 13.0-0 Nb4 14.Nb5 d6= 15.Bf4 Kg7 16.Qb3 Nh5 17.Bg3 Ng3 18.hg3 f5 19.Kh2 Qd7 20.Rh1 Ra5 21.d4 Rfa8 22.Bd1 Bf6-/+ 23.Ra3 d5 24.dc5 bc5-/+ 25.Be2 e5 26.Nd2 d4 27.ed4-/+ ed4 28.Nf3 Qf7 29.Nd6?? Qe7 (29...Qe7 30.Nf5 gf5–+) 0–1. mic (2250) – vanadis (2415), net–chess.com, 2008.

8.a4 0-0 9.Be2 d5 10.cd5 ed5 11.d4 c4 12.0-0 Re8 13.Qc2 Bd6 14.Rfb1 Qe7 15.ba6 Ra6 16.Nb5 Nc6 17.Nd6 Qd6 18.Ba3 Qe6 19.Rb5 Ne4 20.Bd1 Rc8 21.Nd2 Nf6 22.Qc3 Nb8 23.a5 Ra5 24.Ra5 ba5 25.Qa5 c3 26.Nf3 Ne4 27.Qa7 Qa6 28.Qa6 Ba6 29.Ne1 Bc4 30.Bc2 Na6 31.Rc1 Rb8 32.Be4 Rb3 33.Bd5 Bd5 34.Bd6 f5 35.f3 Kf7 36.Kf2 Ke6 37.Be5 Nb4 38.Bg7 Na2 39.Ra1 Rb2 40.Kg3 c2 41.Nc2 Rc2 42.Bh6 Bc4 43.Bg5 Nc3 44.Kh3 h5 45.Ra5 Bf1 46.Re5 Kd7 47.Rf5 Rg2 48.Kh4 Rh2 49.Kg3 Rh3 50.Kf2 Rh1 51.Rf7 Kd6 52.e4 Nd1 53.Kg3 Rh3 54.Kf4 Bg2 55.e5 Kc6 56.Ke4 Nc3 57.Ke3 Nd5 58.Kf2 Bh1 59.Bd8 Kb5 60.Rf5 Kc4 61.e6 Kd4 62.e7 Ne7 63.Be7 h4 64.Bf6 Kc4 65.Rf4 Kd5 66.Rd4 Ke6 67.Rf4 Kd7 68.Ke3 Kd6 69.Ba1 Rh2 70.Bc3 h3 71.Rh4 Bg2 72.Ke4 Rh1 73.Be5 Kc5 74.Bg3 Rf1 75.Rf4 Rd1 76.Rg4 Rd8 77.Ke3 Ra8 78.Rf4 Ra3 79.Ke4 Kd6 80.Kf5 Kd5 81.Kg4 Re3 82.Rf5 Kc4 83.Rf6 Re7 84.Rc6 Kd4 85.Rg6 Rh7 86.Bh2 Ke3 87.f4 Kf2 88.f5 Be4 89.Rb6 Bf5 90.Kf5 Rh4 91.Rb2 Kf3 92.Rb3 Kg2 93.Kg5 Rh8 94.Rb2 Kf1 95.Kg4 Rh7 96.Bg3 Rh6 97.Kf3 Rf6 98.Bf4 Re6 99.Rh2 Rg6 100.Rh3 Rg2 101.Rh1 Rg1 102.Rh2 Rg8 103.Rh6 Rg2 104.Rh4 Rf2 105.Ke4 Ke2 106.Be3 Rg2 107.Bc5 Kd2 108.Rf4 Re2 109.Kd5 Re8 110.Rf2 Kd3 111.Rf3 Ke2 112.Rf5 Kd3 113.Bb6 Re7 114.Rf3 Ke2 115.Rf2 Kd3 116.Rf5 Rd7 117.Ke5 Re7 118.Kd6 Re2 119.Rd5 Kc4 120.Rc5 Kd3 121.Rf5 Ke4 122.Ra5 Kf4 123.Kd7 Rd2 124.Ke6 Re2 125.Kf6 Ke4 126.Rh5 Ra2 127.Re5 Kd3 128.Rd5 Kc4 129.Ke5 Re2 130.Kd6 Re8 131.Rc5 Kd3 132.Rh5 Rb8 133.Kc6 Ke4 134.Rh4 Kf5 135.Bc5 Rc8 136.Kd5 Rd8 137.Bd6 Kg5 138.Rh1 Kf5 139.Rf1 Kg4 140.Re1 Kf5 141.Re2 Kg5 142.Rg2 Kf5 143.Rf2 Kg5 144.Ke6 Re8 145.Be7 Kg4 146.Rc2 Kf4 147.Rc4 Ke3 148.Rg4 Kf3 149.Rd4 Ke3 150.Kd5 ½–½. COMP – COMP, 2002.

8.Be2 0-0 9.0-0 d5 10.ba6 Na6 11.d3 dc4 12.dc4 Qb8 13.Qb3 Bc6 14.Rfd1 Ng4 15.h3 Nf6 16.Rab1 Rd8 17.Rd8 Bd8 18.Rd1 Ne8 19.Nd2 Bf6 20.Bf3 Bf3 21.Nf3 Nb4 22.a3 Nc6 23.Qc2 Nd6 24.Nd2 Na5 25.Qd3 Qd8 26.Qe2 Qc7 27.Nb5 Nb5 28.Bf6 Nd6 29.Qg4 Ne8 30.Bb2 Rd8 31.Bc3 Rd3 32.Rc1 Qd7 33.Qe2 f5 34.e4 f4 35.Rc2 Nc6 36.e5 Nc7 37.Nf1 Ne7 38.Rd2 Rd2 39.Nd2 Qa4 40.Qd3 Qc6 41.Ne4 Ng6 42.Qd8 Nf8 43.Nd6 Na8 44.Bd2 f3 45.Bg5 fg2 46.Be7 Qf3 47.Ne4 Nc7 48.Bf8 Qf8 49.Qc7 Qa8 50.Nd6 Qf8 51.Qb6 Qf4 52.Qc5 Qc1 53.Kg2 Qg5 1–0. COMP – COMP, 2002.

8.Be2 0-0 9.0-0 d5 10.ba6 Na6 11.d3 dc4 12.dc4 Qc7 13.Nb5 Qc6 14.Qb3 Nc7 15.Nc7 Qc7 16.Be5 Bd6 17.Bf6 gf6 18.h3 Rfd8 19.Rfd1 Bc6 20.Qb2 Kg7 21.a3 Qa7 22.Qc3 Be4 23.Ra2 Qa4 24.Rad2 Bf3 25.Bf3 Be5 26.Qc1 Rd2 27.Qd2 Ra7 28.Qd3 Qa3 29.Qe4 Qc3 30.Qg4 Kf8 31.Rd8 Ke7 32.Rd1 Ra2 33.Qg8 Rd2 34.Rd2 Qd2 35.g4 f5 36.Bc6 Qc1 37.Kg2 fg4 38.Qe8 Kf6 39.Qh8 Kg6 40.Qe5 gh3 41.Kh3 Qc4 42.Kg3 h6 43.f4 b5 44.Be4 f5 45.Bc6 Qb3 46.Be8 Kh7 47.Qc7 Kh8 48.Qc5 Qb2 49.Bb5 Kh7 50.Qe7 Qg7 51.Qg7 Kg7 52.Kh4 Kf6 53.Kh5 e5 54.Kh6 ef4 55.ef4 Ke6 56.Kg5 Kd5 1–0. COMP – COMP, 2002.

7.Na3 Nbd7 8.Be2 Qc7 (8...Bd6 9.cd5 Bd5 10.d3=) 9.Nc2 (9.cd5 Bd5 10.d3 Bd6=) 9...Bd6+= 10.h3 (10.Rc1 0-0+=) 10...0-0 11.d3 (11.0-0 a6+=) 11...Rad8 (11...dc4 12.dc4 Rfd8 13.0-0+=) 12.Qc1 (12.Na3 e5+=) 12...Rfe8 (12...dc4 13.dc4 e5 14.0-0+=) 13.a4 (13.cd5 Bd5 14.0-0 e5+=) 13...e5 (13...dc4 14.dc4 Be4 15.a5+=) 14.cd5 Nd5 15.e4 (15.0-0 N7f6+=) 15...Nf4 16.Ne3 Nf6 (16...Ne2 17.Ke2 Nf8 18.Rd1+=) 17.Qc4 (17.Qc2 Ne2 18.Qe2 a6+=) 17...Qd7 (17...Bc8 18.a5-/+) 18.g3 (18.Bf1 Ne6+=) 18...Ne2-/+ 19.Ke2 Bc7 Attacking the backward pawn on d3 (19...Bc8 20.Qc3+=) 20.g4 (better is 20.Qc2+=) 20...g6 (20...Re6 21.Ng5 Re7 22.a5+=) 21.Rag1 (21.g5!? Nh5 22.Ng4+=) 21...Kg7+= 22.Bc3 Qe7 (22...Kh8 23.Rd1 Bd6 24.Ke1=) 23.Nh4 (23.h4!?=) 23...Bc8+= 24.f4 (better is 24.Nf3+=) 24...Be6 (better is 24...Kg8!? 25.Be5 Be5 26.fe5 Ne4-/+) 25.Nhf5+= gf5 (25...Bf5 26.gf5 Qd7 27.fg6 hg6 28.f5+=) 26.gf5 Kh8 (26...Kf8!? 27.fe6 Qe6 28.Qe6 Re6+=) 27.fe6+/– Qe6 28.Qe6 Re6 29.f5 (29.Rg5 Nd7+/– (29...ef4 30.Ng4 c4 31.Nf6 cd3 32.Kd2+–)) 29...Re7 (29...Ree8 30.Nc4+/–) 30.Nc4 (30.Be1 Nh5 31.Bh4 f6+/–) 30...Nh5 (30...h6 31.Be1 Nh5 32.Bh4+/–) 31.Rg4 f6 32.Nb2 (32.Rd1 Rg7+=) 32...Rg7 33.Rg7 Nf4 34.Ke3 Kg7 35.Rg1 (35.Bd2 Kf7=) 35...Kf7 36.h4 (36.Rg3 Nh5 37.Rg4 Nf4=) 36...Rg8 (36...Bd6!?=) 37.Rg8+= Kg8 38.Kf3 Nh5 (38...Kf7 39.Bd2+/–) 39.Bd2+/– Ng7 40.Nc4 (40.Nd1 Kf7+/–) 40...Ne8 (40...Nh5 41.Na3+/–) 41.Ne3 (41.h5 Kf7+/–) 41...Kf7 (41...h5 42.Ke2+/–) 42.Nd5 (42.Kg4 Bd6+/–) 42...Bd8 (42...Bd6 43.h5+/–) 43.h5 Nd6 (43...Be7 44.h6+/–) 44.Bc3 (44.h6 Be7+/–) 44...Kg7 (44...Be7 45.Nc7+/–) 45.Ne3 Kf7 (45...Kh6 46.Kg4+/–) 46.Ng4 (46.Bd2 Be7+/–) 46...Ne8 (46...Be7+=) 47.Ne3 (47.Bd2 Be7+/–) 47...Nd6 48.Kg4 (48.Ke2 Be7+/–) 48...Kg7 (48...Be7 49.Bd2+/–) 49.Bb2 (49.Bd2 Be7+/–) 49...Kf7 50.Kf3 Kg7 (50...Be7 51.Bc1+/–) 51.Ng4 (51.Bc1 Kf7+/–) 51...Kf7 (51...Be7 52.Ba3+/–) 52.h6 (52.Bc1 Be7+/–) 52...Nc8 (52...Be7 53.Bc1+=) 53.Ke3 (53.Ne3 Be7+/–) 53...Bc7 54.Nh2 Ne7 (better is 54...Bd6+=) 55.Nf1 (better is 55.Kd2!?+/–) 55...Ng8+= 56.Kf3 Nh6 57.Bc1 (57.Ne3 Ng8=) 57...Ng8 ½–½. De Visser,Arno – Tesselaar, Noordkop, 1996.

7.a4 d4 8.ed4 cd4 9.Nd4 Bc5 10.Nf3 (10.Nb3 Bd6+=) 10...0-0 (10...Ne4 A) 11.Bg7? Rg8 (11...Bf2?! 12.Ke2 Rg8 13.Bb2+=) 12.d4 Rg7–+; B) 11.d4=) 11.Be2+= Nbd7 (11...Bd6 12.0-0+=) 12.0-0 Ne4 (12...Be7 13.Re1+–) 13.d3+– Nd6 14.Nd4?? (14.a5 Rc8+–) 14...Nf5?? (better 14...Qf6 15.Ne6 Qe6-/+) 15.Nf5+– ef5 16.Bf3 Bf3 17.Qf3 (worse 17.gf3 Qh4 18.f4 Qf4=+) 17...Ne5?? (better 17...Qg5+–) 18.Be5 Re8 19.d4 (better 19.Bc3!? Qd7+–) 19...Bd4 20.Bd4 Qd4 21.Na3 Re4 (21...Qe4 22.Qe4 fe4 23.Rfd1+–) 22.Qf5 g6 (22...Rae8 23.h3 Qc3 24.Rfd1+–) 23.Qd5 Qd5 24.cd5 Rd8 25.Rfd1 f6 (25...Ra4 26.d6+–) 26.Nc2 Rd6 27.Ne3 (27.f3 Rc4 28.Ne3 Rc3+–) 27...f5 28.a5 (28.g3 Kf7+–) 28...f4 29.Ng4 ba5 30.f3 (worse 30.Ra5 h5 31.f3 Re7+–) 30...Rb4 (30...Re8 31.Kf1+– (worse 31.Ra5 h5+–)) 31.Ra5 h5 32.Ne5 Kg7 (32...g5 33.Nc6 Rb2 34.Ra7 Rb5 35.Rc7+–) 33.Nc6 (better 33.Ra7 Kf6 34.Nf7 Rb6+–) 33...Kf6 (33...Rb2+–) 34.Nb4 Rd5 35.Rd5 (35.Nd5 Kf7 36.Ra7 Ke6 37.Nf4 Kf6 38.Ra6 Ke7 39.Ng6 Kf7 40.Rd7 Ke8 41.Re7 Kd8 42.Ra8) 35...Ke6 (35...Ke7 36.Ra7 Ke6 37.b6 g5 38.b7 g4 39.b8Q gf3 40.Qd6) 36.Ra6 Ke7 37.Nc6 Ke8 (37...Ke6 38.Rd4 Kf7 39.Ne5 Ke7 40.Rd7 Ke8 41.Raa7 g5 42.Ra8) 38.Ne5 (38.Ra7 g5 39.Rd8) 38...Kf8 (38...h4 39.Re6 Kf8 40.Rd7 g5 41.Ng6 Kg8 42.Re8) 39.Rd7 (39.Rd7 Kg8 40.Raa7 Kf8 41.Rd8) 1–0. RichardSommer (2005) – virgopower (1985), lichess.org, 2020.

7.a4 Be7 8.Be2 Nbd7 9.0-0 Qc7 (9...0-0 10.d3=) 10.d4 (10.cd5 Bd5 11.Nc3 Bb7=) 10...0-0 (10...dc4 11.Bc4 cd4 12.Qd4 Bf3 13.gf3-/+) 11.dc5= Nc5 (11...Qc5? 12.Ba3 Qc7 13.Be7+–) 12.Nd4 (12.Be5 Bd6 13.Bf6 gf6=) 12...e5 13.Nf3 (13.Nf5 Rfd8=+) 13...Bd6 14.h3 d4 (better 14...dc4!? 15.Nbd2 Rfd8=+) 15.ed4= ed4 16.Nd4 (16.Bd4 Rad8 17.Qc2 Nfe4+=) 16...Rad8 17.Bf3? (17.a5 Bh2 18.Kh1 Be5–+) 17...Bh2 (17...Be5 18.Bb7 Qb7 19.Re1 Bd4 20.Bd4–+) 18.Kh1–+ Be5 19.Bb7 Qb7 (19...Nb7?! 20.Na3=+) 20.Re1 (20.Na3 Bd4 21.Bd4 Ne6–+) 20...Bd4 21.Bd4 Ne6 22.Re6 (22.Nd2 Rd4 23.Qc2 Rc8–+) 22...fe6 23.Nc3 (23.Qe2 Rd4 24.Qe6 Qf7 25.Qf7 Kf7–+) 23...e5 24.Qf3 (24.Nd5 Nd5 25.Be5 Ne3–+) 24...Qf3 25.gf3 ed4 (25...ed4 26.Nb1 Rfe8–+) 0–1. RichardSommer (2105) – mohethu (2080), lichess.org, 2020.

7.Qc2 Bd6 8.d3 0-0 9.Nbd2 Nbd7 10.Be2 Qc7 11.h3 Rfe8 12.Nh4 a6 13.a4 dc4 14.dc4 e5 15.Nf5 g6 16.Nh6 Kg7 17.Ng4 Bg2 18.Rh2 Bb7 19.h4 e4 20.Rg2 Be5 21.Ne5 Ne5 22.h5 Rad8 0–1. ArgosZgZ (1690) – swooned, lichess.org, 2020.

7.Nc3 Bd6 8.cd5 Nd5 (8...ed5!? 9.Bd3 0-0=) 9.Nd5+= Bd5 10.Bg7 Rg8 11.Bb2 Nd7 12.Qc2 Qe7 (12...Nf6 13.Rc1+=) 13.e4 (13.Qh7!? 0-0-0 14.Qc2+–) 13...Bb7+/– 14.e5 Bc7 15.0-0-0 (15.Rc1 Bf3 16.gf3 f6+/–) 15...0-0-0 16.d4 (16.Re1!? Bf3 17.gf3+=) 16...cd4= 17.Nd4 Ne5 (17...Bg2? 18.Bg2 Rg2 19.Nc6+–) 18.f3 Kb8 (18...h5 19.Kb1=) 19.Kb1 (19.Qh7!? Rc8 20.Kb1+=) 19...Rd7 (19...h6!?=) 20.Qh7+= (20.Qh7 Rgd8 21.Qc2+=) 1–0. guest312 – guest336, chessclub.com, 2018.

7.Nc3 Be7 8.d3 0-0 9.Be2 Qc7 10.0-0 Rd8 11.cd5 ed5 12.Rc1 Nbd7 13.Rc2 Nf8 14.Qc1 Rac8 15.Nd1 Ng6 16.g3 (16.a4 Re8=) 16...Qd7+= 17.d4 c4 18.Nc3 Qe6 19.Ng5 (19.Ba3 Re8+=) 19...Qf5-/+ 20.Nf3 h5 (20...a6 21.ba6 Ba6 22.a4-/+) 21.h4 Ng4 22.Qe1?? (better is 22.Nh2 Rc7 23.Ng4 hg4 24.Qd1+=) 22…Qc2–+ (22...Qc2 23.Qa1 Qf5–+) 0–1. Schmidtke,Wilfried – Daug,Joern Henning, Mecklenburg VP LL2, 2007.

7.d3 dc4 8.Na3 cd3 9.Bd3 Nbd7 (9...a6 10.ba6 Na6 11.Bb5 Ke7 12.Qe2+=) 10.0-0 Qc7 (10...a6 11.Qe2+=) 11.Qc2 (11.Nc4 Be7+=) 11...Bf3 12.gf3 Bd6 13.f4 Nd5 (13...e5 14.Nc4 ef4 15.Rad1 fe3 16.fe3-/+) 14.Be4+= (14.Bg7?? Rg8–+) 14...Nb4 (14...Rd8 15.Bd5 (worse is 15.Bg7 Rg8–+) 15...ed5 16.Rad1+= (16.Bg7 Rg8–+)) 15.Qe2 (15.Qc3 0-0-0+=) 15...Rd8 16.Qh5 (16.Nc2 Nc2 17.Qc2 e5 18.fe5 Be5 19.Be5 Ne5+=) 16...g6 (16...Be7!?-/+) 17.Qh6= Rg8 (17...Rf8!?=) 18.Qh7+= Ke7 19.Qh4 (19.Nc4 Nd5 20.Qh6+=) 19...f6?? (better is 19...g5!? 20.fg5 Be5+=) 20.Rad1 (20.Qh7 Kf8 21.Nc4+– (21.Bg6?! Ne5 22.Qh6 Qg7 23.Qg7 Rg7 24.fe5 Rg6 25.Kh1 Be5 26.Be5 fe5=)) 20...Rh8= 21.Qg3 (21.Qg4 Nf8+=) 21...g5 22.Bc6? (better is 22.h4 Rh4 23.Bg2+=) 22...gf4?? (better is 22...Rdg8 23.fg5 Nc6 24.bc6 Bg3 25.Rd7 Ke8 26.fg3 Qc6–+) 23.Qg7+– (23.Qg7 Ke8 24.Qh8 Kf7 25.Qh7 Kf8 26.Nc4+–) 1–0. GuestBTJT – GuestLVLZ, freechess.org, 2016.

7.d4 a6 8.ba6 Ba6 9.dc5 bc5 10.Nbd2=.

7.d4 dc4 8.Bc4 Nbd7 9.0-0 Be7 10.Nbd2 0-0 11.Re1 Rc8 12.Rc1 cd4 13.Nd4 Nc5 14.N2f3 Bd6 15.Ng5 Bd5 16.Bd5 Nd5 17.Qg4 Nf6 18.Qe2 h6 19.Ngf3 Qd7 20.Nc6 Nce4 (better is 20...a6!?+=) 21.Red1+/– Nd5 22.Nfe5 Be5 23.Ne5 Qe7 24.Nc6 Qb7 25.f3 Nc5 26.e4 Ne7 27.Ne5 Rcd8 28.Rc4 (28.Bd4!?+/–) 28…f6 ½–½. Streit,Bodo – Mitscherling,Reinhard (1995), Mecklenburg VP LL2, 2007.

7.d4 cd4 8.Bd4 Bb4 9.Nbd2 0-0 10.a3 Bd6 11.Bd3 Nbd7 (11...a6 12.Qb1=) 12.cd5 Nd5 (12...e5 13.Nc4 Qe7 A) worse is 14.Nd6 Qd6 (14...ed4? 15.Nb7 Nb8 16.e4+–) 15.Ne5 Ne5-/+; B) 14.Bb2-/+) 13.0-0 Nc5 14.Bc2 (14.Nc4 Nd3 15.Nd6 Qd6 16.Qd3 Nc7=) 14...Nf6 (14...a6 15.Nc4=) 15.Nc4+= Be7 16.Qe2 Rc8 (16...a6 17.Rfd1 Bd5 18.Rab1+=) 17.Rfd1+= Bf3 (17...Bd5 18.Rac1+=) 18.Qf3+/– Ncd7 (18...Qd5 19.Qd5 Nd5 20.Rac1+=) 19.Bb3 (19.Bd3 Bc5+/–) 19...Qc7 20.Rac1 Qb8 (20...Rfd8 21.Rc3 Nc5 22.Bc2+=) 21.a4 (21.Rc2 e5 22.Bc3 Rc5+/–) 21...Nc5 (21...Rfd8 22.Bb2+=) 22.Bc2 Qa8 (22...Rfd8 23.Be5 Qb7 24.Qb7 Nb7 25.Rd8 Rd8 26.Kf1+=) 23.Qh3 (23.Qa8 Ra8 24.a5 Nd5+/–) 23...h6 (23...Nce4 24.Ne5+/–) 24.Ne5 Qb7 25.Nc6 Nce4 26.Qh4 Ng5 (26...Nc5 27.Qg3+/–) 27.f4+– Ngh7 28.Be5 (28.Qg3 Ba3 29.Bh7 Kh7+/–) 28...Bc5 (28...Ba3 29.Ra1 Bc5 30.Qg3+/–) 29.Qg3 Rc6 (29...a6 30.Be4+/–) 30.bc6+– Qc6 31.a5 Nh5 32.Bh7 Kh7 33.Qh3 Nf6 34.Bd4 (34.Bf6 gf6 35.ab6 Qb6+/–) 34...Qb5 35.Bf6 gf6 36.a6 (36.f5 Qb3 37.Re1 Rc8+/–) 36...Qb3 (36...Qa6 37.Qf3+=) 37.Re1+/– Rg8 38.Rcd1 Qa4 39.Kh1 (39.f5 Qg4 40.Qg4 Rg4+–) 39...Qa6+= 40.Rd7 Rg7 41.f5 e5 42.Qf3 Qa4 43.Qd5 (better is 43.Red1+=) 43...Kg8?? (better is 43...Qa5 44.Qd1 a6=) 44.Rd8+– Bf8 45.Qd6 (45.Qd6 Qa3 46.Qa3 Kh7 47.Qf8 Rg2 48.Qh8) 1–0. Zylla,Johannes – Pal,Antal, corr ICCF TT–4–90 SF, 1995.

7.d4 Bd6 8.Nbd2 (8.dc5 bc5 9.cd5 ed5=) 8...Nbd7 (8...0-0 9.Bd3=) 9.Qc2 (9.Be2 cd4 10.Nd4 0-0=) 9...cd4+= 10.Bd4 (10.Nd4 Rc8+=) 10...Qc7 (10...e5 11.Bb2+=) 11.h3 (11.Rc1 e5 12.Bb2 Rc8=) 11...0-0 12.Bb2 Bb4 (12...a6 13.ba6 Ba6 14.Rc1+=) 13.a3= Ba5 14.Rc1 (14.Bd3 dc4 15.Qc4 Qc4 16.Bc4 Rac8-/+) 14...Rac8 15.Bc3 (15.Be2 dc4 16.Qc4 Bd2 17.Kd2 Qd8=) 15...Bc3 16.Qc3 Ne4 17.Ne4 de4 18.Nd2 Ne5 (18...Nc5 19.Nb3+=) 19.Be2 Nd3 20.Bd3 ed3 21.0-0 Rfd8 22.Rfd1 Qe7 23.a4 (23.e4 Qg5+=) 23...Qg5 The mate threat is Qxg2 24.e4 f5 25.Qe5 Qg6 26.f3 fe4 (26...Rc5 27.ef5 Qg2 28.Kg2 Re5 29.fe6 Re6 30.a5+=) 27.Ne4 Be4 28.fe4 Rc5 29.Qf4 Rg5 30.Rd2 (30.g4 h5+=) 30...e5 31.Qf3 Rg3 32.Qf5 Qh6 (better is 32...Qf5!? 33.ef5 Rg5+=) 33.Rf1+/– Threatening mate: Qf7 33...Qf6 34.Qf6 gf6 35.Rf6 (35.Kf2 Rg6+=) 35...Re3 36.Rf3 Rf3 (36...Re4 37.Rfd3 Rd3 38.Rd3 Rc4 39.Rd8 Kf7 40.Rd7 Ke6 41.Ra7+/– (41.Rh7?! Ra4 42.Kf2 Ra5=)) 37.gf3 Kf7 38.Kf2 Rd4 39.Ke3 Rc4 40.Rd3 Ke6 41.Ra3 Rc2 42.f4 (42.h4!?+/–) 42...Rh2+= 43.f5 Kf6 44.Rc3 Rh3 45.Kd2 Rh2 46.Kd3 Rh3 (46...Ra2 47.Rc6 Kg5 48.Re6=) 47.Kc4 Rh1 48.Kd3 ½–½. Skerlik,S – Landolfi,F, corr ICCF EU/M41 (year?).

7.cd5 Qd5 8.Be2 Be7 9.Qc2 0-0 10.0-0 Nbd7 11.Na3 a6 12.ba6 Ba6 13.Nc4 b5 14.Nce5 b4 15.Bc4 Bc4 16.Nc4 Ra6 17.a3 Nb6 18.Nfe5 Nc4 19.Nc4 Rb8 20.ab4 Ra1 21.Ra1 cb4 22.Ra7 b3 23.Qc1 Rc8 (23...Bb4!? 24.Ne5 Bd2+=) 24.Re7= Rc4 (worse is 24...Qc4 25.Qc4 Rc4 26.Rb7+=) 25.Qa1 h6 26.Bc3 Ne4 Attacks the backward pawn on d2 27.h3 (better is 27.Re8 Kh7 28.Bg7=) 27...Rc8-/+ 28.Ra7 Nc3 29.dc3 Rb8 30.c4 Qc4 31.Qb2 Qc2 32.Qe5 Rb6 Black intends b2 33.Qh5 Qb1 34.Kh2 Qf5 35.Qf5 ef5 36.Ra1 b2 (36...Kf8 37.Kg3–+) 37.Rb1 f6 (37...Kh7 38.Kg3–+) 38.Kg3-/+ Kf7 (38...g5 39.Kf3 Kf7 40.Ke2-/+) 39.Kf3 Ke6 40.Ke2 Kd5 41.Kd3 Rb3 42.Kc2 Kc4 43.f3?? (better is 43.h4–+) 43...Rc3 (43...Rc3 44.Kd2 Kb3–+) 0–1. BH (2175) – Kuntermann,Herbert (2295), BdF, 2008.

7.Be2 a5 8.ba6 Na6 (8...Ba6 9.cd5 Nd5 10.Nc3=) 9.cd5 Nd5 (9...Bd5 10.Bb5 Nd7 11.Ne5=) 10.Bb5 Ke7 11.Ne5 f6 12.Nc6 Bc6 13.Bc6 Rb8 (13...Ra7 14.0-0=) 14.0-0 (14.d4 Nab4 15.Bb5 Nc7=) 14...Nab4 15.Bb5 Kf7 (15...Nc7 16.Be2+=) 16.d4 Bd6 (better is 16...Rc8!? 17.a3 Nc7+=) 17.a3+– Nc7 18.ab4 Nb5 19.bc5 bc5 20.dc5 Bc5? (better is 20...Be7 21.Qf3 Qc7+/–) 21.Qh5+– g6 22.Qc5 Re8 (22...Qe7 23.Qc6+–) 23.Ra6 (23.Qc2 Kg7+–) 23...Qc8 (23...Qe7 24.Qc4+–) 24.Rc6 Qb7 (24...Qd8 25.Nc3 Nc3 26.Qc3+–) 25.Nc3 Nc3 (25...Re7 26.Ne4 Qa7+–) 26.Rc7 (26.Qc3?! Qb2 27.Rc7 Kg8+=) 26...Re7 (26...Kg8 27.Rb7 Ne2 28.Kh1 Rb7 29.Bf6 Rf7+–) 27.Qe7 (27.Qc3?! Qb2 28.Re7 Ke7 29.Qc7 Kf8 30.Qh7 g5+–) 27...Kg8 28.Qg7 1–0. DEFFM – GuestJJRN, freechess.org, 2018.

7.Be2 Bb7 8.0-0 Nbd7 9.Nc3 dc4= 10.Bc4 Be7 (10...Bf3 11.Qf3 Ne5 12.Qe2=) 11.Rb1 (11.d4 a6=) 11...0-0 12.a3 (12.d4 Bf3 13.Qf3 cd4 14.ed4 Qc7=) 12...Nd5 (12...Bf3 13.Qf3 Ne5 14.Qf4 Nc4 15.Qc4 Qd2 16.Qa4=+) 13.Re1 N7f6 14.e4 (better 14.d3!?=) 14...Nc3-/+ 15.Bc3 Ne4 16.Qc2 (16.Qe2 Nd6-/+) 16...Nc3 17.dc3 (17.Qc3 Bf6 18.Ne5 Qd6–+) 17...Bf3–+ 18.gf3 Bh4 (18...Bd6 19.Qe4–+) 19.Bd3 (19.f4 Qf6-/+) 19...Qg5–+ 20.Kh1 g6 21.Re4 (21.Be4 Rad8 22.Rbd1 c4–+) 21...Qf6 22.Rg1 (22.f4–+) 22...Qf3 23.Rg2 Bf6 (23...Bf2!? 24.Be2 Qf6 25.Qc1–+) 24.Re3 Qd5 (24...Qh5 25.Be2 Qh4 26.Bf3–+) 25.Kg1? (better 25.Be4 Qc4 26.Ba8 Ra8 27.a4-/+) 25...Rad8–+ 26.Rgg3 (26.Rg4 Rd7–+) 26...Rd7 (better 26...c4 27.Bf1 Qb5–+) 27.Rg6?? (27.Be4 Qd1 28.Kg2 Qc2 29.Bc2–+) 27...hg6 28.Bg6 (28.c4 Qg5 29.Rg3 Qf4–+) 28...Qd1 29.Kg2 Qc2 (better 29...fg6 30.Qe4–+) 30.Bc2 Rd2 31.Rg3 Bg7 (31...Bg7 32.Be4 Rfd8–+) 0–1. aravind555 – wahbikoudsi (1820), lichess.org, 2017.

7.Be2 Qc7 8.0-0 Bd6 9.d4 Nbd7 10.Nbd2 (10.cd5 Bd5 11.Nc3 Bb7=) 10...cd4 11.ed4 dc4 12.Nc4 Nd5 13.Nd6 Qd6 14.Qa4 N7f6 15.Ba3 Qf4 16.Qb3 Ng4 17.Rac1 f6 (17...Rd8 18.Rfe1+=) 18.h3 (18.Bd3 Kd7+/–) 18...Nh6 19.Bd3 Ne7?? (better is 19...Nf5+/–) 20.Qe6+– Nhf5 21.Bf5 Qf5 (21...Qc7 22.Rc7 Kf8 23.Qe7 Kg8 24.Qg7) 1–0. DEFFM – papal, freechess.org, 2018.

7.Be2 d4 8.ed4 cd4 9.Nd4 (9.Bd4!? Bd6 10.Nc3+/–) 9...Bg2= 10.Rg1 Bb7 11.Bf3 Qc7 (11...Bf3 12.Qf3 Nbd7 13.Nc6=) 12.d3 Bb4 (worse is 12...Qh2 13.Bb7 Qg1 14.Ke2 Qd1 15.Kd1+–) 13.Kf1 0-0?? (better is 13...Bf8+=) 14.Bb7+– Qb7 15.Nc6 Be7 16.Qf3 (worse is 16.Ne7 Qe7 17.Qf3 Nbd7+–) 16...Kh8? (16...Nc6 17.bc6 (worse is 17.Qc6 Qc6 18.bc6 Rfd8-/+) 17...Qc7 18.Bf6 Bf6 19.Qf6+–) 17.Qg2 Rg8 18.Ne7 (18.Ne7 Qg2 19.Rg2+–) 1–0. DEFFM – GuestBNXP, freechess.org, 2018.

7.Be2 g6 8.d4 Bg7 9.dc5 bc5 10.a4 0-0 11.0-0 Nbd7 12.Nbd2 (12.cd5 ed5 13.Qd3 a6=) 12...Qa5 (12...Qe7 13.Qc2=) 13.Nb3 Qc7= 14.Rc1 (14.Qc2 Rfd8=) 14...Rad8 (14...dc4 15.Nbd2= (15.Bc4?? Ng4 16.Nbd2 Bb2–+; 15.Rc4?! Bd5=)) 15.Qc2+= Nb6 (15...dc4 16.Nbd2+= (worse is 16.Bc4 Ng4 17.Nbd2 Nb6+=)) 16.a5 (16.Be5!? Qe7 17.cd5 Rd5 18.e4 (18.Nc5?! Rc8 19.Bd4 Nfd7=) 18...Re5 19.Ne5 Ne4 20.Nc6 Bc6 21.bc6+=) 16...Nc4= 17.Bc4 (17.Bf6 Bf6 18.a6 Ba8=) 17...dc4 18.Qc4 Bd5 (18...Bf3!? 19.gf3 Qb7=) 19.Qc5+/– Qc5 (19...Qb7 20.a6 Qb8 21.Nbd2+/–) 20.Nc5 (worse is 20.Rc5 Bb3 21.Nd4 Bd5–+) 20...Bf3 21.gf3 Rc8 (21...Nd7!? 22.Bg7 Kg7+–) 22.Bf6 (22.Bf6 Bf6 23.b6 ab6 24.ab6+–) 1–0. Kleinke,Uwe – Scharmer, corr DDR–I–743, 1979.

8.Na3 Bd6 9.Be2 Nbd7 10.0-0 Ne4 11.d3 Ng5 12.g3 d4 13.e4 e5 14.Ng5 Qg5 15.Bc1 Qe7 16.Nc2 g5 17.Bg4 0-0-0 18.Ne1 h5 19.Bh5 Nf6 20.Bg5 Rdg8 21.Bf6 Qf6 22.Bg4 Kb8 23.Ng2 Qg7 24.Bf5 Be7 25.Ra2 Qh6 26.h3 Bc8 27.Qf3 Qf6 28.Kh2 Rg5 29.Nh4 Bb7 30.Bg4 Qf3 31.Bf3 Bc8 32.Bg2 f5 33.Nf3 fe4 34.Ng5 Bg5 35.Be4 Bh3 36.Rh1 Bf5 37.Kg1 Rh1 38.Kh1 Be4 39.de4 Kc7 40.Ra1 Kd7 41.Kg2 Bd8 42.f4 ef4 43.gf4 Ke6 44.Kf3 Kf6 45.Rg1 Kf7 46.e5 Bc7 47.Ke4 Bd8 48.f5 Bc7 49.Rg6 Bd8 50.e6 Kf8 51.f6 Bc7 52.Rg7 Bd8 53.e7 1–0. hal1958 – MorphyzGhost, playchess.de, 2002.

8.Na3 Nbd7 9.cd5 ed5 10.Bd3 Bd6=.

8.Na3 Nbd7 9.Be2 Qc7 10.0-0 Bd6 11.d4 (11.cd5 Bd5 12.Nc4 Rd8=) 11...Ng4 Now all is on h2 (11...cd4 12.Qd4 Nc5 13.cd5=) 12.g3 (12.h3 Ngf6+=) 12...0-0 13.Nh4 (13.Rc1 Rad8=) 13...Ngf6+= 14.Rc1 Rfd8 (14...Rac8 15.cd5 Bd5 16.Nc4=) 15.Qb3 (15.cd5 Bd5 16.Nc4 cd4 17.Bd4 Bc5+=) 15...Rac8 (15...cd4 16.ed4 Rac8 17.f4-/+) 16.cd5 Bd5 17.Bc4 Ba8 18.Be2 Ne4 19.Nc4 Ng5 (19...Bd5 20.Qd1+=) 20.Ng2 (20.Rfd1 Bd5+=) 20...Nf3 (20...cd4 21.Bd4 e5 22.Bb2-/+) 21.Kh1 Be7 22.Qd1 Qb7 23.Bf3 Qf3 24.Qf3 Bf3 25.Rg1 (25.Rfe1 Rc7-/+) 25...Rc7 26.Nd2 Bb7 (26...Ne5 27.Rc2 Rcd7 28.Bc3 cd4 29.Bd4-/+) 27.Rc2 (27.Rgd1 Rdc8+=) 27...Rdc8 (27...Rcc8 28.Rgc1+=) 28.Rgc1+= Bf6 (28...f5 29.f3+=) 29.e4= Bd8 (29...Kf8 30.f3=) 30.f3 f5 (30...cd4!? 31.Rc7 Rc7 32.Rc7 Bc7 33.Bd4 f5=) 31.Nf4+= Kf7 32.Nc4 Be7 (32...fe4 33.Nd6 Ke7 34.Nb7 Rb7 35.fe4+=) 33.Ne6 (33.d5 ed5 34.Nd5 Bd5 35.ed5 Rb7+/–) 33...Ke6 34.d5 Bd5? (better is 34...Kf7 35.d6 fe4=) 35.ed5+– Kd5 36.Rd2?? (36.Re1 Bf6 37.Bf6 gf6 38.Rd1 Ke6 39.Re2 Ne5 40.f4+–) 36...Ke6+/– 37.Rd7! Rd7 Decoy to d7 (37...Kd7 Decoy theme: d7 38.Nb6 Theme: Double Attack) 38.Nb6 The passed pawn on b5 quickly leads to threats. A double attack 38...Rdc7 39.Nc8 Rc8 40.Bg7 Kd5 (40...c4 41.Kg2+/–) 41.f4 (41.Rd1 Ke6+–) 41...c4+/– 42.Be5 Bd8 (42...Bc5 43.Kg2 Be3 44.Re1+–) 43.Kg2 (43.Rd1 Kc5 44.Bc3 Bb6+–) 43...Ke4 (43...Bc7 44.Rd1 Kc5 45.Bc3+–) 44.Rd1 (44.Rd1 h5 45.Rd6+–) 1–0. Gostisa,Leon F – Nedeljkovic,B, corr JUG–chT, 1979.

8.Na3 Nbd7 9.Be2 Be7 10.0-0 0-0 11.Qc2 h6 12.Rad1 Qc7 13.h3 Rad8 14.d3 Rfe8 15.Rd2 Bf8 (15...e5 16.cd5 Bd5 17.Nc4=) 16.Rc1 Qb8 17.Rcd1 Bd6 18.Qb3 Be7 (18...e5 19.cd5 Bd5 20.Qc2+=) 19.Nc2 Bd6 20.Nce1 (20.d4 Ne4 21.Rd3 cd4 22.Rd4 Ndc5+=) 20...e5+= 21.Nh4 d4 22.e4 Bc8 23.Nf5 Nf8 24.g4 Ng6 25.Ng2 Bf5 26.gf5 Nf4 27.Nf4 ef4 28.Bf3 g5 (28...Be5 29.Re2+=) 29.fg6 fg6 30.Kh2 Be5 31.Rg1 Kh7 32.Qd1 Rf8 33.Rg2 Qc8 34.Qe2 (34.Qg1 Rg8=) 34...Qe6+= 35.Rd1 g5 36.Rh1 g4 (better is 36...Rde8!?=) 37.hg4+/– Ng4 38.Kg1 (38.Bg4 f3 A double attack) 38...Nf6= 39.Rgh2 Rg8 40.Kf1 Rg6 41.Bc1 Kg7 42.Rh4 The isolani on f4 becomes a target 42...Qd6 43.Bg4 Ng4 44.Rg4 Rf8 45.Rhg1 Rg4 46.Qg4 Kh7 47.Rg2 (47.Bf4 Qf6 48.Bg3 Bg3 49.Qg3 Re8+/–) 47...Qf6 48.Qd7 Rf7 49.Qe8 Threatening mate... how? 49...Rg7 50.Rg7 Kg7 51.Qd7 Kg6 (51...Qf7 52.Qg4 Qg6 53.Qd7 Kf8 54.Qd8 Kf7 55.Qd5 Qe6 56.Ke2=) 52.Qg4 Qg5 53.Qe6 Qf6 54.Qg8 Kh5 (54...Qg7 55.Qc8 Qc7 56.Qg4 Kh7 57.Ke1+=) 55.Qg2 (55.Ke2 Qg6 56.Qd5 f3 57.Kd1 Qg1 58.Kc2 Qf2 59.Kb1 Qg3 60.Qf7 Kh4 61.Qe7 Kh3 62.Qe6 Kg2 63.Qh6 f2–+) 55...Qg5= 56.Qh3 ½–½. Imhof,A – Zimmermann,Georg, Lienz op, 1988.

8.ba6 Ba6!? 9.Na3 Be7=.

8.ba6 Na6 9.cd5+= ed5 10.Nc3 (10.Bb5 Ke7+=) 10...Be7 (10...Nc7 11.Be2=) 11.Bb5+= Kf8 12.0-0 Nc7 13.Be2 Ne6 14.Qb3 h5 15.Nb5 h4 16.h3 Rh5 17.d3 Kg8 18.Ne5 (18.Rfc1 Qe8+=) 18...Rg5 19.Nf3 Rg6 (19...Rh5 20.Rfb1+=) 20.Kh1 (20.Nh4 Rh6 21.Nf5 Rg6+/-) 20...Nc7 (better 20...Rh6!?+=) 21.Nh4+- Rg5 22.Nf3 (22.f4 c4 23.dc4 Rg3+-) 22...Rg6 (22...Rh5 23.Kg1+/-) 23.Kh2 (23.Nc7!? Qc7 24.Be5 Qd8+-) 23...Rh6+/- 24.Bc1 (better 24.Ne5!?+/-) 24...Nb5= 25.Qb5 Ba6 (better 25...Bc6! 26.Qb2 Ba4=) 26.Qb2 Bd6 27.Kg1 Bc7 28.e4 Rg6? (better 28...Rh5!?+/-) 29.Nh4+- de4 30.Ng6 fg6 31.de4 Qd6 32.g3 Ne4? (32...Be2 33.Qe2 Qe6 34.Ra3+-) 33.Bf4 (33.Ba6!? Ra6 34.Qe2 Ng3 35.fg3 Qg3 36.Qg2 Qg2 37.Kg2 b5+-) 33...Qc6 34.Bc7 Qc7 35.Bf3 Bb7 36.Rae1 (better 36.Qc2 Ng5 37.Qc4 Kf8 38.Bb7 Qb7 39.Qf4 Nf7 40.Rfe1+-) 36...Ng3?? (better 36...Ng5 37.Bb7 Qb7 38.Qb3 Qf7 39.Qf7 Kf7+-) 37.fg3 (better 37.Bb7 Ne2 38.Qe2 Qb7 39.Qe6 Qf7 40.Qb6 Qf5+-) 37...Qg3 38.Qg2 Qg2 39.Kg2 Bf3 40.Rf3 Ra4 41.Rb1 Ra2 42.Kg3 c4 (42...Ra6 43.Rfb3 Kh7 44.Rb6+-) 43.Rb6 c3 (43...Ra4 44.Rc3+-) 44.Rc6 Kh7 45.Rfc3 Rb2 46.Rf3 Re2 47.Re3 (better 47.h4+-) 47...Re3= 48.Kf2 (48.Kf2 Rh3 49.Rc5-+). ClayPigeons (2250) - pmlmail (2455), Rated Bullet game, lichess.org, 2020.

8.d4 cd4 9.Bd4 Nbd7 10.Nbd2 Bc5 (10...Rc8 11.cd5 Bd5 12.Bd3=) 11.Be2 (11.Bd3 Bd4 12.ed4 Nh5=) 11...Bd4 12.ed4 (12.Nd4 0-0=) 12...0-0 13.0-0 Qe7 14.Rc1 Rac8 15.Re1 dc4 (15...Rfd8 16.c5 bc5 17.Nb3=) 16.Nc4 Nd5 (16...Rfd8 17.Bd3=) 17.Qb3 (17.Bd3 Rfd8=) 17...N7f6 (17...Nf4 18.Bf1+=) 18.Nfe5 (18.Nce5 Qd6=) 18...Rc7 19.Ne3 (19.Qg3 Rfc8=) 19...Rfc8 20.Qb2 (20.Rc7 Rc7 21.Bf3 Ne3 22.Qe3 Bf3 23.Qf3 Nd5=) 20...Qb4 (20...Rc1 21.Rc1 Rc1 22.Qc1+=) 21.Qb4= Nb4 (21...ab4 22.Rc7 Rc7 23.Bc4+=) 22.Rc4 Nbd5 (22...Bd5 23.Rc7 Rc7 24.N3c4 Bc4 25.Bc4=) 23.Rec1 Rc4 24.Rc4 Nc3 (24...Rc4 25.N3c4 (worse is 25.Bc4 Nc3-/+) 25...Nc3 26.Kf1 Na4 27.Nd6+=) 25.Bd3 (25.Nc6 Ne2 26.Kf1 Ng3 27.hg3 Bc6 28.bc6 Kf8=) 25...Kf8 (25...Rc4 26.N3c4 Na4 27.Nd6+=) 26.Kf1 (26.Nc6 Ncd5+=) 26...Ke7 (26...Rc4 27.N3c4 Na4 28.Nd6=) 27.f3 (27.Bc2!?+=) 27...Rc4+= 28.N5c4 (28.N3c4 Na4 29.Nf7 Kf7 30.Nd6 Ke7 31.Nb7 Kd7–+) 28...Na4 29.Nd1 Nd5 30.Ke1 (30.Bh7 g6 31.Bg8 Nac3 32.Nc3 Nc3–+) 30...Nb4 31.Kd2 Bd5 32.Nc3? (32.Nde3 f5 33.Ne5 Nd3 34.Kd3+=) 32...Nd3–+ 33.Nd5 (33.Kd3 Nc3 34.Kc3 Bc4 35.Kc4 g5–+) 33...ed5 34.Kd3 dc4 35.Kc4 Nb2 (35...Nb2 36.Kc3 Nd1 37.Kd2 Kd6 38.Kd1 Kd5–+) 0–1. Paulsen,Helmut (1790) – Kreutzkamp,Hans_Rudolf (2175), Hamburger Senioren EM, 2015.

8.cd5 ed5 9.Be2 Bd6=.

8.Be2 Nbd7 9.0-0 Qc7 10.Na3 Be7 11.Rc1 0-0-0 (11...0-0 12.d3=) 12.d4+= Kb8 13.Qc2 h5 14.cd5 ed5 (14...Bd5!? 15.Nc4 Be4+/–) 15.dc5+/– Bc5 16.Qf5 Qd6 17.Nc2 Rde8 18.Bd3 Bc8 19.Qf4?? (better is 19.Qg5+–) 19...Qf4+= 20.ef4 Bd6 21.g3 (21.Ncd4!? Nc5 22.Bc2 Bf4 23.Rcd1+=) 21...Nc5-/+ 22.Rfd1 Bg4 (22...Nd3?! 23.Rd3 Bf5 24.Rd2+=) 23.Kg2 Na4 (23...Nd3?! 24.Rd3 Bf5 25.Re3=) 24.Ba1 (24.Bf6 gf6 25.Ne3 d4 26.Ng4 hg4 27.Nd4 Nb2+=) 24...Nc5 (24...h4 25.h3 Bf3 26.Kf3+=) 25.Ne3 Ncd7 26.h3 Bf3 27.Kf3 Bc5 28.Bf5 Exerts pressure on the isolated pawn 28...Be3 29.fe3 Re7 30.Bd4 (30.Bd7!? Nd7 31.Bg7+/–) 30...Rhe8= 31.Rc6 g6 32.Bb1 Re6 33.Rdc1 (33.f5 gf5 34.Bf5 Ne4 35.Be6 fe6+/–) 33...Ne4 34.Ba2 Rc6 35.bc6 Ndc5 (better is 35...Ndf6!?+=) 36.Bd5+/– Re7 (better is 36...f6!?+/–) 37.Be4+– Ne4 38.Bb6 Nd2 39.Ke2 Nb3? (39...Ne4+–) 40.Rd1 Re8 (40...Rc7 41.Bc7 Kc7 42.Rd7 Kc6 43.Rf7 a4+–) 41.Rd8 (41.Rd8 Rd8 42.c7 (42.Bd8 Kc8 43.c7 a4+=) 42...Kb7 43.cd8Q+– (43.cd8N?! Kb6 44.Nf7 a4+=)) 1–0. Shorokhov,Mikhail – Zhukov,Viktor (2240), Anapa op, 2008.

8.Be2 Nbd7 9.0-0 Bd6 10.d4 Qc7 11.Nbd2 cd4 12.ed4 Rc8 13.Rc1 Qb8 14.Re1 (14.Qb3 Ne4 15.g3 Nd2 16.Nd2 0-0=) 14...0-0 15.Qb3 Ne4 16.Nf1 Bb4 (16...dc4 17.Bc4 Bf4 18.Ne3+=) 17.Red1 dc4 18.Bc4 Nef6 (18...Rfd8 19.Ne3=) 19.Ne1 (19.Ne5 Rfe8=) 19...Bd5 (19...Bd6 20.Ba3+=) 20.Ne3= Bc4 21.Nc4 Nd5 22.Nd3 Rfe8 (22...N7f6 23.Nb4 ab4 24.Ne5=) 23.Nb4 ab4 24.Qb4?? (better is 24.Ne5 Qd6 25.Re1=) 24...Nb4–+ (24...Nb4 25.Ba3 Na2–+) 0–1. Bernardt,Rainer Georg – Janszen,H, corr FRG–ch M, 1987.

8.Be2 Nbd7 9.0-0 g6 10.cd5 ed5 11.d3 (11.d4 Bg7=) 11...Bg7 12.Nbd2 0-0 13.Qb3 Qe7 14.Rfe1 Rac8 15.Rac1 Ng4 16.Bg7 Kg7 17.Qc3 f6 (17...Ngf6 18.e4=) 18.h3 Nge5 Black prepares the advance c4 19.Qb2 Rfe8 20.Ne5 Ne5 21.d4 Nd7 22.Bf3 c4 (better 22...cd4!? 23.Qd4 Qb4=) 23.Nc4!+– Rc4 (23...Rc4 24.Rc4 Combination; 23...dc4 24.Bb7 Pinning (24.Bb7 Deflection)) 24.Rc4+– dc4 25.Bb7 Ne5? (better 25...Qb4 26.Qa1 Qb3+–) 26.de5 Qb7 27.ef6 Kf7 (27...Kf8 28.Rd1 Qc7 29.Qc3+–) 28.Rd1 Qc7 (28...Qc8 29.Qc3 Qe6 30.Rd4+–) 29.Qc3 Re6 (29...Re4 30.f3 Re5 31.Rd4+–) 30.Rd4 Rf6 (30...h6+–) 31.Rc4 Qd6 32.Rc7 Kg8 33.Qc4 Kh8 (33...Qe6 34.Qh4 Rf7 35.Rf7 Kf7 36.Qh7 Kf8+–) 34.Rc8 Rf8 35.Rf8 Qf8 36.Qd4 Kg8 37.Qb6 Qb4 (37...Qc8 38.Qa7 Qc3+–) 38.Qd8 (38.Qd8 Kf7 39.Qc7 Ke6 40.b6 Qa4 41.b7 Qd1 42.Kh2 Qd6 43.Qd6 Kd6 44.b8Q Kc6 45.Qe8 Kb6 46.Qe6 Kc5 47.Qe7 Kc4 48.Qc7 Kb5 49.Qh7+–) 1–0. Massudy (2570) – mitroglou1 (2170), lichess.org, 2020.

8.Be2 Be7 9.Qc2 (9.0-0 0-0=) 9...Nbd7 (9...0-0 10.d3=) 10.d3 Qc7 11.Nbd2 0-0 12.h3 (12.0-0 Rad8=) 12...Ne8 (12...Rad8 13.0-0=) 13.0-0-0 (13.cd5!? Bd5 14.Rc1=) 13...Bf6 (13...Rd8 14.Kb1+=) 14.Rhg1 (14.Rhe1 Rd8+=) 14...Bb2 (14...Rd8 15.Bf6 Nef6 16.g4+=) 15.Qb2 (15.Kb2 Rd8+=) 15...f6 (15...Rd8 16.Qc2+=) 16.g4 (16.Qc2 Nd6+=) 16...e5 17.Nh4 e4 (17...Nd6 18.Nf5+=) 18.f4 (18.cd5!? ed3 19.Bd3 Bd5 20.Nc4+=) 18...ef3+= 19.Ndf3 (19.Bf3 Ne5 20.Qc2 Nf3 21.Nhf3 dc4 22.dc4 Rd8+=) 19...Nd6 20.g5 (20.cd5 Bd5 21.e4 Be6+=) 20...Rae8-/+ 21.Qd2 Ne5 22.gf6 (22.g6 h6-/+) 22...Rf6 23.Ne5 (23.Rdf1 dc4 24.Ne5 Rf1 25.Rf1 Re5 26.dc4 Qe7-/+) 23...Re5 24.cd5 Rh6 (24...Bd5 25.Rgf1 Rf1 26.Rf1 Qe7–+) 25.Nf3= Re8 (25...Rd5!? 26.e4 Rdh5+=) 26.e4+/– Nf7 (26...Rh3 27.Ng5 c4 28.Qc3= (28.Nh3? cd3 29.Kb1 Ne4 30.Qd3 Nc3 31.Kb2 Re2 32.Rd2 Na4 33.Kb1 Rd2 34.Qd2 Qc5–+)) 27.h4 (27.Ng5 Ng5 28.Qg5 Rg6+/– (28...Rh3?? 29.d6 Qf7 30.Rdf1+–)) 27...Qe7 (27...Rf6 28.Kb1+/–) 28.Rg2 Qf6 (28...Qd6 29.Rdg1 g6 30.Rf1+/–) 29.Qb2+– Rg6 (29...Qf4 30.Kb1 g6 31.Ng5 Ng5 32.hg5+– (32.Rg5?! Rh4 33.Rdg1 Qd6+/–)) 30.Rdg1 (30.Qf6 gf6 31.Rf2 f5+–) 30...Rg2+/– 31.Rg2 Qb2 (better is 31...Qh6!? 32.Kb1 Kh8+/–) 32.Kb2+– Kf8 33.Ng5 Ng5 34.Rg5 g6 35.Rg2 Ke7 (35...Bc8 36.Kc3+–) 36.Rf2 (36.Rf2 h6 37.Kc3+–; 36.Kc3 Rd8+–) 1–0. Wolf,M – Schultchen,Reinhard, corr DDR–ch M614, 1978.

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

8.d4 Nbd7 9.Bd3 (9.cd5 Nd5 10.ba6 Ba6 11.Ba6 Ra6=) 9...Bd6 (9...dc4 10.Bc4 cd4 11.Qd4=+) 10.Qe2 (10.0-0 dc4 11.Bc4 0-0=) 10...ab5 (10...cd4 11.Bd4 e5 12.c5 bc5 13.ba6–+) 11.ab5 Ra1 12.Ba1 0-0 (12...cd4 13.cd5 Bb4 14.Kf1 de3 15.de6 fe6 16.Qe3=+) 13.0-0 (13.cd5 Bd5 14.e4 c4+=) 13...Qe7 (13...dc4 14.Bc4 Bf3 15.gf3=+) 14.Nc3 e5 (better is 14...cd4!? 15.Nd4 dc4 16.Bc4 Rc8=) 15.de5+/– Ne5 16.Nd5 Nd5 17.cd5 c4 (better is 17...Nd3!? 18.Qd3 Re8+/–) 18.Bh7!+– (18.Bc4?! Nf3 19.gf3 Qg5 20.Kh1 Qh5+= (20...Bd5?? 21.Rg1 Qg1 22.Kg1 Bc4 23.Qc4+–)) 18...Kh7 19.Ne5 Be5 20.Qh5 Kg8 21.Qe5 (21.Be5!? f5 22.Bd4 Qd6+–) 21...Qe5+/– 22.Be5 Bd5 23.Rd1 Be6 24.Rd6 Rc8 25.Bc3 (25...Ra8 26.h3+/–) 1–0. Molarius,Reijo – Kekki,Jorma (2230), Finland ch corr, 1997.

8.cd5 ed5 9.ba6 Ba6 10.Ba6 Ra6 (10...Na6 11.0-0=) 11.Bf6 Qf6 12.Nc3 Nd7 (12...Qc6!?+=) 13.Nd5+/- Qd6 14.e4 Nf6 (14...Be7!?+/-) 15.Qb3+- Nd5 (better 15...Ra7 16.Nb6 Ne4+-) 16.Qb5 (16.ed5?! Ra5 17.0-0 Be7+-; 16.Qd5?! Qd5 17.ed5 Be7=) 16...Qd7 17.Qa6 Nb4 18.Qb6 Nc2 19.Ke2 Na1 20.Qb8 Qd8 21.Qb5 Qd7 22.Ra1 Bd6 23.e5 Bc7 24.Qc5 f6 25.a5 (25.Rc1 Bd8 26.Qb5 Ke7+-) 25...Kf7 26.a6 Be5 27.Ne5 (27.Qc4 Ke7 28.Ne5 fe5+-) 27...fe5 28.a7 (28.Qe5 Re8 29.Qe3 Qb5 30.Ke1 Re3 31.fe3 Qe5-/+) 28...Qg4 (28...Ra8+-) 29.Kf1 Ra8 (29...Qe4+-) 30.Qd5 (30.Qd5 Kg6 31.Qa8 Qc4 32.Kg1+-) 1-0. onur604 (2320) - Matwey_123 (2220), Casual Rapid game, lichess.org, 2021.

8.cd5 Nd5 9.Nc3 Nb4=.

8.Bc4 Nbd7 9.0-0 Bd6 10.d4 Bb8 (10...0-0 11.Nbd2=) 11.Nbd2 cd4 12.Nd4 Nc5 13.Be2 (13.f4 Bd6+=) 13...Qd5 (13...0-0 14.Nc4=) 14.Bf3+= Qd6 Threatening mate: Qxh2 15.g3 Bf3 16.Qf3 Nce4?? (better 16...Qd5+=) 17.Ne4+– Ne4 18.Qe4 Qd5 19.Qd5 ed5 20.Rac1 (20.Nc6 Bc7+–) 20...0-0 (20...Be5 21.Rfd1+–) 21.Ba3 (21.Nc6!? Bd6+–) 21...Re8 22.Nc6 Be5 (22...a6 23.Ne7 Kh8 24.Bb4 (worse 24.Nd5 ab5 25.Rc6 Ra4+–) 24...ab5 25.ab5+–) 23.Ne7 Kh8 24.Nd5 Rad8 25.Nc7 Rd2 (25...Rg8 26.f4 Bd6 27.Bd6 Rd6 28.Rfd1+–) 26.Bb4 (better 26.Ne8 Rd8 27.Nd6 Bd6 28.Bd6 h6+–) 26...Rc8 (26...Bc7 27.Bd2 Bb8 28.Rc6+–) 27.Bd2 (27.Bd2 Bc7 28.e4+–) 1–0. BeepBeepImAJeep (2615) – amaralandre, lichess.org, 2018.

8.Bc4 Be7 9.0-0 0-0 10.d4 Nbd7 11.Nbd2 cd4 12.Nd4 Nc5 13.Be2 Nce4 (13...Qc7!?=) 14.Ne4+= Ne4 15.Bf3 Rb8? (15...Bd6 16.Rc1+=) 16.Qc2 (better 16.Be4!? Be4 17.Qg4+–) 16...Nc5 (16...Rc8 17.Qe2 Bd6 18.Rac1+=) 17.Rfd1 Bf3 18.Nf3 Qc7? (better 18...Qe8+=) 19.Be5+– Qb7 20.Bb8 Qb8 21.a5 ba5 22.Ra5 Qb6 (22...Rc8 23.Ra2+–) 23.Qa2 (23.Ra2 Ra8 24.Nd4 a5+–) 23...Ne4 24.Rc1 (24.Qa1 Bf6 25.Nd4 Nd6+–) 24...Bf6 25.Ra6 (25.Rc6!? Rd8 26.g3 Qb8+–) 25...Qb5+– 26.Ra7 (better 26.Qc4 Qc4 27.Rc4+–) 26...Qf5?? (better 26...Nc3 27.Rc3 Bc3=) 27.Ra5 Qg4 28.Ra4 (28.Ra8 Be7+–) 28...Qg6 29.Qc2 (29.Ra8!? Be7+–) 29...Ng5 (29...Nc3 30.Rc4 Qc2 31.Rc2+–) 30.Qg6 hg6 (30...Nf3 31.gf3 fg6 32.Ra7+–) 31.Ng5 Bg5 32.Rc7 Bf6 33.g3 Rd8 34.Raa7 Rd1 (34...Rf8 35.Kg2+–) 35.Kg2 Rd2 (35...Kh7 36.Rf7 Kh6 37.Rfd7+–) 36.Rf7 g5 37.Rfb7 (37.h3 Rb2+–) 37...e5 (37...Rd6 38.Kf3+–) 38.h3 Kh7 39.Rb4 Kg6 40.Raa4 Rc2 41.Kf3 Rd2 42.Rb6 Rd1 43.Ra5 Rg1 (43...Kh7 44.Ra7 Kg6 45.Re7+–) 44.Re5 Kh6 (44...Rh1 45.Kg4+–) 45.Re4 (45.e4 Kh7 46.Rd5 Re1+–) 45...Rh1 46.h4 (46.Kg4 Kh7+–) 46...gh4 47.Rh4 Rh4 48.gh4 Kg6 49.Kg4 Kf7 50.h5 Be5 51.Rc6 (better 51.Kf5!? Bh2+–) 51...Bf6 52.f4 Kf8 (52...Bb2 53.e4 Kg8 54.e5+–) 53.e4 (better 53.Rf6 gf6 54.h6 Kg8+–) 53...Kf7 (53...Bd4 54.Kf5+–) 54.e5 (better 54.Rf6!? gf6 55.Kf5 Kg7+–) 54...Be7 (54...Bd8 55.Kf5 Ba5 56.e6 Ke7 57.Kg6+–) 55.Kf5 Bf8 (55...Bh4+–) 56.Rc7 Kg8 57.Kg6 Bb4 (57...Kh8 58.Rc8 Kg8 59.e6 Kh8 60.Rf8) 58.Rc8 (58.Rc8 Bf8 59.e6 Kh8 60.Rf8) 1–0. BeepBeepImAJeep (2590) – AncientAlien (2005), lichess.org, 2017.

8.Bd3?? cd3 9.0-0 a6–+.

8.Bd3?? Be7 9.Bc4= 0-0 10.Be2 Nbd7 11.0-0 Re8 12.d4 cd4 13.Nd4 Nc5 14.Nd2 Rc8 15.Bf3 Nd5 16.Nc4 Bf6 17.Rc1 e5 18.Nf5 e4 19.Be2 Bb2 20.Nb2 Qf6 21.Nd4 Rcd8 (21...Qg5 22.Qd2=) 22.Bc4 Nf4 23.Qg4 Ng6 24.a5 Ne5 25.Qe2 (25.Qg3 Bd5=) 25...Ned3 (25...Nf3!? 26.Kh1 Nd4 27.ed4 Rd4-/+) 26.Nd3 (26.Ra1 Qg6 27.Rfd1 Bd5 28.Bd5 Rd5 29.Nd3 Nd3 30.ab6 ab6=) 26...ed3=+ 27.Bd3? (better 27.Qa2=+) 27...Rd4–+ 28.ab6?? (28.Bh7 Kh8 29.ab6 ab6–+) 28...ab6 (better 28...Nd3 29.Rc2 Qg5–+) 29.Bb1? (29.Bh7 Kh8 30.Bc2 Qh6–+) 29...Rdd8 (29...Qg5 30.g3–+) 30.Rfd1 g6 (30...Qg5 31.g3–+) 31.g3? (31.Ba2 Qg5 32.Qf1 Bf3 33.Rd8 Rd8–+) 31...Qe6 (31...Nb3 32.Rd8 Qd8 33.Rd1–+) 32.f3 (32.Rd8 Rd8 33.Ba2–+) 32...Rd1 33.Rd1 Qe3 34.Qe3 Re3 35.Ba2 (35.Be4 Be4 (worse 35...Ne4 36.fe4 Rb3 37.e5–+) 36.fe4 Re4–+) 35...Rd3 (35...Bf3 36.Rf1–+) 36.Re1 (36.Rd3 Nd3 37.f4 Nb2–+) 36...Rd6 (36...Bf3!? 37.Bc4 Rd2 38.Re3–+) 37.Re8 Kg7 38.Rb8 (38.Bc4 Bf3 39.Kf2 Bd5–+) 38...Rd7 (38...Rd1 39.Kg2 Rd2 40.Kh3 Ra2 41.f4–+) 39.f4 (39.Bc4 Bf3 40.Kf2 Bb7–+) 39...Na4 (better 39...Rd1 40.Kf2 Rd2 41.Ke3 Ra2–+) 40.Bc4 Nc3 41.Kf2 Bd5 42.Bf1 Rd6 43.Ke3 (43.Rc8 Ne4 44.Ke3 h6–+) 43...Be6 (43...Nd1 44.Ke2 Bc4 45.Ke1 Bf1 46.Kf1–+) 44.Bg2 (44.h3 Nd1 45.Ke2 Bc4 46.Ke1 Bf1 47.Kf1 Nc3–+) 44...Nd5 (better 44...Nb5!? 45.Bf1 Na3 46.Bd3–+) 45.Kf2 Nb4 46.Bc6 Nc6 47.Rb6 Rd2 48.Ke3 (48.Ke1 Rh2 49.bc6 Bd5–+) 48...Rc2 (better 48...Na5 49.Kd2 Nc4 50.Kc3 Nb6 51.Kb4–+) 49.bc6 (49.Rc6 Rh2 50.Kd4 Bd7–+) 49...Bd5 50.c7 (50.g4 Rc6 51.Rc6 Bc6–+) 50...Rc7 51.Rd6 Be6 52.Rd2 Re7 53.Kf2 Bf5 54.Re2 Re2 55.Ke2 Kf6 56.Ke3 Be6 57.h4 (57.Ke4–+) 57...Kf5 58.Kf2 (58.Ke2 Bc4 59.Kf3 Bd5 60.Kf2 h5–+) 58...Bd5 59.h5 Kg4 60.Ke3 Kg3 61.f5 (61.h6 f5 62.Kd4 Kf4 63.Kd5–+) 61...gf5 62.h6 f4 63.Ke2 f3 64.Ke3 f2 65.Kd4 f1Q 66.Kc5 Qf6 (66...Qc4 67.Kd6 Qc6 68.Ke7 Qe6 69.Kd8 Qd6 70.Ke8 Bc6 71.Kf7 Qe5 72.Kf8 Qf6 73.Kg8 Bd5 74.Kh7 Qf7 75.Kh8 Qg8) 67.Kb4 Qh6 68.Kc5 Qc6 69.Kd4 (69.Kb4 Qd6 70.Kb5 h5 71.Ka4 Qb6 72.Ka3 Qb3) 69...Qc4 (69...Kf4 70.Kd3 Qc4 71.Kd2 h5 72.Ke1 Ke3 73.Kd1 Bf3 74.Ke1 Qe2) 70.Ke5 f5 71.Kf6 (71.Kd6 Qc6 72.Ke5 Qc5 73.Kf6 Qd6 74.Kg7 Qg6 75.Kf8 Qf7) 71...f4 (71...Qc7 72.Kg5 Qf7 73.Kh6 Qg6) 72.Kg7 (72.Ke5 Qc5 73.Kf6 Qd6 74.Kf5 Qe6 75.Kg5 Qg6) 72...f3 (72...Qe4 73.Kh8 f3 74.Kg7 Qg6 75.Kf8 Qf7) 73.Kh6 (73.Kf6 Qc7 74.Kg5 Qf4 75.Kh5 Qh4) 73...f2 (73...Qd3 74.Kg7 Qg6 75.Kf8 Qf7) 74.Kg5 (74.Kg7 Qh4 75.Kh8 f1Q 76.Kg7 Qff6) 74...f1Q (74...Qf4 75.Kh5 Qh4) 75.Kh6 Qf6 76.Kh5 (76.Kh7 Qd3) 76…Qch4 (76...Qe2) 0–1. BeepBeepImAJeep (2765) – LouiVos (2715), lichess.org, 2020.

8.d4 0-0 9.Nbd2 Nbd7 10.Nb3 Rc8 11.Rc1 Re8 12.Be2 dc4 13.Bc4 cd4 14.Nfd4 (14.Nbd4!? Ne5 15.Ne5 Be5 16.0-0 Rc4 17.Rc4-/+) 14...Bg2-/+ 15.Rg1 Bb4 16.Nd2 Be4 17.Qb3 Bd2 18.Kd2 Re7 (18...Rc4 19.Qc4 Ne5 20.Qc3 Nf3 21.Ke2 Ng1 22.Rg1-/+) 19.Ke2 Nc5 20.Qd1 Rd7 21.f4 Bg6 22.Qe1 Na4 (better is 22...Nfe4!?–+) 23.Nc6-/+ Qe8 24.Bd4 (24.Bf6!? gf6 25.Qh4-/+) 24...Ne4 25.Qh4 Nd6 26.Ne5 Nf5 27.Rg6?? (27.Qf2–+) 27...Nh4 (27...fg6?? 28.Be6 Kf8 29.Nd7 Qd7 30.Bd7 (30.Rc8?! Qc8 31.Bf5 gf5+/–) 30...Nh4 31.Rc8 Ke7 32.Rc7+–; 27...hg6 28.Qh3–+) 28.Rg7 Kg7 29.Nd7 Kh6 30.Nf6 Qd8 (better is 30...Rc4!? 31.Ne8 Rc1 32.Nf6–+) 31.Ng4 Kg6 32.Bd3 (32.Ra1 Rc4 33.Ne5 Kh5 34.Nc4 Qd5–+) 32...f5 33.Ne5 Kh5 34.Kf2 (34.Kf2 Rc1 35.Be2 Nf3 36.Nf3–+). Kalanyos,Ferenc (2000) – Mike,Janos, HUN–chT2 Asztalos, 2007.

8.cd5 ed5 9.Be2= Nbd7 10.Nh4 (10.0-0 0-0=) 10...Bc7 (10...Be5 11.Be5 Ne5 12.d4=) 11.0-0 0-0 12.Nf5 Re8 13.f4 Re6 (13...a6 14.Nc3=) 14.Rf3 (14.Nc3 a6=) 14...d4 (14...a6 15.Rg3 g6 16.Nc3=) 15.Rg3 g6 16.Bc4 Bd5 17.Na3 (17.Bd5 Nd5 18.Qh5 N7f6=) 17...Qf8 (17...a6 18.ba6 Bc4 19.Nc4=) 18.Rc1 (18.Qb3 Bc4 19.Nc4 Ne4 20.ed4 Ng3 21.Qg3 Nf6+=) 18...Rd8 (better is 18...Rae8+=) 19.d3 (better is 19.Bd5!? Nd5 20.Qf3+=) 19...Rde8+= 20.Ra1? (20.ed4 Bf4 21.dc5 Bc1 22.Qc1 Re1 23.Qe1 Re1 24.Kf2 Re6–+) 20...Kh8 (20...de3!? 21.Bd5 Nd5–+) 21.Nd4 (21.Bd5 Nd5 22.Nd4 cd4 23.Bd4 Kg8-/+) 21...cd4-/+ 22.Bd4 (22.Bd5 Nd5 23.Bd4 Kg8-/+) 22...Kg8 23.Bd5 Nd5 24.Nc2 Nc5 25.Ra3 Rd8 26.Kh1 (26.Qh5 Qd6-/+) 26...Qe7 (26...Qd6 27.Qg4-/+) 27.Qb1 (better is 27.Qh5 Qd6 28.Be5-/+) 27...Nf4! 28.Bc5 (28.ef4 Theme: Deflection from d4 28...Rd4) 28...Qc5 (28...Qc5 29.ef4 Re2+=). Schulz,Hans_Juergen – Nemec,Zdenek, TT–12 ETC, 2004.

8.cd5 Bd5 9.Nc3+=.

8.Be2 0-0 9.0-0 e5 (9...Nbd7 10.cd5 Nd5 11.Na3=) 10.cd5 (10.Ne5 a6+–) 10...Nd5 (10...e4!? 11.Ne5 Bd5=) 11.Be5+= Be5 12.Ne5 Nd7 13.Nd7 Qd7 14.Nc3 Nc3 (14...Rad8 15.a5+=) 15.dc3+– Qf5 16.Bf3 Bf3 (16...Rad8 17.Qb1 Qb1 18.Rfb1 Bf3 19.gf3+–) 17.Qf3+– (17.gf3?! Qf6=) 17...Qf3 18.gf3 Rfd8 19.Rfd1 (19.a5 c4+–) 19...Kf8 20.c4 (20.Kf1 c4+–) 20...Ke7 21.Kf1 (21.Rd8 Rd8 22.a5 g5+–) 21...Ke6 (21...Rd1 22.Rd1 a6 23.f4+=) 22.Ke2 Ke5 (22...Rd1 23.Rd1 a6 24.f4+–) 23.f4 Ke4? (23...Ke6 24.a5+–) 24.f3 (better 24.Rd8 Rd8 25.Rg1+–) 24...Kf5+– 25.Ra2 (25.a5 h6+–) 25...Rd1 26.Kd1 Rd8 (26...a6 27.a5 ab5 28.ab6+–) 27.Rd2 Rd2 28.Kd2 h5 29.h4 f6 (29...Ke6!?+–) 30.Kd3 g5? (better 30...g6+–) 31.fg5 fg5 32.Ke2 (32.hg5 Kg5 33.Ke2 Kh4+–) 32...Kf6? (better 32...g4 33.f4 Ke4+–) 33.Kf2 Kf5 34.Kg3 g4 35.fg4 hg4 36.h5 (better 36.e4 Ke4 37.Kg4+–) 36...Ke4 (36...Kg5 37.h6 Kh6 38.Kg4 Kg6+–) 37.h6 Ke3 38.h7 Kd4 39.h8Q Kc4 40.Qb2 (40.Qh7 Kb3 41.Qa7 Kb4+–) 40...Kd3 41.Kg4 (41.Qg7 c4 42.Qa7 c3+–) 41...c4 42.Qc1 (42.Kf3 c3 43.Qe2 Kd4 44.Qe4 Kc5 45.Kf4 a6 46.ba6 Kd6 47.a7 b5 48.a8Q Kd7 49.Qac6 Kd8 50.Qee8) 42...c3 43.Kf4 Kc4 44.Ke4 Kb4 (44...a6 45.ba6 b5 46.a7 c2 47.Qc2 Kb4 48.Qb2 Kc5 49.Qd4 Kc6 50.a8Q Kc7 51.Qdd8) 45.Kd4 Ka4 (45...c2 46.Qb2 Ka5 47.Qc3 Ka4 48.Kc4 c1Q 49.Qc1 a5 50.Qa1) 46.Kc4 Ka5 (46...a5 47.Qa1) 47.Qa1 (47.Qa3) 1–0. BeepBeepImAJeep (2555) – destran (2135), lichess.org, 2016.

8.Be2 0-0 9.d4 Nbd7=+ 10.dc5 Nc5 11.cd5 Bd5 12.Nd4 Nce4 13.0-0=+ Rc8 14.Nd2 Be5 15.Nc6? Bc6–+ 16.Be5 Bb7?? 17.Ne4 Ne4= 18.Bf3 Nc5 19.Bb7+/– Nb7 20.Qf3 Nc5 21.Qg3 f6+= 22.Bd4 e5 23.Bb2 Qd5 24.Rad1 Qb3 25.Ba1 Rcd8 26.e4?? Qa4 27.Rd8 Rd8 28.h3? Qe4 29.Bb2 Qb4 30.Bc3 Qb5 31.Bd2 Rd2 32.Qe3 Qd3 33.Qe1 a5 34.Qa1 h6 35.Qc1 a4 36.f3 a3 37.Qa1 a2 38.Rc1 Nb3 39.Rc8–+ Kh7 40.Qf1 Rd1 41.Rh8 Kh8 42.Kf2 Qf1 (42...Qf1 43.Kg3 Qc4 44.Kf2 Qh4 45.g3 Qd4 46.Ke2 Nc1#; 42...Qd4 43.Kg3 Rf1 44.Kh2 Qf4 45.g3 Qd2#) 0–1. OutOfBounce – mil, Live Game Caissa's Web, 2005.

8.Be2 a5 9.0-0 Nbd7 10.d4 dc4 11.Bc4 (11.Nbd2 0-0=) 11...Qc7 12.h3 (12.dc5 Nc5 13.Nbd2 Qe7=) 12...h6 (better 12...cd4!? 13.Nbd2 de3 14.fe3 Rd8-/+) 13.Nbd2= cd4 14.Bd4 e5 15.Bb2 Nc5 16.Nh4 0-0-0 (16...Rd8!?=) 17.Rc1+= Kb8 (better 17...Rd7+=) 18.Nb3 (18.Nf5 Bf8 19.f4 ef4 20.ef4 Qd7 21.Be5 Ka8+=) 18...g6 (18...Na4!? 19.Qe2 Nb2 20.Qb2 g6=+) 19.Qe2 (19.Nc5 Bc5 20.Qe2 Rhe8+=) 19...Nfe4 (19...Na4 20.Ba1 Ne4 21.Rc2=) 20.Rfd1 (20.Nc5 Bc5 21.Nf3 f6+=) 20...Rhg8 (20...Na4 21.Nf3=+) 21.f3 (21.Nc5 Nc5 22.Nf3 e4+=) 21...Nb3= 22.Bb3 Nc5 23.Bd5 (23.Ba3 e4 24.fe4 Be4=) 23...Qe7 (23...Bd5 24.Rd5 Qe7 25.Rc4=+) 24.g3 (24.Bb7 Kb7 (worse 24...Qb7 25.Rd6 Rd6 26.Be5+/-) 25.Rc4 Qe6=+) 24...Bd5 25.Rd5 f5 (25...Bc7 26.Rd8 Rd8 27.Ba3=) 26.Rcd1 (26.Ba3 A) 26...Na4? 27.Rd6 Rd6 28.Qc4+- (28.Bd6?! Qd6 29.Qc4 Rd8 30.Qa4 e4+-); B) 26...e4 27.f4 Qf6= (27...Na4? 28.Rd6 Rd6 29.Qc4+-)) 26...f4 27.ef4 ef4 28.Qe7 Be7 29.Rd8 (29.Be5 Kb7=) 29...Bd8 30.Kg2 (30.Be5 Bc7 31.Bf4 Bf4 32.gf4 Na4=) 30...fg3 (30...Bc7 31.Bc1 Na4 32.Bf4 Bf4 33.gf4-/+) 31.Kg3 (31.Be5 Bc7 32.Bc7 Kc7=+) 31...Bh4 (better 31...Na4!? 32.Be5 Bc7-/+) 32.Kh4= Na4 33.Be5 Kc8 (33...Ka8 34.Rd6=) 34.Rd6 Kb7 35.Rd7 Kc8 36.Rc7 Kd8 37.Ra7 Re8 38.f4 Re6 39.Rh7 h5 40.Kg5 Nc5 41.Ra7 (41.Rh8!? Kd7 42.Rh7 Ke8 43.Rh8 Ke7 44.Rh7 Kf8 45.Rh8 Kf7 46.Rh7 Ke8 47.Rh8 Ke7 48.Rh7 Ke8=) 41...Ne4-/+ 42.Kh4 Nd6 43.Ra6?? (better 43.Bd6 Rd6 44.Kg5=+) 43...Nb5-+ 44.Ra8 Kd7 45.Kg3 Nd6 46.Ra7 (46.Kf3 Kc6-+) 46...Kc6 47.Kf3 Nc4 48.Rc7 Kb5 49.Ke2 (49.Ke4-+) 49...Ne5 50.fe5 Re5 51.Kd3 Rg5 52.Rg7 (52.Ke2 Rg3 53.h4 a4-+) 52...Rg3 53.Kc2 Kc4 (53...h4 54.Rg8-+) 54.Kd2 (54.Rc7 Kb4-+) 54...a4 55.Kc2 (55.Rc7 Kb4 56.h4 b5-+) 55...Rg2 56.Kb1 Kb3 57.Kc1 b5 58.Rb7 b4 59.Ra7 Rg1 (better 59...Rc2!? 60.Kd1 a3 61.Ke1-+) 60.Kd2 a3 (60...a3 61.Ke3 Rg3 62.Kd4 Ka2-+) 0-1. joseph04ventura (1980) - geochess (2280), Rated Blitz game, lichess.org, 2013.

8.Be2 Nbd7 9.0-0 e5 10.d4 e4 11.Nfd2 (11.Ne5 cd4 12.Nd7 Qd7 13.Qd4 Rd8=) 11...cd4 (11...Qc7 12.h3=) 12.Bd4 Be5 (12...Qc7 13.h3=) 13.Be5 (13.Nc3 Qc7 14.Be5 Qe5+=) 13...Ne5= 14.cd5 (14.a5 dc4 15.Nc4 Nc4 16.Bc4 Rc8 17.Qd8 Rd8=) 14...Qd5 (14...Rc8 15.a5=) 15.Nc3+= Qe6 16.Qb3 (16.Rc1 Rd8=) 16...Qb3= 17.Nb3 0-0 18.Nd4 Rfd8 19.Rfc1 Nd5 (19...a6 20.Rab1 ab5 21.Rb5=) 20.Nd5 (20.Ne4!? Ne3 21.Nf6 gf6 22.fe3+–) 20...Bd5+= 21.Rc7 a6? (21...Nd3 22.f3+=) 22.Rac1?? (better 22.ba6 Nd3 23.a7+–) 22...ab5 23.ab5 Ra2 (23...Kf8 24.Rd1=) 24.Bf1 (24.Rc8 Ra8 25.Rd8 Rd8+=) 24...g6 (24...Nd3 25.Rd7 Raa8 26.Rcc7=) 25.g3 (25.Nc6!? Nc6 26.bc6+–) 25...Rb2 (25...Nd3 26.R1c2 Rc2 27.Rc2=+) 26.Bg2 (26.Rc8 Rc8 27.Rc8 Kg7=) 26...Nf3 (26...Nd3!? 27.Rf1 f5=) 27.Bf3+= ef3 28.h4 Ra8 29.Rc8 (29.g4 Raa2 30.R1c2 Rc2 31.Rc2 Rc2 32.Nc2 Kf8+=) 29...Rc8 30.Rc8 Kg7 31.Rd8 Be4 (31...Bc4 32.Rd6 Rb1 33.Kh2=+) 32.Re8 (32.g4!?+=) 32...f5= 33.Re7 Kf8 (33...Kf6 34.Ra7= (34.Rh7? Rb1 35.Kh2 Rf1–+)) 34.Rc7 Rd2 35.Rh7 (35.Ne6 Ke8=) 35…Rd4?? (35...Rd4 36.ed4 Bd3+–; better 35...Rd1 36.Kh2 Rf1 37.Ne6 Kg8 38.Rg7 Kh8=+) 0–1. RichardSommer (2050) – conadaprima (2030), lichess.org, 2020.

8.Nc3 dc4 9.Bc4 Be7 (9...Bd6 10.0-0=) 10.d3 0-0 11.0-0 Qc7 12.Nd2 Bd6 (12...Ne5 13.f4 Nc4 14.Nc4=) 13.f4 Rad8 14.Nce4 Be7 15.Qf3 Ne4 16.Ne4 Nf6 17.Be5 Qc8 18.a5 Kh8 19.ab6 ab6 20.Qg3 (20.Ra7 Ne4 21.de4 Bd6+=) 20...Be4 21.de4 Qb7 22.Bf6 gf6 (22...Bf6 23.e5 Be7 24.Qg4=) 23.Qf3+= White prepares the advance f5 23...Rd2 (23...Rd6 24.f5+=) 24.f5+/– ef5 (24...Rg8 25.Rf2 Rf2 26.Kf2+/– (worse is 26.Qf2 Qe4 27.Be2 c4+=)) 25.Qf5 Rg8 Threatening mate... how? 26.g3 Qc7 (26...Rg5 27.Qf3+=) 27.Qf3 Rf8 (27...Rgd8 28.Bf7 c4 29.Bd5+=) 28.Rf2 (28.Rfd1 Rd1 29.Rd1 Qe5+/–) 28...Qe5 29.Ra7 Rf2 30.Qf2 (30.Kf2 Rd8+/–) 30...Qe4 31.Qf4 Qb1 (31...Qf4 32.ef4 Bd8 33.Bf7+/– (worse is 33.Rf7 Rf7 34.Bf7 Kg7=)) 32.Bf1 Bd8 33.Rd7 Kg7 34.Qg4 (34.Qd6 c4 35.Rd8 Rd8 36.Qd8=) 34...Kh8+/– 35.Qh5 (35.e4 Qb3+/–) 35...Qc1+= 36.Kf2 Qb2 (36...Re8 37.e4 (37.Qf7?! Qe3 38.Kg2 Qe4 39.Kg1 Qe3 40.Kh1 Qf3 41.Kg1 Qe3 42.Kh1 Qf3 43.Kg1 Qe3=) 37...Qc2 38.Be2 Qe4 39.Bd3+– (39.Rf7?! Re5 40.Qg4 Qg4 41.Bg4 Kg8=)) 37.Be2+/– Qe5 38.Qh6 Threatening mate: Qxf8 38...Be7 (38...Kg8 39.Bd3 f5 40.Rd8 Rd8 41.Qg5 Kh8 42.Qd8 Kg7 43.Qb6+–) 39.Rb7+/– Qf5 (39...Ra8 40.Rb6 Qf5 41.Qf4+/–) 40.Qf4 Qf4 41.gf4 Bd8 42.e4 Kg8 43.Bc4 f5 (43...Kg7 44.Rd7+/–) 44.e5 Kg7 45.Ke3 Kg6 (45...h5 46.h3+/–) 46.Bd5 Kg7 47.Kd3 Kg8 (47...h6 48.Kc4+/–) 48.Kc4 Kg7 49.Bc6 (49.h3 h6+/–) 49...Rg8 50.e6 (50.Rd7 Rf8+/–) 50...Kf6 51.ef7 Do you see the mate threat? 51...Rf8 52.Be8 Ke6 53.Rd7 Be7 54.Rc7 Bd6 55.Rc6 Ke7 56.Kd5 (56.Kd5 Bf4 57.Rb6+–) 1–0. Pagano,Nunzio – Nemec,Zdenek, b4/03/15, 2003.

8.d3 dc4 9.dc4 Be7 10.Be2 0-0 11.0-0 Qc7 12.Nbd2 Rad8 13.Qc2 Ng4 14.h3 Nge5 15.Ne5 Ne5 16.Be5 Qe5 17.Nf3 Bf3 18.Bf3 Rd6 19.Rad1 Rfd8 20.Rd6 Bd6 21.g3 f5 22.Rd1 Qf6 23.Qc1 g5 24.Rd3 f4 25.ef4 gf4 26.g4 Be5 27.Rd8 Qd8 28.Qd1 Qd4 29.Qd4 cd4 30.Be4 ½–½. hal1958 – Matu, playchess.de, 2002.

8.d3 Bd6 9.Nbd2 Rc8 10.a5 (10.Be2 0-0=) 10...0-0 (10...ba5 11.Bc3=) 11.a6 Ba8 12.Qc2 d4 (12...Qe7 13.Be2=) 13.e4 (13.ed4 cd4 14.Bd4 Nd5=) 13...Ng4 (13...Bf4 14.Be2=) 14.h3 (14.Be2 f5=) 14...Nge5+= 15.0-0-0 (15.Be2 f5+=) 15...f5 (15...Nf3 16.Nf3 f5 17.Be2+=) 16.Ne5 Ne5 17.f3 Qh4 18.Kb1 Ng6 (18...Rcd8 19.Bc1-/+) ½–½. De Visser,Arno – Gouw,Carol Peter, corr NED–ch17, 1989.

8.d3 Bd6 9.Be2 Qc7 10.Nbd2 dc4 11.Nc4 0-0 12.Nd6 Qd6= 13.Qc2 Nd5 14.0-0 Rac8 15.Nd2 Ne5 16.Ne4 Qc7 17.Rfc1 Nb4 18.Qb1 Rfd8 19.d4+= Nd7 20.dc5 bc5 21.Ng5 g6 22.Bc4 h6?? 23.Ne6 Qd6 24.Nd8 Rd8 25.Rd1 Qb6 26.Qc1 a5 27.Qc3 Nf6 28.Rd8 (28.Rd8 Qd8 29.Qf6 Qf6 30.Bf6+–) 1–0. mic (2100) – jrgcst (2185), net–chess.com, 2008.

8.d3 Bd6 9.Be2 h6 10.0-0 0-0 11.Nbd2 e5 12.d4 (12.cd5 Bd5 13.Qc2 Qc7=) 12...e4 13.Ne1 Qc7 14.g3 (14.h3 Rad8=+) 14...Rae8 15.Ng2 Nh7 (15...Rc8 16.Rc1=) 16.f3 f5 (16...cd4 17.Bd4 Ng5 18.Rc1 dc4 19.f4 (worse 19.Bc4 ef3 20.Nf4 Nc5-/+) 19...Nf3 20.Nf3 ef3 21.Bf3 Bf3 22.Qf3+= (worse 22.Rf3 Re7=)) 17.fe4 (17.dc5 Bc5 18.a5 ba5 19.cd5 Nhf6=) 17...de4 (17...fe4 18.dc5 Bc5 19.Qb3+=) 18.d5 (18.Nh4 f4 19.gf4 cd4 20.Bd4 Nhf6+=) 18...Ne5 19.Nf4 Bc8 20.Bh5 (better 20.a5+=) 20...Ng4? (20...Rd8 21.a5=) 21.Bg4 (better 21.Be8 Re8 22.Qe2+–) 21...fg4= 22.Ng6 (22.Qc2 Ng5=) 22...Rf3 (22...Rf1 23.Qf1 (23.Kf1? Qf7 24.Nf4 g5–+) 23...Ng5 24.Kh1=+) 23.Rf3 (better 23.Nf3 gf3 24.Nf4+=) 23...gf3-/+ 24.Nf3? (better 24.Qe1-/+) 24...Bg4–+ 25.Ngh4 (25.Nge5 Bh5 (25...Re5?! 26.Be5 Be5 27.d6 Qd6 28.Qd6 Bd6 29.Nd2–+) 26.Qe1 ef3–+ (26...Be5?! 27.Ne5 Re5 28.Be5 Qe5 29.h4-/+; 26...Bf3?! 27.Nf3 ef3 28.a5–+)) 25...Ng5 (25...Bf3?! 26.Nf3 ef3 27.Qf3–+) 26.Qe2 (26.Qc2 ef3 (26...Nf3?! 27.Nf3 Bf3 28.Qf2–+; 26...Bf3?! 27.Ng2–+) 27.Kh1 Ne4–+) 26...Nf3 (better 26...ef3!? 27.Qe1–+) 27.Nf3 Bf3 (27...ef3 28.Qf2–+) 28.Qd2 (28.Qf2 Rf8–+) 28...Re5! 29.Be5 Be5 30.Ra2 h5 (30...Bg3 31.a5–+) 31.a5 h4 (better 31...Bg3!? 32.ab6 ab6–+) 32.ab6-/+ ab6 (32...Qb6?! 33.d6 Qd6 34.Qd6 Bd6 35.gh4+=) 33.Ra8 (33.gh4 Qf7-/+) 33...Kh7 34.Rf8 (34.gh4 Qd7 35.Rf8 Qg4 36.Kf1 Qh3 37.Kg1 Qh4–+) 34...hg3–+ 35.hg3 Bf6 (better 35...Bg3 36.Qc2 Kh6 37.Rh8 Kg5–+) 36.d6? (better 36.Qh2 Kg6 37.Rh8-/+) 36...Qd7?? (36...Qa7 37.Qf2 Qa1 38.Qf1 Qc3 39.Rf6 gf6–+ (39...Qe3?! 40.Qf2 Qc1 41.Qf1 Qe3 42.Qf2 Qc1 43.Qf1 Qe3=)) 37.Qd5= Qg4 Do you see the mate threat? 38.Qg8 (38.Kh2!? Bd1 39.d7 Qe2 40.Kh3 Qf1 41.Kh2 Qf2 42.Kh3 Qf1 43.Kh2 Qe2 44.Kh3 Qg4 45.Kh2 Qe2=) 38...Kg6=+ 39.Qf7 Kh7 (39...Kg5!? 40.Qd5 Kh6-/+) 40.Qg8= Kg6 The mate threat is Qxg3 41.Qf7 Kh7 (41...Kg5 42.Qd5 Kh6 43.Kh2-/+) 42.Qg8= Kg6 Do you see the mate threat? 43.Qf7 Kh7 (43...Kg5 44.Qd5 Kh6 45.Kh2-/+) 44.Qg8= Kg6 Threatening mate: Qxg3 45.Qf7 ½–½. retiponziani (1955) – ddjjbb4455 (2025), ChessWorld.net, 2019.

8.cd5 Nd5 9.Na3 N5f6=.

8.cd5 Nd5 9.Na3 N7f6=.

8.Be2 a5 9.0-0 Bd6 10.cd5 (10.Nc3 0-0+=) 10...ed5= 11.d4 (11.Nc3 0-0+=) 11...c4 (11...0-0 12.dc5 Nc5 13.Nc3+=) 12.Nc3 (12.Ne5 0-0=) 12...Qe7 (12...0-0 13.Qc2+=) 13.Nd2 Bb4 (13...0-0 14.Bf3 Rac8 15.Qc2+=) 14.e4 Bc3 (14...de4 15.Nc4 0-0 16.Ne3+=) 15.Bc3= Rc8 (15...de4 16.Bb2 Qe6 17.Nc4=) 16.ed5 (16.e5 Ne4 17.Bb2 c3+/–) 16...Bd5 (16...Nd5 17.Rc1 0-0 18.Bc4+= (18.Nc4 Nf4 19.Ne3 Bg2-/+)) 17.Bc4 (17.Re1 0-0+=) 17...0-0 (better is 17...Bc4 18.Nc4 0-0=) 18.Qb3 (18.Bd5 Rc3 19.Bc6 Rd3+=) 18...Qd6 (better is 18...Rc4!? 19.Nc4 Qe4+=) 19.Bb2 (19.Rac1 Rc4 20.Nc4 Qe6 21.Ba5 ba5+=) 19...Ng4 (19...Rc4 20.Nc4 Qe6 21.Rac1=) 20.g3 (20.f4!? Rc4 21.Nc4+/–) 20...Qh6 (20...Rc4 21.Nc4 Qe6 22.Rfe1 Bc4 23.Re6 Bb3 24.Rd6+=) 21.h4= Bc4 (better is 21...Rc4!? 22.Nc4 Qe6=) 22.Nc4+/– Qe6 23.Rac1 Ngf6 (23...Rfe8 24.Qd3 Ngf6 25.Ne3+/–) 24.Kg2 (24.Qe3 Qd5 25.Ne5 Rc1 26.Rc1 Re8+–) 24...Qd5 (24...Rfe8 25.Qd3 h6 26.Ne5+/–) 25.f3 (25.Qf3!? Rfe8+–) 25...Rfe8+/– 26.Qd3 Re6? (better is 26...h6+/–) 27.Ne3+– Qb7 28.Rc8 (28.d5 Ree8 29.Bf6 Nf6+–) 28...Qc8 29.d5 Nc5 (29...Re8 30.Bd4+–) 30.Qa3 Rd6 (30...Re8 31.Bf6 gf6 32.Ng4 Re2 33.Rf2 Rf2 34.Kf2+–) 31.Be5 Rd5 (31...Rd7 32.Bf6 gf6 33.Qa1+–) 32.Nd5 Nd5 33.Bd4 Nb4 (33...Ne6 34.Qc1 Qc1 35.Rc1 Kf8+–) 34.Rc1 Qf5 (34...Qe8 35.Qe3 Ne6 36.Bb6 Nd5+–) 35.Qe3 Qe6 (35...h6 36.Bc5 bc5+–) 36.Bc5 Qa2 (36...bc5 37.Qe6 fe6 38.Rc5+–) 37.Kh3 h6 38.Bb6 Nd5 39.Rc8 Kh7 40.Qe4 g6 41.Bd4 Nf6 (41...Qg2 42.Kg2 f6 43.Qd5 h5 44.Qd7 Kh6 45.Rh8) 42.Bf6 Qe6 43.Qe6 (43.Qe6 fe6 44.Rh8) 1–0. Hess,Helmut (1615) – Till,Heinz, 14sen.Bad Sooden–Allendorf, 2002.

8.Be2 dc4 9.Bc4 Bd5 10.Be2 Be7 11.0-0 0-0 12.d4 cd4 13.Nd4 Nc5 14.Nd2 (14.Nc3 Bb7=) 14...Bb7 (14...Qc7 15.f3=) 15.Bf3 Qc7 16.Bb7 Qb7 17.Nc6 Nd5 18.Nc4 Rfd8? (better 18...a6+=) 19.Nd8+– Rd8 20.Qg4 Do you see the mate threat? 20...Bf6 21.Rfd1 Qc7? (21...Bb2 22.Nb2 Qe7 23.Rac1+–) 22.Bf6 (better 22.Rd5 Rd5 23.Bf6+–) 22...Nf6 23.Rd8 Qd8 24.Qd4 The mate threat is Qxd8 24...Qc7 (24...Qe7 25.Rd1 Nd5 26.a5+–) 25.Qd6 Qd6 26.Nd6 Nd5 27.Nc8 (27.a5 g5+–) 27...a6 28.ba6 Na6 29.Rb1 (29.Rb1 Kf8 30.Nb6+–) 1–0. BeepBeepImAJeep – Aues, lichess.org, 2016.

8.Be2 dc4 9.Bc4 Bd6 10.0-0 (10.d3 0-0=) 10...0-0 11.h3 (11.d3 a6=) 11...Qc7 (11...a6 12.ba6 Ba6 13.Na3=+) 12.Be2 Ne5 13.d4 cd4 Black gets strong initiative 14.Bd4 Black gets strong play along the open c–file. 14...Rad8 15.Ne5 (15.Nbd2 Nf3 16.Bf3 e5=+) 15...Be5=+ 16.Be5 Qe5 17.Qb3 Bd5 18.Qa3 Rc8 (18...Qg5 19.f3-/+) 19.Nd2=+ Rc2 20.Nf3 Qc7 21.Bd3?? (better 21.Rfc1=) 21...Rc3–+ 22.Qb2 (22.Rac1 Ra3 23.Rc7 Bf3 24.gf3 Rd3 25.Ra7–+) 22...Rd3 23.Ne5 Rc3 24.Nf3 (24.Rfc1 Rc8 (24...Qe5?! 25.Rc3 Ne4 26.Rc2–+) 25.Rc3 Qc3 26.Qc3 Rc3–+) 24...Bf3 25.gf3 Nd5 26.Rfd1 (26.Rfc1 Rc8 27.Rc3 Nc3–+) 26...Rc2 (26...Ne3!? 27.Rd7 Qc5 28.fe3–+) 27.Qe5 (27.Qb3–+) 27…Qe5 (27...Qe5 28.f4 Qf6–+) 0–1. RichardSommer (2075) – sisalspikes (2055), lichess.org, 2020.

8.Be2 Qc7 9.0-0 (9.cd5 ed5 10.a5 ba5=) 9...Bd6 10.h3 (10.cd5 Nd5 11.Na3 0-0=) 10...dc4 (10...0-0 11.cd5 Nd5 12.Nc3=) 11.Na3= Ne5 (11...e5 12.Nc4 0-0 13.Nh4=) 12.Ne5 Be5 13.Be5 Qe5 14.Nc4 Qc7 15.a5 0-0 16.Ra4 (16.Qc2 Bd5=) 16...Bd5 17.Qc2 Bc4 (17...Qb7 18.f3=) 18.Qc4 (18.Rc4 Qd7+=) 18...Qd6 19.d4 (19.Bf3 Rad8+=) 19...cd4 20.Qd4 White creates threats along the open c–file. 20...Qd4 21.Rd4 Rfd8 (21...e5 22.Rc4+=) 22.Rd8 (22.Rfd1 Rd4 23.Rd4 ba5+=) 22...Rd8 23.Rc1 Kf8 (23...ba5 24.Ra1 Rd7 25.Ra5+=) 24.Rc7 Rd7 (worse is 24...ba5 25.Ra7 Rd2 26.Bf3+/–) 25.Rc8 Ke7 26.ab6 ab6 27.Rb8 Nd5 (27...Rd2 28.Rb7 Nd7 29.Bf3+=) 28.Bf3+/– Kd6 29.Bd5 ed5 (29...Kd5 30.Rb6 Kc5 31.Rb8+/–) 30.Rb6 Kc5 31.Rb8 d4 (31...h6 32.Kf1+/–) 32.ed4+– Kd4 33.g4 Ke4 (33...Kc5 34.Kg2+/–) 34.Kg2+– Kf4 (34...h6 35.Rg8 f5 36.Re8 Kd5 37.Rb8+/–) 35.b6 Ke5 36.Ra8 (36.b7 Kf4+/–) 36...Ke6 (36...Kd6 37.Rh8+/–) 37.Rg8 (37.Ra7!? Rd8 38.Rc7 Rd2+–) 37...g6 (37...Kf6 38.Rh8+/–) 38.Re8 (38.Rb8 Kd6+/–) 38...Kd6 39.Re3 (39.Rh8 Rb7+/–) 39...Rb7 (39...Kc6 40.Rb3+=) 40.Rb3 (40.Rf3 h6+/–) 40...f6 (40...Kc6 41.Kf3+/–) 41.Kf3 Kd5 (41...Kc5 42.Ke4+/–) 42.Kf4 Kc4 43.Rb1 Kd5 (43...Kc5!?+/–) 44.h4+– White prepares the advance g5 44...Kc5 (44...Ke6 45.Ke4+–) 45.g5 fg5 46.hg5 (better is 46.Kg5 Kd6 47.h5 gh5 48.f4+–) 46...Kd5 47.Ke3 Re7 48.Kd3 Rb7 49.Rb2 Kc5 (49...Kc6 50.Kd4 Rd7 51.Ke5 Rd5 52.Ke6 Rd6 53.Kf7 Rd7 54.Kf6 Rd6 55.Kg7 Rd7 56.Kh6+–) 50.Ke4 Kd6 (50...Re7!? 51.Kf4 Kc6+/–) 51.Kd4+– Kd7 (51...Kc6 52.Ke5+–) 52.Kd5 (52.Kc5 Rb8+–) 52...Kc8 53.Kc6 Re7 54.Rd2 Re8 55.Rd7 (55.f4 Kb8+–) 55...Re6 56.Rd6 Re8 57.Rf6 (57.b7 Kb8+–) 57...Kb8 58.Rf7 (58.b7 Ka7 59.Rf7 Re2+–) 58...Re6 59.Kb5 Re2 60.f4 (60.Rh7!? Rb2 61.Kc5 Rc2 62.Kd6 Rb2+–) 60...Rh2 61.Kc6 Threatening mate... how? 61...Rc2 62.Kd6 (62.Kd7 Rh2 63.Ke6 Re2 64.Kf6 Rh2+–) 62...Rh2 (62...Rb2 63.Rh7 Rb6 64.Ke5+–) 63.Ke6 Rh4 64.Kd6?? (64.b7 Rh1+–) 64...Rh1?? (64...Rh2 65.Ke5 Re2 66.Kf6 Rh2+–) 65.Kc6 (65.Ke5 Re1 66.Kf6 Rh1+–) 65...Rc1 66.Kd7 Kb7 (66...Rh1 67.Ke8+–) 67.Rh7 Kb6 (67...Rb1 68.Ke6 Kb6 69.Rg7+–) 68.Rh6 Rc7 (68...Rd1 69.Ke6+–) 69.Ke8 Kc5 (69...Kb5 70.Rg6 Rc8 71.Kd7+–) 70.Rg6 Kd5 (70...Rc8 71.Kf7 Rc7 72.Kg8 Rc8 73.Kh7+–) 71.Rf6 Ra7 72.g6 Ra8 (72...Ke4 73.Kf8 Ra8 74.Kf7 Ra7 75.Kg8+–) 73.Kf7 Ra7 74.Kg8 Ra8 (74...Ra1 75.g7+–) 75.Kg7 (75.Kg7 Ra1 76.Rf8+–; 75.Kh7 Re8+–) 1–0. Alekseyev,Vadim (2440) – Ovod,Evgenija (2315), Petroff mem op, 2000.

8.Be2 Rc8 9.0-0 Be7 10.d4 (10.a5 dc4 11.Na3 a6 12.ba6 Ba6 13.ab6 Nb6 14.Nc4 Bc4 15.Bc4 0-0+=) 10...cd4 (10...dc4 11.Bc4 Bf3 12.gf3 cd4 13.Qd4=+) 11.Nd4 (11.Qd4!? dc4 12.Rc1=+) 11...dc4-/+ 12.Nc3 Nc5 (12...0-0 13.Rc1-/+) 13.Bf3 (better 13.Bc4!? 0-0 14.Qe2=) 13...Bf3 14.Qf3 0-0 (14...Nd3!? 15.Nc6 Qc7 16.Ne7 Qe7-/+) 15.Nc6 Qc7 16.Rad1 (16.a5 Bd6 17.ab6 ab6=) 16...a6 (16...Nd3 17.Ba1-/+) 17.Ba3 (17.Qf4 ab5 18.ab5 Nd3 19.Qc7 Rc7 20.Ne7 Re7=) 17...ab5 (17...Bd6!?=+) 18.ab5= Nd3?? (better 18...Rfe8=) 19.Ne7+– Qe7 (19...Kh8 20.Nc8 Rc8+–) 20.Be7 Rfe8 21.Bf6 gf6 22.Qf6 (22.Qf6 Rc7 23.Na4+–) 1–0. BeepBeepImAJeep (2565) – SegunOjuri (1830), lichess.org, 2017.

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

8.Be2 Bd6 9.0-0 Qc7 10.h3 (10.cd5 Nd5 11.Na3 0-0=) 10...0-0+= 11.Nc3 (11.cd5 Nd5 12.Nc3 Nc3 13.Bc3 a6=) 11...dc4 12.Bc4 Rad8 13.d3 Ba8 (13...Bf3 14.Qf3 Ne5 15.Qe2=) 14.e4= Ne5 15.Qe2 (15.Ne5 Be5 16.Qc2 Rd6=) 15...Nf3 (15...Rd7 16.Ne5 Be5 17.a5=) 16.Qf3 Be5 (16...Nd7 17.Rfd1=) 17.Ra2 (17.a5 Bh2 18.Kh1 Be5=) 17...Rd7 18.a5 Rfd8 19.Rfa1 Bb7 20.ab6 ab6 21.Ra7 Qb8 22.Qe2 (22.Qe3 Bd4 23.Qg5 Bc8=) 22...Ne8 (22...Bd4 23.Nd1=) 23.Qg4 (23.Nd1 Bb2 24.Nb2 Nd6=) 23...Bd4 (23...Nd6 24.R7a2+=) 24.Nd1= Qe5 (24...Bb2 25.Nb2 Bc8 26.Ra8=) 25.Bd4 Qd4 Increases the pressure on the backward pawn 26.R7a4 Qf6 27.f4 (27.Qh5 Nd6 28.e5 Qf5 29.Qf5 Nf5=) 27...e5 28.f5 (28.fe5 Qe5 29.Ne3 Nd6=) 28...Nd6 (28...Rd4 29.Ne3=) 29.Nf2 (29.Nc3 Qh6=) 29...g6 (29...Nc4 30.dc4 Rd4 31.Ra7=) 30.Qg3+= Nc4 31.Rc4 h5 (31...Qg7 32.fg6 hg6 33.Rca4=) 32.Rf1 g5 33.Qf3 Qh6 34.Ra1 Kf8 35.Qe2 Qh7 (35...Ke7 36.Rca4+=) 36.Ra3 (36.Rca4 Ke8+=) 36...f6 (36...Ke8 37.Rca4+=) 37.Nd1 (37.Rca4 Rd4+=) 37...Qf7 (37...g4 38.h4=) 38.Ne3+= Qe8 (38...g4 39.hg4 hg4 40.Ng4+/– (worse is 40.Qg4 Rd3 41.Rca4 R3d4+=)) ½–½. Peuraniemi,Pertti (2450) – Kiviaho,Allan (2145), Finland XII JSM/I div./C/1.board, 1993.

8.Be2 Bd6 9.0-0 e5 10.cd5 Nd5 11.d4 ed4 12.ed4 0-0 13.Nc3 (13.dc5 Nc5 14.Bc4 Nf4=+) 13...Nf4=+ 14.d5 Ne2 (14...Nf6 15.Bc4=+) 15.Qe2 Re8 16.Qc2 Ne5 17.Nd2 Qh4 18.g3 (18.a5 ba5 19.Ra5 a6=+) 18...Qh5 (18...Qd4 19.Rad1 Bd5 20.Nd5 Qd5=+) 19.Qd1 (19.f4 Ng4 20.Nc4 Be7-/+) 19...Qd1 (better 19...Ng4!? 20.Nf3 Be5-/+) 20.Rad1=+ Nd3 (20...Be7 21.f3=+) 21.Ba1= Nb4 Attacks the isolani on d5 22.Nc4 White gets kings attack 22...Be5 23.a5 (better 23.d6!? Bd4 24.Rd2=) 23...Bc3-/+ 24.Bc3 Nd5 (24...Bd5 25.Ne3 Bf3 26.Rd2-/+) 25.Bb2 Re2 (better 25...Rad8!?-/+) 26.a6= Bc8 27.Rd5 Threatening mate... how? 27...Be6 28.Rg5 Bc4 29.Rg7 Kf8 30.Bf6 Re6?? (better 30...Bd3 31.Rd1 Bg6= (31...Bb5?? 32.Rh7 Re1 33.Re1 Ba6 34.Rh8)) 31.Rh7+– Do you see the mate threat? 31...Rf6 32.Rh8 Ke7?! (32...Kg7 33.Ra8 Bf1 34.Kf1 Rf5+–) 33.Ra8 Bf1 (33...Bb5 34.Rb1 Bc6 35.Ra7 Kd6 36.Rd1 Ke5 37.Rb7+–) 34.Ra7 Kd6 35.Kf1 c4 (35...Rf3 36.Rb7 Ra3+–) 36.Rb7 (36.Rb7 Rf5 37.a7 Rb5 38.a8Q Rb1 39.Ke2+–) 1–0. BeepBeepImAJeep – Olexander_Klymenko (2325), lichess.org, 2016.

8.Be2 Bd6 9.0-0 Qe7 10.d4 (10.a5 ba5 11.cd5 ed5 12.Ra5 0-0=) 10...0-0 11.Nbd2 Rac8 12.Rc1 Rfd8 13.h3 Ba8 14.Qb3 (14.cd5 Bd5 15.Nc4 Bb8=+) 14...Bb8 (14...cd4 15.ed4 Nh5 16.Rfe1=+) 15.Ne5 (15.Qa3 Bb7=) 15...Ne5 (15...Bb7 16.f4=+) 16.de5 Nd7 17.f4 f6 18.ef6 Nf6 19.Bf3 e5 (better 19...dc4!? 20.Nc4 Bd5=) 20.cd5+– Nd5 (20...Kh8!? 21.fe5 Nd5+–) 21.e4+– c4? (21...ef4 22.ed5 Qf7 23.Nc4 Bd5 24.Bd5 Rd5 25.Rce1+–) 22.Rc4 (better 22.Nc4!? Qb4 23.Qb4 Nb4 24.Ne5 Be5 25.Be5 Nd3 26.Rc8 Rc8+–) 22...Rc4 23.Qc4 (better 23.Nc4 Nf4 24.Ne5 Qe6 25.Bd1 Be5 26.Be5+–) 23...Qc7?? (better 23...Qb4 24.Be5 Be5 25.fe5 Qd2 26.ed5 Bd5 27.Bd5 Qd5+–) 24.ed5 Qc4 (24...ef4 25.Rd1+–) 25.Nc4 ef4 26.d6 (26.Re1!? Kf8+–) 26...Bd6 (26...Bf3 27.Rf3 Bd6 28.Nd6 Rd6 29.Rf4 Rd1 30.Kh2+–) 27.Nd6 Bf3 28.Rf3 (28.Be5 Bd5+–) 28...Rd6 29.Rf4 Rd1 30.Rf1 Rd2 31.Rf2 Rd1 32.Kh2 h6 33.Rc2 Rd5 (33...Rd7+–) 34.Rc7 Rd3 (34...g5 35.Ra7 Rd6 36.Rg7 Kf8 37.Ba3 Kg7 38.Bd6+–) 35.Rg7 Kf8 36.Ra7 Rb3 (36...Ke8 37.Ra6 Rd6 38.Be5+–) 37.Bg7 Kg8 38.Bh6 (38.Bh6 Rd3 39.Bf4+–) 1–0. BeepBeepImAJeep (2465) – RafixuS (2395), lichess.org, 2015.

8.d4 Bd6 9.a4 (9.dc5 bc5 10.cd5 ed5=) 9...0-0+= 10.Ne2 (10.cd5!? Nd5 11.Bc4=) 10...cd4 11.Ned4 Bb4 12.Nd2 Ne4 13.N4f3 Ndc5 14.Bc1 Qf6 15.Rb1 Ba5 16.Qc2 Qg6 17.Nh4? (17.Rb2 dc4 18.Qc4 Bc3–+) 17...Qg4 (17...Nd2 18.Ng6 Nb1 19.Bd2 Bd2 (19...Nd2?! 20.Nf8 Rf8 21.cd5–+) 20.Ke2 fg6 21.Qb1 Ne4–+) 18.Nhf3 dc4 19.Qc4 Rac8 20.h3? (20.Ra1–+) 20...Qf5 21.Ra1 Bd5 22.Qe2 Nb3 23.Ba3 (23.Qd1 Rc1 24.Rc1 Bd2 25.Qd2 Ned2 26.Nd4 Nd4 27.ed4–+) 23...Ned2 24.Nd2 Nd2 (24...Nd2 25.Bb4 Bb4–+) 0–1. Valica,Slavo – Nemec,Zdenek, b2–b4.com, 2004.

8.Be2 Bd6 9.0-0 Qc7 10.g3 a5 11.ba6 Ba6 12.cd5 ed5 13.Nb5 Bb5 14.Bb5 0-0 15.a4 Ne5 16.Ne5 Be5 17.d4 cd4 18.Rc1 Qd8 19.Qd3 Rc8 20.Rc8 Qc8 21.Rc1 Qh3 22.Qf1 (worse is 22.Bd4 Ng4 23.Rc2 Qh2 24.Kf1 Qh1 25.Ke2 Nh2-/+) 22...Qg4 23.Rc6 Qe4 24.Qd3 de3 25.Qe4 ef2 26.Kg2 de4 27.Be5 e3? (27...Nd5 28.Kf2 Rd8 29.Bd4+–) 28.Bd4 (28.Bf6!? gf6 29.Rc3 Rd8+–) 28...Ng4 (28...Nd5+–) 29.h3 (29.h3 Nf6 30.Be3 f1Q 31.Kf1+–; 29.Rb6?! Rd8 30.h3 h6+–) 1–0. Rooijen Van,Peter (1675) – Gudok,Viktor (1805), 65. LSS No Engine Cup Preliminary, 2012.

8.a4 cd4 9.Bd4 dc4 (9...Bb4 10.Nbd2+=) 10.Bc4 Bb4 (10...Bf3 11.gf3 Bb4 12.Nd2+=) 11.Nbd2 (11.Nfd2 0-0 12.0-0 Rc8=) 11...Bf3+= 12.Qf3? (better is 12.gf3 Rc8 13.Rc1+=) 12...Bd2–+ 13.Kd2 Ne5 14.Qe2 Nc4 15.Qc4 e5 16.Qc6 Kf8 (16...Ke7 17.Qb7 Ke8 18.Rhd1–+) 17.Rac1 (better is 17.Ke2 ed4 18.Rhd1–+) 17...ed4 18.Rhd1 g6 (better is 18...Qb8!?–+) 19.Ke2 Kg7 20.Rd4 Qe7 (20...Qe7 21.Qd6 Qd6 22.Rd6 Rad8–+) 0–1. Suess,Stefan – Kampen,Hans, corr, 1985.

8.dc5 Nc5 Black fights for the Initiative 9.cd5 Qd5 10.Bd4 Nce4 11.Bd3 (11.a3!?=) 11...e5 12.Be4? (better is 12.Be5 Bb4 13.Kf1 Nf2 14.Kf2 Ng4 15.Kg3 Ne5 16.Bc2-/+) 12...Ne4–+ (worse is 12...Qe4 13.Be5 Qg6 14.0-0+=) 13.Ne5 (13.Nc3 Bb4 14.Be5 Nc3 15.Qd5 Bd5–+) 13...Nf2! (13...Qb5 14.a3 Bd6 15.Qh5–+) 14.e4 (14.Kf2 Decoy theme: f2 14...Qg2) 14...Ne4 (better is 14...Qe4 15.Kf2 Qg2 16.Ke3 Qe4 17.Kf2 Qh1 18.Qh1 Bh1 19.Nc3–+) 15.0-0? (15.Qa4–+) 15...Bc5 (15...Qb5?! 16.Nf7 Rg8 17.Nc3 Nc3 18.Bc3+=) 16.Nc6 (16.Nf3 Rd8–+) 16...Bc6 17.Bc5 Qc5 (17...bc5?! 18.bc6 Qc6 19.Qf3–+; 17...Nc5?! 18.bc6 Qc6 19.Re1 Ne6 20.Nd2–+) 18.Kh1 Rd8 19.Qf3 (19.Qe1 Qb5 20.Nc3–+) 19...Nf2! 20.Rf2 (20.Qf2 Qf2) 20...Bf3 Annihilates a defender: f3 (20...Bf3 21.Nd2 Qf2 22.Nf3 Kf8–+) 0–1. Valica,Slavo – Nemec,Zdenek, b2–b4.com, 2004.

8.Nbd2 a6 9.a4 cd4 10.Bd4 Bb4 (10...Bc5 11.cd5 Bd4 12.Nd4 Bd5 13.Rc1=) 11.cd5 (11.ba6 Ba6 12.cd5 Bf1 13.Kf1 ed5 14.h4=) 11...e5 (11...Bd5 12.Rb1 Qe7 13.ba6=) 12.ba6 (12.Ne5 Ne5 13.ba6 Bd2 14.Qd2+=) 12...Bd5= 13.Bb2 (worse is 13.Ne5 Ne5 14.Be5 Ne4 15.Bb5 Kf8-/+) 13...Nc5 (better is 13...Ne4!?=) 14.Bb5+/– (14.Ne5 0-0 15.Nef3 Bf3 16.gf3 Nb3 17.Bf6 Qf6–+ (17...Qd2 18.Qd2 Bd2 19.Ke2 Na1 20.Ba1=)) 14...Kf8 15.0-0 Qe7 (15...e4 16.Nd4+/–) 16.Qe2 (16.Ne5 Kg8+–) 16...h5? (better is 16...Bd2!? 17.Nd2 Nfe4+/–) 17.Be5+– Ng4 18.Nc4 With the decisive threat Bd6 18...Qe6 (18...Ne5 19.Nce5 Bc3 20.Rad1+–) 19.Nd4 Qg6 20.Bd6 Kg8 21.f3 (21.h3 Ne5 22.f4 Nc4 23.Bc5 bc5 24.Bc4 Bc4 25.Qc4 Qe4+=) 21...Bc4 22.Bc4 (22.Qc4 Ne3 23.Qe2 Nf1–+) 22...Ne3 23.Bc5 Bc5?? (better is 23...bc5 24.Qe3 cd4 25.Qd4 Bd6+–) 24.Qe3 Rd8 25.Rad1 (better is 25.a7 Bd4 26.Qd4 Rd4 27.a8Q Kh7+–) 25...Qf6? (25...Qd6 26.Bf7 Kf7=) 26.Qe4 (better is 26.a7 Ra8 27.Rfe1+–) 26...Rd4 (26...Bd4 27.Kh1 h4 28.a7+–) 27.Rd4+/– Bd4 28.Kh1 White threatens strongly a7 28...b5? (better is 28...Be5+/–) 29.a7! Threatening mate... how? 29...g5 (29...Ba7 30.Qa8 A double attack) 30.Qb7 (better is 30.a8Q!? Kg7 31.Qad5 bc4 32.Qed4 Qd4 33.Qd4 f6+–) 30...Qf4?? (better is 30...Ba7 31.Bd5 Bd4 32.ab5 Kg7+/–) 31.g3 Qe3 (31...Qf6 32.a8Q Kg7+–) 32.Qf7 1–0. Gorzel – Micheel, corr SOK–89–34, 1989.

8.Nbd2 cd4 9.Bd4 Bc5 10.Bb2 0-0 11.Be2 dc4 12.Nc4 Bb4 13.Ncd2 Ne4 (13...Bf3 14.gf3 Nc5 15.Rc1=+) 14.0-0= Nd2 15.Nd2 Qg5 16.Nf3 Bf3 17.Bf3 Rad8 18.Qb3 (18.Qa4 Ba5+=) 18...Be7 (18...Qb5? 19.a3 a5 20.ab4 Qb4 21.Qb4 ab4 22.Bd4+-) 19.Rac1 (19.Qa4 Ne5 20.Be4 Nd3+=) 19...Nc5= 20.Qa3 (better 20.Qc4=) 20...Bf6?? (better 20...Nd3 21.Qb3 Nc1 22.Rc1 Rc8-/+) 21.Bf6+/- Qf6 22.Qa7 e5 23.Bc6 Rd2 24.Qb6 Nd3 25.e4?? (better 25.Qa5 Rf2 26.Be4 Nc1 27.Rf2+-) 25...Nc1=+ 26.Rc1 Rfd8 27.h3 Ra2 28.Qe3 h6 (28...Rb2!?-/+) 29.Bd5= Rb2 30.Bc6 (30.Rc7!? Rf8 31.Bc4=) 30...Rdd2 31.Rf1 Qd6 (31...Re2 32.Qg3-/+) 32.Qg3 Qf6 33.Qe3 Qf4 34.Qf4 ef4 35.e5 Re2 36.Rd1 Re5 (worse 36...Rf2 37.b6 Rfd2 38.Rd2 Rd2 39.b7-/+) 37.Rd8 Kh7 38.h4 g5 (38...Rh5 39.g3 fg3 40.fg3-+) 39.hg5 (39.Kh2 g4 40.Rd4 Rf2-+) 39...hg5 40.g3?? (better 40.Re8 Re8 41.Be8-+) 40...fg3 41.Kg2 (41.Re8 Rc5 42.Kg2 gf2 43.Be4 f5 44.Re7 Kg6 45.Re6 Kh5 46.Bd3-+) 41...gf2 42.Kf1 Re1 43.Kg2 f1Q 44.Kg3 Re3 (44...Qf4 45.Kh3 Rh2) 45.Kg4 Qf4 (45...Qf4 46.Kh5 Rh2) 0-1. zembelek (2095) - ENERGIE73 (2335), Rated Blitz game, lichess.org, 2013.

8.Nbd2 Ne4 9.cd5 Bd5 10.Ne4 Be4 11.Be2 Nf6 12.0-0 Be7 13.a4 (13.Rc1 0-0+=) 13...0-0 14.Qb3 (14.dc5 Bc5 15.Qd8 Rfd8=) 14...Bd5 15.Qc2 (15.Bc4 Bf3 16.gf3 cd4 17.Bd4 Bc5=) 15...Ne4 (15...Rc8 16.dc5 Rc5 17.Qd1=) 16.Ne5 Qc7 (16...Rc8 17.Rac1 Bd6=) 17.Nc6 (better 17.Bd3!? Nf6 18.e4+=) 17...Bc6 18.bc6 Qc6 19.Bc4 (19.Bb5 Qb7=) 19...Nd6 (19...cd4 20.Bd4 Bf6 21.Rfd1-/+) 20.Be2 (20.Bd3 f5=+) 20...Rac8 21.Bf3 Qd7 22.d5 e5 (better 22...ed5!? 23.Bd5 Rfd8=+) 23.Be5+= Rfe8 24.e4 (24.Rfd1 Bh4 25.Bc3 Qe7+=) 24...f6 (24...Bg5!? 25.Bc3 Bf4=) 25.Bf4+= g5 26.Bg3 Nf7 (26...f5 27.ef5 Qf5+= (27...Nf5? 28.Bg4 Ne3 29.Bd7 Nc2 30.Rac1+-)) 27.h3 Ne5 (better 27...f5!? 28.e5 Nh6+-) 28.Be5 fe5 29.Bg4 Qd6 30.Be6 Kh8 31.Bc8 Rc8 32.Qc4 Rg8 33.Ra3 h5 (33...g4 34.Rd1+-) 34.a5 (34.Qa6 Qd7+-) 34...Bd8 (34...g4 35.ab6 ab6 36.Rfa1+-) 35.ab6 Bb6 36.Rf3 g4 37.hg4 (37.Rf5 gh3 38.Rh5 Kg7+-) 37...hg4 (37...Rg4 38.Qa4 Qg6 39.Qd7+-) 38.Rf5 Rg6 (38...Rf8 39.Rg5+-) 39.Rh5 (39.Qc3 Kh7+-) 39...Kg7 (39...Rh6 40.Rg5+-) 40.Ra1 (40.Qc3 c4 41.Qg3 c3+-) 40...Qf6 (40...Rh6 41.Rf5+-) 41.Rf5 (41.Qa6 Rg5 42.Qb7 Kf8 43.Qc8 Kg7 44.Qd7 Kf8+-) 41...Qh4 Black prepares the advance g3 (41...Qd6 42.Rd1+-) 42.d6 (42.Qc3 Qe7 43.Re5 Qf6+-) 42...Rf6 43.d7 (43.Re5?? Qf2 44.Kh2 Rh6 45.Rh5 Rh5) 43...g3 (43...Rf5 44.ef5 Qg5+-) 44.d8Q (better 44.fg3 Qh6 45.Ra7 Qe3 46.Kf1+-) 44...gf2 (44...Bd8?? 45.fg3 Qg3 46.Ra7 Kh6 47.Qc1 Kg6 48.Rd7+-) 45.Kf1 Bd8 46.Ra7 Kh6 47.Rf6 Bf6 48.Ra6 Qh1 49.Kf2 Qh4 50.Kg1 Qe1 51.Qf1 Qe3?? (51...Qf1 52.Kf1 Kg7+-) 52.Kh2 (52.Kh2 Qf4 53.Qf4 ef4 54.Rf6 Kg5 55.e5+-) 1-0. wgr069 (2325) - Vika88 (1980), Casual Rapid game, lichess.org, 2021.

8.Bd3 Be7 9.0-0 0-0 10.Nbd2 Rc8 11.Rc1 Ne4 12.Qc2 Nd2? 13.Nd2 Bf6 14.Bh7+/– Kh8 15.Bd3 cd4 16.ed4 dc4 17.Nc4 e5? 18.Qe2+– Bg5 19.Qh5 Bh6 20.Nd6 Nf6 21.Rc8 Bc8 22.Nf7 Rf7 23.Qf7 e4 24.Bc4 e3 25.fe3 Be3 26.Kh1 Bg4 27.Qa7 Bd4 28.Bd4 Qd4 29.Qb8 Kh7 30.Qf4 (30.Qf4 Qf4 31.Rf4+–) 1–0. kofti – tossubanaani, ChessWorld.net, 2005.

8.Be2 dc4 9.Bc4 cd4 10.Qd4 Bf3 11.gf3=.

8.Be2 dc4 9.Bc4 Be7 10.0-0 0-0 11.Nbd2 Rc8 12.Rc1 Rc7 13.Be2 Qa8 14.Nb3 Rfc8 15.Ba3 Bf8 16.dc5 Nc5 17.Ne1 Rd7 18.Nd2 Nce4 19.Rc8 Qc8 20.Bc1 Nc3 0–1. Moura – Baena de Moraes, Campinas 1985.

8.Be2 cd4 9.Qd4 Bb4 (9...Bc5 10.Qf4=) 10.Nbd2 dc4 (10...Bc5 11.Qf4=) 11.0-0 0-0 (11...Bc5 12.Qc4 a6 13.Qh4+=) 12.Nc4 Be7 (12...Bc5 13.Qh4=) 13.Rfd1+= Rc8 (13...a6 14.ba6 Ba6 15.Nfe5 Ne5 16.Qe5=) 14.Nce5 (14.Nd6 Bd6 15.Qd6 Bd5+=) 14...Ne5 (14...Nc5 15.Qd8 Bd8 16.Nd4+=) 15.Qe5 Qc7 16.Rac1 Qe5 17.Ne5 Nd5 18.Nc6 (18.Bf3+=) 18...Rfe8 (better is 18...Bc5!?+=) 19.e4 (19.Na7?! Rc1 20.Bc1 Ra8=) 19...Nf6?? (better is 19...Bg5 20.ed5 Bc1 21.Rc1 ed5+/–) 20.Ne7+– Re7 21.Rc8 Bc8 22.Rd8 Re8 23.Bf6 Rd8 24.Bd8 1–0. DEFFM – GuestPHTZ, freechess.org, 2018.

9.a4 h6 (9...cd4 10.Nd4 Bb4 11.Ba3 Ba3 12.Ra3 0-0 13.Be2 e5 14.Nc6 Qc7 15.Ne7 Kh8 16.Nd5; 9...0-0 10.cd5 cd4 11.Nd4 Nd5 12.Nc6 Bc6 13.bc6 Ne5 14.Rc1 Qc7 15.Be5 Be5 16.Qb3) 10.Qc2 (10.cd5 ed5 11.h3 (11.Be2 c4 12.0-0 0-0 13.Qc2 Re8 14.h3 Qc7 15.Nh4 g6 16.Ba3) 11...0-0 12.Be2 c4 13.0-0 Qc7 14.Qc2 a6 15.Nh4 Bb4 16.Bc3; 10.Be2 cd4 11.ed4 Ne4 12.0-0 0-0 13.cd5 ed5 14.Ne5 Re8 15.Ne4 de4 16.f4) 10...Bc7 (10...cd4 11.Nd4 Rc8 (11...Ne5 12.Be2 0-0 13.0-0 Rc8 14.f4 Nc4 15.Bc4 Bb4 16.N4f3) 12.a5+= (12.Be2 0-0 13.0-0 Ne5 14.f4 Nc4 15.Bc4 dc4 16.Nc4) 12...0-0 13.Be2 Qc7 14.a6 Ba8 15.Rc1 dc4 16.Nc4; 10...Rc8 11.Be2 cd4 12.Bd4 e5 13.Bb2 0-0 14.0-0 Qc7 15.Nh4 e4 16.h3; 10...0-0 11.Be2 cd4 12.Nd4 Rc8 13.0-0 dc4 14.Nc6 Bc6 15.bc6 Rc6 16.Nc4) 11.Bd3 (11.a5 dc4 12.ab6 Bb6 13.Bc4 cd4 14.Nd4 0-0 15.0-0 Rc8 16.Rfc1) 11...Qe7 (11...cd4 12.Nd4 (12.Bd4? e5–+; 12.ed4 dc4 13.Nc4 0-0 14.Qe2 Nd5 15.g3 Nb4 16.Bb1) 12...Nc5 (12...Ne5 13.0-0 Nd3 14.Qd3 dc4 15.Qc4 e5 16.Nf5) 13.0-0= (13.Nc6 Qd7 14.Bf6 gf6 15.cd5 Nd3 16.Qd3) 13...Nd3 14.Qd3 dc4 15.Qc4 Rc8 16.Qe2) 12.Nb3 (12.0-0 dc4 (12...0-0 13.Rfe1 cd4 14.ed4 Rac8 15.Ba3 Bd6 16.Bd6) 13.Bc4 (13.Nc4 0-0 14.e4 cd4 15.Nd4 Qc5 16.g3) 13...0-0+= 14.h3 Rfd8 15.Rfd1 Rac8 16.Rac1) 12...e5 (12...0-0 13.dc5 dc4 14.Bc4 Nc5 15.Nc5 bc5 16.0-0) 13.de5 (13.dc5 bc5 14.Nh4 dc4 15.Bc4 Be4 16.Bd3) 13...Ne5 14.Nbd2 (14.Ne5 Be5 15.Be5 Qe5 16.0-0) 14...Nd3 (14...d4 15.Ne5 Be5 16.e4) 15.Qd3 0-0 16.0-0 Rfd8 17.cd5 Rd5 18.Qc2 Rad8 19.Nc4 Rh5 20.Rad1 (20.Ncd2!?+=) 20...Bf3-/+ 21.gf3 Rh2 22.Rd8 Qd8 23.Rd1 Qe7 24.Qf5 Ne8 (better is 24...Rh4!? 25.e4 Qe6 26.Qe6 fe6 27.Bf6 gf6+/–) 25.Rd7+/– Qh4 26.Qf7 Kh7 27.Qf5 Kg8 28.Qe6 Kh7 29.Qe4 Kg8?? (better is 29...Qe4 30.fe4 Rh4+–) 30.Qe8 Kh7 31.Rg7 1–0. Rygin,Ivan – Tevrizova,Anastasiya, Kineshma RUS, Open, 2011.

9.Bd3 0-0 10.Qc2 (10.cd5 ed5 11.dc5 bc5=) 10...Rc8 (10...cd4 11.Nd4 dc4 12.Nc4 Bb4 13.Ke2+=) 11.0-0= cd4 12.ed4 (12.Nd4 Qc7 13.f4 Rfd8=) 12...Qc7 (12...dc4!? 13.Bc4 Bf3 14.Nf3 Qc7-/+) 13.Rac1+= Qb8 14.Qb1 (14.Qa4 dc4 15.Rc4 Bd5+=) 14...Bf4= 15.Rc3 (15.Ba3 dc4 16.Bf8 Bf3 17.Rc4 Bh2 (worse is 17...Bd2 18.Bd6 Qb7 19.Rc8 Qc8 20.gf3+/–) 18.Kh1 Bg2 19.Kg2 Rc4 (worse is 19...Rf8 20.Rh1+/–) 20.Bc4 Kf8+=) 15...dc4-/+ 16.Rc4 (16.Bc4 Rfd8-/+) 16...Bd5 (16...Rc4 17.Bc4 Qa8 18.Rd1-/+) 17.Rc8+= Rc8 18.Ne4 Ne4 19.Be4 Be4 (19...Qa8 20.Re1 Nf6 21.Bd5 Qd5 22.Ba3+=) 20.Qe4 Nf6 21.Qe2 Qc7 22.g3 (22.Re1 Qc2+=) 22...Qc2 23.Re1 (23.Qc2 Rc2 24.gf4 Rb2-/+) 23...Qe2 (23...Bd6 24.Ne5+=) 24.Re2 Bh6 (24...Bd6 25.Kg2+=) 25.Ne5= g6 (25...Nd5 26.Ba3=) 26.Nc6 Nd5 27.Rc2 (worse is 27.Na7 Ra8 28.Nc6 Ra2-/+) 27...Ra8 28.Rc4 (28.Ba3 Bg7=) 28...a6 29.Ra4 a5 (29...Nc7 30.ba6 b5 31.Ra3+=) 30.Rc4= f6 (30...a4 31.Ba3=) 31.a4 (31.Ba3 Kf7=) 31...Bf8 (31...Bd2 32.Bc1 Bb4 A) worse is 33.Nb4 ab4 (33...Nb4?! 34.Bh6=) 34.Kg2 Ra4–+; B) 33.g4=) 32.Kf1 (32.Bc1 h5=) 32...Kf7 (32...Bb4 A) worse is 33.Nb4 ab4 (33...Nb4?! 34.Ba3=) 34.Ke2 Ra4–+; B) 33.h3=) 33.Ke2 Ke8 (33...Bb4 34.h4= (worse is 34.Nb4 ab4 35.Kd3 Ra4–+)) 34.Kd3 (34.h4 h5=) 34...Kd7 35.Bc3 (35.h3 Bd6=) 35...Bd6 (35...Rc8 36.h3=) 36.Bd2 g5 37.h3 h5 38.Rc1 Rh8 Black plans h4 39.Ke4 h4 40.g4 Rc8 41.Rc2 (41.Be3!?=) 41...Ne7-/+ 42.Kd3 (42.f4 A) worse is 42...Nc6 A1) worse is 43.Rc6 Bf4 (worse is 43...Rc6 44.bc6 Kc6 45.fg5 fg5 46.Bg5+/–) 44.Bf4 gf4 45.Rb6 Rc4=; A2) 43.bc6 Rc6 44.Rc6 Kc6 45.fg5 fg5 46.Bg5+/–; B) 42...Bf4 43.Bf4 gf4-/+) 42...Nc6 43.Rc6 Rc6 44.bc6 Kc6 45.Kc4 Bf4 (45...f5 46.f3 f4 47.Bc1-/+) 46.Bc3 Bc1 47.f3 Bf4 ½–½. Osaulenko,A – Kopec,Mariusz, corr, 1990.

9.Bd3 cd4 10.ed4 (10.Bd4? e5–+) 10...dc4 11.Nc4 Bb4 12.Nfd2+=.

9.Be2 0-0 10.0-0 Qc7=.

9.Be2 0-0 10.0-0 Rc8 11.Rc1 Bb8 12.a4 Ne4 13.cd5 Nd2 14.Nd2 Bd5 15.e4 Bb7 16.Bf3 (16.f4 Qh4 17.g3 Qh6=) 16...Qh4 (16...Bf4 17.g3 Bd2 18.Qd2=) 17.e5 Bf3 18.Nf3 Qh5 19.d5 Ne5?? (better 19...ed5 20.Qd5 Rcd8=) 20.Ne5+- Qf5 (20...Qd1 21.Rfd1 Be5 22.Be5 ed5 23.Rd5+-) 21.Nc6 Bf4 (21...Bd6 22.de6 Qe6+-) 22.Ne7 (22.Ne7 Kh8 23.Nf5 ef5 24.Rc4+-) 1-0. wgr069 (2310) - scu67 (1975), Rated Blitz game, lichess.org, 2021.

9.Be2 0-0 10.a4 Re8 (10...cd4 11.Bd4 e5 12.Bc3+=) 11.0-0 (11.cd5 ed5 12.dc5 bc5=) 11...e5 (11...cd4 12.Nd4 Rc8 13.Rc1=) 12.de5 Ne5 13.Ne5 Be5 14.Be5 Re5 15.Nf3 (15.a5 a6 16.ba6 Ra6=) 15...Re6 16.Qc2 (16.cd5 Bd5 17.Qc2 Qe8=) 16...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 Threatening mate... how? 25...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–+ 30.Kh2 Qa4 31.Qe5 (31.Qe2 a6 32.Qd2 Qb5–+ (32...ab5?! 33.Qd8 Kh7 34.Ne5-/+)) 31...Qb5 32.Qb8 Kh7 33.Qa7 f6 34.Qd7?? (better is 34.Qe7 Qc4 35.Nd2–+) 34...Nd3 (better is 34...Qd7 35.h4–+) 35.Nh4 (35.Qb5 Nf2 36.Qb1 Kh8+–) 35...Ne5 (better is 35...Qd7 36.Nf3 Nf2–+) 36.Qe6 (better is 36.Qb5 c4 37.f4+–) 36...Qc6–+ 37.Qf5 (37.Qa2 Qe4 38.Kg3 c4–+) 37...g6 38.Qc2 (38.Qb1 c4–+) 38...f5 (better is 38...c4!?–+) 39.f4-/+ Nd7 (39...Nf7 40.g4 fg4 41.hg4-/+) 40.Qc4 (40.g4!? fg4 41.hg4-/+) 40...Kg7–+ 41.Nf3 b5 (41...Kf8 42.Qc3 Qf6 43.Qf6 Nf6 44.Ne5–+) 42.Qc3 Kh7 43.Qd3 (43.Nd4 b4 44.Qb3 Qf6-/+ (44...cd4?! 45.Qf7 Kh8 46.Qe8 Kg7 47.Qe7 Kg8 48.Qe8 Kg7 49.Qe7 Kg8 50.Qe8 Kg7=)) 43...c4 (43...b4 44.Qb3 Kg7 45.Kg1–+) 44.Qc3 (44.Qa3 Qc5 45.Qa8 Qc7-/+) 44...Qd5 (44...Qc5 45.Qd2 Nf8 46.Qc3–+) 45.Qb4 (better is 45.Nd4!?-/+) 45...Qc5–+ 46.Qd2 Nf6 (better is 46...Nf8–+) 47.Nd4? (better is 47.Qd8 Kg7 48.Nd4–+) 47...b4 Black prepares c3 48.Ne6 (48.Qa2 Nd5 49.Qa8 b3–+) 48...Qe7 (48...Qb6 49.Nd4–+) 49.Nd4 Ne4 50.Qc2 (50.Qe2 c3–+) 50...c3 (50...Qf7 51.Qb2 b3 52.Kg1–+) 51.Nc6 Qb7 52.Na5 (52.Qb3 c2! (52...Qc6?! 53.Qf7 Kh8 54.Qf8 Kh7 55.Qf7 Kh8 56.Qf8 Kh7 57.Qf7=) 53.Qc2 b3–+) 52...Qc7 (52...Qd5 53.Qa4 c2 54.Nb3–+) 53.Nb3 g5 54.g3 gf4 55.ef4 Qb6 (55...Qg7!? 56.Qg2–+) 56.Kg2 (56.Qe2–+) 56...Qe3 (56...Qe3 57.g4 Qg3 58.Kf1 Qh3 59.Ke2 Qg4 60.Kd3 Qf4–+) 0–1. Nicklich,Wolfgang – Olsson,Sture, corr, 1978.

9.Be2 cd4 10.Nd4 0-0=.

9.Be2 Rc8 10.Ne5 (10.0-0 0-0=) 10...Bb8 (10...cd4 11.ed4 dc4 12.Nec4+=) 11.f4 (11.Nd7 Qd7 12.dc5 bc5 13.Bf6 gf6 14.cd5 Rg8=) 11...dc4 (11...cd4 12.ed4 dc4 13.Bc4+=) 12.Ndc4 (12.Nec4 0-0 13.0-0 cd4 14.Bd4 Qe7=) 12...Nd5 (12...cd4 13.Bd4 Ne5 14.Be5 Be5 15.Qd8 Rd8 16.Ne5=) 13.a4 (13.Nd7 Qd7 14.dc5 bc5+=) 13...N7f6 (13...cd4!? 14.Qd4 Ne5 15.Ne5 f6=) 14.0-0 (14.dc5 bc5 15.0-0 0-0+=) 14...Ne4 (14...0-0 15.dc5 bc5 16.Rc1+=) 15.dc5 (15.Bf3 Nd6+=) 15...Rc5 (15...Nc5 16.a5+=) 16.Ba3 (16.Qd4 Be5 17.Ne5 Nd6+/–) 16...Nec3 (16...Rc8 17.Bd3 Nc5 18.Bc5 Rc5 19.Qg4=) 17.Qc2+= White gets strong initiative 17...Ne2 (17...Rc8 18.Rac1+=) 18.Qe2 Nc3? (better is 18...Rc8!?+=) 19.Qg4+– Rc4 (19...0-0 20.Bc5 bc5 21.Rf2+–) 20.Nc4 Rg8 (20...Qf6 21.Bb2 h5 22.Qh3+–) 21.Bb4 (21.Rac1 Ne4+–) 21...h5 (21...Ne4 22.Rad1 Qf6 23.Bd6+–) 22.Qh5 Qd3? (22...Qd5 23.Qd5 ed5 24.Nd2+–) 23.Bc3 (better is 23.Ne5!? Qe3 24.Rf2 Ne2 25.Qe2 Qd4+–) 23...Qc3 24.Rac1 Qd3 25.Rf2 g6 (25...Qe4 26.Rd2+–) 26.Qg5 Qe4 27.Rd1 (27.a5!? Qd5+–) 27...Bd5 28.Qf6 (better is 28.Rd4 Qf5 29.Qf5 gf5 30.Rc2+–) 28...Qc4+= 29.Qd4 (29.Qa1 Qb3 30.Rc1 Ke7+=) 29...Qd4 30.Rd4 Ke7 (30...Bd6 31.Rfd2 Bc5 32.R4d3-/+) 31.e4 Bb7 (31...Ba8 32.e5+=) 32.Rfd2 Bf4 (32...Bc8!? 33.e5 g5+=) 33.Rd7+= Kf8? (better is 33...Kf6 34.Rf2 Ke5 35.Rb7 Be3+=) 34.Rd8?? (better is 34.Rf2 Bc8 35.Rd8 Kg7 36.Rg8 Kg8 37.Rf4+–) 34...Kg7–+ 35.Rg8 Kg8 36.Rd8 (36.Rd7 Be4 37.g3 Be3 38.Kf1 Bc5–+) 36...Kg7 37.Rd7 Be4 38.Ra7 Bd3 (38...Bb8 39.Rd7–+) 39.Kf2 Bd6 40.Ke3 Bf1 41.Kf2 (41.Kf3 Bc4 (41...Bh2?! 42.Kf2 Bd3 43.g3-/+) 42.h4 Bd5 43.Kf2 Bc5 44.Kg3 Bb4–+) 41...Bc4 42.g3 (42.h4 e5–+) 42...e5 (42...Bc5 43.Kf3–+) 43.Ke3 (43.Kf3 Kf6–+) 43...Kf6 44.Ra6 (44.Ra8 Ke6–+) 44...Bc5 45.Ke4 (45.Kf3 Bd3 46.Kg4 Be2 47.Kh3 e4–+) 45...Ke6 46.g4 (46.Kf3 Bd5 47.Kg4 Bg2–+) 46...Be2 (46...f5 47.gf5 gf5 48.Kf3 e4 49.Kg3 e3–+) 47.h3 (47.g5 Bc4 48.Kf3–+) 47...f5 (47...f5 48.gf5 gf5) 0–1. Wessel,V – Mueller,A, Landes–Einzelmeister, 1991.

9.a4 0-0 10.cd5 cd4 11.de6 de3 12.ed7 ed2 13.Qd2 Qd7 14.Qd7 Nd7 15.0-0-0 Rac8 16.Kb1.

9.a4 0-0 10.Be2 Rc8 11.0-0 Ne4 (11...cd4 12.Nd4 Qc7 13.a5=) 12.cd5 (12.Ne4 de4 13.Ne5 Bd6=) 12...ed5 13.dc5 Ndc5 14.Nb3 Qd7 (14...f5 15.Nbd4=) 15.Nbd4 Bf6 16.Qb1 Rfd8 17.Rd1 h6 (17...a5 18.ba6 Ba6 19.Bb5 Bb5 20.ab5+=) 18.Qa2 (18.a5 Re8+=) 18...g5 (18...a5 19.ba6 Ba6 20.Bb5+=) 19.Rac1 g4 20.Ne1 (20.Nd2 Bh4 21.Ne4 Ne4+=) 20...h5 (20...Bh4 21.g3 Bf6+=) 21.Qb1 (better 21.Nd3+/-) 21...Na4=+ 22.Qa2? (better 22.Qa1 Nb2 23.Qb2=+) 22...Nac5?? (better 22...Nec3 23.Bc3 Nc3-+) 23.Qa7?? (23.f3 gf3 24.Bf3 a6=+) 23...Bd4?? (better 23...Ra8 24.Qb6 Na4 25.Qd8 Rd8-+) 24.Bd4+/- (24.ed4? Ra8 25.Qa8 Ra8 26.dc5 bc5-+; worse 24.Rd4 Qf5 25.f3 Qe6=+) 24...Nb3 (24...Qf5!? 25.f3 Qe6+=) 25.Rc8 Rc8 26.Qb6 Nd4 27.Qd4 (27.Rd4 Rc1 28.Kf1 Qf5+/-) 27...f5?? (27...Nc3 28.Qd3 Nd1 29.Qd1=) 28.Nd3 (28.Qb6 Qg7+-) 28...Qd6? (28...Nc3 29.Rd2 Ne2 30.Re2 Qb5+/-) 29.Nf4 (better 29.Qa7 Nc3 30.Qb7+-) 29...Rd8? (better 29...Nc3 30.Rd3 Qf4 31.Rc3 Qd4 32.Rc8 Bc8 33.ed4 Kf7+-) 30.Nh5 Bc8 (30...Qh6 31.Nf4+-) 31.Nf4 (31.Qg7) 31...Kf7 (31...Bb7 32.Bc4!+-) 32.Rc1 1-0. ClayPigeons (2195) - fr77127 (2290), Rated Bullet game, lichess.org, 2020.

9.a4 a6 10.Be2 (10.cd5 ed5 11.Ne5 Qc7 12.Qc2 0-0 13.ba6 Ba6 14.Ba6 Ra6 15.0-0 Bd6 16.Nd7; 10.ba6 Ba6 11.cd5 ed5 12.Ba6 Ra6 13.0-0 0-0 14.Qc2 Re8 15.Rfe1 Qc8 16.e4) 10...ab5 11.ab5 (11.cd5 Bd5 12.Bb5 0-0 13.0-0 Qc7 14.Qe2 Rfc8 15.e4 Bc6 16.Rfc1) 11...0-0 (11...Ra1 12.Qa1 0-0 13.0-0 Qc7 14.Rc1 Ra8 15.Qb1 Bd6 16.h3) 12.0-0 (12.Ra8 Qa8 13.0-0 cd4 14.Nd4 dc4 15.N4f3 c3 16.Bc3) 12...Ra1 13.Qa1 Qa8 (13...Qc7 14.Rc1 Ra8 15.Qb1 h6 16.h3) 14.h3 (14.cd5 Bd5 15.Nc4 Qb7 16.dc5) 14...Qa1 (14...Rc8 15.Rd1 cd4 16.Bd4) 15.Ra1 Ra8 16.Nh2 (16.Ra8 Ba8 17.dc5 Bc5 18.cd5 Nd5=) 16...Ra1 17.Ba1 dc4 18.Nc4 Bd5 19.Nd2 Kf8 20.f3 (20.Nhf3 h6=) 20...cd4+= 21.Bd4 Bc5 22.Bc5 Nc5 23.e4 Ba2 24.Bc4 Bc4 25.Nc4 Nfd7 26.Ng4 f6 27.Kf2 Ke7 28.Ke3 e5 29.Nf2 Nb7 30.Nd1 Nd6 31.Ndb2 Nb5 32.Na4 Ke6 33.Nab6 Nb6 34.Nb6 Nd6 35.h4 f5 36.g3 g6 37.Na4 Kf6 38.Nc5 Ke7 39.f4 ef4 40.Kf4 (worse is 40.gf4 fe4 41.h5 Nf5 42.Ke4 Ng3 43.Ke5 Nh5-/+) 40...fe4 41.g4 h5 42.gh5 gh5 43.Kg5 (43.Ne4!? Ne4 44.Ke4=) 43...e3+= 44.Kh5 e2 (44...Nf5!?+=) 45.Nd3= Nf5 ½–½. Glaeser,Hartmut (1675) – Fassmann,Kurt (2055), Halle GER, 2011.

9.a4 Rc8 10.cd5 Nd5 11.Bc4 cd4 12.Bd4 0-0 13.0-0 Nc5 14.Rc1 Qd6 15.e4 Nb4 16.Qe2.

9.a4 cd4 10.Nd4 (10.Bd4 0-0 11.Be2 Rc8 12.0-0 Qc7 13.cd5 Bd5 14.Rc1 Qb7 15.Bc4 Rfd8 16.Bd5) 10...Bb4 11.Ba3 Ba3 12.Ra3 0-0 13.Be2 Rc8 14.0-0 e5 15.Nf5 g6 16.Nd6.

9.Qc2 0-0 10.h3 Rc8 11.Bd3 cd4 12.cd5?? (12.ed4!? dc4 13.Bc4+=) 12...Nc5 (better is 12...Rc2 13.Bc2 de3 14.fe3 Nd5–+) 13.Rc1? (better is 13.Bd4!? Nd3 14.Qd3 Qd5 15.Qb3-/+) 13...Nd3 (13...Qd5?! 14.Bc4 d3 15.Bd5 dc2 16.Bb7 Nb7 17.Nd4-/+) 14.Qd3 Bc5?? (14...Rc1 15.Bc1 de3 16.Qe3 Qd5 17.Qb3–+) 15.Ba1?? (15.e4 ed5 16.e5 Ne4-/+) 15...Bb4 (better is 15...de3 16.Nb3 ef2 17.Kf1 Bd5 18.Bf6 Qf6 (18...gf6?! 19.Nc5 Rc5 20.Rc5 bc5 21.Kf2–+) 19.Nc5 Bf3 (19...bc5?! 20.Kf2 Rfd8 21.Rhd1–+) 20.Qf3 Qb2–+ (20...bc5?! 21.Qf6 gf6 22.Kf2–+; 20...Rc5 21.Rc5 bc5 22.Qf6 gf6 23.Kf2–+)) 16.0-0 Bd2 (16...Qd5 17.Bd4 e5 18.e4 Ne4 19.Ne4-/+) 17.Rc6?? (17.Rc8 Bc8 18.Nd2 Qd5 A) 19.Bd4?? e5–+ (19...Qa2 20.Bf6 gf6 21.Ne4+=); B) 19.Qd4 Qb5 20.Rc1=) 17...Nd5 (17...Nd5 18.Qd4 Bc3 19.Bc3 Nc3 20.Qc3 Bc6 21.bc6 Qd5–+) 0–1. Kocachev,Yuriy – Kravchenko,Daria (1790), Astrakhan RUS, Open, 2012.

9.Bd3 0-0 10.0-0 Ne4 (10...a6 11.ba6 Ba6 12.Ne5=) 11.Qc2 cd4 12.ed4 (12.Bd4 Nd2 13.Nd2 e5=) 12...Nd2 13.Bh7 Kh8 14.Nd2 dc4 15.Nc4 (15.Be4 Bd5+=) 15...Nf6 (15...g6!? 16.Bg6 fg6 17.d5 Nf6=) 16.Bd3+/- Rc8 17.Qa4 Nd5 (17...a6 18.Ne5 (worse 18.ba6 Bg2 19.Kg2 Qd5 20.f3 b5=) 18...Qd5 19.f3 ab5 20.Qb5 Qb5 21.Bb5+/-) 18.Qa7+/- Qc7 19.Nb6 Qb6 20.Qb6 Nb6 21.a4 Nd5 22.Be4 f5 (22...Rb8 23.f3+=) 23.Bd5+/- Bd5 24.Ba3 Ba3 25.Ra3 Ra8 (25...Rc4!? 26.a5 Rd4+/-) 26.a5 Bc4 (26...Kg8 27.Rb1+-) 27.Rb1 Rfd8 28.b6 Rdb8 (28...Rd4!? 29.h3 Rd3+/-) 29.f4 Ra6 30.Rc3 Bd5 31.Rb5 Rba8?? (better 31...Kh7+-) 32.Rd5! ed5 33.b7 Kh7 34.Rc8 (34.Rc8 Rb8 35.Rb8 Ra5 36.Ra8+-) 1-0. wgr069 (2375) - nailch1 (2175), Casual Rapid game, lichess.org, 2021.

9.Bd3 0-0 10.Ne5 dc4 (10...cd4 11.Nd7 Qd7 12.Bd4 dc4 13.Nc4 Qb5 14.0-0-/+) 11.Ndc4 Bg2 (11...cd4 12.Nc6 Bc6 13.bc6-/+) 12.Rg1+= Bd5 13.Nd7 (13.Nc6 Qe8=) 13...Qd7-/+ 14.Ne5 Qb7 (14...Qc7 15.dc5 bc5 16.Qc2+=) 15.dc5+= bc5 (better is 15...Bc5 16.Qc2 Bb4 17.Kf1 Rfc8+=) 16.Nc6?? (16.Ng4!? Ne8 17.Nh6 Kh8 18.Qh5=) 16...g6?? (better is 16...Bc6!? 17.Bf6 Bf6 18.bc6 Qb4 19.Kf1 Ba1 20.Qa1–+) 17.Qc2 (better is 17.Ne7!? Qe7 18.Qc1+=) 17...Bc6–+ 18.bc6 Qc6 19.0-0-0 (19.Rd1!? Rfd8–+) 19...Nd5 (19...Rfd8 20.Bc4–+) 20.Bg6 (20.Kd2 Rab8–+) 20...fg6 (20...hg6?? 21.Rg6 Kh7 22.Rg7 Kh6 23.Qh7) 21.Rg6 Kf7 (21...hg6 22.Qg6 A beautiful mate combination) 22.Rg7 Ke8 23.Qh7 Qd6 (23...Qb7 24.Qg6 Kd7+=) 24.Qh5 (24.Qg6 Kd8 25.e4 Rb8+=) 24...Kd7 (24...Kd8 25.Qe5 Qe5 (25...Rf2?! 26.Rg8 Rf8 27.Qd6 Bd6 28.Rf8 Bf8 29.e4=) 26.Be5 Ke8–+ (26...Rf2?! 27.Bg3 Ra2 28.Rg8 Kd7 29.Ra8=)) 25.Qh4? (better is 25.Qg4 Rab8 26.e4+=) 25...Kc8 (25...Kd8 26.Be5 Bh4 27.Bd6 Rf2 28.Rg8 Kd7 29.Ra8 Kd6-/+) 26.Qa4? (26.Qg3 Qg3 27.fg3 Rb8–+) 26...Rb8 (26...Rf2 27.h4–+) 27.Re7? (27.Rd2 c4 28.e4 Rb2 29.Qc4 Kd8 30.Kb2 Qe5 31.Kb1 Qg7 32.ed5 Qg1 33.Kc2 Rf2 34.de6 Rd2 35.Kd2 Qh2 36.Kd3–+) 27...Qe7 28.Be5 (28.Qc6 Nc7 29.f4 Rb6–+) 28...Rb6 29.e4 (29.Qc2 Nb4 30.Qe2 c4–+) 29...Nb4 (29...Rf2 30.Rg1 Nf6 31.Bf6 Qf6 32.Rg8 Kc7 33.Qa7 Kc6 34.Rc8 Kb5 35.Rc5 Kc5 36.Qa3 Kd4 37.Qa4 Kd3 38.Qd1 Kc3 39.Qe1 Kc4 40.Qf2 Qa1 41.Kd2 Qc3 42.Kd1 Rb1 43.Ke2 Qd3) 30.f4 Qb7 31.Qb3 (31.a3 Nc6 32.Bc3 Rf4–+) 31...Rd8 (31...Rd8 32.Rd8 Kd8–+; 31...Qe4 32.Rd2 c4 33.Rd4 Qh1 34.Rd1 Qh2 35.Qc4 Rc6 36.Qc6 Nc6 37.Bd6–+) 0–1. Roczniak,Jan – Kowal, corr Poland, 1986.

9.Bd3 cd4 10.Bd4 Nc5 11.Bc5 Bc5=.

9.cd5 ed5 10.dc5 Bc5 (10...bc5!? 11.Bd3 c4=) 11.Bd3+= 0-0 12.0-0 Re8 13.Rc1 a6 14.Qb3 (14.a4 Bd6+=) 14...ab5 (14...Bd6 15.ba6 Ba6 16.Ba6 Ra6 17.Rc6=) 15.Bb5+= Ba6 (15...Be7!?+=) 16.Bf6+/– Nf6 17.Be8 Bf1 18.Bf7! (18.Nf1?! Qe8 19.N1d2 Qe6=) 18...Kf7 19.Nf1 Kf8 (19...Kg8 20.Ng3+/–) 20.N1d2 Qd6 21.g3 (21.Rc2 Kg8+/–) 21...Re8 (21...Kg8 22.a4+/–) 22.a4 Ng4 23.Qd3 Ne3 (23...Kg8 24.Ng5 Nf6 25.Ndf3+/–) 24.fe3 Re3 25.Qf5 Ke7? (better is 25...Qf6!? 26.Qf6 gf6+/–) 26.Kh1+– Re6? 27.Qh7 Kd7 28.Qg7 Re7 29.Qg8 Kc7 30.Nd4 Kb7 31.Nf5 Qe5 32.Ne7 Qe7 33.Qd5 Ka7 34.Rf1 Qe3 35.Rf7 Ka6 36.Qa8 1–0. marus – sondergaard, internet, 2001.

9.Be2 0-0=.

8.Nbd2 0-0 9.Bd3 Nbd7 10.0-0 Rc8 11.Rc1 dc4 12.Nc4 cd4 13.Nd4 Nd5 14.Qh5 N7f6 15.Qh3 Nb4 16.Bb1 Bc5?? 17.Nc6!+– Bc6 18.Bf6 Nd3 19.Bd8 (19.Bd8 Rfd8 20.Bd3 Rd3 21.bc6+–) 1–0. bratek55 (1755) – inznorek (1660), kurnik, 2011.

8.Nbd2 Nbd7 9.Bd3 Qc7 10.Rc1 Qd8 11.0-0 0-0 12.dc5 Nc5 13.Bb1 dc4 14.Nc4 Qd1 15.Rfd1 Bf3 16.gf3 Rad8 17.Ne5 Rd1 18.Rd1 Rd8 19.Rd8 Bd8 20.Nc6 Bc7 21.Na7 Nd5 22.Nc6 Na4 23.Bd4 Nac3 24.Bd3 Na2 25.e4 Ndb4 26.Bc4 Nc6 27.bc6 Nb4 28.Bb5 Kf8? 29.Bb2 f6?? 30.Ba3+– Bd6 31.Bb4 Bb4 32.c7 (32.c7 g6 33.c8Q Kg7 34.Qc7 Kh6 35.Qb6+–) 1–0. bratek55 (1610) – zito86 (1645), kurnik, 2011.

8.Bd3 dc4 9.Bc4 Nbd7 (9...cd4 10.Bd4 0-0 11.0-0=) 10.0-0 0-0 11.Nbd2 (11.Nc3 a6=) 11...Qc7 (11...a6 12.Qa4=) 12.Rc1+= Rac8 13.Bd3 (13.dc5 Nc5 14.Be5 Qd7=) 13...Qb8 (13...Bd5 14.dc5 Nc5 15.Be5-/+) 14.Re1 (14.dc5 Nc5 15.Be5 Bd6 16.Bd6 Qd6=) 14...Rfd8 15.e4 cd4 16.e5 (16.Rc8 Bc8 17.e5 Nd5 18.Nd4 Ne5 19.Ne6 A) < 19...Be6 A1) < 20.Re5 Bf6 21.Qh5 g6-/+ (21...Be5?! 22.Bh7 Kf8 23.Be5=); A2) 20.Be5 Bd6 21.Qh5+=; B) 19...Nd3 20.Nd8 Ne1= (< 20...Nb2 21.Qb3+/–)) 16...Ne8 (16...Rc1!? 17.Qc1 Nc5 18.ef6 Nd3 19.fe7 Nc1 20.ed8R Qd8 21.Rc1 d3=) 17.Bd4 (17.Rc8 Qc8 18.Bd4 Nc5=) 17...Rc1 (17...Nc5 18.Re3=) 18.Qc1 Nf8 (18...Nc5 19.Re3=) 19.Qb1 (19.Rd1 Bc5 20.Bc5 Rd3 21.Bf8 Kf8+=) 19...Bb4?? (better is 19...Bc5 20.Bc5 bc5+=) 20.Qb4+– (20...Nc7 21.Rd1+–) 1–0. Nemec,Zdenek – Friedrich,Arnold, corr CSR CF, 1989.

8.Be2 Nbd7 9.Nbd2 Ne4 (9...0-0 10.0-0=) 10.Ne4 de4 11.Ne5 Ne5 (11...cd4 12.Bd4 (worse 12.Qd4 Bf6-/+) 12...Bb4 13.Kf1 Ne5 14.Be5=+) 12.de5 Qd1 13.Rd1 0-0?? (13...a6 14.ba6 Ba6 15.h4=) 14.0-0 (better 14.Rd7+–) 14...Rad8 15.Rd8 Rd8 16.Rd1 Rd1 17.Bd1 f5 18.f3 ef3 19.Bf3 Bf3 20.gf3 g5 21.Kg2 h5 Black prepares the advance g4 22.f4 g4 23.h3 (23.Bc3 Kf7=) 23...Kg7 (better 23...Kf7=+) 24.h4?? (better 24.hg4 fg4 25.Kg3=) 24...Bh4–+ 25.a3 (25.Bc3 Be7–+) 25...Kf7 (25...Be1 26.Bc1–+) 26.Bc3 Ke7 27.Kf1 (27.a4 Kf7–+) 27...Kd7 28.Kg2 Be7 29.Kg3 h4 30.Kg2 h3 31.Kh2 Bh4 32.Bd2 Bf2 33.a4 (33.Bc1 Kc7 34.Bd2–+) 33...g3 (better 33...Ke7–+) 34.Kh3= Ke7 35.Kg2 Kf7 (35...Ke8 36.a5=) 36.Kf1 (36.a5!? Ke8 37.a6+=) 36...Kg6= 37.Be1?? (better 37.Kg2 Kf7 38.a5=) 37...Be1–+ 38.Ke1 Kh5 39.Kf1 Kh4 40.Kg2 (40.e4 Kg4 41.ef5 Kf5–+) 40...Kg4 41.Kg1 Kf3 42.Kf1 Ke3 43.Kg2 Kf4 44.Kf1 Ke5 45.Kg2 Kd4 (better 45...Kf4 46.Kh3 Kf3 47.Kh4–+) 46.Kg3 Kc4 47.Kf4 Kb4 48.Ke5 Ka4 49.Ke6 Kb5 50.Kf5 Kc4 51.Ke4 a5 52.Ke3 Kc3 53.Ke2 Kc2 54.Ke3 a4 55.Ke4 a3 56.Kd5 a2 57.Kc4 a1Q 58.Kb5 Qa5 59.Kc4 b5 60.Kd5 b4 61.Kc4 b3 (61...Qd8 62.Kc5 b3 63.Kb4 b2 64.Kc5 b1Q 65.Kc4 Qd3 66.Kc5 Qbb5) 62.Kd5–+ c4! 63.Kc4 (63.Ke4 b2 64.Ke3 Qe5 65.Kf2 Qf4 66.Ke2 c3 67.Ke1 b1Q 68.Ke2 Qd1) 63...b2 64.Kd4 b1Q 65.Kc4 (65.Ke3 Qe5 66.Kf2 Qbe1 67.Kf3 Q5e4) 65…Qbb4 0–1. sirgeshdb (1910) – terencetao (1910), lichess.org, 2020.

8.Nc3 Bd6 9.d4 0-0 10.Be2 (10.dc5 bc5 11.Bd3 d4 12.ed4 cd4+=) 10...Nbd7 (10...a6 11.dc5 bc5 12.0-0=) 11.0-0 (11.dc5 bc5 12.0-0 Rc8=) 11...Re8 12.Rb1 (12.dc5 bc5 13.Rc1 Rc8=) 12...c4 13.Nd2 (13.Rc1 a6+=) 13...Nf8 (13...a6 14.Qc2+=) 14.Qc2 (14.e4 a6 15.e5 Bb4 16.ef6 Qf6 17.ba6 Ra6+–) 14...Ng6 (14...a6 15.ba6 Ra6 16.Rfc1+=) 15.Rfe1 (15.Rfc1 a6+=) 15...Rc8 (15...a6 16.ba6 Ra6 17.e4+=) 16.g3 (16.e4 Nf4+=) 16...Bb4 (16...a6 17.ba6 Ba6 18.Bf3+=) 17.a3 Ba5 (17...Bd6 18.Qa4+=) 18.Bf1 (18.Bf3 a6=) 18...Qd7 (18...Qd6 19.Bg2+=) 19.Bg2= Re7 (19...a6 20.ba6 Ba6 21.e4=) 20.Rec1 h5 (20...Qe6 21.Nf3=) 21.h3 (21.Nf3 Qe6=) 21...Rce8 (21...h4 22.Nf1=) 22.Nf3+= h4 23.gh4 (23.Nh4 Nh4 24.gh4 Qe6=) 23...Qe6 24.Ra1 (24.Ng5 Qd6=) 24...Rc7 (24...a6 25.ba6 Ba6 26.h5 Nh5 27.Rab1=) 25.Rd1 (25.Ng5 Qe7=) 25...Ne4 (25...a6 26.ba6 Ba6 27.Ng5=) 26.h5 Bc3 (26...Ne7 27.Ne5+=) 27.Bc3 Nc3 28.Qc3 Ne7 29.Ne5 Nf5 30.Ng4 (30.Rac1 a6+=) 30...Rce7 (30...Nh4 31.Rac1=) 31.Rac1+= Rd7 (31...Nd6 32.a4+=) 32.Qb4 (32.Ne5 Rc7+=) 32...Nh4 (32...a6 33.ba6 Ba6 34.Rc3+=) 33.Bh1 (33.Ne5 Rc7+=) 33...Rdd8 (33...a6 34.ba6 Ba6 35.Rc3+=) 34.Kh2 (34.Qa4 Ra8+/–) 34...Kh8 (34...a6 35.ba6 Ba6 36.h6+=) 35.Rg1 f6 (35...a6 36.h6 gh6 37.ba6 Ba6 38.Ne5+=) 36.Qb1 (36.h6 g6+/–) 36...Bc8 (36...Qd6 37.Rg3=) 37.Rg3 (37.Qb4 Bb7=) 37...Qf7? (better is 37...Nf5!? 38.Rg2 Qd6 39.Kg1 Qa3=) 38.h6+/– g5 39.Rc3 (39.Qc2 Qf8+/–) 39...Bd7 (39...Nf5 40.Rg2+/–) 40.a4 (40.Kg1 Nf5 41.Rf3 Qe6+/–) 40...Bf5 41.Qd1 (41.Qb4 Qf8 42.Qf8 Rf8+/–) 41...Bd3 (41...Qg6 42.Kg1+/–) 42.Rd3 (42.Kg1 Rc8+/–) 42...cd3+= 43.Qd3 Rc8 44.Qa3 (44.h7 Rc4=) 44...Nf5= 45.Rf3 Qe6 (45...Qc7 46.Kg1 Qc1 47.Qc1 Rc1 48.Kh2+–) 46.a5 ba5 47.Bg2 Rf8 48.Qa5 Qd6 49.Kg1 Rc1 50.Bf1 Nh4 (50...Qd7 51.Qa6 Nh4 52.Rf6 Nf3 53.Kg2 Nh4 54.Kh2 Qc7 55.Ne5+/–) 51.Rg3 Rf7 52.Qa2 (52.Qd2 Qg3 53.fg3 Nf3 54.Kf2 Nd2–+) 52...Rfc7 53.Qa4 Rb1 (53...f5 54.Ne5 Qh6 55.Qa2=) 54.Nh2 (54.Qa5 Rcc1 55.Nh2 Nf5 56.Qa7 Ra1+=) 54...Kh7 (54...Nf5 55.Qa2 Rbc1 56.Rg2+=) 55.Qa2 (55.Ng4 Rbc1=) 55...Rbc1 56.Qb3 (56.Ng4 Nf5 57.Rf3 Kg6=) 56...R7c3 (56...Kh6 57.Ng4 Kg7 58.Qd3+=) 57.Qa2= Ra3 58.Qd2 (58.Qe2 Nf5 59.Qh5 Qe6= (worse is 59...Nh6 60.h4+/–)) 58...Raa1+= 59.Qe2 Qe6 (59...Qe6 60.Qh5 Rab1+=). Baer,Werner – Nemec,Zdenek, TT–12 ETC, 2004.

8.d4 c4 9.Be2 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nc3 Bd6 14.0-0 0-0 15.Qc2 Qe7 16.Nd2 Bb4 17.Bf3 Rb8 18.Rb1 Nf8 19.g3 Ne6 20.Bg2 Nc7 21.Nf3 Bc3 22.Bc3 Qe8 The isolani on b5 becomes a target 23.Bb4 Nb5 (23...Qb5?! 24.Bc5 Qe8 25.Rb6+=) 24.Ne5 Nd7 25.Nd7 Qd7 26.Ra1 Ra8 27.Ra8 Ba8 28.Bf3 Bc6 29.Bg2 h6 30.h3 h5 31.Qb1 g6 32.Qa1 Bb7 33.Bd2 Qc6 Black prepares the advance c3 34.Bc1 c3 35.g4 hg4 36.hg4 Nd6 37.Qa3 Kg7 38.Qb3 b5 39.Qb4 Qc7 40.g5 Qc6 41.Bf1 Bc8 42.Bg2 c2 43.f3 Nc4 44.Qc3 Qb6 45.Qc2 b4 46.f4 b3 47.Qc3 Qb5 48.Kh2 Bf5 49.Kg3 Nd6 (better is 49...b2 50.Bb2 Nb2 (50...Qb2?! 51.Qb2 Nb2 52.Bd5=) 51.Bd5 Nd1–+) 50.Qc5= Qe2 51.Qd6 Qe1 52.Kh2 Qc1 53.Bd5 (53.Qd5?? Qe3 54.Qd6 b2 55.Qf6 Kg8 56.Qd8 Kh7–+) 53...Qd2 54.Bg2?? (54.Kh1 Qe1 55.Kg2 Qe2 56.Kg3 Qe3 57.Kh2–+) 54...Qe3 (better is 54...b2 55.Qf6 Kg8 56.Qd8 Kh7–+) 55.Qf6-/+ Kg8 56.Qd6 Kh7 57.Qc7 Kg7 58.Qb8 Bg4 59.d5 Qc3 60.d6 (60.Qe5 Qe5 61.fe5–+) 60...b2 61.Qb6 Bf5 62.d7 Bd7 63.Bd5 Bf5 (better is 63...Be6!? 64.Be6 Qc2 65.Kg3–+) 64.Qf6 Qf6 65.gf6 Kf6 66.Ba2 b1Q 67.Bb1 Bb1 68.Kg3 Kf5 0–1. Wantoch_Rekowski,Jacek (1850) – Gudok,Viktor (2450), OP–2010-0-01301, 2010.

8.d4 Nbd7 9.dc5 bc5 10.Be2 Bd6 11.0-0 0-0 12.Nc3 Qc7 13.h3 Rfd8 14.Rc1 Ne5 15.Ne5 Be5 16.Qc2 d4 17.Nd1 Rac8 18.f4 Bd6 19.Bf3 Qe7 20.Bb7 Qb7 21.a4 Nd5 22.Qe4 Re8 23.Qf3 Rb8 24.ed4 Nf4 25.Qb7 Rb7 26.Rc5 Ne2 27.Kf2 Bc5 28.dc5 Rd7 29.Ne3 Rd2 30.Nc4 Rc2 31.Nd6 Re6 32.Ba1 Nc3 33.Kg3-/+ Na4 34.Rf7 Rg6 35.Kf3 Nc5 36.Ra7 Rd6 37.Rg7 Kf8 38.Rh7 Rd3 39.Kf4 Rf2 40.Ke5 Rg2 41.b6 Rd1 42.Ra7 Nd7 (43.Ke6 Rg6 44.Kf5 Rb6–+) 0–1. mafergut (2170) – Benjap (2410), ChessWorld.net, 2003.

8.d4 Nbd7 9.Be2 Be7 10.0-0 0-0 11.Nc3 Bd6 12.Qc2 Re8 13.Rad1 c4 14.Qf5 Qc7 (14...a6 15.Ra1+=) 15.Qc2 Ne4 16.Ne4 Re4 17.g3 Ree8 18.e4 a6 (worse is 18...Re4 19.Ng5 f5 20.Ne4 fe4 21.f3 Bg3 22.fe4 (22.hg3 Qg3 23.Kh1 Re8 24.fe4 Re4 25.Qe4 de4 26.Bc4 Kh8–+) 22...Bh2 23.Kh1=) 19.ba6 Ra6 20.a4 (20.e5 Bb4+=) 20...Raa8 (20...Qc6 21.Ne5 Be5 22.de5 Qa4 23.Qc3-/+) 21.ed5 Bd5 22.Ne5 Ra5 (worse is 22...Ne5 23.de5 Be5 24.Rd5 Bb2 25.Qb2 Ra4 26.Qb5+–) 23.f4 b5 24.ab5 Rb5 25.Ba1 Nb6 26.Rc1 Increasing the pressure on the isolated pawn on c4 26...Ra5 27.Bc3 Ra3 28.Bb2 Ra2 29.Qb1 Qa7 (29...Qa7 30.Bf3 Bf3 31.Rf3 Qa6-/+; 29...Rea8 30.Bd3 Kh8 31.Rf2-/+) 0–1. Schulz,Hans_Juergen (1750) – Nemec,Zdenek (1885), b2–b4.com, 2005.

8.Be2 Nbd7 9.0-0 Bd6 10.a4 a5 (10...0-0 11.Nc3=) 11.d3 (11.d4 c4=) 11...Qc7 12.Nbd2 0-0 13.Qc2 (13.Rc1 Rfe8=) 13...Rae8 14.Rfe1 (14.d4 c4=) 14...Ng4 Now all is on h2 (14...Re7 15.Rac1=) 15.Nf1 f5 16.h3 (16.Rac1 f4 17.e4 Ngf6=) 16...Nge5 (16...Ngf6 17.d4=) 17.Rac1 (17.Ne5 Be5 18.d4 Bf6=) 17...Nf3 18.Bf3 Ne5 19.Be2 Qf7 (19...f4 20.ef4 Nd7 21.g3=) 20.f4 (20.d4 Ng6=) 20...Nd7 21.Bf3 Nf6 22.Qf2 Re7 23.Ng3 (23.Qg3 Re6=) 23...Qg6+= 24.Rc2 Rfe8 25.Rce2 (25.Nf1 Re6=) 25...Kh8 (25...Rc8 26.Rc2+=) 26.Nf1 c4 27.dc4 Ne4 (27...dc4 28.Rc2=) 28.Be4+= Re4 29.Nd2 dc4 (29...R4e7!?=) 30.Ne4+/– Be4 31.Bc3 (31.Rc1 Bd3 32.Ree1 Qe6+/–) 31...Bc5 32.Kh2 (32.Rd2 Bd3+=) 32...Be7 (32...Bd3 33.Rd2+=) 33.Rg1 (33.Rd2 Bb4 34.Bb4 ab4+/–) 33...Bf6 (33...Bb4 34.Rc1 Bd3 35.Ree1+=) 34.Bf6 (34.Bd4 Bd3 35.Rd2 Qh6+/–) 34...Qf6 35.g4 (35.Rd2 Bd3+/–) 35...c3 (35...fg4 36.Rg4 c3 37.Re1=) 36.gf5 Rc8 37.Ree1 (37.Rc1 Rc4+=) 37...c2 38.Rc1 Qc3 39.Qe1 (39.Rge1 Qb4+=) 39...Qd3 40.h4 Rc3 (40...Rc4 41.Qg3 Qd2 42.Rg2 Bg2 43.Qg2 Qg2 44.Kg2+=) 41.f6 (41.Rf1 Bf5 42.Rf2 h6=) 41...gf6 42.Rg3 Rb3 (42...Rc4 43.Qf2-/+) 43.Qf2= Rb1 44.Rgg1 Rc1 45.Rc1 Qd1 Do you see the mate threat? 46.Qg1 (46.Rd1 cd1Q) 46...Qe2 (46...Bf3!? 47.h5 Bh5-/+) 47.Kg3+= h5 48.Kh3 Qf3 49.Kh2 Qe2 (49...Bf5 50.Qe1+=) 50.Kh3 Kh7 51.Rf1?? (better is 51.Re1 Bf5 52.Kg3-/+) 51...Bf5–+ 52.Kg3 Qc4 (better is 52...Bg4 53.Qg2 Qg2 54.Kg2 Bd1–+) 53.Rc1 (53.Ra1!?=) 53...Qa4-/+ 54.Qf1 Qb3 (54...Qa3 55.Qe1-/+) 55.Qe2 Bg4?? (better is 55...Qg8 56.Kf2 Qg4+=) 56.Qc2+– Qc2 57.Rc2 a4 58.Rc6 Kg6 59.Rb6 a3 (59...Kf7 60.Ra6 Ke7 61.Ra4+–) 60.Ra6 Be2 61.Ra3 (better is 61.Ra5 Bb5 62.Rb5 a2 63.f5 Kg7+–) 61...Bb5 62.f5 Kh6 (62...Kf7 63.Ra7 Ke8 64.Kf4+–) 63.Kf4 Be2 (63...Kg7 64.Ra7 Kf8 65.e4+–) 64.e4 Kg7 65.e5 fe5 66.Ke5 Kf7 (66...Bc4 67.f6 Kf8 68.Kf5+–) 67.Ra7 Kf8 (67...Kg8 68.Kf6 Bd3 69.Rd7+–) 68.Kf6 Ke8 (68...Bf3+–) 69.Re7 (69.Re7 Kd8 70.Re2 Kd7 71.Kg5 Kd8 72.f6 Kc7 73.f7 Kb6 74.f8Q Kc6 75.Qc8 Kd5 76.Rd2 Ke4 77.Qf5 Ke3 78.Qd3) 1–0. Frankel,Zygmund – Carter,G, Premier Reserve NZL–chB, 1980.

8.Be2 Be7 9.0-0 0-0 10.Qc2 a6 11.a4 Qc7 (11...ab5 12.Bb5 d4 13.Re1=) 12.Be5 Qd8 13.Nc3 Nbd7 14.ba6 Ba6 15.Ba6 Ne5 (15...Ra6 16.d4=) 16.Ne5+= Ra6 17.Nc6 Qc7 18.Qd3 c4 (18...Raa8 19.Ne7 Qe7 20.Nd5 Nd5 21.Qd5+=) 19.Nd5+– Nd5 (19...cd3?? 20.Nc7 (20.Nce7?! Qe7 21.Ne7 Kh8+–) 20...Ra5 21.Ne7 Kh8 22.Rfc1+–) 20.Qd5 Bf6 21.Rac1 (21.Qc4?! b5 22.Qb5 Rc6=+ (worse 22...Qc6 23.Qc6 Rc6 24.Rfc1+=)) 21...Ra4 22.Rc4 Rc4 23.Qc4 Rc8 24.Rc1 Qd6 1–0. GuestBDPM – GuestQDKR, freechess.org, 2019.

8.Be5 Nbd7=+ 9.Bg3 Ne4 10.Nc3 Ndf6 11.Bd3 Nc3 (11...Ng3!? 12.hg3 Bd6=+) 12.dc3= Ne4 13.Be4 de4 14.Ne5 Qd1 15.Rd1 Rd8?? (better 15...Bc8=) 16.Rd8+– (16.Rd8 Kd8 17.Nf7 Ke7 18.Nh8+–) 1–0. aravind555 – tim64, lichess.org, 2018.

8.Nc3 a6=.

8.d3 a6 9.e4 Bb7 10.ba6 Na6 11.Qa4 Qd7 12.Qb3=.

8.d3 Be7 9.Be2 (9.e4 Bb7=) 9...0-0 (9...a6 10.e4 Bb7 11.ba6 Na6 12.Qa4 Nd7 13.0-0+=) 10.0-0 Bb7 (10...a6 11.e4 Bb7 12.Nc3=) 11.Nbd2 (11.Nc3 a6=) 11...Nbd7 (11...a6 12.Qa4=) 12.Nc4 Nd5 (12...a6 13.ba6 Ra6 14.Qc2=) 13.Nfe5 (13.e4 Nf4=) 13...Ne5 14.Ne5 Qe8 15.d4 f6 16.Ng4 (16.Nf3 a6 17.e4 Nf4 18.dc5 bc5-/+ (18...Be4?! 19.cb6 ab5 20.Re1+=)) 16...Nc7 (16...h5 17.e4 Nf4 18.Ne3 cd4 19.Bd4-/+) 17.f4 (17.Bc4 h5-/+ (17...Nb5?! 18.Be6 Kh8 19.Qc2=)) 17...Qg6 (17...Nb5 18.Bc4 Bd6 19.f5+=) 18.g3 (18.dc5 Rfd8 (18...bc5 19.Qd7 Qe4 20.Bf3+–) 19.Qa4 Rd2-/+) 18...h5 (18...cd4 19.Rc1 Rac8 20.Bd4 Ba3=) 19.Nf2= h4 20.g4 (20.Qd3 Qd3 21.Bd3 hg3 22.hg3 a6 23.dc5 Bc5 24.ba6 Ba6+=) 20...Rfd8 (20...cd4 21.Qd4 Bc5 22.Qd7 Be3 23.Qc7-/+) 21.Bd3= Qh6 22.h3 (22.g5 fg5 23.Ng4 Qh8=) 22...Nd5 23.Qe2 Kf7 (23...Rac8 24.Rac1+=) 24.g5 (24.Be4 a6=) 24...Qh8 (24...fg5 25.Ng4 Qh8 26.fg5 Kg8 27.dc5 Bg5 28.c6+–) 25.Ng4+= Rf8 (25...f5 26.Ne5 Ke8+/–) 26.e4+/– Nc7 27.d5 (27.gf6 gf6 28.Rac1 a6 29.dc5 Bc5 30.Kh2 Ke7+=) 27...Ke8 (27...ed5 28.ed5 Rae8 29.Qc2 Bd5 30.gf6 gf6 31.Bg6 Kg8 32.Be8 Re8 33.Kh2+/–) 28.gf6 (28.de6 Ne6 29.g6 Rd8+=) 28...gf6+= 29.d6 (better is 29.de6!? Ne6 30.Bc4+=) 29...Bd6= 30.Nf6? (better is 30.e5!? fe5 31.Be5 (worse is 31.Ne5 Qg8 32.Bg6 Ke7-/+) 31...Be5 32.Bg6 Kd7 33.Ne5 Kc8 34.Kh2+=) 30...Rf6–+ 31.e5 Rf8 (31...Qg7 32.Qg4 Qg4 33.hg4 Be5 34.Be5 Rf7+=) 32.Bg6 (32.ed6 Qg8 33.Qg4 Qg4 34.hg4 Nd5+=) 32...Kd7+= 33.ed6 The passed pawn on d6 will quickly become a dangerous weapon 33...Qh6 (33...Qg8 34.Qd3 c4+=) 34.f5 (34.Qd3 c4 35.Qc2–+) 34...Qg5+= 35.Qg4 Qg4 36.hg4 Kd6 (36...Nb5 37.Bg7 ef5 38.Rad1 Nd6 39.Bf8 Rf8 40.Bf5 Kc7 41.Rde1-/+) 37.Rad1 Bd5 38.a4 (38.Rfe1 Ke7-/+ (38...Nb5? 39.Re6 Kc7 40.Be5 Kc8 41.Rd5+–)) 38...a6 39.Rfe1 Ke7 (39...ab5 40.ab5 Ke7 41.g5-/+) 40.Be5 Ne8?? (better is 40...Rfc8-/+) 41.Rd5!+– ab5? (41...ed5 42.Bg7 A double attack) 42.Bd6! Nd6 43.Re6 Demolition of pawn structure 43...Kd7 44.Rdd6 Kc7 45.Rc6 (45.Rc6 Kd7 46.Red6 Ke7 47.f6 Rf6 48.Rf6+–; 45.Rb6?! Ra4 46.Rec6 Kd7 47.Rc5 Rg4 48.Kh2 b4+–; worse is 45.ab5 Ra4+–) 1–0. Rancic,Danijela – Milovanov,Olga, YUG–ch sf (Women), 1995.

9.Qc2 Nbd7+=.

9.Bc4 Nbd7 10.0-0=.

9.Bc4 Be7 10.0-0 0-0 11.d3 Nbd7= 12.a4 (12.Qe2 Qc7=) 12...Nd5 (12...Qc7 13.Nd2=) 13.Ne4 N5f6 (13...f5 14.Ng3 Bf6 15.Qd2=) 14.Qc2 Ne4 15.de4 Nf6 16.Ng5 (16.Bf6 Bf6 17.e5 Be7=) 16...h6 17.Rad1 Qc8 18.e5 hg5 19.ef6 Bf6 (worse is 19...gf6 20.f4 g4 21.f5+–) 20.Bf6 gf6 21.f4 (better is 21.Qc3 e5 22.Rd6 Bg2 23.Kg2 Qg4 24.Kh1 Qf3 25.Kg1 Qg4 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1=) 21...Kg7 (better is 21...Qc7=) 22.fg5+– fg5 23.Qf2 f6 24.Rd6 Re8?? (better is 24...Rf7 25.Re6 Qd8+–) 25.Qf6 (25.Qf6 Kh7 26.Bd3 Be4 27.Be4 Kg8 28.Qf7 Kh8 29.Qh7) 1–0. Luzuriaga,Norberto H (2025) – Von Rosenberg,Clemens (1695), 11. VCC–Open, 2002.

9.Bc4 Be7 10.0-0 0-0 11.d4 cd4 12.ed4 Nbd7 13.Qe2 Rc8 14.Ne5 Ne5 15.de5 Nd5 16.Nd5 ed5 17.Bd3 Bc5 18.Qg4 d4 19.Rfe1 Qd5?? (better 19...g6+=) 20.Be4+– f5 (20...Qe6 21.Qe6 fe6 22.Bb7 Rc7+–) 21.Bd5 (21.Bd5 Bd5 22.Qf4+–) 1–0. DEFFM – GuestYPMQ, freechess.org, 2019.

9.Bc4 Be7 10.0-0 0-0 11.Ne5 Qc7 12.f4 Nbd7=.

9.Bc4 Be7 10.Qe2 0-0+=.

9.Be2 Nbd7 10.0-0 Be7 11.d4 cd4 (11...0-0 12.Rc1+=) 12.Nd4 Nc5 (12...Rc8 13.Nc6 Bc6 14.bc6 Rc6 15.Qa4+=) 13.Nc6+– Qc7 14.Bf3 0-0 15.Qc2 (worse 15.Ne7 Qe7 16.Bb7 Nb7=) 15...Bd6 16.g3 e5 17.Rad1 Rfe8 (17...a6 18.Rd2 Rfe8 19.Rfd1+=) 18.Nd5 Nd5 19.Bd5 Bc6? (better 19...a6 20.a4 ab5 21.ab5 Na4+–) 20.Bc6+– Rad8 (20...e4 21.Ba8 Ra8 22.Rd5+–) 21.Be8 Re8 22.Rd5 f6 (22...Bf8 23.Rfd1+–) 23.Rfd1 Rd8 (23...Bf8+–) 24.Ba3 (24.Ba3 Kf7 25.Qh7+–) 1–0. GuestXFHR – GuestHQXP, freechess.org, 2020.

9.g3 Be7 10.Bg2 Nbd7 11.0-0 0-0 12.Ne2 (12.d3 Qc7=) 12...Qc7 13.Rc1 (13.Qc2 g6=) 13...Rad8 (13...a6 14.ba6 Ba6 15.Re1+=) 14.d4 (14.Ned4 a6+=) 14...Qb8 (14...a6 15.ba6 Ba6 16.Qc2=) 15.Qc2 (15.Nf4 a6 16.ba6 Ba6=) 15...Be4 (15...Qa8 16.Nh4+=) 16.Qa4 (16.Qd1 Nd5=) 16...Qa8 17.Nh4 Bg2 18.Ng2 Ne4 19.Qc2 Ndf6 (19...Ng5+=) 20.Ba3? (better is 20.f3!? Ng5 21.e4=) 20...Ng5 21.Bb2 (21.Kh1 a6 22.Nc3 ab5 23.Nb5 Qf3-/+) 21...Nh3 (21...Rc8!? 22.Kh1 cd4 23.Qd3 Rc1 24.Nc1 de3 25.Qe3–+) 22.Kh1-/+ Ng4 (better is 22...Rc8!? 23.f3 cd4-/+) 23.Ng1= Ng5 (23...Ng1 24.Kg1 cd4 25.Bd4=) 24.Qe2 (24.f3 Nh6+=) 24...Nf6 25.dc5 bc5 (25...Nfe4 26.Rfd1 Nc5 27.f3 Rd1 28.Rd1=) 26.Bf6 Bf6 27.Rc5 (27.f3 e5 28.Rc5 Rc8=) 27...Ne4+= 28.Rcc1? (better is 28.Rc2!?+=) 28...Rd2–+ 29.Qf3 Ra2 30.Ne2? (30.Nh3 Rd8–+) 30...Rd8 (better is 30...Nd2!? 31.Qa8 Ra8 32.Rg1–+) 31.Rcd1 (31.Rfe1–+) 31...Ng5 (better is 31...Ng3!? 32.Qg3 Rd1 33.Rd1 Re2–+) 32.Qa8-/+ Ra8 33.Nh4?? (better is 33.Ngf4-/+) 33...Re2–+ 0–1. Nikolic,Jovane – Labegalini,Antonio Luiz (1895), 30. Campinas Open LCX, 2009.

8.Nc3 Nd7=.

8.Bc4 Nb4 9.0-0 Nd3 (9...Be7 10.Bg7 Rg8 11.Bc3+=) 10.Bc3+– Nb4 11.d4 Nd7 12.Nbd2 Nf6 13.a3 (13.Qa4 Bd6+–) 13...Nbd5 14.Bb2 cd4 15.Bd4 Rc8 16.Qa4 Be7 (16...Bc5 17.Bc5 Rc5 18.Qa7+=) 17.Qa7 (better 17.Rac1 Ra8 18.Be5+–) 17...Rb8? (17...Qc7 18.Rfc1+–) 18.Be5 (better 18.e4 Nc7 19.Bb6+–) 18...Bd6+– 19.Bd6 Qd6 20.e4 Nf4 21.e5 (21.Rac1 Qc7 (21...Ne4? 22.Rfd1 Nd2 23.Rd2 Nh3 24.gh3+–; 21...Be4?? 22.Ne4 Ne4 23.Rfd1+–) 22.Rfe1 Ra8+–) 21...Qc7 22.Rfc1 (worse 22.ef6 Ra8 23.fg7 A) 23...Ra7?? 24.gh8Q (24.gh8B?! Ng2 25.Be5 Qc5+–; 24.gh8N? Bf3 25.gf3 f5–+) 24...Ke7 25.Rfc1+–; B) 23...Rg8 24.Qa8 Ba8=+) 22...Nd7 23.Bf1 Nc5?? (better 23...Qd8!? 24.Rc6 0-0+=) 24.Ne4! Ra8? (24...Be4 25.Qc7 Pinning (25.Qc7 Deflection); 24...Ne4 25.Rc7 Pinning (25.Rc7 Deflection)) 25.Rc5 bc5 (25...Ra7?? 26.Rc7 Be4 27.Ra7+–) 26.Qb7!! (26.Qc5?! Qc5 27.Nc5 Bd5=) 26...Qb7 27.Nd6 Ke7 28.Nb7 c4 29.Bc4 Rhc8 30.Nd6 Rc5 31.b6 1–0. DEFFM – Guestxxx, freechess.org, 2019.

8.Bc4 Nd7 9.0-0+=.

8.Be2 Nd7 9.0-0 N7f6 10.Ne5 Qc7 11.f4 Bd6 12.Qc2 Nb4 13.Qb3 Bd5 (13...0-0 14.Nc4=) 14.Bc4 (better is 14.Nc4 a6 15.ba6+=) 14...Ne4?? (better is 14...a5=) 15.a3+– Bc4 16.Qc4 (16.Nc4?! Nd5 17.Bg7 Rg8+–) 16...f6 (16...Nd2 17.Nd2 Nd5+–) 17.ab4 fe5 18.Qe4 0-0 19.Be5 (better is 19.bc5!? Qc5 20.Be5 Be5 21.Qe5 Qe5 22.fe5 Rfc8+–) 19...Be5 20.fe5 (20.Qe5 Qe5 21.fe5 cb4 22.Rf8 Kf8+–) 20...cb4 21.Qb4 (21.Rf8 Rf8 22.h3 b3+–) 21...Qe5? (21...Rf1 22.Kf1 Rf8 23.Ke2 Qc1+/–) 22.Nc3 Rf6 (22...Qc7 23.d4+–) 23.Rf6 (23.Qe7 Qc5 24.Ra7 Ra7 25.Qa7 Rf1 26.Kf1 Qf8 27.Ke2 Qd8+–) 23...gf6 (23...Qf6 24.Rf1 Qg5 25.Qe4+–) 24.Qg4 Kf7 25.Rf1 (25.Qf3 Qb8 26.Ne4 Qe5+–) 25...Rg8 (25...f5 26.Qf3 Rc8 27.e4+–) 26.Qf4 (better is 26.Qf3 f5+–) 26...Qf4 27.Rf4 Rc8 (27...Rd8 28.Kf1+–) 28.Ra4 (28.Ne4 Rc1 29.Kf2 f5+–) 28...Rc7 29.Kf2 f5 30.h3 h5 (30...e5 31.e4 Ke6 32.ef5 Kf5 33.Ke3+–) 31.e4 Kf6 32.ef5 Kf5 33.g3 Rg7 (33...e5 34.g4 hg4 35.hg4 Ke6 36.Ne4+–) 34.Rf4 Ke5 35.Re4 (35.d4 Kd6+–) 35...Kf5 (35...Kd6 36.Rh4 Rf7 37.Ke3+–) 36.Kf3 (36.d4 Rh7+–) 36...Rc7 37.Ra4 (37.Rf4 Kg6+–) 37...Rd7 (37...e5 38.Rh4 Kg6 39.Ke4+–) 38.Ke3 Rg7 39.Ne4 (39.Rf4 Kg6+–) 39...Ke5 (39...Rd7 40.Ra1 Kg6 41.Rf1+–) 40.d4 Kd5 (40...Kf5 41.Nd6 Kg6 42.Kf4+–) 41.Nc3 (better is 41.Nf6 Kd6 42.Ne8 Kd5 43.Ng7+–) 41...Kd6 42.Kf4 Rf7 43.Ke4 (43.Kg5!? Rf3 44.Ne4 Kd5 45.Nf6 Kd6 46.Ra7 Rf5 47.Kg6 Rb5 48.Rd7 Kc6+–) 43...Rg7 44.Kf4 Rf7 45.Kg5 Rf3 46.Ne4 Kd5 47.Nf6 Kd6 48.Nh5 (48.Ra7 Rf5 49.Kg6 Rb5 50.Rd7 Kc6+–) 48...Rb3 49.Ra7 Rb5 50.Kf4 (50.Kg6 Rb4+–) 50...Rf5?? (better is 50...Rh5 51.h4 b5+–) 51.Kg4 Kd5 (51...Rd5 52.Ra4 e5 53.de5 Re5 54.Nf4+–) 52.Nf4 (52.Ra6 Kc6 53.Nf4 Ra5 54.Ra5 ba5+–) 52...Kd4 53.Ne6 Ke5 54.Nf4 Rf6 55.Re7 Kd6 56.Re1 b5 57.Kg5 Rf8 58.Rb1 Kc6 (58...Rb8 59.Rb4+–) 59.g4 (59.Ne6 Rh8 60.Kg4 Rh7 61.Nd4 Kd5 62.Nb5 Rg7 63.Kf4 Rf7 64.Ke3 Re7 65.Kd3 Rg7 66.Nc3 Ke6 67.Re1 Kf7+–) 59...Rg8 (59...Rb8 60.h4+–) 60.Kf5 Rf8 61.Kg5 Rg8 62.Ng6 (62.Kf6 Rf8 63.Ke5 Re8 64.Ne6 Rh8+–) 62...Kc5 (62...Rb8 63.h4+–) 63.h4 b4 64.h5 Rg7 65.Kf5 Rf7 66.Ke6 Rb7 67.h6 b3 68.h7! Rh7 69.Rb3 Kd4 70.Rb5 Ke4 (70...Rh6 71.Kf6 Rh1 72.g5+–) 71.Kf6 Rc7 72.g5 Rc6 73.Kf7 Rc7 (73...Rc1 74.Ne7 Rf1 75.Rf5+–) 74.Ne7 Kf4 (74...Rd7 75.g6 Ra7 76.g7+–) 75.g6 (75.g6 Rc2 76.g7+–) 1–0. GuestNGZX – papal, freechess.org, 2017.

8.a4 ab5 9.ab5 Ra1 10.Ba1 dc4 11.Na3 Bd6 (11...Nbd7 12.Nc4 Be7 13.0-0=) 12.Nc4+= Bc7 13.d4 (13.0-0 Qd5+=) 13...cd4 (13...Nbd7 14.dc5 Nc5 15.0-0=) 14.Qd4 (14.Bd4 0-0+=) 14...Qd4 15.Nd4 0-0 16.0-0 Nd5 (16...Nbd7 17.Nc6+=) 17.Rd1 Nd7 18.Nc6 (18.e4 Nf4 19.Bf3 Ra8+=) 18...N7f6 (18...Bc6!? 19.bc6 Nb8=) 19.Bf3+– Bc6 20.bc6 Rc8 (20...Ra8 21.Ne5+–) 21.Na3 Bd6 (better 21...Bb8!?+–) 22.Nb5+– Rc6 (22...Be7 23.Bf6 Bf6 24.Bd5 ed5 25.c7+–) 23.Nd6 Rd6 24.Bf6 gf6 25.e4 b5 (25...Kf8 26.ed5 Ke7 27.Kf1+–) 26.ed5 e5 (26...ed5 27.Bd5 Kg7 28.Kf1+–) 27.Rb1 Rb6 28.d6! Rd6 29.Rb5 Kg7 30.Kf1 Rd2 (30...Kg6 31.Ke2+–) 31.Ke1 Ra2 32.Rb7 Kg6 (32...Ra1 33.Bd1+–) 33.Bd5 Ra1 34.Ke2 h6 (34...Rh1 35.Bf7 Kf5 36.h3+–) 35.Bf7 (worse 35.Rf7 Rh1+–) 35...Kg5 (35...Kg7 36.Be6 Kg6 37.h4+–) 36.Be6 (36.g3 Ra5+–) 36...f5 (36...Kg6 37.h4 h5 38.Bg8+–) 37.h4! Kh4 (37...Kf6 38.Rb6 e4+–) 38.Rg7 Ra6 (38...Ra2 39.Ba2 f4 40.Kf3 h5 41.Be6 e4 42.Ke4 f3 43.g3) 39.Bf5 Ra2 40.Kd1 Rf2 (40...Ra4 41.g3 Kh5 42.f3 Rd4 43.Kc2 Rc4 44.Kb3 Rc3 45.Kc3 e4 46.Bg4) 41.g3 Kh5 42.Bg4 1–0. DEFFM – GuestCPFJ, freechess.org, 2019.

8.a4 ab5 9.ab5 Ra1 10.Ba1 Be7 11.0-0 d4 (11...dc4!? 12.Bc4 Bd6=) 12.ed4+= Bf3 13.Bf3 (worse is 13.gf3 cd4 14.Qc2 Bd6-/+) 13...cd4 14.d3 (14.Qe2 0-0+=) 14...0-0 15.Nd2 Bc5 (15...e5 16.Qe2 Bb4 17.Bb2+=) 16.Nb3 (16.Qe2+=) 16...Nbd7 (16...Re8 17.Qe2+=) 17.Re1 (17.Nd4 Ne5 18.Nc6 Nc6 19.bc6 Bd6+/–) 17...Qc7 (17...e5 18.Bc6+=) 18.Qe2 (better is 18.Nd4 Bb4 19.Re2+/–) 18...Ra8?? (better is 18...Bb4 19.Rb1 Bd6+=) 19.Ba8+– h6 (19...Qd6 20.Bb2+–) 20.Bc6 (20.Bd4 Bd6+–) 20...Nb8 (20...Qf4 21.Qf3 Qf3 22.gf3+–) 21.Qf3 (21.Nd4 Bb4 22.Ne6 fe6 23.Qe6 Qf7 24.Bf6 Qe6 25.Re6 gf6+–) 21...Kf8 (21...Bb4 22.Re2 e5 23.Ra2+–) 22.Nc5 (better is 22.Nd4!? Bb4 23.Re2 Kg8+–) 22...bc5 23.Bb2 Ke7 (23...Kg8 24.Re2+–) 24.Ra1 (24.Ba3 Nfd7+–) 24...Nc6 25.bc6 Kd6 (25...Kf8 26.Ra8 Ke7 27.Ba3+–) 26.Qg3 e5 (26...Kc6 27.Qg7 Qe7 28.Qh6+–) 27.Qf3 (27.Qg7 Ke6+–) 27...Qb6 (27...Qc6 28.Qg3 g5 29.Qh3+–) 28.Bc1 (28.c7 Qc7 29.Qa8 Nd7+–) 28...Qb3 (28...Qc6 29.Qf5 Qb7+–) 29.Ra7 (29.Bh6 Qb2 30.Rf1 e4 31.Qf4 Kc6 32.Bg7 Nd7 33.Qe4 Kd6+–) 29...Qc3 (29...Qc2 30.g3 Qc1 31.Kg2 e4 32.de4 Qg5 33.c7 Kd7 34.e5 Qg3 35.fg3 h5 36.c8Q Kc8 37.Qa8) 30.Qd1 Ne8 31.Rf7 Kc6 (31...Qa1 32.f4 e4 33.de4 Kc6 34.e5+–) 32.h3 (32.Qa4 Kd6 33.Qd7) 32...Kd6+– 33.Kh2 h5 34.Bg5 (34.Qa4 e4 35.Bf4 Ke6 36.Qe8) 34...Ke6 (34...Qb2 35.Qa4 Qb7 36.Rb7 e4 37.Qd7 Ke5 38.Qd5) 35.Qf3 (35.Qf3 Qc4 36.Re7 Kd6 37.dc4 Nf6 38.Bf6 e4 39.Qf4 Kc6 40.Qc7; 35.Re7 Kf5 36.Qh5 Qd3 37.Bd2 g5 38.Qg5 Ke4 39.Qe5) 1–0. GuestLGTH – GuestLNSZ, freechess.org, 2016.

8.0-0 Be7 9.Bc4 0-0 10.d4 cd4 11.Nd4 Bc5 (11...a6 12.Qb3=) 12.Nd2 (12.Qe2 a6=) 12...Bd4 (12...a6 13.Qe2=) 13.Bd4+= Nbd7 (13...a6 14.Qb3+=) 14.Qb3 (14.Qe2 e5 15.Bc3 Qe7+=) 14...Bd5 (14...e5!? 15.Bc3 Nc5=) 15.Qb2 Bc4 16.Nc4 e5 (better is 16...Qe7!?+=) 17.Ne5+– Ne5 18.Be5 Re8 (18...Nh5 19.Rfc1+–) 19.Rfd1 Qe7 20.Bf6 Qf6 21.Qf6 gf6 22.Rd7 (22.a4 a6 23.Rdb1 Re5+–) 22...a6 23.ba6 Ra6 24.g3 Rea8 (24...Kg7 25.Kg2+–) 25.Rb1 Ra2 (25...Kg7 26.Kg2+–) 26.Rb6 R2a6 (26...Kg7 27.Rbb7 Rf8 28.Kg2+–) 27.Rbb7 Rf8 28.Kg2 Kg7 29.Kf3 Kg6 30.g4 Ra5 31.h4 h5 32.Rd4 hg4 33.Rg4 Kh6 34.Rb6 Rf5 35.Kg2 Kh5 (35...Kh7 36.e4 Rh5 37.Rf6+–) 36.Kg3 Rf2 (36...Kh6+–) 37.Rb5 (37.Kf2?! Kg4 38.Rb4 Kh5+/–) 37...f5 (37...Kh6 38.Kf2 Re8 39.Rf5+–) 38.Rg5 (38.Kf2?! Kg4 39.Rb4 Kh5+/–) 38...Kh6 39.Kf2 f6 (39...f4 40.ef4 f6 41.Rg4+–) 40.Rgf5 Kg6 1–0. DEFFM – GuestQTQK, freechess.org, 2018.

8.Na3 a6!?=.

8.Na3 g6 9.Nc4+= Bg7 10.0-0 0-0 11.Qc2 Nbd7 12.Nd6 Qc7 (12...Bd5!?=) 13.Nb7+= Qb7 14.Rac1 Nd5 15.Bg7 Kg7 16.Qb2 N7f6 17.Ne5 Kg8 18.Bf3 (18.d4 Rfc8+/–) 18...a6+= 19.a4 ab5 20.ab5 Ra4 21.Nd3 (better is 21.Rc4 Rfa8 22.Ra4 Ra4 23.Ng6 hg6 24.Qf6 Nf6 25.Bb7=) 21...Rfa8?? (better is 21...Qa7=) 22.Qf6!+– Nf6 23.Bb7 R8a7 (23...Rb8 24.Bc6+–) 24.Bc6 Ra2 25.Rfd1 c4 (25...Ng4+–) 26.Rc4 1–0. Althoff,Guntram (2115) – Schmenger,Bernd (1820), Hessen–ch MVT, 2005.

8.a4 Bd6 9.Bc4 0-0 10.0-0=.

8.a4 Nbd7 9.0-0 Bd6 (9...Be7 10.Nc3=) 10.Na3 Rc8 (10...0-0 11.Nc4 Bc7 12.d4=) 11.Nc4 Bb8 12.Qb3 (12.a5 0-0+=) 12...0-0 13.Rfd1 (13.d3 Bd5=) 13...Qe7 (13...Qc7 14.Nce5=) 14.d4 (14.a5 Bc7+=) 14...Rfd8 15.Rac1 cd4 16.ed4 (16.Bd4 e5 17.Bc3 Bd5=) 16...Bd5 17.Ba3 Bc4 18.Rc4 (18.Be7? Bb3 19.Bd8 Rd8–+; 18.Bc4?! Bd6 19.Bd6 Qd6=) 18...Bd6 19.Bd6 Qd6 20.Rdc1 Rc4 21.Qc4 Nd5 22.Qb3 N7f6 23.Rc6 Qe7 24.Bc4 (better is 24.Bd3!?=) 24...Nb4-/+ 25.Ne5 Nc6 (better is 25...Re8-/+) 26.Nc6= Qd7 Attacking the isolated pawn on d4 27.Nd8 Qd8 28.Qf3 g6 29.Qf4 Kg7 ½–½. Labahn,Wolfgang – Preiss,Veronika, Paderborn, 1990.

8.Bc4 a6=.

8.Bc4 Bd5 9.Be2 (9.Bf6 A) 9...gf6 10.Qe2 (10.Bd5 Qd5 11.Nc3 Qd3 12.Qb1 Qb1 13.Rb1 Rg8 14.Rg1 a6+=) 10...Bc4 11.Qc4 a6 12.Nc3 ab5 13.Nb5 Na6 14.d4 Rg8+=; B) 9...Qf6 10.Bd5 ed5 11.Nc3 Qe6 12.d4 c4 13.Rb1 Nd7 14.0-0 Bd6=) 9...Bd6 (9...Be7 10.0-0 (10.Nc3 0-0 11.Nd5 Nd5 12.0-0 Bf6 13.d4 a6 14.Qb1 Qe7=) 10...0-0 11.Nc3 a6 12.Nd5 Nd5 13.d4 ab5 14.Bb5 cd4+=; 9...a6 10.ba6 (10.Nc3 Bd6 11.Nd5 Nd5 12.0-0 0-0 13.Qa4 Qd7 14.Ne5 Be5=) 10...Bc6 11.0-0 Bd6 12.Na3 0-0 13.Nc4 Bc7 14.Nce5 Bf3=) 10.0-0 (10.Nc3 0-0 11.Nd5 ed5 12.0-0 Re8 13.Rc1 Qe7 14.a3 a6=) 10...0-0 11.Nc3 Qc7 (11...Bb7 12.d4 a6 13.dc5 bc5 14.Qc2 Nbd7=) 12.h3 (12.Nd5 Nd5 13.e4 Nf4 14.Bc4 a6=) 12...Nbd7 (12...Bb7 13.Rc1 Rc8 14.d4 Nbd7=) 13.d4 (13.Nd5 ed5 14.Qc2 Rfe8=) 13...Rac8 (13...Bb7 14.Rc1 Rfc8=) 14.Nd5 Nd5 (14...ed5=) 15.dc5 Nc5 16.Qd4 f6 17.Rac1 Qb7 18.Rfd1 Rfd8 19.Kf1 Bb8 (19...Qf7 20.Qh4=) 20.Qg4 Ne7?? (better is 20...Qf7+=) 21.Rd8+– Rd8 22.Bf6 g6 23.Rc5! bc5 (23...Nf5 24.Rf5 Rc8 25.Bb2 ef5 26.Qd4+–) 24.Qe6 Kf8 25.Bc4 (25.Bc4 Nd5 26.Bd8+–) 1–0. pzn2pawn (1825) – goriupp (1665), redhotpawn.com, 2016.

8.Bc4 Bd6 9.0-0 0-0 10.d4 cd4 11.Bd4 Nbd7 12.Nbd2 e5 13.Bc3 e4 14.Nd4 Ne5 15.Be2 Ng6 16.a4 (16.Nc4 Nd5 17.Nd6 Nc3 18.Nb7 Qd5+=) 16...Re8 (16...Bh2 17.Kh2 Qc7 18.Kg1 Qc3 19.Rc1+=) 17.Nf5 (17.Nc4 Nd5 18.Nd6 Qd6=) 17...Bc7 (better is 17...Bh2!? 18.Kh2 Qc7 19.Kg1 Qc3-/+) 18.Qc2 Ne7 19.Ng3 Ned5 20.Bb2 (worse is 20.Nde4 Ne4 21.Ne4 Rc8-/+; worse is 20.Nge4 Ne4 21.Ne4 Rc8-/+) 20...Nb4 21.Qb1?? (better is 21.Qd1=) 21...Qd2–+ 22.Rd1 Qc2 23.Qc2 Nc2 24.Rac1 Bg3 25.hg3 Nb4 (better is 25...Rac8!?–+) 26.Rc7-/+ Bd5 27.Ba3?? (better is 27.Bf6 gf6 28.Rd4+=) 27...Nd3! 28.Bd3 ed3 29.Rd3 Be4 30.Rd4 a6 31.ba6 Ra6 32.Bc1 Rb8 33.f3 Bd5 34.Rb4 h6 35.e4 Be6 36.Bb2 Nd7 37.Bd4 Kh7 38.f4 Bg4 39.f5 Rd8 40.Kf2 (40.Bc3!? Raa8 41.Rd4–+) 40...Bd1 41.Rb7?! (41.e5 Bg4 42.e6 fe6 43.Bg7 Kg7 (43...Bf5?! 44.Bf6 Rda8 45.Rd7 Kg6 46.Be5+=; 43...ef5?! 44.Bf6 Re8 45.Rd7 Kg6 46.Rd6+=) 44.Rg4 Kf6–+) 41...Ba4 42.Bb6 Nb6 43.R7b6 Rb6 44.Rb6 f6 45.Ke3 Rd1 46.Rb4 Be8 47.g4 Ra1 48.Rd4 Re1 49.Kf2 Rc1 50.Rd2 Rc4 51.Kf3 Bc6 52.Re2 g6 53.g3 Rc3 (53...Rc3 54.Re3 Rc5–+) 0–1. Van Esbroeck,Dirk – Jaszczowski,Zdzislaw, 33. LSS No Engine Cup Preliminary, 2010.

8.Bc4 Bd6 9.0-0 Nbd7 10.Nc3 Qc7 11.h3 0-0 12.Be2 a6 13.a4 a5 14.Rc1 Ne5 15.Ne5 Be5 16.f4 Bc3 17.Bc3 Ne4 18.Bb2 Qd7 19.d3 Ng3 20.Rf2 Rad8 21.Rc3 (21.d4 Ne4 22.Rf1 Bd5=) 21...Be4 (21...Ne2?! 22.Qe2 f6 23.Qc2=) 22.Bf3 Bf3 (worse is 22...Bd3 23.Rd2 Ne2 24.Re2 (worse is 24.Be2 Be2 25.Rd7 Bd1-/+) 24...Be2 25.Qe2+/–) 23.Rf3 Nf5 24.e4 Nh4 25.Rg3 Qd4 26.Kh2 Qf2?? (better is 26...Ng6=) 27.Rc2 (better is 27.Qc1+–) 27...Qf4 28.Bg7 Ng6 29.Bf8 Kf8 30.Qf3 (30.Qe2!?+/–) 30...Qf3= 31.Rf3 Ne5 32.Rg3 Nd3 33.Rd2 c4 34.Rg5 c3 35.Rc2 Nc5 36.Rg4 (better is 36.Rc5!? bc5 37.Rc3+/–) 36...Na4+= 37.e5 Rd2 38.Rd2 cd2 39.Rd4 d1Q 40.Rd1 Nc3 41.Rd6 Nd5 42.Rd8 Kg7 43.Kg3 Nc3 44.Rb8 Nd5 45.Kf3 Kg6 46.Kg4 f5 47.ef6 Kf6 48.Kf3 Kf5 49.g4 Kg5 50.Kg3 (50.h4 Kf6+/–) 50...e5? (better is 50...Kg6+=) 51.Rf8 Ne3 52.Rf3 Nc4 53.h4 Kg6 54.h5 (54.Rc3 Nd2 55.Rc6 Kf7 56.Rb6 Ne4 57.Kg2 Nc5+–) 54...Kg5? (54...Kg7!?+/–) 55.Rf5+– Kh6 56.Kh4 (better is 56.Rf7 Ne3 57.Re7+–) 56...a4?? (better is 56...Kg7+–) 57.Rf7 a3 58.g5 1–0. Van Esbroeck,Dirk – Lisnevsky,Alexander, SN–2009–0-00164, 2009.

8.Bc4 Bd6 9.0-0 (9.d4 cd4 10.Qd4 0-0=) 9...Nbd7 (9...0-0 10.d4=) 10.d3 0-0 11.Nbd2 e5 12.Qc2 (12.Qa4 Qe7=) 12...Qe7 (12...a6 13.a4=) 13.Rfd1 (13.Nh4 Ne8 14.Nf5 Qf6+=) 13...h6 (13...a6 14.Nh4 g6 15.a4+=) 14.Nh4+= g6?? (better is 14...Ne8 15.Qa4 Qf6+=) 15.Ng6+– Qd8 16.Nf8 Qf8 17.e4 (17.Ne4 Be7+–) 17...h5 (17...a6 18.a4+–) 18.Nf1 (18.Nf3 a6+–) 18...Nh7 (18...a6 19.ba6 Ba6 20.Ne3+–) 19.Qe2 (19.Ng3 Ndf6+–) 19...Ndf6 (19...Nhf6 20.Ng3+–) 20.Ne3 (20.Ng3 Rd8+–) 20...Rd8 (20...Bc8 21.a4+–) 21.a4 (better is 21.Qf3+–) 21...Ng5 (21...Bc8 22.Nf5+–) 22.a5 (22.f4!? Nge4 23.de4 Re8+–) 22...Bb8 (22...Ngh7 23.Nf5+–) 23.ab6 (23.f4 Ne6 24.fe5 Nd7 25.Qh5 Ng7+–) 23...ab6 24.Bc1 (better is 24.f4 Ne6 25.fe5 Nd7 26.Qh5 Ng7+–) 24...Bc8 25.Nf5 Ne6 26.Qf3 Nf4 27.g3 (27.Qg3!? Kh7 28.Bf4 ef4+–) 27...Bf5 28.ef5 (28.gf4?! Qg7 29.Qg2 Qg2 30.Kg2 Be4 31.f3 Bb7+–; 28.Bf4?! Bg4 29.Qg2 ef4= (worse is 29...Bd1 30.Bg5+/–)) 28...Nd3 (28...Qg7+–) 29.Rd3 e4 (29...Rd3 30.Qd3 Bc7 31.Qe3+–) 30.Rd8 Qd8 (30...ef3?? 31.Rf8 Kf8 32.Ra8+–) 31.Qb3 h4 (31...Qe7 32.Bg5 Be5 33.Ra8 Kg7 34.Bf7+–) 32.Bg5 (better is 32.Ra8!? Kh7+–) 32...hg3 33.hg3 Bg3 (33...Be5 34.Bf7 Kh8+–) 34.Qg3 Kf8 35.Bf6 Qf6 36.Ra8 Qd8 37.Rd8 (37.Rd8 Ke7 38.Qd6) 1–0. Labahn,Wolfgang – Labahn,Dieter, Espelkamp, 1982.

8.Bc4 Nbd7 9.0-0 Be7 10.d4 0-0 11.Nbd2 cd4 12.ed4 (12.Nd4 Nc5=) 12...Rc8 (12...a6 13.a4=+) 13.Qb3 (13.Rc1 Rc7=) 13...Re8 14.Rfe1 Nf8 15.Rad1 Nd5 16.a3 Qd6 (16...Nd7 17.Rc1=) 17.Ne5+= Bf6 18.Ne4 Qd8 19.Ng4 (19.Qa4 Re7+=) 19...Be7= 20.Rc1 (better 20.Ne3=) 20...f5-+ 21.Nh6 (21.Nc3 fg4 22.Ne4-+) 21...gh6 22.Qg3 (22.Nc3 Bg5 23.Rc2 Nf4-+) 22...Ng6 23.Nd2 Bg5 24.Red1 (24.Qd3 Nh4 25.Bd5 Qd5-+) 24...Bd2 (better 24...Ndf4!? 25.Re1-+) 25.Rd2 Qg5 26.Qd3?? (26.Rdc2-+) 26...Ngf4 (better 26...Rc4 27.Rc4 Ndf4 28.Qg3 Nh3 29.Qh3 Qd2 30.Rc1 Qb2 31.Qh6-+) 27.Qg3 Qg3 (better 27...Ng2 28.Rdc2 Ngf4-+) 28.hg3 Ng6 29.Re2 Kf7 30.a4 (30.Bd3 h5 31.Rec2 Rc2 32.Bc2 h4-+) 30...h5 31.Rec2 h4 32.gh4 Nde7 (better 32...Nh4 33.Ba3 Nf4-+) 33.g3 Bd5 34.Bd5 Rc2 (better 34...ed5!? 35.Rc7 Ra8-/+) 35.Be6-/+ Ke6 36.Rc2 Rc8 (36...Kd7 37.h5 Nh8 38.Bc1-/+) 37.Re2=+ Kd5 (better 37...Kd7!? 38.h5 Nh8=+) 38.h5= Rc4 The isolani on d4 becomes a target 39.hg6 (better 39.Ba3!? Nc8 40.hg6 hg6 41.Re8 Kd4 42.Bb2 Kd3 43.Bg7=) 39...Ng6=+ 40.Re8 Ra4 41.Rd8 Kc4 42.d5 Kb5 43.Bf6 Kc5 44.d6 Ra1?? (better 44...b5-/+) 45.Ba1+- 1-0. ClayPigeons (2170) - ivo2501 (2190), Rated Blitz game, lichess.org, 2020.

8.Bc4 Nbd7 9.Nc3 Bd6 10.0-0 0-0 11.h3 Rc8 12.a4 Bb8 13.d3 Qc7 14.e4 Rfd8 15.Qe2 Qf4 16.g3 (16.Qe3 Bc7=) 16...Qh6 17.Kg2 Ne5 18.Ne5 Be5 19.f4 Bd4 20.Kh2 (20.f5 ef5 21.Rf5 Qg6=) 20...Ne8=+ 21.f5 Nd6 22.fe6 fe6 23.Bc1 (23.Rad1!?=+) 23...Qg6-/+ 24.Bd2 (24.Bb2 Be5 25.Rf3 Nc4 26.dc4 Rd7-/+) 24...Nc4-+ 25.dc4 Bc3 (25...Be5!? 26.Rg1 Rd7-+) 26.Bc3=+ Be4 27.Rf4 Bf5 28.g4 (28.Qe5 Rd7=+) 28...Bd3-/+ 29.Qe5 Rf8 (better 29...Rd7-/+) 30.Re1? (better 30.Rf8 Rf8 31.Rd1 Rf2 32.Kg3=+) 30...Rf4-+ 31.Qf4 Rf8 32.Qe5 (32.Qc7 Bf1 33.Re4 Qh6-+) 32...Bc4 33.Kg3 (33.Kg1 h5! 34.Qg3 hg4 35.Qg4 Qg4 36.hg4 Rf4-+) 33...Bd5 34.Re3 h6 35.h4 (35.Qc7-+) 35...Qf7 36.Kh3 (36.Qg7 Qg7 37.Bg7 Kg7 38.Ra3-+) 36...Qf1 37.Kg3 (37.Kh2 Qg2) 37…Qg2 0-1. Vysniauskas,Vaidas (1820) - Beliajev,D (2135), 16th Sea Festival Rapid, 2019.

8.Bc4 Be7 9.0-0 0-0 10.d3 Nbd7 11.Nbd2 Rc8 12.Qc2 Bd5 13.h3 Bc4 14.Nc4 Nd5 15.Qd2 Bf6 16.e4 Bb2 17.Nb2 Nc7 18.a4 Qf6 19.Nc4 Rcd8 20.Rfd1 a6 21.a5 Nb5 22.ab6+= Ra8 23.b7 Ra7 24.Na5 e5 25.Qc2 Rd8 26.Rdb1 h6 27.Qc4+/– (27.Qc4 Rb8 28.Qd5+/–) 1–0. pierre – olek, internet, 2008.

8.0-0 dc4 9.Na3 0-0 10.Nc4 Bc7 (10...Be7 11.Qa4 (11.d4 a6 12.dc5 Bc5 13.ba6 Ra6 14.Qb1 Nbd7=) 11...a6 12.d4 Nfd7 13.Rfc1 Bd5 14.Qb3 ab5=) 11.d4 cd4 (11...Nbd7 12.Qa4 cd4 13.Bd4 Qb8 14.h3 e5=) 12.Bd4 (12.Qd4 Qd5 13.Qh4 Nbd7 14.a4 Rfd8+=) 12...Nbd7 13.Rc1 Qb8 14.g3 (14.h3 e5=) 14...e5 15.Bc3 Rd8 16.Qc2 Be4 17.Qb2 Re8 18.Rfd1 Nd5 (18...Bd5 19.a3+=) 19.Ng5 Nc3 20.Rd7 Ne2 21.Qe2 Bf5 (21...Bg6!? 22.Na5 ba5 23.Rcc7 Rc8+/–) 22.Rf7+– Bg6 23.Rd7 Rd8 (23...Bd8 24.Nf3 e4 25.Nfe5 Re5 26.Rd8 Qd8 27.Ne5+–) 24.Qg4 Rd7 25.Qd7 Be8? (25...Qd8 26.Qe6 Kh8 27.Ne5 Be5 28.Qe5 Qg8+–) 26.Qe6 Kh8 27.Qe7 Bh5 28.Ne6 Qg8 29.Nc7 Rf8 30.Ne5 Bf7 31.Ne8! Ba2 (31...Be8 32.Rc8; 31...Re8 32.Qd7) 32.Nd6 Bd5 33.g4 Be6 34.g5 g6 35.Rc7 a5 36.ba6 b5 37.a7 (37.a7 Bd5 38.Ng6 Qg6 39.Qf8 Bg8 40.Nf7 Qf7 41.Rf7 b4 42.Qg7) 1–0. Buss,Michael – Confente,Giuseppe, corr ICCF TT/40–6, 1990.

8.0-0 dc4 9.Na3 c3 10.Bc3 0-0 11.Nc4=.

8.0-0 dc4 9.Na3 Nbd7 10.Nc4 Bc7 11.Qc2 0-0 12.Rfd1 Qe7 13.d3 Nd5 (13...a6 14.a4=) 14.d4 f5 (14...a6 15.ba6 Ba6 16.dc5 Nc5 17.Bd4=) 15.a4 Rac8 16.Nfe5 (16.a5 ba5 17.dc5 A) worse is 17...Qc5 18.Ba3 Nb4 19.Bb4 (19.Rd7?! Nc2 20.Bc5 Na1+=) 19...ab4 20.Rd7+/–; B) 17...Nb4 18.Rd7 Qd7= (18...Nc2?? 19.Re7 Rf7 20.Rf7 Kf7 21.Nfe5 Kg8 22.Rc1+–)) 16...Ne5 17.de5 Qg5 18.Bf1 Rcd8 19.f4 Qe7 20.g3 (20.a5 Nb4 21.Qe2 Rd1 22.Qd1 Rd8=) 20...Kh8 (20...Nb4 21.Qe2=) 21.Bg2 Rd7 (21...Nb4 22.Qe2 Bg2 23.Kg2=) 22.Qe2 Rfd8 23.Rd2 a6 24.h4 (24.e4 Nb4=) 24...g6 (24...ab5!? 25.ab5 Qe8=) 25.Nd6+= Kg8 (25...ab5 26.Nb7 Nf4 27.ef4 Rd2 28.Qb5 R8d3+=) 26.Nb7 (26.ba6!? Bc6 27.e4+/–) 26...Nf4= 27.ef4 Rd2 28.Qc4 (28.Qf1 Rb2 29.Nd8 Bd8 30.ba6 Rb4+=) 28...Rg2 (28...Rb8 29.ba6 Rb2 30.Qc3 Rg2 31.Kg2=) 29.Kg2 Rd2 30.Kh3 (30.Kg1 Rb2 31.ba6 Rb4+=) 30...Rb2= 31.ba6 Bb8?? (better is 31...Rb4 32.Qc2 Qe8+=) 32.Rd1+– h6 (32...Rb4 33.Rd8 Kg7+–) 33.Rd8 Kg7 34.Qd3 g5 35.hg5 hg5 36.fg5 Kg6 37.Rg8 Kf7 (37...Kh7 38.Rb8 Qf7 39.Qf3+–) 38.Rb8 (38.Rb8 Kg6 39.Rg8 Kh7 40.a7 Kg8 41.a8Q Kg7 42.Qdd8 Qd8 43.Nd8+–) 1–0. Bulcourf,Carlos (2220) – Serrat,P, Buenos Aires Stentor, 1977.

8.0-0 dc4 9.Bc4 Bd5 (better 9...Nbd7=) 10.Bf6+– Qf6 11.Bd5 ed5 12.Nc3 Qf5 13.Nh4 Qh5?? (better 13...Qd3 14.Qf3 Nd7+–) 14.Qh5+– (14.Qh5 0-0 15.Qd5+–) 1–0. Ddgs – Shatri, internet, 2019.

8.0-0 Qc7 9.d4 dc4 (9...Nbd7 10.cd5 Bd5 11.Nc3=) 10.Nbd2+= (worse is 10.Bc4 cd4 11.Qd4 Bf3 12.gf3 Bh2 13.Kg2 Bd6-/+) 10...Ng4 Pawn h2, live or die! 11.Ne5 (11.h3 c3 12.Bc3 Nh2 13.Nh2 Bh2 14.Kh1 0-0+=) 11...Ne5 (11...c3 12.Bc3 A) worse is 12...Be5 13.de5 (worse is 13.Bg4 cd4 14.Bd4 Bh2 15.Kh1 Bd6+=) 13...Nh6 14.Nc4+/–; B) worse is 12...Ne5 13.de5 Be7 14.Bd3+=; C) 12...cd4 13.ed4 Nh2 14.Kh2 Qc3+–) 12.de5= Be7 (12...Be5? 13.Be5 Qe5 14.Nc4+–) 13.Nc4 0-0 14.Nd6 Rd8 15.Bf3 Bd6 16.ed6 Qc8 (16...Rd6? 17.Bb7 Rd1 18.Rfd1+–) 17.Bb7 Qb7 18.Qg4 Do you see the mate threat? 18...f5 19.Qg5 (19.Qg3 a6 20.a4 Rd7+=) 19...Rd6 20.Rad1 Rd7 21.e4 Qc8 (21...fe4 22.Qg4 h6 23.Qe6 Kh7 24.Rd7 Nd7 25.Qe7+–) 22.Bg7! Threatening mate... how? 22...Qe8 (22...Rg7 Theme: Deflection from d8 23.Rd8 A double attack) 23.Ba1 (better is 23.Be5!? Qg6 24.Qe3+–) 23...Qg6+= 24.Qf4 (better is 24.Qe3 fe4 25.f3+/–) 24...fe4? (24...Qg4!? 25.Qg4 fg4+=) 25.Qe5 (better is 25.Be5 Qh5 26.f3+–) 25...Kf7+/– 26.f4! Qf5 27.Qg7 (better is 27.Qh8!? Rd4+–) 27...Ke8 28.Qg8 Qf8 29.Qe6 The passed pawn on f4 quickly leads to threats 29...Qe7 30.Qg8 (better is 30.Qf5!? c4 31.Rde1 Qc5 32.Qc5 bc5+–) 30...Qf8 31.Qg4 (31.Qg4 a6 32.f5+–) 1–0. Vogel – Nabben, corr, 1971.

8.0-0 Qc7 9.cd5 Bd5 10.Bf6 gf6+=.

8.0-0 Qc7 9.Bf6 gf6 10.cd5 Bd5+=.

8.0-0 Qc7 9.h3 Nbd7 10.d3 (10.cd5 ed5 11.Nc3 0-0=) 10...dc4+= 11.dc4 0-0 12.Nbd2 Ne4 (12...a6 13.Qc2+=) 13.Ne4= Be4 14.Nd2 (14.Bd3 Bd3 15.Qd3 Rfd8=) 14...Bb7 15.Qc2 Bh2 (15...a6 16.Rfd1=) 16.Kh1 Be5 17.Bf3 (17.Be5 Ne5 18.f4 Ng6=) 17...Bf3 (17...Rfd8 18.Rfd1=) 18.Nf3 Bb2 19.Qb2 Rad8 (19...Rfd8 20.Rfd1=) 20.a4 (20.Rad1 e5=) 20...e5 21.Qc2 h6 (21...f5 22.e4=) 22.Rfd1 (22.a5 f5=) 22...Rfe8 23.Nd2 (23.a5 Nf6=) 23...Nf6 24.Ne4 Ne4 25.Qe4 Qc8 (25...Qe7 26.Kg1=) 26.Rd5+= Rd5 27.Qd5 Qf5 28.Kg1 Qc2 29.Qd7 Re6 30.Qa7 Qc4 31.Qd7 (31.Qa8 Kh7=) 31...Qc3 32.Rd1 Qb4 33.Qd8 (33.Rd6 Rd6 34.Qd6 Qa4 35.Qb6 c4 36.Qb8 Kh7 37.Qe5 Qb4+/–) 33...Kh7 34.Qd3 e4 35.Qc2 f5 36.Qa2 (36.Kh2 Rf6=) 36...Re8 (36...Rf6 37.Rd8 c4 38.Rc8+=) 37.Qf7 Qa4 38.Rd7 (38.Qf5!? Kh8 39.Qd7=) 38...Qa1+= 39.Kh2 Qe5 40.g3 Rg8 (40...Re6!?-/+) 41.Re7= Qb2 42.Qf5 Kh8 43.Re6 Qb5 44.Qe5 Threatening mate: Rxh6 44...Rf8?? (better is 44...Kh7=) 45.Rh6+– Kg8 The mate threat is Rxf2 46.Qe6 (better is 46.Qd5 Rf7 47.Rd6+–) 46...Rf7+= 47.Qc8 Rf8 48.Qe6 (48.Rh8 Kh8 49.Qf8 Kh7 50.Qf5 g6 51.Qe4 c4+=) 48...Rf7= 49.Rh4 Qd7 50.Qa2 (50.Qd7 Rd7 51.Re4 Kf7=) 50...b5 (50...Qc6 51.Qc2+=) 51.Kg2 (better is 51.Qa8!? Rf8 52.Rh8 Kh8 53.Qf8 Kh7 54.Qc5=) 51...Qc6+= Black prepares c4 52.Qe2 Rf6 (52...Rf5+=) 53.g4 (better is 53.Qc2!?+=) 53...Rh6-/+ 54.Rh6 gh6 55.Qd1 (55.Qc2 Kf7-/+) 55...c4 56.g5 (56.Qd8!? Kf7 57.Qh8–+) 56...hg5–+ 57.Qh5 (57.Qg4 Kh7–+) 57...c3 (57...Kg7 58.Kf1 Qg6 59.Qg4–+) 58.Qg5 Kf7 Black gets deadly initiative 59.Qf5 Ke7 60.Qe5 Kd7 61.Qd4 (61.Qg7 Kd6 62.Qf8 Kd5 63.Qf7 Kc5 64.Qa7 Kc4 65.Qa2 Kd3–+) 61...Kc8 (61...Ke6 62.Qd1 c2 63.Qc1–+) 62.Qh8 (62.Qd1 c2 63.Qc1 b4–+) 62...Kb7 63.Qg7 Qc7 Do you see the mate threat? 64.Qg5 Kb6 65.Qf6 Ka5 66.Kf1 (66.f3 b4–+) 66...Qc4 67.Ke1 Qd3 68.h4 (68.Qd4 b4 69.h4 Qb1 70.Ke2 Qc2 71.Ke1–+) 68...Qd2 (68...Qd2 69.Kf1 Qd1 70.Kg2 c2 71.Qc3 Ka4–+) 0–1. Schulze,Harald (2125) – Kraft,Hans (2080), Regionalliga NO, 2002.

8.0-0 Nbd7 9.d3 Qc7 10.Nbd2 Ng4 11.h3 Bh2?? (better is 11...Ngf6=) 12.Kh1+– h5 13.Qe1 (13.Bg7 Rh7 14.Bc3 Bg3+–) 13...Ndf6 (13...Bd6 14.cd5 Bd5 15.e4+/–) 14.Bf6 (14.g3 Bg3 15.fg3 Ne3=) 14...gf6+/– 15.Bd1 (better is 15.cd5!? Bd6 A) 16.hg4? hg4 17.Kg1 Bh2 (17...gf3?! 18.Nf3 Bh2 19.Kh1–+) 18.Kh1 Bd5–+; B) 16.de6 fe6 17.d4+/– (17.hg4 hg4 18.Kg1 Qh7 19.Nh4 Qh4 20.f3 Qh2 21.Kf2 Bg3)) 15...Be5= 16.Rc1 (worse is 16.Ne5 Qe5 (16...Ne5?! 17.cd5 Bd5 18.Qe2=) 17.Bg4 hg4–+) 16...Ke7 (better is 16...d4!?=) 17.cd5+/– Bd5 18.d4 (worse is 18.Ne5 Qe5 19.f4 Qe3-/+) 18...Bd6 19.e4 (19.hg4 hg4 20.Kg1 Bh2 21.Kh1 gf3 22.g3 Bg3 23.Kg1 Bh2 24.Kh1 Be5 25.Kg1 Rag8) 19...Bb7 (19...Ba2? 20.Rc2+–) 20.g3 (20.hg4?? hg4 21.Kg1 Bh2 (21...gf3?! 22.g3–+) 22.Kh1 gf3 23.Nf3 Bf4 24.Kg1 Bc1–+) 20...Qd8 (20...Nh6 21.Be2+=) 21.hg4 hg4 22.Nh4 cd4 23.f4 (23.Bg4!? a6 24.ba6 Ra6 25.Rc4+/–) 23...f5 (23...gf3 24.Bf3 Qd7 25.Nc4=) 24.Kh2 (24.Kg1 Bc5 25.Bb3 d3 26.Rc5 Qd4 27.Qf2 Qc5 28.ef5 ef5 29.Re1 Kf8 30.Qc5 bc5+=) 24...Bc5 (better is 24...fe4!? 25.Ne4 Ba3+=) 25.Bb3+/– Qd7 (25...fe4!? 26.Ne4 Rc8+/–) 26.ef5 Qb5 27.Bc4 (27.fe6!? f6 28.Bc4+/–) 27...Qc6+/– The mate threat is Qg2 28.Qe2 White fights for the Initiative 28...Rad8 29.Bd3 (29.Qg4?? Qg2) 29...Rh6 (29...a6 30.Be4 Qc8 31.fe6 Be4 32.ef7 (32.Qe4?! Qe6 33.Qb7 Kf8=) 32...Kf7 33.Ne4+–) 30.Rfe1 (30.Be4 Qc8+–) 30...Rdh8 (30...Rg8 31.Be4 Qc7 32.fe6 Rh4 33.gh4 Qf4 34.Kg2+/–) 31.Be4+– Qc7 (31...Qc8 32.Qg4 Be4 33.Ne4+–) 32.Qg4 Be4 (32...Bc8 33.Nb3 Kf8 34.Nd4+–) 33.Re4 (33.Ne4 Kd8+–) 33...Kf8 (33...Qd6 34.fe6 fe6 35.Qg7 Kd8 36.Qa7+–) 34.fe6 Qe7 35.Ndf3 d3 (35...Rg8 36.Qf5 Re6 37.Rce1 Re4 38.Re4+–) 36.f5 (36.Ng5 f6 37.Nf7 f5 38.Nh8 Qh4 (38...fg4?? 39.N8g6 Kg7 40.Ne7 Be7 41.Rd1+–) 39.gh4 fg4+–) 36...d2 (36...fe6 37.Rd1 Qg7 38.Qf4+–) 37.Nd2 (37.Rd1 fe6 38.Kg2 Qb7+–) 37...Rh4 38.gh4 (38.Qh4 A pinning theme 38...Rh4) 38...Qd6 Theme: Double Attack 39.Kh3 Qd2 40.Rd1 (40.e7 Ke8 41.Rd1 Qc3 42.Qg3 Qg3 43.Kg3 Rg8 44.Kf3 f6 45.Rd8 Kf7 46.Rg8 Be7+–) 40...Qc3 41.Qg3 Qf6 (41...Qg3 42.Kg3 fe6 43.Rd8 Kg7 44.Rg4 Kh7 45.Rd7 Kh6 46.Rg6 Kh5 47.Re6+–) 42.Qb8 (better is 42.Rg4 Qf5 43.Rd8 Ke7 44.Qc7 Ke6 45.Qd7 Kf6 46.Qf5 Kf5 47.Rh8 Bd6+–) 42...Kg7 43.Rg4 (worse is 43.Qa7 Rf8 44.Rg4 Kh8+–) 43...Kh7 44.Qa7 Qf5 (44...Be7 45.Rdg1 Rd8 46.Rg5 (46.Qb6 Qf5 47.Qc7 Rd3 48.R1g3 Qf1 49.Kh2 Rd2 50.Rg2 Bd6 51.Qd6 Rd6 52.Rg7 Kh6 53.Rf7 Qc4–+) 46...Rd3 47.R1g3 Rg3 48.Kg3 Qc3 49.Kg2 Qc6 50.Kg1 Bc5 51.Kh2 Bd6 52.Rg3 Qc2 53.Kg1 Qc5 54.Kg2 Qc2 55.Kg1 Qc5 56.Kh1 Qc1 57.Rg1 Qc6 58.Rg2 Qc1 59.Rg1 Qc6 60.Rg2 Qc1 61.Rg1=) 45.Qf7 Qf7 46.ef7 Rf8 47.Rd5 (better is 47.Rd7+–) 47...Kh6 (47...Be3 48.Rg3 Bc1+–) 48.Rf5 Ra8 49.Rc5! bc5 50.Rg8 (50.Rg8 Rf8 51.Rf8+–) 1–0. Roczniak,Jan – Mielnicki,E, Poland (year?).

8.0-0 Nbd7 9.d3 e5 10.cd5= Nd5 11.Nc3 N7f6 12.Nd5 Nd5 13.e4 Nf4= 14.Be5 0-0?? 15.g3+= Ng6 16.Bc3+/– f5 17.Qb3 Kh8+/– 18.e5 Bf3 19.Bf3+– Ne5 20.Ba8 Qa8 21.Be5 Be5 22.Rae1 Bd4 23.Re7 a6? 24.ba6 Qa6 25.Rfe1 Qa8 26.Qb6 Qf3? 27.R1e2 h5 28.Qg6 Rb8 29.Re8 (29.Re8 Re8 30.Re8) 1–0. pierre – ramlall, internet, 2009.

8.0-0 Nbd7 9.cd5 ed5 10.Nc3=.

8.Nc3 Nbd7 9.Qb3 Qe7 10.a4 Rd8 11.a5 Bb8 12.a6 (better is 12.cd5!? ed5 13.a6=) 12...Ba8 (12...dc4!? 13.Qc4 Bf3 14.gf3 Ne5+=) 13.d4 (13.cd5 ed5 14.d4 0-0=). Pietrzak,Janusz – Zier,L, corr ICCF EU–M–GT–186, 1988.

8.d3 0-0 9.Qc2 Qc7 10.Nbd2 Nbd7 11.0-0 Ng4 12.g3 Nge5 13.cd5 Bd5 14.e4 Bb7 15.Rac1 Nf3 16.Nf3 Ne5 17.Ne5 Be5 18.d4 Bf6 19.e5 Be7 20.Bd3 Bd5 21.Bh7 Kh8 22.Be4 c4 23.Bc3 Bg5 24.f4 Be7 25.Bd5 ed5 26.Qf5 g6 27.Qg4 Kg7 28.f5 Rg8 29.f6 Kf8 30.fe7 Qe7 31.Rf6 Qd7 1–0. ArgosZgZ – wcd44, lichess.org, 2018.

8.d3 Nbd7 9.Nbd2 Qc7 10.d4 0-0 11.dc5 Nc5 12.cd5 (12.Bf6 gf6 13.cd5 Bd5=) 12...Nd5=+ 13.e4 (better 13.Nc4!? Be7 14.0-0=+) 13...Nf4-/+ 14.e5 (14.0-0!?-/+) 14...Ncd3-+ (14...Ng2 15.Kf1 Nf4 16.ed6+/-) 15.Bd3 Nd3 16.Ke2 Ne5 (16...Nb2 17.ed6 Bf3 18.gf3 Qd6 19.Qb3 Qe5 20.Ne4-+) 17.Rc1 Qb8 18.Re1 (18.Be5 Be5 19.Ke1 Bf4-+) 18...Nf3 19.Nf3 Bf3 (19...Bf4 20.Rc3-+) 20.gf3 (better 20.Kf3!? Bf4 21.Rc4-/+) 20...Be5-+ 21.Qb3 Bb2 22.Qb2 Qf4 23.Rg1 g6 24.Rcd1 Rfd8 25.Qc3 Rac8 (25...Rdc8 26.Rg4 Qh2 27.Qb3-+) 26.Rd8 Rd8 27.Rd1 (27.Rg4 Qh2 28.Rc4 Qd6-+) 27...Rd1 28.Kd1 Qh2 29.Ke2 Qd6 30.Qc8 Kg7 31.Qc3 e5 32.f4 (32.a4 h5-+) 32...Qd4 33.Qc7 Qf4 34.Qa7 (34.a4 Qa4 35.Qe5 Kh6-+) 34...Qc4 35.Kf3 Qb5 36.Qc7 Qd5 37.Kg3 b5 (37...Qa2?! 38.Qe5 Kh6 39.Qf4 g5 40.Qf6 Kh5 41.Qb6-+) 38.Qc3 (38.Qe7 Qd3 39.Kg2 Qe4 40.f3 Qe2 41.Kg3 Qe1 42.Kh3 b4-+) 38...h5 39.Qb2 Kf6 40.f4 (40.Qa3 e4 41.Kh2 h4-+) 40...Qd4 41.Qb5 ef4 42.Kf3 (42.Kg2 Qd2 43.Kg1 Qa2-+) 42...Qe3 43.Kg2 f3 44.Kf1 Qe2! 45.Qe2 fe2 46.Ke2 Ke5 47.Kd3 Kd5 48.Kc3 (48.Ke3 g5-+) 48...Kc5 (48...h4 49.Kd3 h3 50.Kc2-+) 49.Kb3 (49.Kd2 g5-+) 49...Kb5 50.a4 Ka5 51.Kc4 Ka4 (better 51...h4 52.Kd5 h3 53.Ke5-+) 52.Kd4 Kb4 53.Ke4 (53.Ke5 Kc5-+) 53...Kc4 54.Kf4 Kd4 55.Kg5 Ke4 (55...Ke5!? 56.Kh4 Kf4 57.Kh3-+) 56.Kf6 h4 57.Kf7 h3 58.Kf6 h2 59.Kg5 h1Q (59...h1Q 60.Kf6 Qh8 61.Ke6 Qe5 62.Kd7 Kd5 63.Kc8 Kc6 64.Kd8 g5 65.Kc8 Qc7) 0-1. Antares_Sco (1790) - sepultura123 (2170), Hourly Blitz Arena, lichess.org, 2018.

8.d4 0-0=.

8.d4 cd4 9.Bd4 0-0 (9...Nbd7 10.cd5 e5 11.Bb2 Rc8 12.0-0 Qc7 13.Nbd2 e4 14.Rc1=) 10.0-0 (10.cd5 Nd5 11.0-0 a6 12.e4 Nf4 13.Nc3 f5 14.e5=) 10...Nbd7 11.cd5 Nd5 (11...Bd5 12.Nc3 Bb7 13.Bf6 Nf6 14.Rc1=) 12.Nbd2 Rc8 (12...e5 13.Bb2 Re8 14.Nc4=) 13.Rc1 (13.Nc4 Bc5 14.Rc1=) 13...Qe7 (13...Rc1 14.Qc1=) 14.Qb3 (14.Nc4=) 14...e5 15.Ba1 Nc5 16.Qb1 Bb8 17.Rfd1 e4 18.Nd4 f5 19.N4b3 (19.Bc4 Rcd8=) 19...Kh8 20.Nc5 bc5 21.a4 f4 22.Qe4 (worse is 22.Ne4 Ne3 23.fe3 Be4-/+ (23...Qe4? 24.Qe4 Be4 25.Rd7+–)) 22...fe3 23.fe3 Qe4 (better is 23...Qg5 24.Bf3 Rfe8=) 24.Ne4+– Ne3 (24...c4!? 25.Bd4 Ne3 26.Be3 Be4 27.Rc4 Bf5+–) 25.Rd7 Be4 26.Rg7 Nf5 (26...Nd5 27.Ra7 Rf6 28.Rf7+– (28.Bf6?! Nf6 29.Rf7 Be5+–)) 27.Rc7 Nd4 28.Bd4 (28.Bd4 cd4 29.Rc8+–) 1–0. Saarenpaa,Toivo – Kekki,Jorma (2185), Jyvaskyla op, 1999.

8.d4 Nbd7 9.Nbd2 (9.cd5 ed5 10.dc5 bc5=) 9...Rc8 (9...0-0 10.0-0=) 10.Ne5 (10.0-0 0-0=) 10...Bb8 (10...cd4 11.ed4 dc4 12.Nec4+=) 11.f4 (11.Nd7 Nd7 12.0-0 dc4 13.Nc4 Qg5=) 11...dc4 (11...cd4 12.ed4 dc4 13.Bc4+=) 12.Ndc4 (12.Nec4 0-0 13.0-0 Qe7=) 12...Nd5 (12...cd4 13.Qd4 Ne5 14.Qd8 Rd8 15.Ne5=) 13.a4 (13.Nd7 Qd7 14.dc5 bc5+=) 13...N7f6 (13...cd4!? 14.Qd4 Ne5 15.Ne5 f6=) 14.0-0 Ne4 (14...0-0 15.dc5 bc5 16.Rc1+=) 15.dc5 (15.Bf3 Nd6+=) 15...Rc5 (15...Nc5 16.a5+=) 16.Ba3 (16.Qd4 Be5 17.Ne5 Nd6+/–) 16...Nec3 (16...Rc8 17.Bd3 Nc5 18.Bc5 Rc5 19.Qg4=) 17.Qc2 White is in command 17...Ne2 (17...Rc8 18.Rac1+=) 18.Qe2 Nc3? (better is 18...Rc8!?+=) 19.Qg4+– Rc4 (19...0-0 20.Bc5 bc5 21.Rf2+–) 20.Nc4 Rg8 (20...Qf6 21.Bb2 h5 22.Qh3+–) 21.Bb4 (21.Rac1 Ne4+–) 21...h5 (21...Nd5 22.Rfd1 Qf6 23.Ba3+–) 22.Qh5 Qd3? (22...Qd5 23.Qd5 ed5 24.Nd2+–) 23.Bc3 (better is 23.Ne5!? Qe3 24.Rf2 Be5 25.fe5 Ne2 26.Qe2 Qd4+–) 23...Qc3 24.Rac1 Qd3 25.Rf2 g6 26.Qg5 Qe4 (26...Bc7 27.Ne5 Qd6 28.Qf6+–) 27.Rd1 (27.a5!? ba5 28.Na5 Rf8+–) 27...Bd5 28.Qf6 (better is 28.Rd4 Qf5 29.Qf5 gf5 30.Rc2+–) 28...Qc4+= 29.Qd4 (29.Qa1 Qb3 30.Rc1 Ke7+=) 29...Qd4 30.Rd4 Ke7 (30...Bd6 31.Rfd2 Bc5 32.R4d3-/+) 31.e4 Bb7 (31...Bb3 32.Rb4 Bd1 33.Rd2=) 32.Rfd2 Bf4 (32...Bc8!? 33.e5 g5+=) 33.Rd7+= Kf8? (better is 33...Kf6 34.Rf2 Ke5 35.Rb7 Be3+=) 34.Rd8?? (better is 34.Rf2 Bc8 35.Rd8 Kg7 36.Rg8 Kg8 37.Rf4+–) 34...Kg7–+ 35.Rg8 Kg8 36.Rd8 (36.Re2 Be5–+) 36...Kg7 37.Rd7 Be4 38.Ra7 Bd3 (38...Bb8 39.Rd7–+) 39.Kf2 Bd6 40.Ke3 Bf1 (40...Bc4 41.Kd4 Bd5 42.g3–+) 41.Kf2 (41.Kf3 Bc4–+ (41...Bh2?! 42.Kf2 Bd3 43.g3-/+)) 41...Bc4 42.g3 (42.h4 e5–+) 42...e5 (42...Bc5 43.Kf3–+) 43.Ke3 (43.Kf3 Kf6–+) 43...Kf6 44.Ra6 (44.Ra8 Bc5 45.Ke4 Ke6 46.Re8 Be7–+) 44...Bc5 45.Ke4 (45.Kf3 Bd3 46.Kg4 Be2 47.Kh3 e4–+) 45...Ke6 46.g4 (46.Kf3 Bd5 47.Kg4 Bg2–+) 46...Be2 (better is 46...f5 47.Kf3 f4–+) 47.h3 (47.g5 Bc4 48.Ra7–+) 47...f5 (47...f5 48.gf5 gf5) 0–1. Wessel,Volkmar – Muller,Alfred, Landes–Einzelmeister, 1991.

8.cd5 ed5 9.0-0 Qe7 (9...0-0 10.Qc2=) 10.d3 (10.Nc3 0-0=) 10...0-0 11.Nbd2 a5 (11...a6 12.a4+=) 12.a4 (12.Rc1 Nbd7=) 12...Nbd7 13.Re1 (13.Qc2 Rae8=) 13...Ne8 (13...Rfe8 14.Rc1=) 14.Qb3 (14.Rc1 Rc8=) 14...Kh8 (14...Rd8 15.Rac1=) 15.e4 d4 ½–½. Gielow,Manfred – Lemke,Hans Hermann, corr GER–H/1509, 1985.

8.Ne5 Qc7 9.f4= 0-0 10.0-0=.

8.Ne5 Qc7 9.f4 Nbd7 10.Nd7 Qd7 11.0-0 dc4 12.Na3 Rd8 13.Nc4 Bb8 14.a4 0-0 15.d3 Ne4?? (better is 15...Nd5=) 16.Qd2?? (better is 16.de4 Be4 17.Qe1+–) 16...Qe7 (better is 16...Nd2 17.Nd2 a6–+) 17.Na5?? (17.Qe1 Nd6+=) 17...Qe8 (17...Nd2 18.Nb7 Qb7 19.Rfd1–+) 18.Bg4?? (18.Qc2 ba5 19.de4 e5+=) 18...Nd6 (better is 18...Nd2 19.Nb7 Nf1 20.Rf1 Rd3–+) 19.Rfe1?? (19.Nb7 Nb7 20.Qc3+/–) 19...c4?? (better is 19...ba5 20.Qc3 f6–+) 20.Bc3?? (better is 20.Qc3 e5 21.Nb7 Nb7 22.Qc4+/–) 20...cd3?? (better is 20...ba5 21.Ba5 Ne4 22.Qb4 Rd3 23.Qc4–+) 21.g3?? (21.Nb7 Nb7 22.Bf3 Qe7+=) 21...Bg2 (better is 21...ba5 22.Qd3 Ne4–+) 22.Bb2? (22.Qg2 ba5 23.Red1 Nf5=) 22...Nb7 (22...Bd5!? 23.Nb3 Nc4 24.Qc3 Nb2 25.Qb2–+) 23.Ra3 (better is 23.Kg2 Na5 24.Qc3+=) 23...Be5?? (better is 23...Na5 24.Qc3 f6 25.Kg2 e5-/+) 24.Nc6?? (better is 24.Be5 Na5 25.Qg2+– (25.Kg2 Nc4 26.Qb4 Na3 27.Qa3 a6+/–)) 24...Nd6?? (better is 24...Bb2 25.Qb2 Bc6 26.bc6 Qc6–+) 25.Ba1 (25.Ba1 Bc6 26.Rd3 Ba1 27.bc6 Qc6 28.Ra1-/+; 25.Kg2 Nc4 26.Qb4 Na3 27.Ba3 Bd6+–; 25.Be5?! Bc6 26.Bd6 Rd6 27.bc6 Qc6 28.Rd3 Rd3 29.Qd3 Qa4+–; 25.Nd8?! Bb2 26.Rd3 Bd5+–) 1–0. Bulcourf,Carlos (2295) – Moccero,Eduardo, Buenos Aires PROFMDA, 1993.

8.Ne5 Qc7 9.f4= Nbd7 10.Nd7 Qd7 11.0-0 dc4 12.Na3 (12.Bc4 Be7=) 12...Rd8 (12...Be7 13.Nc4 0-0 14.Ne5=) 13.Nc4 Bb8 (13...Be7 14.Qa4=) 14.a4 (14.Qa4 0-0 15.Bf6 gf6+=) 14...0-0 (14...Bd5 15.Bf3=) 15.Bf3 (15.Bf6 gf6 16.Bf3 Bd5 17.Bd5 Qd5+=) 15...Ne4= Increases the pressure on the backward pawn 16.d4 Qe7 (16...Bd5 17.Rc1=) 17.Qc2+= f5 (17...Nd6 18.Bb7 Qb7 19.dc5 bc5 20.Na5+=) 18.dc5 (18.Rfd1 Bd5+=) 18...Nc5 (18...Qc5? 19.Ba3 Qc7 20.Bf8 Rf8 21.Rac1+–) 19.Ne5 (19.Bb7 Qb7 20.Rfd1 Ne4=) 19...Be5= 20.Be5 Ne4 (20...Bf3!? 21.Rf3 Ne4=) 21.Rfd1+= Rc8 22.Qb2 Bd5 (22...Rfd8 23.Rd8 Rd8 24.Rc1=) 23.a5 Rc4 (23...Rfd8 24.ab6 ab6 25.Qa3+=) 24.ab6 ab6 White gets strong play along the open a–file 25.Ra6 Rfc8 26.Qa1 Qh4 (26...Nf6!?+=) 27.Ra7+/– (27.Bg7 Qf2 28.Kh1 Qe3 29.Be4 Qe4 30.Rd5 Qd5–+; 27.Rb6? Qf2 28.Kh1 Qe3 29.Be4 Be4–+ (29...Qb6?! 30.Bd5 ed5 31.Bg7–+; 29...Re4?! 30.Rc6 Bc6 31.bc6-/+; 29...fe4?? 30.Qa7 R4c7 31.Bc7+–; worse is 29...Qe4 30.Rd5 Qd5 31.Rb8 Rb8 32.Bb8–+)) 27...Qf2? (better is 27...Nf6 28.Bf6 gf6 29.Bd5 ed5+–) 28.Kh1+– Threatening mate... how? 28...Rc3 (28...Nf6 29.Bf6 R4c7 30.Bd5 ed5 31.Rc7 Rc7 32.Qa8 Kf7 33.Qd5 Kg6+–) 29.Rg7 Kf8 30.Be4 Be4 (30...fe4 31.Bc3 Rc3+–) 31.Bc3 Rc3 32.Qc3 (32.Qc3 Qf1 33.Rf1 Bg2 34.Kg2 e5 35.Qe5 h6 36.Qe7) 1–0. Bulcourf,Carlos (2280) – Moccero,Eduardo (2205), Buenos Aires PRO op, 1993.

8.Ne5 Be5 9.Be5 Nbd7 10.Bb2=.

8.h3 0-0 9.0-0 Nbd7 10.d3 Rc8 11.Nbd2 Re8 12.a4 Bc7 13.Re1 (13.Qc2 e5=) 13...Qe7 14.Qc2 e5 15.cd5 (15.e4 d4=) 15...Nd5 16.e4 Nf4 (16...Nb4 17.Qc3=) 17.Bf1 (17.a5 ba5 18.Nc4 Qf6=) 17...Nf8 (17...Qf6 18.Rec1+=) 18.g3 (18.a5 N8g6=) 18...N4e6 (18...N4g6 19.h4=) 19.a5 (19.Ne5 Be5 20.Be5 Ng6+=) 19...f6 (19...Nd4 20.Nd4 cd4 21.a6+=) 20.Nc4= Nd4 (20...Qd7 21.ab6 ab6 22.Ra7+=) 21.Bd4 (21.Nd4 cd4 22.ab6 ab6=) 21...ed4 (21...cd4 22.a6 Ba8 23.Rac1=) 22.Nh4 (22.Bg2 Ng6=) 22...Qd7+= 23.Qb3 Kh8 (23...Qf7 24.Bg2=) 24.Nf5 (24.Bg2 ba5 25.Na5 Ba5 26.Ra5 Bd5+=) 24...ba5 (24...Rb8 25.ab6 ab6 26.Bg2=) 25.Na5+= Rb8 26.Nb7 Rb7 Attacking the isolated pawn on b5 27.Qc4 (27.Qd5 Qd5 (worse is 27...Rb5 28.Qd7 Nd7 29.Ra7+/–; 27...Qb5?? 28.Reb1 Re5 29.Qf7+–) 28.ed5 Re5+=) 27...Bb6 (27...g6!? 28.Nh4 Qb5 29.Qb5 Rb5 30.Ra7 Bb8=) 28.Bg2+= Rc7 (28...Rbb8 29.Kh2+=) 29.Re2 (29.f4 g6 30.Nh6 Qe6+/–) 29...Ng6 (29...Ne6 30.Kh2+=) 30.f4 Ne7 31.Nh4 (31.Ne7!? Qe7 32.e5+/–) 31...g5 (31...Nd5 32.Rae1 Ne3 33.Re3 de3 34.Re3=) 32.fg5 fg5 33.Nf3 h6?? (better is 33...Nf5=) 34.Ne5+– Qc8 (34...Nf5 35.Nd7 Rd7 36.Rf2+–) 35.Nf7 Kg7 36.Nd6 Qd8 (36...Ng6 37.Nc8 Rcc8+–) 37.Ne8 (better is 37.Qf7 Kh8 38.Ne8+–) 37...Qe8 38.Rf1 (38.Rae1!? Ba5 39.Rf1 Ng6+–) 38...Ng6 39.Ref2 (39.e5 Ne5 40.Qd5 Re7+–) 39...Ne5+/– 40.Qb3 (better is 40.Qd5!? Nd3 41.Rf6+/–) 40...c4= 41.dc4 d3 42.Kh2 Bf2 43.Rf2 Rc4 ½–½. Gross,Wilhelm – Merten,Rainer, xxxi/01, 1997.

9.d4 dc4 10.Nbd2 Qe7 (10...c3 11.Bc3 Nd5 (11...Nbd7 12.Rc1 a6 13.ba6 Ba6 14.Nc4 Bc4 15.Bc4 Ne4 16.Qd3) 12.Bb2= a6 13.dc5 Bc5 14.Ne4 ab5 15.Nc5 bc5 16.Bb5; 10...a6 11.Nc4 ab5 12.Nd6 Qd6 13.dc5 Qc5 14.Qb3 Nbd7 15.Rac1 Bd5 16.Rc5; 10...Nbd7 11.Nc4 Bc7 12.Qc2 Qe7 13.Rfd1 a6 14.ba6 Ra6 15.a4 h6 16.Nfe5) 11.Nc4+= Rd8 (11...Nbd7 12.Nd6 Qd6 13.dc5 Qd1 14.Rfd1 Nc5 15.Rac1 Bd5 16.Ne5) 12.Nd6 (12.Nfe5 Be5 13.Ne5 cd4 14.ed4 Nd5 15.Qd2 Rc8 16.Rac1) 12...Rd6 13.Ne5 Rd8 (13...Qc7 14.Qa4 Nbd7 15.Rfd1 h6 16.g3) 14.Bf3 (14.Bd3 cd4 15.ed4 a6 16.a4) 14...Nd5 (14...a6 15.a4 ab5 16.ab5) 15.Qb3 (15.Rc1 a6 16.a4) 15...f6 16.Nd3 ½–½. Huelle,Gunter (1760) – Boehme,Erich (1930), Halle GER, 2011.

9.d4 cd4 10.Qd4 Nbd7 11.cd5 e5 12.Qh4 Nd5 13.Qd8 Rfd8 14.Nbd2 Bb4 15.a3 Bc3 16.Rab1 Nc5 17.Nc4 f6 18.Rfc1 Na4 19.Bd1 Nb2 (19...Bb2!? 20.Nb2 Nac3-/+) 20.Nb2 Rac8 21.Na4 Ba5 22.Bb3 Kf8 23.Rc8 Rc8 (23...Bc8?! 24.Rd1 e4 25.Nd4=) 24.Kf1 (24.Rd1 Ke7-/+) 24...Ke7 (24...Nc7 25.Bc4 Be4 26.Ra1–+) 25.Ke2 (25.Rd1 Nc3 26.Nc3 Rc3–+ (worse is 26...Bc3 27.Rc1-/+)) 25...g5 26.g3 a6 27.e4 (27.ba6 Ba6 28.Kd1 Bd3–+) 27...Nc7 28.Rc1 Nb5 29.Rc8 Bc8 30.Kd3 Na3 31.Nc3 Bc3 32.Kc3 Nb5 33.Kb4 Bd7 34.Bd5 a5 35.Kb3 (35.Kc4 g4 36.Ne1 Nd4–+) 35...Kd6 (35...Nd4 36.Nd4 ed4 37.Kc2–+) 36.Kc4 Nc7 37.Bb7 (37.Bg8 Be6 38.Be6 b5 39.Kc3 Ne6–+) 37...b5 38.Kb3 Be6 39.Ka3 Kc5 40.h4 h6 41.hg5 hg5 42.Nd2 Kd4 (42...Kb6 43.Bd5 Nd5 44.ed5 Bd5 45.Kb2–+) 43.Nb3 (43.Kb2 a4–+) 43...Bb3 44.Kb3 Kd3 45.Bc6 Ke2 46.f4 (46.Bd7 Kf2 47.g4 Kf3–+) 46...gf4 47.gf4 ef4 48.Kc3 (48.Bd7–+) 48...f3 49.e5 fe5 0–1. Olsson,Tord – Adan Bermudez,S (2400), Politiken Cup, 2015.

9.d4 Nbd7 10.cd5 ed5 11.Qc2 (11.Nc3 c4 12.Qc2 Qe7 13.a4 a6 14.ba6 Ra6 15.Nd2 Rc8 16.g3; 11.h3 c4 12.Qc2 a5 13.Nc3 g6 14.Rab1 Re8 15.Rfe1 Qc7 16.Rbd1; 11.dc5 bc5 12.Nc3 h6 13.h3 Qe7 14.Qb3 d4 15.Na4 Nb6 16.Nb6) 11...a5 12.Nc3 c4 13.h3 g6 14.Ng5 Qe7 15.a4 Rfe8 16.Qd2.

9.cd5 Nd5 10.d3 a6 11.ba6 Na6 12.Nbd2 f6 13.a3 Qd7 14.d4 Rfc8 15.Nc4 Bc7 16.Ncd2 cd4 17.Nd4 Nc5 18.Rc1 f5 (18...Na4 19.Bb5 Qd6 20.Rc7 Nb2 21.Rc8 Bc8 22.Qc2 Qa3 23.Qc6+/–) 19.Nb5= Bb8 20.Nb3 Qc6 21.N5d4 Qc7 Do you see the mate threat? 22.g3 Qe7 23.Nb5 Ne4 The isolani on a3 becomes a target 24.Rc8 Bc8 25.Qd4 Ba6 26.Rc1 Qd7 27.Bc4 Bb7 (27...Nef6 28.Qd3=) 28.Bd5+= ed5 29.Qb6 Ra6 30.Qd4 f4 31.ef4 Bf4 32.Nc5 (32.gf4?? Rg6 33.Kf1 Qb5 34.Rc4 dc4–+) 32...Nc5 33.Rc5 (33.gf4 Rg6 34.Kf1 Qb5 35.Rc4 dc4–+) 33...Bb8 34.Rc1 Re6 35.Qb4 Ba6 36.a4 Re4 37.Qb3 Re8 38.Bd4 Kh8 39.Qc3 Rc8 40.Qd2 Re8 41.Qa5 Qb7 (41...Bb7 42.Re1+/–) 42.Kg2 h6? (42...Bb5!? 43.Qb5 Qf7+/–) 43.Nc7+– Rc8 44.Qd2 Threatening mate: Qxh6 44...Kg8 (44...Rc7? 45.Rc7 Bf1 46.Kf1 Qa6 47.Kg2 Bc7 48.Qc3+–) 45.Na6 Rc1 46.Qc1 Qa6 47.Qb2 Ba7 48.Bg7 The passed pawn on f2 will quickly become a dangerous weapon 48...Qg6 (48...Qa4 49.Bh6 Bd4 50.Qd2+–) 49.Be5 (49.Bh8!? d4 50.Qb7 Kh8 51.Qa8 Qg8 52.Qa7 Qd5 53.f3 d3 54.Qb8 Kh7+–) 49...Qe4 50.Kh3 Qf5 51.g4 Qe4 (51...Qf2 52.Qf2 Bf2 53.a5+–) 52.a5 (52.Kg3 Qa4 53.Qb7 Qa3 54.Kg2 Kf8 55.Bg7 Ke8 56.Qa8 Kd7 57.Qd5 Qd6 58.Qb7 Qc7 59.Qc7 Kc7 60.Bh6 Bd4+–) 52...Bf2 53.Qb8 Kf7 54.Qc7 Kf8 (54...Ke8 55.Qc6 Ke7 56.Qf6 Ke8 57.a6+–) 55.Qd8 Kf7 56.Qf6 (56.Qd7 Kf8 57.Bd6 Kg8 58.Qc8 Kh7 59.Qf5 Qf5 60.gf5 d4+–) 56...Ke8 57.a6 Qd3 (57...Be3 58.Qc6 Kf8 59.Qe6 Qf3 60.Kh4+–) 58.Kg2 Be3 59.a7! The mate threat is a8Q 59...Qe4 (59...Ba7 60.Qc6) 60.Kg3 Ba7 61.Qc6 Kf7 Threatening mate... how? 62.Qd7 Kf8 63.Bd6 (63.Qa7 Qe5 64.Kg2 d4+=) 63...Kg8 64.Qa7 d4 65.Qe7 Qd3 (65...Qe7 66.Be7 d3 67.Bb4+–) 66.Kh4 Qg6 67.Bc5 (67.Bc5 Qg5 68.Qg5 hg5 69.Kg5+–) 1–0. Moedl,Willi – Nemec,Zdenek, b2–b4.com, 2003.

9.Ne5 a6 10.Na3=+.

9.Ne5 Qc7 10.d4 cd4 (10...Rc8 11.f4+=) 11.Qd4= dc4 12.Ng4 Nbd7 13.Rd1 (13.Rc1 e5 14.Nf6 Nf6=) 13...Bc5 (13...Bd5 14.Nc3+=) 14.Qc3 (14.Qc4 e5=) 14...Be7 15.Nd2 c4 becomes the focus of attention 15...Rac8 (better is 15...Rfc8 16.Qc4 a6=) 16.Nf1 (better is 16.Rac1!?=) 16...h5 17.Ne5? (better is 17.Nf6!? Bf6 18.Qc2-/+) 17...Ne5–+ 18.Qe5 c3 19.Qc7 Rc7 20.Rac1 Rfc8 (20...cb2 21.Rc7 Be4 22.Re7+/–) 21.Ba1 c2 (better is 21...Ba3!? 22.Rc2 Be4 23.Rc3 Rc3 24.Bc3 Rc3 25.Rd4–+) 22.Rd3 Be4 23.Rb3 Bd5 24.Rd3 Bc4 (better is 24...Ba2 25.Be5 Rc5–+) 25.Bb2? (better is 25.Rc2 Bb5 26.Rc7 Rc7 27.Rd2–+) 25...Bd3 26.Bd3 Rd7 (better is 26...Nd5 27.a3 Bf6 28.Bf6 Nf6–+ (worse is 28...gf6 29.h4–+)) 27.Rc2 Rc2 (27...Rd3?! 28.Rc8 Kh7 29.Rc7=) 28.Bc2 Nd5 29.Bd4 Rc7 30.Bd1 g6 31.Bb3 (31.e4 Rc1 32.Bf3 Nc3 33.Bc3 Rc3–+) 31...Rc1 (31...Nc3 32.Bc3 Rc3 33.f4–+) 32.g3 Bd6 33.Kg2 (33.e4 Nc3 34.Bc3 Rc3–+) 33...Nb4 (better is 33...Nc7!? 34.Nd2 Nb5 35.Bb2–+) 34.Nd2 Nd3 35.Ne4 Be7 36.Kf3 Nc5 (36...Kf8 37.Ke2 Nc5 38.Nc5 bc5 39.Bb2-/+) 37.Nc5-/+ bc5 (37...Rc5?! 38.Bc5 bc5 39.Ke4=) 38.Bb2 Rb1 39.Ba3 (39.Be5 g5-/+) 39...Kf8 40.Bc4 Ke8 41.Ke2 (41.h3 Kd7–+) 41...Kd7 (41...g5 42.Kf3–+) 42.Bd3 (42.h4 Kd6–+) 42...Rh1 43.Bb2 (43.h4 c4! 44.Be4 Ra1 (44...Ba3?! 45.Bh1 Kd6 46.Bc6+=) 45.Bc6 Kd8 46.Be7 Ke7–+) 43...Rh2 44.Be4 (44.Be5 Bd6 45.Bd6 Kd6–+) 44...h4 45.Bc6 (45.Be5 f6 46.Bb8 Kc8 47.Ba7 f5–+) 45...Kc7 (45...Kd6 46.Kf3–+) 46.Be5 (46.gh4 Kd6 47.Kf1 e5–+) 46...Bd6 47.Bd6 Kd6 48.g4 (48.gh4 Rh4 49.e4 f5–+) 48...h3 49.Kf1 c4 (49...c4 50.Bf3 c3–+) 0–1. Schwetlick,Thomas (1875) – Ballin,Andre (1900), LM–ch Germany, 1996.

8.0-0 dc4 9.Na3 Be7 10.Nc4 0-0 11.a4 Nd5 12.Qb3 h5 13.d3 h4 14.h3 f5 15.a5+/– Qe8 16.a6 Bc8 17.d4 g5 18.Nce5 Ne5 (18...Ne5 19.Ne5 Bd6+–). pcmvr (2225) – tbrannon (1945), net–chess.com, 2006.

8.0-0 dc4 9.Bc4 Qc7 10.Re1 (10.d3 Bd6=) 10...Be7 (10...Bd6 11.d3=) 11.d4 (11.d3 0-0=) 11...cd4+= 12.Qd4 Rd8 (12...Bf3 13.gf3 Bd6 14.f4+=) 13.Nbd2 (13.Be2=) 13...Bc5 (better is 13...Nc5!? 14.Qf4 Qf4 15.ef4 Nce4 16.Ne4 Be4=) 14.Qh4+= h6 (14...Be7 15.Rac1 Qd6 16.Red1+=) 15.e4 (15.Rac1 Qb8+=) 15...g5 (15...Be7 16.e5 Nd5 17.Qg4+=) 16.Ng5 (16.Ng5 Bf2 17.Qf2 hg5 18.h3=) 1–0. DEFFM – GuestJMTK, freechess.org, 2018.

8.0-0 dc4 9.Bc4 Bd6 10.Nc3=.

8.0-0 dc4 9.Bc4 Bd6 10.d4=.

8.0-0 Rc8 9.d3 Bd6 10.Nbd2 Bb8 11.a4 0-0 12.a5 ba5 13.Qa4 Bc7 14.Nb3 dc4 15.dc4 Nb6 16.Qa2 Bf3 17.Bf3 Nc4 18.Bc3 Nd5 19.Bd5 Qd5 20.Rfd1 Qf5 21.Na5 Rfd8?? 22.Nc4 Rd1+/– 23.Rd1 Qh5 24.Qd2 Qh2 25.Kf1 Qh1 26.Ke2 Qg2 27.Ne5 h6?? 28.Qd7+– Rd8 29.Qc7 Rd1 30.Kd1 Qf1 31.Be1 c4 32.Qc4 Qh3 33.Qc8 Kh7 34.Qc2 f5 35.Qe2 Qg2 36.Qf3 Qf1 37.e4 Qb5 38.Nd3 Qb1?? 39.Ke2+– Qc2 40.Kf1 fe4 41.Qe4 Kh8 42.Qg6 e5 43.Qe8 Kh7 44.Ne5 Qf5 45.Nf7 a5 46.Qh8 Kg6 (46...Kg6 47.Ba5! Qh3 48.Ke2 Qe6 49.Kf3 Qh3 50.Kf4 Kf7+–). druhynejhorsi (1770) – bukbuk (1765), kurnik, 2011.

8.0-0 g6 9.d4 Bg7 10.Nbd2 (10.dc5 Nc5 11.cd5 Qd5+=) 10...0-0= 11.a4 a5 12.Rc1 Rc8 (12...Qe7 13.dc5 Nc5 14.cd5 Bd5 15.Bd4=) 13.Nb3 (13.Qc2 cd4 14.Bd4 Qe7=) 13...Ne4 14.Nfd2 dc4 (14...Nd2 15.Qd2 dc4 16.Bc4 cd4 17.Nd4+=) 15.Nc4 White gets the initiative 15...cd4 (15...Bd5 16.f3 Bc4 17.Bc4=) 16.Nd4 (16.Bd4 Bd5+=) 16...Bd5 17.f3 Bc4 (17...Nec5 18.e4 Bc4 19.Bc4+=) 18.Bc4+= Nec5 19.f4 Qf6 20.Ba1 e5 (20...Qh4!?+=) 21.Nc6+/– Rc6 (21...Rce8 22.Qd5+/–) 22.bc6 (22.fe5!? Qf1 23.Qf1+–) 22...Qc6+/– 23.Bb5 Qe6 24.Rc4 f5 25.Qc2 (25.Rc3 Qe7+/–) 25...Rd8 26.Rc5 Qe7?? (26...bc5 27.Bc4 A pinning theme) 27.Rc7 (27.Rd5 Nc5 28.Rd8 Qd8 29.Qc4 Kh8 30.fe5 Qe7+–) 27...Kf8 (27...ef4 28.Qc4 Qf7 29.Qf7 Kf7 30.ef4+–) 28.Rd1 (28.Rd1 Kg8 29.Qb3 Kh8 30.Rdd7+–) 1–0. Ploss,H (1890) – Boch,N, AUT–chT, 1995.

8.a4 dc4 9.Bc4 (9.0-0 Be7=) 9...Bd6+= 10.h3 (10.Nc3 0-0+=) 10...Qc7 (10...0-0 11.0-0+=) 11.0-0 0-0 12.d3 Rad8 (12...Rfd8 13.a5+=) 13.Nbd2 Nd5 (13...Ne5 14.Be5 Be5 15.Ne5 Qe5 16.a5=) 14.Qb3 (14.a5 Nb4=) 14...Ne5 15.Ne5 (15.a5 ba5 16.Be5 Be5 17.Ne5 Qe5=) 15...Be5 16.Be5 Qe5 17.Nf3 (17.a5 Nc3=) 17...Qh5 (17...Qf6=) 18.Qd1 (better is 18.a5!?=) 18...Nc3-/+ 19.Qc2 Bf3 20.gf3 (20.Qc3 Qg6 21.g3 Be2-/+) 20...Nd5 21.Kh2 (21.Kg2 Qg6 22.Kh2 Qf5-/+) 21...Qf3 22.Rg1 Qf6 23.Raf1 (23.Rac1 Rd7-/+) 23...g6 (23...Rfe8 24.Rc1-/+) 24.Rg3 Nb4 25.Qe2 (25.Qd2 e5-/+) 25...Rd7 26.f4 (26.Rd1 Rfd8-/+) 26...Qc3 27.e4 Qc2 (27...Rfd8 28.f5 ef5 29.ef5-/+) 28.Qc2 Nc2 29.f5 Nd4 30.fg6 (30.h4 Kg7-/+) 30...hg6 (30...fg6 31.Rf8 Kf8 32.Kg2-/+) 31.h4 (31.e5 Kg7-/+) 31...Kg7–+ 32.Rh3 (32.Kh3 e5-/+) 32...Rh8 33.e5 (33.Kg3 Ne2 34.Kf3 Nc3-/+) 33...Rh5 34.Re1 Rh4! (34...Rh4 35.Rh4 Nf3 36.Kh1 Nh4–+) 0–1. Meyer,Frank (2035) – Schuettler,Thomas (1835), Wichern op 6th, 2001.

8.a4 Bd6 9.0-0=.

8.a4 g6 9.d3 dc4 10.dc4 Qc7 11.0-0 Bg7 12.a5 0-0 13.Nbd2 ba5 14.Bc3 a6 15.Ba5 Nb6 16.Bc3 ab5 17.cb5 Bf3 18.Nf3 Nfd5 Black prepares the advance c4 19.Bg7 Kg7 20.Ra6 Kg8 21.Qd2 c4 22.Qd4 f6 23.Nd2 The pressure on the isolated pawn grows 23...e5 24.Qa1 c3 25.Rc1 Rfc8 26.e4 Ra6 27.ba6 cd2 28.Rc7 Rc7 29.Qd1 Rc1 (29...Nc3 30.Qd2 Ne2 31.Kf1=) 30.ed5+= Kf7 (worse is 30...Rd1 31.Bd1 Kf7 32.Kf1+/–) 31.f4 ef4 32.a7 Rd1 33.Bd1 Ke7 34.Kf2 Kd6 35.Bf3 g5 36.Ke2 f5 37.h3 Kc7 38.d6! Kd6 39.Kd2 Kc7 40.Kd3 g4 41.Bd5! (41.hg4?! fg4 42.Bg4 Kb7=) 41...Kd6 (41...Nd5 42.a8Q Decoy) 42.Kd4 f3 43.gf3 gh3 44.f4 h2 45.Bh1 1–0. fluors – pierred (2845), net–chess.com, 2015.

8.Nc3 Bd6 9.a4 0-0 10.0-0 Qc7 (10...dc4 11.Bc4 Qc7 12.h3+=) 11.h3 (11.cd5 ed5 12.d4 Rfc8=) 11...dc4+= 12.Bc4 Ne5 (12...Rad8 13.Be2+=) 13.Ne5= Be5 14.f4 Bc3 15.Bc3 Qe7 16.Qe2 Ne4 17.Bb2 Rad8 (17...Bd5 18.Bd3=) 18.d3+= Nd6 19.Bb3 Nf5 20.e4 (20.a5 Bd5 21.Bc2 e5=) 20...Nd4 21.Bd4 Rd4 22.f5 Bc8 23.f6 gf6 24.Qg4 (24.Bc4 e5=) 24...Kh8+= 25.Qh4 (25.Qf3!?+=) 25...Rd3-/+ 26.Bc2 Rd2 27.Rf2 Rf2 28.Kf2 e5 29.Ra3 Rd8 30.Rg3 c4 31.Bd1? (better is 31.Kg1-/+) 31...Qc5–+ (31...Rd1?! 32.Qh6 Qc5 33.Ke2 Rd2 34.Qd2+=) 32.Kf1 Rd1 33.Ke2 Qd6 34.Qh6 Bg4! 35.hg4 (35.Rg4 Qd3 Mate attack; 35.hg4 Ra1 Combination) 35...Ra1 36.Rh3 (36.Qd2 Qd4 37.Re3–+) 36...Qd1 37.Kf2 Qe1 (37...Qe1 38.Kf3 Ra3 39.Qe3 Qe3) 0–1. Krstev,Emil (2155) – Dimitrov,Radoslav (2455), Skopje MKD, 4th Karpos Open, 2014.

8.d3 Bd6 9.0-0 dc4 10.dc4 Qc7 11.Nbd2 0-0-0 (11...0-0 12.Qc2=) 12.a4 (12.Qa4 Kb8=) 12...g5 (12...Ne5 13.Be5 Be5 14.Ne5 Qe5 15.Qe1=) 13.h3= Rhg8 (13...Bf3 14.Nf3 g4 15.hg4+=) 14.a5+= g4 15.hg4 Rg4 16.Ne1 (16.ab6 ab6 17.Ne1 Bh2 18.Kh1 Rg6=) 16...Bh2 17.Kh1 Rh4 Threatening mate: Bg1 18.Ndf3 Rh6 19.ab6 ab6 20.Qc2 Be4 21.Bd3 Bb7 22.Ra3 Be5 23.Kg1 Bb2 (23...Bh2 24.Kh1=) 24.Qb2+= Rg8 (24...e5 25.Bf5 Rh5 26.Bd7 Kd7 27.Ra7=) 25.g3 (25.Ra7 Qb8 26.Qa1 Rg2 27.Ng2 Bf3–+) 25...Ng4 (25...Qe5 26.Ra8 (26.Ne5?? Rh1) 26...Ba8 27.Qe5 (worse is 27.Ne5 Rh1) 27...Ne5 28.e4 Nd3 29.Nd3 Be4 30.Nde1–+) 26.e4 Ndf6 (26...Nde5 27.Qe2=) 27.Qe2+= Ne5 28.Bc2 Nf3 29.Qf3 (29.Nf3 Ne4 30.Be4 Be4=) 29...Nh5 (better is 29...Qe5!?=) 30.Ng2+/– f5 ½–½. Pagni,Carlo Alberto – Pal,Antal, corr ICCF TT–4–90 SF, 1995.

8.d3 Bd6 9.Nbd2 Qc7 10.h3 Rd8 (10...0-0 11.cd5 Nd5 12.Nc4+=) 11.a4 (11.0-0 0-0=) 11...0-0 12.Bc3 White intends a5 12...e5+= 13.0-0 Rfe8 Black plans e4 (13...d4 14.Bb2+=) 14.a5 e4 15.a6?? (better is 15.de4 de4 16.Ne1+=) 15...ef3–+ 16.Nf3 (16.Bf3 Ba8–+) 16...Ba8 17.Qc2 dc4 18.dc4 Be4 (18...Ne5 19.Ne5 Be5 20.Rad1–+) 19.Qb2 (19.Qb3 Ne5–+) 19...Bf3 20.Bf3 Be5 (20...Ne5 21.Be2–+) 21.Bc6 Rf8 (21...Re7 22.Rfd1–+) 22.Rad1 Bc3 Black launches an attack 23.Qc3 Ne5 24.Bb7 Ng6 25.Bc6 Qe5 26.Qc2 (26.Qe5 Ne5 27.Bd5 Nd5 28.cd5 Rfe8–+) 26...Qe7 27.Qc1 (27.Bd5 Rd6–+) 27...Ne5 28.Bb7 (28.Bd5 Rfe8–+) 28...Rd1 (28...Qe6!? 29.Rd8 Rd8 30.Rd1 Rd1 31.Qd1 Nc4 32.Qd8 Qe8 33.Qc7–+) 29.Rd1 Rd8 30.f4 (30.Rd8 Qd8 31.f4 Ng6–+) 30...Rd1 (30...Nd3 31.Qd2 Ne4 32.Qd3 Rd3 33.Rd3–+) 31.Qd1 Nc4 32.e4 Qd7 (32...Ne4?! 33.Be4 Nd6 34.Qd5–+) 33.Qb3 (33.Qd7 Nd7 34.Bc6–+) 33...Qd4 34.Kh1 (34.Kh2 Ne4 35.Be4 Qe4–+) 34...Ne4 (better is 34...Ne3 35.Qb1 Nh5–+) 35.Qc2 (35.Be4 Qe4 36.Qg3–+) 35...Ng3 36.Kh2 Ne3 37.Qf2 Nef1 (37...Ng4 38.hg4 Qf2 39.Bf3 c4 40.Ba8 Ne2 41.Be4 Qh4) 38.Kg1 Qd1 39.Bf3 Qc1 40.Be2 (40.f5 Ne3 41.Kh2 Nef5 42.Qg3 Ng3 43.Kg3–+) 40...Ne2 41.Kh1 Nfg3 (41...Nfg3 42.Kh2 Qh1) 0–1. Kleist,Werner (1665) – Aepfler,Gerhard (1750), 17 sen. Bad Sooden op, 2005.

8.d4 dc4 9.Bc4 cd4 10.Bd4 Bb4 11.Nbd2 Bf3 12.gf3+= (12.Qf3? Bd2 13.Kd2 Ne5–+).

8.d4 Qc7 9.Qb3 Bd6 10.Nbd2 Ne4 11.0-0 (better is 11.Qd3!?=) 11...Nd2 12.Nd2 Bh2 13.Kh1 Nf6 14.f4 Bg3 15.Qc2 Ne4 16.Rf3? (16.Ne4 de4 17.f5 Qd8-/+) 16...Bh4?? (better is 16...Qe7 17.Kg1 Qh4 18.Rg3 Ng3–+) 17.Ne4 de4 18.Rh3 Bf6 19.dc5 Qc5 20.Rd1 Bb2 21.Qb2 f6 22.Qd2 Qe7 23.Bh5 Kf8 24.Qd7 Rg8 25.Rd6 g6 26.Be2 (26.Bg6!? hg6 27.Rh7=) 26...Rg7+= 27.Qe7 Ke7 28.Rd4 f5 29.Kg1 Rd8 30.Kf2 Rh8 31.Rh1 h5 32.g3 Rgh7 33.Rhd1 Bc8 34.Bf1 h4 35.gh4 Rh4 36.Bg2 Rg4 37.Rh1 Rh1 38.Bh1 g5 39.fg5 Rg5 40.a4 (40.c5 bc5 41.Ra4 a6 42.ba6 Rg8–+) 40...Bd7 41.Bg2 Rg8 42.Rd1 Rc8 43.Rc1 Rc7 44.Ke2 e5 45.Kd2 Be6 46.Bf1 f4 47.ef4 (47.Kc3 Rd7–+ (47...fe3?! 48.Re1-/+)) 47...ef4 48.Kc3 Bf5 49.Kd4 e3?? (better is 49...Ke6–+) 50.Ke5+= f3 51.Kf5 e2 52.Be2 (52.Re1!?=) 52...fe2+= 53.Re1 Rc4 54.Re2 Kd6 55.Ra2 Kc5 56.Ke5 Kb4 57.Kd5 Rh4 58.Kc6 Kb3 (better is 58...Ka5–+) 59.a5?? (better is 59.Ra1+=) 59...Rh6 (worse is 59...Ka2 60.ab6 Rh6 61.Kd5 Rb6 62.Kc4–+) 60.Kb7 Ka2 61.a6 Rh7 62.Kc6 Kb3 63.Kd5 Kb4 (63...Kb4 64.Ke4 Kb5–+) 0–1. Anjos,Diovana – Rocha,Juliana (1665), Umuarama BRA, JOJUPS Cup (w), 2013.

8.d4 Qc7 9.Nbd2 cd4 10.Bd4 Ba3 11.cd5=.

8.d4 Qc7 9.Nbd2 Rd8 10.0-0 (10.cd5 Bd5 11.Qc2 Qb7=) 10...Bd6 11.Rc1 0-0 12.Re1 (12.Bd3 e5 13.de5 Ne5 14.Be5 Be5 15.cd5 Rd5=) 12...Ne4 13.g3 (13.h3 a5=) 13...dc4 (13...a5 14.cd5 ed5 15.a4=) 14.Rc4 (14.Ne4 Be4 15.Nd2 c3 16.Bc3 Bb7=) 14...Ndf6 (14...Nd2 15.Nd2 Qb8 16.e4=) 15.Ne4 (15.Qc2 Qe7=) 15...Ne4+= (worse is 15...Be4 16.dc5 Be7 17.Qa4 Bf3 18.cb6=) 16.Bd3 Bd5 17.Ra4 (17.Rc1 f5+=) 17...Qb7 (17...c4 18.Be4 Be4 19.Ba3 Ba3 20.Ra3+=) 18.Qc2 (18.dc5 bc5 19.Qc2+=) 18...h6 (better is 18...Rc8!?+=) 19.dc5= Nc5 20.Qc3?? (better is 20.e4 Na4 21.Qa4 Ba2 22.Rd1+/– (22.Qa2?! Bg3 23.Rd1 Bf4=)) 20...f6 (better is 20...e5!? 21.Rh4 Bf3 22.Bf5–+) 21.Rg4 (21.e4 Na4 22.Qc2–+) 21...Bf3 (21...Bf3 22.Rd4 Be5–+ (worse is 22...Nd3 23.Qd3 Qe7 24.e4–+); worse is 21...Nd3 22.Qd3 Bf3 23.Rd4–+) 0–1. Woelfelschneider,Peter – Pollakowski, Obernburg, 1983.

8.d4 Qc7 9.cd5 Nd5 10.0-0 Rc8=.

8.d4 Rc8 9.Nbd2 (9.cd5 Nd5 10.0-0 cd4 11.Bd4 f6=) 9...Be7 (9...cd4 10.Bd4 dc4 11.Rc1=) 10.Rc1 0-0 11.0-0 Rc7 (11...a5 12.ba6 Ba6 13.Qa4=) 12.a4 Qb8 13.h3 (13.dc5 Bc5 (worse is 13...Rc5 14.Ba3+/–; worse is 13...Nc5 14.Be5+/–) 14.cd5 Nd5=) 13...Rfc8 (13...cd4 14.Bd4 Bd6 15.Qc2=) 14.Qb3 (14.Ba3 dc4 15.Nc4 Bd5=) 14...cd4 15.Bd4 Nc5 (15...Bd6 16.Rfd1+=) 16.Qa2 (16.Qc2 Nfe4=) 16...Nfe4 17.a5 (17.Rfd1 a5=) 17...Bf6 (17...ba5 18.Rfd1=) 18.ab6 (18.Ne4 de4 19.Nd2 Rd7 20.Bf6 gf6+=) 18...ab6 19.Qb2 (19.Ne4 de4 20.Ne5 Rd8=) 19...Bd4 (19...Nd2 20.Nd2 (20.Qd2? Nb3 21.Qc3 Nc1 22.Rc1 Bd4 23.Qd4 Rc5–+) 20...Bd4 21.ed4=) 20.ed4= (worse is 20.Nd4 Nd2 21.Qd2 e5-/+) 20...Nd2 21.Nd2 (21.Qd2? Nb3 22.Qb4 Nc1 23.Rc1 dc4–+) 21...Nd7 22.f4 dc4 23.Nc4 (23.Bc4 Nf6=) 23...Bd5 (23...Be4 24.Qb4+=) 24.Ne5= Ne5 (24...Rc1 25.Rc1 Nf6 26.Rc8 Qc8 27.Qa3=) 25.de5 (25.fe5 Qb7 26.Rc7 Rc7=) ½–½. Koerner – Niemann, tt, 1973.

8.d4 Be7 9.0-0 0-0 (--> 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

8.cd5 ed5 9.0-0 Bd6=.

8.cd5 Bd5 9.0-0 Bd6 10.d3 0-0 11.e4 (11.Qc2 Bb7=) 11...Bb7 12.Nbd2 Qc7 (12...Bf4 13.g3 Bh6 14.Nc4=) 13.Nc4 e5 (13...Bf4 14.g3 Bh6 15.e5=) 14.Nh4+= g6 15.Qc1 Kg7 (15...a6 16.Qg5 ab5 17.Nd6 Qd6 18.f4=) 16.f4 (16.Qg5 Ne8+/–) 16...ef4 17.Nd6 Qd6 18.Qf4 Qf4 19.Rf4 Rae8 20.Raf1 Re6 21.Bg4 Re7? (21...g5 22.Be6 fe6 23.Rf6 Nf6+/–) 22.Rf6 (22.Bf6?! Nf6 23.Rf6 g5+–) 22...Kg8 23.R6f4 (23.Rd6 Bc8+–) 23...Ne5 (23...a6 24.a4+–) 24.Be5 (24.Be2 a6+–) 24...Re5 25.Nf3 Re7 26.Rf6 (26.Ng5 c4+–) 26...Kg7 (26...h6 27.Rd6+–) 27.Rd6 (27.Ng5!? c4 28.dc4 Be4 29.Ne6 fe6 30.Rf8 Bd3+–) 27...f6 (27...f5 28.ef5 gf5 29.Bh3 Bf3 30.Rf3+– (worse is 30.gf3 Re2+–)) 28.a3 (28.Be6 Rfe8 29.Bd7 Rd8+/–) 28...a5 (28...h5 29.Be6 Rfe8+–) 29.Rb6 f5 (29...Rd8 30.Ne1 h5 31.Bh3+–) 30.ef5 gf5 31.Bh3 Rf6 32.Rf6 Kf6 33.Nd2 (33.Nd2 Re2 34.Nb3+–) 1–0. Rosner,Dirk – Gross,Michael, Schach Wittow1, 2003.

8.cd5 Bd5 9.0-0 Bd6 10.d3 Qc7 11.e4 Bb7 12.Bf6 (12.Nbd2 a6 13.Nc4 e5= (< 13...ab5 14.Nd6 Qd6 15.e5+/–)) 12...gf6 (12...Nf6 13.Nbd2=+) 13.Qb3 (13.Nbd2 a6=) 13...0-0-0 (13...Ne5 14.Nbd2=+) 14.a4 a5 (14...c4!? 15.Qc4 Qc4 16.dc4 Nc5=) 15.ba6+= Ba6 16.Nc3 (better is 16.Nbd2!?+/–) 16...Ne5= 17.Nb5 (17.a5 Nf3 18.Bf3 ba5=+) 17...Bb5 (17...Nf3 18.Bf3 Bh2 19.Kh1 Bb5 20.ab5 Be5-/+) 18.ab5 (18.Qb5 Nf3 19.Bf3 Bh2 20.Kh1 Be5=+) 18...Kd7 (18...Nf3 19.Bf3 Bh2 20.Kh1-/+) 19.Ra6 (19.d4 Nf3 20.Qf3 cd4+=) 19...Rb8 (19...Nf3!? 20.Bf3 Bh2 21.Kh1 Be5-/+) 20.Rfa1 (20.Nd2 Ng6 21.g3 Rhg8+=) 20...Rb7 (better is 20...Nf3!? 21.Bf3 Bh2 22.Kh1 Be5=+) 21.d4 (21.Nd2 Ng6 22.Nf1 Be5+=) 21...Nf3 22.Bf3 cd4?? (22...Bh2 23.Kh1 cd4 24.g3 Bg3 25.fg3 Qg3 26.Qd3 Qh4 27.Kg1=) 23.h3?? (better is 23.e5 Rbb8 24.ed6 Qd6 25.Ra7 Kd8 26.Rf7+–) 23...Rhb8 24.e5+/– Be5 25.Bb7 Rb7 26.g3 Qc3 27.Qd1 f5 28.R6a3 Qc4 29.Rb1 f6 30.f4 Bd6 31.Rd3 e5= 32.fe5 Be5 33.Rd2 Ke7 34.Rc2 Qd5+= 35.Rc6 Kf7 36.Qh5+/– Kg7 37.Qf5 d3 38.Qg4 Kf7 (39.Rb4 d2 40.Qh5 Ke7 41.Qh7 Qf7+/–). bby – itsaputon, Live Game Caissa's Web, 2004.

8.cd5 Bd5 9.Nc3 Bb7=.

8.cd5 Nd5 9.0-0 N7f6=.

9.a4 Bd6 10.Na3=.

9.a4 Bd6 10.cd5 Nd5 11.Na3 e5 12.Nc4 e4 (12...0-0!? 13.d3 a6=) 13.Nd6+= Qd6 14.Ne1 (14.Nh4 Ne7 15.f3+= (worse is 15.Bg7 Rg8-/+)) 14...0-0-0 (14...0-0!?=) 15.d3 (worse is 15.Bg7 Rhg8 16.Bb2 Ne5+/–) 15...f5 (15...ed3!? 16.Bd3 Ne5+/–) 16.de4+– fe4 17.a5 N7f6 18.ab6 ab6 19.Nc2 h5 20.Ra4 (20.Bc4!?+/–) 20...Nc7 21.Na3 (21.Qb1!?+/–) 21...Qd1= 22.Bd1 Rd3 (22...h4 23.Bc2=) 23.h4 (23.Bc2 Rd2 24.Bf6 gf6 25.Be4 Be4 26.Re4 Kb7+=) 23...Bd5= 24.Bc2 (24.Bc2 Bb3 25.Bb3 Rb3 26.Be5=). Quist,Viggo Bove – Hojbak,Per, corr Ch–DEN, 1989. (=1.c4 Nf6 2.Nf3 b6 3.b4 Bb7 4.Bb2 e6 5.b5 c5 6.e3 d5 7.Be2 Nbd7 8.0-0 Qc7)

9.a4 Bd6 10.cd5 Nd5 11.a5 ba5=.

9.a4 Bd6 10.g3 0-0 11.Qc2 dc4 12.Na3 Ne5 (12...Be4 13.Qc3+=) 13.Ne5= Be5 14.Nc4 Bb2 15.Qb2 ½–½. Huelle,Gunter (1795) – Baumert,Andre (1945), Leipzig VfB op, 2008.

9.a4 Bd6 10.h3 Be5 11.Ne5 Ne5 12.cd5 ed5 13.d4 Ned7 14.dc5 bc5 15.Nd2 c4 (15...0-0 16.Qc2+=) 16.Bd4 Nc5 (16...0-0 17.Qc2+/–) 17.Qc2 h5 (17...Qd6!?+/–) 18.Rfd1 Nce4 19.Ne4 Ne4 20.a5 Rd8 (better is 20...Qe7+–) 21.Ba7 Bc8 (21...Qd7 22.Bd4 Qb5+–) 22.Bb6 Qe7 23.Bd8 Qd8 24.Bc4! Qg5 (24...dc4 25.Rd8) 25.Bd5 0-0 26.Qe4 Kh8 27.a6 Bh3 28.a7 f5 29.a8Q Ra8 30.Ra8 Kh7 31.Bg8 Kh6 32.Rd6 g6 33.Ra7 (33...Qe7 34.Qf4 Kg7 35.Re7 Kf8 36.Rd8 Ke7 37.Qd6) 1–0. orane – passionfar19, Live Game Caissa's Web, 2004.

9.a4 e5 10.d3 (10.d4 ed4 11.ed4 cd4=) 10...Rd8 (10...dc4 11.dc4 e4 12.Nfd2+=) 11.Nbd2 (11.cd5 Nd5 12.a5 Bd6=) 11...Be7 (11...e4 12.Ng5=) 12.Rc1 (12.cd5 Bd5 13.Nc4 Bc4 14.dc4 e4=) 12...0-0 (12...e4 13.Ne1=) 13.Qc2 (13.cd5 Bd5 14.e4 Be6=) 13...e4 14.de4 (better is 14.Ng5 h6 15.Nh3=) 14...Ne4?? (14...de4!? 15.Ng5 Bd6+=) 15.Rfd1 (better is 15.cd5!? Nd2 16.Qd2+/–) 15...Bf6 16.Ne4 (16.Bf6 Ndf6 17.cd5 Bd5+=) 16...de4= 17.Bf6 Nf6 18.Nd2 Rd6 19.Nb1 Rfd8 20.Rd6 Rd6 21.Rd1 Bc8 22.Rd2 (22.Nd2 Bf5=) 22...Qe7 (22...Bg4 23.Nc3 Be2 24.Re2+=) 23.h3 h6 24.Nc3 ½–½. Rongen – Martini, Amsterdam, 1995.

9.Qc2 Bd6 10.cd5 ed5 11.d4 0-0 Black prepares the advance c4 12.dc5 bc5 13.Nbd2 c4 14.h3 Rfe8 15.Nd4 Rac8 16.Bc3 Nc5 17.a4 Nb3 18.Rab1 (18.N2b3? cb3 19.Qb3 Qc3 20.Qc3 Rc3–+) 18...Bh2 19.Kh1 Nd2 20.Qd2 Ne4 21.Qb2 Be5 22.Bg4 Rcd8 23.a5 White plans b6 23...Nc3 Black fights for the Initiative 24.Qc3 Bd4 25.ed4 Bc8 26.b6 ab6 27.ab6 Qf4 28.Bf3 Bb7 29.Ra1 Rd6 30.Rfb1 Re7 31.g3 Qf6 32.Ra5 (better is 32.Kg2!?=) 32...Qf5-/+ 33.Rba1 Qh3 34.Kg1 Qe6 (34...Rb6?! 35.Ra8 Bc8 36.Bd5=) 35.Qb4 h6 (35...Rb6? 36.Qb6 h6 37.Qb4+–) 36.Rb5 Qf6 37.Kg2 Rdd7 38.Bg4 Rd8 39.Bf3 Red7 (39...Re6 40.Qb2-/+) 40.Qc3 Bc6 (40...Bc6 41.Rb4 Rb8-/+) 0–1. Guentsch – Schendel,Andreas, BdF, 1988.

9.d3 Bd6 10.Nbd2 e5 11.h3 (11.Nh4 e4 12.Kh1 ed3 13.Bd3 Be5= (worse is 13...Bh2 14.f4+/–)) 11...e4 (11...0-0 12.cd5 Bd5 13.Nc4+=) 12.de4 (12.Ne1 0-0=) 12...de4+= 13.Ne1 (13.Nh4 0-0+=) 13...Ne5 (13...0-0 14.Nc2+=) 14.f4 ef3 15.Nef3 (15.Bf3 0-0-0=) ½–½. Schwichtenberg,Juergen – Spitzel,Horst, Frankfurt, 2000.

9.d4 0-0-0 10.Nbd2 h6 11.Qb3 dc4 12.Bc4 Nd5 13.Rfc1 f6 14.e4 Nf4 15.Be6 Ne2 16.Kf1 Nc1 17.Rc1 Kb8 18.Bd7 Qd7 19.dc5 Bc5 20.a4 Rhe8 21.Qc4 Qd3 22.Kg1 Qd7 23.a5 g5 24.ab6 Bb6 25.Bf6 Rc8 26.Qf1 Rc1 27.Qc1 g4 28.Nh4 Rc8 29.Be5 Ka8 30.Qb2 Qf7 31.Bg3 h5 32.Nf5 Qd7 33.Nb3 Qd1 0–1. Orang4Utan (1825) – spielfinger (1895), lichess.org, 2020.

9.d4 dc4 10.Bc4 cd4.

9.d4 dc4 10.dc5 Qc5 11.Qa4+=.

9.d4 dc4 10.Nbd2 cd4 11.Nd4 c3 (11...Bd5 12.Rc1).

9.d4 cd4 10.ed4 (better is 10.Qd4!? e5 11.Qh4= (worse is 11.Ne5 Bc5 12.Qh4 Ne5-/+)) 10...dc4-/+ 11.Nbd2 (11.Nfd2 Bd6 12.h3 a6 13.Nc4 Bh2 14.Kh1 ab5-/+) 11...c3 12.Rc1 Nd5 13.Ba1 (13.Ne4 Bb4-/+) 13...Rc8 (13...Bb4 14.Nc4-/+) 14.Rc2 (14.Nc4 a6 15.Ne3 Ne3 16.fe3 c2+=) 14...Qf4 (14...Bb4 15.Ne4–+) 15.g3 (15.Nc4 a6 16.Nce5 Ne5 17.de5 a5-/+) 15...Qb8 (15...Qg4 16.Ne5 Qh3 17.Bg4-/+) 16.Nc4 (16.Nb1 Nb4 17.Rc3 Na2 18.Rc8 Qc8-/+) 16...Nb4 17.Rc3 Na2 18.Ra3? (better is 18.Re3 Nb4 19.Nfe5-/+) 18...Ba3–+ 19.Qb3 (19.Na3 Nc3 20.Bc3 Rc3 21.Nb1–+) 19...Nc1 20.Bd1 (20.Qe3 Ne2 21.Qe2–+) 0–1. Laurent,Rudolf – Boesl,Sebastian, Oberpfalz–ch M2, 2001.

9.cd5 ed5 10.Nc3 Bd6=.

9.cd5+= Nd5 10.Na3 N7f6 11.Nc4 Ng4 (11...Be7 12.Qc2=) 12.d3 Bd6 Pawn h2, live or die! (12...a6 13.a4+=) 13.h3 (13.Bg7?! Rg8 14.Bb2 Bh2 15.Kh1 Bd6=; 13.Nd6 Qd6 14.e4 Nf4+=) 13...h5? (better is 13...Ngf6+/–) 14.hg4+– (14.Bg7?! Rg8 15.Bb2 Nh2+/–) 14...hg4 Threatening mate: Bh2. 15.Nd6 (15.Bg7 Bh2 16.Kh1 gf3–+) 15...Qd6 16.Ne5 (16.Bg7?! Rh5 17.Be5 Qf8+=) 16...f5 17.a4 Ne7 18.f4 Qd5 Do you see the mate threat? 19.e4 fe4 20.Ng4 0-0-0 21.Ne3 Qd7 22.de4 (22.Bg7?! Rh7 23.Be5 ed3+–) 22...Qe8 23.Qb3 Qg6 24.Bg4 Rh6 25.Rad1 (25.f5 Qh7 26.f6 gf6 27.Qe6 Kb8 28.Bf6 Rh1 29.Kf2 Rf1 30.Rf1 Qe4 31.Qe4 Be4 32.Be7 Rd4+–) 25...Rdh8 (25...Be4 26.a5+–) 26.Rd6 Qe4 27.Be6 Kb8 28.Be5 Ka8 29.Rfd1 Rh2 (29...Nc8 30.Bc8 Rc8+–) 30.Rd8 Nc8 Threatening mate: Rxg2 31.Rc8! Bc8 Deflection from d5 (31...Rc8 A deflection 32.Kh2) 32.Bd5 A double attack (32.Bd5 Bb7 33.Be4 Be4 34.Rd7+–) 1–0. Hirtreiter,Michael – Loderbauer,Gerhard, BdF, 1988.

9.h3 e5 (9...Bd6 10.Nc3=) 10.cd5 (10.d4 cd4 11.ed4 e4=) 10...e4 (10...Bd6 11.d4 Nd5 12.de5 Ne5 13.Nbd2=) 11.Nh4 Bd5 (11...Nd5 12.d3=) 12.Nc3+= Be6 (12...Qe5 13.Nd5 Qd5 14.d3 ed3 15.Qd3 Qd3 16.Bd3+=) 13.f4 (13.Qc2!?+/–) 13...ef3 (13...Qb7 14.Qc2+=) 14.Bf3 Rd8 15.Bc6 Bd6 16.Nf3 (16.Nf5 Bf5 17.Rf5 0-0+=) 16...0-0 17.Qc2 Ne5 18.d4? (better is 18.Ng5 Bc4 19.Nd5=) 18...Nc6–+ 19.bc6 Qc6 20.d5 (20.Ng5 cd4 21.ed4 h6 22.Ne6 fe6-/+) 20...Nd5 21.Nd5? (21.Ng5 g6 22.Nd5 Qd5 23.Qc3=) 21...Bd5?? (better is 21...Qd5 22.e4 Qc4–+) 22.Ng5= g6?? (22...f5 23.Rf5 h6 24.Rd5 hg5 25.Rg5 Rf7 26.Bg7 Bf4 27.ef4 Rg7 28.Qc4 Kh7 29.Rh5 Kg6+/–) 23.Qc3+/– f6 24.Rf6 Rf6 25.Qf6 Bh2 26.Kh2 Qf6 27.Bf6 Rf8 (27...Re8 28.Rd1 Bc6 29.Rd6+–) 28.e4 Rf6 (28...Bc6 29.e5+–) 29.ed5 Rf5 (29...c4+–) 30.Nf3 (better is 30.Rd1 Rg5 31.d6+–) 30...Rd5+/– 31.Re1 b5 (31...Kf7 32.Kg3+/–) 32.Re7 (32.Re8!? Kf7 33.Ra8 Ke6 34.Ra7 h6+–) 32...a5+/– 33.Ra7 (33.Kg3 c4+/–) 33...a4+= 34.Rb7 (34.Kg3 c4+/–) 34...b4 (34...c4 35.Ne1+=) 35.Ra7 (35.h4 h6 36.Ra7 a3+=) 35...a3 36.Ra5 (36.Rb7 g5+/–) 36...Rf5 (36...Rd1!?=) 37.Kg3+= c4 (37...h6 38.Ra7+/–) 38.Ra4+/– Rb5 Black prepares the advance b3 39.Nd4 Rb6 (39...Rb7 40.Nc2 b3 41.ab3 cb3 42.Na3+/–) 40.Nc2 b3 41.ab3 cb3 42.Na3 b2 43.Nb1 Rb3 (43...Rb7 44.Kf3+/–) 44.Kf2 Kg7 45.Ra6 (45.Ra7 Kh6+–) 45...Kh6 (45...h6 46.Rd6+/–) 46.Ke2 (46.Ra2 g5+/–) 46...Kg5 47.Ra5 (47.Re6 Rg3 48.Kf2 Rb3+/–) 47...Kh4 0–1. DEFFM – PamelaLew, freechess.org, 2016.

9.a4 0-0 10.d3 a6 11.Nbd2 ab5 12.ab5 Ra1 13.Qa1 Qc7 14.Rd1 Ne5?? (14...e5 15.cd5 Ra8 16.Qc1 Nd5 17.Ne4=) 15.Ne5 (15.Be5 Ra8 16.Qb2 Be5 17.Ne5 Nd7 18.Nd7 Qd7+-) 15...dc4?? (better 15...Ra8 16.Qc1 Be5=) 16.Ndc4+- (16.dc4?! Ra8 17.Qb1 Be5 18.Be5 Qe5=) 16...Be7 17.Bf3 Nd5 18.h3 (18.e4 Ra8 19.Qc1 Nb4+-) 18...f6 (18...Ra8 19.Qc1+-) 19.Ng4 (19.Bg4 f5 20.Bf3 Ra8+-) 19...h5 (19...Ra8 20.Qc1+-) 20.Nh2 e5 (20...Ra8 21.Qc1+-) 21.Bh5 (21.Qa7 Rd8+-) 21...Kh7 22.Bf3 g6 (22...Ra8 23.Qc1+-) 23.Qb1 (better 23.Qa2 Bd6+-) 23...f5 (23...Qd7 24.Ba1+-) 24.e4 Nf4 (24...Nb4 25.Be5 Qd7 26.ef5 gf5 27.Bb7 Qb7 28.d4+-) 25.Nf1 (better 25.Be5 Nh3 26.gh3 Qd7+-) 25...fe4 (25...Bf6 26.Ng3+-) 26.de4 Nh3 (26...Bf6 27.Rd6+-) 27.gh3 Rf3 28.Kg2 (better 28.Ne5 Rh3 29.Rd7 Qd7 30.Nd7+-) 28...Rf4 (28...Bh4 29.Rd2 (29.Kf3?! Qf7 30.Kg2 Qf2 31.Kh1 Qf3 32.Kg1 Bf2 33.Kh2 Qf4 34.Kg2 Be4 35.Qe4 Qe4 36.Kf2 Qc4=) 29...Rb3 30.Qd1 Rb2 31.Rd7 Kh6 32.Nb2+- (32.Rc7? Be4 33.Qf3 Rf2 34.Kg1 Rf3-+)) 29.Ng3 (29.Be5?! Re4 30.Kg1 Re5 31.Ne5 Qe5+/-) 29...Bh4 (29...Bf6+-) 30.Be5 Rf2 31.Kf2 Qf7 (31...Qe7 32.Qd3 Bc8 33.Qd6 Qf7 34.Kg2+-) 32.Kg2 Qe6 33.Qd3 Bc8 34.Rh1 (34.Ra1 Bb7+-) 34...Qf7 (34...Bd7 35.Ra1 Qe7 36.Bb8+-) 35.Qd5 Be6 (35...Qd5 36.ed5 Bb7 37.Rd1+-) 36.Qa8 Bc4 37.Qh8 1-0. Mettigel (2340) - ENERGIE73 (2300), Rated Bullet game, lichess.org, 2014.

9.a4 0-0 10.cd5 Nd5 11.Na3=.

9.a4 dc4 10.Bc4 (10.Na3 0-0=) 10...Qc7 (10...Ng4 11.h3 (11.Bg7 Rg8 12.h3 Rg7 13.hg4 Rg4–+) 11...Bf3 12.Qf3= (worse is 12.gf3 Nh2-/+)) 11.h3 Ne5 (11...0-0 12.d3+=) 12.Ne5= Be5 13.Be5 (13.Nc3 Bh2 14.Kh1 0-0=) 13...Qe5 14.Nc3 Nd5 (14...Qg5 15.f3=) 15.Ne2 (15.Bd5!? Bd5 16.Qc2+=) 15...Ne3+= 16.fe3 (16.de3 Qe4 A double attack) 16...Qe4 Theme: Double Attack. The mate threat is Qxg2 17.Rf2 (17.Nf4 Qc4 18.d3 Qc3+=) 17...Qc4-/+ 18.Rc1 (18.d3 Qb4-/+) 18...Qe4 19.Qc2 (19.Nc3 Qd3-/+) 19...Qc2 20.Rc2 Rc8 (20...Be4 21.Rc3-/+) 21.Nc3 Ke7 22.Ra2 Bd5 (22...Ra8 23.e4-/+) 23.Ra1 (23.Nd5 ed5 24.a5 Rc7-/+) 23...f6 (23...Rhd8 24.a5 f6 25.ab6 ab6 26.Ra6-/+) 24.Kh2 (24.a5 ba5 25.Ra5 Rc7-/+) 24...Rhd8 25.Rb1 (25.a5 Bc4-/+) 25...Bb7 26.Ra1 (26.g3 Rd3–+) 26...a5 (26...Rd3 27.Ra2–+) 27.Kg1 (27.ba6 Ba6 28.e4 Bd3–+) 27...h5 (27...Rd3 28.Kf1–+) 28.Ra2 (28.Rc1 Rd7–+) 28...g5 (28...c4 29.Kf1–+) 29.Ra1 (29.Rc2 f5–+) 29...h4 (29...f5 30.g4 hg4 31.hg4 fg4 32.Rh2–+) 30.Kh2 (30.Raf1 f5–+) 30...f5 31.g3 (31.Rg1 Rd7–+) 31...hg3 32.Kg3 Rh8 (32...Rd3 33.Kh2–+) 33.Rh2 (33.Re1 Rcd8–+) 33...Rh4 34.Rf1 (34.Ne2 Rd8 35.d4 cd4 36.Nd4 f4 37.ef4 Rd4 38.fg5 Ra4 39.Ra4 Ra4–+) 34...Rch8 35.Rff2 (35.d3 g4–+) 35...Kf6 36.Re2 (36.Rf1 g4–+) 36...f4 (36...g4 37.e4–+) 37.ef4 gf4 38.Kf2 Rh3 39.Rh3 Rh3 40.Ne4 (40.Kg1 Rh1 41.Kf2 e5–+) 40...Be4 41.Re4 Kf5 42.Rc4 e5 (42...e5 43.Kg2 Rg3 44.Kf2 e4–+) 0–1. Gerold – Fischer,A, corr SOK–87–15, 1987.

9.a4 Qc7 10.Nc3 0-0-0 11.d4 dc4 12.dc5 Nc5-/+ 13.Qc2 Nd3 14.Nd4? Bh2–+ 15.Kh1 h5 16.Nc6? Ng4 17.Bd3 Bg1!! 18.f4 cd3 19.Qb3 Be3 20.Ne4 Bc6 21.bc6 Qe7 22.g3 h4 23.a5 hg3 24.Kg2 Qh4 25.Rh1 Nh2 (25...Nh2 26.Ng5 Qf4–+) 0–1. nogumo – filmi@, mySchach.de, 2005.

9.a4 Qc7 10.Nc3 dc4 11.Bc4 (11.h3 Rd8+=) 11...Ng4 (11...Bf3!? 12.Qf3 Bh2 13.Kh1 Rd8+=) 12.h3 h5 (12...Bh2 13.Kh1 Bg1=) 13.d3 (13.Be2 Ngf6+=) 13...Ndf6 (better is 13...Bh2!? 14.Kh1 Nde5+=) 14.e4 (14.a5 Rd8+=) 14...0-0-0 (better is 14...Ne5+=) 15.Ne2?? (better is 15.a5+/–) 15...Ne4!-/+ The mate threat is Bh2 16.Qe1 (16.de4 Bh2 Discovered attack) 16...Nef6 17.Qb1? (17.Ng5 Nh2 18.Be6 fe6 19.Ne6–+) 17...Bf3–+ 18.gf3 Nh2 19.Rd1 Nf3 20.Kg2 (20.Kf1–+) 20...Qb7 21.Kf1 Nh2 22.Kg1 (22.Ke1 Qg2 23.Kd2 Qf2–+) 22...Qf3 (22...Qf3 23.Ng3 h4–+) 0–1. Bothe – Richter, corr, 1973.

9.Qc2 0-0 10.cd5 ed5 11.Nc3=.

9.Qc2 Qe7 10.d3 (10.Nc3 0-0=) 10...Rd8 (10...0-0 11.Nbd2=) 11.Nbd2 Bb8 (11...0-0 12.a4=) 12.Rfe1 (12.h3 0-0+=) 12...0-0 13.Rad1 (13.Qa4 Ne4 14.g3 Nd6+=) 13...Rfe8 (13...Bd6 14.Bf1=) 14.Bf1 (14.Qa4 d4 15.ed4 cd4 16.Bd4 e5+=) 14...Nf8 (14...Bc7 15.h3=) 15.a4 (15.g3 Ng6=) 15...Ng6 16.a5 (16.h3 h6=) 16...dc4 (16...ba5 17.Be2+=) 17.Qc4 Qc7 (17...ba5 18.Qa4=) 18.g3 (18.ab6 ab6 19.Be2 Qe7=) 18...Re7 (18...ba5 19.Be2+=) 19.Qc3 (19.a6 Bd5 20.Qc2 Qd7+=) 19...e5 (19...ba5 20.e4+=) 20.e4 (20.a6 Bc8+=) 20...Ne8 (20...Qd7 21.ab6 ab6 22.Qb3+=) 21.Nc4 (21.Qb3 Qd7+=) 21...Nd6 22.Nd6 Qd6 23.Nd2 (23.h4 Nf8+=) 23...Qd7 24.Qb3 (24.ab6 ab6 25.Qb3 Qg4+=) 24...Bc8 (24...ba5!? 25.Qc4 Bc7+=) 25.Nc4+/– Qc7 (25...Qb7 26.Be2+/–) 26.Ra1 Kh8 (26...h6 27.ab6 ab6 28.Be2+/–) 27.ab6 ab6 28.Ne3 (28.Be2 Re6+/–) 28...Be6 29.Qc2 Qd7 30.Qa4 (30.Reb1 Bc7+/–) 30...Qe8+= 31.Nc4 Rb7 (31...Bc7 32.Qb3+=) 32.Qa6 (32.Bc3 f6+/–) 32...Qe7+= 33.Bc3 (33.Be2 f6+=) 33...f6 (33...Ra7 34.Qb6 Rb7 35.Qc6=) 34.Qa4 (34.Be2 Kg8+/–) 34...Qd7+= 35.Qb3 Ne7 36.Ra6 (36.Reb1 Nc8+=) 36...Nc8= 37.Qb2 Bc7 38.Rea1 Nd6 Attacks the isolani on b5 39.Na3 (39.Nd6 Bd6 40.Be2 Be7=) 39...Nf7 (39...Kg8 40.Be2=) 40.Be2 Rdb8 (40...Nd6 41.Bf1=) 41.Nc2 (41.Nc4 Nd6 42.Nd6 Bd6+=) 41...Nd6= 42.Rb1 Ne8 (42...Qf7 43.Rba1=) 43.Ne3+= Bd6 (43...Qf7 44.Qc2+=) 44.Bd1 (44.Ra3 Be7+=) 44...Nc7= 45.Raa1 (45.Ra4 Be7=) 45...Be7 46.Bc2 Qe8 47.Nc4 (47.Kg2 Bd7=) 47...Bd7 48.Ba4 Rd8 (48...Ra7 49.Kg2=) 49.Ne3 (49.Ra3 Ra8=) 49...Qg6 (49...Ra7 50.Qb3=) 50.Qe2 (50.Rd1 h5=) 50...Bc8 (50...Ra7 51.Nc4 Ra4 52.Ra4 Nb5 53.Ba1=) 51.Ra2 Bf8 (51...Bd7 52.Raa1=) 52.Rab2 (52.Nc4 Ne6 53.Qe3 Nd4=) 52...Bd7 (52...Ne6 53.Nd5=) 53.Kh1 (53.Ra1 Ra8=) 53...Ra7 (53...Ra8 54.Qc2+=) 54.Qc2 Rda8 (54...Qh5 55.Kg1+=) 55.Nc4 Ra4 56.Nb6 Qg4 57.Kg1 (57.Na4?? Qf3 58.Kg1 Bh3 59.Be5 Qg2) 57...R4a7 (57...Ra3 58.f3 Qf3 59.Nd7 Ne6=) 58.Nd7+= Qd7 59.b6 Rb7 60.bc7 Rc7 61.Rb8 (61.Rb5 Qc8+=) 61...Rb8 (61...Rc8 62.R1b7 Qc6 63.Ra8 Ra8 64.Rb1+=) 62.Rb8 Rc8 63.Rc8 Qc8 64.Qa2 (64.Qa4 h5+=) 64...Qd7 65.Qa6 (65.Qc4 h5+=) 65...Kg8 (65...h5 66.h4+=) 66.Qc4 (66.Bd2 Kf7+=) 66...Qf7 67.Kf1 (67.Qa4 Qe6+=) 67...Qc4= 68.dc4 Kf7 69.Ke2 (69.Bd2 h5=) 69...Ke6 (69...g6 70.Bd2=) 70.Kd3 (70.Bd2 g6=) 70...g6 71.Bd2 Bd6 (71...f5 72.Bc1=) 72.Kc3 Kd7 73.Kb3 (73.f3 f5=) 73...Kc6 (73...f5 74.f3=) 74.Ka4 (74.g4 h5 75.gh5 gh5+=) 74...Bc7 (74...f5 75.f3=) 75.Ba5 (75.g4 Bd6=) 75...Bb6 (75...Bd6 76.g4 Bf8 77.Bd2=) 76.f3 (76.g4 g5 77.h3 h6+–) 76...Ba7 (76...f5 77.Bd2=) 77.Bd8 (77.Bc3 Bb8=) 77...f5 78.Ka5 (78.Bf6 Bb8=) 78...fe4 (78...h6 79.Be7=) 79.fe4 Bb8 (79...h6 80.Be7=) 80.Ka6 (80.Ka4 Bd6=) 80...Bd6 81.g4 (81.h3 Kd7 82.Bf6 Kc6=) 81...h5 (81...Bf8 82.Bf6 Bd6 83.Ka5=) 82.gh5 gh5 83.h3 (83.Bg5 Bc7=) 83...Bf8 (83...Kd7 84.Bg5 Kc6 85.Ka5=) 84.Bf6 (84.Bg5 Bd6=) 84...Bd6 85.Ka7 (85.Bg5 Bc7=) 85...Bc7 (85...Kc7 86.Bg5=) 86.Be7+= Ba5 87.Kb8 Bb6 (87...Bc7 88.Kc8+=) 88.Kc8 Bc7 89.Bf6 Kd6 90.Be7 (better is 90.Kb7 Ba5 91.Bg7+–) 90...Kc6+= 91.Bf6 Ba5?? (better is 91...Kd6=) 92.Be5+– Bb6 (92...Bd2 93.Bg3+–) 93.Bb8 (93.Bf4 Ba5+–) 93...Ba5 94.e5 Bc3 (94...Bd2 95.e6 Bg5 96.Bc7+–) 95.Bc7 Bd2 (95...Ba1 96.e6 Bf6 97.Bd8+–) 96.e6 (96.e6 Bg5 97.Bd8+–) 1–0. Ardelean,George Catalin (2335) – Sebe,Florin, ROM–ch U18 Romania, 1999.

9.Nc3 0-0 10.a4 (10.cd5 ed5 11.Qc2 Re8=) 10...Qc7 11.h3 (11.cd5 Nd5 12.Qb3 N5f6=) 11...Rad8 (11...dc4 12.Bc4 Rfd8+=) 12.Qb3 (better is 12.cd5!? Nd5 13.a5=) 12...dc4-/+ 13.Bc4 (13.Qc4 Bf3 14.Bf3 Ne5-/+) 13...Bf3 14.gf3 Ne5 15.Kg2 Be7 (15...Qb7 16.Be2-/+) 16.Rad1 Rd7 (16...Qb7 17.e4-/+) 17.Nb1 (17.d3 Ng6 18.Rg1 Nh4 19.Kh1 Nf3-/+) 17...Ng6 (17...Rfd8 18.d3-/+) 18.Be2+= Rd5 (18...Nh4 19.Kg1-/+) 19.f4 (19.Nc3 Rg5 20.Kh1 Rh5-/+) 19...Nh4 (19...Rfd8 20.d3+=) 20.Kh1 (20.Kh2 Qd6+=) 20...Qb7 21.f3 Nh5 (21...Nf5 22.Rg1+=) 22.Rg1 (22.Kh2 Rfd8+=) 22...Rd7 23.Rdf1 Nf5 (23...Rfd8 24.Rg4+=) 24.Kh2 Bh4 25.Rg4 (better is 25.Bd3 Nhg3 26.Rf2+=) 25...Nhg3–+ 26.Rg1 h5 (26...Ne2 27.Rg7 Ng7 28.Rg7 Kh8 29.Qc2+–) 27.R4g3+= Bg3 28.Rg3 Ng3 29.Kg3 Qd5 Attacking the backward pawn on d2 (29...Rd6 30.Kg2=) 30.Qc3 (30.Qd5 ed5 31.Kh4 g6=) 30...f6 31.Bc4 Qd6 (31...Qf5 32.e4 h4 33.Kg2 Qg6 34.Kf1=) 32.Qb3 (32.Kg2 h4=) 32...Re7 (32...Kf7 33.Kg2 Ke7 34.d3+=) 33.d4 g5 34.dc5 (34.Kh2 gf4 35.dc5 bc5+=) 34...gf4 35.Kf2 (35.Kg2 bc5 36.ef4 Qf4-/+) 35...fe3 36.Ke3 Qc5 37.Bd4 (37.Ke2!? Qd6 38.Kf1=) 37...Qg5-/+ 38.Kf2 (better is 38.Kd3 Qf5 39.Ke2 Qh3 40.Nd2-/+) 38...Qh4–+ 39.Ke3 Qh3?? (better is 39...Qe1 40.Kf4 Kg7–+) 40.Nd2 (40.a5 Qg3 (40...ba5?! 41.Bc5 Rfe8 42.Be7 Re7 43.Nd2=) 41.ab6 Qe1 42.Kd3 ab6-/+) 40...Qf5 (40...Kg7 41.Qd1-/+) 41.Ne4+= Kg7 42.Bc3 Ree8 (42...Rc7 43.Bb4 (43.Be6? Rc3 44.Qc3 Qe6–+) 43...Re8 44.Ke2-/+) 43.Qb4 (43.Ke2 Qh3=) 43...h4 (43...e5 44.Bd5-/+) 44.Qd6+= Rf7 (44...e5 45.Qc7 Kh8 46.Qa7-/+) 45.Qh2 Rh8 46.Qd6 Re8 47.Qh2 Qh5 (47...Rc8 48.Qa2=) 48.Qh3 Qh6 49.Ke2 Qf4 (49...Ref8 50.Be6 Rc7 51.Bb3+/–) 50.Qg2 (50.Be6 Rc7 51.Bf6 Kf8+=) 50...Kh8 (better is 50...Kh7!?+=) 51.Qg6+/– Ref8 (better is 51...Ree7+/–) 52.Bd2?? (52.Be6 Rg7 53.Qf5 Qf5 54.Bf5 Rc7+=) 52...Qh2 (better is 52...Qf5 53.Qh6 Qh7 54.Be6 Rg7+=) 53.Ke3+/– Rg7?? 54.Qh6 Kg8 55.Be6 Rff7 56.Nf6 Kf8 57.Bb4 Re7 58.Qh8 (58.Qh8 Rg8 59.Qg8) 1–0. Zylla,Johannes – Hanke, BS–Stadtm., 1993.

9.d3 0-0 10.Na3=.

9.d3 0-0 10.a4 e5 11.cd5 Nd5 12.Nfd2 Qg5 13.Ne4 Qg6 14.Bh5 Qe6 15.Nd6 Qd6 16.Bf3 Qc7 17.Nd2 Rae8 18.Nc4+= f5 19.a5 e4 20.de4 fe4 21.Bg4 N7f6 22.Be2 Nb4 23.Qd6 Qd6 24.Nd6 Rb8 25.Nb7 Rb7 26.Bc4 Kh8 27.ab6 ab6 28.Rfd1 h6 29.Rd6 Kh7 30.h3 h5 31.Bc3 Rd7 32.Rd7 Nd7 33.Ra7 Nf6 34.Rb7 Nbd5 35.Bf6 Nf6 36.Rb6 (36.Rb6 Rd8 37.Rc6+–) 1–0. pereira – mirek58, internet, 2007.

9.d3 0-0 10.cd5 ed5 11.Nbd2 (11.Nc3 Re8=) 11...Qc7 12.h3 Rfe8 13.Rc1 Rac8 14.a4 Ne5 (14...a6 15.ba6 Ba6 16.Qb3=) 15.Ne5 Be5 16.d4 Bh2 17.Kh1 Bd6 (17...c4 18.g3 Bg3 19.fg3 Re3 20.Rf6 gf6 21.Nf1+=) 18.dc5+/– bc5 19.Bf6 gf6 20.Bd3 Re5 21.f4 (better is 21.Nf3 Rh5 22.Nd4+–) 21...Re3= 22.Qg4 Kh8 (22...Kf8!? 23.Bh7 Rce8=) 23.Qf5+= Rd3 24.Qd3 Bf4 25.Nf3?? (better is 25.Rcd1+=) 25...Bc1-/+ 26.Rc1 Qf4 27.Rf1 Qe4 (27...Qa4 28.Qf5 Kg7 29.Qd7+/–) 28.Qc3 (28.Qd2 d4-/+ (28...Qa4 29.Qh6 Kg8 30.Qf6 Qb5 31.Ne5 Qf1 32.Qf1+–)) 28...d4–+ (28...Qa4 29.Qf6 Kg8 30.Ne5 Rc7 31.Nf7 Qf4 32.Rf4 Rf7 33.Qf7 Kh8 34.Qf8) 29.Qb2 Rd8 (29...Qd3 30.Rf2–+) 30.Re1 (30.Qc1 Rg8 31.Qh6 Qg6–+) 30...Qd5 (30...Qd3!? 31.Qd2 Qd2 32.Nd2–+) 31.Qe2 d3 (31...Qd7 32.Qf2 Qf5 33.Qf1–+) 32.Qe7-/+ Rd7?? (better is 32...Kg7 33.Qc7 h6-/+) 33.Qf6 (33.Qf8) 33...Kg8 34.Re8 1–0. GuestPHFX – GuestQFTM, freechess.org, 2017.

9.d3 a5 10.h3 h6 11.Nbd2 a4 12.a3 0-0 13.Nb1 Qc7 14.Nc3 d4 (14...dc4 15.dc4 Rfd8 16.Na4=) 15.ed4+= cd4 16.Na4 (16.Nd4 Nc5+=) 16...Nc5 (16...e5!?=) 17.Nc5+= Bc5 18.Nd4 (better is 18.Nd2+=) 18...Bd4?? (18...Qe5 19.Ne6 Qg3-/+ (19...Qe6?! 20.Bf3 Bf3 21.Qf3=)) 19.Bd4+– e5 20.Bb2 Rfe8 Black plans e4 21.Bf3 g5 (21...e4 22.Be2+–) 22.Bb7 Qb7 23.Qe2 Rad8 24.Rad1 e4 (24...Re7+–) 25.Bf6 ed3 (25...Rd6 26.Bb2+–) 26.Qb2 (better is 26.Qh5 Kh7 27.h4 Rd6 28.hg5 Rf6 29.gf6 Rg8+–) 26...Rd6 27.Bh8 (27.Qc3 g4 28.hg4 Ree6+–) 27...f5 28.Be5 Rde6 (28...Rd7 29.Qc3+–) 29.Bd4 Re2 30.Qb3 g4 (30...d2 31.Qd3+–) 31.c5 (better is 31.Qd3 R8e4+–) 31...Kh7 (31...Qf7 32.Rd3 bc5 33.Bc5+–) 32.c6 Qc7 33.hg4 fg4 (33...d2+–) 34.Qd3 Kg8 35.Be3 (35.Qg6 Kf8 36.Qh6 Kg8 37.Qh8 Kf7 38.Qg7 Ke6 39.Qg6 Kd5 40.Bb6 Rd2 41.Rd2 Ke5 42.Bc7) 35...Ra2 36.Qd5 (36.Qg6 Qg7 37.Qe8 Kh7 38.Qe4 Kg8 39.Rd8 Kf7 40.Qe8 Kf6 41.Rd6 Kf5 42.Qe6) 36...Qf7+– 37.Qf7 Kf7 38.Rd7 Ke6 (38...Kg6 39.Rd6 Kf5 40.Rh6 Ra3 41.Bb6+–) 39.Re1 (39.Bb6!? Re2+–) 39...Kf5 40.Red1 (40.c7 Rc2+–) 40...Ra3 41.R1d5 Kg6 (41...Ke4 42.Bb6 Rg8 43.c7 Ra1 44.Rd1+–) 42.R7d6 Kf7 43.Rf5 Ke7 44.Rd7 (44.Rff6 Ra1 45.Kh2 Rh8+–) 44...Ke6 45.Rfd5 (45.Rh5 g3 46.Bd4 gf2 47.Kf2 Rf8 48.Ke2 Rf4 49.Rh6 Kf5 50.Rf6 Ke4 51.Rf4 Kf4+–) 45...g3 46.R5d6 (46.Bd4 gf2 47.Kf2 Rf8 48.Kg1 Rf4 49.R5d6 Kf5 50.Rf6 Ke4 51.Rf4 Kf4+–) 46...Ke5 (46...Kf5 47.Kf1+–) 47.Bd4 Ke4 48.f3 (better is 48.Rh6 Rb3 49.Rh4 Kf5 50.fg3 Rb1 51.Kh2+–) 48...Kf5 (48...Kd3 49.Bf2 Kc4 50.Bg3 Kb5+–) 49.Rf7 (49.Rf6 Kg5 50.Rg7 Kh5 51.Rf5 Kh4 52.Rg4) 49...Kg5 50.Bf6 (50.Rg7 Kh5 51.Rd5 Re5 52.Re5 Kh4 53.Rg4) 50...Kh5+– 51.Rd1 (51.Kf1 Rb3 52.Bb2 Rg8+–) 51...Kg6 (51...Rae3 52.Kf1 Kg6+–) 52.Re7 Kf6 (52...Re7 53.Be7 Rc3 54.Bd8+–) 53.Re8 Kf7 (53...Rc3 54.Rb8 Rc4 55.Rb6+–) 54.Red8 h5 55.c7 h4 56.c8Q h3 (56...Ra7 57.Qf5 Kg7 58.R8d7 Rd7 59.Rd7 Kg8 60.Qe6 Kf8 61.Qf7) 57.Qf5 Kg7 1–0. GuestXCSC – kreng, freechess.org, 2017.

9.d4 0-0 10.Nbd2 Qc7 11.h3 Rfe8 12.a4 Rad8 13.a5 e5 14.ab6 ab6 (worse 14...Qb6 15.Bc3 Bc7 16.Ba5+=) 15.de5 Ne5 16.Ne5 Be5 17.Be5 Qe5 18.Ra7 Qb8 19.Ra2 d4 20.ed4 Rd4 21.Bf3 Ne4 22.Be4 Be4 (worse 22...Ree4 23.Ne4 Rd1 24.Rd1+-) 23.Qa4 Bb7 24.Nb3 Rd3 25.Rd2 (25.Nc1 Rdd8=+) 25...Rd2 26.Nd2 h6 27.Qb3 Qf4 28.Qd3 Re6 (28...Bg2 29.Kg2 Qg5 30.Kf3=+) 29.Rd1 Rd6 30.Qe2 Kh7 31.Qg4 (31.f3 Qd4 32.Qf2 Qc3-/+) 31...Qe5 (31...Qg4 32.hg4 Bc8 33.Kf1 Bg4 34.f3-/+) 32.Nf1?? (better 32.Qg3 Qg3 33.fg3-/+) 32…Rg6-+ 0-1. Bolk,Matthias (2085) - Postler,R (2240), Berlin GER, 2019.

9.d4 dc4 10.Bc4 0-0 11.Nbd2 Rc8 12.Qe2 Ne4 13.Rfd1 cd4 14.ed4 (14.Bd4!? Nd2 15.Nd2=) 14...Nd2-/+ 15.Nd2 Qg5 The mate threat is Qxg2 16.g3 Nf6 17.Rac1 Bb4 (17...Bd5 18.Nf3 Qg6 19.Ne5+=) 18.Nf3 Qf5 19.Ne5 Qh3 Threatening mate: Qg2 20.f3 Bd6 21.a4 Rc7 22.Bb3 Nh5 (better is 22...Rfc8!?+=) 23.Rc7+= Bc7 24.d5 Ng3 (better is 24...ed5!? 25.Ng4 Bd6=) 25.hg3+/– Qg3 26.Kf1 ed5 27.Bd5 White creates threats along the open d–file. (27.Rd5?! Bd5 28.Bd5 Qh4=) 27...Bc8 (27...Bd5 28.Rd5 Re8 29.Qg2+–) 28.Ng4 Bg4 (28...h5 29.Nf2+/–) 29.fg4+– Qf4 30.Kg1 Qg3 31.Bg2 Qh2 32.Kf1 White gets strong initiative 32...Qf4 33.Bf3 h6 (33...Qa4 34.Ra1 Qf4 35.Ra7+–) 34.Rd4 Qe5 35.Rd5 Qf4 36.Qe4 Qh2 37.Qd4 The mate threat is Qxg7 37...f6 38.Rd7 Be5 39.Qd5 Kh8?? (39...Kh7 40.Qe4 Kh8 41.Qg6+–) 40.Ba3 (40.Rd8 Rd8 41.Qd8 Kh7 42.Be4 g6 43.Qe7 Kh8 44.Qf8 Kh7 45.Bg6 Kg6 46.Qg8) 40...Qh3 41.Ke2 Qh2 42.Kd3 Re8 (42...Rc8 43.Rd8 Rd8 44.Qd8 Kh7 45.Be4 f5 46.Bf5 g6 47.Qd7 Bg7 48.Bg6 Kg8 49.Qe8 Bf8 50.Qf8) 43.Rd8 (43.Ra7 Bf4 44.Re7 Qd2 45.Ke4 Qe3 46.Kf5 Re7 47.Be7 Bc7+–) 43...Rd8 44.Qd8 Kh7 45.Be4 g6 (45...f5 46.Bf5 g6 47.Qe7 Bg7 48.Be6 Qg3 49.Ke2 Qg2 50.Ke3 Qg1 51.Kf3 Qf1 52.Kg3 Qg1 53.Kf4 Qf2 54.Ke4 Qg2 55.Ke3 Qg1 56.Kd2 Qf2 57.Kd1 Qf1 58.Kc2 Qe2 59.Kc1 Qf1 60.Kd2 Qf2 61.Kd1 Qf1 62.Kd2 Qf2) 46.Qe7 (46.Bg6 Kg7 47.Qf8 Kg6 48.Qg8) 46...Kh8 (46...Kg8 47.Qe8 Kg7 48.Qg6 Kh8 49.Qh7) 47.Qf8 Kh7 48.Bg6! Kg6 Theme: Deflection from g8 49.Qg8 1–0. Labahn,Wolfgang – Hoecker,Horst, Lippstadt, 1990.

9.d4 dc4 10.Bc4 Qc7 11.h3 cd4 12.Qd4 e5 13.Qc3 Bf3 14.gf3 Rc8 15.Nd2 0-0 16.Rac1 Qd8 17.Kh1 Nc5 18.Qc2 Qe7 19.Rg1 Ne6 20.Ne4 Ne4 21.Qe4 f5 22.Qd5 Rf6 23.f4 Rc5 24.Qd3 Kh8 25.fe5 Rh6 26.Rg3 Be5 27.Be5 Re5 28.f4 Re4 29.Rcg1 Nc5 30.Qc3 Na4 31.Qd3 Nc5 32.Qd5 Qf8 33.Kh2 Ne6 34.Qd2 Nc5 35.Qc3 Ne6 36.Be6 Ree6 37.Rg7 1–0. Orang4Utan (1785) – mohamedbarogy (1825), lichess.org, 2020.

9.d4 dc4 10.Nbd2 c3 11.Bc3 cd4+=.

9.d4 dc4 10.Nbd2!? c3 11.Bc3 Nd5 12.Bb2.

9.d4 Rc8 10.Nbd2 Bb8 11.Ne5 Ne5 12.de5 Ne4 (12...Nd7 13.cd5 ed5 14.Bg4=) 13.f4 (13.Ne4 de4 14.a3 Qg5=) 13...0-0 (13...Nd2 14.Qd2 dc4 15.Qc2=) 14.Ne4+= de4 15.Qe1 Qe7 16.Bd1 (16.Rd1 Rcd8+=) 16...Rcd8 17.Bc2 Ba8 (17...a6 18.ba6 Ba6 19.Qe2=) 18.Bc3 f5 (18...Rfe8 19.Qg3+=) 19.ef6+/– gf6 20.Rd1 Bc7 (20...e5 21.f5+/–) 21.Rd8 Bd8 (21...Rd8 22.Qh4 Rf8 23.Qg4 Kh8 24.f5+/–) 22.Qh4 f5 23.Qg3 Kf7 24.Qg7 (24.Rd1 Rg8 25.Qh3 Qh4 26.Rd7 Kg6 27.Qh4 Bh4 28.Ra7 Bf6 29.Bf6 Kf6 30.Rh7 Rb8+–) 24...Ke8 25.Bd1 (25.Qh6!?+/–) 25...Qg7= 26.Bg7 Rg8 27.Bh5 Ke7 28.Be5 (28.Bh6 Kf6+=) 28...Bb7+= 29.Rd1 Bc8 30.Kf2 a6 31.a4 a5 (31...ab5 32.ab5 h6 33.Bd6 Kf6 34.Ra1+/–) 32.h3 h6 (32...Bb7!?+/–) 33.g4+– Bb7 34.Kg3 Bc8 (34...fg4 35.hg4 Ba8 36.Kh4+–) 35.Rd2 (35.Kh4 Bb7 36.g5 hg5 37.fg5 Bd5 38.Bf6 Kd6+–) 35...Bb7 36.Kh4 (36.Kh4 Ba8 37.g5 hg5 38.fg5+–) 1–0. Mueller,Michael – Glasewald,Stefan, corr QTV–25 Dresden, 1991.

9.d4 cd4 10.ed4 0-0 11.Nbd2 Rc8 12.a4 Qc7 13.h3 dc4 14.Bc4 Bf3 15.gf3 (15.Qf3 Bf4 16.Ne4 Ne4 17.Qe4 Bh2 18.Kh1 Qc4 19.Kh2 Nc5-/+) 15...Bb4 16.Bd3 Qf4 17.Ne4 Nd5 18.Kg2 (18.Bc1!? Qh4 19.f4–+) 18...Qh4 19.Rh1 f5 20.Ng3 Bd6 (20...Nf4 21.Kg1–+) 21.Qb3 Kh8 22.Rae1 Rf6 23.Bc4 Rg6 24.Bd5 ed5 25.Qd5 Nf8 (better is 25...Rd8!? 26.Kf1 A) 26...Bg3? 27.Qd7 (worse is 27.fg3 Rg3 28.Ba3 Rh3 29.Rh3 Qh3 30.Kg1 Rg8-/+) 27...Rf8 A1) 28.fg3 Qg3 29.Ke2 Qg2 30.Ke3 f4 31.Ke4 Qc2 32.Kd5 Qb3 33.Ke4 Re6 34.Qe6 Qe6 35.Kd3 Qb3 36.Bc3 Rc8–+ (36...Qa4?! 37.Re5–+); A2) 28.Qe7 Qe7 29.Re7+–; B) 26...Nf6 27.Qf5 Bg3 28.fg3 Qg3+=) 26.Qf5+/– Rc4 (better is 26...Qd8 27.Rc1 Ne6+/–) 27.Re4?? (better is 27.Re8 Rf6 28.Qg4 Bg3 29.Ba3+– (worse is 29.fg3 Rc2 30.Kg1 Qh6-/+)) 27...Rg3-/+ 28.Kf1 Qg5 29.Qf7 Rc7 30.Qc7 (30.Qb3 Rg2 31.h4-/+) 30...Bc7 31.fg3 Qg3 (31...Bg3?! 32.Rg1 Qd2 33.Rg3 Qb2 34.Re8–+) 32.Re3 Bf4 33.Rc3 (33.Rb3–+) 33...Bd2 34.Ra3 (34.Rg1 Qe1 35.Kg2 Qe2 (35...Bc3?! 36.Re1 Be1 37.f4–+) 36.Kg3 g5–+) 34...Qe1 (34...Ng6 35.Ke2 Qg2 36.Kd3 Nf4 37.Kc4 Qh1 38.Kb3–+) 35.Kg2 Qe2 36.Kg3 Be1 (36...Be1 37.Re1 Qe1 38.Kg4 h5 39.Kg5 Qd2 40.f4 Qb2–+) 0–1. Lorenc,Tomas (2160) – Pribyl,Josef (2375), CZE–chT1W, 2007.

9.cd5 ed5 10.Qc2 0-0=.

9.cd5 ed5 10.d4 0-0=.

9.cd5 Bd5 10.Nc3 Bb7 11.d3 (11.Qc2 0-0=) 11...0-0 12.Nd2 (12.Qc2 Qc7=) 12...Qe7 (12...a6 13.Nc4 Bc7 14.Qb3=) 13.Nc4 Bc7 (13...Rfd8 14.f4=) 14.Bf3 (14.a4 Ne5=) 14...Bf3 15.Qf3 Ne5 16.Qe2 (16.Ne5 Be5 17.Rfd1 Rfd8=) 16...Nc4 17.dc4 Be5 18.Rfd1 Rfd8 19.Rd8 Rd8 20.Rd1 Rd1 (20...Rd6 21.Rd6 Qd6 22.h3=) 21.Qd1 (21.Nd1 Nd7=) 21...Qd7 (21...Ne8 22.f4 Bf6 23.Qd3=) 22.Qd7+= Nd7 23.f4 Bc3 24.Bc3 f5 (24...f6 25.Kf2+=) 25.Kf2 Kf7 26.Kf3 (26.e4 fe4 27.Ke3 g5+=) 26...g6 (26...Nf6 27.Bf6 Kf6 28.e4+=) 27.e4 Nf6 (27...h6 28.h4+=) 28.ef5 (28.Bf6 Kf6 29.e5 Ke7+=) 28...ef5 29.Be5 Ke6 30.a4 (30.Bf6 Kf6 31.h3 Ke7+=) 30...Ne4 (30...h6 31.Bf6 Kf6 32.h3=) 31.Ke2 (31.Ke3 h6=) 31...Nd6 (31...h6 32.Kd3=) 32.Kd3 Kd7 33.Bc3 Ne4 34.Be1 (34.h3 Nc3 35.Kc3 h6=) 34...h5 (34...h6 35.h4=) 35.a5 ba5 36.Ba5 Kc8 37.h3 ½–½. Fernandez Fornes,Juan A (2305) – Eichhorn,Ernst (2420), corr CAPA Bartis Memorial, 1997.

9.h3 0-0+= 10.a4 Qc7 11.Na3 Ne5 (11...e5 12.d4+=) 12.Rc1 Rad8 13.d4 (13.Ne5 Be5 14.d4 Bh2 15.Kh1 Bd6=) 13...Nc4 (13...Nf3 14.Bf3 cd4 15.cd5=) 14.Nc4 dc4 15.Rc4 (15.Bc4 Ne4=) 15...Bd5 16.Rc1 Qe7 17.Nd2 (17.dc5 bc5 18.Qc2 Ne4=) 17...Rd7 (17...cd4 18.Bd4 e5 19.Bb2+=) 18.Bd3 (18.Nc4 Bc4 19.Rc4 cd4 20.Bd4 Rfd8=) 18...cd4+= 19.ed4 Rc7 20.Qe2 Rfc8 21.Bb1 ½–½. Kuehnemund,Lutz (2130) – Kapp,Frank (1880), 9th Berlin Germany, Lichtenberger Sommer, 2010.

10.dc4=+ Qc7 11.Nbd2 0-0 12.Qc2=.

10.dc4+= Qc7 11.Nbd2 0-0-0 12.a4 (12.Qa4 e5=) 12...g5 (12...Ne4 13.Ne4 (13.Bg7? Rhg8 14.Ne4 Be4–+) 13...Be4 14.h3= (14.Bg7 Rhg8 15.Bc3 Bh2 16.Kh1 Ne5–+)) 13.Ng5 (13.h3 g4 14.hg4 Bf3 15.Nf3 Be5 16.Ne5 Ne5 17.Be5 Qe5+=) 13...Bh2 14.Kh1 Rdf8 (14...Be5 15.Be5 Ne5 16.a5=) 15.Bf3 (15.a5 Be5 16.ab6 ab6 17.Be5 Ne5+=) 15...Bf3 (15...Be5!? 16.Be5 Ne5+=) 16.Ngf3+= Be5 (16...Bd6 17.a5+=) 17.Ne5 (17.Be5 Ne5 18.a5 Rd8 19.ab6 ab6 20.Ra8 Kb7 21.Ne5 Ra8 22.Qf3 Nd5+/–) 17...Ne5+= 18.Bc3 White prepares a5 (18.a5 Neg4 19.Nf3 Rd8+/–) 18...Rhg8 (18...Neg4 19.g3 h5=) 19.f4 (19.a5 Neg4 20.Nf3 Ne4=) 19...Neg4 (better is 19...Qb7!? 20.Nf3 Rd8+=) 20.Qf3+= Kb8 (20...Rd8 21.a5+=) 21.Rfb1 (21.a5 Qb7+=) 21...Rg6 (21...Rd8 22.a5 Qb7 23.ab6 ab6 24.Ra2 Qf3 A) worse is 25.Nf3 Ne4 26.Ra3 Ng3 27.Kg1 Ne2 28.Kf1 Ne3 29.Ke2 Nc4 30.Be5 Kb7= (worse is 30...Ne5 31.fe5 Rg2 32.Ke3+/–); B) 25.gf3 Nf2 26.Kh2+/–) 22.a5 Rh6 23.Kg1 Nh2 (23...Qb7!? 24.e4 Rg8+/–) 24.Qc6 White threatens strongly Be5 (24.Qc6 Qc6 25.bc6+–) 1–0. Woronowicz,Zbigniew – Pal,Antal, corr 3GMM–04, 1997.

10.dc4=+ Qc7 11.Nbd2 0-0-0 12.Qa4 e5=.

10.dc4 Qc7 11.Nbd2 0-0-0 (11...0-0 12.Qc2=) 12.Qc2 (12.Qa4 Kb8=) 12...g5 13.Rfd1 (better is 13.Ng5!? Bh2 14.Kh1=) 13...g4-/+ 14.Ng5 Bh2 15.Kh1 (15.Kf1 Rhg8 16.Nh7 Be5 17.Nf6 Nf6 18.Be5 Qe5-/+) 15...Rhg8 16.Nf7 (better is 16.Nde4 Ne4 17.Ne4-/+) 16...Rdf8–+ 17.Nf1 Rf7 18.Nh2 Ne4 (better is 18...g3!? 19.Bf3 gh2 20.Qe2–+) 19.f4 gf3 20.Bf3 Ng3 21.Kg1 Bf3 22.Nf3 Rf3! 23.gf3 (23.Rd7 Qd7 24.gf3–+) 23...Ne2 Discovered attack 24.Kf1 (24.Kh1 Qg3 25.Qe2 Qh3 26.Qh2 Qf3 27.Qg2 Qg2) 24...Qh2 (24...Qh2 25.Qg6 Rg6 26.Ke1 Nf4 27.Rd7 Qe2) 0–1. Szoelloesi – Pirisi, Budapest, 1982. (=1.Nf3 Nf6 2.b4 b6 3.Bb2 e6 4.b5 Bb7 5.e3 c5 6.c4 d5 7.Be2 Nbd7 8.0-0 Bd6 9.d3 dc4)

10.dc4 Qc7 11.Nbd2 0-0-0 12.Qc2 (12.Qa4 e5=) 12...g5 13.Ng5 Bh2 14.Kh1 Rdf8 (14...Rhf8 15.a4= (15.Nh7? Rh8 16.Bd3 Be5–+)) 15.Bf3 (15.Ngf3 Be5=) 15...Rhg8 16.Bb7 Kb7 17.f4 (17.Nh7? Rh8 18.Bf6 Nf6–+) 17...Ng4 (better is 17...Bg3!?=) 18.Qh7+/– Rg5 (18...Nb8 19.Qh5 Rg5 20.Qg5+–) 19.fg5 Qg3? (better is 19...Be5 20.Qe4 Kb8 21.Qg4 Rh8 22.Kg1 Bb2+–) 20.Bg7+– (20.Rf7? Rf7 21.Qf7 Nf2 22.Qf2 Qf2–+) 20...Rd8 (20...Rg8 21.Rf7 (worse is 21.Qg8 Ne3 22.Qc8 Kc8 23.Rg1 Bg1 24.Kg1 Qg2) 21...Rg7 A) 22.Qg7 Qh4 23.g3 Bg3 24.Kg2 Qh2 25.Kf3 Nge5 26.Qe5 Be5 27.Rd7 Kc8 28.Ra7 Ba1–+ (28...Qd2?! 29.Rf1-/+); B) 22.Rd7 Rd7 23.Qd7 Qc7 24.Qc7 Bc7 25.Rf1 Ne3 26.Rf7+–) 21.Nf3 Nf2 (21...Kc8 22.e4+–) 22.Rf2! Qf2 23.Qe4 (23.Nh2?! Qe3 24.Qh5 Kc7+–; 23.Kh2?! Qe3 24.Qh4 Qd3+–) 23...Kb8 24.Nh2 (24.Kh2 Qe2 25.Ne5 Qh5 26.Kg1 Qg5 27.Nd7 Rd7 28.Be5 Rc7+–) 24...Qe2 25.Nf3 Rg8 26.Qf4 e5 (26...Kc8 27.Qf7 Rg7 28.Qg7+–) 27.Qf7 Rg7 28.Qg7 e4 (28...Kc8 29.Ne5 Ne5 30.Qe5+–) 29.Qd7 (29.Qd7 ef3 30.Qe8 Kc7 31.Qf7 Kd6 32.Qf3 Qf3 33.gf3+–) 1–0. Kjaerstad,Eivind J – Pal,Antal, corr 3GMM–04, 1996.

10.dc4 Qc7 11.h3 0-0 12.Nbd2 a6 13.a4 e5 14.Nb1 e4 15.Nfd2 a5 16.Nc3 Rfe8 17.Qc2 Rad8 18.Rad1 Nf8 (18...Nf8 19.Ncb1 Qe7=+). Reg_UK – Jose Luis, ChessWorld.net, 2006.

10.dc5 Nc5 11.cd5 Bd5 12.h3 Nce4 (12...Rc8 13.Nc3 Bb7 14.Na4=) 13.Qd3 (13.Nbd2 0-0=) 13...Rd8+= 14.Rc1 Qb8 15.Nc3 (15.Qc2!?=) 15...Nf2-/+ 16.Qc2 (16.Kf2 Bf3) 16...N2e4 (16...Be4 17.Ne4 N6e4 18.Qc6 Ke7 19.Qc2-/+) 17.Nd5+= ed5 18.Qc6 Rd7 19.Qc8 Qc8 20.Rc8 Rd8 21.Rd8 Kd8 22.Nd4 (22.Ne5 Rf8+=) 22...Kc7 (22...Re8 23.Re1-/+) 23.Bf3 (23.Nf5 Bc5+=) 23...Bc5 (23...Re8 24.Rd1-/+) 24.Nf5 Rg8 (24...Rd8 25.Be5 Kd7 26.Ng7 Be3 27.Kf1+=) 25.Be5 (25.Be4 de4 26.Rd1+=) 25...Kb7 (25...Kd7 26.Bf6 Nf6 27.g4-/+) 26.Rd1 (better is 26.Be4!? Ne4 27.Bg7=) 26...g6-/+ 27.Nd4 Re8 28.Bf4? (better is 28.Bf6!? Nf6 29.Kf2-/+) 28...g5–+ 29.Bh2 (29.Be4 gf4 (worse is 29...de4 30.Bg5 Nd7 31.Rf1+/–; 29...Re4?! 30.Bg5 Ne8 31.Bf4=; 29...Ne4?! 30.Bh2–+) 30.Bf3 fe3–+) 29...Nc3 30.Rd3 (30.Rf1 Re3 31.Nb3–+) 30...Re3!! (30...Re3 31.Re3 Bd4–+) 0–1. Basanko,Viktor – Hudyakov,Sergey (2140), Stavropol Region Championship, 2011.

10.Nbd2 0-0 11 g3 Ne4 12 Nh4 Be7 13 Bf3 Bh4 14 Be4 de4 15 gh4 f5 16 f4 ef3 17 Nf3 Rf6 18 Rf2 Rg6 19 Rg2 Rg2 20 Kg2 Nf6 21 d5 Ng4 22 Qd3 ed5 23 cd5 Rd8 24 e4 fe4 25 Qe4 Qd7 26 h3 Nh6 27 Qe5 Bd5 28 Rh1 Bf3 29 Kf3 Rf8 30 Kg2 Qd2 0–1. Olofsson – Ketola, corr SSKK 2–777 1993–94.

10.Nbd2 cd4 11.ed4 0-0=.

10.cd5 ed5 11.h3 0-0 Black prepares c4 12.a4 Rfe8 13.Nbd2 c4 14.Qc2 Rac8 15.Rfc1 h6 (15...a6 16.Ba3=) 16.Ba3 Ne4 17.Ne4 Re4 18.Bd6 Qd6 19.Nd2 Ree8 20.Bg4 Rcd8 21.Bd7 Qd7 22.Nf3 Qd6 23.a5 Ra8 24.Ne5 Bc8 25.Qd1 (25.ab6 Qb6 26.Rcb1 Qf6+=) 25...g6 (better is 25...Bd7!?=) 26.Qf3+/– Be6 27.Qf6 (27.ab6 ab6 28.Nc4 Ra1 29.Nd6 Rc1 30.Kh2 Rd8+/–) 27...Qd8+= 28.Qd8 Red8 29.Nc6 Re8 30.Nb4 (30.Rc3 ba5 31.Ra5 Bd7+/–) 30...Rec8 (30...f5 31.Rc3+=) 31.Kf1 (31.e4!? de4 32.d5+/–) 31...Kf8 32.Ke2 Ke7 33.ab6 ab6 34.Ra6 Ra6 35.ba6 Ra8 36.Ra1 Kd7 (36...Kd6 37.f3=) 37.Kd2 (37.e4 Kd6 (worse is 37...de4 38.d5+/–) 38.e5 Kc7+=) 37...Ra7 (37...Kd6 38.Kc3=) 38.Kc3 (38.e4 Kd6 (38...de4? 39.d5+–) 39.e5 Kc7+/–) 38...Kd6 (38...f5 39.f3+=) 39.f3 f5 40.g4 g5 (40...fg4 41.hg4 b5 42.e4 de4 43.fe4 Bg4 44.Rf1+/–) 41.Re1 (41.gf5 Bf5 42.Nd5 Kd5 43.e4 Kc6 44.ef5 Kd5+–) 41...Rf7 42.Ra1 Ra7 ½–½. Schroeder,Ralf (1635) – Lawrenz,Sebastian (1835), Berlin GER, Fruehling Open–B, 2014.

10.h3 0-0 11.Nc3 dc4+= 12.Nd2 (better is 12.dc5!? Qc5 13.a4=) 12...cd4–+ 13.ed4 Nd5 (13...Bd5!?–+) 14.Nc4+= Bh2 15.Kh1 Nf4 16.Bf3 Bf3 (16...Qc4 A) 17.Kh2 Bf3 18.Qf3 Nd3-/+ (18...Qd4?! 19.Rad1 Qb4 20.Rd7 Qb2 21.Rb1=); B) 17.Bb7 Rad8 18.Qc2+/–) 17.Qf3 Qc4 18.Kh2 Nd3 (18...Qd4?! 19.Rad1 Qb4 20.Rd7 Qb2 21.Rb1=) 19.Ba3 Qc3 20.Bf8 Rf8 21.Qe3 (21.Rfd1 Qc7 22.Kg1 Nb4-/+) 21...Qc7 22.Kg1 Nb4 23.Rfc1 Qb8 24.Rc4 Nd5 25.Qc1 N7f6 26.Qc2 Qf4 27.Rc1 g5 28.Qd3 Ne4 29.R1c2 Nd6 30.Ra4 Rc8 (30...a6 31.g3 Qf6 32.Ra6–+) 31.Rc6 (31.Rc8 Nc8 32.g3 Qc1 33.Kg2 Qb2–+) 31...Rc6 32.bc6 Qc1 33.Kh2 a5 34.Qa6 Qf4 35.Kg1 (35.Kh1–+) 35...Qc1 (better is 35...Nc3 36.Ra5 ba5 37.c7 Qc1 38.Kh2–+) 36.Kh2 Qc6 37.Ra5 Qc2 (37...Qc7 38.Ra3 Nb5 39.Rg3 Nd4 40.Kg1–+) 38.Ra3? (better is 38.Rd5 ed5 39.Qb6–+) 38...Qf2 39.Rg3 (39.Rf3 Qd4 40.Qa7 Kg7–+) 39...Ne4 (39...Ne4 40.Rf3 Qd4–+) 0–1. Djurisic,Dusan (1895) – Cvetkovic,Srdjan (2345), Beograd SER, City Ch, 2014.

10.h3 0-0 11.dc5 bc5 12.cd5 Nd5=.

10.h3 0-0 11.Nbd2 Rac8 12.Rc1 Rfe8 13.a4 Qb8 14.Bd3 (14.dc5 bc5 15.cd5 ed5=) 14...e5 (14...cd4 15.Nd4 (15.Bd4? e5–+) 15...Nc5 16.Bc2+=) 15.de5= Ne5 16.Ne5 (16.Be5 Be5 17.cd5 Nd5 18.Ne5 Qe5=) 16...Be5 17.Be5 (17.Qc2 Bb2 18.Qb2 Rcd8 19.cd5 Bd5=) 17...Re5 (17...Qe5 18.Qf3=) 18.Nf3 Rh5 19.Nh2 Rd8 20.Qe2 (20.Ng4 Ng4 21.Qg4 Qe5=) 20...Qa8 (20...Qc8 21.cd5 Rhd5 22.Rfd1=) 21.f3 (21.Ng4 Ne8 22.cd5 Rhd5=) 21...Re5 (21...Qb8 22.f4=) 22.cd5 Bd5 (22...Nd5 23.Ng4 Re7 24.Bc4=) 23.e4 Bb7 24.Bc4 Rd4 (24...Re7 25.Rfd1=) 25.Qa2 (25.Rfd1 Qd8=) 25...Re7 26.Rfd1 Qd8 27.Rd4 Qd4 (27...cd4 28.Nf1=) 28.Qf2 Qd8 29.Nf1 Rd7 (29...Qd6 30.Qg3 Qd4 31.Kh2+=) 30.Rc2 (30.Qg3 Nh5 31.Qe5 Nf6+=) 30...Qe7 31.Qg3 h6 (31...Bc8 32.Rd2+=) 32.Ne3 Nh5 (32...Bc8 33.Rc1 Rd8 34.Re1+=) 33.Qf2 (33.Qb8 Kh7+=) 33...Nf4 (33...Qe5 34.Ra2=) 34.Rd2 (34.Nf5 Qg5 35.Kh2 Ne6=) 34...Rd2= 35.Qd2 g6?? (better is 35...Bc8=) 36.Ng4+– Ne6 (36...Qc7 37.Nh6 Kf8 38.Nf7+–) 37.Nh6 (better is 37.Qh6!? Nf8 38.e5 Nd7 39.Qg6 Kf8+–) 37...Kg7 (37...Kf8 38.Be6 Qe6 39.Qd8 Qe8 40.Qc7+–) 38.Ng4 Ng5 (38...Kf8 39.Qh6 Ke8 40.Be6 Qe6 41.Qh8 Ke7 42.Qb8+–) 39.Qc3 (better is 39.h4!? Nh7 40.Qh6 Kh8 41.e5+–) 39...f6 40.Qd3 (40.a5 ba5 41.Qa5 Bc8+–) 40...Ne6 (better is 40...Nf7!?+/–) 41.Qd2 g5 (41...Ng5 42.h4 Nf7 43.Bf7 Kf7 44.Qh6+–) 42.Ne3 (better is 42.e5!? f5 43.Be6 Qe6 44.Qg5 Qg6 45.Qf6 Qf6 46.Nf6+– (46.ef6?! Kf7 47.Ne5 Kf6+/–)) 42...Nd4 43.Ng4 (43.a5 Qd8 44.Qd3 ba5+/–) 43...Qd6 (43...Ne6 44.e5 f5 45.Be6 Qe6 46.Qg5 Qg6 47.Qf6 Qf6 48.Nf6 c4+–) 44.Kf2 (44.Qe3 Qg3+/–) 44...Nb5 45.Qe3 Nd4?? (better is 45...Nc7 46.e5 Qd4 47.Qd4 cd4 48.Nf6 Ba6 49.Ba6 Na6+/–) 46.e5+– Qd8 (46...fe5 47.Qg5 Kf8 48.Qg8 Ke7 49.Qf7 Kd8 50.Qb7 a5+–) 47.ef6 Kg6 48.Qd3 Be4 49.Qe4 Nf5 50.Ne5 (50.Bd5 c4 51.Qe6 Qd5 52.Qd5 Ng3 53.Qg8 Kf5 54.f7 Ne4 55.Ke3 Ke6 56.f8Q Kd7 57.Qd5 Kc7 58.Qfd8) 50...Kf6 51.Ng4 Kg6 52.Qe6 Kh7 53.Nf6 (53.Qf5 Kh8 54.Bd5 a5 55.Nf6 Qe7 56.Qg6 Qe1 57.Ke1 b5 58.Qh7) 53...Kg6 54.Qf7 (54.Qf7 Kh6 55.Qh7) 1–0. Barra,Horacio – Guerra,Nuno, POR–ch sf Faro, 1998.

10.h3 Rc8 11.Nbd2 0-0 (11...cd4 12.Nd4 0-0 13.cd5 Bd5 14.Bf3=) 12.Rc1 Qb8 13.a4 (13.a3 Rfd8=) 13...Ne4 (13...Rfd8 14.dc5 Bc5 15.cd5 Bd5 16.Nc4=) 14.Ne4 (14.cd5 ed5 15.dc5 bc5=) 14...de4 15.Nd2 f5 (15...cd4 16.ed4 Rfd8 17.f3=) 16.Nb3 e5 (16...cd4 17.ed4 Qc7 18.a5=) 17.d5+= Rf6 (17...Qc7 18.Qc2=) 18.a5 Rcf8 (18...a6 19.ba6 Ba6 20.Qc2+=) 19.a6 Bc8 20.Nd2 Rh6 (20...Rg6 21.Qc2+=) 21.Kh2 (21.Qc2 Qc7+=) 21...Nf6 22.Rh1 (22.Kh1 Rd8+=) 22...Qc7 (22...f4 23.Kg1 Bf5 24.Qc2=) 23.Kg1 f4 (23...Rh4 24.Qb3=) 24.ef4+= e3 25.fe3 ef4 26.e4 f3 (26...Re8!?+/–) 27.Bf3+– Bf4 (27...Nd7 28.Bg4+–) 28.Qe2 Nh5 (28...Be5 29.Be5 Qe5 30.Rd1+–) 29.Bh5 Rh5 30.Rf1 (30.Qh5 Deflection from e3 30...Be3) 1–0. Raemisch – Sachse, corr Grd–Man, 1973.

10.h3 cd4!? 11.cd5 de3 12.de6 ef2 13.Rf2 fe6 -/+.

10.h3 e5 11.cd5 Nd5 Black gets in control 12.Nbd2 (12.de5 Ne5 13.Nbd2 0-0=) 12...0-0 (12...ed4 13.ed4 0-0 14.Re1=) 13.Nc4 (13.de5 Ne5 14.Nc4 Nf3 15.Bf3 Rfd8 16.Nd6 Qd6=) 13...ed4 14.Nd6 Qd6 15.ed4 Nf4 16.Re1 (16.dc5!? Qd1 17.Rfd1 Ne2 18.Kf1 Nc5 19.Ke2 Rae8 20.Kf1 Bf3 21.gf3=) 16...Qg6-/+ The mate threat is Qxg2 (16...Ne2?! 17.Qe2 Qf6 18.Ne5 Ne5 19.Qe5+=) 17.g3 (17.Nh4 Qg5 18.Bg4 f5 19.Nf5 Rf5-/+) 17...Nh3 18.Kf1 Qh6 (18...a6 19.dc5 Nc5 20.Qd4-/+) 19.Nh4 (19.d5 a6-/+) 19...Qf6 Threatening mate... how? 20.Bf3 g5 (better is 20...Rfe8!? 21.Re8 Re8-/+) 21.Qd2+= Bf3 22.dc5 Qb2 (better is 22...Qd8 23.Qc3 f6 24.Nf3 Nc5= (worse is 24...bc5 25.Kg2 g4 26.Qc4 Rf7 27.Qg4 Ng5 28.Bf6 Qf6 29.Qg5 Qg7 30.Qg7 Rg7 31.Rac1+–)) 23.Qb2+– gh4 24.c6 (24.Re3 Bg4 25.Qd4 h5+/–) 24...hg3 25.fg3 Nc5 26.Qd4 Ne6 (26...Ng5 27.Qf4 f6 28.Rac1=) 27.Qf6+/– Bd5? (better is 27...Bg4+/–) 28.Re5+– Rad8 (28...Rfd8 29.Qh4 f6 30.Rd5 Rd5 31.Qh3+–) 29.Rc1 Nc5 30.Rc5 (better is 30.Qh6 Be4 31.Qh3+–) 30...bc5+/– 31.Qh4 (31.Rh5!? Be6 32.Qh6 (worse is 32.Rc5 Rd1 33.Kg2 Rfd8-/+) 32...Rd1 33.Kg2+=) 31...Be6= 32.Rc5 Rfe8 (32...Rd1 33.Kg2 Rd2 34.Kf1 Re8-/+) 33.Rc1?? (better is 33.Qb4=) 33...Rd2–+ Do you see the mate threat? 34.Ke1?? (better is 34.g4 Rf2 35.Qf2 Nf2 36.Kf2 Bg4 37.a4–+) 34...Rf2 (better is 34...Ra2 35.Qe4 Nf2–+) 35.Kd1 Bf5?? (35...Ra2 36.Rc2 Bb3 37.Qg4 Kh8 38.Qd4 f6 39.Qf6 Kg8–+) 36.c7?? (36.Rc5 Re4 37.Qd8 Kg7 38.Rf5 Rf5 39.c7 Nf2 40.Kd2+=) 36...Rf1 (better is 36...Ra2 37.Rc2 Bc2 38.Kd2 Bf5 39.Kc3 Rc2 40.Kd4 Re4 41.Qe4 Be4 42.Ke4 Ng5 43.Kd5 Ne6–+) 37.Kd2+= Rf2 38.Kc3 Rf3 (38...Ra2 39.g4 Re3 40.Kd4 Re4 41.Kd5 Nf4 42.Kc6 Re6 43.Kc5 Re5 44.Kc6 Be4 45.Kd7 Rd2 46.Kc8 Re8 47.Qd8 Red8 48.cd8R Rd8 49.Kd8–+) 39.Kb2 (39.Kb4 Bc8+/–) 39...Rc8 (39...Bc8 40.Rc3 Re2 41.Rc2+=) 40.g4 (40.Qd8 Kg7 41.Qd4 Kg8 42.Qa7 Rg3+–) 40...Rf2 (better is 40...Be6!?+=) 41.Ka1+– Be6 42.Qh3 Ra2 43.Kb1 Ra4 44.Rc5 Rg4 45.Qa3 Bd7 (45...Rg1 46.Kc2 Rg2 47.Kc1 Rg1 48.Kd2 Rg2 49.Ke1+–) 46.Qc3 (46.Qa7 Rb4 47.Kc2 Kf8+–) 46...Be6 (46...Rg1 47.Kc2 Rg2 48.Kb3 Be6 49.Kb4+–) 47.Qf6 (47.Qa5 Rg1 48.Kc2 Rg2 49.Kd3 Rg3 50.Kd4 Rg4 51.Ke3 Rg3 52.Kf4 Rg4 53.Kf3 Kf8+–) 47...Rg6 48.Rg5 Kf8 (48...Re8 49.Rg6 hg6 50.Qd4+–) 49.Rg6 hg6 50.Kb2?? (50.Qd8 Kg7 51.Qd4 Kh6 52.Qa7 Bf5 53.Kb2+–) 50...Ke8+= 51.Qc3 (better is 51.Qf4+=) 51...Kd7? (51...g5 52.Kc1+=) 52.Qc6 (52.Qd4 Kc7 53.Qa7 Kd8+–) 52...Ke7 53.Kc3 (53.Qc5 Kd7 54.Qd4 Kc7 55.Qa7 Kd8+–) 53...f5 (better is 53...g5!?+/–) 54.Kd4+– Kf7?? (54...Bd7 55.Qc5 Kf7+–) 55.Ke5 Re8 (55...Kg7 56.Ke6 Kh6+–) 56.Qe8!! (56.Qe8 Ke8 57.Ke6 Kf8 58.Kf6 Kg8 59.c8Q Kh7 60.Qc7 Kh6 61.Qh2) 1–0. Danek,Vaclav (1835) – Jenc,Milan (1660), Klatovy op–B, 1997.

9.Qc2 0-0 (9...dc4 10.Qc4 a6 A) worse is 11.ba6 Ba6 (11...Ra6?! 12.Qc2=) 12.Qa6 Ra6 13.Ba6 0-0-/+; B) 11.Qf4=) 10.d3 Re8 11.Nbd2 Nf8 12.Ne5 Qc7 13.f4 N6d7 14.Ndf3 (14.Bh5 Ne5 15.Be5 Qd7=) 14...f6 15.Ng4 Bd6 16.Rac1 d4 17.ed4 Bf4 18.Nd2 (better is 18.Rce1!?=) 18...cd4-/+ 19.Bd4 e5 (19...f5 20.Nf2-/+) 20.Bf2 (20.Bc3 Ne6+=) 20...Nc5 (20...Ne6 21.Rce1-/+) 21.g3 (21.Rcd1 Nfe6 22.Bf3 f5 23.Bb7 Qb7+=) 21...Bg5 (21...Bd2 22.Qd2 Nfe6 23.Be3-/+) 22.h4 (22.Rcd1 Bd2 23.Rd2 Nfe6-/+) 22...Bd2-/+ 23.Qd2 Rad8 24.Bc5 Qc5 25.Qe3 Qa3 26.Bf3?? (26.Rcd1 Nd7+= (26...Qa2?! 27.Ra1 Qb2 28.Ra7=)) 26...Bf3 (better is 26...Rd3 27.Qe1 Bf3–+) 27.Qf3? (better is 27.Rf3 Rd3! 28.Qd3 Qc1 29.Rf1-/+) 27...Rd3–+ (27...Qd3?! 28.Ne3–+) 28.Nf6 (28.Qe2 Rg3 29.Kh1 Rh3 30.Nh2 Rh4–+) 28...gf6 29.Qg4 Kf7 (better is 29...Kh8 30.Kg2–+) 30.Qh5 (30.Kg2 Ng6 31.Kh2 Rg8–+) 30...Ke7 (30...Ng6!? 31.Kh2 Rg3 32.Qf5–+) 31.Rf2 (31.Qf5 Rg3 32.Kh2–+) 31...Qc1 (31...Qc1 32.Kg2 Qc4–+) 0–1. GuestBKQH – GuestGYDQ, freechess.org, 2017.

9.d3 dc4 10.dc4 Qc7 11.Nbd2 0-0 12.Qc2 Ng4 (12...a6 13.Rfd1=) 13.Bd3 h5 (13...f5 14.Rfd1=) 14.h3 Nge5 15.Bh7 Kh8 16.Be4 Nf3 17.Nf3 Bf6 18.Bf6 Nf6 19.Bb7 Qb7 20.Ne5 Qc7 (20...a6 21.Nc6+=) 21.f4 (21.Nc6 a6+=) 21...a6 22.a4 ab5 23.ab5 Ra1 24.Ra1 Qb7 25.Ra6 Rd8 26.Nc6 Rd7 27.Kh2 (better is 27.e4+/–) 27...Rc7? (27...Ng8!?+/–) 28.Qa2 (28.Qa4 Kh7+–) 28...Rc6 (better is 28...Kh7+–) 29.Ra7 Qc7 30.Rc7 Rc7 31.Qa8 Kh7 32.Qb8 Rd7 33.Qb6 Rd2 34.Qc5 (34.Qc5 Kg6 35.Qg5 Kh7 36.b6+–) 1–0. Kreuzer,U – Oberling, Vereinspokal, 1992.

9.d4 0-0 10.Nbd2 (--> 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2).

9.cd5 ed5 10.Nc3 0-0 11.d4 Bd6 12.Qc2 Qe7 13.Rfd1 c4 14.Nh4 g6 15.Nf3 Rae8 16.Nd2 Qe6 17.a4 Ng4 18.Bg4 Qg4 19.a5 f5 20.h3 Qh4 21.a6 Ba8= 22.Nf3 Qh6 23.Ba3 Ba3 24.Ra3 g5 25.Nh2 g4 26.hg4+= f4 27.ef4 Rf4 28.Ne2 Rfe4 29.Ng3 Re1 30.Re1+/– Re1 31.Nhf1 Nf6 32.Qf5 (32.Qf5 Qg6 33.Re3 Re3 34.Ne3 (34.fe3?! Qf5 35.gf5 Ne8=) 34...Qf5 35.Ngf5+– (35.gf5?! h5+/–)) 1–0. pcmvr (2825) – pocketknife (2390), net–chess.com, 2007.

9.cd5 Bd5 10.Nc3 Bb7 11.d4 0-0 12.Qa4 (12.Qc2 Bd6=) 12...Qc7 (12...cd4 13.Qd4 Qb8 14.Rfd1=) 13.Rac1 Rfd8 (13...Bd6 14.Rfd1=) 14.Rfd1 h6 (14...Bd6 15.h3=) 15.h3+= Rac8 16.Nb1 (16.a3 cd4 17.Ne4 Nc5 18.Nc5 A) worse is 18...Bc5 19.ed4 (19.Nd4?! Qe5+=; worse is 19.Bd4 Ne4+=) 19...Qf4 20.Qa7 Bf3 21.Bf3+/– (worse is 21.dc5 Be2 22.Rd8 Rd8 23.Qb6 Rd2-/+; 21.gf3 Bd4 22.Rc8 Qg3 23.Kh1 Qh3 24.Kg1 Qg3 25.Kh1 Qh4 26.Kg2 Qf2 27.Kh3 Rc8 28.Bd4 Qe2–+); B) 18...bc5 19.Bd4 Bd5=) 16...Qb8 (16...Bd5 17.Nbd2=) 17.Nbd2 Qa8 (17...cd4 18.Rc8 Rc8 19.Bd4=) 18.Qa3 (18.Nc4 cd4 19.Bd4 Nc5=) 18...Bf8 (18...Nd5 19.Qd3=) 19.Qb3 (19.dc5 Be7=) 19...Bd5 20.Bc4 Bc4 (20...a6 21.ba6 Bc4 22.Nc4 Qa6 23.a4=) 21.Nc4 cd4 (21...a6 22.a4=) 22.Nd4 Nc5 (22...a6 23.a4+=) 23.Qc2 Qe4 24.Qe4 (24.Qe2 Rd7+=) 24...Nfe4 25.Nc6 (25.Ba1 Na4+=) 25...Rd1= 26.Rd1 Ra8 (better is 26...Na4!?=) 27.f3+/– Ng3 (27...Ng5!?+/–) 28.Be5+– Nf5 29.Bb8 Ne7 30.Rd8 Nc6? (better is 30...Nd5+–) 31.bc6 Na6 32.Ne5 Rb8 (32...Nb8 33.Nd7 Nc6 34.Ra8+–) 33.Rb8 Nb8 (33...g5 34.Ra8 Nc7 35.Rc8+–) 34.c7 (34.c7 Na6 35.c8Q+–) 1–0. DEFFM – GuestDYJL, freechess.org, 2018.

9.ed4 dc4 10.0-0 Rc8-/+ 11.Nfd2 Bd5 (11...Nd5 12.Nc4 Qg5 13.h4 Qh4 14.Nbd2-/+) 12.Qa4=+ Will c4 fall? 12...Rc7 (12...a5!?=+) 13.Nc4= Qa8 14.Ne3 Be4? (better 14...Bd6!?+=) 15.Nc3 Bb7 16.Rac1 Bd6 (16...h5 17.h3+–) 17.Ba3+– Bf4 18.g3 Be3 19.fe3 Bh1? (better 19...Qd8+–) 20.d5 Nd5 (20...Bd5 21.Nd5 Nd5 22.Rc7 Nc7+–) 21.Nd5 (21.Kh1?! Nc3 (21...Rc3? 22.e4+–) 22.Bf3 Na4 23.Ba8 Nac5=) 21...Qd5?? (21...Rc1 22.Rc1 Bd5+–) 22.e4 Rc1 (22...Qe5 23.Rc7 Qc7 24.Rc1+–) 23.Rc1 (23.ed5 Rf1 24.Kf1 Nc5 25.Qa7 0-0 26.Qb6 Nd7+–) 23...Qa8 (23...Qb7 24.Qa7 Nc5 (24...Qa7?? 25.Rc8) 25.Qb7 Nb7 26.Rc8 Kd7 27.Rh8 Be4+–) 24.Qa7!! Nc5 (24...Qa7 25.Rc8 Mate attack) 1–0. DEFFM – GuestZKZW, freechess.org, 2019.

9.ed4 dc4 10.Bc4 Bb4 11.Nbd2 Bf3 12.Qf3 Bd2 13.Kd2 Ne5-/+.

9.ed4 dc4 10.Nbd2 Bb4 11.Rc1 Rc8 12.Rc4 Rc4 13.Bc4 Bf3 14.gf3 Qc7=+.

9.Qd4 dc4 10.0-0=.

9.Qd4 Bc5 10.Qf4 Qb8 (10...0-0 11.Nbd2=+) 11.Qg5 (11.Qb8 Rb8 12.0-0 0-0=) 11...0-0 12.cd5 Bd5 (12...h6!? 13.Qh4 Nd5=+ (worse 13...Bd5 14.Nc3=)) 13.0-0 h6 14.Qh4 Be7 15.Nc3 Qd8 16.Nd5 Nd5 17.Qg3 Bf6 18.Nd4 Qc7 19.Qc7 Nc7 20.Rac1 Nc5 21.Ba3 Be7 (better 21...a6!? 22.ba6 N7a6+=) 22.Nc6+- Bd6 23.Rfd1 Nd5 24.Bf3 f5? (better 24...a6 25.Bd5 ed5 26.Rd5 ab5+/-) 25.Bd5 (25.Bd5 ed5 26.Rd5+-) 1-0. onur604 (2320) - Bogdan_asmayev (2170), Casual Rapid game, lichess.org, 2021.

9.Bd4 Rc8=+.

8.0-0 0-0 (--> 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

8.0-0 0-0 9.d3 Nbd7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

8.0-0 Nbd7 9.d4 0-0 10.Nbd2 Qc7 11.a4 a5 12.Rc1 Rac8 13.cd5 ed5 (13...Bd5 14.Qc2=) 14.Bd3 (14.dc5 bc5 15.Nd4 Rfe8+=) 14...c4= 15.Bf5 Qd6 16.Ne5 Rc7 17.e4 (better 17.Rc3+=) 17...Qb4?? (better 17...Re8=) 18.Nd3!+- cd3 19.Rc7 Qb2 20.Rb7 Ne4 (20...Rb8 21.Rb8 Nb8+-) 21.Ne4 (21.Bd7?! Nd2 22.Qc1 Qb4+=) 21...de4 22.Rd7 Bb4 23.Be4 d2 24.Bd5 Qc3 (24...Kh8 25.Bf7 Rc8 26.Bb3+-) 25.Qh5 g6 (25...Qd3 26.Rf7 Kh8 27.Rf8 Bf8+-) 26.Bf7! Rf7 27.Qd5 (27.Qd5 Qb3 28.Qb3 Kg7 29.Qf7 Kh6 30.f4 Be7 31.Qe7 d1Q 32.Qh7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0 Nbd7 9.d4 0-0 10.Nbd2 Re8 11.Ne5 Qc7 12.f4 Ne4 13.Ne4+= de4 14.Nd7 Qd7 15.dc5 bc5 16.Be5 Rad8 17.Qd6 Qd6 18.Bd6 Rd6 19.Rfd1 Red8 20.a4 f5 21.a5 Rd1 22.Rd1 Rd1 23.Bd1 Kf8 24.Kf2 Ke7 25.g4 g6 26.Kg3 Kd6 27.Bc2 h6 28.h4 e5 29.gf5 gf5 30.Ba4 ef4 (30...Ba8!?+/-) 31.Kf4 Ke6? (31...Bc8!?+/-) 32.b6 (32.a6 Ba8 33.Bd1 Kf6+-) 32...ab6 33.ab6 Ba6? (better 33...Ba8+-) 34.Bc6 Kd6 35.Bd5 Bc8 (35...Kd7+-) 36.b7 Kc7 37.bc8Q (37.bc8Q Kc8 38.Kf5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0 Nbd7 9.d4 Qc7 10.cd5 Nd5 (10...ed5 11.dc5 bc5 12.h3=) 11.dc5+= Bc5 12.Bg7 (12.Nc3 0-0+=) 12...Rg8= 13.Bd4 Rd8 (13...0-0-0 14.g3+=) 14.g3 (14.Nc3 Nc3 15.Bc3 Be3=) 14...Bd4 (14...Ne3 15.fe3 Rg3 16.Kf2 Nf6+=) 15.Qd4+= Nc5 (15...N7f6 16.Rd1+=) 16.Qh4 (16.Nbd2 e5 17.Qc4 Ne6+/–) 16...f5 (16...Qe7 17.Qh7 Nf6 18.Qc2+/–) 17.Rd1 Qg7 18.Na3 Ne4 (18...Qe7 19.Qh5 Qf7 20.Ne5 Qh5 21.Bh5 Ke7 22.Bf3+/–) 19.Nc4 (19.Nd4 Qe7 20.Qh6 Nec3 21.Bh5 Kd7+/–) 19...Nec3 (19...Qe7 20.Qh5 Qf7 21.Qh3+–) 20.Nd4 Ne2 21.Ne2 Qg4 22.Qh7 (22.Qg4 Rg4 23.Rac1 Ke7+/–) 22...Rg7 23.Qh6 (23.f3 Qg3 24.hg3 Rh7+/–) 23...Rg6 24.Qh7 Rg7 25.f3 Rh7 (25...Qf3 26.Qh8 Double attack (26.Qg7 Deflection; 26.Qh8 Decoy)) 26.fg4+– fg4 (26...a6 27.a4+–) 27.e4 Nf6 (27...Re7 28.e5 (28.ed5?! ed5 29.Na5 Re2 30.Nb7 Rd7=) 28...Red7 29.Nd6 Ke7 30.Nd4+–) 28.Nd6 Kf8 29.Nf4 Rd6 (29...Bd5 30.ed5 (30.Nd5?! ed5 31.e5 Nd7+/–) 30...Rd6 31.Ne6 Kg8 32.Rac1+–) 30.Rd6 Ke7?? (30...Ne4 31.Ne6 Ke7 32.Rd7 Kd7 33.Nf8 Kd6 34.Nh7 Bd5+–) 31.Re6 Kf7 (31...Kd7 32.Rd1 Kc8 33.e5+–) 32.Rc1 Be4 33.Rc7 (33.Rc7 Kg8 34.Rh7 (34.Rf6?! Rc7 35.Rd6 Kf7+=) 34...Bh7 35.Rf6+–) 1–0. DEFFM – TDiaz, freechess.org, 2018.

8.0-0 Nbd7 9.cd5 ed5 10.Nc3 0-0=.

8.a4 0-0 9.a5 dc4 10.Na3 Nbd7 11.Nc4 Bd5 12.0-0 Qc7 (12...a6 13.ba6 b5 14.Nce5 Ne5 15.Ne5=) 13.Nfe5 Ne5 14.Be5 Qb7 15.f3 Bc4 16.Bc4 Nd5 17.f4 Rfd8 18.Qf3 Qd7 (18...Bd6 19.Bb2+/-) 19.f5 ef5 20.Ra3 Nf6 (20...Nc7!? 21.Rd3 Qc8+-) 21.ab6+- Qd2 22.b7 (22.b7 Rab8 23.Bb8 Rb8 24.Qf5+-; 22.ba7?! Qb4 23.Rd3 Re8+/-) 1-0. onur604 (2320) - Exegol (2180), Casual Rapid game, lichess.org, 2021.

8.d4 0-0 9.Nbd2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nbd7 13.0-0 Ne4 (13...Qc7 14.Rc1=) 14.Ne4 (better 14.dc5!? Nec5 15.Bg7+/-) 14...de4= 15.Nd2 cd4 16.Bd4 Bf6 (16...e5 17.Bc3= (17.Be5? Ne5 18.Qe5 Bf6-+)) 17.Nb3 Bd4 (17...e5 18.Bc3=) 18.Qd4 Nf6 (18...Qe7 19.Ra1=) 19.Rd1+/- Qc7? (better 19...Qd4 20.Rd4 Ba8+/-) 20.Qd6+- Qb8 21.Qb6 h5 (21...Qc8 22.Nc5 Ba8 23.Qd6+-) 22.Na5 Ba8 23.Qb8 Rb8 24.c5 Bd5 25.c6 Ne8 26.Rb1 Ra8 (26...Rb6 27.Bh5 Kf8 28.Be2+-) 27.b6 Ra5 (27...g6+-) 28.b7 (28.b7 Bc6 29.b8Q+-) 1-0. onur604 (2320) - Arfans_PercasiCMS (2300), Casual Rapid game, lichess.org, 2021.

8.cd5 ed5 9.0-0 0-0 10.d4 c4 11.Nc3 a6 12.a4 Nbd7 13.Qc2 Qc7 14.ba6 Ba6 15.Qf5 Qc6 16.Rab1 Rac8 17.Rfc1 Rfd8 18.g3 g6 19.Qg5 Qe6 20.Rc2 Ne4 21.Qh6 Qf5 22.Rcc1 Ndf6 23.Ne4 Ne4 24.Rf1 b5 25.Ne5 Bg5 26.Ng4 Nd2 27.h4 Bh6 28.Nh6 Kg7 29.Nf5 gf5 30.ab5 Bb5 31.Bc3 Nb1 32.Rb1 Ba4 33.Ra1 Ra8 34.Bf3 Bc6 35.Kf1 Rdb8 36.Rc1 Ra3 37.Bd1 Ba4 38.Ke1 Bd1 39.Kd1 Rbb3 40.Kd2 Kg6 41.f3 f6 42.Rc2 Rb1 43.Bb2 Rd3! 44.Ke2 Rh1 0–1. Trkn – ARCTIC DUDE, itsyourturn.com, 2001.

8.cd5 Bd5?! 9.Nc3 Bb7 10.0-0 0-0 11.Qc2 Nbd7 12.e4 Qc7 13.g3 Rad8 14.Rae1 h6 15.Qa4 Qb8 16.Bc4 Ne8 17.Bb3 Kh8 18.Ne2 e5 19.d3 g5 20.g4 Ng7 21.Bc3 Bd6 22.Rd1 Qa8 23.h3 a5 24.a3 Rde8 25.Nd2 f5 26.Nc4 Bc7 27.gf5 Nf5 28.ef5 Bh1 29.f3! Bf3 30.Rf2 Be2 31.Re2 Rf5 32.Re4 Qd5?? 33.Ne5 1–0. mtr – Nanatr, Internet, 2001.

7.a4 e5 8.a5 e4 9.a6 Bc8 10.d4 (10.Ng1 d5=) 10...Bg4 (10...ef3 11.Qf3 d5 12.dc5 bc5 13.Bf6 Qf6 14.Qf6 gf6 15.cd5+=) 11.dc5 (11.h3 Bf5 12.Nh4+=) 11...Nbd7?? (11...ef3 12.gf3 Be6 13.cb6 Qb6 14.Bf6 gf6+=) 12.c6 (12.h3 Bf3 13.gf3 dc5 14.fe4+=) 12...Nc5? (12...Ne5 13.Be5 Bf3 14.Bf6 Qf6+–) 13.h3+– Bh5 14.g4 Ng4 15.hg4 Bg4 16.Qd5 (16.Nbd2!? ef3 17.Nf3+/–) 16...Bf3= 17.c7 Qc8 (17...Qc7 A deflection 18.Qa8) 18.Qc6 Nd7?? (better is 18...Ke7 19.Rh2 Bg4+=) 19.Bh3+– (19.Bh3 Bh1 20.Bd7 Ke7 21.Bc8 Rc8 22.Qb7+–) 1–0. Kruml,David – Jurasek,Miroslav, Morava–ch U18, 1991.

7.a4 Be7 8.d4=.

7.d3 Nbd7 8.Be2 Be7 9.0-0 h6 10.Nbd2 g5 (10...0-0 11.a4=) 11.Re1 (11.Ne1!?+=) 11...g4= 12.Nh4 Rg8 13.g3 Ne5 14.e4 Nfd7 15.Ng2 h5 16.f4 (16.Ne3 Bf6=) 16...gf3=+ 17.Nf3 Nf3 18.Bf3 Ne5 (18...h4 19.Bh5 Nf6 (19...hg3? 20.Bf7 Kf7 21.Qh5 Kf8 22.Nf4 gh2 23.Kh2+-) 20.gh4 e5=+ (20...Nh5 21.Qh5 Bh4 22.Rf1+/-)) 19.Bh5+= Qd7 20.Rf1 Rg7 21.Nf4 Bg5 22.d4?? (22.a4 a5+=) 22...cd4 (better 22...Nc4 23.Qb3 Nb2 24.Qb2 cd4-/+) 23.Bd4+= 0-0-0 (23...Rh7 24.Nh3 Qe7 25.Qe2+=) 24.Qa4 (24.a4 Be4 25.a5 Qc7+=) 24...Kb8+= (worse 24...Be4 25.c5 bc5 26.Be5 de5 27.Qe4 Qd4 28.Qd4 cd4 29.Ng2+/-) 25.Rad1 Qc7 Attacking the backward pawn on c4 26.Rc1 (26.Qc2!?+=) 26...Bf4 27.Rf4 Nd3 28.Rff1 (better 28.Rh4 Rh7 29.Rf1=+) 28...Nc1-+ 29.Rc1 e5 (29...Rh7 30.Bf3-+) 30.Be3 f5?? (30...Rh8 31.Be2-+) 31.c5? (better 31.ef5!? Qe7 32.Bg6=) 31...dc5-/+ 32.ef5 Rgd7 (32...Qd6 33.Qc4-/+) 33.Re1 (33.Qc4 Bd5 34.Qe2 Ba8-/+) 33...Rd3 34.Qc4 Qd6 (34...Ba8 35.Qf7 R3d7 36.Qf6-/+) 35.Bf7 (better 35.Bg5 Rh8 36.Re5=) 35...Bd5?? (35...Rd1 36.Rf1-+) 36.Bd5?? (better 36.Qd3 Bf7 37.Qd6 Rd6 38.Bg5 Ba2 39.Re5 Rd1 40.Kg2+-) 36...Qd5 (36...Rd5 37.g4 Rd1 38.Rd1 Qd1 39.Kg2 Qb1-/+) 37.Qg4? (better 37.Qd5!? R3d5 38.g4=) 37...Rc3 (37...Ra3 38.Bf2-+) 38.f6 (38.Qe2 Ra3 39.Qg2 Qg2 (worse 39...Ra2 40.Qd5 Rd5 41.f6=+) 40.Kg2 Ra2 41.Kg1 Kb7-+) 38...Rc4 (38...Rc2 39.Bf2 Ra2-+ (worse 39...Qa2 40.Qf5 Qb2 41.Qe5 Qe5 42.Re5=)) 39.Qf3?? (better 39.Qf5 Re4 40.Qf3-/+) 39...Qf3 40.Bf2 (40.f7 Rc2 41.Bd2 Rcd2 42.Re2 Rd1 43.Re1 Re1) 40...Qf6 (40...Rc2 41.Re2 Re2 42.h4 Qf2 43.Kh1 Rd1) 41.Rf1-+ Qg5 (41...Rf8 42.Re1 Qf2 43.Kh1 Qe1 44.Kg2 Qf1) 42.Be3 Qe3 43.Kg2 (43.Kh1 Qe4 44.Kg1 Rc2 45.Rf2 Rd1 46.Rf1 Qg2) 43...Rc2 (43...Rd2 44.Kh1 Qe4 45.Kg1 Qg2) 44.Kh3 Qh6 45.Kg4 Rg8 (45...Qg6 46.Kf3 Rd3) 46.Kf3 Qh7 (46...e4 47.Ke4 Qe6 48.Kf4 Rg4 49.Kf3 Qe4) 47.Re1 (47.Rd1 Rf8 48.Ke3 Rc3 49.Kd2 Qd3 50.Ke1 Rf1) 47…Rc3 (47...Rc3 48.Re3 Rf8 49.Kg2 Rc2 50.Re2 Re2 51.Kg1 Qh2; 47...Qd3 48.Re3 Qf5) 0-1. ClayPigeons (2115) - JANAKA_JMA (2135), Rated Bullet game, lichess.org, 2021.

7.d4 Nbd7 8.Bd3 Be7 9.0-0 0-0 10.Nbd2 (10.h3 h6=) 10...Qc7 (10...a6 11.ba6 Ra6 12.Qc2=) 11.Qc2 (11.Qe2 a6=) 11...h6 12.a4 (12.Rfe1 Rfc8=) 12...Rad8 (12...cd4 13.ed4 d5 14.Rfc1=) 13.a5+= d5 14.ab6 (14.a6 dc4 15.Bc4 Bd5=) 14...ab6 15.Ra7 Bd6 (15...cd4 16.Nd4 Ra8 17.Ra8 Ra8 18.Nc6=) 16.dc5+= Nc5 17.Bf6 (17.cd5 Nd5 18.Bh7 Kh8+=) 17...gf6= 18.cd5 Qb8 19.Rfa1 Bd5 20.Be4 (20.Be2 f5=) 20...Ne4 21.Ne4 Be4 (21...Be5 22.Ne5 Qe5 23.Ng3=) 22.Qe4 f5 23.Qa4 (23.Qh4 Be5 24.Nd4 Kh7=) 23...Qc8 (23...Be5!? 24.Rc1 Rd3+=) 24.Qh4 Kg7 25.Qd4 Kh7 26.Qf6 (26.Qb2 Rd7+=) 26...Rd7 27.Rd7 Qd7 28.Qd4 Rd8 29.Qb6 Rb8 (29...Bc5! 30.Qa5 Rb8+=) 30.Qc6+– Qc6 31.bc6 Rb6 32.Rc1 Bc7 (32...Kg6 33.Nh4 Kg5 34.g3+–) 33.g3 (33.Nd4 f4+–) 33...Kg7 34.Nd4 Kf6 35.Rc5 Ke7 36.Nb5 Kd8 37.Kg2 Bd6?? (better 37...Ra6+–) 38.Nd6+– (38.Nd6 Kc7 39.Ne8 Kc8 40.c7+–) 1–0. GuestXMSD – Anglachel, freechess.org, 2020.

7.Be2 a6 8.a4 (8.ba6 Ra6 9.0-0 Be7=) 8...Nbd7 9.0-0 Be7 10.Qc2 0-0 11.d3 Qc7 12.Nbd2 (12.Nc3 Rfe8=) 12...Ra7 13.d4 (13.Rfb1 Rfa8=) 13...cd4+= 14.Nd4 Rc8 15.Bf3 d5 16.Qc3 (16.Rfc1 Bb4+=) 16...Ne5 (16...Bd6 17.Nc6 Bc6 18.bc6 Qc6 19.Rfc1–+) 17.Be2 (17.Rfc1 Nc4 18.Nc4 Qd8=) 17...Nc4-/+ 18.Rfc1 Bd6 19.N4f3 (19.Nc4 dc4 20.Qc4 Bh2 21.Kh1 Bd6+=) 19...ab5–+ 20.ab5 Ra1 21.Ra1 Nb2 22.Qb2 Ne4 23.Nb3 h6 (23...Qc3 24.Qc3 Rc3 25.Bd1-/+) 24.Rc1 (24.Bd3 Ng5 25.Nbd4 Nf3 26.Nf3 d4-/+) 24...Qb8 (24...Nc3 25.Bd3-/+) 25.Nbd4 Rc5 26.Ne1? (better is 26.Bd3-/+) 26...Bh2–+ 27.Kf1 Nf2 28.Rc5 bc5 29.Ne6 (29.Kf2 cd4 30.Qd4 Bg3 31.Kf1–+) 29...fe6 30.Kf2 Qg3 (30...Bg3!? 31.Kf1 e5 32.Nd3 Qf8 33.Kg1–+) 31.Kf1 Qe3 32.Nf3 (32.Bg4 Kf7 33.Nf3 Bg3–+) 32...Bg3 33.Bd1 d4 (33...d4 34.Qd2 Qa3–+) 0–1. Rodrigues,Rui – Iturri,Milton (2125), Wch U26 Leon, 1996.

7.Be2 d5=.

8.d4 cd4 9.Nd4 Nc5 10.Nd2 Be7 11.N2f3 0-0 12.Be2 h6 13.0-0 Rc8 14.Nd2 d5 15.N2b3 dc4 16.Bc4 Nce4 17.Qe2 Nd6 18.Be6! Rc7 19.Rfd1 Qa8 20.Nf5 Nf5 21.Bf5 Bg2 22.Rd4 Bf3 23.Qd3 Rd8 24.Rd8 Qd8 25.Qd8 Bd8 26.Bf6 Bf6 27.Rc1 Rc3 28.Rc3 Bc3 29.Bc2 Kf8 30.Nc1 Ke7 31.Kf1 Be5 32.Kg1 Kf6 33.Bd3 Bd1 34.f4 Bc3 35.Na2 Ba5 36.Kf2 Ba4 37.Bc4 Bc2 38.Nc1 Bb4 39.Ne2 Bc5 40.Ng3 g6 41.Kf3 Ke7 42.e4 f6 43.Nf1 f5 44.e5 Be4 45.Kg3 g5 46.h3 Bb7 47.Nh2 Bc8 48.Kf3 Bg1 49.Nf1 g4?! 50.hg4 fg4 51.Kg3 Bf5 52.Kh4! Kf8 53.Kh5 Kg7 54.Ng3! Bd7 55.e6 Be8 56.Kg4 Bc5 57.Bd3 Kf6 58.f5 Bf2?? 59.Ne4 Ke5 60.Nf2 1–0. Trkn – savalon, itsyourturn.com, 2000.

8.d4 Be7 9.Be2 0-0 10.0-0 Qc7 11.a5 ba5 12.Bc3 cd4 13.Ba5 Qc8 14.ed4 Ne4 15.Nbd2 Nd2 16.Qd2 e5 17.de5 de5 18.Rad1+/– Nc5 19.Ne5 Bf6 20.Ng4 Ne4 21.Nf6+– Nf6 22.f3 Qc5 23.Qd4 Qh5 24.Rfe1 a6 25.Bb4 Rfe8 26.b6 a5 27.Ba3 h6 28.c5 Rad8?? 29.Qd8 Rd8 30.Rd8 Kh7 31.Bd3 g6 32.Re7 Kg7 33.Bc4 Bd5 34.b7 1–0. pereira – wtyb, internet, 2009.

8.0-0 0-0 9.a4 Nbd7 10.d4 d5 11.Nbd2 Rc8 12.Qb3 cd4 13.Nd4 Nc5 14.Qd1 Bd6 (14...Qc7 15.N4f3+=) 15.cd5= Bd5 16.Bc4 (16.Nc4 Be7=) 16...Qc7+= 17.f4 Nce4 (better is 17...Rfd8!?+=) 18.Bd5+= ed5 (18...Nc3!? 19.Bc3 Nd5 20.Ne6 Qc3 21.Nf8 Ne3+=) 19.Ne4+/– de4 20.Nf5 Bc5?? (better is 20...Ne8+/–) 21.Bf6+– gf6 (21...Rfe8 22.Ng7 Kf8+–) 22.Qg4 Kh8 23.Qg7 1–0. GuestHGPV – GuestTNHK, freechess.org, 2018.

8.0-0 0-0 9.d3 Nbd7 10.h3 d5 11.Nbd2 dc4 12.dc4 Qc7 13.Qc2 Rfd8 14.a4 h6 15.Bc3 a5 16.Rad1 Ne8 17.Ne4 f5 18.Ned2 Bf6 19.Bf6 Nef6 20.Bd3 Ne5 21.Ne5 Qe5 22.Rfe1 Qd6 23.Nf1 Qc7 24.Ng3 Qf7 25.Be2 Ne4 26.Ne4 Be4 27.Qc3 Qf6 28.Qc1 Rd1 29.Rd1 Rd8 30.Rd2 Kf8 31.Qd1 Rd2 32.Qd2 Ke7 33.f3 Bb7 34.Qe1 f4 35.ef4 Qf4 36.Qb1 Qf5 37.Qe1 Qf4 38.Qb1 Kf7 39.Kf1 Qd4 40.Qe1 (40.Bd3 e5=) 40...Qf4 41.Qd1 Ke7 42.Qb1 e5 43.Qg6 Qf6 44.Bd3 Qg6 45.Bg6 Kf6 46.Bc2 Kg5 47.Kf2 h5 48.Ke3 ½–½. Sieber,Martin (2045) – Grzenia,Jerzy (2095), Karvina op, 2007.

8.0-0 0-0 9.d4 Nbd7 10.Nbd2 Qc7 11.a4 e5 (11...a6 12.ba6 Ba6 13.Re1=) 12.a5 ba5 13.Bc3 cd4 14.Ba5 (14.ed4 Rfe8=) 14...Qc5 (14...Qc8 15.ed4 a6 16.ba6 Ba6 17.Re1=) 15.ed4+= ed4 16.Nb3 Qh5 17.Nbd4 Ng4 (17...Rfe8 18.Nc6+=) 18.Nc6 (18.h3 Ngf6+–) 18...Bc6+= 19.bc6 The passed pawn on c6 will quickly become a dangerous weapon. White begins to 19...Nde5 Threatening mate... how? 20.h3 Nf6 (20...Nh6 21.Ne5 Qe5 22.Bd2+–) 21.Ne5 (21.Nd4 Qg6 22.f4 Qe4 23.fe5 de5+–) 21...Qe5+– 22.Bf3 Rfe8 23.Re1 Qc5 24.c7 Rac8 25.Qa4 (25.Qa4 d5 26.cd5+–) 1–0. onur604 (2320) – mitch44 (2110), lichess.org, 2020.

8.0-0 0-0 9.d4 Nbd7 10.Nbd2 Qc7 11.Qb3 d5 (11...a6 12.ba6 Ra6 13.Rfb1=) 12.Rfc1 a5 13.a4 Bd6 14.cd5 Bd5 15.Qc2 Qb7 16.Nc4 Bb8 (16...Be7!?=) 17.dc5+= Nc5? (better 17...bc5!? 18.Rd1 Rd8+=) 18.Bf6 gf6 19.Nb6! Qb6 20.Qc5 Qc5 21.Rc5 Bd6 1–0. GuestTYKM – GuestBMYB, freechess.org, 2019.

7.d3 0-0 8.Be2 d5 (8...a6 9.Nc3=) 9.Nbd2 (9.0-0 a6=) 9...Nbd7 (9...a6 10.ba6 Na6 11.0-0=) 10.h3 (10.0-0 a6=) 10...Qc7 (10...a6 11.ba6 Ra6 12.0-0+=) 11.g4 (11.cd5 Bd5 12.Qb1 a6+=) 11...h6 (11...dc4 12.dc4 Ne4 13.Ne4 Be4 14.Bd3 Bd3 15.Qd3+=) 12.Qc2 (12.g5 hg5 13.Rg1 dc4 14.dc4 Rfd8=) 12...dc4 (12...a6 13.g5 hg5 14.Rg1+=) 13.dc4= Bd6 (13...Rfd8 14.Rg1=) 14.Rg1 White prepares g5. White begins to deal mighty blows 14...Ne5 (14...a6!?=) 15.g5+= hg5 16.Ng5 g6? (better is 16...Be7+=) 17.f4+– Ned7 (17...Nh7 18.Nge4 Rfd8+–) 18.Ne6! Qb8 (18...fe6 Deflection from g6 19.Qg6 The nicest combinations are those leading to) 19.Rg6! (19.Rg6 Kh8 20.Rh6 Kg8 21.Qf5 Be4 22.Bf6 Nf6 23.Ne4 Ne4 24.Qh7) 1–0. Pruvost,Alain – Poslednik,Patrick, d'Herlies, 1999.

7.d3 d5 8.Be2=.

7.d3 d6 8.Nbd2 Nbd7 9.a4 0-0 10.h3 Re8 11.g4 Nf8 12.g5 Nh5 (12...N6d7!?+=) 13.Rg1 g6 14.h4 e5 15.Be2 Ng7 16.Ne4 Nfe6 17.Nh2 Nf5 18.Bf3 Rb8 19.Rg4 Neg7 20.Nc3 Bf3 21.Nf3 Qd7 22.Nd5 Bd8 23.Nd2 Nh5 24.Ne4 Rb7 25.Kd2 a6 26.ba6 Ra7 27.Nef6 (27.Qb3 Nd4 28.ed4 Qg4 29.Nd6 Re6 30.dc5 A) 30...bc5? 31.Qb8 Rd6 A1) 32.Qa7 Nf4 33.Re1 Ba5 (worse is 33...Nd5 34.Qc5 Qf4 35.Kc2+/–) 34.Bc3 Bc3 35.Nc3 Rd3 36.Kc2 Qf5 37.Qa8 Rd8 38.Qe4 Nd3+=; A2) 32.Qd6 Ba5 33.Ke3+–; B) 30...Qh4+=) 27...Nf6 (27...Bf6 28.gf6 Ra6 29.e4=) 28.gf6+= Nh6 29.Rg3 Qf5 30.Ke1 Ra6?? (better is 30...Qe6+=) 31.e4+– (31.e4 Qd7 32.Qh5+–) 1–0. Klasmeier,Hartmut (1990) – Laurenz,Waldemar (2140), NRW Class1, 2004.

7.Bd3 0-0 8.0-0 d5 9.Qc2 dc4 10.Bc4 Bf3 11.gf3 Nd5 (11...a6 12.a4=) 12.Nc3+= Nb4 13.Qe4 Nd7 (13...Qd2? 14.Rab1 (14.Qa8?! Qb2 15.a3 Qc3=) 14...Bf6 15.Rfd1+–) 14.a3 (14.Rad1 Nf6 15.Qb1 Qd7+=) 14...Nf6= 15.Qb1 Nbd5 16.Ne2 (16.Ne4 Ne8=) 16...Nd7 (16...Ne8 17.e4 Ndc7 18.e5=) 17.f4 Bf6 18.d4 cd4 19.Nd4 Bd4 20.Bd4 Rc8 21.Bd5 (21.Qa2 Ne7=) 21...ed5 22.Qf5 Nc5 23.Rac1 g6 24.Kh1 gf5?? (better 24...Re8 25.Qg5 Qd6=) 25.Rg1 (25.Rg1 Qg5 26.Rg5) 1–0. DEFFM – Guestxxx, freechess.org, 2019.

7.d4 a6=.

7.Be2 a5 8.0-0 d5 9.d4 Qc7 (9...0-0 10.Nbd2=) 10.Nbd2 (10.cd5 Bd5 11.dc5 Bc5 12.Bf6 gf6+=) 10...Nbd7= 11.Rc1 h6 (11...0-0 12.Bd3=) 12.Ne5 (12.cd5 Bd5 13.e4 Ne4 14.Ne4 Be4 15.dc5 Bc5 16.Bg7 Rg8 17.Bh6 Ne5+=) 12...Ne5 13.de5 White gets strong initiative 13...Nd7 14.f4 (14.cd5 Bd5 15.e4+=) 14...0-0-0 (14...0-0!?=) 15.Qc2 f5 (15...Kb8 16.cd5 ed5 17.Bf3+=) 16.Bf3 Nf8 17.cd5 Bd5 18.Bd5 Rd5 19.e4 fe4 20.Ne4 Rg8 21.f5 Nd7 22.f6 (22.fe6 Ne5 23.Nc3 Rd6+/–) 22...gf6 23.ef6 The passed pawn on f6 will quickly become a dangerous weapon 23...Bd6 24.Nd6 Qd6 25.f7 Rgg5 26.Qe4 (26.a3 Qf8 27.Qe4 Rd2 28.Qa8 Kc7 29.Qc6 Kd8+=) 26...Nf8 27.Rce1 (27.Bc3 e5+/–) 27...Kd7 (27...Rd2!? 28.Qa8 Kd7 29.Qb7 Qc7=) 28.h4 Rgf5 29.Bg7 Ng6? (better is 29...Rf1 30.Rf1 h5+/–) 30.f8Q!+– (30.f8Q Nf8 31.Bf8+–; 30.Bh6 Rf1 31.Kf1 Rf5 32.Kg1 Qd4 33.Qd4 cd4+/–) 1–0. Labahn,Wolfgang – Heino,Vaeinoe, corr ICCF WT–I–1185, 1990.

7.Be2 a6 8.Nc3=.

7.Be2 Qc7 8.a4 (8.Nc3 0-0=) 8...0-0 9.d3 a5 (9...d5 10.a5=) 10.Nbd2 Rd8 (10...d5 11.0-0=) 11.Qc2 (11.Rc1 d6=) 11...d5 12.0-0-0 (12.0-0!?=) 12...Nbd7+= 13.g4 (13.Kb1 e5+=) 13...e5 (13...Ng4 14.Bg7 Kg7 15.Rdg1+=) 14.g5+= Ne8 (14...Ng4 15.Rhf1 f5 16.cd5 Bd5 17.h3+–) 15.cd5 Bd5 16.Nc4 e5 seems the pivot of the position 16...f6 (16...Bd6 17.Rhe1=) 17.h4 (17.Rhg1 Rac8=) 17...Nd6 (17...Rac8=) 18.h5 (18.e4 Be6=) 18...Bf7 (18...fg5 19.h6 g4 20.Nfe5 Nc4 21.dc4 Bh1 22.Ng4 g6+–) 19.g6 (19.gf6 gf6 20.Nfd2 Kh8+=) 19...hg6= 20.hg6 Bg6 21.Rdg1 (better is 21.Rh2=) 21...Bh7?? (better is 21...Bf7=) 22.Nd6+– Bd6 (22...Qd6 23.Qc4 Kf8+–) 23.Qc4 Kh8 (23...Kf8 24.Rh7 Ke8 25.Qe6 Be7 26.Rgg7 Nf8 27.Qe7 Qe7 28.Re7) 24.Rh7! Kh7 25.Qf7 (25.Qf7 e4 26.Qg7) 1–0. Muivid – Yemelyanovich, Minsk, 1963.

8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 d5 12.d4 Nbd7 13.Nbd2 Qc7 14.Ne5 (14.dc5 Bc5 15.Qb1 Ra8=) 14...cd4+= 15.ed4 dc4 16.Ndc4 Ne5 (16...Nd5 17.Qd2+=) 17.Ne5 (17.de5 Nd5 18.Bd4 Bc5+=) 17...Bd6 18.h3 Rc8 19.Bf3 Be5 (19...Nd5!?+=) 20.de5= Bf3 21.Qf3 Nd5 22.Bb2 Qd7 23.Qd3 h6 24.Ra1 Qe7 25.Bd4 Qg5 26.g3 h5 27.h4 Qe7 28.Qd2 Qc7 29.Ra6 Exerts pressure on the isolated pawn (29.Qd1!?=) 29...Qc4+= 30.Qb2 (30.Qd1 Qb5 31.Ra7 g6+=) 30...Qd3-/+ 31.Ra1? (better is 31.Kh2!? Rc2 32.Ra3 Rb2 33.Rd3 Rb5 34.Kg2-/+) 31...Rc4–+ 32.Ra8? (32.Be3 Ne3 33.Qa3 Qa3 34.Ra3 Rc1 35.Kh2 Ng4 36.Kg2 Ne5 37.Ra6–+) 32...Kh7 33.Bb6 (33.Ra1 Rd4 34.Qb1 Qb1 35.Rb1 Rd3–+) 33...Nb6 (better is 33...Rb4 34.Qb4 Nb4–+) 34.Rb8 (34.Ra1–+) 34...Qd1 35.Kg2 Rc1 (35...Rc1 36.Qc1 Qc1 37.Rb6 Qc5–+; better is 35...Na4 36.Qa3 Rc3 37.Qc3 Nc3 38.Rc8 Qd5 39.Kh2–+) 0–1. Jeric,Simon (2335) – Drazic,Sinisa (2475), Open, Nova Gorica SLO, 1999. (=1.c4 b6 2.b4 e6 3.Bb2 Nf6 4.b5 Bb7 5.Nf3 c5 6.e3 Be7 7.Be2 0-0)

8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 d5 12.d4 Nbd7 13.Nbd2 cd4 14.Bd4 Qc7 15.cd5 Bd5 16.Qb1=.

8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 d5 12.d4 Nbd7 13.Nbd2 Ne4 14.Qc2 1-0. onur604 (2320) - Arfans_PercasiCMS (2300), Casual Rapid game, lichess.org, 2021.

8.0-0 a6 9.Nc3=.

8.0-0 Qc7 9.d3 d6 10.Nbd2 Nbd7 11.a4 a5 12.Qc2 d5 13.d4 (13.cd5 ed5 14.g3 Bd6=) 13...Bd6 (13...cd4 14.ed4 Rac8 15.Rac1+=) 14.cd5= ed5 (14...Bd5? 15.e4+–) 15.dc5 bc5 16.h3 Rfe8 17.Rfe1 c4 18.Nd4 Nc5 19.Nf5 Be5 (19...Bh2 20.Kh1 Be5 21.Be5 Re5 22.Nd4=) 20.Be5 (20.Nf3 Bb2 21.Qb2 Bc8=) 20...Qe5= 21.Nd4 Nfe4 (21...Qd6 22.Bf3=) 22.N4f3 (22.Ne4 Qe4 23.Qe4 Ne4+=) 22...Qf6 23.Bf1 (23.Ne4 Ne4 24.Rf1 Bc8=) 23...Bc8 (23...Rac8 24.Be2+=) 24.Ne4= Ne4 25.Nd4 Re5 26.f4 (26.Rad1 Rg5 27.g3 Bd7=) 26...Re8+= 27.Rad1 Bb7 28.Be2 Nc5 29.Bf3 White prepares f5 29...Nd3 30.Re2 g6 31.Kh2?? (31.Bg4 Qd6=) 31...Qd6?? (31...Re3 32.Qd2 Qf4 (32...Qd4?! 33.Qe3 Qf6 34.f5+=) 33.Kg1 Rae8 (33...Qd4?! 34.Qe3 Qe3 35.Re3+=) 34.Re3 A) 34...Qe3?! 35.Qe3 Re3 36.Nc6–+; B) 34...Qd4?! 35.Rde1 c3 36.Qd3 Qd3 37.Re8 (37.Rd3?? Re1 38.Kf2 c2–+) 37...Kg7 38.R8e7 Qd4 39.Kf1–+; C) 34...Re3–+) 32.g3 Qa3 33.f5 (33.Rb1!?+=) 33...Re5-/+ 34.fg6 hg6 35.Nc6 (better is 35.Bg4!?-/+) 35...Bc6–+ 36.bc6 Rc8 37.Bd5 (37.Qd2 Qa4 38.Bg4 f5–+ (38...Rc6?! 39.Bd7-/+)) 37...Rd5 38.Qc4 Qd6 39.Qa6? (39.Red2 Rc6 40.Qb3–+) 39...Rc6 40.Qa8 (40.Qb7 Ne5 41.Rd5 Qd5 42.Qb8 Kh7–+) 40...Kg7 41.Red2 (41.Qa7 Rc7 42.Qa8 Rc4–+) 41...Rc3 (better is 41...Ne5 42.Rd5 Rc2 43.Kh1 Nf3–+) 42.Qb7 Qe5 43.Qb1 (43.Re2 Qf5 44.Rdd2 Rc1–+) 43...Nb4 (43...Qe3 44.Rg2 Nf4 45.Re1 Ng2 46.Re3 Ne3 47.h4–+) 44.Rd5 (44.Re2–+) 44...Nd5 45.Qb2 (45.Rc1 Re3 46.Qa1 Re2 47.Kh1 Rb2–+) 45...Re3 (45...Re3 46.Qe5 Re5–+) 0–1. Wilke,Hans Peter – Kievelitz,Bernd (1995), Berlin GER, Lichtenberger Sommer, 2014.

8.0-0 Ne8 9.Qc2 (9.d4 a6=) 9...Bf6 (9...a6 10.d4=) 10.Nc3 d5 11.cd5 ed5 12.d4 Nd7 13.Rfd1 cd4 (13...Nc7 14.dc5 Nc5 15.a4+=) 14.Nd4+/– Rc8 15.Nc6 (15.Rac1 Nd6+/–) 15...Bc6+= 16.bc6 Rc6 17.Rd5 Qc8 (17...Bc3!? 18.Bc3 Qc7=) 18.Rc1+/– Nc7 19.Rdd1 Nc5 (better is 19...Rd8!?+=) 20.Bf3+– Re6 21.Bg4 a6 (21...Rd8 22.Be6 Rd1 23.Rd1 Qe6 24.Na4+–) 22.Be6 N7e6 (22...Qe6 23.Ba3 Bc3 24.Bc5 (24.Qc3?! Nb5 25.Qb2 Na3 26.Qa3 Qg6+–) 24...bc5 25.Qc3 Qa2 26.Qc5+–) 23.Nd5 Qb7? (23...Bd8+–) 24.Bf6 1–0. DEFFM – GuestVWBK, freechess.org, 2018.

8.a4 a5 9.Nc3 d5 10.cd5 Nd5 11.Nd5 ed5 12.0-0 Nd7 13.d4 Bf6 14.Qc2 Qe7 15.Ba3 Rac8 16.Qd3 Qe6 17.Rad1 c4 18.Qc2 Rfe8 19.Rfe1 ½–½. Dresling,Stig (2020) – Kristensen,Ejnar Moller (1795), Denmark veterans computerfree ch, 2002.

8.Qc2 d5 9.d4=.

8.Qc2 d6 9.0-0 a6 10.Nc3=.

8.Qc2 d6 9.0-0 Nbd7 10.Nc3 Qc7 11.h3 (11.e4 a6=) 11...d5 (11...Ne5 12.Ne5 de5 13.d3=) 12.Rac1 Ne4 (12...dc4 13.Bc4 Rfd8 14.Rfd1=) 13.d3 (13.cd5 ed5 14.a4 Rfe8=) 13...Nd6 (13...Nc3 14.Bc3 dc4 15.dc4=) 14.Nb1 (14.Rfd1 a6=) 14...dc4 (14...a6 15.cd5 Bd5 16.ba6 Ra6 17.a3+=) 15.dc4 Ne4 (15...Be4 16.Qb3=) 16.Nbd2 (16.Nc3 Nc3 17.Bc3 Rfd8=) 16...f5 (16...Nd2 17.Nd2 a6 18.a3=) 17.Rfd1 Nd6 (17...a6 18.Ne4 Be4 19.Qb3=) 18.Ne5 Rad8 (18...a6 19.Bf3=) 19.Ndf3 (19.Nd3 Bf6=) 19...Ne5 (19...Be4 20.Qa4=) 20.Ne5 (20.Be5 Bf6=) 20...Nf7 (20...Bf6 21.Nd3=) 21.Nf7 (21.Rd8 Rd8 22.Nf7 Kf7=) 21...Kf7 (21...Rf7 22.Rd8 Qd8 23.Bh5=) 22.f4 (22.Bd3 Kg8=) 22...Bf6 (22...Be4 23.Bd3 Bd3 24.Rd3 Rd3 25.Qd3=) 23.Bf3 (23.Bf6 Kf6 24.Bd3 Rd7=) 23...Bf3= 24.gf3 Qe7 (24...Bb2 25.Qb2 Kg8=) 25.e4 (25.Bf6!? Qf6 26.Rd8 Rd8 27.Rd1=) 25...fe4 (25...Bb2 26.Qb2 Qh4 27.Qh2-/+) 26.fe4+= Bd4 (26...Bb2 27.Qb2 Qh4 28.Qc3+=) 27.Bd4 cd4 28.c5 bc5 (28...Kg8 29.c6=) 29.Qc5 Qh4 30.Rd3 (30.Qg5!? Qg5 31.fg5=) 30...Kg8 (30...Qf4?? 31.Rf1 Qf1 32.Kf1 Ke8 33.Ke2+–) 31.Qe5 (31.Qg5 Qf4 32.Qf4 Rf4-/+) 31...Rf4–+ (worse is 31...Qf4 32.Qf4 Rf4 33.Rc7-/+) 32.Rd2?? (better is 32.Qe6 Kh8 33.Qe5-/+) 32...Re4 33.Qc5 (33.Qc7 Re1 34.Kh2–+) 33...Re1 (33...Re1 34.Re1 Qe1 35.Kg2 Qd2 36.Kh1 Rf8 37.Qf8 Kf8 38.a4 Qf2 39.b6 ab6 40.h4 d3 41.h5 d2 42.a5 d1Q) 0–1. Eberl,H – Fluegge,G, DDR, 1981.

8.Qc2 d6 9.0-0 Nbd7 10.d3 Qc7 (10...a6 11.Nc3=) 11.Nbd2 (11.Nc3 Rfe8=) 11...Rfe8 (11...a6 12.a4=) 12.a4 Rad8 (12...a6 13.Bc3=) 13.Ra3 (13.a5 e5+=) 13...Nf8 (13...Ra8 14.a5+=) ½–½ (54). Fuerstman – Samsa, North Carolina, 1980.

8.Qc2 d6 9.h3 Nbd7 (9...a6 10.0-0+=) 10.Qc3 (10.0-0 a6=) 10...Ne8 11.Qc2 (11.0-0 a6=) 11...Bf6 12.Nc3 Ne5 13.Ne5 Be5 14.Bf3 (14.0-0 Qg5 15.Bg4 Qh4=) 14...Bf3+= 15.gf3 d5 16.f4 Bf6 17.cd5 (17.d3 a6+=) 17...ed5 18.Qf5 (18.Rg1 a6+=) 18...Nc7-/+ 19.Rg1 (19.a4 Re8-/+) 19...g6 (19...Nb5 20.Nb5 Bb2 21.Rb1-/+) 20.a4 Bg7 (20...d4 21.Nd1-/+) 21.Qg5 Qg5 (21...a6!? 22.ba6 Na6 23.Qd8 Rfd8-/+) 22.fg5= d4 (22...f6 23.gf6 Bf6 24.Ke2+=) ½–½. Streit,Bodo – Schmidt,Robert, Germany, 2005.

8.Nc3 Qc7 9.0-0 (9.Qc2 a6=) 9...Ng4 10.h3 Bf3 Threatening mate... how? 11.hg4 Bb7 12.Bf3 d6 13.Bb7 Qb7 14.Qf3 Qf3 15.gf3 Nd7 (15...a6 16.Rfb1=) 16.f4 f5 (16...Bf6 17.Rfb1=) 17.g5 (17.f3 Bf6=) 17...Rac8 (better is 17...h6=) 18.d4?? (better is 18.Rfe1=) 18...cd4-/+ 19.ed4 (better is 19.Ne2 de3 20.Nd4 ef2 21.Rf2–+) 19...h6?? (better is 19...Rc4!? 20.Rae1 Kf7–+) 20.gh6 (20.Rfe1!? Kf7 21.g6 Kg6 22.Re6 Kf7 23.Rae1=) 20...Rf6 (20...gh6 21.d5 e5 22.Kg2-/+) 21.h7 (21.Rfe1 Rh6 22.d5 e5+=) 21...Kh7-/+ The mate threat is Rg6 22.Kg2 (better is 22.Rfe1-/+) 22...Rh8 (better is 22...Rc4 23.Rh1 Kg8-/+) 23.Rg1 (23.Rh1 Rh6=) 23...Kg8 (23...Rg6 24.Kf1=) 24.Kf3 (24.d5 Nc5 25.Ne2 Rfh6=) 24...Rfh6 25.Ne2 (25.Rae1 Kf7+=) 25...Bf6 (25...Nf6 26.Ng3 Rh3 27.Rad1+=) 26.a4= Kf7 27.a5 Rc8 (27...Rh2 28.ab6 ab6 29.Ra7=) 28.ab6 (28.Ra4 Ke7=) 28...ab6 29.Rgc1 (29.Ra4 Rch8=) 29...e5 (29...Ke7 30.Ng3=) 30.Ra7 (30.fe5 de5 31.Ra7 e4 32.Kg2 Ke8+=) 30...Ke8 (30...e4!? 31.Kg2 Ke7=) 31.Ng3+= g6 (31...e4 32.Kg2 g6 33.f3 ef3 34.Kf3+=) 32.fe5 de5 33.de5 Bh8? (33...Ne5 34.Be5 Be5 35.Rb7+=) 34.Rd1 (better is 34.Re1+–) 34...Ne5+= 35.Be5 Be5 36.Re1 Rc5 37.Rb7 Kd8 (37...Rh4 38.Rb6 Kf7 39.Rd1 Rhc4 40.Rd7 Ke8 41.Rdb7 Rf4 42.Ke2 Rc2 43.Kd1=) 38.Rb6 Bg3 (38...Bc7 39.Rbe6 Rc4 40.b6 Rc3 41.Kg2 Bg3 42.fg3+/–) 39.Kg3 (39.fg3 Rc4 40.Ree6 Rh1 41.Rg6 Rf1 42.Kg2 Rfc1+–) 39...Rc4 40.f3 (40.Ree6 Rg4 41.Kf3 Rh3 42.Ke2 g5+=) 40...Rc5 (40...Rch4 41.Rf6+=) 41.Rb1 (41.Ree6 Kc7+/–) 41...Kc7 (41...Rc4 42.Rd1 Kc8 43.Rf6+=) 42.Rf6+/– Kb7 (42...Kb8 43.b6 Rc8 44.b7+/–) 43.b6 Rh7 (43...Rc4!?+/–) 44.Rg6+– Rc6?? (better is 44...Rd7+–) 45.Rc6 Kc6 46.Kf4 (better is 46.b7 Rb7 47.Rb7 Kb7+–) 46...Rb7 (46...Kb7 47.Kf5 Rf7 48.Ke4 Re7 49.Kd4+–) 47.Kf5 Kd7 (47...Kd6 48.f4 Ke7 49.Ke5+–) 48.Kf6 Ke8 (48...Kd8 49.f4+–) 49.f4 Rf7 (49...Kf8 50.Ke6 Ke8 51.f5+–) 50.Ke6 Rb7 51.Kd6 Kd8 52.Kc6 (better is 52.Kc5!? Kd7+–) 52...Kc8 53.Re1 (53.f5 Rf7 54.b7 Kb8+–) 53...Rc7 54.Kb5 (54.bc7?!=) 54...Rf7 (54...Rc2 55.Re7 Kd8+–) 55.Ka6 Rf4 (55...Rf6+–) 56.b7 Kd7 57.Rd1 Kc7 58.Rc1 (58.Rc1 Kd7 59.b8Q Rf6 60.Kb7 Rd6 61.Qc8 Ke7 62.Re1 Kf7 63.Qf5 Rf6 64.Qh7 Kf8 65.Qe7 Kg8 66.Rg1 Rg6 67.Rg6 Kh8 68.Qh4) 1–0. Niono,O – Singh,JK, Dubai ol (Men), 1986.

8.Nc3 d5 9.d4=.

8.d3 d5 9.Nbd2 Nbd7 10.0-0 Qc7 11.d4 cd4 12.ed4 Rac8 13.Rc1 Qb8 14.a3 Rfd8 15.Re1 Bd6 16.g3 Ne4 17.Ne4 de4 18.Nh4 e3 19.Bf3 ef2 20.Kf2 e5 21.Bb7 Qb7 22.Nf5 Bf8 23.d5 f6 24.Kf1 Nc5= 25.Rc2 g6 26.Ne3= Bg7 27.Ng4 Rd6 28.Qf3 Qd7 29.Nf2 Na4 30.Qb3 Nb2 31.Qb2 f5 32.Qb3 e4 33.Nh3 Bh6 34.Nf2 Qc7 35.Rd1 Qc5 36.Qb4 Qc7 37.Nh3 (37.Qb3!?=) ½–½. Kuhlmann,AEJ – Nicolaes,L, Vet.88/2, 1989.

9.a4 Qc7 10.d4 cd4 11.Qd4 Nbd7 12.cd5 Bd5 13.Nbd2 Rac8 14.Rfc1 Qb7 15.Qh4 Rc1 16.Rc1 Rc8 17.Rc8 Qc8 18.Bd3 h6 19.e4 (19.Qd4 Nc5=) 19...Bb7 (19...Nc5 20.ed5 Nd3 21.d6 Bd6 22.Bf6 gf6 23.Qg4 Kh8 24.Qd4+=) 20.e5+= Nd5 21.Qe4 f5 (21...g6 22.Qg4+=) 22.ef6+/– N7f6 23.Qe5 Qc7?? (better is 23...Nb4 24.Bc4 Nbd5+/–) 24.Qe6+– Kh8 25.Ne5 Nf4 (25...Bc5 26.Ne4 Bf2 27.Nf2 Nf4 28.Nf7 Kg8 29.Nh6 Kh8 30.Qf6 gf6 31.Bf6 Qg7 32.Bg7 Kg7 33.Nf5 Kf6+–) 26.Nf7 Kg8 27.Nh6 (27.Nh6 Kh8 28.Qg8 Ng8 29.Nf7) 1–0. GuestWHFK – guestJOZ, freechess.org, 2018.

9.a4 Qc7 10.cd5 Nd5 11.Qb3 Nd7 12.Rc1 N7f6 13.d3 Rac8 14.Nbd2+= Rfd8. pcmvr (2225) – guerino (2100), net–chess.com, 2006.

9.a4 Qc7 10.h3 Nbd7 11.Nh2 Bd6 12.f4 Ne4 13.Nf3 Ng3 14.Rf2 Ne2 15.Qe2 h6 16.Nc3 Nf6 17.Raf1 Rad8 18.cd5 ed5 19.Nh2 Rfe8 20.Ng4 Nh5 21.Nh6 Kf8 22.Qh5 d4 23.Nf5 f6 24.Qh8 Kf7 25.Qg7 Ke6 26.Qc7 Bc7 27.Ng7 Kf7 28.Ne8 Re8 29.ed4 cd4 30.Ne2 Bf4 31.Nf4 Re4 32.d3 Re3 33.Bd4 Rg3 34.Nh5 1–0. Abdullaevich (1800) – ryba1946 (1705), lichess.org, 2018.

9.a4 Bd6 10.Ne5 Qc7 11.d4 cd4 12.ed4 Ne4 13.cd5 Bd5 14.Nd2 Nd7 15.Rc1 Qd8 16.Nc6 Qf6 17.Nf3 Ng5 18.Ng5 Qg5 19.Bf3 Nf6 20.Bd5 Nd5 21.Ne5 Nf4 22.g3 Nh3 23.Kh1 Be5 24.de5 Qf5 25.Kg2 Ng5 26.Qe2 Qh3 27.Kh1 f5 28.Ba3 Rf7 29.Bd6 f4 30.Rc7 f3 31.Qd3 Qg2 0–1. Abdullaevich (1610) – surabaldiev, lichess.org, 2018.

9.a4 Ne4 10.a5 Nd7 (10...dc4!? 11.Nc3 Nd7 12.Ne4 Be4 13.Bc4 ba5=) 11.a6+= Bc8 12.Nc3 Ndf6 (12...Bf6 13.Qc2 Bc3 14.Bc3 Nc3 15.Qc3+=) 13.Ne4 Ne4 14.d3 Nd6 (14...Bf6 15.Ne5 Be5 16.Be5+/–) 15.Ne5 Bf6 16.Nc6 (16.Bf3 Be5 17.Be5 f6+=) 16...Qc7 17.Bf6 gf6 18.Bh5 (18.Bf3 Kg7+/–) 18...Bd7 19.cd5 (19.Ne7 Kh8 20.Qf3 f5+=) 19...ed5 (19...Nb5!? 20.Qg4 Kh8=) 20.Ne7+/– Kh8 21.Nd5 Qd8 22.Qc2 (22.Ra4 Bb5 23.Rf4 f5+/–) 22...Bb5 23.Qc3 Kg7 24.Nf4 (24.Rfc1 Re8+/–) 24...Bc6 (24...Qe7 25.Bf3 Rac8 26.Nh5 Kg6 27.Rfd1+=) 25.d4 Ne4 (25...Qe7 26.Rfc1+/–) 26.Qc2 Re8 (26...Qe7 27.Rfe1+/–) 27.f3+– Ng5 (better is 27...Nd6 28.dc5 bc5 29.Qc5 Qb6 30.Qb6 ab6+–) 28.d5! Bb5 (28...Bd5 29.Rad1 Decoy) 29.Rfe1 Qd6 (29...h6 30.h4+–) 30.Bg4 Re7 (30...Kg8 31.Qb3 Bd7 32.Bd7 Qd7 33.h4+–) 31.Nh5 (31.Nh5 Kh8 32.Qb2+–) 1–0. Leonco – Aina, internet corr, 2018.

9.a4 Ne4 10.d3 Bf6 11.Bf6 Nf6 12.Ne5 dc4 13.dc4 Qd1 14.Rd1 Be4 15.Nc3 Bg6 16.Ng6 hg6 17.Bf3 Nbd7 18.Ba8 Ra8 19.Ne4 Ne5 20.Nf6 gf6 21.Rac1 a6 22.Rd6 ab5 23.ab5 Rb8 24.h3 Kg7 25.f4 Nc4 26.Rc4 Rb7 27.Kf2 f5 28.g4 fg4 29.hg4 Kf6 30.e4 g5 31.Kf3 gf4 32.Kf4 Ke7 33.e5 f6 34.g5 fe5 35.Ke5 Rb8 36.Re6 Kf7 37.g6 Kg7 38.Kf5 Rf8 39.Kg5 Rd8 40.Re7 Kg8 41.Rf4 Rd5 42.Rf5 Rd1 43.g7 Rg1 44.Kf6 Kh7 45.Rh5 Kg8 46.Re8 1–0. Abdullaevich (1830) – kalefan (1640), lichess.org, 2019.

9.a4 Ne4 10.d3 Nf6 11.Nbd2=.

9.a4 Re8 10.d4 Nbd7 11.Nbd2 Nf8 (11...a6 12.cd5 Nd5 13.Rc1=) 12.a5+= Rc8 13.ab6 ab6 Opening the a–file gets White a lot of play 14.Ra7 Rc7 15.Qa4 Ne4 (15...N8d7 16.Ra1+=) 16.Ne4+– de4 17.Nd2 Ng6 18.Rd1 Qb8 (18...cd4!? 19.Bd4 Rd7+=) 19.dc5+– Bc5 20.Nb3 Be7 (20...Rd8 21.Rd8 Qd8 22.Nc5 bc5 23.Qa5+–) 21.Qa1 (21.Bd4 Rcc8 22.Bb6 Ne5+–) 21...Bf8 (21...e5!?+–) 22.Bd4+– Bc8 (22...Rd7 23.Bb6 Bd6 24.Kh1+–) 23.Ra8 Qb7 24.h3?? (better 24.Qa6 Rd8 25.Qb7 Rb7 26.c5 bc5 27.Nc5+– (27.Bc5?! Rd1 28.Bd1 Rd7+–)) 24...e5+= 25.Bb2 Bd7 (better 25...Rd7!?+=) 26.Re8+– Be8 27.Be5 Ne5 28.Qe5 Re7 29.Qd5 Qc8 (29...Qc7 30.Rd4+–) 30.Nd4 (30.Qd8 Qe6+–) 30...Rd7? (better 30...Qc7+–) 31.Qe4+– Re7 32.Qf3 h6 33.Nf5 Re6 34.Bd3 Rf6 35.Qg4 (better 35.Qe4!? g6 36.Ne7 Be7 37.Qe7 Re6+–) 35...Bd7 36.e4 g6 (36...Bf5 37.ef5 Bd6 38.Qf3+–) 37.Qh4 Rf5?! (37...g5 38.Qg4 Bf5 39.ef5 Bg7+–) 38.ef5 Bf5 39.Bf5 Qf5 40.Qd8 (40.Rd8 Qe5 41.Qh6 Qe1 42.Kh2 Qe5 43.f4 Qe7 44.Rf8 Qf8 45.Qf8 Kf8+–) 40...Kg7 41.Qb6 Kh7 (41...Bc5 42.Qa5 Qf2 43.Kh1+–) 42.Qd4 (42.Qb7 Bc5 43.Qf3 Qe6+–) 42...Bg7 (42...Bc5 43.Qh4 Qc2 44.Re1+–) 43.Qd3 (43.Qd5 Qf4+–) 43...Qg5 (43...Qc5 44.Qd5 Qc7 45.c5+–) 44.Qd5 Be5 (44...Qf6+–) 45.Qf7 Kh8 46.Qf8 Kh7 47.Rd7 Bg7 (47...Qe7 48.Qe7 Kg8 49.Qd8) 48.Qg7 (48.Rg7?!=) 1–0. BeepBeepImAJeep (2755) – iam24601 (2670), lichess.org, 2020.

9.Qc2 Qc7 10.d3 Nbd7 11.h3 Rad8 12.Nbd2 e5 13.cd5 Nd5 14.a3 Bf6 15.Ne4 Be7 16.Nfd2 f5 17.Nc3 Kh8 18.Nd5 Bd5 19.e4 fe4 20.de4 Be6 21.Bc4 Rf6 22.Bd5 (22.Rfd1!?+=) 22...Bd5= 23.ed5 Rdf8 (better is 23...Rd6!?=) 24.Ne4+/– Rf4 25.d6! Bd6 26.Nd6?? (better is 26.Ng5 Rh4 27.Ne6+/–) 26...Qd6+= 27.Rad1 Qe6 28.Qe2 e4 (28...R4f7 29.f3-/+) 29.Qe3 (better is 29.f3=) 29...Ne5?? (29...c4 30.Bc3+=) 30.Qg3?? (better is 30.Qf4! Nf3 31.gf3 Rf4 32.Rd8 Qg8 33.Rg8 Kg8 34.fe4 Re4 35.Rd1+–) 30...Ng6-/+ 31.Bc1 R4f6 32.Bb2? (32.Rde1 Nf4 33.Bf4 Rf4-/+) 32...R6f7 (better is 32...Nf4!? 33.Qh4 Rg6–+) 33.Rd6 (33.Rde1!?-/+) 33...Qb3 0–1. DEFFM – GuestCBGQ, freechess.org, 2017.

9.Qc2 Qc7 10.d4 cd4= 11.Nd4 dc4 (11...Nbd7 12.Nd2=) 12.Nd2 Nbd7 13.Rac1 Rac8 14.Nc4 Qb8 (14...Nc5 15.Bf3 Nd5 16.Rfd1+=) 15.f3 (15.f4 Nd5 16.Qd2 Rfd8=) 15...Ne5 16.Qd2 Nc4 17.Bc4 Rfd8 18.Qe2 Bc5 19.Ne6 fe6 20.Be6 Kh8 21.Bc8 Qc8 (21...Bc8 22.Rfd1 Rd1 23.Rd1=) 22.Rfd1 (22.Bd4 Rd4 23.ed4 Bd4 24.Kh1 Bc5+=) 22...Re8 (22...Rd1!? 23.Rd1 Nd5+=) 23.Bd4+/– Qf5 (23...Nd7!?+/–) 24.Bc5+– bc5 25.e4 Qg5 26.Qd2 Qh5 27.Qa5 (27.a4 Kg8+–) 27...Qg5 28.Qd2 Qh5 29.Qe3 h6? (better is 29...Qf7+–) 30.Qc5 Qg6 (30...Qf7 31.Qa7 Ra8 32.Qc5 Qa2 33.Qc7 Qa7 34.b6+–) 31.Qa7 Bc8 (31...Re7 32.Qc5 Ne4 33.fe4 Re4 34.Rd2+–) 32.b6 Bh3 33.Rc2 Nh5 (33...Ne4 34.fe4 Qe4+–) 34.b7 Nf4 (34...Kh7 35.b8Q Rb8 36.Qb8 Qg5+–) 35.b8Q Bg2 36.Qf4 (36.Qf4 Bf3 37.Kf1+–) 1–0. DEFFM – GuestWBCQ, freechess.org, 2018.

9.Qc2 Qc7 10.Be5!? Qd8 11.Nc3=.

9.d3 a6 10.Na3 dc4 11.dc4 Ne4=.

9.d3 a6 10.a4 ab5 11.cb5 Nbd7 12.Nc3 Qc7 13.Qc2 e5 14.d4 ed4 15.ed4 Rfe8 16.dc5 Bc5 17.Qd2 Rac8 18.Bd3 (better is 18.Rac1!?+=) 18...d4-/+ 19.Na2 Bf3 20.gf3 Ne5 21.Rac1?? (better is 21.Be2–+) 21…Nf3 (21...Nf3 22.Kg2 Qh2 23.Kf3 Qh3 24.Kf4 Qg4) 0–1. Neumann,Frank – Salazar_Moran,Alejandro, OP–2012–0-02039, 2012.

9.d3 a6 10.a4 dc4 11.dc4 Qc7 (11...Qc8 12.Nc3=) 12.Qc2 Nbd7 (12...Rd8 13.Nc3=) 13.Nbd2 (13.ba6 Ra6 14.Nc3 Ng4=) 13...Bd6 (13...Rfd8 14.Rfd1=) 14.h3 (14.Rfb1 Rfd8=) 14...Rfe8 (14...e5 15.Bd3+=) 15.Bd3 (15.Rfb1 Red8=) 15...Ne5 16.Ng5 h7 seems the pivot of the position (16.Be5 Be5 17.Rad1 Red8=) 16...Red8?? (better is 16...Nd3 17.Qd3 Red8+=) 17.Bh7+– (17.Bh7 Kh8 18.f4+–; 17.Nh7? Nd3 18.Nf6 gf6 19.Bf6 Be7–+) 1–0. Roos,Bernhard – Hort,Wolfgang, DESC, 2001.

9.d3 Qc7 10.Nbd2 Rd8 11.Be5 Bd6 12.Bd6 Qd6 13.a4 Nbd7 14.a5 dc4 15.Nc4 Qc7 16.a6 Bd5 17.Qc2 Bc4 18.dc4 Ne5 19.Rad1 h6 20.Ne5 Qe5 21.Bf3 Rab8 22.Rd2 Ne8 23.Rfd1 Qc7 24.Rd8 Rd8 25.Rd8 Qd8 26.Qd1 Qd1 27.Bd1 Nd6 28.Be2 Kf8 29.Bd3 Ke7 30.Kf1 Kf6 31.f4 g5 32.g3 e5 33.Kf2 ef4 34.ef4 gf4 35.gf4 Nf5 36.Bf5 Kf5 37.Kf3 h5 38.h3 Ke6 ½–½. hal1958 – raichu, playchess.de, 2003.

9.d3 h6 10.Nbd2 (10.Ne5 Nbd7=) 10...Bd6 (10...a6 11.ba6 Na6 12.Qb3=) 11.h3 (11.d4 a6=) 11...Nbd7 12.Qc2 Rc8 (12...a6 13.ba6 Ra6 14.d4=) 13.a4 (13.a3 a6=) 13...e5 (13...Re8 14.a5=) 14.Nh4 (14.cd5 Nd5 15.a5 Nb4+=) 14...d4 (14...Re8 15.Nf5 Bc7 16.cd5 Nd5 17.Ne4=) 15.Nf5+= Bb8 (better is 15...Ne8+=) 16.f4 (16.Qd1 Re8+=) 16...Re8 (16...de3 17.fe5 Be5= (worse is 17...ed2 18.ef6 Nf6 19.Qd2+/–)) 17.fe5= de3 (17...Re5 18.e4 Re6=) 18.Ne3 (better is 18.ef6!? Qc7 19.Nf3 Bf3 20.g3 Be2 21.Qe2+/–) 18...Be5+= 19.Bf3? (better is 19.Be5!? Re5 20.Bf3 Re3 21.Bb7+=) 19...Bf3 (19...Bb2 20.Qb2 Bf3 21.Rf3–+) 20.Rf3 (20.Be5!? Ne5 21.Nf3 Qd3 22.Qd3 Nd3 23.Nf5-/+) 20...Bb2–+ 21.Qb2 Ne5 22.Rg3 (22.Raf1 Nf3 23.Rf3 Qd3–+) 22...Nd3 (better is 22...Nh5!? 23.Ng4 Ng3 24.Ne5 Ne2 25.Kf1 Nf4–+) 23.Qc2-/+ Qd4 (23...Nh5 24.Rf3–+) 24.Nb3 Qh4?? (better is 24...Qe5 25.Nf5 Qf5 26.Qd3 Qe5-/+) 25.Nf5+– Ne1 (25...Qg3 26.Ng3 Nb4+–) 26.Qf2 (better is 26.Qc3 Qg3 27.Qg3 Nh5+–) 26...Qe4 1–0. DEFFM – titodeb, freechess.org, 2016.

9.cd5 ed5 10.Qc2 a6=.

9.cd5 ed5 10.d4 c4 11.Nc3=.

9.cd5 ed5 10.d4 Nbd7 11.Nh4 (11.dc5 bc5 12.Nc3 Rc8=) 11...Re8 (11...Ne4 12.Nf5=) 12.Nf5 (12.dc5 bc5 13.Nf5 Qb6=) 12...Bf8 (12...c4 13.Ba3 Ba3 14.Na3=) 13.Nd2 (13.dc5 bc5 14.Nc3 g6=) 13...g6 14.Ng3 Rc8 (14...c4 15.Bf3 Qc7 16.Qc2=) 15.Qa4 Qc7 Black prepares the advance c4 (15...Ra8 16.dc5 bc5 17.Rac1=) 16.dc5 bc5 17.Rfc1 (17.Qa7?? Ra8 18.b6 Qc8 19.Qa8 Qa8 (19...Ba8?! 20.a4–+) 20.Bf6 Nf6–+) 17...Bg7 18.Rc2 (18.Qa7? Ra8 19.b6 Qc8 20.Qa8 Qa8–+) 18...Qb8 (18...Qb6 19.Rd1=) 19.Rac1 c4 20.Bd4 Nb6 (20...Nc5 21.Qa5=) 21.Qa5+= Nfd7 (21...Re6 22.Bf3+=) 22.Bg7 Kg7 23.Nf3 Rc5 (23...Nc5 24.Rd2+=) 24.Qb4 (24.Qc3 Kg8+=) 24...Nc8 (24...f5 25.Nd4+=) 25.Nd4 (25.Qc3 Ne5+/–) 25...Nd6 (25...Qe5 26.Qc3+=) 26.a4 Rcc8? (better is 26...Qd8+/–) 27.Qd6!!+– (27.Qd6 Qd6 28.Ngf5 gf5 29.Nf5 Kf8 30.Nd6+–) 1–0. Johansson,Ragnar – Seger,Yngve, corr SSKK, 1989.

9.cd5 ed5 10.d4 Re8 11.dc5 bc5 12.Nbd2 Nbd7 13.a4 Bd6 14.Bd3 Ne4 15.Qc2 Nd2 (15...Rc8 16.Rac1=) 16.Nd2 (16.Bh7 Kh8 17.Nd2–+) 16...Nf8 17.a5 d4 (17...Rc8 18.Rfc1=) 18.Rfd1 (18.Nc4!?+=) 18...Qg5= 19.Ne4 Bh2 20.Kh2 Be4 21.Be4 Qh4 22.Kg1 Re4 23.Qc5 de3 24.fe3 Ne6 25.Qc6 Rf8 26.Rd3 Rg4 27.Be5 (27.b6 Rc4 28.Qf3 ab6 29.ab6 Ng5=) 27...Ng5 28.Rd2 (28.g3 Qh5 29.Bf4 Nh3 30.Kf1 Nf4 31.ef4 Qh3 32.Qg2 Rf4 33.Kg1 Qf5-/+) 28...Qh5 29.Bd6 Rh4 30.Bf8 Rh1 31.Kf2 Qh4 32.Ke2 Ra1 33.Kd3 Qe1 34.Be7 Qf1=+ 35.Kc3 h6 36.Bg5= hg5 37.a6 Qc1 38.Kd3 Qb1 39.Kd4 Ra4 (40.Ke5 f6 41.Ke6 Re4 42.Kd7 Re3 43.Qc4 Kh8 44.Qc8 Kh7 45.Qc2 Qc2 46.Rc2 Rb3+/–). mrkt – lostlyrics, gameknot.com, 2002.

9.cd5 Bd5 10.d4 Bb7 11.Nbd2 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Nbd7 15.dc5 Bc5 16.Re1 Qe8 17.Ne5 Ne5 18.Be5 Nd5 19.Bf3 (better 19.Bc4!?=) 19...Qb5-/+ 20.Ne4 Qa6 (20...Be7 21.Qd4 Qb4 22.Qb4 Bb4 23.Rb1-/+) 21.Nc5 bc5 22.Bd5 (22.Qb3 c4 23.Qb2 f6=+) 22...Bd5 23.e4 Bb7 24.Qg4 Do you see the mate threat? 24...f6 25.Ba1 (25.Bb2 Qc4-/+) 25...Qd6 (25...e5 26.Rd1-/+) 26.h4 (26.e5!? fe5 27.Re5=+) 26...f5?? (better 26...e5-/+) 27.ef5 (27.ef5 Qe7 28.fe6+–; 27.Qg7) 1–0. Markzela (1800) – mustaphcarsan (1780), lichess.org, 2020.

9.cd5 Nd5 10.Nc3 Bf6 11.d4 Nd7 12.Ne4 Be7 13.dc5 Nc5 14.Nc5 Bc5 15.Qa4 Qe7 16.Rfd1 Rfd8 17.Rac1 h6 18.Bd4 Bd6 19.Ne5 Qe8 20.Bh5 Be5 21.Be5 a6 22.Qg4+/– g6 23.e4 Nb4 24.Qf4 Kh7?? 25.Bg6! fg6 26.Rc7 (26.Rc7 Qd7 27.Rcd7 Rd7 28.Rd7 Kg8 29.Qf7#) 1–0. pcmvr (2775) – igj (2405), net–chess.com, 2008.

9.cd5 Nd5 10.d4 Nd7 11.Nbd2 cd4 12.Bd4 Bf6 13.Rc1 a6 A) 14.ba6 Ba6 15.Nc4 (15.Ne4 Bd4 16.Nd4 Qh4 17.Nd6 Nc5 18.Ba6+=) 15...b5 16.Nce5 Ne5 17.Ne5 Be5 18.Be5=; B) 14.a4 B1) 14...ab5 15.ab5 (15.Bb5 Bd4 16.Nd4 Nc5 17.Nc4 Qg5 18.Nc6=; 15.Bf6 Qf6 16.Ne4 Qe7 17.Bb5 Rfd8 18.Qc2=) 15...e5 16.Bb2 Re8 17.Ne4 Be7 18.Bc4+=; B2) 14...Bd4 15.Nd4 Nc5 16.Nc4 ab5 17.ab5 Qc7 18.Qc2=; C) 14.Bf6 C1) 14...N7f6 15.a4 (15.Qb3 Qe7 16.a4 Nd7 17.e4 Nf4 18.Qe3=; 15.ba6 Ba6 16.Ba6 Ra6 17.Qb3 Qa8 18.Rc2=; 15.e4 Nf4 16.e5 Bf3 17.Bf3 N6d5 18.Ne4+=) 15...ab5 16.Bb5 Nc7 17.Bc6 Bc6 18.Rc6=; C2) 14...N5f6 15.Qc2 (15.ba6 Ba6 16.Nc4 Qe7 17.Qb3 Nd5 18.Rfd1=; 15.Rc2 ab5 16.Qb1 Qe7 17.Bb5 Rfc8 18.Rd1=; 15.a4 Nc5 16.Qc2 ab5 17.ab5 Qc7 18.Nb3=) 15...ab5 16.Bb5 Qe7 17.Rfd1 Rfc8 18.Qb2=; C3) 14...Qf6 15.Ne4 (15.ba6 Ba6 16.Ne4 Qg6 17.Ba6 Ra6 18.Nc3+=) 15...Qe7 16.ba6 Ba6 17.Nc3 Bb7 18.Nd5=.

9.cd5 Nd5 10.d4 Nd7 11.Nbd2 cd4 12.Bd4 Bf6 13.Rc1 Bd4 14.Nd4 Nc5 15.Nc4 (15.N2b3 Rc8 16.Bc4 Qg5 17.Nf3 Qf6 18.Nfd4=) 15...Qe7 (15...a6 16.a4 Qg5 17.Bf3 Rfd8 18.Nb6=) 16.Ne5 (16.Qc2 Rfc8 17.Bf3 Nb4 18.Qe2=) 16...Qg5 (16...a6 17.Nec6 Qf6 18.Bf3=) 17.Nec6 (17.Ndc6 a6 18.a4=) 17...Rfc8 (17...a6 18.a4=) 18.Bf3 (18.Bc4 Ne7 19.f4 Qf6=) 18...Rc7 19.a4 a5 20.Re1 (20.Rc4 Rac8=) 20...Qg6 (20...Nb4 21.Nb4 ab4 22.Rc4=) 21.g3 (21.Bd5 ed5 22.Re2 Bc6 23.bc6 Rac8+=) 21...h6 (21...Rac8 22.Rc4=) 22.Be2 (22.Bd5 ed5 23.Re2 Bc6 24.bc6 Nd3=) 22...Bc6 23.Nc6 Qe4?? (better is 23...Qf6!? 24.Rc4 Rac8=) 24.Rc4 (24.Rc5!? Ne3 25.Bf3 (25.fe3?! Qe3 26.Kg2 Qc5=) 25...Nd1 26.Be4 Nf2 27.Kf2 bc5 28.b6+–) 24...Qg6 (24...Qh7 25.Bf3 Rd7 26.Ne5+/–) 25.Bh5 (25.e4!? Ne4 26.Re4+/–) 25...Qd3 26.Be2 Qd1 (26...Qg6 27.e4 Ne4 28.Re4+/–) 27.Rd1+= Kf8 (27...Na4!? 28.Ra4 Nc3+=) 28.Bf3+/– Rac8 (28...Rd7 29.Ne5 Rdd8 30.Rcd4+/–) 29.Bd5 ed5 30.Rd5 Ne6 31.Rg4 (31.f4 Nc5+–) 31...g6+/– 32.Re4 Ng5 (32...Kg7 33.Rc4+/–) 33.Rc4+– Ne6 34.Rd1 Nd8 (34...Nc5 35.Na5! ba5 36.b6+/–) 35.Rdc1 (better is 35.Na5!? Rc4 36.Nc4 Rc4 37.Rd8 Ke7+–) 35...Nc6+/– 36.Rc6 (better is 36.bc6!? Ke7 37.h4+/–) 36...Rc6= 37.bc6 (worse is 37.Rc6 Rc6 38.bc6 Ke7-/+) 37...Ke7 38.c7 Kd6 39.Rc4 (39.Rd1!? Kc6 40.Rb1=) 39...Rc7+= 40.Rf4 Re7 (40...b5 41.ab5 Kc5 42.Rh4-/+) 41.Rd4 (41.h4 h5+=) 41...Kc6 42.Rd8 (42.Rh4 h5+=) 42...b5 (42...Re4 43.Rf8 Ra4 44.Rf7 Ra1 45.Kg2-/+) 43.Ra8 Kb6 44.ab5 Rb7 45.Kf1 (45.h4 Kb5 46.g4 a4-/+) 45...Kb5-/+ 46.Ke1 Kb4 47.Kd1 a4 48.Kc1 h5 (48...a3 49.Kb1 Kc4 50.Ka2 Rb2 51.Ka3 Rf2 52.Ra4 Kd5 53.Rh4-/+) 49.Rd8 (49.Kb2 g5+=) 49...Kb3 50.Kb1 a3 (50...g5 51.Rd3 Kb4 52.h4 gh4 53.gh4+=) 51.Rd3?? (better is 51.Ka1+=) 51...Kc4–+ (51...Kc4 52.Ka2 Kd3 53.Ka3 Kc3–+) 0–1. Schwichtenberg,Juergen – Burger,Anton, Wch Seniors Gladenbach, 1999.

9.cd5 Nd5 10.d4 Nd7 11.Nbd2 cd4 12.Bd4 Bf6 13.Rc1 e5 14.Ba1 A) 14...a5 15.Bc4 (15.ba6 Ba6 16.Ba6 Ra6 17.Nc4 Ne7 18.Nce5+=; 15.Ne4 Be7 16.Ne5 Ne5 17.Be5 Ne3 18.fe3+=; 15.Bd3 Nc5 16.Ne4 Nd3 17.Qd3 Nb4 18.Qb1=) 15...Rc8 16.Ne4 Be7 17.Ne5 Ne5 18.Be5+/–; B) 14...a6 15.ba6 (15.Ne4 ab5 16.Nd6 Nc5 17.Nb7 Nb7 18.Bb5+=) 15...Ba6 16.Ba6 Ra6 17.Nc4 Ne7 18.Nce5+=; C) 14...Re8 15.Ne4 (15.e4 Nf4 16.Bc4 Nc5 17.Qc2 a6 18.Rb1=; 15.Bc4 Nc5 16.Nb3 Rc8 17.Nc5 Rc5 18.Qa4=) 15...Be7 16.Bc4 N7f6 17.Qd3 Rc8 18.Be5+/–; D) 14...Rc8 15.Ne4 (15.Bc4 Nc7 16.e4 Qe7 17.Qa4 Nc5 18.Qa7+=; 15.Rc8 Qc8 16.Ne4 Be7 17.Qb3 N5f6 18.Nf6=) 15...Qe7 16.Qd2 Rfd8 17.Qb2 Qb4 18.Rc8+=.

9.Ne5 a6 10.a4 (10.d3 ab5 11.cb5 Qd6=+) 10...Nbd7 11.ba6 Ra6 12.Nd7 Qd7 (< 12...Nd7 13.cd5 Ra5 14.de6 fe6 15.d4+=) 13.cd5 (13.d4 dc4 14.Bc4 Raa8=) 13...Qd5=+ 14.e4 Qe4 15.Bf3 Qb4 16.Bb7 Qb2 17.Nc3 (17...Ra7 18.Rb1 Qb1 19.Qb1 Rb7 20.Qb5=). Bulcourf,Carlos (2215) – Mellano,Santiago (2270), Buenos Aires FMDA–chT, 1996.

9.Ne5 dc4 10.Bc4 a6 11.Nc3=.

9.Ne5 Nbd7 10.Nc6 Bc6 11.bc6 Nb8 12.cd5 (12.Qa4 Qc7=+) 12...ed5-/+ 13.Qa4 Qc7 14.Nc3 (14.Bf6 Bf6 15.Nc3 Qc6-/+) 14...Nc6-/+ 15.Bb5 Ne5 (15...Rfc8 16.Ba6 Rd8 17.Bb5-/+) 16.f4 Ng6 17.d3?? (better 17.Rac1=+) 17...a6!–+ 18.Ba6 d4 (better 18...b5 19.Nb5 (19.Qb5?? Rfb8–+) 19...Qc6 20.Qd1 Ra6 21.a4–+) 19.ed4 cd4 20.Nb5 Qc6 21.Rac1 (21.Bd4? Bc5–+) 21...Qd5?? (better 21...Bc5 22.Rc2 Nh4–+) 22.Nc7+– (22.Nd4 Bc5 23.f5 Nh4–+; 22.Bd4 Bc5 23.Bc5 bc5=+) 22...Qh5 (better 22...b5 23.Qd4 Qd4 24.Bd4 Rad8 25.Nb5 Nh4+–) 23.Na8 Ra8 24.Bd4 Nd5 25.Qc6 (25.Rce1 Bf8 26.Qc4 Ngf4+–) 25...Ra6 26.Qc8 (26.f5 Ngf4 27.Qe8 Bf8+–) 26...Bf8 27.Qa6 Ngf4 28.Rce1 Qg4 (28...Ne2 29.Re2! Qe2 30.Qc4+–) 29.g3 Nh3 (29...Ne2 30.Re2! Qe2 31.Qc4+–) 30.Kg2 Qd4 31.Kh3 Ne3 32.Rf4?? (better 32.Re3 Qe3 33.Qc4+–) 32...Qd7+= 33.g4 Ng4 34.Qa4 (better 34.Qb6 Nf6 35.Kh4+=) 34...b5?? (better 34...Qd3 35.Kg4 h5 36.Kh4 Qd2+=) 35.Qd4+– Qc8 36.Kh4 (36.Rg4?! h5+–) 36...Bc5?? (36...h5 37.Rf7! Kf7 38.Qd5 Kf6 39.Rf1 Ke7+–) 37.Qc5! g5 (37...Qc5 38.Re8 Decoy) 38.Qg5 (38.Qg5 Kh8 39.Rf7 Qg8 40.Re8 Qe8 41.Qg7) 1–0. GuestDXKH – GuestJWLN, freechess.org, 2019.

9.Ne5 Nbd7 10.Nc6 Qe8=.

9.Ne5 Nbd7 10.f4 Ne5 (10...dc4 11.Bc4 a6 12.Nc6=) 11.fe5= Nd7 12.d4 Qc7 13.Nd2 (13.Qd3 f6 14.Bg4 f5=) 13...Bg5+= 14.Rf3 (14.Kh1 Be3 15.cd5 Bd5 16.dc5 bc5-/+) 14...cd4 (14...dc4 15.Rg3 c3 16.Bc3=) 15.ed4+= dc4 16.Rg3 (16.Rc3 Bd2 17.Qd2 Bd5=) 16...Bf4 (16...Bd2 17.Qd2 f6 18.ef6 Nf6 19.Rc3–+) 17.Rh3 (17.Rc3 Bd2 18.Qd2 Bd5=) 17...Bd5 (17...Bd2!? 18.Qd2 Bd5+=) 18.Qc2= The mate threat is Qxh7 18...f5 19.Nc4 Rac8 (19...a6!?+=) 20.Rc3= Qd8 21.Rf1 (21.Nd6 Be3 22.Kh1 Rc3 23.Bc3 Qg5=) 21...Qg5 (21...Qh4 22.g3 Qh3 23.Rf2=) 22.g3 Be3 23.Re3 Rc4 24.Qd2 (24.Qc4 Qe3) 24...Rc7 (24...Rc2 25.Qc2 Qe3 26.Rf2=) 25.Rc1 (25.Rd3 Qd2 26.Rd2 Rfc8= (worse is 26...Ba2 27.Ba3 Bd5 28.Bf8 Kf8 29.g4+/–)) 25...Rfc8 (25...Rc1 26.Bc1 f4 27.Ra3=) 26.Rc7= Rc7 27.a3 Nf8 (27...Rc2 28.Qc2 Qe3 29.Kf1=) 28.Bc1 (28.Rd3 Qg6=) 28...Qd8 (28...f4 29.Rc3 Rf7+=) 29.Rc3+= Ng6 30.Qc2 (30.Rc7 Qc7 31.Qg5 Qd7+=) 30...Be4= 31.Bd3?? (better is 31.Qd2=) 31...Qd4–+ (31...Qd4 32.Qf2 Qc3 (32...Rc3?! 33.Qd4 Rc1 34.Bf1+=) 33.Be4 Qc1 34.Qf1 Qe3 35.Kg2 Qe4 36.Kg1 Qe3 37.Kh1 Rc1 38.Qc1 Qc1 39.Kg2 Qa3–+) 0–1. Sundin,Thommy – Baecklin, Sundsvall Sweden, 1989.

9.Ne5 Nfd7 10.f4 Ne5 11.fe5 d4 (11...a6!?=) 12.Bf3 Bf3 13.Qf3 (13.Rf3 a6 14.ed4 ab5 15.cb5 cd4-/+) 13...Nd7 14.ed4 cd4 15.Bd4 Qc7 16.Qc3 Rac8 17.d3 (17.Rc1!?+=) 17...Bc5= 18.Re1 Rfd8 (18...Ne5 19.Bc5 Qc5 20.d4 Qc4 21.de5 Qc3 22.Nc3 Rc3 23.Rad1-/+) 19.Bc5= Nc5 20.Re3 Na4 21.Qc2 (21.Qe1!? Nb2 22.Qe2-/+) 21...Qc5-/+ 22.Qe2? (better is 22.Kf2 Qd4 23.Qa4 Qa1 24.Nd2-/+) 22...Qd4–+ 23.Nc3 Nc3 (23...Qc3?! 24.Rb1–+) 24.Qe1 Ne2! 25.Kf2 (25.Qe2 Qa1 Discovered attack (25...Qa1 Deflection)) 25...Nf4 26.Rd1 Ng6 27.Kf1 Qf4 28.Kg1 Qd4 (28...Rc4!? 29.g3 Qg5 30.dc4 Rd1 31.Qd1 Qe3 32.Kf1–+) 29.Kf1 Rc5 30.Re4 Re5 31.Rd4 Re1 32.Ke1 Rd4 33.Ke2 Kf8 34.a4 Rd7 (34...Nf4 35.Ke3 e5 36.g3–+) 35.g3 Ke7 36.a5 Kd6 37.d4 Kc7 (37...ba5 38.Ra1 e5 39.c5 Kd5 40.c6–+) 38.ab6 ab6 39.Ke3 Ne7 40.g4 f5 41.h3 (41.Ra1 fg4 42.Ke4 Nf5 43.Ra7 Kd8 44.Rd7 Kd7–+) 41...fg4 42.hg4 h6 (42...e5 43.d5–+) 43.Ke4 (43.Ra1 Kd6–+) 43...Ng6 (43...Ng8 44.g5–+) 44.Ra1 Kb8 (44...Kb7 45.c5 Rd5 46.Rc1–+) 45.Rf1? (better is 45.Ra6 Kb7 46.c5 bc5 47.dc5–+) 45...Rc7 46.Rc1 Rf7 47.Rg1 Rf4 48.Ke3 e5 49.de5 Rc4 50.e6 Rc5 51.Kd4 (51.Rf1 Rb5 52.Rf7 Re5 53.Kd3 Re6 54.Rg7 Ne7–+) 51...Re5 (51...Kc7 52.Rf1–+) 52.Rf1 Re6 53.Rf7 Re7 54.Rf5 Kc7 55.Kd5 Kd7 56.Rf3 (56.Kd4 Ke6–+) 56...Re5 57.Kd4 Rg5 58.Rf7 Ne7 59.Rf4 Rg4 (better is 59...Rb5 60.Kd3 g6–+) 60.Kc4?? (better is 60.Rg4 Kd6 61.Rg2+=) 60...Rf4–+ (60...Rf4 61.Kb3 g5 62.Kc3 Nd5 63.Kb3 g4 64.Kb2 g3 65.Ka2 g2 66.Kb3 g1Q 67.Kb2 Rb4 68.Kc2 Qb1 69.Kd2 Rb2) 0–1. Nyoger,Istvan (1860) – Nagy,Szilard (1695), HUN–chT2 Toth, 2009.

9.h3 Nbd7 10.d3 Qc7 (10...Re8 11.Nc3=) 11.Qc2 (11.Nc3 a6=) 11...e5 12.cd5 Nd5 13.e4 (13.Nc3 Nc3 14.Qc3 Bf6=) 13...Nf4+= 14.Re1 (14.Na3 a6+=) 14...Rfd8 15.Bf1 f6 (15...Rac8 16.Na3+=) 16.Nh4 (16.d4 ed4 17.Bd4 Kh8=) 16...Nf8+= 17.Nf5 N8e6 18.Ne7 (18.Qb3 Qd7+=) 18...Qe7+= 19.Qc4 (19.Qb3 Qf7-/+) 19...Kh8 (19...Qf7 20.Na3-/+) 20.g3 Ng6 (20...Ng5 21.Rc1 Nfh3 22.Kg2–+) 21.a4 (21.Nd2 Nd4-/+) 21...Nd4 22.Bg2 (22.Nd2 a6+=) 22...Qd7 (22...a6 23.Nc3-/+) 23.Re3 (23.Na3 Rdc8+=) 23...a6 24.Na3 ab5 25.Nb5 Ba6 (25...Bc6 26.Nd4 ed4 27.Re2–+) 26.Kh2 (26.Bd4!? Qd4 27.Ree1+=) 26...Bb5 (26...Nb5 27.ab5 Bb5 28.Qb3–+) 27.ab5-/+ Ra1 28.Ba1 Ra8 (better is 28...Qb5!? 29.Re1 Qb3-/+) 29.Bd4+= Qd4 (29...ed4 30.Re2+=) 30.Qd4 (30.Qe6 Qd8+=) 30...cd4 (30...ed4 31.Re2 Ra3 32.e5 fe5 33.f4+=) 31.Re2+= Ra3 (31...Kg8 32.Bf3 Ra3 33.Bg4-/+) 32.Rd2 (better is 32.Rc2!? Rc3 33.Ra2=) 32...Rb3-/+ 33.Rc2 (better is 33.Bf3-/+) 33...Rc3 (better is 33...Kg8-/+) 34.Rc3?? (better is 34.Ra2 Kg8 35.Ra6 Rd3 36.Bf1=) 34...dc3–+ 35.d4 c2 (better is 35...ed4!? 36.f4–+) 36.de5 (36.d5 c1Q–+) 36...Ne5 37.f4 Nd3 38.e5 fe5 39.Be4 c1Q 40.Bd3 Qd2 (40...Qd2 41.Kg1 Qd3 42.fe5 Qg3 43.Kh1 Qh3 44.Kg1 Qg3 45.Kh1 Qe5 46.Kg1 Qe2 47.Kh1 h5 48.Kg1 h4 49.Kh1 h3 50.Kg1 Qg2) 0–1. GuestNMFD – GuestVGDP, freechess.org, 2016.

10.ba6 Na6 11.cd5 Nd5 12.Na3 Nab4 13.Nc4 Ba6 14.Qb3 Bf6 15.Bf6 Qf6 16.d3 Rfb8 17.Nfe5 (17.d4 Nc6=+) 17...Qe7 (17...Bc4!? 18.Nc4 b5–+) 18.e4 (better is 18.Rfd1!?=) 18...Nf4-/+ 19.Rfe1 (19.Bf3 f6 20.Ng4 Nc6-/+) 19...Ne2 (better is 19...Bc4!? 20.Nc4 b5–+) 20.Re2=+ f6 21.Nf3 e5 (21...Rd8 22.Rd2 b5 23.ab5 Bb5=) 22.Rd1?? (better is 22.Nb6 Qf7 23.Qf7 Kf7 24.Na8 Bd3 25.Re3 Ra8 26.Ne1+/–) 22...Qe6 23.Qc3? (23.Nfd2 Nd3! 24.Qd3 Rd8-/+) 23...Rd8 (better is 23...Nd3 24.Nfd2 Nf4–+) 24.Ne1?? Bc4–+ 25.Red2 Ba6 26.f3 Rd6 27.Nc2 Rad8 28.Ne3 Bd3 29.a5 c4 30.ab6? Rb6 31.Nc4 Bc4 32.Rd8+= Kf7 33.R1d7 Kg6 34.Qd2?? Nd3 35.h4? Rb1 36.Kh2 Qb6 37.Rd3=+ Qg1 38.Kg3 Bd3 39.Rd3 Qf1 40.Rd7 Qe1 41.Qe1 Re1 42.h5 Kh6 43.Kg4 Re2 44.g3 Rh2 45.Rd8 Rh5 46.Rh8 Rh1 47.f4 ef4 48.gf4 Rg1 49.Kf3 Kg6 50.e5 fe5 51.fe5 Re1 52.Kf4 h5 53.Ra8 Rf1 54.Ke4 Kg5 55.e6= Re1 56.Kd5 h4 57.Kd6 Rd1 58.Kc7? Kf6–+ 59.Ra6? Ke7 60.Kc8 h3 61.Ra3 h2 (62.Rh3 h1Q 63.Rh1 Rh1–+) 0–1. ArmandoS – IPKnightly, Live Game Caissa's Web, 2004.

10.d3 Nbd7 11.Nbd2 Qc7 12.g3 Rad8 13.d4 Rfe8 14.Nb3 (14.Rc1 dc4 15.Nc4 Bd5=+) 14...Ba8 (14...dc4!? 15.Bc4 cd4–+) 15.Qc2 cd4 16.Nbd4 Rc8 17.Rac1 Nc5 18.cd5 Nd5 19.Nc6 Bc6 20.bc6 Red8 (< 20...Qc6 21.Bb5 Qa8 22.Be8 Re8 23.Qc4+=) 21.Bb5 Nb4 22.Qe2 Rd5 23.Be5?? (23.Nd4 Bf6=) 23...Bd6?? (23...Re5 24.Ne5 Qe5 25.f4–+) 24.e4?? (better is 24.Bc3=) 24...Re5–+ 25.Ne5 Be5 26.Qf3 Nc6 27.Bc6 Qc6 28.Qh5 (28.Rc4 f5 29.Qh5 Rf8–+) 28...Bd4 (28...Qe4?! 29.Rfe1 Qa4 30.Qe5–+) 29.Rfd1 e5 30.Qg4 Rd8 31.Kg2 Qe4 32.Qe4 Ne4 33.Rf1 Nc5 34.f4 Na4 35.fe5 Be5 36.Rc6 f6 37.Rfc1 Rd2 (38.Kh3 Kf7–+) 0–1. stoker – rustybedsprings, Live Game Caissa's Web, 2004.

10.d3 Nbd7 11.Nbd2 Qc7 12.h3 (12.Rc1 dc4 13.Nc4 Ng4=) 12...Rad8 13.Qc2 h6 (13...Rfe8 14.Rac1=) 14.Rfc1 Bd6 15.d4 Rc8 16.Nb3 (16.cd5 Nd5 (16...Bd5? 17.e4+–) 17.Nc4 Be7=) 16...dc4 17.Qc4 Bd5 18.Qc2 Qb7 (18...Ne4 19.Nbd2 Qb7 20.Ne4 Be4 21.Qc3=) 19.dc5 Nc5 20.Nc5 Bc5 (20...Rc5 21.Qd1 Ne4 22.Rc5 Nc5 23.Bc4=) 21.Bf6 gf6 22.Qb2 Kg7 23.Nh4 Bd6 24.Qd4 Rfd8 (24...Be5 25.Qg4 Kh8 26.Rab1=) 25.Qg4 (25.Rc8 Rc8 26.Bf3 Rc5+=) 25...Kf8 26.Bf3 Ke7 (26...Be5 27.Rab1=) 27.Bd5 (better is 27.Qg7!? Rc1 28.Rc1+/–) 27...Qd5= 28.Rc8 Rc8 29.Qg7 (29.Nf3!?=) 29...Qg5+= 30.Qg5 fg5 31.Nf3 e5 (31...f5 32.Kf1+=) 32.Nd2 Rc2 33.Ne4 Bc7 (33...f5 34.Nd6 Kd6 35.g4-/+) 34.f3 (34.g4 Ke6=) 34...f5 (34...Bd6+=) 35.Nf2 (better is 35.Ng3!? Ke6 36.e4+=) 35...Bd6-/+ 36.Nd3 (36.Kf1!?-/+) 36...Rd2 37.Nf2 Bc5 38.Nd1 (38.Re1–+) 38...f4 39.Kf1 (39.Nc3 fe3 40.Re1 e2 41.Kh2–+) 39...fe3 (39...Be3 40.Ne3 fe3 41.Ra3 e2 42.Ke1-/+) 40.Ke1 (40.Nc3 Rf2 41.Ke1 Rg2 42.Ra2–+) 40...Rc2 (40...Rc2 41.Rb1 e2–+) 0–1. Genne,Rene (1795) – Koch,Alain (1950), Saint Denis RUF, 2012.

10.d4 Nbd7 11.Nc3 Rc8 12.cd5 ed5 13.Qb3 (13.dc5 bc5 14.Rb1 Qb6=) 13...Re8 Black prepares c4 (13...c4 14.Qc2=) 14.Rad1 (14.dc5 Nc5 15.Qd1 Nfe4=) 14...c4+= 15.Qc2 Bd6 16.Rfe1 (16.Qf5 Qe7+=) 16...Qc7 (16...Ne4 17.Ne4 Re4 18.Rc1+=) 17.Bf1 (17.Qf5 Nf8=) 17...Ne4+= 18.g3 Ndf6 19.Bh3 Rcd8 20.Rf1 (20.Nd2 Bb4+=) 20...Bc8-/+ 21.Bg2 Bg4 (21...Bf5 22.Qe2-/+) 22.Rc1+= Qc8 (22...Nc3 23.Bc3 Ne4 24.Nd2+=) 23.Ne4 (23.Ne5 A) worse is 23...Be5 A1) worse is 24.Ne4 Ne4 (worse is 24...de4 25.de5 Nd7 26.Be4+/–) 25.de5 Bf5+=; A2) 24.de5 Nc3 25.Qc3+=; B) 23...Nc3 24.Ng4 Qg4 25.Bc3 Qe6+=) 23...Ne4 (23...Re4 24.Ne5 Bh3 25.Nc4 dc4 26.Be4 Ne4 27.Qe4 Bf1 28.Kf1+–) 24.Ne5 Bf5 (24...Be5 25.de5 Bf5 26.g4+=) 25.Qd1 (25.g4 Be5 (25...Bg4?! 26.f3 Be5 27.de5=) 26.de5 Bg6+= (worse is 26...Bg4 27.f3 c3 28.fe4 cb2 29.Qb2+=)) 25...f6 (25...Be5!? 26.de5 Qe6+=) 26.Nc6= Rd7 27.g4 (27.f3!? Ng5 28.e4 de4 29.fe4 Be4 30.Rc4=) 27...Bg6+= 28.f3 Ng5 29.h4 (29.e4 Bf4 30.Rc3 de4 31.Rc4 ef3 32.Bf3 Nf3 33.Qf3 Bc7+=) 29...Ne6 30.f4 Nc7 31.f5 Bf7 32.Qf3 Na6 33.g5 Nb4 34.Qg4 (34.Nb4 ab4 35.g6 hg6 36.fg6 Bg6 37.Qd5 Bf7 38.Qf3-/+) 34...Re3-/+ (worse is 34...Nc6 35.gf6 Bf8 36.bc6 Qc6 37.fg7=) 35.g6 Be8 (35...hg6 36.fg6 Be6 37.Qh5 Nc6 38.Rce1+=) 36.Rc3 (36.Rfe1 Re1 37.Re1 Nd3 38.Bd5 Kh8=) 36...Rc3-/+ 37.Bc3 Bf8 (37...Kh8 38.Bb4 Bb4 39.Qh5=) 38.Qe2 (38.Bb4!? Bb4 39.Rb1=) 38...hg6+= 39.fg6 ½–½. Myers,Hugh Edward – Riego Prieto,Victorio, Lugano, 1968.

10.d4 Nbd7 11.Nbd2 Rc8 12.Rc1 Rc7 13.cd5 Nd5 14.dc5 Nc5 15.Qc2 (15.Bd4 Qd7=) 15...Nb4 16.Qb1 Ncd3?? (16...Na4 17.Rc7 Qc7 18.Be5=+) 17.Rcd1?? (better 17.Rc7 Qc7 18.Bd3 Nd3 19.Qd3+–) 17...Nb2=+ 18.Qb2 Bf6 19.Qb1 Qa8 20.Nc4? (20.e4 Bc3=+) 20...Qa7 (better 20...Be4!? 21.Qb3 Bc2–+) 21.Nd6 (21.e4 Ba8=) 21...Bd5=+ 22.Nd4 (22.Ne4 Be7=) 22...Rd8 (22...Be7 23.Ne4=+) 23.Ne4= Bd4 (23...Be7 24.Rc1=+) 24.Rd4 Rcd7 (24...f5 25.Ng5 Rcc8 26.e4=+) 25.Rfd1 Be4 (25...e5 26.R4d2=) 26.Qe4 Qc7?? (better 26...Rd4 27.Rd4 Rd4 28.Qd4 Qc7=) 27.Rd7+– Rd7 28.Qa8 Rd8 29.Qd8 Qd8 30.Rd8 1–0. BeepBeepImAJeep (2595) – Gilevich (2345), lichess.org, 2018.

10.d4 Ne4 11.Nbd2 Nd7 12.Ne4 de4 13.Nd2 f5 14.Nb3 Qc7 15.Qc2 Bd6 16.g3 Rae8 17.Rfd1 cd4 18.Rd4 Bc5 19.Nc5 Nc5 20.Rad1 Rf7 21.Ba3 e5 22.Rd6 Rfe7 23.R1d2 Kf7 24.Qd1 g6 25.h4 f4 26.ef4 e3 (26...ef4!? 27.gf4 Kg8=) 27.fe3+/– ef4 28.ef4 Kg8 29.Bc5 Qc5 30.Kf1 Qe3 31.R6d3 Qf4?? (better is 31...Qe6 32.Kf2 Qh3+=) 32.gf4+– 1–0. Franke,Roland – Trebing,Reinhard, corr, 1993.

10.Na3 Ne4 11.d3 Nd6 12.Nc2 Nd7 13.Ne5 f6 14.Nd7 Qd7 15.f4 ab5 16.ab5 Ra1 17.Ba1 Rd8 18.g4 dc4 19.dc4 Ne4 (better is 19...Qe8!? 20.Qc1 Qg6-/+) 20.Qd7= Rd7 21.Rd1 Rd1 22.Bd1 Nd6 23.Be2 Be4 24.Ne1 Kf7 25.Kf2 h6 26.h4 g5 27.fg5 fg5 28.hg5 Bg5 29.Be5 Ke7 30.Nf3 Bc2 31.Ng5 hg5 32.Kf3 Bb3 33.Bd6 Kd6 34.Bd3 Ke5 35.Kg3 Bd1 36.Kh3 Bf3 37.Kg3 Be4 38.Be2 Bc2 39.Kf3 Bb1 40.Bf1 Bg6 41.Be2 Bc2 42.Bf1 Bd1 43.Kg3 (43.Kf2 Ke4 (43...Bg4?! 44.Bg2–+) 44.Ke1 Bg4–+) 43...Ke4 44.Bg2 (44.Kf2–+) 44...Ke3 45.Bc6 Be2 46.Bd5 (46.Be8 Bd3 47.Kg2–+) 46...ed5 47.cd5 Bb5 48.Kg2 Ke2 49.d6 (49.Kg3 c4 50.Kg2 c3 51.Kh2 c2 52.Kg3 c1Q 53.Kg2 Qf1 54.Kg3 Qf3 55.Kh2 Kf2 56.d6 Qg2) 49...c4 50.d7 (50.Kh2 c3 51.Kg3 c2 52.d7 c1Q 53.d8Q Qe1 54.Kh2 Qh4 55.Kg2 Bc6 56.Qd5 Bd5 57.Kg1 Qf2) 50...Bd7 51.Kg1 Bc6 (51...Bc6 52.Kh2 c3 53.Kh3 c2 54.Kg3 c1Q 55.Kh2 Qh1 56.Kg3 Qh4; 51...c3 52.Kg2 c2 53.Kg3 c1Q 54.Kg2 Bc6 55.Kh2 Qh1 56.Kg3 Qh4) 0–1. Lee,Kai Jie Edward – Zamengo,Fulvio, Wch U10 Vung Tau, 2008.

10.Qc2 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.d3 Qc7 14.Nbd2 Ne8 (14...Ra8 15.Bb2=) 15.cd5 ed5 16.Qb3 Nd6 17.Bb2 Ra8 18.Ra1 Qc8 19.Ra8 Qa8 20.Nb1 Qa5 The isolani on b5 becomes a target 21.Qc3 Bf6 22.Qa5 ba5 23.Bf6 gf6 24.Nc3 Nb6 25.Bd1 Bc8 26.Nd2 Bf5 27.e4 de4 28.de4 Bd7 29.Na4 (29.Nb3!?=) 29...Na4+= 30.Ba4 Bb5 31.Bb5 Nb5 32.Nb3 a4 33.Nc5 a3 34.Nb3 Nd6 35.f3 f5 36.ef5 Nf5 37.Kf2 Kg7 38.g3 Kf6 39.f4 h5 40.Kf3 Nd6 41.g4 (41.Nc1 Kf5-/+) 41...hg4 42.Kg4 Kg6 43.Na1 a2 44.Nc2 Nf5 45.Na1 Nd4 46.h3 f6 47.h4 f5 48.Kg3 Kh5 49.Kf2 Kh4 50.Ke3 Ne6 51.Kd3 Nf4 52.Kc3 Ne6 (better is 52...Ne2 53.Kb2 Nd4 54.Ka2–+) 53.Nc2 Kg3 54.Kb2 Kf2 (54...f4!? 55.Ne1–+) 55.Nb4 Nc5 (55...Ke3!? 56.Ka2 Nc7 57.Kb3–+) 56.Nd5 Kf3 (56...a1Q 57.Ka1 Ke2 58.Kb2-/+) 57.Ka2? (better is 57.Ne7+=) 57...Ke4–+ 58.Nf6 Ke5 59.Nh5 Ne4 60.Kb2 Nf6 61.Ng3 f4 62.Nf1 f3 63.Kc1 Ne4 (63...Kf4 64.Kd2 Ne4 65.Ke1+=) 64.Kd1 (64.Nh2 f2 65.Ng4 Kd4 66.Nf2 Nd6=) 64...Kd4 (better is 64...Kf4!?-/+) 65.Ke1 Kd3 66.Nh2 f2 67.Kf1 ½–½. Zeven,Frank (1895) – Schaeffner,Joost, Leiden NED, 7th LCT Open, 2013.

10.Qc2 Nbd7 11.d3 h6 12.ba6 Ba6 13.Nc3 dc4 (13...Bb7 14.cd5 Nd5 15.Nd5 Bd5 16.Rfb1=) 14.dc4+= Qc7 15.Nb5 Bb5 16.ab5 Rfb8 17.e4 Bd6 18.Rad1 Ne5?? (better 18...Ra2+=) 19.Rd6!+- Nf3 (19...Qd6 20.Be5 Remove defender) 20.Bf3 Qd6 21.e5 Qd8 22.Ba8 Nd7 (22...Ra8 23.ef6 gf6 24.Rd1+-) 23.Be4 Nf8 (23...Qc7 24.Re1+-) 24.f4 (24.Rd1 Qh4+-) 24...g6 (24...Qc7 25.Rd1+-) 25.Rd1 Qh4 26.g3 Qe7 27.Qd3 h5 28.Qd6 Qe8 29.Qc7 Qc8 30.Qa7 Qd8 (30...h4+-) 31.Rd8 Rd8 32.Kf1 1-0. PEREIRA – Mossiey, internet, 2021.

10.d4 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 Nbd7 14.Nbd2 cd4 15.Bd4 Bc5 16.Qb3 Qe7 17.Ra1 Ra8 18.Ra8 Ba8 19.Qa2 White is in command 19...Bd5 20.h3 Bc4 21.Nc4 Bd4 22.Nd4 Qb4 (22...h6 23.Qa8 Kh7 24.Qc6+=) 23.Nc6 Qc5? (better 23...Qe1 24.Kh2 g6+=) 24.Qa8+– Qf8 (24...Nf8 25.N4e5+–) 25.Ne7 Kh8 26.Qf8 Nf8 27.Nb6 N8d7 28.Nc4 Nd5 29.Nc8 White intends b6 29...Kg8 30.b6 Kf8 31.b7 Nb8 32.e4 Ne7 (32...Nf4 33.h4+–) 33.N4d6 Nec6 34.Kf1 Na5 35.Ke2 Nb7 (35...e5 36.Ke3+–) 36.Nb7 Ke8 37.Ncd6 Ke7 38.Nc4 Nc6 39.Ke3 e5 40.Nc5 f6 41.Nd3 (41.Nd3 Ke6 42.g3+–) 1–0. BeepBeepImAJeep – pituc (1935), lichess.org, 2018.

10.d4 Nbd7 11.Nbd2 ab5 12.ab5 Qc7 13.cd5 Bd5 14.Ra8 Ra8 15.Qc2 c4 16.Bc4 Ra2 17.Rc1 Bc4 18.Nc4 Nd5 19.Qb3 Ra8 20.Nfe5 (20.Nfe5 Ne5 21.Ne5+/–; 20.e4 N5f6 21.Nce5 Qb8 22.Nf7 Kf7 23.Qe6 Kf8+– (23...Ke6?? 24.Ng5 Kd6 25.Rc6)) 1–0. pierre (2095) – george (1650), internet, 2007.

10.d4 Nbd7 11.Nbd2 dc4 12.ba6 Ba6 (12...Ra6 13.Nc4 Bd5 14.Qc2=) 13.Bc4 (13.Nc4 Qc7=) 13...Qc7 14.Qb3 Bd6 15.Ba6 Ra6 16.Nc4 Ne4 (16...Rfa8!?=) 17.Qd3+= Qb7 18.Nfe5 (18.Nfd2 Nd2 19.Nd6+– (19.Qd2?! Be7=; 19.Nd2?! Rfa8+=)) 18...Ndf6? (better is 18...Be5 19.de5 h6+=) 19.f3+– (19.Nd6?! Nd6 20.Rfd1 Nd5=) 19...cd4 20.fe4 Be5 (20...Bc7 21.ed4 Qe4 22.Qg3+–) 21.Ne5 de3 (21...Ne4 22.Bd4 f6+–) 22.Rf6! (22.Qe3?! Ne4 23.Ba3 Nc5+–) 22...gf6 23.Ng4 Rfa8 (23...Rc8 24.Nf6 Kg7 25.Qe3+–) 24.Nf6 (24.Nf6 Kg7 25.Qe3+–) 1–0. Fischbach,Rainer – Trzcinski,Ireneusz, corr ICCF Cup8 V170, 1990.

10.d4 Nbd7 11.Nbd2 Qc7 12.Ne5 Ne5 13.de5 Nd7 14.f4 ab5 15.ab5 Ra1 16.Ba1 Rd8 17.Qc2 Nf8 18.f5 (18.cd5!? ed5 19.Bc3=) 18...Bg5-/+ 19.cd5 Be3 20.Kh1 Bd5 (worse is 20...Rd5 21.Nc4 Bd4 22.Bf3 Ba1 23.Ra1=; 20...ed5?! 21.f6-/+) 21.Nc4 Bc4 (21...Bd4!?–+) 22.Bc4+= Qb7 (22...Bd4 23.fe6 Ne6 24.Be6 fe6 25.Bd4 Rd4 26.Qa2-/+) 23.Bc3 (better is 23.fe6!? Ne6 24.Be6+=) 23...Bd4+= 24.fe6 Ne6 25.Bd4 Rd4 26.Qa2 Qd7 (better is 26...Nf4!? 27.Rg1 Kf8-/+) 27.Be6= Qe6?? (better is 27...fe6 28.Qa8 Qd8=) 28.Qa8 (28.Qa8 Rd8 29.Qd8 Qe8 30.Qe8) 1–0. Dziel,Jaromir – Lozinski,Jozef, corr 1AMM Poland, 1991.

10.Na3 c3 11.Bc3 Nbd7 12.Nc4 Nd5 13.Bb2 Bf6 14.d4 cd4 15.ed4 (15.Nd4 Nc5=) 15...Nf4 16.Ba3 Ne2 17.Qe2 Be7 18.Nfe5 Ne5 (18...Ba3 19.Ra3 Nf6 20.Rd1=) 19.de5+= (worse 19.Qe5 Bf6 20.Qd6 Qd6 21.Nd6 Bd5-/+) 19...Qd5 20.Ne3 Qd7 21.Rfd1 Qe8 22.Bd6 f6 (22...Bd6 23.Rd6 Qe7 24.Rad1+=) 23.Qc4 Qf7 (23...Rf7 24.Qe6 fe5 25.Qe5+/-) 24.Be7 Qe7 25.Nf5 Qf7 26.Nd6 Bd5 27.Qd5 ed5 28.Nf7 Rf7 29.Rd5 fe5 30.Re5 Raf8 31.f3 Rf4 32.Re7 R8f7 33.Re8 Rf8 34.Re7 R8f7 35.Re6 Kf8 36.a5 ba5 37.Ra5 Rb4 38.Kf2 Rb7 39.Rea6 R4b5 40.Rb5 Rb5 41.Ra7 Rb2 42.Kg3 h6 43.h4 Rb6 44.Kg4 Rg6 45.Kh3 Rf6 46.Kg3 Rg6 (46...Rb6 47.h5 Rb5+/-) 47.Kf2+/- Rb6 48.g4 Rb2 49.Kg3 Rb3 50.h5 Rc3 51.Kf4 Rc4 52.Kf5 Rc5?? (better 52...Kg8+-) 53.Kg6 Rc6 54.Kh7 Rf6 55.Rg7 Rf3 56.Kh6 Rg3 (56...Rh3 57.Kh7 Ke8 58.h6+-) 57.g5 Rh3 58.Ra7 Rc3 59.g6 Rc8 60.Kh7 (60.Kh7 Rc7 61.Rc7 Ke8 62.g7 Kd8 63.Ra7 Ke8 64.g8Q) 1-0. onur604 (2320) - lalitkhattar (2210), Casual Rapid game, lichess.org, 2021.

10.Bc4 Bd5 11.Be2 Nbd7 (11...a6 12.Nc3=) 12.Nc3 Bb7 13.a5 (13.Qc2 Bd6=) 13...Qc7 (13...ba5 14.Qa4+=) 14.a6 Bd5 (14...Bf3 15.Bf3 Rad8 16.Ne4=) 15.Qc2+= Rad8 (15...Bf3 16.Bf3 Rad8 17.Ne4+=) 16.Nd5 Nd5 17.Rfc1 (17.d4 Rc8+=) 17...Bf6 (17...Qd6 18.d4+=) 18.d4 Nb4 (18...Rc8 19.Ra4+=) 19.Qb3 (19.Qe4 Rc8+=) 19...Qd6+= 20.Ba3 Nd5 21.Nd2 (21.Bc4 Ne7+=) 21...cd4?? (better is 21...Qb8 22.Ne4 Be7+=) 22.Bd6+– 1–0. guest691 – inyomono, chessclub.com, 2018.

10.Bc4 Nd5 11.d4 Bf6 12.Nbd2 Nd7 13.Ne4 Rc8 (13...Be7 14.dc5 bc5 15.Qc2+=) 14.Nd6+= Rc7 15.Nb7 Rb7 16.Rc1 (16.e4 Nf4+–) 16...Rc7+= 17.Qb3 cd4 18.Bd4 Nc5 19.Qa2 Bd4 (19...Rd7 20.Rfd1 Bd4 21.Rd4+=) 20.Nd4 (20.ed4 Ne4 21.Bd5 ed5 22.Rc7 Qc7 23.Qd5 Nc3+–) 20...Ne4 (20...Rd7 21.Nc6 Qh4 22.a5+=) 21.Nc6 (21.Ne6!? fe6 22.Bd5+–) 21...Qg5 22.Bd5 ed5 23.Rfd1 Rd7 (better 23...Qf6!? 24.Qc2 Qg5+=) 24.Rd5!+– Rd5 (24...Qd5 Theme: Deflection from e7 25.Ne7 A double attack) 25.Qd5! Qd5 Deflection from e7 26.Ne7 A double attack 26...Kh8 27.Nd5 Rd8 28.Ne7 (28.Rc7 g5 29.f3 Rd5 30.fe4 Re5+–) 28...g6 (28...Nc3 29.Kf1 Na4 30.Rc7+–) 29.Rc8 (29.Nc6 Rd2+–) 29...Rc8+– 30.Nc8 Nc3 31.Na7 Na4 32.Nc8 Nc3 33.Nb6 Nb5 34.Nd7 Kg7 35.Nc5 Nc3 36.Nd3 Ne2 (36...Kf6 37.f3+–) 37.Kf1 Nc3 38.f3 Nd5 39.Kf2 Ne7 40.e4 f6 41.Ke3 Kf7 42.Kd4 Nc6 43.Kc5 Na5 44.Kd6 (44.f4 Nb3 45.Kd5 Ke7+–) 44...Nb3 (44...Nc4 45.Kd7+–) 45.Kd5 Nd2 46.Nf4 (46.Kd4 h6+–) 46...Nf1 (46...g5 47.Ne6+–) 47.Kd4 (better 47.h4!?+–) 47...Nh2+= 48.Kd3 Nf1 49.Ke2 Ng3 50.Kf2 Nh1 51.Ke3 g5 (better 51...Ng3=) 52.Nh5+– Kg6 53.g4 Kf7 54.Ke2 Ke6 55.Kf1 Ke5 56.Kg1 Ng3 57.Ng3 Kf4 58.Kf2 h6 (58...Ke5 59.Ke3+–) 59.Nh5 (59.Nf5 Ke5+–) 59...Ke5 60.Ke3 Ke6 61.Ng3 (61.Kd4 Kf7+–) 61...f5 (61...Ke5+–) 62.Nf5 Kf6 63.Nh6 Kg6 64.Nf5 Kf6 65.Ng3 Kg6 (65...Ke5 66.Nh1+–) 66.Nh5 Kf7 67.Kd4 Kg6 68.e5 Kh6 (68...Kh7 69.e6 Kg6 70.Kc5 Kh6 71.e7 Kh7 72.e8Q Kh6 73.Qf8 Kg6 74.Qg7) 69.Ke4 (69.e6 Kg6 70.Kd3 Kh6 71.e7 Kh7 72.e8Q Kh6 73.Qf8 Kg6 74.Qg7) 69...Kg6 (69...Kh7 70.Kf5 Kh8 71.e6 Kh7 72.e7 Kh6 73.e8Q Kh7 74.Qd7 Kh6 75.Qg7) 70.e6 Kh6 71.Kf5 (71.e7 Kh7 72.e8Q Kh6 73.Qf8 Kg6 74.Qg7) 71...Kh7 72.Kg5 (72.e7 Kh6 73.e8Q Kh7 74.Qd7 Kh6 75.Qg7) 72...Kg8 73.Kf5 (73.Kf6 Kf8 74.e7 Ke8 75.Ng7 Kd7 76.e8Q Kc7 77.Ne6 Kb6 78.Qb8 Kc6 79.g5 Kd5 80.Qc8 Kd6 81.Qc7 Kd5 82.Qc5) 73...Kf8+– 74.Ke5 Ke8 75.f4 (75.Kd6 Kd8 76.e7 Ke8 77.g5 Kf7 78.f4 Ke8 79.Nf6 Kf7 80.e8Q Kg7 81.Qg8) 75...Ke7 76.f5 (76.f5 Ke8 77.Kd6 Kd8 78.e7 Kc8 79.Kc6 Kb8 80.Kb6 Kc8 81.e8Q) 1–0. BeepBeepImAJeep (2610) – bam_bam_po_gubam (2510), lichess.org, 2016.

10.Ne5 Nbd7 11.Nc4 Qc7 12.a5 Bd5 13.Qc2 Bc4 14.Qc4 Bd6 15.g3 ba5 16.Qa4 Ne5 (16...Qb7!?=) 17.f4+= Ned7 18.Qa5 Qa5 19.Ra5 Bc7 20.Ra1 Bb6 21.Na3 Rad8 22.Nc4 Nd5 23.Rfc1 f6 24.Nb6 ab6 25.e4 Nc7 26.Ra7 Ne8 (26...Rc8!?+/–) 27.Bc4+– Kh8 28.e5 fe5 29.fe5 (29.Be5?! Ne5 30.fe5 Rd2+/–) 29...Rf7? (29...Rf3+–) 30.Be6 Re7 31.Bh3 1–0. Buettner,Fritz (2445) – Flores C,Ricardo (2040), CiF, 2008.

11.Nc3 Nd5 12.Nd5 ed5 13.Be2 Bf6 14.Bf6 Qf6 15.d4 c4 16.Qc2 Rfe8 17.h3 Nf8 18.Nh2 Bc8 19.Ng4 Qg6 20.Ne5 Qc2 0–1. Abdullaevich (1735) – Sergey_75 (1885), lichess.org, 2019.

11.d3 a6 12.ba6 Ba6 13.Nbd2=.

11.d3 Qc7 12.Nbd2 Bd6 (12...a6 13.Qc2=) 13.h3 (13.a5 ba5 14.Bc3 Ng4=) 13...Rad8 (13...Rfd8 14.a5=) 14.a5 Be5 (14...Ne5 15.Qe2=) 15.ab6 (15.Ne5 Ne5 16.Qe2 Bd5+=) 15...ab6 16.Ne5 Ne5 17.Qc2 (17.Qe2 Ra8=) 17...Nd5 (17...Ra8 18.Bb3+=) 18.Bd5+= Bd5 19.e4 Ba8 (19...Bb7 20.d4 Qd7 21.dc5 (21.de5?! Qd2 22.Qd2 Rd2+=) 21...Qd2 22.Qd2 Rd2 23.Be5 bc5 24.f3+=) 20.Be5 Qe5 21.Nc4 Qc7 22.Ra6 Rb8 (22...Rd4 23.Rfa1 (worse is 23.Nb6 Bb7 24.Nc4 Ba6 25.ba6 Ra8+=) 23...Bb7 24.Rb6+=) 23.Qb3 (23.Rfa1 f5+/–) 23...Kh8 (23...f5 24.ef5 Bd5 25.fe6+=) 24.Rfa1 f5 (24...Qd8+=) 25.Nb6 (25.Ra7 Bb7+/–) 25...Rb6 (better is 25...Bb7 26.Qe6 Ba6=) 26.Ra8+/– Rbb8 27.Rb8 (27.R8a7 Qe5+/–) 27...Qb8 28.b6 (28.Qc4 Qe5 29.Ra6 fe4 30.de4 Rd8+–) 28...fe4 (28...Qe5 29.Ra5 fe4 30.de4+–) 29.b7+– ed3? (better is 29...Qf4+–) 30.Ra8 d2 31.Rb8 (31.Rb8 Rb8 32.Qd3+–) 1–0. DEFFM – guestJOZ, freechess.org, 2018.

11.d3 Re8 12.Nbd2 Qc7 13.a5 Rad8 (13...ba5 14.Bc3=) 14.e4 Nf8 (14...Ng4 15.h3 Nge5 16.Qc2=) 15.Qb3 Ng6 (worse 15...ba5 16.Be5 Qd7 17.Ra5+–) 16.a6 (16.Rfe1 h6=) 16...Ba8= 17.Rfe1 Ng4 (17...h6!?=) 18.Be6!+– N4e5?? (18...fe6 19.Qe6 Double attack) 19.Ne5+– fe6 (19...Ne5 20.Be5 Qe5 21.Bf7 Kh8+–) 20.Qe6 Kh8 21.Nf7 (21.Nf7 Kg8 22.Nh6 Kh8 23.Qg8 Rg8 24.Nf7) 1–0. GuestNBFV – ncontreras, freechess.org, 2020.

11.d4 Qc7 12.Nbd2 cd4 13.Nd4 Bd5 (13...Rfd8 14.Be6 fe6 15.Ne6=) 14.Be2 (14.Bd5 Nd5 15.e4 Nb4+=) 14...Qb7 (14...Rac8 15.Rc1 Nc5 16.Bf3=) 15.Bf3 Nc5 (15...a6 16.Nc6 Rfe8 17.Bd5 ed5 18.Bd4+=) 16.Bd5 Nd5 17.Nc6 Bf6 18.Bf6 Nf6 19.Nf3 (19.Nb3 Nb3 20.Qb3 Rfc8+=) 19...Ncd7 (19...a6 20.Nfe5=) 20.Rc1 Rac8? (better 20...a6+=) 21.Ne7+– Kh8 22.Nc8 Rc8 23.Nd4 (23.Nd4 Nc5 24.Qf3 Qf3 25.Nf3+–) 1–0. BeepBeepImAJeep (2610) – Sergipe123 (2235), lichess.org, 2016.

11.d4 Rc8 12.Nbd2 cd4 13.Nd4 Nc5 14.N2b3 Qd7 15.Nc5 Rc5 16.Be2 Rfc8 17.Ba3 R5c7 18.Be7 Qe7 19.Bf3 Nd5 20.Qd2 h6 21.Rfc1 Qb4 22.Qd1 Rc1 23.Rc1 Rc1 24.Qc1 Qa4 25.h3 a5 26.ba6 Qa6 27.Be2 Qa5 28.Kf1 e5 29.Nf3 e4 30.Nd4 Nc3 31.g3 b5 32.Qb2 b4 33.Bc4 Bd5 34.Bd5 Nd5 35.Qc2 Nc3 36.Qb2 Qa4 37.Nc2 Qa6 38.Kg2 Qe2 39.Qc1 Nd1 40.Nb4 Qf2 41.Kh1 Ne3 42.Qg1 Qf3 0–1. hal1958 – hassell, playchess.de, 2002.

11.d4 Rc8 12.Be2 cd4 13.Nd4 Nd5 14.Nd2 Ne5 (14...e5 15.Nf5 Bb4 16.Bd3=+) 15.N2f3 (15.Ne6 fe6 16.Be5 Bb4+=) 15...Nf3= 16.Bf3 Bf6 (16...Bd6 17.Qe2=) 17.Rc1 Bd4 (17...Qd6 18.e4 Nb4 19.Qd2=) 18.Qd4+= Threatening mate... how? (18.ed4?! Rc1 19.Qc1 Qh4=) 18...Qf6 (better 18...Qg5!?+=) 19.Qf6+– gf6 20.Bf6! Nf6 Exploits the pin 21.Bb7 Rcd8 22.Rc7 Rd7 23.Rfc1 Rfd8 The mate threat is Rd1 24.h3 Rc7 25.Rc7 Rd7 26.Rc8 Kg7 27.Bc6 (27.Ba8 Rd1 28.Kh2 Ra1+–) 27...Rd1+– 28.Kh2 Ra1 29.g4 Ra4 30.g5 (30.Kg2 Ne4+=) 30...Nd5 (30...Ne4 31.f4+=) 31.Bd5 ed5 32.Rd8 Ra5 33.Rd5 a6 34.Rd6 (better 34.Kg2+=) 34...Rb5-/+ 35.h4 (35.f4 a5-/+) 35...a5 36.Kg3 a4 37.f4 (37.Kf3 a3 38.Rd1 Ra5–+) 37...a3 38.h5?? (better 38.Rd1-/+) 38...a2–+ 39.h6 (39.f5 Kf8 40.Rd1 Rb1 41.Rd8 Ke7–+) 39...Kf8 40.Rd8 (40.Rd1 Rb1 41.Rd8 Ke7 42.Ra8–+) 40...Ke7 41.Rd1 Rb1 42.Rd4 a1Q 43.Re4 Kd6 44.f5 Rg1 45.Kf4 (45.Kh2 Rh1 46.Kg3 Qe1 47.Kf3 Rh3 48.Kg2 Rg3 49.Kh2 Qg1) 45…Qf1 0–1. BeepBeepImAJeep (2540) – josechess1994 (2200), lichess.org, 2019.

11.d4 cd4 12.Nd4 Rc8 13.Nd2 Nc5 14.Be2 Nce4 (14...Qc7 15.Rc1=) 15.Ne4 Ne4 16.Bf3 Nd6? (better 16...Bd6=) 17.Bb7+– Nb7 18.Nc6 Qe8 19.Qf3 (19.Qg4 g6+–) 19...Nc5 20.Bd4 (20.Na7 Ra8 21.Nc6 f6+–) 20...Bd6 (20...a6 21.e4+=) 21.Rfd1 (21.Na7 Rc7 22.Nc6 f5+–) 21...Nb3 (21...a6 22.Bf6! Bh2 23.Kh2 gf6 24.Qf6+–) 22.Rab1 (22.Bg7!? Kg7 23.Rab1 Bh2 24.Kh2+–) 22...Nd4+– 23.Rd4 Bc5 24.Rd3 (worse 24.Na7 Rc7 25.Nc6 Bd4 26.ed4 Qa8=+) 24...e5 25.Rd5 (25.Na7? Rc7 26.a5 e4–+) 25...e4 (25...f6+–) 26.Qg3 (26.Qg4!?+–) 26...Qe6+= 27.Rbd1 Qg6?? (better 27...a6+=) 28.Rc5!+– Qg3 (28...bc5 29.Ne7 Theme: Double Attack) 29.hg3 (better 29.Ne7 Kh8 A) 30.hg3 Rc5 (worse 30...bc5 31.Nc8 Rc8 32.Rd6+–) 31.Kf1 Rc7–+; B) 30.Rc8 Rc8 31.hg3+–) 29...bc5+– 30.Ne7 Kh8 31.Nc8 Rc8 32.Rc1?? (better 32.Rd6+–) 32...c4=+ 33.a5 f5 (33...c3 34.b6 ab6 35.ab6=+) 34.b6 ab6 35.ab6 Rc6?? (better 35...h5=) 36.b7 (36.Rb1 Rb6 37.Rb6 g6+–) 36...Rb6 37.Rc4 Rb1 38.Kh2 Rb7 (38...g6 39.Rc8 Kg7+–) 39.Rc8 1–0. BeepBeepImAJeep (2545) – Redrosa (2285), lichess.org, 2017.

11.d4 cd4 12.Nd4 Rc8 13.Be2 (13.Nd2 Qc7=) 13...Nc5 14.Nd2 Nce4 (14...Qc7 15.Rc1=) 15.Ne4 Ne4 16.Bf3 Bf6 (16...Bd6 17.Be4 Be4 18.Qg4=) 17.Rc1 Qe7 18.Qd3 (18.Be4 Be4 19.Nc6 Rc6 20.Bf6 Rc1 21.Be7 Rd1 22.Rd1 Rc8=) 18...Nc5 19.Qd1 Bf3 (19...Rfd8 20.Bb7 Qb7 21.Qc2=) 20.Qf3 Nd3?? (better 20...Qc7=) 21.Rc8 Rc8 22.Nc6 Rc6 (22...Qf8 23.Bf6 gf6 24.Qf6+–) 23.Bf6 Qf6 (23...gf6 24.Qc6 (24.bc6?! Ne5 25.Qg3 Kh8+–) 24...Kg7 25.Qc3+–) 24.Qc6 (better 24.Qf6 Rc8 25.Qe7+–) 24...h5 25.Qa8 (25.Qa8 Kh7 26.Qa7+–) 1–0. BeepBeepImAJeep (2520) – danieljaber (2200), lichess.org, 2017.

11.d4 cd4 12.Nd4 Nd5 13.Be2 (13.Nc6 Bc6 14.bc6 N7f6+=) 13...Bf6 14.Nd2 Nc5 15.Bf3 Rc8 16.Rc1 (16.Nc4 Qc7=) 16...Qe7 (16...e5!? 17.e4 Nb4=+) 17.Ba3 Rfd8 18.Qc2 e5 (18...Nf4!=+) 19.Nf5 Qe6 20.Ng3 (20.Bg4 Bg5 A) 21.Bc5?! Rc5 (worse 21...bc5 22.Nf3+–) 22.Qb2 Qg6=; B) 21.Nf3+–) 20...h6 21.Qa2 Be7 22.Bb2 (22.Rfd1 Rd7=) 22...f5 (22...Nd3 23.Rc8 Rc8 24.Be4=) 23.Qa1 (23.e4 fe4 24.Nde4 Nd3 25.Rc8 Bc8=) 23...e4=+ 24.Be2 Bf6 (24...f4 25.ef4 Nf4 26.Bc4=+) 25.Nh5 (25.a5 Bb2 26.Qb2 f4=) 25...Bb2=+ 26.Qb2 Nd3?? (better 26...Qg6=+) 27.Qg7 1–0. BeepBeepImAJeep (2540) – Iferlan (2230), lichess.org, 2018.

11.d4 Nd5 12.dc5 Nc5 13.Qd4 Bf6 14.Qd2 Ne4 15.Qc2 Nb4 (15...Rc8 16.Na3=+) 16.Qb3= Bb2 17.Qb2 Nd5 18.Nbd2 Nc5 19.Nb3 Rc8 20.Rfd1 Qe7 21.Be2?? (21.a5 ba5 22.Na5 Nb6=) 21...Nf6?? (better 21...Nb3 22.Qb3 Nc3-+) 22.Nfd4 Nfe4 23.Bf3 f5 (23...Qf6 24.a5=) 24.a5 Kh8 25.ab6 ab6 26.Ra7 Rb8? (better 26...Ra8!? 27.Rda1 Nb3 28.Nb3 e5+=) 27.Nc5 (better 27.Be4 Ne4 28.Nc6+-) 27...Nc5+/- 28.Bb7 (28.Nc6 Qg5+/-) 28...Rb7+= 29.Nc6 Qc7 30.Rda1 Ne4?? (30...Rc8 31.Ra8+/-) 31.Qa3 (better 31.Rb7 Qb7 32.Ra7+-) 31...Rg8 32.Qa6 (32.Ra8!? h6 33.Rd1+/-) 32...Ra7+= 33.Qa7 (33.Na7 Ra8-+) 33...Qd6 (better 33...Qa7!? 34.Ra7 Nd6+=) 34.Qb6+/- Qd2 35.Rf1 Nc3? (better 35...Qb2+/-) 36.Ne5+- Ra8 37.Qe6 h6 (37...Qa2 38.Qc6 Ne2 39.Kh1+-) 38.Nf7 Kh7 39.Qf5 Kg8 40.Ne5 Rf8 (40...Qe2 41.Rc1 Qb5 42.Qe6 Kh8 43.Re1+-) 41.Qe6 Kh7 42.Ng6 (better 42.Qg6 Kg8 43.Nf3+-) 42...Ne2 (42...Rf6!? 43.Qg4 Rg6-/+) 43.Kh1= Rf2 44.Qf5?? (better 44.Nf8 Kh8 45.Ng6 Kh7 46.Nf8 Kh8 47.Ng6 Kh7=) 44...Rf5-+ 45.Nf4 Rf4 (45...Qe3 46.Rd1 Nf4 47.Ra1 Qf2 48.Rg1 Ne2 49.Rb1 Qf1 50.Rf1 Rf1) 46.ef4 Nf4 47.h3 (47.Rg1-+) 47…Qg2 0-1. Antares_Sco (1925) - rookworth (2130), Eastern Blitz Arena, 2016.

11.Be2 Nd5 12.d3 Bf6 13.Bf6 Qf6 14.Nbd2 Nc3 15.Qe1 Ne2 (15...a6 16.ba6 Ra6 17.d4=+) 16.Qe2= Ne5 (16...Rfd8 17.Rfc1=+) 17.Ne5 Qe5 18.Nc4 White prepares the advance a5 18...Qc7 19.a5 Rad8 (19...Bd5 20.Qc2=) 20.e4+= Rd4 21.Rfc1 Rfd8 22.Rc3 g6 23.f3 h5 24.ab6 ab6 25.Ra7 Qb8 (25...h4 26.Rca3+=) 26.Rca3+– Rd3?? (better 26...h4+–) 27.Rd3+– (27.Nb6?? Rd1 28.Kf2 R1d2 29.Qd2 Rd2 30.Ke3 Rd8–+) 27...Rd3 28.Rb7 (28.Qd3?! Qa7 29.Qd8 Kg7=) 28...Qb7 (28...Qd8 29.Rb8!? (29.Nb6 Qd4 30.Kf1 Rd1 31.Qd1 Qd1 32.Kf2 Qd2 33.Kf1 Qd3 34.Kf2 Qb5–+) 29...Qb8 30.Qd3+–) 29.Qd3 Qa7 30.h3 f6 (30...Kg7+–) 31.Qd8 Kf7 (31...Kh7 32.Qb6 Qa2 33.Qc7 Kh6 34.b6 Qc4 35.Kh2+–) 32.e5 fe5 (32...g5 33.Qf6 Kg8 34.Qg5 Kf8 35.Qf6 Kg8 36.Qe6 Kh7 37.Qb6 Qd7+–) 33.Qh8 Qa1 34.Kh2 Qd4 35.Ne5 Ke7 36.Nc6 (36.Nc6 Kf7 37.Nd4 cd4 38.Qd4+–) 1–0. Pierre – Stept, internet, 2019.

11.h3 h6 12.Ne5 Ne5 13.Be5 Bd6 14.Bc3 Nd5 15.Bb2 Nb4 16.Qg4 e5 17.Nc3 Bc8 18.Qh5 Be7 19.Ne4 Nd3 20.Bc3 Bb7 21.Bd3 Qd3 22.Qe5 Bf6 23.Nf6 gf6 24.Qf6 Qh7 25.f3 Rae8 26.e4 Re6 27.Qf4 Rg6 28.Kh1 f5 29.ef5 Rgf6 30.Bf6 Rf6 1–0. Abdullaevich – keeper666 (1625), lichess.org, 2018.

10.Na3 a6 11.ba6 Ba6 12.d3=.

10.Na3 Rc8 11.d4 Ne4 12.dc5 Ndc5 13.h3 f5 14.Bd4 Qe8 15.Ne5 Bf6 16.Rc1 Nd7 17.Nd7 Qd7 18.Bf6 Nf6 19.Qd4 dc4 20.Qd7 Nd7 21.Nc4 Bd5 22.Nd6 Rc1 23.Rc1 Nc5 24.a5 Rd8 25.ab6 ab6 26.Nc4 Nd7 27.Nd2 ½–½. algernon (2555) – grem (2425), net–chess.com, 2014.

10.Na3 Rc8 11.d4 Re8 12.h3 (12.Rc1 cd4 13.Nd4 Ne5 14.cd5 Rc1 15.Qc1 Qd5=) 12...Bf8 (12...cd4 13.Qd4 e5 14.Qd1+=) 13.Qb3 (13.Rc1 cd4 14.Nd4 e5=) 13...cd4+= 14.ed4 dc4 (14...Bd6 15.Ne5+=) 15.Nc4 Nd5 16.Rfc1 N7f6 17.Nce5 Ne7?? (17...Nf4 18.Bf1=) 18.Rc8 (18.Nf7 Qd5 19.Qd5 Ned5+–) 18...Qc8 (18...Nc8!? 19.Rc1 Bd5=) 19.Ng5+/– Qa8 (19...Bd5 20.Qd1+/–) 20.Ngf7 Bg2?? (better is 20...Bd5 21.Bc4 Ng6+–) 21.Qg3 (21.Qe6 h6 22.Ng5 Kh8 23.Nef7 Kg8 24.Nh6 Kh8 25.Qg8 Neg8 26.Nhf7) 21...Be4 (21...Nf5 22.Qg2 Qg2 23.Kg2 Nd5+–) 22.Nh6 (22.Nh6 Kh8 23.Nef7) 1–0. Simion,Nicolae (1895) – Baciu,Alexandru, CN Seniori, 2011.

10.Na3 d4 11.ed4 Bf3 12.Bf3 cd4? 13.Ba8+– Qa8 14.Bd4 Nc5 15.Qc2 Rd8 16.Be3 Nce4 17.d4 Qb7 18.f3 Nd6 19.c5 bc5 20.dc5 Nf5 21.Bf2 Qd5 22.Rad1 Qe5 23.Rd8 Bd8 24.c6 Bc7 25.Nc4 Qh2 0–1. poganinbezdom (1620) – lenja, kurnik, 2011.

10.Na3 Ne4 11.d3 Bf6 (11...Nef6 12.a5=) 12.Bf6 Nef6 13.Ng5 (13.d4 Rc8=) 13...Qc7 (13...e5 14.d4=) 14.cd5 ed5 (14...Bd5 15.a5=) 15.Re1 (15.Rc1 a6=) 15...Rac8 (15...Rfe8 16.Nf3=) 16.Rc1 Rfe8 17.Qb3 (17.Qc2 a6=) 17...Qe5 18.Nf3 Qf5 (18...Qe6 19.Qc3=) 19.Nh4 (19.Qc2 Qg6=) 19...Qg5 (19...Qe6 20.Nf3=) 20.Nf3 ½–½. Staberg,Karl Arne – Oestmark,Anders, corr SSKK 2–782, 1994.

10.a5 ba5 11.Bc3 dc4 (11...Qe8 12.Ba5 Qb8 13.d3=) 12.Ba5 Nb6 13.Na3 Qd5 14.Qc2 Increasing the pressure on the isolated pawn on c4 14...c3 (14...Rfc8 15.Rfc1=) 15.dc3 (15.Bc3 c4=) 15...Qd7 (15...Qe4 16.Bd3 Qg4 17.h3=) 16.Rfd1 (16.Ne5 Qc7 17.Nac4 Bd5+/–) 16...Qc8 (16...Bd6 17.Nc4 Nc4 18.Bc4+=) 17.Ne5+/– Rd8 18.Bf3 (18.Nac4 Rd1 19.Rd1 Qc7+/–) 18...Bf3+= 19.gf3 Rd1 (19...Qb7 20.c4+=) 20.Rd1 Qb7 (20...Nfd7 21.Nc6 Bf6 22.Qe4+=) 21.Nc6 (21.c4 Rd8+=) 21...c4 22.Qa2 Nfd5 (better is 22...Ba3!? 23.Qa3 Nbd7+=) 23.Nc4+– Bf6 (23...Nc4 24.Qc4 Bf8+/–) 24.Nd6 Qc7 25.Ne4 a6? (25...Bh4+–) 26.c4 ab5 27.cd5 ed5 (27...Nd5 28.Qd5 (28.Bc7?! Ra2 29.Nf6 gf6+–) 28...Qa5 29.Qd7+– (worse is 29.Na5 ed5 30.Nf6 gf6+–)) 28.Nf6 gf6 29.Bb6 Qc6 (29...Ra2?? 30.Bc7 Kg7 31.Nb4+–) 30.Qd5 (30.Qd5 Rc8 31.Qc6 Rc6 32.Bd4+–) 1–0. Mehlhorn,Uwe (2145) – Hilbert,Stephan_Joerg (1790), 22. Friedrichrodaer–Open, 2018.

10.a5 a6 11.ab6 ab5 12.cb5 (12.Ra8 Qa8 13.cb5 Qa5=) 12...Qb6 (12...Ra1 13.Ba1 Qb6 14.Nc3+=) 13.Nc3 Qc7 (13...Ra1 14.Qa1 Ra8 15.Na4-/+) 14.d4 c4 15.Qc2 Bd6 16.h3 (16.Rfb1 Ra1 17.Ra1 Qb6=) 16...Rfb8 17.Rfc1 Nb6 18.Nd2 Bc8 19.e4 Bf4 20.e5 Ne8 21.g3 Bh6 22.Rcb1 Bd7 23.Ra3 Ra3 24.Ba3 Ra8 25.Bc5 g6 (25...f6 26.ef6 Nf6 27.f4=) 26.Qb2 (26.Bf3 Ng7+=) 26...Qb7 27.Bd1 (27.f4 f6=) 27...Nc7 (27...f6 28.ef6 Nf6 29.Bf3=) 28.Nf3 Be8 29.Qb4 Bg7 30.Kg2 (30.Bb6 Qb6 31.Qd6 Qb7=) 30...Bh6 (30...f6 31.ef6 Bf6 32.Ne5=) 31.Qb2 Ra5 The pressure on the isolated pawn grows 32.Qb4 Ra8 33.Bd6 Ra7 34.Bc5 (34.Bc2 Bd7+=) 34...Ra8 35.Kf1 (35.Bb6 Qb6 36.Qd6 Qb7+=) 35...Bg7 36.Nh2 (36.Bb6 Qb6 37.Qc5 Qc5 38.dc5 Rb8+/–) 36...Bh6 (36...f6 37.Ng4 Nd7 38.ef6 Nf6 39.Ne5=) 37.Ke1 Nd7 (37...Bd7 38.Nf3=) 38.Ng4 Bg7 39.Bd6 h5 (39...f6 40.ef6 Nf6 41.Ne5=) 40.Nh2 (40.Ne3 f6 41.Bf3 Nb6=) 40...Nb6 41.g4 hg4 (41...h4 42.Be7+=) 42.Ng4+= Nd7 43.Na4 (43.b6 Na6 44.Qb2 f6+=) 43...Nb6 (43...f6 44.ef6 Nf6 45.Nc5+/–) 44.Nc3 (44.Qc5 Na4 45.Qc7 Qb6 46.Qb6 Nb6+/–) 44...Nd7 45.Ne3 Nb6 46.Nc2 (46.Be2 f6+=) 46...Nd7 (46...f6 47.ef6 Bf6 48.Bg4+=) 47.Na3 (47.b6 Na6 48.Qb2 f6+=) 47...Nb6 48.Bc5 Bh6 49.Bb6 (49.Be2!?+=) 49...Qb6= 50.Na4 (50.Nc2 Rb8+=) 50...Qb7 (50...Qd4 51.Qb2 Qb2 52.Rb2 Bc1 53.Nc4 dc4–+) 51.Nc5= Qb6 ½–½. Labahn,Wolfgang – Glettenberg,Joerg, Paderborn GER, 1989.

10.a5 a6 11.cd5 ed5 12.ab6 (12.ba6 Ba6 13.Ba6 Ra6 14.ab6 Qb6 15.Ra6 Qa6=) 12...Qb6 13.Nc3 ab5 14.Nb5 (14.Bb5? d4 15.ed4 cd4–+) 14...Ra1 15.Ba1 Ba6 (15...Bc6 16.Nc3+=) 16.Nc3 (16.Qa4 Rb8 17.Rb1 Qe6=) 16...Rb8= 17.Qc2 Be2 18.Ne2 Qb3 (18...Qe6 19.Bb2+=) 19.Qb3 (19.Qf5 g6 20.Qg5 Qc2=) 19...Rb3+= 20.Ne5 Ne5 (20...Bd6 21.Nd7 Nd7 22.Bc3+=) 21.Be5 Ne4 22.Bc3 Bf6 23.f3 Nc3 (23...Bc3 24.Nc3 Nc3 25.dc3 Rc3 26.Rd1-/+) 24.Nc3 Bc3 25.dc3 Rc3 26.Rd1 Kf8 27.Rd5 Ke7 28.Kf2 Rc2 29.Kg3 Ke6 (29...c4 30.Re5 Kd6 31.Ra5-/+) 30.e4+= c4 31.Rc5 (31.Ra5 c3+=) 31...Kd6 (31...c3 32.f4+=) 32.Rc8 (32.Rd5 Ke7=) 32...Ke5 (32...c3!?+=) 33.Rc7= Kd4 Black intends c3 (better is 33...Kf6=) 34.Rf7+– c3 35.Rd7 (35.Rg7 h5 36.Rd7 Kc4 37.e5+=) 35...Ke3 36.Rg7 h5 (36...Re2 37.Rh7 c2 38.Rc7+/–) 37.Rg5 (37.Rc7!?+/–) 37...h4 38.Kh4 Kd4? (38...Re2 39.Rc5 c2 40.Kg3+=) 39.Kg3 (better is 39.Rg8!?+–) 39...Rd2+/– 40.Rg8 c2 41.Rc8 Kd3 42.h4 (42.h4 Rd1 43.Rc2 Kc2 44.h5+/–) 1–0. Mueller – Dietze, Grd–Man, 1980.

10.a5 dc4 11.Bc4 (11.Na3=) 11...Nd5 (better 11...ba5!? 12.Be2 Bd6=+) 12.a6+/- Bc8 13.e4 (13.Nc3 N7f6 14.Ne5+/-) 13...N5f6 (better 13...Nb4!?+=) 14.Qe2+/- White prepares the advance e5 14...Re8 (14...Rb8 15.Nc3 e5 16.h3+/-) 15.Nc3+- Nf8 16.Ne5 Ng6 17.Nc6 Qc7 (17...Qd7 18.e5 Nd5 19.Qf3+-) 18.e5 Nd7? (18...Nf4 19.Qf3 N6d5 20.g3 Nc3 21.dc3+- (21.Qf4?! Nd5 22.Qe4 Bf8+=; 21.Bc3?! Nd5+/-; 21.Qc3?! Nd5 22.Qd3 Bf8+=; 21.gf4?! Nd5+/-)) 19.f4 Nb8?? (19...Ndf8+-) 20.Ne7 Qe7 (20...Ne7 21.Qe4 Nbc6+-) 21.Qe4 White prepares f5 21...f6 (21...Na6 22.Qa8 Rd8 23.Rf2+-) 22.Qa8 fe5 (22...Na6 23.ef6 Qf6 24.Nd1+-) 23.f5 Nf4 24.Qb8 Ba6 25.Qe5 Bb7 26.Rf4 (26.Rf4 Qf6 27.Be6 Re6 28.Qe6 Qe6 29.fe6 h6 30.e7 Kh7 31.e8Q Bc6 32.bc6 c4 33.Rf8 a5 34.Rh8) 1-0. DEFFM – GuestQWTR, freechess.org, 2021.

10.a5 Ne8 11.a6+/- Bc8 12.cd5 ed5 13.Nc3 Nc7 14.Qc2 Bf6 (14...Bd6!?+=) 15.d4+/- Re8 16.e4 (16.Rfd1!?+/-) 16...cd4+= 17.Nd5 Nd5 18.ed5 Nc5 (18...Ne5!? 19.Nd4 Qd5+=) 19.Nd4+/- Bd7 (better 19...Qd6!?+/-) 20.Nc6+- Bc6 21.dc6 (21.bc6?! Bb2 22.Qb2 Qd5+=) 21...Bb2 22.Qb2 Re7 23.Bc4 Qc7 (23...Re4 24.Rfd1 Qc7 25.Bd5+-) 24.Rfe1 Rae8 25.Re7 Qe7 26.Rd1 Kf8 27.Qd4 h6 (27...Ne4 28.Qd7 Nc5 29.Qd5+-) 28.Qf4 Ne6 (28...g5 29.Qd4 Kg8+-) 29.Be6 Qe6 30.h4 Qe5 (30...Kg8+-) 31.Qe5 Re5 32.c7 (32.c7 Rc5 33.Rd8 Ke7 34.c8Q Rc8 35.Rc8+-) 1-0. onur604 (2320) - tomans (2230), Casual Rapid game, lichess.org, 2021.

10.a5 h6 11.a6+= Bc8 12.d4 dc4 13.Nbd2 cd4 14.Nd4 (14.Bc4?! de3 15.fe3 Nc5=; 14.Nc4?! de3 15.fe3 Nc5=) 14...Nc5 (14...c3 15.Bc3 Nd5 16.Bb2+/-) 15.Nc6 Qe8 16.Nc4 Bd7 (16...Nd5 17.Be5+/-) 17.Bf6+- (17.Ne7?! Qe7 18.Qd6 Qd8+/-) 17...Bf6? (better 17...gf6 18.Bf3 Rb8+-) 18.Nd6 (18.Nd6 Bc6 19.Ne8 Be8 20.Rc1+-) 1-0. DEFFM – SPSPSPSPSP, freechess.org, 2021.

10.Qb3 a6 11.d3 ab5 12.ab5 Ra1 13.Ba1 dc4 14.dc4 Qc7 15.Rd1 Rd8 16.Nbd2 Ng4 17.h3 Nge5 18.Qc2 f5 19.e4 Nf3 20.Bf3 Qf4 21.ef5 Bf3 22.Nf3 ef5 23.Qe2 Qe4 24.Qe4 fe4 25.Ne5 Ne5 26.Rd8 (26.Be5?? Rd1 27.Kh2 Bd6 28.Bd6 Rd6–+) 26...Bd8 27.Be5 Kf7 28.g4 g6 29.g5 Ke6 30.Bg3 e3 31.fe3 Bg5 32.Bc7 Kf5 33.e4 Ke4 34.Bb6 Kd4 35.Ba7 (better is 35.Bc7!? Bd2 36.b6+=) 35...Kc4 36.b6 Bf4 37.b7 Kd5 38.Kf2 c4 39.b8Q Bb8 40.Bb8 c3 41.Ke3 Kc4 42.Be5 c2 43.Kd2 Kb3 (better is 43...Kd5 44.Bf4 Ke4=) 44.Kc1 h6 45.Bg7 g5 (45...h5 46.Bf6 Kc4+–) 46.Bh6 Kc3 47.Bg5 Kd3 48.h4 Ke4 49.h5 Kf5 50.Be3 Ke5 51.h6 Kf6 52.Kc2 Kg6 53.Kd3 Kh7 54.Kd4 Kg6 55.Ke5 Kh7 56.Kf6 Kh8 (56...Kg8 57.Kg6 Kf8 58.h7 Ke7 59.h8Q Kd7 60.Qd4 Kc6 61.Qc4 Kb7 62.Qb5 Kc7 63.Bf4 Kd8 64.Qd5 Ke8 65.Bg5 Kf8 66.Qf7) 57.Kg6+– Kg8 58.Bc5 Kh8 59.Bd6 Kg8 60.h7 Kh8 61.Be5 1–0. Bonetti,Shane – Grynt (2205), ICC, 2002.

10.Qb3 dc4 11.Qc4 a6 12.Na3=.

10.Qb3 dc4 11.Qc4 a6 12.ba6 Ba6 13.Qa6 Ra6 14.Ba6 Bd6 -/+.

10.Qb3 dc4=+ 11.Bc4 Bd6 (11...Qb8 12.Ne1=+) 12.Be6 Bf3 13.gf3 Ne5 (13...Qc7 14.Bd7 Qd7 15.Kg2=) 14.Be5 (14.f4!? Nf3 15.Kg2 Nh2 16.Kh2 fe6 17.Qe6 Kh8 18.Rh1+=) 14...Be5=+ 15.Ra2 (15.Ra3 Bh2 16.Kg2 Be5=+) 15...Bh2!-/+ 16.Kh2 Qd6 (< 16...fe6 17.Qe6 Kh8 18.Rg1=) 17.Kg2 fe6 18.Nc3 (18.Rh1 Nd5-/+) 18...Rad8 (18...Rac8 19.Qc2-/+) 19.Rh1=+ Qe5 (19...Rf7 20.Qc4=+) 20.Qc4 (20.Qc2 c4=+) 20...Qg5 (20...Qf5 21.a5-/+) 21.Kf1=+ Qf5 22.Ke2 (22.e4 Qe5=+) 22...Nd5 23.Qe4 Nc3 (23...Nb4 24.Raa1=+) 24.dc3= Rd6 ½–½. Gravel,Simon M – Taylor,Gordon (2340), CAN–ch Toronto, 1996.

10.Qb3 Qc7 11.Nc3= Rfd8 12.d3 (12.cd5 Nd5 13.a5 ba5 14.Nd5 Bd5=) 12...Nf8 (12...d4 13.Nb1+=) 13.Rfd1 (13.cd5 Nd5 14.a5 ba5 15.Nd5 Bd5=) 13...Ng6 (13...d4 14.Ne4=) 14.h3 (14.cd5 ed5 15.d4 c4=) 14...e5 (14...d4 15.Nb1+=) 15.cd5= Nd5 16.Rac1 Rac8 17.d4 (17.Ne4 Nb4=) 17...ed4+= 18.ed4 Nc3 (18...c4 19.Nd5 Bd5 20.Qc3+=) 19.Rc3 (19.Qc3 Nf4 20.Bc4 Bf6+=) 19...Nf4+= 20.Bc4 Bf6 21.Ne5 Can f7 get defended? 21...Be5 (21...Bd5 22.Bd5 Rd5 23.Rf3 Rd4 24.Bd4 Ne2 25.Kh1 Nd4 26.Rd4 cd4 27.Ng4-/+) 22.de5= Rd1 23.Qd1 Rd8 (worse is 23...Bg2 24.Qg4 Bh3 25.Qf4+– (25.Rh3?! Nh3 26.Qh3 Rd8+=)) 24.Qg4 Qe5 (worse is 24...Ng2 25.Rg3 g6 26.Rg2 Bg2 27.Qg2+/–) 25.Rc2 Qe1 26.Kh2 The mate threat is Qxg7 26...Ng6 27.Re2 Qb4 28.Re7 Qb2?? (28...Ne7 Exploits the pin 29.Qg7) 29.Rb7 (29.Bf7 Kf8 30.Rb7 Qe5 31.Qg3 Rd3+=) 29...Qe5 (29...Rf8 30.Qf5 Ne5 31.Bd5=) 30.g3 Ne7 (30...Rf8!?=) 31.Ra7 (31.Qf3 Kh8 32.Ra7+/–) 31...h5 (better is 31...Qf6!? 32.Kg2 g6+=) 32.Qf3+– Rf8? (better is 32...Kh7+–) 33.Qb7 (better is 33.Bf7 Rf7 34.Ra8 Kh7 35.Qf7+–) 33...Qd4= 34.Bf1 (better is 34.Kg1!? Qc4 35.Qe7+=) 34...Qf2-/+ 35.Bg2 (35.Qg2 Qf6-/+) 35...Nf5 36.Qc7?? (better is 36.Qf3 Qf3 37.Bf3+=) 36...Ne3 37.Qc6 Nf1 (37...Ng2?! 38.Qg2 Qe3 39.a5-/+; 37...Qg2?! 38.Qg2 Ng2 39.Kg2+=) 38.Kh1 Ng3 39.Kh2 Ne2 (39...Ne2 40.Qc5 bc5 41.h4 Nf4 42.Rf7 Qg2) 0–1. Knobloch,Rainer – Voelschow,Andreas, Mecklenburg VP LL2, 1996.

10.Qb3 Ne4 11.d3= dc4 12.dc4 Bf6 (12...Qc7 13.Rd1=) 13.Nc3 (13.Rd1 Qc7=) 13...Qc7 14.Ne4 Be4 15.Nd2 (15.a5 ba5 16.Nd2 Bb2 17.Qb2 Bb7=) 15...Bb7 16.Bf3 (16.Bf6 Nf6 17.a5 Rfd8=) 16...Rad8 (16...Bf3 17.Nf3 Bb2 18.Qb2=) 17.Bb7 Qb7 18.Bf6 Nf6 (worse is 18...gf6 19.Rfd1+=) 19.Nf3 Rd6 (19...Qe4 20.Rfd1=) 20.Rfd1 Rfd8 21.Ne5 (21.Rd6 Rd6 22.Rd1 Qd7 23.Rd6 Qd6=) 21...Qe4 (21...Qc7 22.Nc6 R8d7 23.Rd6 Qd6 24.a5=) 22.Nc6 Rd1 23.Rd1 Rd1 24.Qd1 Threatening mate: Qd8 24...h5 25.Qb3 (25.Na7 Qh4 26.g3 Qc4 27.Nc8+/–) 25...a6?? (better is 25...Ng4+=) 26.f3+– Qh4 The mate threat is Qe1 27.g3 Qg5 28.Qd3?? (28.ba6 Ne8 29.Kf2+–) 28...h4 (28...ab5 29.ab5 Nh7 30.f4+/–) 29.Kf2 hg3 30.hg3 Qh5 (30...Qh6 31.Kg2 ab5 32.ab5+/–) 31.Qd8 (31.Kg2 e5 32.ba6+–) 31...Kh7+= 32.Kg2 (worse is 32.Qb6 Qh2 33.Ke1 Qg3 34.Ke2 Qg2 35.Ke1 Qg3 36.Ke2 Qg2 37.Ke1 Qg3=) 32...e5 (32...ab5 33.ab5 Qg5 34.Qd3 g6 35.Qc3+=) 33.Qd3 (better is 33.ba6 e4 34.Qd1 ef3 35.Qf3+–) 33...Kh8? (better is 33...e4!? 34.fe4 Ng4+=) 34.e4 (34.ba6 e4 35.fe4 Ne8+–) 34...Qg5 (34...Qh6+–) 35.Qd6?? (better is 35.ba6 Kh7 36.f4+–) 35...Qe3+/– 36.Qd1 (36.Qe5?! Qe2 37.Kg1 ab5 38.Qb8 Kh7+=; 36.Ne5?! Qe2 37.Kh3 Qf1 38.Kh4 Qh1 39.Kg5 Qh5 40.Kf4 Qh6 41.Kf5 Qh5 42.Kf4 Qh6 43.Kf5 Qh5 44.Kf4=; 36.ba6?! Qe2 37.Kg1 Qe3 38.Kg2 Qe2 39.Kg1 Qe3 40.Kg2=) 36...Qg5?? (36...Qc3 37.ba6 Qb2 38.Kh3+–) 37.Ne7 (37.ba6 Ne8 38.Qd7 Nc7+–) 37...g6?? (37...Kh7 38.ba6 Nh5 39.a7 Qg3 40.Kf1 Qh3 41.Ke1 Qh4 42.Kd2 Qe7 43.a8Q+–) 38.Nd5 (better is 38.ba6 Ne4 39.Qd8 (39.fe4?! Qe7 40.Qd5 Kg7+=) 39...Kg7 40.fe4+–) 38...Nh5 (38...ab5 39.cb5 Nd5 40.ed5+=) 39.Qe1 (39.g4 a5 40.Kf2 Qh4 41.Ke3 Qg5 42.Ke2 Nf4 43.Nf4 Qf4 44.Qd8 Kh7 45.Qh4 Kg7 46.Qh1=) 39...Qd8? (39...ab5 40.ab5 Nf4 41.Kf1 Nd5 42.ed5+/–) 40.f4 (40.ba6 Kg8+–) 40...f6? (40...ef4 41.g4 Qg5 42.Qc3 Ng7 43.Qh3 Kg8 44.ba6 Qe5+–) 41.f5 (41.fe5!? ab5 42.g4 fe5 43.gh5 ba4+–) 41...Kg7 (41...ab5 42.Qd1 Kg8 43.fg6 (43.cb5?! Ng7+–; 43.ab5?! Ng7+–) 43...Ng3 44.Kg3+–) 42.Qd1 (42.Qd1 ab5 43.Qg4+– (worse is 43.cb5 Kh6+–)) 1–0. Zenner,Claus – Gebuhr,Guenter, corr DDR ch, 1972.

10.Qc2 a5 11.ba6 Ba6 12.Na3 Nb8 (12...dc4 13.Nc4 Nd5 14.d4=) 13.Ne5 (13.d3 Nc6=) 13...Nfd7 14.Nb5 Bb7 (14...Ne5 15.Be5 Bf6 16.Bf6 Qf6 17.Qc3=) 15.cd5 (15.Bf3 Na6=) 15...Ne5 16.Be5 Qd5 Threatening mate: Qxg2 (worse is 16...ed5 17.Bc7 Qd7 18.Bb6+/–) 17.Bf3 Qd7 18.Bb7 Qb7 19.Qc3 f6 20.Bg3 Na6 21.Rfc1 (21.Rfb1 Qd7=) 21...Rfd8 22.Qc4 (22.d4 Rac8 23.Qb3 Qd5 24.Qd5 Rd5+= (worse is 24...ed5 25.Na7+/–)) 22...Qd5 23.Qd5 (23.d4 Qc4 24.Rc4 Kf7=) 23...Rd5 24.d4 Rd7 (24...Kf7 25.Rc4=) 25.a5 (25.Rc4 Kf7=) 25...Rb7 26.Kf1 cd4 27.ab6 Rb6 28.Nd4 e5 (28...Kf7 29.Rc6 Nb4 30.Rb6 Ra1 31.Ke2=) 29.Rc6 Bd8 30.Rb6 Bb6 31.Nc6 Bc5 (31...Kf7 32.e4=) ½–½. Luzuriaga,Norberto Horacio – Cleto,Fernando, Gratuliano Bibas Memorial, 2000.

10.Qc2 dc4 11.Na3=.

10.Qc2 Qc7 11.d3 dc4 12.dc4 Be4 13.Qb3 Rfd8 14.a5 Bf8 15.Nbd2 Bg6 16.Nh4 Ne5 17.Ng6+/– hg6 18.Rfd1 g5 19.f4 (19.f4 gf4 20.ef4+/–; 19.Nf3 Rd1 20.Rd1 Nf3 21.Bf3 Rd8+/–) 1–0. lasker (2075) – Harnas (1610), internet, 2007.

10.Qc2 Qc7 11.d3 Rad8 12.Nbd2 Rfe8 (12...Bd6 13.cd5 Nd5 14.a5=) 13.Rfc1 e5 14.cd5 Nd5 15.Nc4 White plans a5 15...Bf6 16.e4 Nf4 (16...Nb4 17.Qc3=) 17.Rd1 (17.a5 Bc8=) 17...Ne2 18.Qe2 g6 (18...a6!?=) 19.a5+= Bg7 20.ab6 (20.Qe3 f5+=) 20...ab6 21.Ra7 Ra8 22.Rda1 Ra7 23.Ra7 Ra8 24.Ra8 Ba8 25.Bc3 f6?? (better 25...Bb7=) 26.Qa2+– Qb8 (26...Bb7 27.Nce5 c4 28.Nd7 Qd7 29.Qc4 Kh8+–) 27.Nce5 (27.Nce5 Kh8 28.Nd7+–) 1–0. tsodikovich (1830) – cube13 (1775), gameknot.com, 2017.

10.Qc2 Qc7 11.d3 Rfe8 12.cd5 Nd5 13.Nbd2 a6 14.Rfc1 Rec8 15.d4 Qd8 16.Bc4 cd4 17.Bd4 Nc5 18.Qb2 ½–½. Benassi,Aspasio – Campo Millan,Diego, corr or01–016, 2001.

10.Qc2 Qc7 11.cd5 Nd5 12.Rc1 Rac8 13.Na3 Bf6 14.Nc4 Nb4 15.Qb1 Bf3 16.Bf3 Bb2 17.Nb2 (worse is 17.Qb2 Nd3 18.Qc3 Nc1 19.Rc1 Nf6-/+) 17...Ne5 18.Be2 Qd6 19.d3 Rfd8 20.Rd1 Qe7 21.f4 Nd7 22.Nc4 e5 23.f5 Nf6 24.Qb2 e4 25.de4 Ne4 26.Bf3 Qh4 27.a5 ba5 28.Rd8 (28.Ra5?? Rd1 29.Bd1 Qe1) 28...Rd8 29.Qe5 Qf2 30.Kh1 Nf6 31.Qg3 Qc2 32.Qc7 Rf8 33.Qc5 ½–½. Becker,Godelind – Simon,Holger, DESC, 2006.

10.Qc2 Rc8 11.d3 Qc7 12.h3 Bd6 13.Kh1 Ne5 14.Nbd2= dc4 15.dc4 Rfd8 16.Rad1 Rd7 17.Nh4 Rcd8 18.Bf3 Bf3 19.Ndf3= h6 20.Ne5 Be5 21.Be5 Qe5=+ 22.Nf3 Qc7 23.Rd7 Rd7 24.Nd2 Qd8 25.Rd1 Rd3 26.Kh2? Ne4!–+ 27.Ne4 Rd1 28.Qb2 Qd3 29.Qe5 Qc4 30.Nd6 Qd5 31.Qf4 Qd6 32.Qd6 Rd6 33.Kg3 c4 (33...c4 34.a5 ba5–+) 0–1. OutOfBounce – mil, Live Game Caissa's Web, 2005.

10.Qc2 Rc8 11.d3 Bd6 12.Nbd2 e5 13.h3 d4 14.ed4 ed4 15.Bc1 Qc7 16.Kh1 Rfe8 17.Nh4?? Bf4 18.Bf3=+ Ne5 19.Bb7+= Qb7 20.Ndf3 Nf3 21.Nf3 Bc1 22.Qc1 Nh5 23.Qg5+= Nf6 24.Ne5 Qe7 25.Nc6 Qe2= 26.Qf5 Qd3?? 27.Qd3+– Nh5 28.Rae1 Red8 29.Nd8 Rd8 30.Re7 Rf8 31.Rfe1 Nf4 32.Qf5 Ng6 33.Re8 Nh4 34.Qc8 Ng6 35.h4! h5 36.Rf8 Nf8 37.Re8 d3 38.Rf8 Kh7 39.Qf5 g6 40.Qd3 Kg7 41.Qd8 g5 42.Rg8 Kh7 43.Qg5 f6 (43...a6 44.Qg7#) 1–0. WoW – villehartti, Live Game Caissa's Web, 2005.

10.Qc2 Re8 11.d4 Rc8 12.Nbd2 dc4 13.Bc4 Nd5 (13...Bd6 14.Rfd1=) 14.e4 Nb4 15.Qb3 Nf6 16.Be6 (better 16.Rfd1!?+=) 16...fe6=+ 17.Qe6 Kh8 18.Ng5 Do you see the mate threat? 18...Rf8 19.d5 Qe8 20.Qh3 Qh5 (20...Qg6 21.Ne6 Rg8 22.f4=+) 21.Bf6 (21.Qh5 Nh5 22.Ne6 Rfe8=+) 21...Qh3=+ 22.Bg7 The passed pawn on f2 will quickly become a dangerous weapon (22.gh3? gf6 (22...Rf6?! 23.a5–+; 22...Bf6?! 23.Ne6–+) 23.Ne6 Rg8 24.Kh1 Nd5–+) 22...Kg7 23.Nh3 (23.gh3?? Bg5 24.Nc4 Bf4–+) 23...Bf6 (23...c4 24.Rac1 c3 25.Nf3=+) 24.Rab1 Rce8 25.Rb3 Bc8 26.f4 Bd4 27.Kh1 Kh8 (27...Na2 28.Rg3 Kh8 29.f5=+) 28.f5+= Rg8 (28...a6 29.Ng5+=) 29.Nf4 Nc2 30.g3 Ne3 31.Rf3 Ng4 32.Ne6 Be6 33.fe6 Ne5 34.Rf5 c4 35.Rb1 c3?? (better 35...Be3 36.Rc1 Bd2+=) 36.Nb3+– c2 Threatening mate: cxb1Q 37.Rc1 Bb2 (37...Be3 38.Rc2 Ng4+–) 38.Rc2 Nd3 (38...Rg4 39.Rb2 Re4 40.Ra2+–) 39.Rd2 Nc5 (39...Rg4 40.Rd3 Re4 41.Rf7+–) 40.Nc5 bc5 41.Rb2 c4 (41...Re7 42.Rbf2 c4 43.Rf7 Rf7 44.ef7+–) 42.Rc2 Rc8 43.d6 Rg6 (43...Rcd8 44.d7 Rg7+–) 44.d7 Rcg8 45.e7 Rd6 (45...h5 46.e8Q Kh7 47.d8Q Re8 48.Qe8 c3 49.Qe7 Rg7 50.Rh5 Kg6 51.Rg5 Kh6 52.Qg7) 46.e8Q Rdg6 (46...Rd1 47.Kg2 Re8 48.de8Q Kg7 49.Qe7 Kg6 50.Qf6) 47.d8Q Re8 (47...h6 48.Rf8 Kh7 49.Rg8 Rg3 50.Qf7 Rg7 51.Qg7) 48.Qe8 Rg8 49.Qe5 Rg7 50.Rf8 1–0. onur604 (2320) – Jeffgabriel_NSamar (2185), lichess.org, 2020.

10.Nc3 Bb7 11.cd5 Nd5 12.Bc4 (12.Nd5 Bd5 13.Qc2 Rc8=) 12...Nc3 13.Bc3 Bf6 14.Bf6 (14.Rc1 Bc3 15.dc3 a6=) 14...Nf6 (14...Qf6 15.Be2=+) 15.Qe2 (15.d3 a6=) 15...Qc7 (15...Bf3 16.Qf3 Qd2 17.Rfd1=+) 16.Bb3 (16.Rfd1 Rfd8=) 16...Rfd8 17.Bc2 g6 (17...a6 18.ba6 Ba6 19.d3=+) 18.Rad1 Rd7 (18...e5 19.d3=) 19.Qc4 (19.d4 Nd5 20.Ne5 Rdd8=) 19...Rad8 (19...Bf3 20.gf3 Rad8 21.d3-/+) 20.Qc3 (better 20.e4=+) 20...Ne4?? (better 20...Bf3 21.gf3 Nd5-/+) 21.Be4+= Be4 22.Ne5 Rd5 23.Nc6?? (better 23.Ng4 Kf8 24.Nf6+–) 23...R8d7 (23...Rg5!? 24.f3 Bc6 25.bc6 Rgd5–+) 24.Qc4? (24.d3 Rh5 25.f4 Bc6 26.bc6 Qc6 27.a5-/+) 24…Bd3–+ (24...Bd3 25.Qc1 Bf1 26.Rf1 Rd2–+) 0–1. aravind555 – ZHORZH (1610), lichess.org, 2019.

10.Nc3 dc4 11.Rc1 a6=+.

10.Nc3 dc4!? 11.Rc1 Rc8+=.

10.Nc3 dc4 11.Bc4 Ne4 (11...Bf3 12.gf3 Ne5 13.d3+=) 12.Ne4= Be4 13.d4 (13.d3 Bb7=) 13...Bf6 14.Be2 (14.Rc1 Rc8=) 14...Re8 (14...Rc8 15.Nd2 Ba8 16.Nc4=) 15.Rc1 g6 (15...Rc8 16.Nd2 Bg6 17.Nc4 cd4 18.Bd4 Bd4 19.Qd4=) 16.Nd2+= Bb7 17.Nc4 (17.Bf3 Bf3 18.Qf3 a6+=) 17...Bd5 (17...Qe7 18.Bf3 Bf3 19.Qf3 (worse is 19.gf3 Red8-/+) 19...cd4 20.Bd4 Bd4 21.ed4+=) 18.Nd6+/– Re7 19.e4 Nf8 (19...cd4 20.ed5 d3 21.Bd3 Bb2 22.Nb7+=) 20.ed5 (20.e5 Rd7 21.dc5 bc5 22.ef6 Rd6+–) 20...Qd6?? (better is 20...ed5 21.Bf3 Qd6 22.dc5 bc5 23.Bf6 Qf6 24.Rc5 Rae8 25.Rd5 Ne6+/–) 21.dc5+– (21.dc5 bc5 22.Bf6+–) 1–0. Steiner,Peter Markus – Raub,Othmar, Baden–ch JS Eppingen, 2004.

10.Nc3 dc4 11.Bc4 Qc7 12.h3 Rad8 13.Be2 (13.d3 Bd6=) 13...h6 14.Qc2 e5 15.d3 Rfe8 16.Nd2 Nf8 17.Bf3 Ne6 18.Bb7 Qb7 19.Nce4 (19.Nc4 Nd5 20.Nd5 Qd5 21.Ne5 f6+/–) 19...Qd5 20.a5 (20.Ra3 Ne4 21.Ne4 Qd7+=) 20...Qd3 21.Qd3 Rd3 22.ab6 ab6 23.Be5 Ne4 24.Ne4 f6 25.Bh2 Rb3 26.Rfb1 Rb1 27.Rb1 Ra8 28.Nc3 c4 29.Kf1 Ra3 30.Nd5 Bc5 31.Bc7 (31.Rc1 Ra4=) 31...Nc7 (better is 31...Rd3 32.Bb6 Rd5 33.Bc5 Nc5–+) 32.Nc7= Rb3 33.Rc1 c3 34.Rc2 Bb4 35.Ke2 Ba5 36.Kd3 Rb1 37.g3 Kf7 38.h4 Rd1 39.Kc4 Rd2 40.Kb3 Ke7 41.Rd2 cd2 42.Kc2 Kd7 43.Nd5 Kd6 44.Nf4 Ke5 45.f3 g5 46.Nd3 Kd5 47.hg5 hg5 48.Nf2 Bb4 49.Ne4 Ke5 (49...Be7!?=) 50.Nd2+/– Kd5 51.Ne4 Be7 52.Kb3 f5 53.Nc3 Kc5 54.Ne2 (54.g4 fg4 55.fg4 Bf8+=) 54...Bd6 (54...Bf6 55.g4 fg4 56.fg4 Kb5 57.Ng3=) 55.g4 (better is 55.f4 gf4 56.gf4+–) 55...fg4= 56.fg4 Kb5 57.Nc3 Kc6 58.Kc4 Be7 59.e4 Bf6 60.Nd5 b5 61.Kb4 Bd4 62.Kb3 ½–½. Ebert,Lutz (1780) – Karwen,Werner, Mecklenburg VP LL2, 2006. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c5 5.c4 b6 6.e3 Bb7 7.Be2 Be7 8.0-0 0-0 9.a4 Nbd7)

10.Nc3 Ne4 11.Qc2 Nc3 12.Bc3 Bf6 13.a5 dc4 14.a6 Bf3 15.Bf3 Bc3 16.dc3 Rc8 17.Rfd1 Qe7 18.Qe4 Nf6 19.Qc4 Rcd8 20.Qb3 Rd1 21.Rd1 Rd8 22.c4 Rd1 23.Qd1 Qd7 24.Qe2 Qd6 25.g3 Nd7 26.Bg2 Ne5 27.Bf1 g6 28.f4 Nd7 29.h3 Nf6 30.Bg2 e5 31.Qc2 ef4 32.ef4 Qd4 33.Kh2 h5 34.f5 g5 35.Qc1 Nh7 36.Qe1 Kf8 37.Bc6 Nf6 38.Qe2 h4 39.gh4 Qf4 40.Kh1 gh4 41.Qd3 Nh7 (41...Nh5!? 42.Kg1 Ng3 43.Qd8 Kg7 44.f6 Qf6-/+) 42.Qd7 Qf1 43.Kh2 Qf2 44.Bg2 Qg3 45.Kh1 Qe1 46.Kh2 Qe5 47.Kh1 Qe1 ½–½. Braun,Herbert – Muench,Gerhard, Bayern–chB Wildflecken, 1993. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 c5 5.e3 Be7 6.Be2 0-0 7.0-0 Nbd7 8.c4 b6 9.a4 Bb7)

10.Nc3 Ne4 11.d4 cd4 12.Nd4 (12.Ne4 de4 13.Nd4 Qc7=) 12...Nc3+= 13.Bc3 dc4 14.Bf3 (14.Nc6 Bc6 15.bc6 Nc5+=) 14...Bf3 15.Qf3 Qc7 (15...Bd6 16.Nc6 Qc7 17.h3+=) 16.Nc6 Bf6 (better is 16...Bd6!? 17.h3 Ne5+=) 17.Bf6+= Nf6 18.Rac1 a6 19.Rc4 ab5 20.ab5 h6 (20...Ra2 21.Rd1+=) 21.g3 (21.Rd1 Ra2+=) 21...Qb7 (21...Ra2 22.Rfc1 Rb2 23.Nd4=) 22.Qf4 (22.e4 Ra2+=) 22...Rfe8 (22...Ra2 23.Rfc1+=) 23.Qd6 (23.Rd1 Ra2+=) 23...Kh8 (23...Ra2 24.Rfc1+=) 24.Rfc1 Rec8 25.Qd3 (25.e4+=) 25...Ra2 (25...Nd7 26.e4+=) 26.Rd4 (better is 26.Nd8!? Rc4 27.Qc4+/– (27.Nb7?? Rc1 28.Qf1 Rf1 29.Kf1 Rd2–+)) 26...Raa8 27.Rd1 Nd5 (27...Re8 28.e4+=) 28.e4 Nf6 29.Rd6 (29.Qf3 Qc7+=) 29...Rf8 (29...Ra4 30.e5 Nd5 31.Qb3+=) 30.Qd4 (30.Qf3 Qc7+=) 30...Kg8 31.f3 Rfe8 (31...Rfc8 32.Ne5+/–) 32.Ne5 Reb8 33.Nd7 (33.Nc4 Ra4+/–) 33...Nd7+= 34.Rd7 Qc8 ½–½. Kreuzer – Mueller, 1982.

10.Nc3 Ne4 11.cd5 ed5 12.d3 Nc3 13.Bc3 a6=.

10.d3 a6 11.ba6 Ra6 12.d4=.

10.d3 Rc8 11.Nbd2 Qc7 12.a5 Ba8 13.Qb1 Bd6 14.h3 e5 (14...Bb7!?+=) 15.cd5+/- Nd5 16.Nc4 f6 17.Nd6 Qd6 18.Nd2 Nb4 19.Nc4 Qe6 20.e4 f5 (better 20...Rc7!?+/-) 21.ab6+- ab6 22.ef5 Qf5 (22...Rf5 23.Bg4 h5 24.Bf5 Qf5 25.Ra3+-) 23.Bg4 Qg5? (23...Qg6 24.Ra8 Ra8 25.Bd7 Nd3 26.Ne5 Ne5 27.Be5 Qf7+-) 24.Ra8 Ra8 25.Bd7 Ra7 26.Ne5 Nd5 (26...Qd2+-) 27.Be6 (27.Be6 Kh8 28.Bd5+-) 1-0. DEFFM – hlinastyri, freechess.org, 2021.

10.d3 Rc8 11.Nbd2 Qc7 12.h3 Rfd8 (12...a6 13.ba6 Ba6 14.Qc2=) 13.Qc2 (13.a5 Bd6+=) 13...Nf8 (13...a5 14.ba6 Ba6 15.Rfb1=) 14.Rac1 Ng6 15.d4 (15.a5!?=) 15...cd4=+ 16.Nd4 Qd7 17.N2b3 (17.a5 ba5 18.Qa4 Bb4=) 17...Ne5 (better 17...dc4 18.Nd2 Nh4-/+) 18.f4?? (better 18.Nd2=+) 18...Nc4–+ 19.Bc4 (19.Nc6 Ne3 20.Qd3 Nf1 21.Nd8 Rc1 22.Nc1 Qd8 23.Kf1–+) 19...Rc4 (19...dc4!? 20.Nd2 Nd5 21.Nc4 Ne3 22.Ne3 Rc2 23.Ndc2–+) 20.Qb1 (20.Qd3 Rdc8–+) 20...Rdc8 (20...Ne4 21.a5–+) 21.a5 (21.Nd2 Ra4 22.Rc8 Qc8–+ (22...Bc8?! 23.Qc2 Ra5 24.Bc3=)) 21...Ne4 22.a6 Ba8 23.Qd3 Nd6 (23...Bb4!? 24.Rc2–+) 24.Nd2 Rc1 25.Rc1 Rc7 (25...Rc1 26.Bc1 f6 27.Qc2-/+) 26.Rc7-/+ Qc7 27.N2f3 (27.Ba3 Qc8-/+) 27...Nc4 (27...Ne4 28.Ne5–+) 28.Ba1 (28.Qc3 Bc5-/+) 28...Bf6 29.g4 h6 (better 29...e5 30.fe5 Be5–+) 30.h4?? White intends g5 (better 30.Ne6!? Qe7 31.Bf6 Qe6 32.Bc3=) 30...Qd6 (better 30...e5!? 31.fe5 Ne5 32.Ne5 Qe5 33.Kf1–+) 31.Bc3 (31.g5 Be7-/+) 31...Be7 32.g5 h5 (32...Qa3 33.g6 Qc1 34.Kf2-/+) 33.Nd2 (33.g6 Qa3 34.gf7 Kf7 35.Qh7 Qc3 36.Qh5 Kf6 37.Qg5 Kf7 38.Qh5 g6 39.Qh7 Kf6 40.Qh8 Kf7 41.Qh7 Kf8 42.Qh8 Kf7 43.Qh7=) 33...Nd2 (33...Qc5 34.g6 Nd2 35.Bd2-/+) 34.Qd2 g6 (34...Qc5 35.Qd3-/+) 35.Nc2 d4 (better 35...Qc5-/+) 36.Bd4?? (36.Nd4 e5 37.Nc6 Bc6 38.Qd6 (worse 38.bc6 Qc6 39.Be5 Qc4=) 38...Bd6 39.bc6 ef4 40.Bb4+–) 36...Qd5–+ 37.Qh2 (37.Bc3 Qh1 (37...Qb5?! 38.Qd4 e5 39.Qe5 Qe5 40.Be5=+) 38.Kf2 Qh4 39.Ke2 Qg4 40.Ke1 Qg1 41.Ke2 Qg2 42.Ke1 Qh1 43.Kf2 Qf3 44.Ke1 h4=+) 37...Qb5 38.Qd2 (38.Ne1 Qa6 39.f5 Qa5–+) 38...Qa6 39.Qc3 (39.Ne1 Qb7 40.Qh2 Qe4–+) 39...Qb7 (better 39...Be4!? 40.Ne1 Qe2 41.f5–+) 40.Ne1 Qc6 (better 40...Qh1!? 41.Kf2–+) 41.Qc6 Bc6 42.Kf2 Bb4 43.Nc2 Bd6 44.Ke2 (44.Ne1 Be4 45.Nf3 Bf3 46.Kf3 Kf8–+) 44...Be4 45.Kd2 (45.Na1–+) 45...Bc2 46.Kc2 Kf8 47.Kc3 Bc7 48.Kb4 (48.Kc4 a6–+) 48...a6 49.Bc3 Ke7 50.Kc4 Kd7 51.Bd2 Kc6 52.e4 (52.Kd3–+) 52...b5 53.Kb3 a5 54.Be3 (54.Kc2 a4 55.Kb2 Bb6–+) 54...Bb6 (better 54...a4 55.Kb4 Bb6–+) 55.Bb6 (55.Bc1–+) 55...Kb6 56.Kc3 Kc5 Black plans b4 57.Kd3 a4 58.e5 b4 59.Kc2 (59.f5 ef5 60.Kc2 Kc4 61.Kd2 a3 62.e6 fe6 63.Ke3 a2 64.Kf4 a1Q 65.Kf3 b3 66.Kf4 b2 67.Ke5 b1Q 68.Kd6 Qb6 69.Ke7 Qg7 70.Ke8 Qb8) 59...Kd4 60.Kd2 (60.f5 ef5 61.Kb2 a3 62.Ka2 Kc3 63.e6 fe6 64.Kb1 b3 65.Kc1 a2 66.Kd1 b2 67.Ke2 b1Q 68.Kf2 Qe4 69.Kg3 a1Q 70.Kh3 f4 71.Kh2 Qah1) 60...a3 61.Kc2 (61.Kc1 b3 62.f5 Kc3 63.Kd1 Kd3 64.Ke1 Ke3 65.fg6 a2 66.Kf1 b2 67.Kg2 a1Q 68.Kh3 b1Q 69.Kg3 Qf1 70.gf7 Qe5) 61…Ke4 (61...Ke4 62.Kb3 Kd5 63.Ka2 Kc4 64.f5 ef5 65.Kb1 b3 66.Kc1 Kc3 67.e6 b2 68.Kd1 a2 69.Ke2 a1Q 70.ef7 b1Q 71.Kf3 Qf1 72.Kg3 Kc4 73.f8Q Qe5; 61...Kc4 62.Kd2 b3 63.f5 a2 64.fg6 b2 65.Ke3 b1Q 66.Kf2 Qf5 67.Kg3 a1Q 68.Kh2 Qaf1 69.gf7 Qe5) 0–1. retiponziani (1945) – jhms7 (1985), ChessWorld.net, 2015.

10.d3 Rc8 11.Nbd2 Bd6 12.Qb3 Qe7 13.a5 dc4 14.Nc4 Bb8 15.Rfd1 Bd5 16.ab6 ab6 17.Qc2 h6 18.Ra6 Bb7 19.Ra4 Ng4 (19...e5 20.Rda1+=) 20.h3 (20.Nb6!? Nb6 21.Rg4+/-) 20...Ngf6+= 21.Rda1 Nd5 22.Nfe5?? (better 22.Nfd2+=) 22...Ne5-/+ 23.Be5 Nb4 (better 23...Qg5 24.Bg3 Bg3 25.fg3 Qg3-/+) 24.Qc3 Nd5 25.Qb2 f6 26.Bb8 Rb8 27.Bf3 Qd7 (27...Nc7!? 28.Bb7 Rb7+=) 28.Ra7+/- Nb4 29.Bb7 (29.d4!? Nd5 30.dc5 bc5 31.Rd1+/-) 29...Rb7+= 30.Nb6 Qc7 31.Rb7 Qb7 32.Nc4 Nd3 33.Qb3 White plans b6 33...Nb4 34.b6 Rd8 35.Rc1 Rd3 36.Qa4 Qc6 (36...Rd8!?+=) 37.Qc6+/- Nc6 38.Rb1 (better 38.Nb2!? Rb3 39.Na4+-) 38...Rc3+= 39.Nd6 c4 (better 39...Kf8+/-) 40.Ne4?? (40.b7 Rb3 41.Ra1+=) 40...Nb8?? (40...Rb3 41.Nd2 Rb1 42.Nb1=) 41.b7 (better 41.Nc3 Kf7 42.Rb4+-) 41...Rc2?? (41...Rb3 42.Nd2 Rb1 43.Nb1+=) 42.Nc5 (better 42.Rd1 Kh7 43.Rd8+-) 42...c3 (42...Kf7 43.Rd1 c3 44.Rd8 Rc1 45.Kh2+-) 43.Ne4 (better 43.Na4!?+/-) 43...f5 44.Nc5 Rd2 45.Rc1 (45.Ne6?? c2 46.Rc1 Rd1 47.Kh2 Rc1-+) 45...c2 46.Kh2 Rd1?? (better 46...Kf7=) 47.Rc2+- Rd5?? (47...Kf7+-) 48.Ne6 Kf7 49.Rc8 Nc6 (49...Ke6 50.Rb8 Rb5 51.Re8 Kf6+-) 50.Rb8 (better 50.Rc7 Kg8 51.Nd4+-) 50...Nb8-+ 51.Nd8 (51.Nd4-+) 51…Rd8 0-1. Bostonbliz (2185) - almasssss (2205), Rated Bullet game, lichess.org, 2019.

10.d3 Re8 11.Nc3 Bf8 (11...a6 12.Qc2=) 12.d4 (12.a5 ba5 13.Qa4 d4=) 12...dc4 13.Bc4 Rc8 14.Ba2 (14.Rc1 Bf3 15.gf3 Qe7+=) 14...Nd5 (14...Bd6!?+=) 15.Nd5+= Bd5 16.Bd5 ed5 17.dc5 Nc5 18.Rc1 Qd6 (18...a6 19.Bc3=) 19.Qc2 (19.Re1 Be7=) 19...Rcd8 (19...Qe6!?=) 20.Rfd1+= Qh6 21.Ne5 (21.Bd4 Qh5+=) 21...Bd6 22.Ng4 (better is 22.Rd5!? Qe6 23.e4+=) 22...Qe6 23.h3 h5 (23...f5!? 24.Nh2 f4+=) 24.Nh2= Ne4 (24...d4 25.ed4 Nb3 26.Rb1 Nd4 27.Rd4 Bh2 28.Kh2 Rd4 29.Bd4 Qd6 30.Kg1 Qd4 31.Rd1=) 25.Nf3+= Re7? (better is 25...Bc5 26.Nd4 Bd4 27.Bd4 Rc8+=) 26.Nd4+– (26.Nd4 Qg6 27.Nc6+–) 1–0. Bonetti,Shane – artique (1970), ICC, 2002.

10.d3 Re8 11.Nbd2 Nf8 (11...Bd6 12.a5=) 12.a5 White gets the initiative 12...ba5 13.Nb3 dc4 14.dc4 Qd1 (14...a6 15.Ra5 ab5 16.Bf6 Bf6 17.Qd8 Red8 18.Rb5+=) 15.Rfd1+– Red8 (15...Be4!? 16.Na5 a6+–) 16.Na5 (16.Rd8 Rd8 17.Na5 Bf3 18.Bf3 Rd2+–) 16...Rd1 17.Rd1 Be4 18.Nd2 Bc2 19.Rc1 Bf5 (19...Bg6 20.Nc6 Bd6 21.Bf3+–) 20.Nc6 Bd6 21.Bf3 Kh8 22.e4 (22.e4 Bf4 23.ef5 Bd2 24.Ra1+–) 1–0. onur604 (2320) – irenminsk (2200), lichess.org, 2020.

10.d3 Re8 11.h3 Nf8 12.Nh2 Qc7 13.Nd2 Rad8 14.Ng4 Ng4 15.Bg4 Ng6 16.Nf3 dc4 17.Qc1 cd3 18.Rd1 c4 19.Ne1 Qc8 20.Qc3 Bf6 21.Qc1 c3 22.Nd3 cb2 23.Nb2 Qc1 24.Rdc1 Bb2 25.Rab1 Bc1 26.Rc1 Bd5 27.Rc7 Ra8 0–1. Abdullaevich (1610) – lugarbe (1730), lichess.org, 2017.

10.d4 a5 11.ba6 Ba6 12.Na3 Ne4 13.cd5 (13.Nb5 Bb7=) 13...Be2+= 14.Qe2 ed5 (worse is 14...Ra4 15.Qc2 Ra3 16.Ra3 (worse is 16.Qe4 Nf6 17.Qc2 Ra1 18.Ra1 Qd5+=) 16...ed5 17.Ra7+/–) 15.Nb5 c4 16.Nd2 Ndf6 17.Ne4 Ne4 (worse is 17...de4 18.Qc4 Rc8 19.Qb3+/–) 18.f3 Nf6 19.e4 de4 (better is 19...Re8!?=) 20.fe4+= Qd7 21.Kh1 (21.e5 Nd5+=) 21...Qg4 22.Qg4 Ng4 23.Nc7 Rac8 (23...Ra7 24.Nd5 Bd8 25.h3=) 24.Nd5 Bd8 25.e5 h5 (25...Ra8 26.h3 Ra5 27.Nb4+/–) 26.h3 Nh6 27.Rac1 Bg5 (27...g6!?+/–) 28.Rc2+– Rc6 29.Nb4 (29.Bc1 Rd8 30.Nb4 Rg6 31.Rc4 Bc1 32.Rfc1 Nf5+–) 29...Rc7 30.d5 (30.Bc1 Bc1 31.Rfc1 Ra7+–) 30...Ra8+/– 31.d6 Rd7? (31...Rcc8 32.Bc1 Bc1 33.Rfc1 Ra4 34.Rc4 Rc4 35.Rc4 Ra1 36.Kh2 Rd1+–) 32.Nd5+– (32.Rc4?! Ra4 33.Rc8 Kh7+–) 32...Bd8 33.Rc4 Ra5 34.Nc7 Rc5 (34...f6 35.Bc3 fe5 36.Ba5 ba5 37.Ne6+–) 35.Rc5 bc5 36.Nb5 g6 37.Rc1 Nf5 38.g4 (38.Rc5?! Ng3 39.Kh2 Nf1 40.Kg1 Bb6 41.Kf1 Bc5+–) 38...hg4 39.hg4 Ng3 40.Kg2 Ne4 41.Rc2 (41.Rc4!? f5 42.e6 Rh7+–) 41...Bb6 42.Kf3 (42.Bc1 f5 43.e6 Rd8+–) 42...Ng5 43.Kf4 Ne6 44.Ke4 Kf8 45.Kd5 Ke8 (45...Rb7 46.Bc3+–) 46.Rh2 (46.Kc6 Ba5 47.Bc3 Nd8 48.Kc5 Bc3 49.Nc7 Rc7 50.dc7 Ne6 51.Kc6 Nc7 52.Rc3 Kd8+–) 46...Kf8 (46...Rb7+–) 47.Kc6 1–0. Nikolic,Jovane (1795) – Cerqueira,Janderson Lourenco (1635), 8th IRT ECP – Siegmund Gansl, 2016.

10.d4 a5 11.Nc3 dc4 12.Bc4 Rc8 13.Ng5 cd4 14.Be6?? dc3–+ 15.Nf7 Rf7 16.Bf7 Kf7 17.Ba3 Bb4 18.Bb4 ab4 19.Qb3 Kf8 20.Qb4 Kg8 21.Rac1 Nd5 22.Qb3 Kh8 23.e4 Qg5 24.h4 Qg4 25.ed5-/+ Rc4 26.f3 Qh4 27.Rc3-/+ Nc5?? 28.Qc4+– Qc4 29.Rc4 Bd5 30.Rd4 (30.Rd4 Bg8 31.Rd6+–; 30.Rc5 bc5 31.Rd1 Kg8 32.Rd5 Kf7+–) 1–0. stoker – distaff, Live Game Caissa's Web, 2006.

10.d4 a5 11.Nbd2 dc4 (11...cd4 12.Bd4 Qb8 13.cd5 Bd5 14.Bc4=) 12.dc5 (12.Nc4 Bd5=) 12...Nc5 13.Nc4 Nd5 (13...Bd5 14.Qc2=) 14.Ne1 (14.Bd4 Rc8=) 14...Rc8 (14...Bf6 15.Rc1 Bb2 16.Nb2+=) 15.Nd3 Nd3 (15...Ne4 16.Rc1=) 16.Bd3 Nf6 (16...f5=) 17.Bd4 (17.Qe2 Bc5+=) 17...Bc5 (17...Qd5!? 18.f3 Rc4 19.Bc4 Qc4 20.Bb6 Nd5-/+) 18.Bc5= Rc5 (worse is 18...bc5 19.Qd2+/–) 19.Be2 (19.Qe2 e5=) 19...Rd5 (19...Qc7 20.Nd2+=) 20.Qc2 (20.Qb3 Qc7=) 20...Rg5 (20...Qc7 21.Rac1+=) 21.f3= Qc7 22.e4 (22.Rac1 Rc5 23.e4 Bd5=) 22...Rh5 (22...Nh5 23.Rac1=) 23.g3 Rc5 24.Rad1 Bd5 25.Rd4 Bc4 26.Rc4 (26.Bc4?? e5 27.Rd3 Rc4–+) 26...Nd7 27.Rc5 (27.f4 Rc4 28.Bc4 Rc8=) 27...Qc5 (27...Nc5 28.f4+=) 28.Qc5 Nc5 29.Bd1 e5 30.Bc2 Rd8 (30...Rc8 31.Rd1=) 31.Rd1 Threatening mate: Rxd8 31...Rd5?? (better is 31...Rd4=) 32.Rd5+– (32.Rd5 Ne6 33.Rd6+–) 1–0. Rosner,Dirk – Pausch, corr DDR–I–720, 1985.

10.d4 a6 11.Nbd2 ab5 12.ab5 Ra1 13.Ba1 Qa8 (13...Qc7 14.cd5 ed5 15.dc5 bc5 16.Qc2=) 14.Qb3 dc4 15.Bc4 Bd5 16.Bb2 Qb7 17.Ra1 Ra8 18.Ra6 cd4 19.Bd5 Nd5 20.Qa4 Rc8? (20...Nc7 21.Ra8 Na8 (worse 21...Qa8 22.Qd4 Nf6 23.Qb6+–) 22.Nd4 Nc5+=) 21.Ra7+– Nc5 22.Qa1 (worse 22.Rb7 Na4 23.Bd4 Rc1 24.Nf1 f6=+) 22...Qb8 23.e4 Rc7?? (better 23...Nc3 24.Nd4 N5a4 25.Ra4 Na4 26.Qa4 Qf4+–) 24.Ra8 (24.Ra8 Rc8 25.Rb8 Rb8 26.ed5+–) 1–0. Pierre – Mannaher, internet, 2020.

10.d4 Bb7 11.Nbd2 dc4 12.Bc4 Ne4 13.Ne4 Be4 14.Rc1 Bf6 15.Nd2 Bb7 16.Ba3 Re8 17.dc5 Nc5 18.a5 Ne4 19.Ne4 Be4 20.f3 Bg6 21.a6 Qb8 22.Bd6 Qd8 23.Qd2 Rc8 24.Rfd1 Be7 25.Be7 Qe7 26.Qd7 Qa3 27.Qa7 Qe3 28.Kh1 Bh5 29.Qb7 Red8 30.Rd8 Rd8 31.Rg1 h6 32.a7 Qa3 33.Qb6 Ra8 34.Qb8 Kh7 35.Qa8 Qc5 36.Bd3 (Black forfeits on time, 1–0). Bonetti,Shane – guest203, ICC, 2002.

10.d4 Bd6 11.Nbd2 Qc7 12.h3 Rfe8 13.Qb1 (13.dc5 bc5 14.Qc2 e5=) 13...a5 (13...cd4 14.Nd4 e5 15.N4f3=) 14.ba6 (14.cd5 ed5 (< 14...Bd5 15.e4+/–) 15.dc5 bc5= (< 15...Qc5 16.Rc1 Qb4 17.Qc2+/–; < 15...Nc5 16.Bf6 gf6 17.Qf5+/–)) 14...Ba6 15.Rc1 Ra7 (15...Reb8=) 16.a5 (16.Bd3!?=) 16...ba5-/+ 17.Qa2 (17.Bc3 Bc4 18.Bc4 dc4 19.Nc4 a4=+) 17...Bb7=+ 18.dc5 Bc5 (18...Qc5?? 19.Bd4+–) 19.Nd4 (19.Nb3 a4 20.Nc5 Nc5 (20...Qc5? 21.Bd4 Qa5 22.Ba7 Qa7 23.Qa4 Qa4 24.Ra4+–) 21.cd5 Bd5=+ (21...Nd5? 22.Bd4+–)) 19...dc4-/+ 20.Bc4 Ne5?? (better is 20...a4!?-/+) 21.Bf1?? (better is 21.Nb5 Qb8 22.Na7 Ba7 23.Qa5+–) 21...Qb6+= 22.N2b3 (22.Nb5!? Bd5 23.Qa4 Be3 24.Be5 (24.fe3 Qe3 25.Kh2 Rd7+=) 24...Bf2 25.Kh2+/–) 22...Ned7= 23.Nc5 Nc5 24.Ba3 Ncd7 25.Rab1 (25.Nb5 Bd5 26.Qe2 Raa8+/–) 25...Bd5 (25...Qd8 26.Nb5 Bd5=) 26.Qa1= (< 26.Rb6 Ba2 27.Rd6 Ne4=+) 26...Qd8 27.Nb5 Rb7 28.Nd6 Rb1 29.Qb1 Rf8 30.Nb7 (better is 30.Nb5!?+/–) 30...Bb7=+ 31.Bf8? (better is 31.Qb7 Qa8 32.Qc7=) 31…Be4–+ (32.Be7 Qe7–+) 0–1. Pietrzak,A – Wolny,J, corr Poland, 1987.

10.d4 Re8 11.Nbd2 Rc8 12.Rc1 Ne4 (12...cd4 13.Nd4 e5 14.N4f3=) 13.cd5 ed5 14.dc5 Ndc5 15.Nd4 (15.Rc2 Bd6=) 15...Bf6 (15...Nd2 16.Qd2 Na4 17.Rc8 Qc8 18.Ra1 Nb2 19.Qb2=) 16.Ne4 (16.Rc2 Rc7=) 16...de4 17.Ba3 Qd5 18.Bc4 Qg5 19.Nc6 (19.Bc5 Rc5 (19...Qc5? 20.Bf7 Kf7 21.Rc5 Rc5 22.Qg4+–; 19...bc5?! 20.Nc6=) 20.Nc6 Bc6 21.bc6 Rd8= (21...Rc6?? 22.Qd7 Rf8 23.Qc6+–)) 19...Bc6 20.bc6 (20.Bc5 Red8 (20...Qc5? 21.Bf7 Kf7 22.Rc5 bc5 23.bc6+–) 21.Bd4 Bd4=+) 20...Rc6 (20...Red8 21.Qc2 Nd3 22.Rcd1=+) 21.Bb5 (better 21.Bc5 Rc5 22.Qd7=) 21...Rec8?? (21...Rd8 22.Bc6 Rd1 23.Rcd1 Ne6=) 22.Bc6+– Rc6 23.Bc5 Rc5 24.Rc5 (24.Qd7 g6+–) 24...Qc5 25.Qb1 (25.Qd7 g6 26.Qa7 Kg7+–) 25...Qd5+– 26.Rd1 Qb7 (26...Qe6 27.Qb5+–) 27.Rc1 g6 28.Rc4 Qd5 29.Re4 Kg7 30.g3 a6 (30...Be5 31.Qc2+–) 31.Rb4 White launches an attack 31...Bd8 32.Rd4 Qa8 33.Rd7 Qc8 34.Qd3 (34.Ra7 h6+–) 34...Bf6 35.Qd5 Threatening mate: Qxf7 35...Qe8 36.Rb7 b5 37.ab5 ab5 38.Qb5 Do you see the mate threat? 38...Qe6 39.Qd7 Threatening mate... how? 39...Qd7 40.Rd7 Be5 (40...Bb2 41.h3+–) 41.Rd5 Bf6 42.f4 h5 43.Kg2 Be7 44.Kf3 Ba3 (44...f5 45.e4 fe4 46.Ke4+–) 45.e4 White intends f5 45...Bb2 (45...Kf6 46.e5 Ke6 47.Ra5+–) 46.h3 (46.e5 Kf8+–) 46...Bf6 (46...Kf6 47.e5 Ke6 48.Rd6 Ke7 49.Ke4+–) 47.g4 White prepares the advance f5 47...Be7 (47...hg4 48.hg4 Bb2 49.e5+–) 48.g5 (48.gh5 Kf8+–) 48...Bf8 (48...Kf8 49.Rb5+–) 49.f5 Ba3 (49...gf5 50.ef5 Bb4 51.Rd4+–) 50.f6 Kh7 51.Rd7 Kg8 52.e5 Bf8 (52...h4+–) 53.Ke4 Ba3 54.e6 Bf8 (54...fe6 55.Rg7 Kh8+–) 55.e7 Kh7 (55...Be7 56.fe7 f5 57.gf6 Kf7 58.Rd8 Ke6 59.e8Q Kf6 60.Qf8 Ke6 61.Rd6) 56.ef8Q h4 57.Qg7 (57.Rf7) 1–0. BeepBeepImAJeep (2635) – jonkristinn (2495), lichess.org, 2016.

10.d4 Re8 11.Nbd2 h6 12.h3 cd4 13.Nd4 dc4 14.Bc4 Rc8 15.Be2 Nc5 16.Bf3 Nfe4 17.Ne4 Be4 18.Be4 Ne4 19.Nc6 Qc7 20.Qg4 Bf6 21.Bf6 Nf6 22.Qe2 Nd5 23.Rac1 Qd7 24.Qd2 Qb7 25.Ne5 Rc1 26.Rc1 Rd8 27.e4 Qb8 28.Nc6 Qf4 29.Qf4 Nf4 30.Nd8 Ne2 31.Kf1 Nc1 32.Nc6 Nb3 33.Na7 Nc5 34.f3 ½–½. hal1958 – One_I, playchess.de, 2002.

10.cd5 ed5 11.Nc3 Re8 12.d4 Nf8 13.a5 c4 14.a6 Bc8 15.Ne5 Bd6 16.f4 Ne6 17.Bf3+/– Bc7 18.Nc6 Qd6 19.Ba3 Qd7 20.Nb4 Nf8 21.Ncd5 Nd5 22.Bd5 Rb8 23.e4 Qd8 24.Nc6 Qd7 25.f5 Qd6 26.Bd6 (26.Bd6 Bd6 27.Qh5+–; 26.Nb8?! Qh2 27.Kf2 Qg3 28.Ke2 Qg2 29.Rf2 Re4 30.Be4 Qe4 31.Kf1 Qh1 32.Ke2 Qe4 33.Kf1 Qh1 34.Ke2 Qe4=) 1–0. pcmvr (2110) – kostaspetidis (2105), net–chess.com, 2006.

10.cd5 ed5 11.d4 Re8 12.Nc3 Bd6 13.Qd3 Ne4 14.Rfd1 (14.dc5 Ndc5 15.Qc2 (15.Qd1 Rc8 16.Rc1 Qd7 17.Nd4 Nf6 18.Nc6 a6 19.Bf3 Nce4) 15...Rc8= 16.g3 Nc3 17.Qc3 f6 18.Nd4 Qd7 19.a5 Ne4; 14.g3 Rc8 (14...h6 15.Nd2 c4 16.Qc2 Nd2 17.Qd2 Nf6 18.Ba3 Bc8 19.Bd6 Qd6; 14...c4 15.Qc2 f5 16.Ba3 Ba3 17.Ra3 a5 18.Raa1 Qc7 19.Nd2 Ndf6; 14...g6 15.dc5 Ndc5 16.Qd1 Nc3 17.Bc3 Ne4 18.Bd4 Rc8 19.Qb3 Re7; 14...Re6 15.dc5 Ndc5 16.Qd1 Rh6 17.Rc1 Rc8 18.Nd5 Bg3 19.fg3 Qd5) 15.Rfc1 c4 16.Qc2 f5 17.Ba3 Ndf6 18.Bd6 Qd6 19.Ne5 Nc3; 14.Qc2 Rc8 (14...Re6 15.g3 Rc8 16.Rad1 Qe8 17.dc5 Rc5 18.Rc1 Ne5 19.Qd1 Nc4) 15.Rac1 Ndf6 16.dc5 bc5 17.Ne4 Ne4 18.Nd2 d4 19.Nc4 Bc7; 14.Nd2 Rc8 (14...c4 15.Qc2 Nd2 16.Qd2 Nf6 17.Ba3 Bc8 18.Bd6 Qd6 19.a5 Bg4; 14...f5 15.Nde4 fe4 16.Qd1 Qg5 17.g3 c4 18.a5 ba5 19.Ra5 Bc7) 15.Rad1 c4 16.Qc2 Nc3 17.Bc3 Nf6 18.Ra1 g6 19.a5 Rb8; 14.h3 h6 (14...Re6 15.Nd2 c4 16.Qc2 Nd2 17.Qd2 Rg6 18.Ba3 Ba3 19.Ra3 Nf6; 14...Rc8 15.Qd1 c4 16.Qc2 f5 17.Nd2 Nc3 18.Qc3 Nf6 19.a5 Qd7; 14...Qc7 15.Qc2 Rac8 16.Ne4 de4 17.Nh4 g6 18.Rfd1 c4 19.Ba3 c3) 15.Nd2 c4 16.Qc2 Nc3 17.Bc3 Nf6 18.a5 Qd7 19.Rfb1 ba5) 14...Rc8 (14...c4 15.Qc2= f5 16.Ba3 Ba3 17.Ra3 a6 18.Rda1 Qe7 19.R3a2 a5) 15.Rac1 (15.dc5 Ndc5 16.Qc2 Ne6= (16...f6 17.Rac1 Nc3 18.Bc3 Ne4 19.Qb3 Nc3) 17.Qb3 Nc3 18.Bc3 Nc5 19.Qb2 f6; 15.g3 Qf6 16.dc5 Bc5 17.Ne4 Qb2 18.Neg5 g6 19.Rab1 Qg7) 15...Ndf6 (15...c4 16.Qc2 f5 17.g3 Qe7 18.Ra1 Bb4 19.Na2 Ba3) 16.Qb1 (16.dc5 bc5 17.g3 Qd7 18.Ne4 Ne4 19.Nd2 Ng5) 16...Qe7 (16...c4 17.Ne5+= Nc3 18.Bc3 Ne4 19.Bg4 Rc7) 17.Ne4= Ne4 (worse is 17...Qe4 18.Bd3 Qe7 19.dc5 bc5 20.Bf6 Qf6 21.Bh7 Kf8 22.Bf5+=) 18.dc5 bc5 19.Bd3 (19.Qd3 c4-/+ (19...f5+=); 19.Qc2 h6) 19...f5 (19...c4 20.Be4 de4 21.Nd2+=) 20.Ba3 (20.a5 c4 21.a6 Ba8+=) 20...f4+= 21.ef4 Bf4 22.Rc2 Qf7 23.Bc1 c4 24.Bf4 Qf4 25.Be4 Re4 26.Qa1 Qd6 27.Nd4 Rce8 28.h3 Qf6 29.Qc3 Qe5 (29...a6 30.Rb2=) 30.Rcc1 h6 (30...Qf4 31.Re1=) 31.a5 Rf8 32.Nf3 (32.a6 Ba8=) 32...Qe8 (32...Qc3 33.Rc3 Re2 34.Re3=) 33.Rb1 Ref4 34.b6 a6 35.Rb2 Qg6 36.Nd4 Re8 37.Re2 Re2 38.Ne2 Re4 39.Nd4 Qf6 40.Qd2 Qe7 41.Qc3 Qf6 42.Qd2 Qe7 43.Qc3 ½–½. Kural,A Serhat (2000) – Ivkovic,Milan (2170), Champions League, 2007.

10.cd5 ed5 11.h3 Rc8 12.Nc3 Bd6 13.a5 Bb8 14.d4 Re8 15.ab6 ab6 16.Bd3 Ne4 17.Qc2 cd4 18.Nd4 Ndf6 19.Nf3 Qd6 20.Rfc1 Ng5 21.Ng5 Qh2 22.Kf1 d4 23.Qb3 Qg2 24.Ke2 Qg5 25.Nd1 Qh5 26.Kd2 de3 27.Ne3 Qf3 28.Rf1 Rcd8 29.Bf6 Qf6 30.Rfe1 Be4 0–1. Abdullaevich (1640) – arturo35 (1895), lichess.org, 2018.

10.cd5 Bd5 11.d3 Rc8 12.Nfd2 Bb7 13.Nc4 Nd5. pcmvr (2225) – guerino (2100), net–chess.com, 2006.

10.cd5 Nd5 11.Na3 Bf6 12.d4 cd4 13.Nd4 Rc8 14.Nc4 White prepares the advance a5 14...Nc5 15.a5 h6 16.ab6 ab6 17.Ra7 Ra8 18.Ra8 Qa8 19.Qd2 Ne4 (19...Rd8 20.Ra1 Qb8 21.Qc2=) 20.Qc2+= Nc5 21.Rc1 Qd8 (better 21...Rd8!?+=) 22.Nc6+– Bc6 23.Bf6 (23.bc6?! Bb2 24.Qb2 Qc7+=) 23...Qf6 24.bc6 Rc8 (24...Qg5 25.f4 Qd8 26.Nb6 Qb6 27.Qc5 Qc5 28.Rc5+–) 25.Nb6! Rc6 (25...Nb6 26.Qc5 Discovered attack (26.Qc5 Remove defender)) 26.Nd7! Nd7 (26...Qe7 27.Nc5 Nb4 28.Qc4+–) 27.Qc6 Ne5 28.Qe8 Kh7 29.Rc8?? (29.Qa4 g5+–) 29...Kg6?? (better 29...Nf3! 30.gf3 Qg6 31.Kf1 Qb1 32.Kg2 Qg6 33.Kh3 Qf5 34.Kh4 Qg5 35.Kh3 Qf5 36.Kg2 Qg6 37.Kh1 Qb1 38.Bd1 Qd1 39.Kg2 Qe2 40.Qf7 Ne3 41.Kg3 Nf5 42.Kg2 Ne3 43.Kh3 Nf5=) 30.f4 (better 30.Qa4 Qf5 31.e4+–) 30...Ne3? (30...Ng4 31.Bg4 Qa1 32.Kf2 Nf6 33.Bh5 Kh5 34.Qf7 Kh4+–) 31.fe5 Qe5 32.Bd3 Kf6 (32...Nf5 33.Bf5 Kf6 34.Qd8 Kf5 35.Qd3 Kg5 36.Qd2 Kg6+–) 33.Qd8 1–0. GuestLVKD – PaulFang, freechess.org, 2020.

10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Rc8 13.a5 Qc7 14.Qc2 Rfd8 15.Ra4 Bd6= 16.Rg4 f6 17.Bc4+= Bd5 18.Bd5 ed5 19.Qf5 Ne5 20.Be5+/– Be5 21.d4 Bd6 22.dc5 bc5 23.Rh4 g5 24.Rh6 Be5 25.Ne5+– (25.Ne5 fe5 26.Rc6+– (26.Qg5?! Qg7 27.Rh5 Re8+/–)) 1–0. marek – nikozatsepin, ChessWorld.net, 2003.

10.Ne5 Rc8 11.f4 (11.Nd7 Qd7 12.a5 dc4 13.Bc4 Rcd8=) 11...Ne4 (11...Ne5 12.fe5 Nd7 13.Qc2=) 12.d3 Nd6 13.cd5 (13.Bf3 Ne5 14.Be5 Nf5=) 13...ed5 (13...Ne5 14.fe5 Nf5 15.d6+=) 14.Bg4 f5 15.Bf3 Nf6 16.Nd2 Rc7 (16...Re8 17.Qb3+=) 17.Qb3 Nf7 (better is 17...Rc8+=) 18.Nc6 (better is 18.a5!?+=) 18...Bc6+= 19.bc6 Rc6 20.Nc4?? (better is 20.Bf6 Bf6 21.Bd5+=) 20...dc4–+ 21.Bc6 (21.Qc4 Rd6 22.Rad1–+) 21...cb3 (21...cb3 22.Bb5 Nd6–+) 0–1. Hirt,Rudi – Glas,Karl, corr DDR–ch M778, 1985.

10.Ne5 Ne5 11.Be5 a6 12.ba6 Ba6 13.d3+=.

11.Rc1 dc4 12.Re1=.

11.Rc1 Rac8 12.Qc2 (12.cd5 ed5 13.Nc2 Ng4=) 12...Bd6 (12...d4 13.ed4 Bf3 14.Bf3 cd4 15.d3=+) 13.h3 Rfe8 (13...d4 14.Nb1=+) 14.Rfd1 (14.cd5 ed5 15.d3 Ne5=) 14...Qb8 (14...d4 15.ed4 Bf3 16.Bf3 cd4 17.Bc6=+) 15.cd5 ed5 (16.d3 Ne5=). Kukula – Gross,Wilhelm (2425), corr 3GMM½–06, 1998.

11.Rc1 e5 12.cd5 (12.d4 e4 13.Ne5 Rfd8=) 12...Bd5 (12...e4 13.Nd4=) 13.d4 (13.Nc4 e4 14.Nfe5 a6=) 13...e4 14.Ne5 Rad8 (14...Rfd8 15.Nd7 Nd7 16.dc5 Nc5 17.Bc4+=) 15.Nec4 (15.Nd7 Rd7 16.dc5 Bc5=) 15...cd4 (15...Qb7 16.Qc2=) 16.ed4 (16.Bd4 Nc5=) 16...Qb7 (16...Qf4 17.Qd2 Qh4 18.a5=) 17.Ne3= Rc8 (17...Be6 18.Bc4=) 18.Nf5 White gets strong initiative 18...Bb4 (18...Nb8 19.Qd2 Rfd8 20.Nc4+=) 19.Nc4+= g6 (19...Rfd8!?+=) 20.Nfd6 (20.Qb3 gf5 21.Qb4 Bc4 22.Bc4 Qb8+/–) 20...Bd6 21.Nd6 Rc1 22.Qc1 Qb8 (22...Qa8 23.Ba3+/–) 23.Ba3 Rd8 24.Qg5 Be6 (24...Qa8 25.f3+–) 25.f4 (25.f3 e3 26.Qe3 Nd5+–) 25...Kg7 (25...Bb3 26.f5 Rf8 27.Nc4+–) 26.f5 h6 27.Qg3 Bd5 28.fg6 fg6 29.Nf5 Kh7 30.Bd6 With the decisive threat Ne7 30...Qb7 (30...Qa8 31.Ne7 Rg8 32.Be5+–) 31.Ne7 Threatening mate... how? 31...Bf7 32.Bc4!! Be8 (32...Bc4 Theme: Deflection from g6 33.Qg6 A double attack) 33.Be5 (33.Qf4 h5 34.Qg5 h4+–) 33...Rc8 34.Nc8 (34.Bf6?! Rc4 35.Bh4 Qc7+–; 34.Rf6?! Nf6 35.Nc8 Qc8+–) 34...Qc8 35.Be6 (35.Rf6?! Nf6 36.Qb3 Kg7+/–) 35...Qd8 36.Bf6 (36.Qf4 Ne5 37.Qf6 Qd4 38.Kh1 Qc5+–) 36...Nf6 37.Qe5 Kg7 38.Rc1 h5 (38...Kf8+–) 39.Rc8 (39.Rc8 Qc8 40.Bc8+–) 1–0. Schiffler – Braun, corr, 1950.

11.Qc2 Bd6+=.

11.d3 dc4 12.Nc4 a6=.

11.d4 cd4 12.Nd4 dc4 13.Nc4 Rfd8 14.Rc1 Nc5 15.f4 Rac8 (15...Nd5 16.Bf3=) 16.Ne5 Nfe4 17.Nf7 (better 17.Nec6 Bc6 18.bc6+=) 17...Kf7-/+ 18.Bc4 Bd5?? (better 18...Nf6 19.f5 Bd5 20.fe6 Kg8 21.Bd5 Rd5–+ (21...Nd5?! 22.Nf5 Bf6 23.Qe2=+)) 19.Qh5+= Kg8 20.Ne6 Be6 (20...Qd7 21.Rfd1 Ne6 22.Qd5 Qd5 23.Bd5=) 21.Be6 Kh8?? (21...Ne6 22.Rc7 Nc7 (22...Rc7? 23.Qg4 Rd6 24.f5+–) 23.Bg7 Kg7 24.Qe5 Bf6 25.Qe4 Nd5+–) 22.Bf5 (22.Bf5 Ng5 23.fg5 Qh2 24.Qh2 h5 25.Qh5 Kg8 26.Bh7 Kh8 27.Be4 Kg8 28.Qh7) 1–0. onur604 (2320) – spab (2320), lichess.org, 2020.

11.d4 Rfd8 12.Qb3 (12.Rc1 Rac8=) 12...Ne4 13.Rac1 Rac8 14.Rc2 Qb8 15.Rfc1 Bf6 (better 15...cd4 16.ed4 Bd6=+) 16.Ne5? (better 16.cd5!? Bd5 17.Bc4=) 16...Ne5-/+ 17.de5 Be5 18.Be5 Qe5 19.f4 (19.cd5 Bd5 20.Nc4 Qg5-/+) 19...Qf6 20.Bf3 d4 21.Qd3 Nd6 (21...de3!? 22.Qe3 Rd4 23.Re1-+) 22.Bb7-/+ Nb7 23.g3 (23.Rf2 de3 24.Qe3 Rd4-/+) 23...de3-+ 24.Qe3 Qd4 25.Kf2 (25.Re1 Rd6-/+) 25...Rd7 26.Re2 Rcd8 27.Rc3 (27.Rce1 Nd6-+) 27...Na5 (27...Qd1 28.Qf3-+) 28.Nc2 (28.f5 ef5 29.Nc2 Qe3 30.Ne3 g6-+) 28...Qe3 (28...Qd1!? 29.Qf3-+) 29.Ne3-/+ Rd2 30.g4 Re2 (30...Kf8 31.f5-/+) 31.Ke2 Rd4 32.Kf3 Kf8 33.h4 f6 34.g5 (34.h5 e5 35.fe5 fe5-/+) 34...Kf7 35.Rc1 Kg6 36.Kg4? (36.gf6 gf6 37.f5 ef5 38.Rg1 Kf7 39.Nf5 Rd7 (39...Rc4?! 40.Nd6 Kf8 41.Nc4 Nc4 42.Kg4=) 40.Rg7 Ke6 41.Rd7 Kd7-/+) 36...f5 (36...fg5!? 37.hg5 e5 38.Rf1-+) 37.Kf3 Kh5 38.Rc2 Nb3 39.Rc3 Nd2 40.Ke2 Kh4 41.Rc1 (41.Rc2 Ne4 42.Kf3 Rd2 43.Rd2 Nd2 44.Ke2 Ne4-+) 41...Kg3 42.Rh1? (42.Nc2 Rd6 43.Ne1-+) 42...Kf4 (42...Nf3 43.Nf1 Kf4 44.Rh7 Rc4 45.Rg7 Rc2 46.Kd1-+) 43.Rh7 (43.Nc2 Rd6 44.Rh7 Nf3-+) 43...Rd7 (better 43...Nf3 44.Nf1 Rc4 45.Rg7 Rc2 46.Kd1-+) 44.Rh5 (44.g6 Nf3 45.Nf1 Nd4 46.Kf2 Kg5-+) 44…Ne4 (44...Ne4 45.Nf1 Rd4-+) 0-1. Mely (2160) - Vogelfrei (2330), ChessWorld.net, 2018.

11.h3 Rad8 12.Qc2 (better is 12.cd5 ed5 13.Rc1+=) 12...dc4 (better is 12...Bd6!?+=) 13.Nc4+= Nd5 14.Nfe5 (14.a5 Nb4 15.Qb3 Bd5+=) 14...Bd6 (14...Nb4 15.Qb3=) 15.f4 (15.Nd6!? Qd6 16.Nc4+/–) 15...Nb4= 16.Qc1 (16.Qc3 Ne5 17.fe5 Be7=) 16...Ne5 17.fe5 Be7 18.d4 (18.a5 Be4=) 18...Rd7 (better is 18...Be4 19.Qd2 f6+=) 19.Nd2? (better is 19.Qd2!?=) 19...Rc8 (19...cd4 20.Qc7 Rc7 21.Bd4-/+) 20.Nf3 (20.Nc4 Bd5-/+) 20...Qd8–+ 21.Qb1 (21.Qd2 cd4 22.Bd4 Nc2–+) 21...Nd5 22.Nh2?? (better is 22.Kf2–+) 22...Ne3 23.Rf7 (23.Rc1 cd4 24.Bf3 Bf3 25.Nf3–+) 23...Bg5 (better is 23...Kf7 24.Qh7 Qg8 (24...Bg2?? 25.Bh5 Kf8 26.Qh8; 24...cd4?? 25.Bh5 Kf8 26.Qh8) 25.Bh5 Kf8–+) 24.Rd7 Qd7 25.Nf3 Bf4 (25...Bf3!? 26.Bf3 cd4-/+) 26.dc5-/+ Rc5 27.Ba3 (27.Qd3 Qc8-/+) 27...Rc2 (27...Qc7 A) 28.Bc5?? Qc5 29.Qd3 Ng4 30.Nd4 Be3 (worse is 30...Ne5 31.Qd1 Be3 32.Kh1 Bd4 33.Rb1–+) 31.Kf1 Nh2 32.Ke1 Bd4–+ (32...Qd4?! 33.Qd4 Bd4 34.Rd1 Bc3 35.Kf2+=); B) 28.a5 Bd5 B1) 29.Bc5 Qc5 (29...bc5? 30.b6 Qe7 31.a6+–) 30.Kh1 Nf5–+; B2) 29.Qb2–+) 28.Ra2-/+ Ra2 (28...Bf3 29.Bf3 Qd2 30.Rc2 Nc2 31.Bg4 Qd4 32.Kh1 Na3 33.Be6 Kh8 34.Qf1 Qe5 35.Bg4–+) 29.Qa2 Bd5 (29...Bf3 30.Bf3 Be5 31.Bb4-/+) 30.Qd2+= Bf3?? (30...g6 31.Bb4+=) 31.Qb4 (31.Qd7 Bh2 32.Kh2 h6 33.Qe6 Kh8 34.Qe8 Kh7 35.Bd3 Be4 36.Be4 Nf5 37.Bf5 g6 38.Qg6 Kh8 39.Qh7) 31...Qf7-/+ 32.Bf3 Nc2 (32...Be5?? 33.Qe4 Qf4 34.Qa8 Bb8 35.Qc6+–) 33.Qb3 (33.Qe7 Na3 34.Qa3 Be5+=) 33...Na3 34.Qa3 Be5 35.Qc1 (35.Qd3 Qc7+=) 35...Qd7 36.Qc6 Qd4 37.Kf1 Qd3 (37...Kf7 38.Qe4+=) 38.Kg1 Bd4 (38...Qb1 39.Kf2 Qb2 40.Kg1+=) 39.Kh2= Be5 40.g3 (40.Kg1 Kf7 41.Bh5 g6 42.Qf3 Qf5=) 40...Qg6 (40...Kf7 41.Bh5 g6 42.Qf3 Qf5 43.Bg4=) 41.Qc8 (41.Bg4 Kf7=) 41...Kf7 42.Qd7 Kf8 43.Qd8 (43.Qc8 Qe8 44.Qe8 Ke8=) 43...Qe8 44.Qe8 Ke8 45.Bd1 (45.h4 Kd7=) 45...Ke7 (45...g6 46.h4=) 46.Kg2 (46.h4 g6=) 46...Kf6 (46...g6 47.h4=) 47.Kf3 (47.g4 Bb8=) 47...g5 (47...g6 48.h4=) 48.g4 ½–½. Biberger,Hans (1960) – Laux,Bernhard (1700), Wch Seniors Bad Wildbad, 1997.

11.Qb3 dc4 12.Qc4 Bf3 13.gf3+=.

11.Qb3 Bd6 12.cd5 ed5 (12...Nd5 13.Ne4 Nf4 14.Bd3 Nd3 15.Qd3 Be4 16.Qe4 Rfd8 17.d3 a6 18.Rfb1 Ra7=) A) 13.Rfc1 c4 (13...d4 14.ed4 Rac8 15.dc5 Nc5 16.Qc4 Bf3 17.Bf3 Bh2 18.Kf1 Bf4=) 14.Qc2 Nc5 15.Rab1 Nb3 16.Re1 d4 17.Nd4 Nd4 18.ed4 Bh2+=; B) 13.Qd1 Rfe8 (13...Rac8 14.d4 Rfe8 15.Rc1 c4 16.Qc2 Ne4 17.Ne4 Re4 18.Qc3 a6=) 14.d4 Rac8 15.Rc1 c4 16.Qc2 Ne4 17.Ne4 Re4 18.Qc3 a6=; C) 13.d4 Rac8 (13...Rfe8= 14.Rfc1 Rac8 15.a5 cd4 16.ab6 Nc5 17.Qa2 ab6 18.ed4 Ra8=) 14.Rfd1 Rfe8 15.Qc2 cd4 16.Rd4 Ne5 17.h3 Nf3 18.Bf3 Bh2=.

11.Qb3 Bd6 12.h3 Rac8 (12...dc4 13.Qc4 Bf3 14.Bf3+= Ne5 15.Qe2 Rad8 16.d4 Nf3 17.Qf3 cd4 18.ed4 Qc4+=; 12...Rfd8 13.cd5 Nd5 14.a5 Ne5 15.d3 ba5 16.Ne5 Be5 17.Nd5 Bd5 18.Be5 Qe5=) 13.d3 (13.cd5 c4 (13...Nd5 14.d3 Nb4= 15.Ne4 Rfd8 16.Qc3 e5 17.Rfc1 Be7 18.Nfd2 a6=) 14.Qc2 Nd5 15.Nd5 Bd5 16.Rfc1 Qb7 17.d3 cd3 18.Qd3 Nc5=) 13...Ne5 (13...Rfd8 14.cd5 ed5 15.Rac1= (15.a5 ba5 16.Qa4 d4 17.Nd1 Bf3 18.Bf3 Ne5=) 15...Nf8 16.Rfe1 Ne6 17.Nd1 Qe7 18.Nh4 d4=) 14.Nd2 (14.Ne5 Be5 A) 15.a5 ba5 (15...d4= 16.a6 Ba8 17.Na4 de3 18.fe3 Rcd8=) 16.f4 Bd6 17.Na4 e5 18.Bf3 e4=; B) 15.f4 Bd6 16.Bf3 d4 17.ed4 Bf3 18.Rf3 Bf4=) 14...Rfd8 15.Rfc1 (15.Qc2 d4 16.Nd1 A) 16...de3 17.fe3 Ra8= (17...a5 18.ba6 Ba6=) 18.a5 ba5=; B) 16...Ng6 17.a5 ba5 18.Nb3 Nh4=; 15.Rad1 d4 16.Nce4 Ne4 17.Ne4 de3 18.fe3 Be4+=) 15...Ng6 (15...dc4 16.dc4 Nd3 17.Bd3 Bh2 18.Kh1 Rd3 19.Rd1+=) 16.a5 (16.cd5 ed5 17.Nd1 Qe7= (17...Ne5 18.a5 Qe7=) 18.a5 Ne5=) 16...dc4 (16...d4!? 17.Nce4 Ne4 18.Ne4 de3 19.fe3 Be4 20.de4 Bh2 21.Kh1 Be5+=) 17.Nc4+= (worse is 17.Qc4 Bh2 18.Kh1 Ne5+= (worse is 18...ba5 19.Qa4+=)) 17...Bh2 18.Kf1 (18.Kh1 Ne5=) 18...Nh4 (18...Bd6+=) 19.e4 (19.g3 Bg3 20.ab6 ab6+=) 19...Qf4 (19...Bf4!? 20.Rd1 Ng6=) 20.Nd1 Be4 21.de4 Ne4 22.Bf3 Nf3 23.Qf3 Rd1?? (better is 23...Qf3 24.gf3 Nd2 25.Nd2 Rd2+/–) 24.Rd1+– Qh4 (24...Ng3 25.fg3 Qc4 26.Qd3 Qd3 27.Rd3+–) 25.Ne3 (25.ab6 ab6 26.g3 Bg3 27.fg3 Qh3 28.Ke1 Ng5+–) 25...f5 (25...Bd6 26.g4 Nf2 27.Rd6 Qh3 28.Qh3 Nh3 29.ab6 ab6 30.Rb6+–) 26.ab6 (26.Rd7 Rc7 27.Rad1 Rd7 28.Rd7 Kf8+–) 26...ab6 27.Ra7 g5 (27...g6 28.Rg7 Kf8 29.Rdd7+–) 28.Ke2 (better is 28.Nf5 Qf2 29.Qf2 Nf2 30.Rg7 Kf8 31.Rdd7 Ng4 32.Rh7 Be5 33.Be5 Nh6 34.Rh6 Ke8 35.Re7 Kd8 36.Rh8) 28...h5 (28...Bc7 29.Rd7 Ng3 30.fg3 Qb4+–) 29.Nf5! ef5 (29...ef5 30.Qb3) 30.Rg7 (30.Rg7 Kh8 31.Rg5 Be5 32.Be5 Nf6 33.Bf6 Kh7 34.Qf5 Kh6 35.Qg6; 30.Qb3 c4 31.Qc4 Rc4 32.Rd8) 1–0. Porkolab,S (1940) – Kiss,Pe2 (1785), Bela Perenyi Mem, Budapest HUN, 2009.

11.Qb3 Rad8 12.d3 d4 13.Nd1 Ng4 14.g3 e5 15.Ne1 (15.a5 Ngf6+=) 15...f5 16.Bg4 (16.a5 Qd6 17.h4 de3 18.Ne3 Ne3 19.fe3 e4-/+) 16...fg4-/+ 17.e4 (17.a5 Rf7-/+) 17...Bg5 (17...Rf7 18.a5-/+) 18.Qc2 (18.f3 Bd2 19.fg4 Rf1 20.Kf1 Rf8 21.Ke2 Ba5–+) 18...a5 (18...Rf7 19.Bc1 Bc1 20.Qc1+=) 19.ba6+= Ba6 20.Bc1 (20.f3 gf3 21.Nf3 Be7+=) 20...Bc1 (20...Be7 21.a5+=) 21.Qc1 h6 22.Nb2 (22.a5 ba5 23.Qd2 Nb6 24.Qa5 Ra8-/+) 22...Rf7 23.a5 (23.Qd2 Rdf8+=) 23...Rdf8 (23...ba5 24.Qd2+=) 24.ab6 Qb6 25.Na4 (25.Kg2 Bb7+=) 25...Qd6 26.Qd1 Qe6 27.Qd2 (27.Nb2 Rf6+=) 27...Bb7 28.Qa5 Ra8 29.Qb5 (29.Qd2 Bc6 30.Qd1 Qd6-/+) 29...Bc6 30.Qb3 Rff8 31.Ng2 Rfb8 (31...Qf6 32.Qc2-/+) 32.Qc2 Rb4 (32...Ba4 33.Ra4 Ra4 34.Qa4+=) 33.Nb2 Rab8 34.Nd1 Nb6 (34...Rf8 35.Ne1+=) 35.Nh4 (35.Qe2 Rb3+=) 35...Na4 (35...Ba4 36.Qd2+=) 36.Nf5 Bd7 (36...g6 37.Nh4+= (worse is 37.Nh6 Kg7-/+)) 37.Qe2 (37.f4 gf3 38.Rf3 Kh7+=) 37...h5 (37...Kh7 38.f3+= (38.Qg4? g6–+)) 38.Qd2 (38.f3 g6 39.Nh4 gf3=) 38...Qf6 (38...g6 39.Nh6 Kf8+=) 39.f4 Bf5 40.fe5 Qe5 41.Rf5 Qe8 42.Nf2 g6 (42...Rb1 43.Rb1 Rb1 44.Kg2+=) 43.Qg5 R8b6 44.Kg2 Kh7 (44...Re6 45.Rc5 Nc5 46.Qc5+=) 45.Rf4 (45.Re5 Re6 46.Re6 Qe6+=) 45...Re6 (45...Kg7 46.Rf1+=) 46.Ra4 (46.Rf1 Rb2+=) 46...Ra4= (worse is 46...Qa4 47.Qc5 Rb7 48.Qd4+/–) 47.Qc5 The passed pawn on c4 will become decisive later 47...Qd7 48.Qf8 Ra7 49.h3 (49.Qc5 Rea6=) 49...gh3 (49...Re8 50.Qf6 gh3 51.Nh3 Ra2 52.Rf2 Rf2 53.Kf2=) 50.Nh3= Threatening mate... how? 50...Re5 51.Rf2 (51.Rf6 Rea5=) 51...Qe7 52.Qb8 (52.Qe7 Ree7 53.Nf4 Ra3=) 52...Rb7 (52...Rea5 53.Qb6 Qe5 54.Nf4=) 53.Qa8 Ra7 (53...Rb1 54.Ra2 Qf6 55.Rf2=) 54.Qc8 (54.Qb8 Kg7+=) 54...Rb7 (54...Rea5 55.Rf8 Qg7 56.Qd8+=) 55.Qa8 (55.Nf4 Rb3=) 55...Ra7 (55...Qc7 56.Qf8=) 56.Qc8 Rc7 (56...Rea5 57.Rf8 Qg7 58.Qd8+=) 57.Qa6 (57.Qf8 Ra5=) 57...Ra7 (57...Qg7 58.Qf6 g5 59.Qg7 Kg7 60.Ng1+=) 58.Qb6 White gets in control 58...Rd7 59.Nf4 Qd6 (59...Rd6 60.Qb4 Rc6 61.Qe7 Re7 62.Rb2=) 60.Qb2 (60.Rb2 Rg5 61.Qd6 Rd6=) 60...Rf7 (better is 60...Rg5!?+=) 61.Nd5+= Rf2 62.Qf2 Rg5 63.Kh3 (63.c5 Qc5 64.Qf7 Kh6=) 63...Qe6+/– 64.Kh2 Qd6 (better is 64...Qe5!?+=) 65.Qf4+/– (65.Qd4?? Qg3 66.Kh1 Qh4) 65...Qe5 66.c5 h4 67.Qf7 Qg7 Do you see the mate threat? 68.Qg7 Kg7 69.c6 (69.gh4?! Re5+–) 69...hg3 (69...Rg3?? 70.c7+–) 70.Kg2 (better is 70.Kg1 Rh5 71.c7+–) 70...Rh5 71.Kg3 Rh1 72.c7 (72.Nb6 Rd1 73.c7 Rd3 74.Kf4 Rc3+–) 72...Rc1 73.Kf4 Kf7 74.Ke5 Rc6 75.Kd4 Ke6 76.Ke3 Kd7? (better is 76...Rc1+–) 77.c8Q (77.c8Q Rc8 78.Nb6 Kc7 79.Nc8 Kc8 80.Kf4+–) 1–0. Zielinska,Marta (Michna) (2365) – Grottke,Hans Joachim (2255), Oberliga Nord O, 1998.

11.Rc1 Rac8 12.d4 (12.cd5!? Nd5 13.d3=) 12...dc4+= 13.Bc4 (13.Na2 Ng4 14.g3 Bd5+=) 13...Bf3 (13...cd4 14.Na2 Bf3 15.Qf3 Ne5–+) 14.Qf3–+ cd4 15.Ne4 (15.Be6 fe6 16.Nd5–+) 15...Qd8 (better is 15...Ne5 16.Qh3 Nc4–+ (16...Ne4?! 17.Be6 Ng5 18.Qh5 fe6 19.Rc7 Rc7 20.Bd4-/+)) 16.Bd4+= Ne4 17.Qe4 Bf6 (17...Nc5 18.Bc5 Rc5 19.Rfd1+=) 18.Rfd1 (18.Bd3 g6 19.Rfd1 Rc1 20.Rc1 e5-/+) 18...Qe7 (18...Bd4!? 19.Rd4 Qe7+=) 19.Bd3+/– Threatening mate: Qxh7 19...g6 20.Rc8 Rc8 21.Qb7 Re8 (21...Qd8 22.Bf6 Nf6 23.a5+/–) 22.Qa7 Bd4 23.ed4 Qd6 24.Be4 Nf6 (24...Ne5 25.a5 ba5 26.Qa5+/–) 25.Qb7 (25.Bc6 Rb8+/–) 25...Rd8 (25...Ne4 26.Qe4 Rd8 27.Qf3+/–) 26.Bc6 h5? (better is 26...Qc5 27.Qc8 Qd6+/– (27...Rc8? 28.dc5 bc5 29.Rc1+–)) 27.Qb6+– h4 (27...Ng4 28.g3+–) 28.h3 g5 (28...Ne4 29.a5 Nc3 30.Rd2+–) 29.Rd3 (29.a5 Kg7+–) 29...Nd5 (29...e5 30.d5 e4 31.Rd2+–) 30.Qc5 Qf4 31.Bd5 (31.a5 Rc8+–) 31...Rd5 32.Qc3 (32.Qc6 Qe4 33.Qe8 Kg7+–) 32...Qd6 (32...g4 33.Qd2 Qd2 34.Rd2 gh3 35.gh3+–) 33.Qc8 (33.Qb2 Qd8+–) 33...Kg7 34.Qc3?? (better is 34.Qc4 Qb6+–) 34...f5?? (34...Kg8 35.Qc6 Qd8+–) 35.g3 (better is 35.Qc6!? Qc6 36.bc6 Rd8+–) 35...hg3 (35...e5 36.Qd2 f4 37.Qe2 ed4 38.gh4 gh4 39.Qd2+/–) 36.Rg3 f4 37.Rg4 Kf6 38.h4 gh4 39.Qh3 (39.Qd3 Rd4 40.Qg6 Ke7 41.Qh7 Ke8 42.Rg8 Qf8 43.Qh5 Kd7 44.Rf8 Rd5 45.Qe8 Kd6 46.Qc6 Ke5 47.Qc3 Rd4+–) 39...Rh5 40.Rh4 Rg5 41.Kf1 (41.Kh2 Qd4 42.Rh6 Kg7+–) 41...Qd4+/– The mate threat is Qd1 42.Rh6 Kg7 43.Re6 Qc4 44.Re2 Qc1 45.Re1 Qc4 46.Re2 Qc1 47.Re1 Qc4 48.Re2 ½–½. Zylla,Johannes – Hense, BS–Kreismeisterschaf, 1993.

11.Rc1 Bd6 12.cd5 Nd5 13.d4=.

11.cd5 ed5 12.d4 Rfd8 13.Qc2 Rac8 14.Rac1 Qb8 15.Bd3 cd4 16.Nd4 g6 17.Qb3 (17.Be2 Ne4+=) 17...Ne5 18.Bb1 Bd6 19.f4 (better is 19.h3!?=) 19...Nc4+= 20.Rce1 Nd2 21.Qd1 Nf1 22.Rf1 Ne4 23.Nc6 Bc6 24.bc6 Nc3 (24...Rc6? 25.Nd5 Nc3 26.Bc3 Bf4 27.Qf3 Rd5 28.ef4+–) 25.Bc3 Bc5 26.Rf3 Rc6 27.Bd3?! (27.Be5 Qc8 28.Qd2 d4 29.ed4 Bd4 30.Bd4 Rc1 31.Kf2 Rb1–+) 27...d4 28.Bb2 (28.ed4 Qd6 29.Kh1 Bd4 30.Bd2–+) 28...de3 29.Kf1 Qd6 30.Ke2 Bd4 (30...Qd5 31.Qb1 Rcd6 32.Bc1–+) 31.Bc1 (31.Bd4 Qd4 32.Re3 Qf4–+) 31...Qc7 32.Be3 Re6 33.Kf2 (33.g3 Qe7 34.Qd2 Re8–+) 33...Be3 34.Re3 Qf4 35.Qf3 (35.Rf3 Qh4 36.Rg3 Qd4 37.Kf1 Rf6 38.Rf3 Rf3 39.Qf3 Qd3 40.Qd3 Rd3–+) 35...Qd4 36.Bb5 (36.Bf5 gf5 37.Qe2 f4–+) 36...Rf6 (36...Rf6 37.g3 Rf3 38.Kf3 Qd1 39.Kf2 Rd2 40.Re2 Re2 41.Be2 Qa4–+) 0–1. Nixdorf,Manuel – Grom,Waldemar (2015), Finkenstein op, 1998.

11.cd5 Nd5 12.a5 Bd6=.

11.cd5= Nd5 12.Bc4 Rad8 (12...Nc3 13.Bc3 Bd6 14.h3+=) 13.d3 (13.Nd5 ed5 14.Be2 Bd6=) 13...Nb4 14.e4 (14.Ne4 Be4 15.de4 Bf6=) 14...Bf6+= 15.Qe2 Kh8 (15...Ne5 16.Rad1+=) 16.Ra3 (16.a5 ba5 17.Rfd1 a6+=) 16...Ne5 17.Ne5 Be5 18.f4 (18.Kh1!?+=) 18...Bf4-/+ 19.Qh5 (19.h3 Be5-/+) 19...Be3 (19...Nd3!? 20.Bd3 Rd3–+) 20.Kh1-/+ Bd4 21.Nd1 (21.a5 ba5 22.Qe2 a6-/+) 21...Bb2 (21...Nc2 22.Ra2-/+) 22.Nb2 Nc2 23.Rc3 Ne3 (23...Nd4 24.Kg1-/+) 24.Rf3+= Nc4 25.Rc4 (25.Nc4 Be4! 26.Re3 Qf4–+) 25...f5 26.Rh3 (26.a5 ba5 27.Na4 fe4 28.Rf8 Rf8–+) 26...h6 27.Qe2 (27.Rf3!?-/+) 27...fe4–+ 28.de4?? (better is 28.Kg1 Bd5 29.Rc2–+) 28...Rd2! (28...Rd2 29.Qe1 Rb2–+) 0–1. Jamieson,Ian (2060) – Tweedie,Steven (2170), ch–SCO Oban, 2005.

11.cd5 Nd5 12.Nd5 Bd5=.

11.dc4 a5 12.Nbd2 Qc8 (12...Bd6 13.Qc2=) 13.h3 (13.Qc2 Qc7=) 13...Rd8 (13...Qc7 14.Qc2=) 14.Qc2 Nf8 15.Rfd1 Ng6 16.Bd3 Qc7 17.Bg6 (17.Ng5 Nd7 18.Ndf3 Bf6=) 17...hg6 18.Be5 Bd6 19.Bd6 Rd6 20.e4 Nh7 (20...e5 21.Ne5 Be4 22.Ne4 Rd1 23.Rd1 Qe5 24.Nf6 gf6 25.Rd7=) 21.e5 Rd7 22.Ne4 Rad8 23.Nd6 (23.Re1 Rd3 24.Qe2 Be4 25.Qe4 Qb8=) 23...Ba8 (23...Bf3!? 24.gf3 f6-/+) 24.Rd2 (better 24.Ra3=) 24...Rf8?? (better 24...Bf3!? 25.gf3 f6=+) 25.Rad1 (25.Qd3 Rfd8 26.Rad1 Nf8+=) 25...Re7? (25...Bf3!? 26.gf3 Qd8+–) 26.Rd3 (better 26.Qb3+–) 26...f5? (26...Rd8!?+–) 27.Qd2 (27.Nh4 g5 28.Ng6 Rb8+–) 27...Rd7 (better 27...Be4 28.Re3 Bf3 29.Rf3 g5+–) 28.Ng5 Re7 29.Nh7 Kh7 30.Qg5 Be4 (30...f4 31.h4 f3 32.gf3+–) 31.Qh4 Kg8 32.Ne4 fe4 33.Qe4 Rf5 (33...Ref7 34.Rd6 Rf4 35.Qg6 Rc4 36.Qe6 Qf7 37.Qf7 Kf7 38.Rb6+–) 34.f4 (better 34.Rd8 Rf8 35.R8d6 g5+–) 34...g5? (34...Qb7 35.Qe3 Ref7 36.Rd8 Kh7+–) 35.Rd8 Kf7 36.fg5 (better 36.R1d6 gf4 37.Re6 Qd8 38.Qf5 Kg8 39.Rd6+–) 36...g6?? (36...Qe5 37.Qd3 Rg5+–) 37.Qh4 (37.R1d6 Re8 38.R6d7 Qd7 39.Rd7 Re7 40.Rd8 Re8 41.Qb7 Kf8 42.Rd7 Kg8 43.Rg7 Kf8 44.Rh7 Rf1 45.Kf1 Re7 46.Qe7 Kg8 47.Qf7) 37...Qd8 (37...Qe5 38.Rh8 Qg7+–) 38.Rd8 Re8 (38...Rf1 39.Kf1 Re8 40.Rd7 Re7 41.Qh7 Kf8 42.Qe7 Kg8 43.Qg7) 39.Qh7 Kf8 40.Qh8 Ke7 (40...Kf7 41.Qe8 Kg7 42.Qg8) 41.Qe8 1–0. retiponziani (1990) – neiculita (2130), ChessWorld.net, 2020.

11.dc4 a6 12.Nc3=.

11.dc4 Qc7 12.Nc3 Rad8 13.Qc2 Ne8 (13...Bd6 14.h3+=) 14.a5= Nd6 15.ab6 ab6 16.Rfd1 Ra8 17.Ra8 Ra8 18.e4 h6 19.e5 Nf5 20.Ne4 Rd8 (20...Ra2 21.Nc3 Ra8 22.Ne4=) 21.Rd2 Qb8 22.Qb1 Nf8 23.Rd8 Bd8 24.g4 Ne7 25.Nd6 Ba8 26.Qd3 (26.Ne1 Neg6 27.Qd1 Be7=) 26...Neg6= 27.Bd1 (27.Qd2 Be7=) 27...Nf4 28.Qe3 N8g6 29.Ne4 (29.Bc2 Bc7+=) 29...Qa7 30.Bb3 Qa5 31.Nfd2 Ng2 32.Kg2 (32.Qe2 Bc7 33.Kf1 Qb4-/+) 32...Bg5 33.Qc3 Bd2 34.Qa5 Ba5 (worse is 34...ba5 35.f3 Be3 36.b6+/–) 35.f3 Nh4 36.Kf2 Be4 37.fe4 Bd2 38.h3 Bf4 39.Ke2 Kf8 40.Bc3 g5 41.Kd3 Ng6 42.Bc2 Bc1 43.Bd1 Nf4 44.Kc2 Be3 45.Bf3 Nh3 46.Kd3 Bf2 47.Bd2 Bd4 48.Bc1 (48.Kc2!?-/+) 48...Kg7 49.Bd2 Kg6 50.Bc1 (50.Kc2 Be5 51.Bc1 Bf4–+) 50...Ng1 (50...Be5 51.Kc2–+) 51.Bd1 Be5 52.Be3 Nh3 53.Bf3 (53.Ke2–+) 53...Bf4 54.Bg2 Be3 55.Bh3 Bd4 56.Ke2 (56.Kd2 h5 57.gh5 Kh5–+) 56...h5 (56...h5 57.Kd3 hg4 58.Bg4 f5 59.ef5 ef5–+) 0–1. Welti,Manfred (1930) – Vieito Ribelles,Ariadna (1940), Support for Africa09, 2008.

11.dc4 Qc7 12.Nbd2 a6 13.Qc2 Rfd8=.

11.dc4 Qc7 12.Nbd2 Rfd8 13.Qc2 Nf8 (13...a6 14.Rfd1=) 14.Rad1 (14.a5 a6+=) 14...Ng6 15.Rfe1 Bd6 16.Nf1 (16.Bf6 gf6 17.Bd3 f5=) 16...e5 17.Ng3 e4 (better 17...a6=) 18.Nh4?? (better 18.Bf6 Re8 19.Nd2 Bg3 20.fg3 gf6 21.Rf1+/-) 18...Nh4-+ 19.Bf6 gf6 20.Ne4 (20.Rd2 Be5-+) 20...Be7 (20...Bh2 21.Kh1 Qe5 22.f3-+) 21.Ng3? (21.Rd8 Rd8 (21...Qd8?! 22.g3-/+) 22.Bf1 Qe5-+) 21...Ng6 (better 21...Ng2 22.Rd8 Rd8-+ (22...Qd8?! 23.Rd1 Qc8 24.Bd3-/+)) 22.Qf5 Qe5 23.Qh3 Qg5 (23...a6!?-+) 24.Nf5-/+ Bf8 (better 24...Be4 25.Bg4 Bf5 26.Bf5 Rd6-/+) 25.f4+= Qh4?? (better 25...Bg2 26.Qg2 Qf5+=) 26.Bf3 (better 26.Nh4 Nh4 27.Qh4+-) 26...Qh3-+ 27.gh3 Bf3 28.Rd7 (28.Rd8 Rd8 29.Kf2-+) 28...Rd7 29.Kf2 Be4 30.Ng3 f5 31.Nh5 Rad8 (better 31...Be7!? 32.Ng3-+) 32.Nf6 Kg7 33.Nd7 Rd7 34.Kg3 Be7 35.Re2 (35.Kf2 Rd2 36.Kf1 Nh4 37.Re2 Rd1 38.Re1 Bd3 39.Kf2 Rd2 40.Re2 Re2 41.Kf1 Nf3 42.e4 Rh2) 35...Bf6 (35...Bh4) 36.Rf2 (36.h4 Bh4 37.Kh3 Kh6 38.Rb2 Rd3 39.Rg2 Re3 40.Rg3 Kh5 41.Re3 Nf4) 36...Rd3 (36...Bh4) 37.h4 (37.Rf3 Bh4 38.Kg2 Rd2 39.Kf1 Bf3 40.e4 Rd1) 37...Bd4 (37...Bh4 38.Kh3 Bf2 39.a5 Nf4) 38.h3 Re3 (38...Be3 39.Rf3 Rd2 40.h5 Bf4 41.Rf4 Rg2) 39.Kh2 h5 (39...Nf4 40.Rf4 Re2 41.Rf2 Rf2 42.Kg1 Rf4 43.Kh2 Rf1 44.a5 Be5) 40.Rg2 (40.a5 Nf4! 41.Rf4 Re2 42.Rf2 Bf2 43.a6 Bd4 44.Kg3 Be5) 40...f6 (40...Bg2 41.Kg2 Rc3 42.a5 Nf4 43.Kf1 Rc1) 41.Rf2 (41.Rc2 Nf4 42.Rg2 Bg2 43.a5 Rh3) 41...Rf3 (41...Nf4 42.Rf4 Re2 43.Rf2 Bf2 44.a5 Bd4 45.Kg3 Be5) 42.Re2 Rd3 (42...Nf4 43.Rg2 Kh6 44.Rg3 Rf2 45.Rg2 Rg2 46.Kh1 Re2) 43.Rf2 (43.Ra2 Nf4 44.Ra3 Ra3 45.a5 Rh3) 43...Rc3 (43...Bf2 44.a5 Bg3 45.Kg1 Rd1) 44.Re2 (44.Rg2 Bg2 45.a5 Nf4 46.ab6 Rh3) 44...Rc4 (44...Nf4 45.Re3 Re3 46.Kg1 Re2 47.Kf1 Bg2) 45.Ra2 (45.Rg2 Bg2 46.Kg2 Nf4 47.Kf3 Rc3 48.Kf4 Kg6 49.a5 Be5) 45...Ra4! 46.Ra4 (46.Ra4 Nf4 Combination) 46...Bd5 (46...Nf4!? 47.Ra7 Kg6 48.Rd7-+) 47.Ra7 (47.Kg3 c4 48.Ra7 Kh6-+) 47...Kg8 (better 47...Kh6-+) 48.Rb7 (48.Kg3 Be3 49.Ra3 Bf4 50.Kf2 Be5-+) 48...Bf7 (48...Bb7 49.Kg3 c4 50.Kh2 Nf4 51.Kg3 Ne2 52.Kh2 Be5) 49.Rc7 (49.Rb6 Nf4 50.Rb8 Kg7-+) 49...Kg7 (49...Nf4 50.Kg3 Be5 51.Ra7-+) 50.Rc8 (50.Kg3 c4 51.Rc8 c3-+) 50...Bc3 (50...Nf4 51.Ra8-+) 51.Rc7 (51.Rb8 Ba5 52.Kg3 Bd5-+) 51...Bb4 (better 51...Nf4 52.Rb7 Nd5 53.Kg2-+) 52.Rb7 c4 53.Rb6 Ba5 (53...Ba5 54.Ra6 Bd2-+) 0-1. ClayPigeons (2165) - sjakkspiller24 (2200), Rated Bullet game, lichess.org, 2021.

11.dc4 Ne4 12.Qc2 Qc7 13.Bd3 (13.a5 ba5 14.Nbd2 Nef6=) 13...Ndf6 (13...Bf6 14.Ra2 Bb2 15.Be4 Be4 16.Qe4= (16.Rb2?? Bc2 17.Rc2 Ne5–+)) 14.Be5 (14.Nc3 Nc3 15.Bc3 Bf3 16.gf3 a6=) 14...Bd6= 15.Bd6 Nd6 16.h3 (16.Nbd2!?=) 16...Bf3+= 17.gf3 Qb7 (17...a6 18.Rd1+=) 18.e4 (18.Nd2 Rfd8+=) 18...e5 19.Kh2 (19.f4 Nd7+= (worse is 19...ef4 20.e5+/–; worse is 19...Nfe4 20.fe5 Ng5 21.ed6 Nf3 22.Kh1 Nd4 23.Be4 Nc2 24.Bb7 Na1 25.Ba8 Ra8 26.Rd1+=)) 19...Rae8 (19...Qc7 20.Nc3+=) 20.Be2 (20.a5 Qc7+=) 20...Kh8 0–1. DEFFM – GuestPLVX, freechess.org, 2016.

11.a5 ba5 12.Bc3 a6 13.Ba5 Nb6 14.Nc3 ab5 15.Nb5 Qc6 16.Ne5 Qc8 17.Bb6 Ba6 (17...Ra1 18.Qa1 dc4 19.Nc4 Bg2 20.Kg2 Qc6 21.Bf3 Qb5+–) 18.Nc7 (18...Bd6 19.Na8 (19.Ra6?! Ra6 20.Na6 Qa6+/–; 19.Na6?! Ra6 20.Ra6 Qa6+/–) 19...Be5 20.d4 cd4 21.Bd4 Bd4 22.Qd4 (22.ed4?! Qa8 23.Qa4 Bb7+–) 22...Qa8 23.Qb6+–) 1–0. Husarik,Branko (1705) – Krejci,Jan (1745), Frymburk Czech–ch U16, 2000.

11.Qc2 Bd6 12.Nbd2 a6 13.Rfc1 h6 14.cd5 ed5 15.Nf1 a5 16.Nd4 g6 17.f4 (17.Ra3 Rac8 18.Nf3 Rfe8=) 17...Rac8= 18.Qd2 Rfe8 19.Bf3 Bf8 20.Nb3 Bg7 21.Rc2 Qd6 22.Re1 Ba8 23.Rcc1 h5 24.Ra1 h4 25.Rac1 h3 26.g4 d4 27.e4 Qe6 28.Qc2 Ng4 29.Nd4 Bd4 30.Bd4 cd4 31.Qc8 Rc8 32.Rc8 Kg7 33.Ra8 Nc5 34.Re2 (better is 34.Ra1-/+) 34...Nd3 35.f5 gf5 36.ef5 Qf5 37.Bg4 Qg4 38.Ng3 Nc1 39.Rf2 d3 40.Re8 Ne2 (40...Ne2 41.Rfe2 de2–+; 40...Qa4 41.Re7 Qb3 42.Rff7 Qf7 43.Nf5 Kf6 44.Rf7 Kf7 45.Nd6 Kg6 46.Ne4–+) 0–1. Van Daatselaar,Jan Bart – Rupsys,Rimantas (2365), EM/CL/Q21–4 ICCF Email, 2002.

11.Nc3 Rac8 12.Nd2 Bd6 13.g3 d4 14.Nce4 de3 15.Nd6 Qd6 16.Bf3?? Bf3 17.Nf3 ef2 18.Rf2 Rfd8 19.Qe2 Ng4 20.Rg2 Nde5?? 21.Ne5+/– Ne5 22.Be5 Qd3 23.Qd3 Rd3 24.a5 f6 25.Bf4 e5+= 26.Bd2 Rcd8 27.Rd1 e4 28.ab6 ab6 29.Re2? e3!–+ 30.Re3 Re3 31.Kf2 Red3 32.Re1 Rd2 33.Kf3 Rc2 34.Re6 Rb8 35.Re4 Kf7 36.Kf4 Re8 37.Re8 Ke8 38.h4 Rc4 39.Kf3 (39.Ke3 Rb4–+) 0–1. stoker – mil, Live Game Caissa's Web, 2005.

11.Nbd2 a5 12.Rc1 Rac8 13.Rc2 Bd6 14.Qa1 (14.cd5 ed5 A) 15.Re1 Rce8 (15...Rfe8 16.Rc1 Ng4 17.Nf1 f6 18.Qc2 Re7 19.h3 Nge5 20.d4 Nf3=; 15...Rfd8 16.Rc1 Re8 17.Qc2 Ne5 18.Be5 Be5 19.Ne5 Qe5 20.Bf3 Re7=; 15...Rcd8 16.Nf1 Rfe8 17.Nd4 Be5 18.Qd2 Nb8 19.f4 Bd6 20.Ng3 Qd7=) 16.Bc3 Ng4 17.Nf1 f5 18.Qa1 Nde5 19.Ne5 Ne5 20.Qc1 Ng6=; B) 15.Qc1 Rfe8 (15...Rfd8 16.Qb1 Re8 17.Rfc1 Re7 18.h3 Qb8 19.Nh4 Rce8 20.Nf5 Re6=) 16.Re1 Ng4 17.Nf1 f6 18.Qd2 Nge5 19.d4 Nf3 20.Bf3 c4=; C) 15.Rc1 Qb8 (15...Rfd8 16.Re1 Re8 17.Qc2 Ng4 18.Nf1 f6 19.h3 Nge5 20.d4 Nf3=; 15...Ng4 16.h3 Ngf6 17.Nd4 Be5 18.f4 Bd4 19.ed4 Qd8 20.dc5 Nc5=; 15...Rfe8 16.Re1 Ng4 17.Nf1 f6 18.Qc2 Re7 19.h3 Nge5 20.d4 Nf3=) 16.Re1 Rfe8 17.Qc2 Ne5 18.Ne5 Be5 19.Be5 Qe5 20.Bf3 Re7=; D) 15.Nb3 Qb8 16.Re1 Rfe8 17.Nbd2 Ng4 18.Nf1 Rcd8 19.h3 Ngf6 20.N1d2 Re7=) 14...Rfe8 (14...dc4 15.Rc4 e5 (15...Rfe8 16.Ne4 e5 17.Nc3 Nd5 18.Ne4 Nb4 19.Nfd2 Bd5 20.Rc3 Rcd8=) 16.e4 Rcd8 17.Rfc1 Rfe8 18.Qb1 Nh5 19.Bd1 Nf4 20.Qc2 Nf6=; 14...Rfd8 A) 15.h3 Qb8 (15...e5 16.cd5 Nd5 17.Nc4 f6 18.Nfd2 Nb4 19.Rcc1 Nb8 20.Ne4 Be7+=; 15...Rf8 16.Rfc1 Rfe8 17.d4 e5 18.de5 Ne5 19.Rd1 Rcd8 20.Ne5 Be5=; 15...Re8 16.Rfc1 e5 17.cd5 Bd5 18.e4 Bb7 19.Nc4 Rcd8 20.Nh4 Re6=) 16.Rfc1 e5 17.cd5 Nd5 18.Ne4 Nb4 19.Rd2 f6 20.Rcd1 Bd5=; B) 15.Rd1 Qb8 (15...Re8 16.cd5 ed5 17.Rdc1 Qb8 18.Nf1 Re6 19.Ng3 Rce8 20.d4 Bg3=; 15...Ng4 16.h3 Ngf6 17.cd5 ed5 18.Nd4 Bh2 19.Kh1 Be5 20.N2f3 Re8=) 16.cd5 ed5 17.Re1 Re8 18.Qd1 Ng4 19.Nf1 Rcd8 20.h3 Ngf6=; C) 15.Rfc1 Qb8 (15...Ng4 16.h3 Ngf6 17.cd5 ed5 18.Nd4 Re8 19.Nf5 Bh2 20.Kh1 Bd6=; 15...e5 16.cd5 Nd5 17.Nc4 Nb4 18.Rd2 f6 19.Nh4 Bd5 20.Bf3 Bf3+=; 15...dc4 16.Rc4 e5 17.Rh4 Re8 18.Ne4 Bd5 19.Nc3 Be6 20.Ng5 Bb3=) 16.cd5 ed5 17.Re1 Re8 18.Qc1 Ng4 19.Nf1 Rcd8 20.Qa1 Ngf6=; D) 15.cd5 ed5 16.Rfc1 Re8 17.Qb1 Qb8 18.Nf1 Re6 19.Ng3 d4 20.ed4 Rce8=; 14...Rcd8 15.cd5 ed5 16.d4 c4 17.Ba3 Bb4 18.Rb1 Qd6 19.Bb4 ab4 20.Qb2 c3+=) 15.h3 (15.Rd1 Re7 (15...Ng4 16.h3 Ngf6 17.d4 cd4 18.Nd4 Nc5 19.cd5 Bd5 20.N4f3 Be7=; 15...Rcd8 16.cd5 ed5 17.Rdc1 Ng4 18.h3 Ngf6 19.Nd4 Rc8 20.Nf5 Bh2=; 15...e5 16.cd5 Bd5 17.Nc4 Rcd8 18.e4 Bb7 19.Nh4 Re6 20.Nf5 Be7+=) 16.Qc1 Ng4 17.h3 Ngf6 18.d4 cd4 19.Nd4 Nc5 20.cd5 Bd5=; 15.Rfc1 Ng4 (15...Qb8 16.cd5 ed5 17.Re1 Ng4 18.g3 Ndf6 19.Bf1 Re7 20.h3 Ne5=; 15...dc4 16.d4 c3 17.Rc3 Ne4 18.Ne4 Be4 19.Rc4 Bd5 20.dc5 Nc5=) 16.cd5 Bh2 17.Kf1 Bg3 18.de6 fe6 19.Bg7 Bf2 20.Ne5 Nde5+=) 15...h6 (15...e5 16.cd5 Nd5 17.Rfc1 Nb4 18.Rc3 Rcd8 19.Nc4 Nf8 20.Nfd2 Ng6=; 15...Rcd8 16.cd5 ed5 17.Re1 Rc8 18.Nd4 Bh2 19.Kh1 Be5 20.N2f3 Qb8=; 15...Re7 16.cd5 ed5 17.Nd4 Ree8 18.Nf5 Rcd8 19.Nf3 Qb8 20.Rfc1 Rc8=; 15...Red8 16.cd5 ed5 17.Nd4 Re8 18.Nf5 Qb8 19.Nf3 Rcd8 20.Rfc1 Rc8=) 16.Rd1 (16.Rfc1 e5 17.cd5 Bd5 18.e4 Bb7 19.Nc4 Rcd8 20.Nh4 Re6=) 16...Rcd8 (16...e5 17.cd5 Nd5 18.d4 ed4 19.Bd4 Re7 20.Bb2 Nb4=) 17.d4 e5 18.cd5 (18.dc5 Nc5 19.cd5 Nd5 20.Nc4 Nb4=) 18...Nd5 (18...ed4 19.Nd4 Bd5 20.Nc6 Bc6=) 19.de5 (19.dc5 Nc5 20.Nc4 Nb4=) 19...Ne5 20.Nc4 (20.Be5 Be5=) 20...Nb4 21.Rcd2 (21.Rd6? Nc2 22.Rd8 Qd8–+; 21.Nd6?! Nf3 22.gf3 Rd6+=; worse is 21.Be5 Be5 22.Rd8 Qd8 (22...Ba1 23.Re8 Kh7 24.Rc1+/–; 22...Rd8?! 23.Qe5 Qe5 24.Nfe5 Nc2 25.Nb6+=) 23.Nce5 Bf3 (23...Nc2?! 24.Qa2 Qd5 25.Bc4 Qd1 26.Kh2+=) 24.Bf3 Nc2-/+) 21...Nf3 22.Bf3 Bf3 23.gf3 Bf8 24.Be5 Qe7 25.Bd6 Qe6 26.Bf8 Qg6 27.Kh2 Rd2 28.Rd2 Kf8 29.Qc3 Kg8 30.f4 Re6 31.Rd8 Kh7 32.Qd2 Qf6 33.Ne5 Re5 34.fe5 Qe5 35.Kg1 Qg5 36.Kf1 Qh5 37.Qd7 Na2 38.Rf8 c4 39.Rf7 (39.Qf7?! Qh3 40.Ke2 Qg4 41.Kf1 Qh3 42.Ke1 Qh1 43.Ke2 Nc1 44.Kd2 Nb3 45.Ke2 Nc1 46.Kd2 Nb3 47.Ke2 Nc1=) 39...Qg6 40.Qd5 Qb1 41.Kg2 Qg6 42.Kf3 Nc3 43.Qc4 Qh5 44.Kg2 Qg6 45.Kh2 Ne2 (45...Na4 46.Rc7 (46.Qa4?! Qf7 47.Qe4 Qg6=) 46...Nc5 47.Rc8+–) 46.Rg7! (46.Qe2?! Qf7 47.Qc2 g6+–) 46...Qg7 (46...Qg7 47.Qd3 Double attack; 46...Kg7 47.Qe2 Combination) 47.Qe2 Qe5 48.Kg2 Qg5 49.Qg4 Qd5 50.f3 Qd2 51.Kg3 Qd6 52.Qf4 Qg6 53.Kh4 Qg1 (53...Qe6 54.Qe4 Qe4 55.fe4+–) 54.Qf5 Kh8 55.Qf6 (55.Qf6 Kg8 56.Qe6 Kh7 57.Qe4 Kh8 58.f4+–) 1–0. Fernandez Fornes,Juan A (2300) – Esteban,Fernando A (2350), XXI Campeonato Argentino Final, 2008.

11.Nbd2 a5 12.Rc1 Rac8 (12...dc4 13.Nc4 Ng4 14.Ncd2=) 13.Rc2 (13.cd5 Nd5 14.Nc4 Bf6=) 13...Rfd8 14.Qa1 (14.cd5 Nd5 15.Nc4 Bf6=) 14...Ne8 (14...Bd6 15.cd5 ed5 16.Rfc1=) 15.Rfc1 Bf6 16.d4 Nd6 (16...cd4 17.Bd4 Qd6 18.cd5 Rc2 19.Rc2 Qd5 20.Nc4=) 17.Ne5 (17.dc5 Qc5 18.cd5 Bb2 19.Qb2 Qd5 20.Rc8 Nc8+=) 17...Ne4 (17...dc4 18.Ng4 c3 19.Bc3 cd4 20.Nf6 gf6 21.ed4+= (worse is 21.Bd4 Qc2 22.Rc2 Rc2+=)) 18.Ne4 (18.Ng4 dc4 19.Nc4 Bg5+=) 18...de4 19.Ng4 Bg5 20.h4 Bh4 21.dc5 Qc5 22.Bg7 The mate threat is Nh6 22...Bg5 23.Nf6 (23.Rd2 h5 24.Bh6 Bh6 25.Nh6 Kf8 26.Rcd1+–) 23...Bf6 24.Bf6 Nf6 25.Qf6 Rd7 26.g3 (26.Rd1 Qf5 27.Qh4 Rd1 28.Bd1 Kg7+=) 26...Qf8 (26...Rcd8!?=) 27.c5+= bc5 (27...Rc5 28.Rc5 bc5 29.Qg5 Qg7 30.Qg7 Kg7 31.Rc5+/–) 28.Qg5+/– Qg7 29.Rc5 Do you see the mate threat?. 29...Qg5 (29...Rc5 30.Rc5 Qg5 31.Rg5 Kf8 32.Rc5+=) 30.Rg5 Kf8 31.Rc8 Bc8 32.Rc5 (32.Rh5 Rd2 33.Rc5 Bb7+/–) 32...Bb7 33.Kf1 Ke7 (33...f5 34.Bc4 Ke7 35.Re5 Rd1 36.Kg2=) 34.Rh5 Bd5 (34...Rc7 35.Rh7 Rc1 36.Kg2+/–) 35.Bd1 Kf6 (35...Rc7 36.Rh7 Rc1 37.Ke2+/–) 36.Rh7+– Rd8 (36...Ke7 37.Ke1+–) 37.Rh4 (37.Ke1 Ke7+–) 37...Ke5+/– 38.Ke1 Rc8 39.Kd2 (39.Rh7 Kf6+–) 39...Rd8 40.Kc3 Rc8 41.Kb2 Rc4 (41...Kd6 42.Rh7 Ke7 43.g4+–) 42.Rh8 (42.f4 Kd6+–) 42...Rb4+/– 43.Kc1 Rc4 44.Bc2 (44.Kd2 Rb4+–) 44...Rc7+– 45.Kb2 Kd6 (45...Rd7 46.g4+–) 46.Bb3 Kc5 (46...Bb7 47.Rd8 Ke7 48.Rd2+–) 47.Bd5 ed5 48.Kb3 f6 (48...Kd6 49.Ra8+–) 49.Ra8 (better is 49.Rh6!? Rf7 50.g4+–) 49...d4 50.ed4 (50.Re8 de3 51.fe3 Kd5 52.Rd8 Kc5+–) 50...Kd4+/– 51.Ra5 (51.Rd8 Ke5+/–) 51...Rc3 52.Kb2 Rf3 53.b6 Rf2 54.Kb3 Rf3 55.Kb4 (55.Kc2 Rc3 56.Kd1 Rc8+–) 55...Rf1 (55...e3 56.Ra8 e2 57.Rd8 Ke3 58.Re8 Kd2 59.b7+/–) 56.Ra8 (56.Ra7 e3 57.Re7 Kd3+–) 56...Rb1 (56...e3!? 57.Re8 Kd3+/–) 57.Ka5+– e3 58.Re8 Rb2?? (58...Kd3 59.Ka6 e2+–) 59.Ka6 e2 60.b7 (60.b7 Kc4 61.Re2 Re2 62.b8Q Re6 63.Qb6+–) 1–0. Badenes,Anselmo Raul – Pisani,Carlos Alejandro, corr, 1980.

11.Nbd2 a5 12.Rc1 Rad8 (12...dc4 13.d4=) 13.Qc2 Bd6 (13...e5 14.cd5 Bd5 15.e4+=) 14.h3 (14.cd5 Nd5 15.d4 cd4 16.Qc7 Bc7 17.Nd4 Nc5=) 14...Ne5 (14...e5 15.cd5 Nd5 16.Ne4=) 15.cd5 (better is 15.Be5 Be5 16.d4=) 15...ed5 (better is 15...Nd5!? 16.Ne5 Nb4=) 16.Ne5+/– Be5 17.Nf3 (better is 17.d4!? Bd6 18.dc5 Qc5 19.Bf6 Qc2 20.Rc2 gf6 21.Bg4+/–) 17...Bb2= 18.Qb2 Rfe8 19.Rfd1 (19.d4 c4=) 19...Qe7 (19...d4 20.ed4 Qe7 21.dc5 Qe2 22.Qe2 Re2 23.c6=) 20.Nd2 (20.d4 c4=) 20...Nd7 (20...d4 21.e4+=) 21.Nf3 (better is 21.d4!?=) 21...d4-/+ 22.e4 Ne5 (22...f5!?-/+) 23.Ne5+= Qe5 24.Bf1 (24.Bg4 Re7+=) 24...Rd6 (24...Rc8 25.Be2+=) 25.Qd2 Rh6 26.f4 Qh5 (26...Qd6 27.Re1+=) 27.g4 (27.Be2 Qh4 28.Bg4 Re7+=) 27...Qh4 28.Qf2 Qe7 29.Bg2 g5 (29...Re6!?+=) 30.fg5= Qg5 31.Rf1 The mate threat is Qxf7 31...Qg7 32.Qf4 Rhe6 (32...Re5 33.Rc2=) 33.Rf2 Re5 (33...Qg6 34.Rcf1 R8e7 35.g5=) 34.Rcf1+= The pressure on f7 grows 34...R8e7 35.Qg3 Bc8 36.Rf6 R5e6 (36...R7e6 37.Rf7 Qf7 38.Rf7 Kf7 39.Qh4+–) 37.Qb8 (37.Re6 Re6 38.Qc7 Qf8+/–) 37...Qf8+= 38.Qf4 (38.g5 Qd8+/–) 38...Rf6 39.Qf6 Re6 40.Qf4 Qe7 41.Qb8 Qb7 42.Qf4 (42.Qg3 Qe7+=) 42...Qe7= 43.Qf5 Bd7 44.Qf4 (44.Qd5 Bc8=) 44...Kg7 45.g5 (45.Qc7 Be8 46.Qe7 Re7=) 45...f6 (45...Rg6 46.h4=) 46.gf6 Qf6 47.Qg3 Qg6 48.Qc7 Re7 49.Qd8 Threatening mate... how? 49...Qe6 50.Qf8 Kg6 51.Rf3 Qe5 52.Kf2 h5 (52...Rg7 53.Rg3 Kh6 54.Rg7 Qg7 55.Qd6 Kh5 56.Qc7+– (56.Qb6?! Qg5=)) 53.Rg3 Bg4 54.Qf5 Qf5 55.ef5 Kf5 56.hg4 hg4 57.Be4 (57.Bd5 Kf4=) 57...Kf4 58.Bd5 (58.Bc6 Rh7=) 58...Rh7 (58...Re3 59.Re3 de3 60.Ke2=) 59.Be6 Attacks the isolani on g4 59...Rh2 60.Rg2 g3 61.Kg1 Rh5 62.Bb3 (62.Re2!? Re5 63.Re5 Ke5 64.Bc4+=) 62...Re5= Do you see the mate threat? 63.Kf1 Re3 (63...Kg4 64.Re2 Re3 65.Bc4=) 64.Bc2 Rf3 65.Ke1 Re3 66.Kf1 Kf3 67.Bd1 Kf4 68.Rd2 Re7 69.Re2 (69.Bb3 Re8=) 69...Re3 70.Rd2 Kg5 (70...Kf5 71.Bb3=) 71.Kg2 (71.Bb3 Kf4=) 71...Kf4 72.Be2 (72.Bb3 Re5=) 72...Re7 73.Bf1 Re1 74.Re2 Ra1 (74...Re2 75.Be2 Ke3 76.Bf1=) 75.Re6 (75.Re4 Kf5+=) 75...Ra4 76.Rb6 The passed pawn on a5 will become decisive later. The passed pawn on b5 will b (76.Rf6 Ke5 77.Rb6 Ra1+=) 76...Ra2= 77.Kg1 Rb2 78.Rb8 Ke3 (78...a4 79.Ra8=) 79.Re8 Kf4 80.Rf8 (80.Re4 Kf5=) 80...Ke5= 81.Rb8 (81.Ra8 a4=) 81...Kd6 (81...a4 82.Ra8 Rb5 83.Ra4=) 82.Rb6 (82.Ra8 Rb5 83.Kg2 Rb2 84.Kg3 Ra2+=) 82...Ke5 83.Rb8 Kd6 (83...a4 84.Ra8 Rb5 85.Ra4=) 84.Rb6 (84.Ra8 Rb5 85.Kg2+=) 84...Kc7 (84...Kd5!?=) 85.Rc6+/– Kb7 86.Rc5 Kb6 87.Rc4 Rb4 88.Kg2 Rc4 (better is 88...Kb5 89.Rc8 a4 90.Rb8 Kc5+/–) 89.dc4–+ a4 90.c5 (90.Kg3 a3 91.c5 Kc5–+) 90...Kc5 91.Bc4 (91.Kg3 a3 92.Bc4 d3–+) 91...a3 (91...Kc4?! 92.b6 d3 93.b7–+) 92.Kg3 d3 93.Kf2 (93.Bd3 Theme: Deflection from a2 93...a2) 93...d2 94.Ke2 (94.Be2–+) 94...Kc4 95.b6 a2 96.b7 d1Q! 97.Kd1 Decoy to d1 97...a1Q (97...a1Q 98.Kd2 Qd4 99.Ke2 Qe4 100.Kf2 Qb7–+) 0–1. Kreuzer,Uwe – Golf, Landesliga Mannheim, 1993.

11.Nbd2 a6 12.ba6 Ra6 13.d4=+.

11.Nbd2 a6 12.ba6 Ra6 13.cd5 ed5 14.Re1=+.

11.Nbd2 a6 12.ba6 Ra6 13.cd5 Nd5 14.d4=.

11.Nbd2 Rac8 12.a5 dc4 13.Nc4 Rfd8 14.Nfe5 Ne5 15.Be5 Qd7 16.ab6 Qb5 17.Ra7 Rd7 18.Qb1 Qb1 19.Rb1 Ra8 20.Bc7 Ra7 21.ba7 1–0. pcmvr (2830) – agostinhoarruda (2605), net–chess.com, 2014.

11.Nbd2 Bd6 12.a5 ba5 13.Nb3 a6-/+ 14.Bc3 (14.Ra5 ab5 15.Ra8 Ra8 16.cb5 e5-/+) 14...ab5 15.cb5 a4 16.Nbd2 e5 17.Ra4 e4 18.de4 de4 (18...Ne4?! 19.Ra8 Ra8 20.Qc2+=) 19.Ng5 Bh2 20.Kh1 Be5 21.Ba1 (21.Ra8 Ra8 (21...Bc3 22.Rf8 Nf8 23.Bc4+/–) 22.Qb3 Bd5–+) 21...Nb6 (21...Ra4 22.Qa4 Ra8 23.Qb3–+) 22.Ra8 Ra8 (worse is 22...Na8 23.Qc2 Ba1 24.Ra1-/+) 23.Be5 Qe5 24.Nh3 Rd8 25.Qc2 Bc8 26.Nb3 (26.Nf4 g5 27.Nh3 h6-/+) 26...Bg4 27.Nf4 (27.Rd1 Rc8–+) 27...g5 (27...Be2 28.Qe2 c4 29.Nc1–+) 28.Nh3 Nbd5 (28...Be2 29.Qe2 g4 30.Nf4–+) 29.Rc1 Bh3 (29...Nb4 30.Qc4 Be2 31.Qe2–+) 30.gh3 Qf5 31.Bf1 g4 32.Kh2 Rd6 (32...Rc8 33.Qb2-/+ (33.Nc5? Nd7 34.Qe2 Rc5 35.Rc5 g3 36.Kg3 Nc5–+)) 33.Qe2 (better is 33.Nc5 Rb6 34.Nb3+=) 33...Nc3!–+ 34.Qc2? (34.Rc3 Qe5 Double attack (34...Qe5 Decoy)) 34...gh3 35.f4 Ng4 36.Kh1 Nd1! 37.Rd1 Rd1 38.Qe2 Ne3! 39.Qe3 Rf1 40.Kh2 (40.Qg1 Rg1 41.Kg1 Qf4 42.Nd2 Qd2 43.Kf1 h2 44.b6 h1Q) 40...Qg4 41.Qd2 e3 (41...Qg1 42.Kh3 Rf3 43.Kh4 Qg3 44.Kh5 Qh3 45.Kg5 Rg3 46.Kf6 Qe6) 42.Qd8–+ Kg7 43.Qg5 Qg5 (43...Qg5 44.fg5 e2 45.Nd2 Rf2 46.Kg3 e1Q 47.Kg4 Qg1 48.Kh4 h2 49.Nf3 h1Q 50.Nh2 Qhh2) 0–1. Frosinos,Ioannis – Koukoufikis,Alexandros (2180), Glyfada op 2nd, 2000.

11.Nbd2 Rad8 12.a5 ba5 (12...dc4 13.Nc4 Ng4 14.g3=) 13.Qa4+= Nb6 14.Qa5 Rd7 (14...Ra8 15.Be5 Qd8 16.cd5 ed5 17.d4+=) 15.Be5 (15.Qa7? Ra8–+) 15...Qd8 16.Qc3 (16.Qa7 dc4 17.Qa2 cd3–+) 16...Ng4 1–0. GuestBMCH – GuestDHYS, freechess.org, 2018.

11.Nbd2 Rad8 12.Qb3 d4 13.ed4 cd4 14.Bd4 e5 15.Be3 e4 16.de4 Ne4 17.Ne4 Be4 18.Rfd1 Bf6 19.Rac1 Qb7 20.c5 bc5+= 21.Bc5 Nc5 22.Rc5 Qb6 23.Rcc1 h6 24.Nd2 Bg5? 25.Ne4+– Bc1 26.Rc1 Rfe8 27.Ng3 Rd2 28.Qf3 f6 29.Bc4 Kh8 30.h3 Re5 31.Bf7 Rg5 32.Rc8 Kh7 33.Bg8 Kg6 34.Qe4 f5 35.Rc6 Qc6 36.Qc6 (36.Qc6 Rd6 37.Qd6#; 36.bc6 fe4 37.Ne4 Rd1 38.Kh2 Re5–+) 1–0. Fredek (2065) – Guest1242168, Freundschaftspartie, 5m + 0s, 2006.

11.Nbd2 Rfd8 12.cd5 ed5 13.Rc1 Rac8 14.Nb3 Qb8 15.Nfd2 Bd6 16.g3 a6 17.Bf3 ab5 18.ab5 Ne5 19.d4? Nd3–+ 20.Rb1 Nb2 21.Rb2 c4 22.Nc4 dc4 23.Nc1 Ne4 24.Rc2 Bb4 25.Na2 Ba5 26.Qc1 c3 27.Rd1 Nd2 28.Bg4 Nf3 29.Bf3 Bf3 30.Re1 Be4 31.Rce2 c2 32.Qb2 Bd3 33.Nc1 Be1 34.Re1 Be4 35.f4 Qc7 36.Kf2 Qd7 37.Rg1 Qg4 38.Ke1 Qd1 39.Kf2 Qf3 40.Ke1 Qe3 41.Kf1 Rd4 (42.Qd4 Qd4 43.f5 Qd2 44.Rh1 Bg2 45.Kg1 Bh3 46.f6 Qe3) 0–1. hal1958 – One_I, playchess.de, 2003.

11.Nbd2 e5 12.cd5 Bd5 13.Nc4 Bc4 14.dc4=.

11.Nbd2 e5 12.cd5 Bd5 13.e4+– Bb7 (13...Be6 14.Ng5+–) 14.Nc4 White prepares the advance a5 14...Bd6 15.a5 a6 (15...Rfe8 16.Qb3+–) 16.ab6+– Nb6 17.Nd6 Qd6 18.Be5 Qe7 (18...Qe6 19.Qb1+–) 19.ba6 Ba6 20.Qc2 Rfc8 Black plans c4 21.Rfb1 Nbd7 22.Bb2 (22.Bc3 c4 23.e5 cd3 24.Bd3 Bd3 25.Qd3 Ne8+–) 22...c4+– 23.dc4 Nb6?? (better 23...Bb7+–) 24.e5+– Nfd7 25.Bd3 (better 25.Bd4 Nd5 26.Bd3+–) 25...Nd5 (25...Bc4 26.Ra8 Ra8 27.Bh7 Kh8+–) 26.Bh7 Kh8 27.Be4 Rc4 (27...N7b6 28.Ba3 Qd8+–) 28.Qc4! (28.Bd5?! Rc2 29.Ba8 Nc5+–) 28...Bc4 29.Ra8 Nf8 30.Ba3 (30.Ba3 Qa3 31.Ra3+–) 1–0. onur604 (2320) – Jc6213 (1940), lichess.org, 2020.

11.Nbd2 e5 12.cd5 Nd5 13.Rc1 Nb4 14.Qb3 Bd5?? 15.Nc4?? Bf6 16.Rfd1 Rad8 17.h3 e4 18.de4+= Be4 19.Nd6 Bb2 20.Qb2+/– Nf6?? 21.Ne4+– Ne4 22.Qb4!! Rd1 23.Bd1 (23.Bd1 Re8 24.Qc4+–) 1–0. Fredek (2065) – Guest15308, Freundschaftspartie, 5m + 0s, 2006.

11.Nbd2 e5 12.cd5 Nd5 13.Nc4 Bf6 14.Qb3 (14.a5 a6 15.ba6 Ra6+=) 14...Rfe8 (14...a6 15.Rfb1=) 15.a5 Rad8 (15...a6 16.ba6 Ra6 17.e4+=) 16.ab6 (16.Rfc1 Nb4+=) 16...ab6= 17.Ra7 Ra8 18.Rb7 Qb7 Theme: Deflection from d6 19.Nd6 Theme: Double Attack 19...c4 (19...Qa7 20.Ne8 (20.Qd5?! Qa2 21.Qa2 Ra2 22.Ne8 Rb2+–) 20...Qa2 21.Nf6 N5f6 22.Qc2+–) 20.dc4 (better is 20.Qc4!? Qc7 21.Ne8 Qc4 22.dc4 e4+–) 20...Nc5 21.Qd1 (21.cd5 Qb8 (21...Nb3? 22.Nb7 e4 23.Nd4+–) 22.Ne8 Nb3 23.Nf6 gf6-/+) 21...Ne3 22.fe3 Qd7 23.Ne8 Qe8 24.Qc2 Ra4 (24...Qe6 25.Bc3+–) 25.Rd1 Rb4 (25...Ra2 26.Qb1 Ra8 27.Rd6+–) 26.Ne5! Be5 (26...Qe5 27.Be5) 27.Be5 f6 (27...Rb3 28.e4 Re3 29.Bg4 Re4 30.Bf5 Re5 31.Bh7 Kh8 32.Bd3+/–) 28.Bd4 Qe7 29.Bc5 (29.Ra1 Qe8+–) 29...Qc5 (29...bc5 30.Qd2+–) 30.Qd3 (30.Qe4!? g6+–). Genne,Rene – Schaerer,Marie Anne, SUI–ch op2 Luzern, 1994.

11.Nbd2 Rfe8 12.h3 (12.a5 a6=) 12...h6 (12...a6 13.Qc2=) 13.Qc2 Rac8 (13...a6 14.cd5 ed5 15.ba6 Ra6 16.Nd4=) 14.a5+= Bd6 15.Rfd1 Rcd8 16.a6 (16.cd5 ed5 17.Nb3 ba5+=) 16...Ba8+= 17.Rac1 (17.cd5 ed5 18.Re1 Re6+=) 17...Rc8 18.Qb1 Qb8 19.Re1 (19.cd5 ed5 20.Qc2 d4=) 19...Ne5 (19...dc4 20.Nc4 Rcd8 21.Qc2+=) 20.Qa1 (20.cd5 Bd5 21.e4 Ba8+=) 20...Ned7 21.Bf1 (21.cd5 ed5 (21...Bd5? 22.e4+–) 22.Qa4 Re7=) 21...Rcd8 (21...e5 22.e4 d4 23.Be2=) 22.Rcd1 (22.cd5 ed5 (22...Bd5? 23.e4+–) 23.Be2 Re6=) 22...Qc7 (22...e5 23.e4 d4 24.Be2=) ½–½. Okon – Struk,J, Police Poland, 1992.

11.cd5 Bd5 12.Nc3 Bb7=.

11.cd5 Nd5 12.a5 ba5=+.

11.cd5 Nd5 12.Nc3 Nc3 13.Bc3 a6=.

11.h3 Rad8 12.Nbd2 Rfe8 13.d4 dc4 14.Nc4 Nd5 15.Qb3 Bf6 16.Rac1 e5 17.de5 Be7 18.Rfd1 h6 19.a5 Bf8 20.a6 Ba8 21.Rd2 Re6 22.Rcd1 Be7 23.Rd5 Bd5 24.Rd5 Re8 25.Qc3 Nf8 26.Nd6 Rd8 27.Bc4 Rg6 28.Nf5 Ne6 29.Ne7 Qe7 30.Qd3 Kf8 31.Rd8 Nd8 32.Qd5 Re6 33.Qe4 Rg6 34.Bd3 Qd7 35.Kh2 h5 36.Nh4 Rh6 37.Nf5 Re6 38.Ng7 Kg7 39.Qh7 Kf8 40.Bf5 Qb5 41.Bc3 Qa6 42.Be6 Ne6 43.f4 Qe2 44.f5 Nd8 45.e6 Qe3 46.Qh8 Ke7 47.Bf6 1–0. phildo (1835) – lhongzs (1720), gameknot.com, 2013.

11.h3 Rfd8 12.Qc2 (12.cd5 Bd5 13.Nc3 a6=) 12...e5 (12...dc4 13.Qc4 Bd5 14.Qc2=) 13.Nbd2 (13.cd5 Bd5 14.Nc3 Bb7=) 13...d4 14.ed4 (14.a5 ba5 15.Qa4 a6 16.Qa5 Qd6+=) 14...ed4 (14...cd4 15.Ba3 Ba3 16.Ra3-/+) 15.Rfe1 Bd6 (15...Re8 16.a5+=) 16.Nf1 (16.a5 Re8+=) 16...Re8-/+ 17.Rad1 (17.a5 ba5 18.Qd2 a6 19.Qa5 Nb6-/+) 17...Ne5 (17...a6 18.ba6 Ra6 19.Rb1-/+) 18.Ne5+= Be5 19.Nd2 Bf4 (19...a6 20.Bf3+=) 20.Bc1 (20.Bf3 a6+=) 20...Re7 (20...a6 21.Bf3+=) 21.Nf3 (21.Bf3 Bf3 22.Nf3 Rae8+=) 21...Bc1 (21...Rae8 22.Bd2-/+) 22.Qc1 Rae8 23.Qd2 Nd7 24.Ra1 h6 (24...Qd6 25.a5-/+) 25.Nh2 Ne5 (25...a6 26.ba6 Ba6 27.a5+=) 26.Ng4 Ng6 (26...Re6 27.Ne5 Re5 28.a5+=) 27.Bf1 (27.a5 Nf4 28.Bf1 Re1 29.Re1 Re1 30.Qe1 ba5 31.Qe8 Kh7+=) 27...Bc8 (27...Qf4 28.Qf4 Nf4 29.Re7 Re7 30.a5+=) 28.Nh2 (28.Re7 Qe7 29.a5 Bg4 30.hg4 Ne5-/+) 28...Ne5 (28...Qf4 29.Re7 Re7 30.Qf4 Nf4 31.a5-/+) 29.Be2 (29.a5 Bf5-/+) 29...Bf5 30.Nf3 Nf3 31.Bf3 Re1 32.Re1 Re1 33.Qe1 Bd3 34.Qe8 Kh7 35.Bd5 Bg6 36.g3 d3 (36...Bf5 37.Bf7 h5 38.g4 hg4 39.hg4+–) 37.Be4 (37.Qe3!?-/+) 37...d2 38.Bg6 fg6 (38...Kg6 39.Qe4 f5 40.Qe6 Kh7 41.Qf5 Kg8 42.Qd3=) 39.Qe2 Qd7 40.Qd1 Qd3 41.h4 (41.f3 Qc4 42.Qd2 Qa4–+) 41...Qc3 (41...Qc4 42.Qd2 Qa4 43.Qd3–+) 42.Kf1? (better is 42.f3–+) 42...Qc4 (42...Qc4 43.Kg2 Qe4 44.f3 Qe1–+) 0–1. Ruhle,E – Mani,T, FO1, 1995.

12.d4 Ndf6 (12...cd4!? 13.ed4 dc4+=) 13.h3+= dc4? (better is 13...Nh6+=) 14.hg4+– Ng4 15.Ne5 (15.Rc1 Bf6+–) 15...Nh6? (better is 15...c3 16.Bg4 cb2+/–) 16.Ndc4 (16.Rc1 Rfd8+–) 16...Rfd8 (16...cd4 17.Qd4 Rfd8 18.Qf4+–) 17.Rc1 Bd6 (17...Rac8 18.Bf3+–) 18.Nd6 Rd6 19.Bf3 (19.Qc2 Rc8+–) 19...Rad8 (19...Rc8 20.a5+–) 20.Bb7 (20.Qc2 Rc8+–) 20...Qb7 21.Qf3 Qb8 (21...Qf3 22.Nf3 cd4 23.Nd4 Kh8+–) 22.Nc6 Qc7 (22...Rc6 23.bc6 (worse is 23.Qc6 Ng4 24.g3 Ne3 25.fe3 Qg3 26.Qg2 Qe3 27.Qf2 Qg5 28.Kh1 f6+–) 23...a6 24.dc5+–) 23.Nd8 (23.dc5 bc5 24.Be5 Qb7 25.Bd6 Rd6+–) 23...Rd8 24.dc5 f5 (24...bc5 25.Rfd1 Rc8+–) 25.cb6 Qb6 26.Qc6 (26.Be5 Rd5 27.Rc8 Rd8+–) 26...Qb8 (26...Qc6 27.bc6 Nf7+–) 27.Qe6 Kh8 28.Qh6 (28.Qh6 Qb7 29.Qc6+–) 1–0. Bousios,H – Kouloussias, Greece Easter Cup, 1977.

12.cd5 ed5 13.a5 a6 14.ab6 Qb6=.

12.h3 Nge5 13.Rc1 Rfd8 (13...dc4 14.Ne5 Ne5 15.Nc4 Nc4 16.Rc4=) 14.cd5 Bd5 (14...Nf3 15.Bf3 ed5 16.Nb3=) 15.d4 (15.Ne5 Ne5 16.d4 Nd7=) 15...Nf3 16.Bf3 Qb7?? (better is 16...a6=) 17.e4+– Ba2 18.Ra1 e5 (18...cd4 19.Ra2 e5 20.Be2+–) 19.Ra2 (19.dc5!? Be6 20.c6 Qc7 21.cd7 Qd7+–) 19...cd4 20.Nb3 (20.Be2 Bb4+–) 20...Rac8 (20...Nc5 21.Nc5 bc5 22.Qd3+–) 21.Qd3 Bb4 22.Rc1 Rc1 23.Bc1 Rc8 24.Rc2 Rc3 (24...Rc2 25.Qc2 Bc3 26.Bd2+–) 25.Rc3 Bc3 26.Ba3 Qc7 27.Be2 Nf6 28.f3 Nh5 (28...h6 29.f4+–) 29.Qc4 Qd8 30.Qc6 h6 31.Qd5 (31.Bc4 Nf4 32.Qb7 Qf6+–) 31...Qg5? (31...Qh4 32.Bf1 Qe1=) 32.Bc4 Do you see the mate threat? 32...Qe3 33.Kh1?? (better is 33.Kh2 Qf4 34.Kh1 Ng3 35.Kg1 Qe3 36.Kh2+–) 33...Qe1= 34.Kh2 The mate threat is Qxf7 34...Qg3 35.Kg1 ½–½. Baxa,O – Tietzen,S, Passau, 1997.

12.h3 Nge5 13.Qc2 Bf6 (13...dc4 14.Ne5 Ne5 15.Nc4 Nc4 16.Qc4=) 14.cd5 Nf3 15.Nf3 (15.Bf3 Bb2 16.Qb2 Bd5 17.Bd5 ed5=) 15...Bb2 16.Qb2 Bd5 17.e4 (17.Qc2 Qd6=) 17...Bb7 18.Rac1 (18.a5 e5=) 18...Qf4 (18...a6 19.Rfd1+=) 19.Qd2 (19.a5 ba5 20.Ra1 Rfb8+=) 19...Qd2 20.Nd2 Rfd8 (20...a6 21.Ra1=) 21.f4 (21.Nc4 a6=) 21...e5 (21...a6 22.Nc4=) 22.Nc4 ef4 23.Rf4 f6 24.Rcf1 (24.a5 Bc8+=) 24...Nf8= 25.g4 (25.Rg4 Ng6=) 25...Ne6 26.R4f2 Nd4 27.Bd1 (27.Bf3 Rd7=) 27...Ne6 (27...Bc8 28.e5 fe5 29.Ne5+=) 28.Bc2 Nd4 (28...Rab8 29.Bb1=) 29.Bb1 (better is 29.Bd1=) 29...Re8?? (better is 29...Bc8=) 30.Nd6+– Re7 (30...Rab8 31.Ba2 Kh8 32.g5+–) 31.Ba2 Kh8 32.g5 (32.Nb7 Rb7 33.Bd5 Rbb8+–) 32...Rd8? (better is 32...Rf8+/–) 33.Nf7 (33.gf6 gf6 34.Rf6 Rd6 35.Rd6 Ne2 36.Kh2 Re8+–) 33...Kg8?? (better is 33...Rf7 34.Bf7 Bc8+–) 1–0. Zielke,Bernd (1640) – Kaduszkiewicz,Martin, It (open) Kiel (Germany), 2006.

12.h3 Nge5 13.cd5 Bd5 14.Ne5 Ne5=.

12.h3 Bf6 13.d4 Nh6 14.cd5 ed5 15.Qc2 Be7 (15...Rfc8 16.dc5 Qc5 17.Qc5 Rc5 18.Bf6 Nf6 19.Nd4+=) 16.dc5 bc5 (16...Qc5 17.Bc3+/–) 17.a5 (17.e4 Bf6 18.Bf6 Nf6 19.ed5 Rad8+/–) 17...Rac8+= 18.e4 d4 (18...c4 19.Qc3 Bf6 20.e5+=) 19.a6 (19.Rfc1 Qb8+/–) 19...Ba8+= 20.Rac1 (20.Bd3 Rfe8+=) 20...Qb8= 21.Bd3 f6 22.Qb3 Kh8 23.Qe6 Qd6 24.Qd6 Bd6 25.Rfe1 Nf7 26.Nc4 Rfe8 27.Rc2 g6 28.Rce2 Kg7 29.Ba3 (worse is 29.Nd6 Nd6 30.e5 Bf3 31.ef6 Kf6 (31...Nf6?! 32.gf3 Re2 33.Re2-/+) 32.Re8 Re8 33.Re8 Ne8 34.gf3 Nb6–+) 29...Bf8 30.Kf1 (30.Bc1 Re6+=) 30...Re6 31.Bc1 Nb6 (31...Rce8 32.Bf4+=) 32.Bf4 White prepares the advance e5 32...Na4 33.Bd2 Nd6 Increases the pressure on e4 (33...Be7 34.Kg1+=) 34.Nd6 (better is 34.Ra1!? Nc3 35.Bc3 dc3 36.b6 Be4 37.Be4 Ne4 38.b7= (worse is 38.ba7 Ra8-/+)) 34...Bd6+= 35.Bc4 Re7 36.e5 Bf3?? (better is 36...fe5 37.Ne5 Nb6+=) 37.ef6+– Kf6 38.Re6 Re6 39.Re6 Kf5 1–0. Nadanian,Ashot (2345) – Guzkowska,Magdalena (2235), Polanica Zdroj op (2), 1996.

12.h3 Ngf6 13.a5=.

11.Na3 c3 12.Bc3 Nd5 13.Bb2 Rc8 14.Nc4 White prepares the advance a5 14...cd4 15.Nd4 Qc7 16.a5 Bf6 17.Rc1 (17.a6 Ba8=) 17...Qb8 (17...ba5 18.e4 Nf4 19.Bd3+=) 18.a6+= Ba8 19.Ba3 (19.Qd2 Rfd8+=) 19...Nc5= 20.Na5 Rfd8 21.Nac6 Rc6? (21...Bc6 22.bc6 e5+=) 22.Nc6+/– (22.bc6 e5 23.e4 Nc3 24.Rc3 ed4+=) 22...Bc6 23.bc6 Be7 (23...Ne3!? 24.fe3 Rd1 25.Rfd1 Qe5 26.Bc5 bc5+=) 24.Qc2 Qc8 (24...Qc7 25.e4 Nf6 26.Bc5 Bc5 27.Rfd1+/–) 25.Rfd1 (25.Bb5!? Bd6+–) 25...Qc6+/– 26.Bc5 bc5 27.e4 (27.e4 Nf4 28.Rd8 Bd8 29.Bf1+/–) 1–0. Pietrzak,Janusz – Lebel,Patrick, corr ICCF EU–M–794, 1990.

11.Bc4 cd4 12.Qd4 Nc5 13.Nbd2 Qd4 14.Bd4 Nce4 15.Ne4 Be4 16.a5 Bd5 17.Ne5 Bc5 18.Bc5 bc5 19.Rfd1 Bc4 20.Nc4 Rfd8 21.b6+/– ab6 22.Nb6+– Rd1 23.Rd1 Rb8 24.a6 Nd5 25.a7 Nb6 26.ab8Q (26.ab8Q Nc8 27.Qc8) 1–0. b4_player – opponent, gamecolony.com, 2007.

11.Bc4 cd4 12.Nd4 Nc5 13.Nc3 Qc7 14.Rc1 Rad8 15.Qe2 h6 16.Rfd1 Rd7 17.h3 Rfd8 18.Nf3 Rd1 19.Rd1 Rd1 20.Qd1 Qd6 21.Qd6 Bd6 22.Nd2 Be5 23.Ndb1 Nd5 24.Nd5 Bb2 25.Ndc3 Ne4 (25...Kf8 26.f3=+) 26.Ne4= Be4 27.Nd2 Bb7 (27...Bg6 28.Kf1=) 28.Kf1 (28.Bd3 g6=) 28...Kf8 29.f3 Ke7 30.Ke2 Kd6 31.Nb3 f5 32.Kd3 g5 33.Nd2 e5 Black intends f4 (33...Be5 34.e4=) 34.Bb3 Ba1 35.Bc2 Bd5 (35...h5 36.Bb3=) 36.Bb3 Bb7 37.Bg8 f4 38.e4 (38.a5 a6=) 38...Bd4 (38...a6 39.Bc4 ab5 40.Bb5=+) 39.Nb3= Bf2 40.Kc4 (40.Bc4 Bc8=) 40...Be3 41.Na1 Bc8 42.Nc2 Bc5 43.Bf7 a5 44.Ne1 h5 45.Nd3 (worse 45.Bh5 Be6 46.Kd3 Bb3-/+) 45...Be3 46.Bh5 Be6 47.Kc3 Bd4 48.Kc2 Bc4 49.Be8 (49.Nb2 Bf1=+) 49...Bd3-/+ 50.Kd3 Bf2 (better 50...Kc5!?-/+) 51.Kc4= Bg3 52.Bc6 ½–½. BeepBeepImAJeep – ganjabro, lichess.org, 2018.

11.Bc4 cd4 12.Nd4 Nc5 13.Nd2 Rc8 14.Be2 Re8 15.Rc1 Nce4 16.Ne4+/– Be4 (16...Ne4 17.Nc6 Bc6 18.bc6+/–) 17.Nc6 Bc6 18.bc6 Bc5 (18...Qc7 19.Qc2+/–) 19.Ba6 Rc7 (19...Rc6 20.Bf6 gf6 21.Bb5+–) 20.Be5+– Qd1 21.Rfd1 Rce7?? (better is 21...Rc6 22.Bb5 Rcc8 23.Be8 Re8 24.Bf6 gf6+–) 22.c7 Ng4 (22...Rc7 23.Bc7 Nd5+–) 23.Rd8 Ne5 24.c8Q (24.c8Q Kf8 25.Bb5+–) 1–0. pierred – anony, internet, 2014.

11.Bc4 cd4 12.Nd4 Rc8 13.Nd2 Ne5 14.Be2 Ned7 15.N2f3 Nd5 16.Rc1 Bf6 17.Rc8 Qc8 18.Qa1 Qb8 19.Rc1 Rc8 20.Rd1 Nc5 21.h3 Rd8 22.a5 Nb4 23.a6 White gets the initiative 23...Bf3 (23...Be4 24.Qa3 Nc2 25.Nc2 Bc2 26.Rd8 Qd8 27.Qa1+=) 24.Bf3+= Bd4 25.Rd4 Nb3? (25...Nc2 26.Rd8 Qd8 27.Qd1 Qd1 28.Bd1+–) 26.Rd8+– Qd8 27.Qa3 Nd3? (27...Qd3 28.Qb4 Qb1 29.Kh2 Qb2+–) 28.Qb3 Nb2 29.Qb2 g6 30.Qd4 (30.Qc3 h6+–) 30...Qc7 (30...Qd4 31.ed4 Kf8 32.g4+–) 31.Bc6 (31.Qe4 Qc1 32.Kh2 Qc7 33.g3 Kf8+–) 31...Qe7 32.f4 Qa3 (32...f6 33.g3+–) 33.Kh2 (33.Qe5 Qe7+–) 33...h5 (33...Qe7 34.Qe5+–) 34.Qd8 Kg7 35.Qd4 (35.Qc7 Qe3 36.Be8 Kh6 37.Qf7 Qe4+–) 35...Kg8 36.h4 (36.e4 Kh7+–) 36...Qc1 (36...Qe7 37.Kg3+–) 37.Bf3 (37.Qe5 Qe1 38.Qf6 Qb4+–) 37...Qe1 38.g3 Qf2 (38...Qf1 39.Qe4 Qb5 40.Qa8 Kg7 41.Qa7+–) 39.Bg2 (39.Bg2 Kh7 40.Qd7+–) 1–0. BeepBeepImAJeep (2600) – Ehidna (1990), lichess.org, 2017.

11.Bc4 Nd5 12.Nbd2 N7f6 13.dc5 Bc5 14.Ba3 Ba3 15.Ra3 Qe7 16.Ra1 Rac8 17.Bd5 Bd5 18.Rc1 h6 19.h3 Ne4 20.Ne4 Be4 21.Nd2 Bd5 22.Qg4 Qf6 23.Ne4 Be4 24.Qe4 Rfd8 25.Rc8 Rc8 26.Qb7 Qd8 27.Ra1 Rc7 28.Qf3 Rd7 29.Kf1 Rd5 30.Ke1 Rf5 31.Qb7 Qf6 32.Qc8 Kh7 33.Rc1? Rf2–+ 34.Rc2? Rf1 35.Kd2 Qf2 36.Kd3 Rd1 37.Kc3 Qe3 38.Kb2 Qd4 39.Kb3 Rb1 40.Ka3 Qb4 (41.Ka2 Qb3) 0–1. hal1958 – cantilever, playchess.de, 2003.

11.dc5 Nc5 12.Bc4 Rc8=.

11.Nbd2 Bd5=.

12.Nbd2 Qc7 13.Be2 (13.Rc1 Rfd8=) 13...Qb8 14.h3 (14.dc5 bc5 (worse 14...Rc5 15.Ba3+–) 15.Qc2 Rfd8=) 14...Qa8 (14...cd4 15.Nd4 Rfd8 16.Bf3=) 15.a5 ba5 16.Ra5 Bd8 (16...Bd5 17.dc5 Bc5 18.Qa1=) 17.Ra1 Bb6 18.Nc4 Qb8 19.Nb6 ab6 20.dc5 Rc5 21.Bd4 (21.Bd3 e5 22.e4 Rcc8=) 21...Rf5 (21...Bf3 22.Bf3 Rb5 23.Bc6=) 22.Nd2 (22.Qa4 e5 23.Bb2 Nc5=) 22...Rg5 Threatening mate... how? 23.Bf3 (23.Nf3!? Bf3 24.Bf3 Rb5 25.Bc6=) 23...Bf3=+ 24.Qf3 Rb5 25.Nc4 (25.e4 Qd6 26.Bf6 Nf6-/+ (26...gf6?! 27.Rfd1=; worse 26...Qd2 27.Rad1 Qd1 28.Rd1 Nf6 29.Qd3+=)) 25...Rc8 26.Rfc1 h6 (26...e5 27.Bb2-/+) 27.Qe2 (27.Rc3 Rd5=+) 27...Rd5 (27...e5 28.Bc3 Rbc5 29.Bb4-/+) 28.Rab1 The pressure on the isolated pawn grows (28.Qb2 b5 29.Ba7 Qb7-/+) 28...b5 29.Na5 White gets the initiative 29...Rc1 30.Rc1 Qe8 (30...e5 31.Bb2-/+) 31.Nc6=+ Nb8 (better 31...e5!? 32.Ba7 Qf8-/+) 32.Nb4 Rd8 33.Bf6 gf6 34.Qg4 (34.Rc5 Nd7 35.Rb5 Ne5+=) 34...Kf8 (34...Kh7 35.Qh5=) 35.Qf4 Ke7 (35...Kg7 36.Rc5+=) 36.Qh6+– Rc8 37.Rb1 Rc4 38.Qh5 Qd7 39.Qf3 Qd6 (39...Qc7!?+=) 40.Qb7+– Nd7 41.Qb5 Rc5 42.Qd3 Qe5?? (42...Qd3 43.Nd3 Rd5 44.Rb3+–) 43.Qe2 (better 43.Rd1 Kf8 44.Qd7+–) 43...Qf5 (43...Qe4 44.Nd3+–) 44.Nd3 (44.e4 Qg5+–) 44...Rc3 45.Rd1 Qb5 46.Nf4 Qe2 47.Ne2 Rc6 48.Nd4 Rd6 49.f4 e5?? (better 49...f5+–) 50.Nf5+– Ke6 51.Nd6 (51.Nd6 Nb6 52.f5 Ke7 53.h4+–) 1–0. BeepBeepImAJeep (2530) – milacek (2705), lichess.org, 2017.

12.Nbd2 cd4 13.Bd4 Ne4 (13...Bf3 14.gf3 Bb4 15.Rc1+=) 14.Qb3 Nd2 15.Nd2 Bf6 16.Bf6 Qf6 17.Rfd1 Rfd8 18.Be2 Nc5 19.Qb1?? (19.Qb4 e5=) 19...Rc7 (better is 19...Rd2 20.Rd2 Ne4–+) 20.Nf3+= Rd1 21.Qd1 Rd7 22.Qe1 Nd3 23.Qf1 Nc5 24.Nd4 (24.Qe1!?=) 24...e5-/+ 25.Nf3 Qe7 26.Bd1 f6 27.a5 Qd8 28.ab6 Qb6 29.Be2 Kf8 30.Qc1 Ke8 (30...Bf3 31.Bf3 Qb5 32.Rb1+=) 31.Qa3 (31.Nd2 Bd5+=) 31...Bd5 32.Rc1 Rc7 33.h3 (33.Nd2 Kf8=) 33...g5 (33...Bf3!? 34.Bf3 Qb5=) 34.Nd2+= Ne4 (34...f5 35.Nc4 Bc4 36.Rc4+=) 35.Bh5+/– Kd7 36.Rc7 Qc7 37.Ne4 Be4 38.Qf8 Qd8 39.Bg4 f5? (better is 39...Kc7 40.Qc5 Kb7+/–) 40.Bf5+– Bf5 41.Qf5 Kd6 42.Qd3 Kc7 43.Qh7 Kb6 44.Qg7 Qd1 45.Kh2 Qe2 (45...Qd5 46.Qg5 Kb5 47.h4+–) 46.Qf6 Ka5 47.Qa6 Kb4 48.Kg3 Qb5 49.Qa7 Kc3 50.Qg7 Kd2 51.Qg5 Qb2 52.e4 (52.e4 Kd3 53.f4 ef4 54.Qf4+– (54.Kf4?! Qf2 55.Ke5 Qd4 56.Ke6 Qe4 57.Kf7 Qh7 58.Qg7 Qf5 59.Qf6 Qd7 60.Kg6 Qe8 61.Kg7 Qd7 62.Kh6 Qa7+–)) 1–0. Krafzik,Joachim (1845) – Frey,Walter (1680), Chiemgau Cup Seniors 3th, 2007.

12.Nbd2 Bd5 13.Be2 cd4 14.Nd4 Nc5 15.Bf3 Bf3 (15...Nd3 16.Qb1 Nb2 17.Qb2=) 16.N2f3+= Qc7 17.Nc6 Bd6 (17...Nd5 18.a5+=) 18.Bf6+– gf6 19.h3 Rfe8 20.Nfd4 Bf8 21.Rc1 Bg7 22.a5 f5 23.ab6 ab6 24.Qf3 Kh8 25.Rfd1 Rg8 26.g3 Ra8 27.h4 Ra2 28.Rc2 (28.Ra1!? Ra1 29.Ra1+=) 28...Rc2= Black gets strong initiative 29.Nc2 Bf6 30.N2b4 (30.Qf4!? Qf4 31.ef4 Bh4 32.Ne5+=) 30...Bh4=+ 31.Kg2 Bf6 32.Rh1 Ne4 33.Qh5? (33.Rh2!?=+) 33...Rg7 (better 33...Rg3!? 34.Kf1 Rg7–+) 34.Na6 Qd6 The mate threat is Rxg3 35.Qe2 Ng3 36.fg3 Qg3 37.Kf1 f4 38.Qf2 Qg6 (better 38...Qg4 39.Qe2 f3 40.Qh2–+) 39.Ke2 (39.Nab4 Qe4 40.Rh2–+) 39...Qc2 40.Kf3 Qc4 (40...Rg3!? 41.Qg3 fg3 42.Kg3 Qg6 43.Kh2 Qh5 44.Kg1–+) 41.Rg1 Qd5 (better 41...Qb5 42.Rg7 Qc6 (42...Kg7?! 43.Nab4–+; 42...Bg7?! 43.Nab4–+) 43.Kf4 Kg7–+) 42.Ke2?? (better 42.e4 Qh5 43.Kf4 Bg5 44.Rg5 Qg5 45.Kf3 Qb5 46.Nab4–+) 42...Rg1 (42...Qb5 43.Kd1 Rg1 44.Qg1 Qb1 45.Ke2 Qg1 46.ef4 Qg2 47.Ke3 Qc6 48.Nb8 Qc1 49.Kf3 Qd1 50.Kg2 Qe2 51.Kg1 Bd4 52.Kh1 Qf2 53.Nc6 Qg1) 43.Qg1 f3 44.Ke1 (44.Kf2 Bh4 45.Qg3–+) 44...Bh4 45.Qf2 Bf2 (45...Qa2! 46.Nd4 Bf2 47.Kf1 Bg3 48.Nc2 Qb1 49.Ne1 Qe1) 46.Kf2–+ Qd2 (better 46...Qb5 47.Nd4 Qa6 48.Nf3 Qa2 49.Ke1–+) 47.Kf3 Qb4 (better 47...Qd5 48.Kf2 Qb5–+) 48.Ncb4+– Kg7 49.Nd5 (better 49.Nc7 Kf6 50.Na8+–) 49...Kg6 (49...ed5 50.Nc7+–) 50.Nf4 (better 50.Nb6 e5 51.Nd7+–) 50...Kf6 51.Ng2 (51.Nc7 Ke7+–) 51...Kf5 (51...Ke5 52.Ne1+–) 52.Nh4 (52.Nb8 Ke5 53.Nd7 Kd5 54.Nb6 Kc5+–) 52...Kf6 (52...Ke5 53.Ke2+–) 53.e4 Ke7 (53...h6 54.Kf4+–) 54.Ng2 f6 (54...Kf6 55.Ne3+–) 55.Ne3 Kf7 (55...Kd6+–) 56.Nf5 (56.Nc4!? h5+–) 56...Kg6 (56...ef5 57.ef5 Ke7+–) 57.Nd6 Kh6 (57...f5 58.e5+–) 58.Nf7 (58.Nf7 Kg6 59.Nd8+–; better 58.Nc7!? e5+–) 1–0. BeepBeepImAJeep (2470) – josechess1994 (2295), lichess.org, 2019.

12.Nbd2 Nd5 13.Be2 Bf6 14.Rc1 Qe7 (14...cd4 15.Rc8 Qc8 16.Nd4=) 15.Ne4 cd4 (15...Rfd8 16.Nf6 Qf6 17.Qd2+=) 16.Nf6+= N7f6 (16...Qf6 17.Qd4 Nc5 18.Qf6 Nf6 19.Bf6 gf6 20.Rc4=) 17.Nd4 (17.Qd4 Rfd8 18.Rc8 Rc8+=) 17...e5 18.Nc6 Bc6 19.bc6 Rfd8 20.Qb3 Qd6 (20...Ne4 21.Rfd1 Nc5 22.Qc4+=) 21.Bb5 (21.Rfd1 Qe7 22.Ba6+–) 21...a6? (better 21...e4+=) 22.Ba6+– Rc6 23.Ba3 (23.Be5 Qe5 24.Rc6 Ng4+–) 23...Qc7 (23...Qe6 24.Rc6 Qc6 25.Bc4+=) 24.Rc6 Qc6 25.Rc1 Qd7 26.h3 Ne4 27.Rd1 Qe6? (better 27...Nec3!? 28.Rd3 h6+– (28...Qa4? 29.Qc3 Qa6 30.e4+–)) 28.Bc4 (better 28.f3 Nef6 29.e4+–) 28...Nef6?? (better 28...Qf6 29.f3 Nec3+–) 29.Bb2 (29.e4 Rc8+–) 29...e4 (29...Rd7+–) 30.Bf6 Qf6 31.Rd5 Qa1 (31...Rc8 32.Rd7 Rf8 33.Qd1+–) 32.Kh2 Rd5 33.Bd5 Qe5 34.g3 h5 (34...Qf5 35.Qc2 g6 36.Be4+–) 35.Bf7 Kf8 36.Qe6 (36.Qe6 Qe6 37.Be6+–) 1–0. BeepBeepImAJeep (2630) – O_Dannyboy (2005), lichess.org, 2015.

12.Be2 cd4 13.Nd4 Nc5 14.Bf3 White fights for the Initiative Bf3 15.Qf3 Nd5 (15...Qd5 16.Nc6 Rfe8 17.Qe2+=) 16.Nc6+= Qc7 17.Nc3 (17.Be5 Bd6 18.Bd6 Qd6 19.Na7 Ra8+=) 17...Nc3= 18.Bc3 (worse 18.Ne7 Qe7 19.Bc3 Nb3–+) 18...Bf6? (better 18...Bd6 19.Qh5 f6+=) 19.Bf6+– gf6 20.Qf6 Nd7?? (20...Rfe8+–) 21.Ne7 1–0. RichardSommer (1945) – mikeret (1885), lichess.org, 2020.

12.Bd4 Rc8 13.Rc1 Ba3 (13...Ba3 14.Rc4 Nc5=). Van der Bosch – Van der Ley, corr Netherlands, 1991.

12.Nd4 c3 13.Bc3 Rc8 14.Bb2 Nc5 15.Bf3 Nd5 16.Nc4 Nd7 (16...Qc7 17.a5=) 17.Rc1+= N7f6 18.Ne5 (18.Qe2 a6+=) 18...Bc5 (18...Rc1!? 19.Qc1 Bd6+=) 19.Nec6+– Qd7 20.Na7 Ra8 21.Nac6 Bd4 (21...Qc7!?+–) 22.Qd4 (22.ed4?! Rfc8 23.Ne5 Qd8+–; 22.Nd4?! Rfc8+–) 22...Rfc8 (22...Bc6 23.Rc6 Rfd8 24.Qc4+–) 23.Ne5 (23.e4!? Nc7 24.Qd7 Nd7 25.Ne7 Kf8 26.Nc8 Rc8+–) 23...Qd8 24.h3 (24.e4 Nf4 25.Qe3 Rc1 26.Rc1 Ng6 27.Ng6 hg6+–) 24...Rc1 25.Rc1 Rc8 (25...h6 26.Nc6 Bc6 27.bc6+–) 26.Rd1 (26.Rc8 Qc8 27.Nc4 Qd7+–) 26...Rc2? (26...Qc7+–) 27.e4 Rb2 (27...Qf8 28.ed5 Bd5 29.Bd5 ed5 30.Re1+–) 28.Qb2 (28.Qb2 Ne4 29.Be4+–) 1–0. BeepBeepImAJeep – Crazy_Queen (1870), lichess.org, 2017.

12.Nd4 Bc5 13.Nc4 Bd4 (13...Rc8 14.Rc1=) 14.Bd4 (14.Qd4 Bd5+=) 14...Nc5 (14...Qe7 15.a5+=) 15.Bf3 (15.a5 Nfd7+–) 15...Bf3+= 16.Qf3 (worse 16.gf3 Qd5 17.Bf6 Qc4=+) 16...Qd5 17.Ne5 (17.Qe2 Qg5+=) 17...Qf3 18.gf3 Nd5 (18...Nb3 19.Rad1=) 19.Nc6 (19.Bc5 bc5 20.Rfc1 Rfc8+–) 19...f6? (better 19...Nb3 20.Rad1 a6=) 20.Bc5+– bc5 21.Rfc1 e5 (21...Kf7 22.Rc5 Rfc8 23.Rac1+–) 22.Rc5+– Nb6 23.Rd1 (better 23.Ne7 Kh8 24.a5+–) 23...Rac8?? (better 23...Na4 24.Ne7 Kh8+–) 24.Ne7+– Kf7 25.Nc8 Rc8 (25...Nc8 26.Rd7 Kg6 27.a5+–) 26.Rc8 Nc8 27.Rd7 Ke6 28.Rc7 Nb6 29.Ra7 h5 (29...Kd6+–) 30.Ra6 g5 31.Rb6 Kf5 Black plans g4 32.Rc6 g4 33.e4 Kf4 34.Rf6 Kg5 35.Rf5 Kh4 (35...Kh6 36.fg4 hg4 37.b6 Kh7 38.b7 Kh6 39.b8Q Kh7 40.Qc7 Kh6 41.Qf7 g3 42.Rh5) 36.Kg2 gf3 37.Kf3 Kh3 38.Rh5 1–0. BeepBeepImAJeep (2585) – Gaidabura_73 (1780), lichess.org, 2016.

12.Nd4 Rc8 13.Bc4 Nc5 14.Be2 Nfe4 15.Ne4 Be4 16.Bf3 Bf3 17.Qf3 Qd5 (better 17...Qc7!?=) 18.Nc6 (better 18.Qd5 ed5 19.Nf5+–) 18...Qf3?? (better 18...Qg5+–) 19.Ne7+– (19.gf3?! Rc6 20.bc6 Rc8+=) 19...Kh8 20.gf3 Rc7 21.Nc6 a6 (21...f6 22.Ba3+–) 22.Be5 Rcc8 (22...Rb7 23.ba6 Na6 24.Rfb1+–) 23.Bd6 Rfe8 24.Bc5 bc5 25.Rfc1 ab5 26.ab5 Rc7 27.Rc5 Rb8 (27...Rb7 28.Na5 Rbb8 29.Rb1+–) 28.Nb8 (28.b6 Rcc8 29.Nb8 Rc5+–) 28...Rc5 29.Ra8 h6 (29...Rg5 30.Kf1 h5 31.Nd7 Kh7+–) 30.Nd7 (30.Nd7 Kh7 31.Nf8 Kh8 32.Ne6 Kh7 33.Nc5 Kg6 34.b6 f5 35.b7 Kf6 36.Ra6 Kf7 37.b8Q f4 38.Qb3 Ke7 39.Qe6 Kd8 40.Qd7) 1–0. BeepBeepImAJeep (2550) – FredBarbier (1740), lichess.org, 2018.

13.Qc2 Rc8 14.Bc4?? Nc4 15.Nc4 Qd5–+.

13.Qc2 Rc8 14.Nc4 Qd5 15.e4 Ne4–+.

13.Qc2 Rc8 14.Ne6 fe6 15.Be5=.

13.Bc4 Nc4 14.Nc4 Qd5=.

13.Nc4?! Qd5 14.Bf3 Nf3 15.Qf3 Qc4 16.Qb7 Bd6 17.Rfc1+=.

13.Nc4?! Qd5 14.Bf3 Nf3 15.Qf3 Rfc8=.

13.Nc4?! Qd5 14.Bf3 Nf3 15.Qf3 Qf3 16.Nf3 Bf3 17.gf3 Nd5=.

11.Na3 cd4 12.Nd4 Nc5 13.Rc1 (13.Nf3 Rfd8 14.Be5 Bd6 15.Bf6 gf6+=) 13...g6 (13...Rfd8 14.cd5 Bd5 15.f4+=) 14.Nac2 (14.cd5 Nd5 15.Qc2 Rfd8=) 14...e5 (14...Na4 15.Ba1+=) 15.Nf3= Bd6 (15...Ng4 16.Nd2 (worse is 16.cd5 e4 17.d6 Bd6-/+) 16...Na4 17.Ba1=) 16.Na1 (16.Nb4 dc4 17.Bc4 Rad8=) 16...Rfe8 (16...Rfd8 17.cd5 Bd5 18.Bc4=) 17.Nb3 (17.cd5 Bd5 18.Bc4 Bc4 19.Rc4 a6=) 17...Nb3 (17...Na4!? 18.cd5 Nb2 19.Rc7 Nd1 20.Rb7 Nc3=) 18.Qb3= dc4 (18...d4 19.ed4 ed4 20.Bd4=) 19.Qc4 Qc4 20.Rc4 (20.Bc4 Bf3 21.gf3 Rad8=) 20...Bd5= 21.Rc3 (21.Rcc1 Rad8=) 21...e4 (21...Ne4 22.Rcc1=) 22.Nd4+= Rac8 (22...Be5 23.Rfc1+=) 23.Rfc1 (23.Nc6!?+/–) 23...Rc3+= 24.Rc3 (24.Bc3 Nd7+=) 24...Bc5 (24...Nd7 25.Bc4 Bc4 26.Rc4=) 25.Nb3 (25.Rc2 Rc8+=) 25...Nd7 (25...Bd6 26.h3=) 26.Nc5 Nc5 (26...bc5 27.Rc2=) 27.Ra3 (27.Ba3 Na4 28.Rc7 Ra8=) 27...Rc8 28.a5 (28.f3 Nd7 29.Bc3 f5=) 28...Nd7 (28...ba5!? 29.Kf1 a4+=) 29.ab6+= ab6 (29...Nb6 30.Bf1 Nc4 31.Bc4 Rc4 32.h4=) 30.Rc3 (30.Ra7 Nc5+=) 30...Rc3= 31.Bc3 h5 (31...f6 32.Bd4=) 32.h4 (32.Kf1 f6=) 32...f5 (32...f6 33.Bd4=) 33.Bd4 Kf7 34.f4 (better is 34.Kf1=) 34...Ke6-/+ 35.g3 (35.Kf2 Kd6=) 35...Bb3–+ 36.Kf1 (36.Kf2 Kd6–+) 36...Kd5 37.Ke1 Bc4 38.Bc4 (38.Bd1 Bb5 39.Kd2 Bc4–+) 38...Kc4 39.Kd2 Kb5 40.Kc3 Nb8 41.Kb3 Na6 42.Bb2 (42.Kc3 Nb4–+) 42...Nb4 (42...Nc5 43.Kc2–+) 43.Kc3 (43.Bd4 Nd3–+) 43...Nd3 44.Kb3 (44.Ba1–+) 44...Nb2 (44...Nb2 45.Kc3 Nd1 46.Kc2 Ne3 47.Kc3 Nf1–+) 0–1. Zimmer – Loetzbeier, (year?).

11.Qc2 Rac8 12.Nbd2 (12.cd5 Bd5 13.Rd1 Be4=) 12...Qb8 (12...cd4 13.Nd4 Nc5 14.cd5 Bd5 15.Rfd1+=) 13.Ra2 (13.a5 cd4 14.Bd4 dc4 15.Bc4 e5=) 13...Rfe8 (13...cd4 14.Nd4 dc4 15.Ba3+=) 14.Ne5 (14.a5 dc4 15.Nc4 cd4 16.Bd4 e5 17.Nfe5 Ne5 18.Be5 Rc4 19.Bb8 Rc2 20.Rc2 Rb8+=) 14...cd4+= 15.Nd7 Nd7 16.Bd4 Bf6 (16...Bd6 17.f4+=) 17.a5 (17.Bf6 Nf6 18.a5 dc4 19.Nc4 Bd5 20.ab6 ab6+=) 17...e5 (17...Bd4 18.ed4 dc4 19.Bc4+=) 18.Bb2 d4 (18...Nc5 19.Rfa1=) 19.Bf3 (19.Bd3 h6=) 19...Nc5 20.Ne4 (20.Qf5!?=) 20...Be4-/+ 21.Be4 g6 (better is 21...Ne4 22.Qe4 Rc4-/+) 22.Bc6 (22.Bd5 Red8+=) 22...Red8 Black plans d3 23.ab6 ab6 24.Ba3 (24.Bd5 Qc7+=) 24...d3 (24...Ne6 25.Qd3+=) 25.Qd1 (25.Qb1 Nb7+=) 25...Qd6 (25...Qa7!?+=) 26.Bd5+/– Bg5 (26...e4 27.f3+/–) 27.Bc5+– Rc5 28.Qd3 Kg7 29.Ra7 (29.Rfa1 Be7+–) 29...Rc7 30.Qa3 (30.Rfa1 Be7+–) 30...Ra7 (30...Be7 31.Qd6 Bd6 32.Rfa1+/–) 31.Qa7 Rd7 (31...Be7 32.Ra1+/–) 32.Qa2 (32.Qa6 Qb8 33.Qa2 Qc7+/–) 32...f5 (32...Be7 33.Qe2+/–) 33.Ra1 Bf6 (33...Be7 34.e4+/–) 34.Qa3 (34.e4 Bg5+–) 34...Qc7 (34...Qa3 35.Ra3 Be7 36.Ra8+/–) 35.Bc6 (35.Qa8 Bd8+/–) 35...Re7 (35...Rd2 36.Qc3 e4 37.Qd2 Ba1 38.f3 ef3 39.gf3+/–) 36.c5 (36.e4 fe4 37.Qe3 Rf7+–) 36...e4+/– 37.cb6 Qb6 38.Qd6 f4? (38...Re8 39.Ra6 Rd8 40.Rb6 Rd6 41.Rb7 Kf8 42.g4+–) 39.Ra6 (39.Ra8 Rf7 40.Qf4 Qc5+–) 39...Qc7? (better is 39...Ra7!? 40.Ra7 Qa7 41.Qd7 Qd7 42.Bd7 Bg5 43.ef4 Bf4+–) 40.Qc7 (40.Qf4?! Be5 41.Qg4 Bh2 42.Kh1 Bd6+–) 40...Rc7 41.ef4 Bd4 42.Ra4 (42.g3 e3 43.fe3 Be3 44.Kg2 Kf8+–) 42...Ra7 (42...Bc5 43.g3+–) 43.Ra7 Ba7 44.Kf1 (44.Be4!? Kf6+–) 44...e3 45.fe3 Be3 46.g3 Kf6 47.Ke2 Bg1 (47...Bb6 48.Kf3+–) 48.Kf3 g5 (48...Ke6 49.h4+–) 49.fg5 (49.h4 gf4 50.gf4 h6+–) 49...Kg5 50.h3 h6 51.h4 Kf6 52.g4 Ke6 (52...Bb6 53.Kf4 Bc7 54.Ke4+–) 53.Be4 (53.Kf4!? Bh2 54.Ke4 Bg3+–) 53...Kf6 54.Bf5 Ke5 55.Bc8 (55.Bd3 Kf6+–) 55...Kf6 56.Ke2 (56.Kf4 Bh2 57.Ke4 Bc7+–) 56...Ke5 (56...Bb6 57.Kd3+–) 57.Bd7 (better is 57.g5!? hg5 58.hg5 Kd6+–) 57...Kd6 (57...Kf6+–) 58.Bc8?? (better is 58.Be8 Ke7 59.Bg6+–) 58...Ke5 59.Kf3 (59.g5 hg5 60.hg5 Bb6+–) 59...Kf6 60.Kf4 White intends g5 60...Bh2 61.Ke4 Bg1 62.Bd7 (62.Kd5 Bf2+–) 62...Ke7 (62...Bf2 63.h5+–) 63.g5 (63.Bf5!? Kf6+–) 63...hg5 64.h5 (64.hg5 Kd7 65.Ke5 Ke7+=) 64...Kf6 65.Bf5 Kg7 66.Kd5 Kh6 67.Bg4 Kg7 (67...Bb6 68.Bf3+–) 68.Kc6 ½–½. Wolf,Harald – Gleis,Wolfgang, Regensburg–ch, 1995.

11.Qc2 cd4 12.Nd4 Rfc8 13.Rc1=.

11.Qc2 cd4 12.Nd4 Bd6 13.f4=+.

11.Nc3 Rfc8=+.

11.dc5 Qc5?? 12.Ba3 Qc7 13.Be7+–.

11.dc5 Nc5 12.Be5 Bd6 13.Bf6 gf6=.

11.Nbd2 Rac8 12.Rc1 Qb8 13.h3 Rfd8 14.cd5 ed5 (14...Bd5 15.Bc4=) 15.dc5 Nc5 (15...bc5 16.a5=) 16.Nd4 Nce4 17.Ne4 (17.Rc8 Rc8 18.Nf5 Qc7+=) 17...Ne4 (17...de4 18.Bc4 Ne8 19.Qh5+–) 18.Bf3 (18.Nf5 Bf8+=) 18...Bf6 (18...Rc1 19.Qc1 Bd6 20.Qd1+=) 19.Rc8 Qc8 20.Qc1 (20.Qd3 Nc5 21.Qc2 Ne6+=) 20...Qd7 (20...Be5 21.Qa1+=) 21.Rd1+= Rc8 22.Qa1 h6? (better 22...Qe8+–) 23.Bg4+– Qd8 24.Bc8 Qc8 25.Nf3 (25.a5 ba5 26.Qa5 Qb8+–) 25...Bb2? (25...Qc2 26.Bf6 Qf2 27.Kh1 gf6=) 26.Qb2+– Nc3 27.Rd2 (27.Ra1 Ne4+–) 27...Ne4 (27...Na4 28.Qa1 Nc5 29.Qa7+–) 28.Rc2 Qf5 (28...Qd8 29.Qe5 Nd6 30.Qd4+–) 29.Qd4 (29.Rc7 Nc5+–) 29...Kh7 (29...Ng5 30.Ne1+–) 30.Rc1 (30.Rc7 Nc5 31.Qh4 f6+–) 30...Qg6 (30...Nc5 31.Qd1+–) 31.Rd1 (31.Rc7 Nc5+–) 31...Nf6 32.Ne5 Qh5 (32...Qf5 33.Nc6 Bc6 34.bc6+–) 33.Ng4 (better 33.Rc1!? Ne8+–) 33...Ng4 34.Qg4 Qe5 (34...Qg4 35.hg4 Bc8 36.Rd5+–) 35.Qd4 (better 35.Qd7!? Qb8 36.Rc1 d4 37.Qf7 Be4+–) 35...Qg5 (35...Qc7 36.a5+–) 36.f4 (better 36.Rc1 Qd8+–) 36...Qg3? (36...Qe7 37.Rc1 Qd8 38.a5 ba5 39.Qa7+–) 37.Rf1 (better 37.Rc1!? a6 38.Rc7 Ba8 39.Rf7 h5+–) 37...Qg6 (37...Bc8 38.Rf3 Qe1 39.Kh2+–) 38.f5 (38.Rc1!? Qd6 39.Qe5 Qe5 40.fe5 d4 41.ed4 Kg6+–) 38...Qd6 39.f6 g6 40.Rc1 h5 41.e4 Qf4 42.Re1 (better 42.Rd1 Qd6+–) 42...de4 (42...Ba8+–) 43.Qd7 Qg3 (43...Qf6 44.Qb7 Qd4 45.Kh2 Qd6 46.Kh1 Kg7+–) 44.Qf7 Kh6 45.Rf1 (45.Qb7?! Qe1 46.Kh2 h4=) 45...Qe3 46.Kh1 (46.Kh2 h4 47.Qb7 Qg3 48.Kh1+–) 46...Ba8 (46...Qe2 47.Rg1 Bd5 48.Qd5 Qf2+–) 47.Qg7 (47.h4 Qh3 48.gh3 e3 49.Kg1 a6 50.Qg7) 47...Kg5 48.f7 Qe2 (48...Qg3 49.Qf6 Kh6 50.f8Q Kh7 51.Q8g7) 49.f8Q (49.Qf6 Kh6 50.f8Q Kh7 51.Q8g7) 49...e3 (49...Qg2 50.Kg2 e3 51.Kh2 Bd5 52.Qff6) 50.Qff6 1–0. BeepBeepImAJeep (2585) – helloimnew (2400), lichess.org, 2016.

11.Nbd2 Rac8 12.Rc1 Rfd8 13.Qb3 dc4 (13...cd4 14.ed4 dc4 15.Nc4=+) 14.Bc4= Bd6 15.Be6 (better 15.Rfd1!?=) 15...fe6-/+ 16.Qe6 Kh8 17.Nc4 Nf8 18.Qh3 Bf3 19.gf3 Qd7 (19...Nd5!?-/+) 20.Qd7=+ Rd7 (20...N8d7?? 21.Nd6 Kg8 22.Nc8 Rc8 23.Rfd1+-) 21.f4 cd4 (better 21...Kg8!?-/+) 22.Nd6= Rc1 23.Rc1 Rd6 24.Rc8 N6d7 25.Bd4 Kg8 26.Ra8 Rg6 27.Kf1 Kf7 (27...Rh6!?=) 28.Ra7+= Rh6 29.Rc7 Rh2 (29...Kg8 30.Kg2+=) 30.Bb6+/- Rh1 31.Ke2 Rb1 (31...Ke8 32.Ba5+/-) 32.Bd4 Ke6? (better 32...g6!?+/-) 33.Bg7+- Rb4 34.f5! Kf5 (34...Kd6 35.Ra7+-) 35.Bf8 Nf8 36.Rf7 Kg6 37.Rf8 Ra4 38.b6 Rb4 39.Rb8 Rb2 40.Kf3 Kg7 41.b7 Rb4 42.Kg3 (42.e4 h5+-) 42...h5 (42...Rb3 43.Kg4+-) 43.f4 Rb3 44.Kh4 Rb5 45.e4 1-0. onur604 (2320) - Jaroluk (2285), Casual Rapid game, lichess.org, 2021.

11.Nbd2 Rac8 12.Rc1 Rfd8 13.h3 Qb8 14.Qb3 Qa8 (14...cd4 15.Bd4 e5 16.Bb2=+) 15.a5 (15.Ba3 Bd6=) 15...dc4 (15...ba5 16.Qa3=+) 16.Nc4= cd4 17.Bd4 White fights for the Initiative. . 17...Nc5 18.Qa2 Bd5 (18...ba5 19.Qa3= (worse 19.Qa5 Nb3 20.Qa2 Nc1 21.Rc1 a6 22.ba6 Qa6–+; 19.Na5?! Bd5 20.Qa1 a6=)) 19.ab6+= Bc4 20.Bc4 ab6 21.Ne5 Qa2 22.Ba2 Nfe4 (22...Kf8 23.Rfd1+=) 23.Nc6 Re8 24.Rfd1 Ra8 25.Bc4 Ra4?? (better 25...Kf8+–) 26.Ne7+– Re7 (26...Kf8 27.Nc6 f6 28.f3+–) 27.Bc5 Nc5 (27...Re8 28.Bb6 Nf6+–) 28.Rd8 (28.Rd8 Re8 29.Re8) 1–0. BeepBeepImAJeep (2765) – StarThanatos (2150), lichess.org, 2015.

11.Nbd2 cd4 12.Bd4 e5 13.Bb2=.

11.Nbd2 cd4 12.Nd4 Nc5 13.cd5 Bd5 (13...Nd5 14.Rc1+=) 14.Bf3 (14.Qe1 Rfd8=) 14...Nd3 (14...Rfd8 15.Qc2+=) 15.Bd5 (15.Qb1 Nb2 16.Qb2 Rfd8=) 15...Nd5 16.Ba3 (16.Qb1 Nb2 17.Rc1 Qd7 18.Qb2 Rac8=) 16...Ne5 (16...Ba3!? 17.Ra3 Ne5=) 17.Rc1+= Qd7 18.Be7 Qe7 19.Qb3 (19.N2f3 Nf3 20.Qf3 Qb4=) 19...Rac8 (19...Rfc8 20.N2f3 Nf3 21.Nf3=) 20.f4 (20.N2f3 Nf3 21.Nf3 Rfd8=) 20...Rc1+= 21.Rc1 Ng4 22.Nc6?? (better is 22.Nf1+=) 22...Qh4–+ 23.Nf1 Qf2 24.Kh1 Nde3 (24...Nde3 25.Ne3 Qf4–+ (25...Qe3?! 26.Qe3 Ne3 27.Na7=; 25...Ne3?! 26.Rg1–+)) 0–1. Huelle,Gunter – Petzel,Oliver (1655), Leipzig VfB op, 2004.

11.Nbd2 Bd6 12.Rc1 a6 13.dc5 bc5 14.h3 ab5 15.ab5 Ne4 (15...Rfd8 16.Qc2=) 16.Ne4 de4 17.Nd2 f5 (17...Ra2 18.Qb3 Rfa8 19.Ra1 Ra1 20.Ra1 Ra1 21.Ba1+=) 18.Qc2 Ne5 19.Ra1 Rad8 20.Bc3 Qe7 21.Rfd1 Nd3 22.g3 (22.Nb3 Bb8+=) 22...Qg5 23.Nf1 (better is 23.h4 Qg6 24.Nf1= (24.Bd3 ed3 25.Qb3 Bg3–+)) 23...Nf2? (better is 23...Rf7=) 24.h4 (24.Kf2 Bg3 25.Ng3 f4+–) 24...Qg6 25.Rd6 Nh3 (25...Rd6 26.Kf2) 26.Kh2 Rd6 27.Kh3 Rd7 28.Rd1 Qf7 29.Rd7 Qd7 30.Be5 Qe7 31.Nd2 Rc8 32.Nb3 Kf7 (32...Rd8 33.Kh2+/–) 33.Qd2 (33...Ke8 34.Qd6+–) 1–0. Wolf – Tiemann, Privatpartie, 1998.

11.Nbd2 Bd6 12.h3 Rfd8 13.cd5 Nd5 14.a5 ba5 15.Nc4 a4 16.Nd6+= Qd6 17.Qa4 N7b6 18.Qc2 Nb4 19.Qc5+– N4d5 20.Qd6 Rd6 21.Nd2 h6 22.Ne4 Rdd8 23.Nc5 Bc8 24.Ra5 Nd7 25.Rfa1 Nc5 26.dc5 a6 27.c6 Nb6 28.Kf1 f6 29.Bd4 Nd5 30.b6 (30.b6 Nb4 31.c7+–) 1–0. pierre – u_b_c, ChessHere.com, 2005.

11.Nbd2 Rad8 12.Rc1 Qb8 13.Qc2 dc4 (13...Rc8 14.dc5 Nc5 15.Be5=) 14.Qc4 (14.Nc4 Bd5+=) 14...Bd5= 15.Qd3 cd4 16.Qd4 Bc5 (16...Nc5 17.Qh4=) 17.Qh4+= Be7 18.e4 (18.Nc4 Nc5=) 18...Ba8 (18...Bb7 19.Rfd1=) 19.e5 Nd5 20.Qg3 Nc5 21.Rc4 Nc7 (21...f5 22.Rfc1=) 22.Nd4 (22.h4 f5+=) 22...Nd5 23.f4 Rd7 (better is 23...h6!?+=) 24.f5+– ef5 (24...Rc8 25.Bh5 Bf8 26.fe6 fe6 27.Rf2+/–) 25.Nf5 Ne6 26.Nh6 (better is 26.Ne4!? Kh8 27.Ne7 Ne7 28.Nd6+–) 26...Kh8+/– 27.Nf7 Kg8 (27...Rf7 28.Rf7 Bc5 29.Rc5 Rf7 30.Rc2+/–) 28.Nh6 (28.Bg4 Ndf4 29.Nd6 Rd6 30.ed6 Bd6 31.Rff4 Nf4 32.Rf4 Qb7 33.Be6 Kh8 34.Rf8 Bf8+–) 28...Kh8+/– 29.Nf7 Kg8 30.Nd6! Rf1 (30...Bd6 31.Rf8 Double attack (31.Rf8 Decoy; 31.ed6 Passed pawn)) 31.Nf1+– Bd6 (31...Rd6 32.ed6 Bd6 33.Qg4+–) 32.ed6 Qf8 33.Bg4 (better is 33.Qe5 Nc5 34.Rg4+–) 33...Qf7?? (better is 33...Ndf4+–) 34.Be6 Qe6 35.Rc8 Kf7 (35...Qe8 36.Re8 Kf7 37.Qg7 Ke8 38.Qg8) 36.Qg7 1–0. DEFFM – Shannes, freechess.org, 2018.

11.Nbd2 Rfd8 12.a5 Rac8 13.a6 Ba8 14.Rc1 Ne4 15.cd5 Bd5 16.Ne4 Be4 17.Nd2 Bg6 18.Qb3 Qb8 19.g3 cd4 20.ed4 Nf6 21.Bf3 Qd6 (21...Bf5!?=) 22.Nc4+= Qb4 (22...Qb8 23.Bb7 Rc7 24.Ne5+/-) 23.Qb4 Bb4 24.Bb7 Rc7 (better 24...Rb8!? 25.Ne5 Bd6+/-) 25.Ne5+- Rc1 26.Rc1 Be4 27.Be4 Ne4 28.Nc6 (28.Nc6 Bd2 29.Nd8 Bc1 30.Bc1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

11.Nbd2 Rfd8 12.Qb3 Bd6 13.h3 (13.Ba3 e5 14.a5 e4-/+) 13...Re8 (13...cd4 14.ed4 dc4 15.Bc4+=) 14.a5= dc4 15.Bc4 (15.Nc4 Bd5=) 15...cd4 16.ed4 (16.Bd4 Nc5 17.Qc3 Nce4 18.Ne4 Ne4=) 16...ba5+= 17.Bc3 (17.Rfc1 Qd8+=) 17...Bb4 (17...a4!? 18.Ra4 Nb6+=) 18.Bb4= ab4 19.Qb4 Qf4 20.Rfe1 Nb6 21.Bd3 Rec8 22.Qb2 Bd5 23.Ra6 Rc7 24.Rea1 Nfd7 25.g3 Qf6 26.Ne5 Qh6 27.Kh2 f5 (27...Nb8 28.R6a3=) 28.Nc6 (28.Ndf3 Qf6+=) 28...Nf6= 29.Bf1 (29.Ra7 Rca7 30.Ra7 Ra7 31.Na7 Ng4 32.Kg1 Qh3–+) 29...f4 (29...Bc6 30.bc6 Nfd5 31.Bb5+=) 30.Qc3 (30.Rb6 fg3 31.Kg1 gf2 32.Kf2 Ne4 33.Ne4 Rf8 34.Ke2 Bc4 35.Kd1 Rf1 36.Kc2 Bd3 37.Kd3 Rf3 38.Kc4 ab6 39.Ra8 Kf7 40.Nd6 Kg6 41.Qg2 Qg5 42.Qf3 Qc1 43.Qc3 Qc3 44.Kc3+–) 30...fg3 31.fg3 Ng4 (31...Rf8 32.Ra7 Ra7 33.Na7–+) 32.Kg1= Rf8 33.Re1 (33.Ra7 Qf6 34.Nf3 Ra7 35.Na7-/+) 33...Rf1!–+ 34.Kf1 (34.Nf1 Qh3) 34...Qh3 35.Ke2 Qg2 (better is 35...Bc6!? 36.bc6 Qg2 37.Kd1 Nf2 38.Kc2 Rc6 39.Ra3–+) 36.Kd1 Nf2 37.Kc1 Bc6 (37...Bc6 38.Rb6 ab6–+) 0–1. Mueller,Klaus – Meier,K, corr ICCF EU–M–703, 1987.

11.Nbd2 Rfd8 12.Rc1 Bd6=.

11.Nbd2 Ne4 12.Rc1 Nd2 13.Qd2 Bf6 (13...Rad8 14.cd5 Bd5 15.Qc2=) 14.Bd3 (14.cd5 ed5 15.a5 Rae8+=) 14...dc4 15.Rc4 Bd5 16.Rcc1 Qb7 17.Qe2 Rac8? (better 17...Bf3 18.gf3 Rac8=) 18.e4+– (18.e4 Ba2 19.Ba3+–) 1–0. GuestNTFH – GuestXPBB, freechess.org, 2020.

11.Nbd2 Ne4 12.cd5 A) 12...ed5 13.Rc1 (13.Qc2 Nd2 14.Qd2 c4 15.Ba3 Ba3 16.Ra3 a6 17.ba6 Ra6 18.Qc2=; 13.dc5 bc5 14.Qc2 Rac8 15.Rfd1 Bd6 16.a5 Ndf6 17.Bf6 Nf6 18.Rdb1=; 13.a5 Rac8 14.ab6 ab6 15.dc5 bc5 16.Qc2 c4 17.Bd4 Nd2 18.Qd2+=) 13...a6 14.dc5 bc5 15.Qc2 ab5 16.Bb5 Rfc8 17.Ne4 de4 18.Rfd1+=; B) 12...Bd5 13.Ne4 (13.Rc1 Bd6 14.Nc4 Rfd8 15.Qc2 Rac8 16.Bd3 f5 17.Rfd1 Be7 18.Nfe5=; 13.dc5 Nd2 14.Qd2 Nc5 15.Rfc1 Rad8 16.Qb4 Qd7 17.Qg4 f6 18.Rd1=; 13.a5 ba5 14.Ne4 Be4 15.Qd2 Rfc8 16.Rfc1 Bd6 17.Qa5 Qb7 18.Qc3=) 13...Be4 14.Nd2 Bb7 15.Bd3 Rac8 16.Rc1 f5 17.Bc4 Bd5 18.dc5=; C) 12...Nd2 13.Nd2 (13.Qd2 Bd5 14.a5 Rac8 15.Rfc1 Bd6 16.ab6 ab6 17.dc5 Nc5 18.Qd4=) 13...Bd6 14.de6 Bh2 15.Kh1 fe6 16.Bc4 Rf6 17.Qh5 Bd6 18.dc5=.

11.Nbd2 Ne4 12.Ne4 de4 13.Ne5 (13.Nd2 cd4 14.ed4 a6 15.ba6 Ra6 16.Ba3 Ba3 17.Ra3 Rfa8 18.Re1+=; 13.Ne1 cd4 14.Qd4 Bf6 15.Qd2 Rfd8 16.Bf6 Nf6 17.Qc3 Rd7 18.Nc2+=) 13...f5 (better is 13...Rad8 14.Nd7 (14.f4 ef3 15.Nf3 cd4 16.ed4 Bd6 17.h3 Ne5 18.Ne5=) 14...Rd7= 15.a5 Bd6 16.h3 Be5 17.Qd2 cd4 18.ed4=; 13...Rfd8 14.f4 ef3 15.Nf3 Bd6 16.d5 Ne5 17.h3 ed5 18.cd5=) 14.Nd7+/– Qd7 15.dc5 Qd1 16.Rfd1 Bc5 17.Rd7 (17.a5 h6 18.Bd4+/–) 17...Rf7 18.Rad1 Bc8 19.Rd8 Rf8 20.Rf8 Kf8 (20...Bf8!? 21.Bd4 Kf7+/–) 21.Rd8+– Kf7 22.Bh5 (better is 22.Rh8!? g6 23.Rh7 Ke8 24.Bd4+–) 22...g6+/– 23.Be2 Bf8 24.Be5 Bg7 25.Bc7 Bf6 26.Rd1 Be7 27.a5 ba5 28.Ba5 Bc5 29.g3 Ke7 30.Bd8 Ke8 31.Bf6 Bd7 (31...a5!?+=) 32.Bd4+/– Rc8 33.Bc5 (33.h4 h6+/–) 33...Rc5+= 34.Ra1 Rc7 35.Kf1 Ke7 36.Ke1 Kd6 37.Kd2 Kc5 38.Ra4 e5 39.Ra6 Bc8 40.Rf6 Bb7? (better is 40...a6!?=) 41.h4 (better is 41.Re6!?+/–) 41...Bc8+= 0–1. Kamaletdinov,Farit (1945) – Belorechensky,Boris V (1995), 2012.

11.Nbd2 e5 12.de5+– Ne5?? (better 12...Ng4 13.Qb3 d4 14.ed4 cd4 15.Nd4 Nge5+–) 13.Be5+– Bd6 (13...Qd8 14.a5+–) 14.Bd6 (14.Bf6!? gf6 15.cd5 Bd5+–) 14...Qd6 15.cd5 Nd5 16.Nc4 Qd7 (16...Qf6 17.Qc2+–) 17.Rc1 (better 17.e4!? Nf6 18.Qd7 Nd7+–) 17...Rad8 18.Qb3 Nb4 19.Rfd1 Qe7 20.Nce5 Ba8 21.Bc4 Rd1 22.Rd1 Bf3 23.Nf3 (23.gf3?! Qe5 24.Bf7 Kh8+–) 23...g6 24.h3 (24.Qc3 Re8+–) 24...h5 (24...Re8 25.e4+–) 25.Rd2 Kg7 26.Qd1 Qe4 (26...h4 27.Rd7 Qf6 28.Ra7+–) 27.Bb3 (27.Bf7 Qf5 28.Bc4 Kh6+–) 27...c4 (27...Qf5 28.Rd7 a6 29.Qa1 Qf6 30.Ne5 ab5 31.ab5+–) 28.Rd4 Qe6 (28...Qf5 29.Bc4 Qc2 30.Qa1+–) 29.Bc4 (29.Bc4 Qc8 30.Qd2+–; better 29.Rc4 Qe7 30.Qd4 f6 31.Rb4 Rd8+–) 1–0. BeepBeepImAJeep (2545) – zdiegol (1775), lichess.org, 2016.

11.Nbd2 Rfe8 12.Rc1 h6 (12...a6 13.dc5 Nc5 14.Be5=) 13.Qb3 (13.cd5 Bd5 14.dc5 Nc5=) 13...Rac8 (13...a6 14.ba6 Ba6 15.Bd3=) 14.Rfd1 (14.Bd3 dc4 15.Nc4 Bf3 16.gf3 cd4 17.Bd4 Nc5=) 14...Rb8 (14...a6 15.Qd3+=) 15.h3 (15.Qd3 Bd6+=) 15...h5 (15...Bd6 16.Qd3=) 16.Ne5 (16.Qd3 Bd6+=) 16...g6 (16...Ne5 17.de5 Nd7 18.Qc3+=) 17.Ndf3 Ne4 18.Nd7 Qd7 19.Ne5 Qc7 20.cd5 Bd5 21.Qc2 (21.Bc4 Rbd8+/–) 21...Qb7 (21...Rec8 22.dc5 Qc5 23.Qd3=) 22.Bd3 cd4 23.Nc6 Nc5 24.Bg6 fg6 25.Qg6 (25...Kf8 26.Nb8 Rb8 27.Rd4+–; 25.Nb8 Be4 26.Qc4 Rb8 27.Qd4 Bf8+=) 1–0. Schwertel,Gottfried – Friberger,Torbjoern, corr 3GMM–38, 1995.

11.Nbd2 Rfe8 12.Qc2 h6 13.Rfc1 Qd6 14.Ne5 Qc7 15.Ndf3 Rac8 16.Nd7 Qd7 17.Ne5 Qd8 18.Nc6 Bc6 19.bc6 Rc6 20.cd5+= Nd5 21.Bb5 Qc8 22.Bc6 Qc6 23.a5 Qb7 24.ab6 ab6 25.dc5 Bc5 26.Qe4 Qe7 27.Qg4 f6 28.Bd4 Bd4 29.Qd4 Rb8 30.e4 Nc7 31.Ra7 Rc8 1–0. pumpkin (2275) – gregorgysi (2340), net–chess.com, 2011.

11.dc5 Nc5 12.cd5 Nd5 13.Na3 Bf6 14.Bf6 Qf6 15.Nc4 Rcd8 16.Qc2 h6 17.Nfe5 Ba8 18.a5 Qg5 19.Nc6 Nb4 20.Qb1 Nc6 21.bc6 Bc6 22.ab6 Qg2 0–1. Abdullaevich (1810) – armelgabel (1795), lichess.org, 2018.

11.dc5 Nc5+= 12.cd5 Nd5 13.Bd4 Bf6+=.

11.dc5 Nc5+= 12.Ne5 dc4 (12...Qc7 13.Nd2+=) 13.Bc4 Opening the d–file gets Black a lot of play (13.Nc4 Qd5 14.Qd5 Bd5=) 13...Qd1 (13...Qc7 14.Qe1+=) 14.Rd1= Rfd8 15.Nd2 (15.Rd8 Bd8 16.Nd2 Bc7=) 15...Nd5 (15...Nfd7 16.Nd7 Rd7 17.Bd4=) 16.Ndf3 (16.a5 f6 17.Nef3 ba5 18.Ra5 Nb6=) 16...f6 17.Nd3 Kf7 (17...Nd3 18.Bd3 Nc3 19.Bc3 Rc3 20.Be2=) 18.a5 (18.Nc5 bc5 19.a5 Rb8=) 18...Nd3 (18...ba5 A) worse is 19.Ra5 Nb6 20.Be6 Ne6–+ (20...Ke6?! 21.Nd4 Kf7 22.Nc5 Bc5 23.Ra7-/+); B) 19.Nd4 Nd3 20.Bd3-/+) 19.Bd3 Nb4 20.Ne1 (20.Bh7 Rd1 21.Rd1 ba5=) 20...Nd3-/+ 21.Rd3 ba5 (21...Rd3 22.Nd3 Rd8 23.Ne1+=) 22.Ra5 Bc5 (22...Rd3 23.Nd3 Rd8 24.Ne1-/+ (24.Ra7? Rd3 25.f3 Bc8–+)) 23.Rd8= Rd8 24.Bd4 Bd4 (24...Bb6 25.Bb6 ab6 26.Ra7=) 25.ed4 Rd4 26.Ra7 Rd7 27.b6 (27.f3 Ke7=) 27...Ke7 28.f3 (28.Nd3!=) 28...Kd6-/+ 29.Ra2 (29.Ra3 Kc5-/+) 29...Bd5 (29...Kc5 30.Rb2-/+) 30.Rb2 Rb7 31.Nd3 Bc4 32.Nf4 Kc5 (32...g6 33.Nh3-/+) 33.Kf2 (33.Nh5 Bb5-/+ (33...Rb6?! 34.Rb6 Kb6 35.Ng7=)) 33...g6 (33...Rb6?! 34.Rb6 Kb6 35.Nh5=) 34.h4 (34.Ne2 Be2 35.Re2 Rb6-/+) 34...Rb6 (34...e5 35.Ne2 Rb6 36.Rb6 Kb6 37.Nc3-/+) 35.Rd2 (35.Rb6 Kb6 36.h5 g5-/+) 35...Rd6 36.Rb2 (36.Rd6 Kd6 37.h5 g5-/+) 36...e5–+ 37.Nh3 (37.Ne2 Rd3–+) 37...Rb6 (37...Be6 38.Kg3–+) 38.Rd2 (38.Rb6 Kb6 39.Ke3 f5-/+) 38...Bd5 (38...Rb3 39.Kg3–+) 39.Ng1 (39.Ke2 f5–+) 39...Ra6 (39...Rb4 40.Kg3–+) 40.Ne2-/+ Ra2 41.Ra2 Ba2 42.Nc3 Bc4 (42...Bd5 43.Ke3-/+) 43.Nd1? (better is 43.Ne4 Kd4 44.Nf6=) 43...Kd4–+ 44.Ne3 Bb3 (44...Be6 45.g3–+) 45.Ng4 (45.g4 Kd3-/+) 45...f5–+ 46.Nf6 h6 47.g4 (47.g3 Be6–+) 47...fg4 (47...e4!? 48.fe4 fe4 49.Ke1–+) 48.Ng4-/+ h5 49.Ne3 (49.Nf6 Bc2-/+) 49...Kd3 50.Nf1 Be6 51.Ne3 Bf5 52.Nd5 Kd2 (52...Kd4 53.Nf6-/+) 53.Ne3 (53.Kg3 Bb1-/+) 53...Be6 (53...Kc3!?-/+) 54.Nf1+= Kd3 (54...Kc3+=) 55.Ne3-/+ e4 (55...Kd4 56.Nc2 Kc5 57.Ke3-/+) 56.fe4 (56.Ng2 Kd4-/+) 56...Ke4 57.Ng2 Bh3 58.Ne1 Kf4 59.Nf3? (better is 59.Nd3!? Kg4 60.Ne5 Kf5 61.Nd3-/+) 59...Bc8–+ 60.Nh2 (60.Nd2 Ba6–+) 60...Bb7 61.Nf1 Kg4 62.Ng3 (62.Nd2 Kh4 63.Nb3 Kg4–+) 62...Kh4 63.Ne2 Kg4 (63...g5 64.Nc1–+) 64.Nd4 h4 65.Nc2 g5 66.Ne3 (66.Nd4 Bd5–+) 66...Kf4 67.Nf1 g4 68.Kg1 g3 69.Nd2 h3 (69...Ba6!? 70.Nf1 Bf1 71.Kf1–+) 70.Nf1 Kg4 (70...Bc8!? 71.Nh2–+) 71.Ne3 Kf3 72.Ng2 Ke4 (72...h2 73.Kh1 Bc6 74.Ne1 Kf2 75.Ng2 Bg2) 73.Ne1 (73.Kf1 h2 74.Ke2 h1Q 75.Kd2 Qg2 76.Kc3 Qe2 77.Kb4 g2 78.Kc5 g1Q 79.Kd6 Qeh2 80.Kd7 Qg7 81.Ke6 Bd5) 73...h2 74.Kh1 Bc8 (74...Ke3 75.Ng2 Kf3 76.Ne1 Kf2 77.Ng2 Bg2) 75.Nf3–+ Bh3 (75...Kf4 76.Nh2 Bh3 77.Kg1–+) 76.Nh2?? (better is 76.Ng5 Ke3 77.Nh3=) 76...g2 (better is 76...Kf4 77.Kg1 Ke3–+ (77...gh2?! 78.Kh2=)) 77.Kg1= Ke3 78.Ng4 Ke2 (78...Kf3 79.Ne5 Kg3 80.Nd3=) ½–½. Spiegel,Matthias – Sack,Reinhard, Germany, 2000.

11.Nbd2 dc4 12.Bc4 Bd5 13.Bd5 Nd5 14.Qb3 Bf6 15.Ne5 Be5 16.de5 Kh8 17.Nc4 Rc7 18.Rad1 Qh4 19.g3 Qh3 20.e4 Nf4 21.Ne3 (21.Qf3 Ng6+=) 21...Ne2= 22.Kh1 Nd4 23.Bd4 cd4 24.Qb4?? (better is 24.Rd4 Ne5 25.Qd1+=) 24…de3–+ (24...de3 25.Qb2 Rfc8–+) 0–1. Bouvier,Clement (1725) – Cheymol,Eric (2165), Montigny le Bretonneux Noel op, 2008.

11.Nbd2 dc4 12.Nc4 cd4 13.Qd4 Nc5 14.Nce5 (14.Rfd1 Qc7 15.Qe5 Bf3 16.gf3 Rfd8=) 14...Qd4 (14...Nb3 15.Qd8 Rfd8 16.Rad1=+) 15.Bd4 (15.Nd4 Nd5=) 15...Nd5 16.a5 f6 17.Nc6 (17.Nc4!?=) 17...Bc6-/+ 18.bc6 Rc6 19.ab6 ab6 20.Ra7 e5?? (20...Rfc8 21.Rc1-/+) 21.Bb2?? (better 21.Bc4 Rd8 22.Bc5 Rc5 23.Bd5 Rcd5 24.Re7+–) 21...Bd6?? (better 21...Rc7 22.Rfa1 Ra7 23.Ra7 Rd8-/+) 22.Bc4+– Kh8 23.Bd5 Nd3? (23...Rc7 24.Rc7 Bc7+–) 24.Bc6 Nb2 25.Bb5 h5 (25...e4 26.Rd7 Bc5 27.Nd2+–) 26.Rb1 Na4 (26...e4 27.Nh4 Nd3 28.Rd7 Bh2 29.Kh2+–) 27.Ra4 Rc8 (27...Bc5 28.Bd3 g5 29.Ra7+–) 28.g4 hg4 29.Rg4 e4 (29...g5 30.h4 Rd8 31.hg5+–) 30.Re4 Kh7 (30...g5 31.h4+–) 31.Bc4 (31.Bd3 Kg8 32.Rb6 Rc1 33.Kg2 Be5+–) 31...Kg6 (31...Bc5 32.Rh4 Kg6 33.Kh1+–) 32.Rd1 (32.Rb6 Bc7 33.Rg4 Kh5 34.Rh4 Kg6 35.Bd3 Kf7+–) 32...Bb8 (32...b5 33.Nh4 Kh7 34.Be6+–) 33.Be6 (better 33.Rd7 Rc4 34.Rc4+–) 33...Rh8 (33...f5 34.Nh4 Kf6 35.Bf5 Rc6+–) 34.Rg4 Kh7 35.Rh4 (35.Rd7 f5 36.Rdg7 Kh6 37.R7g6 Kh7 38.Bf5 Bh2 39.Kh2 b5 40.Ng5) 35...Kg6+– 36.Rh8 f5 37.Rf8 Be5 (37...Kh5 38.Bf5 Bf4 39.ef4 b5 40.Rh8) 38.Ne5 (38.Bf5 Kh5 39.Rh8) 38...Kg5 (38...Kh6 39.f4 g5 40.Rh8 Kg7 41.Rd7 Kh8 42.Ng6) 39.f4 Kh4 (39...Kh5 40.Rh8) 40.Rh8 1–0. BeepBeepImAJeep (2670) – kimhana (1800), lichess.org, 2017.

11.Nbd2 dc4 12.Nc4 cd4 13.Nd4 Nc5 14.Rc1 Nd5 15.Bf3 Bf6 16.Ba1 (16.e4 Nb4 17.e5 Bg5 18.Bb7 Bc1 19.Bc8 Bb2 20.Nb2 Qc8=) 16...Re8 (16...Qc7 17.e4 Nf4 18.e5 Be5 19.Bb7 Qb7 20.Nc6=+) 17.a5 (17.e4 Bg5 18.ed5 Bc1 19.Qc1 ed5+–) 17...ba5= 18.Qe1? (better 18.e4 Nb4 19.e5=) 18...Nd3 19.Qa5 Nc1 20.Rc1?? (better 20.Qd8 Red8 21.Rc1–+) 20...Be7 (better 20...Qa5 21.Be2 Qa2–+) 21.Qa7=+ Bc5?? (better 21...Qd7 22.Qa2 Rc5-/+) 22.Qb7+– Nb4? (better 22...Rc7 23.Qa6 Ra7+–) 23.Nc6 Nc6 24.Qc6 (24.bc6 Qh4+–) 24...Qc7?? (better 24...Rc6 25.bc6 Bd6=+) 25.Qc7+– Rc7 26.Bc6 (better 26.Be5 Rcc8+–) 26...Rb8 (26...Rec8+–) 27.Be5 Rbc8 (27...Rcc8 28.Bb8 Rb8 29.Rb1+–) 28.Bc7 Rc7 29.g3 (better 29.b6!? Rc6 30.Ra1 Bf8+–) 29...Kf8 30.Ne5 Ke7 (30...Ba7+–) 31.Rc5 Kd6 32.Nd3 e5 (32...f6 33.h3+–) 33.Rd5 Ke7 (33...Ke6 34.Re5 Kf6 35.Be4 Rc1 36.Kg2+–) 34.Re5 (34.Ne5 Ke6+–) 34...Kd6 (34...Kf6 35.f4 g5 36.fg5 Kg7 37.Nb4+–) 35.Rd5 Ke7 (35...Ke6 36.Nf4 Ke7 37.Rd1+–) 36.Nc5 (36.Nb4 Ke6 37.Rd1 Re7+–) 36...f6 37.Na6 (37.Bd7 Ra7 38.b6 Ra1 39.Kg2 Rb1+–) 37...Rc8 38.Rd7 Ke6 39.Nc5 Ke5 (39...Kf5 40.Be4 Kg5 41.Rg7 Kh5 42.Rh7 Kg4 43.h3 Kg5 44.Ne6) 40.Rd5 1–0. BeepBeepImAJeep (2625) – Chessmaster_64 (2215), lichess.org, 2017.

11.Nbd2 Qc7 12.a5 Qb8 (12...ba5 13.Bc3=) 13.a6 Ba8 14.Rc1 cd4 15.Nd4 Nc5 16.cd5 Bd5 17.Bf3 Nce4 (better 17...Nd3 18.Bd5 Nd5 (worse 18...Nc1 19.Bc4+–) 19.Rc8 Rc8=) 18.Ne4+– Ne4 19.Nc6 (better 19.Be4!? Be4 20.Qg4+–) 19...Bc6+= 20.Rc6 Nc5 21.Rc8 Qc8 22.Bc6 Rd8 23.Qg4 Threatening mate: Qxg7 23...f6 24.Rc1 Qc7 25.h3 (25.Rc4 Bd6 26.f4 Qf7+=) 25...Qd6 26.Bd4 e5 (26...Nb3 27.Re1+=) 27.Bc5+– bc5 28.Qc4 Kh8 29.Be4 Bf8 (29...Qd7 30.Qf7+=) 30.Rb1 (30.Qf7 Be7 31.b6 Qd7 (31...ab6?? 32.a7+–) 32.ba7 Qa7+–) 30...Qb6 31.Bc6 (31.Qf7 g6+–) 31...Qc7 32.Qe6 Qd6? (better 32...Qb6+=) 33.Qd6+– Bd6 (33...Rd6?? 34.b6 ab6 35.a7+–) 34.Be4?? (better 34.b6 Bb8 35.ba7 Ba7 36.Rb7+–) 34...Bc7+= 35.b6 Bb6 (35...ab6 36.a7) 36.Rb6! (36.Rb6 ab6 37.a7=) 1–0. BeepBeepImAJeep (2630) – schildkroete (2010), lichess.org, 2017.

11.Nbd2 Qc7 12.Rc1 Qb8 13.h3 Rfd8 14.cd5 Nd5 15.dc5 Nc5 16.Be5 Qa8 17.Nd4? (17.Bd4 Nf6=+) 17...Bf6 (better 17...Nd7!? 18.N2f3 Nc3–+ (18...Ne5?! 19.Ne5 Nc3 20.Qd3 Ne2 21.Qe2-/+)) 18.Bf6 Nf6 19.Bf3 Nce4 (19...e5 20.Bb7 Qb7 21.Nc6 Rc6 22.bc6 Qc6 23.Qe2 Qa4 24.Rfd1=) 20.Ne4 Ne4 21.Rc8 Qc8 (worse 21...Bc8 22.Qc2 Bb7 23.Nc6+–) 22.Qc1 Qa8? (better 22...Nc5!?=) 23.Nc6+– Bc6 24.bc6 The passed pawn on c6 quickly leads to threats (24.Qc6 Qc6 25.bc6 f5+–) 24...f5? (better 24...Nd2=) 25.Be4+– fe4 26.c7 Rc8 (better 26...Rf8+–) 27.Rd1 Kf7 (27...Kh8+–) 28.Rd7 Kf6 (28...Ke8 29.Qd1 Qc6 30.Rd8 Ke7 31.Rc8 Qd7 32.Qd7 Kd7+–) 29.Qc3 (29.Qa1 e5 30.Rd6 Kf7 31.Qa2 Qd5 32.Qd5 Ke7 33.Qe6 Kf8 34.Rd8 Rd8 35.cd8Q) 29...Kf5 (29...e5 30.Rd6 Ke7 31.Qe5 Kf8 32.Rd7 Rc7 33.Qg7 Ke8 34.Qe7) 30.Qg7 Qc6 (30...e5 31.g4 Ke6 32.Qe7) 31.Rf7 1–0. BeepBeepImAJeep (2530) – biorelle (2205), lichess.org, 2017.

11.Nbd2 Bd6 12.a5 Re8 (12...ba5 13.Bc3=) 13.ab6 ab6 14.Ra7 Qc7 15.dc5 Nc5 16.cd5 Nd5 17.Nc4 Bf8 (17...Ra8 18.Nd6 Qd6 19.Qd4+=) 18.Be5+= Qd8 (better 18...Qd7+=) 19.Bg3 (19.e4!? f6 20.ed5 fe5 21.de6+–) 19...Ra8 (better 19...Nc3!? 20.Qc2 Nb5=+) 20.Ra8= Ba8 21.Qc2 Nb4 22.Qb1 Ne4 23.Rd1 Qc8 (23...Bd5 24.Be5+=) 24.Rc1 (better 24.Be5+=) 24...Nd5?? (better 24...Ng3!? 25.hg3 Qb7=) 25.Nd6 (better 25.Qe4 Ba3 26.Ra1+–) 25...Nd6 26.Rc8 Nc8 (26...Rc8 27.Be5+–) 27.Nd4 (27.Bd3 f5+–) 27...Bc5 28.Bf3 (28.Bd3 h6+–) 28...Nce7 (28...Bd4 29.ed4 Nc3 30.Qd3 Bf3 31.Qc3+– (31.gf3?! Nd5+=; worse 31.Qf3 Nd5+–)) 29.h3 (29.Nb3 Bb4+–) 29...h6 (29...Bd4 30.ed4 Nf6 31.Be2+–) 30.Be5 (30.Nb3 Bb4+–) 30...Nc3? (30...Ng6 31.Bh2 Bd4 32.ed4+–) 31.Qc2 (31.Qa1!? Bf3 32.Nf3 Ne4 33.Bg7 Nf5+–) 31...Bf3 (31...Bd4 32.Bd4 Nb5 33.Qa4 Bf3 34.gf3+–) 32.Nf3+– Ncd5 33.Qb2 (better 33.e4 Nb4 34.Qd2+–) 33...Nf5? (better 33...f6 34.Bd4 Bd4 35.Nd4 Kf7+–) 34.e4 Nf4 (34...f6 35.Bh2 Nfe7 36.ed5 ed5+–) 35.Bf4 (worse 35.ef5 Nd3 36.Qd2 Nf2+–) 35...Nd4 (35...Nd6 36.Bd6 Bd6+–) 36.Nd4 e5 (36...Rd8 37.Be5 g6 38.Qa1+–) 37.Be5 (better 37.Nf5 Kh7+–) 37...Re5 38.Nb3 (38.Nb3 Bd6 39.Qe2+–; better 38.Nf5 f6 39.Qd2 Rf5 40.ef5 Kh7+–) 1–0. BeepBeepImAJeep (2590) – Mister_Potato (1870), lichess.org, 2016.

11.Nbd2 Ne4 12.Ne4= de4 13.Ne5 Rc7 (13...Ne5 14.de5 f6 15.a5+=) 14.Qc2 Bd6 (14...cd4 15.Bd4 Ne5 16.Be5+=) 15.Nc6+= Qh4 (15...Rc6 16.bc6 Bc6+–) 16.g3+– Qh3 (16...Qg5 17.Qe4 Nf6 18.Qd3+–) 17.Qe4+– Nf6 18.Qg2 (18.Qf3!?+–) 18...Qg2+– 19.Kg2 Bc6 20.bc6 Rc6 21.d5 ed5 22.Bf6 gf6 23.cd5 Rcc8 24.Rac1 (24.Rfc1 Rcd8 25.Ra2 Be5+–) 24...Rfd8 (24...Rfe8 25.a5+–) 25.Rc4 Bf8 (25...Re8 26.Bg4 Rc7 27.Rb1+–) 26.Rd1 Rd6 27.Bg4 Rcd8 28.e4 Re8 29.Bf5 h6 30.f4 Bg7 (30...Rdd8 31.Kf3+–) 31.Kf3 Kf8 (31...Bf8 32.a5!+–) 32.Rb1 Ke7 (32...Re7 33.a5!+–) 33.a5! Ra8 (33...ba5 34.Rb5 Double attack (34.Rc5 Deflection; 34.Rb5 Decoy)) 34.Ra4 Rb8 35.ab6 ab6 36.Ra7 Ke8 37.Ke2 Bf8 38.Kd3 (38.Rb5 Rdd8+–) 38...b5 39.Rc7 (39.Kc3 Rdd8+–) 39...Ra6 (39...Rdd8!?+–) 40.e5+– Ra3 (40...c4 41.Ke4 fe5 42.fe5+–) 41.Ke2 fe5 42.fe5 Be7 (42...Ra2 43.Kf3 Ra3 44.Kg4 Ra4 45.Kh5+–) 43.d6 Bd8 44.Rc5 (44.Rb5! Rb5 45.Bd7 Kf8 46.Bb5 Ra8+–) 44...b4 45.Bd3 b3 46.Rb5 (46.Bb5 Kf8+–) 46...Rb5 (46...Rb6!?+–) 47.Bb5 Kf8 48.Bc4 Ra5 49.Rf1?? (better 49.Rb3 Re5 50.Kd3+–) 49...Re5+– 50.Kd3 f6 (50...f5 51.Bb3 Ke8 52.Kd4+–) 51.Bb3 Ke8 52.Ba4 Kf7 53.Rb1 (better 53.Rf4!?+–) 53...Rd5= 54.Ke4 Rd6 55.Rb7 Be7 56.Bb3 Kf8 57.Kf5 h5 (57...Rd2 58.Kg6+=) 58.Kg6+= Rd2 59.h4 Rd3 60.Kh5 Rg3?? (better 60...f5=) 61.Rb8+– Bd8 62.Rd8 Ke7 63.Rb8 Kd6 64.Bc2 Ke5 (64...Rg2 65.Bg6 Rf2 66.Kh6+–) 65.Rb5 Ke6 (65...Kd4 66.Bg6 Rh3 67.Rf5+–) 66.Kh6 Rg1 (66...Rg2 67.Bf5 Kd6 68.Bg6+–) 67.h5 Rg2 (67...Ra1+–) 68.Bg6 Ra2 69.Rb6 Ke5 (69...Kd7 70.Kg7+–) 70.Kg7 Ra7 71.Bf7 (71.Bf7 Ra1 72.Rf6 Rg1 73.Rg6+–) 1–0. Morriss,Pete (1970) – Waddington,Mike P (2060), Polar Capital Jersey Festival – Open Se, 2017.

11.Nbd2 h6 12.a5 Qc7 (12...ba5 13.Bc3=) 13.Qa4 (13.a6 Ba8=) 13...Rfd8 14.ab6 (14.cd5 Bd5 15.Rfc1 Qb7=) 14...ab6 15.Qb3 (15.cd5 Bd5 16.Rfc1 Qb7=) 15...Ra8 (15...cd4 16.ed4 dc4 17.Nc4=+) 16.Rac1 Rac8 (16...Bd6 17.Rfd1=) 17.h3 (17.Ra1 cd4 18.Nd4 Nc5=+) 17...Qb8 18.Qc2 dc4 19.Nc4 cd4 20.Bd4 Nc5 (20...e5 21.Nfe5 Ne5 22.Be5 Rc4 23.Bb8 Rc2 24.Rc2 Rb8 25.Rd1=) 21.Qb2 (better 21.Nb6 Rc7 22.Na4+– (worse 22.Bc5 Rc5 23.Nc4 Be4=+)) 21...Qc7?? (21...Bf3 22.gf3 Qb7 23.Ne5=) 22.Nfe5?? (better 22.Be5 Bd6 23.Nd6 Rd6 24.Bf6 gf6 25.Qf6+–) 22...Bf8 23.Nc6 Bc6 24.bc6 Qc6 25.Qb6 Qb6 26.Nb6 Rc6 27.Na4 Rdc8 28.Bf3 Nd5 29.Nc3?? (29.Bc5 Bc5 30.Rfd1 Bd6 31.Rc6 Rc6+=) 29...Nc3?? (better 29...Nb3 30.Bd5 ed5–+) 30.Rc3+= (worse 30.Bc3 Nd3 31.Bc6 Nc1 32.Rc1 Rc6=) 30...R6c7 31.Rfc1 Na6? (31...Bd6 32.Rd1=) 32.Rc7 (better 32.Bb7! Rc3 33.Bc3+– (33.Rc3?! Rc3 34.Bc3 Nc5=)) 32...Rc7+= 33.Ra1 Nb4 34.Ra8 Nd5 (34...Nd3!?+=) 35.Bd5+– ed5 36.Be5 Rd7 37.Bc3 f6 (37...Rb7 38.Rd8+–) 38.Bb4 Rf7 39.f4 g6 40.g4 (40.Rd8!?+–) 40...Kg7+= 41.Bc3 (41.Bf8 Rf8 42.Ra5 Rd8+=) 41...Bd6 (41...Bc5 42.Bd4 Bd4 43.ed4=) 42.Bd4 (42.Rd8 Bc5 43.Bd4 Bd4 44.ed4 Rc7+–) 42...Rd7+= 43.Ra6 Kf7 44.Rc6 f5 45.Rc1 (45.gf5 gf5 46.Kf2 h5+=) 45...Ke6 46.g5 (46.Rc8 Rh7=) 46...h5 (46...hg5!? 47.fg5 f4=+) 47.h4 Rc7 48.Kf2?? (48.Kf2 Rc1 49.Ke2–+; better 48.Ra1=) 1–0. BeepBeepImAJeep (2650) – biorelle (2165), lichess.org, 2017.

12.Bd4 Bc5 13.Bc3 Qe7 (13...Qc7 14.a5=) 14.Qb3 (14.a5 Rfd8=) 14...Bd6 (14...e5 15.a5=) 15.a5 Nc5 (15...e5 16.Rfd1=) 16.Qb2 Rfd8 17.ab6 (17.Rfc1 Ncd7=) 17...ab6 18.Ra7 Bb8 19.Ra2 (19.Bf6 Qf6 20.Qf6 gf6=) 19...Nfe4 20.Be5 Nd2 (20...Be5 21.Qe5 Nd7 22.Qb2+=) 21.Nd2= Be5 (21...Qg5 22.Bb8 dc4 23.Bf3 Rb8 24.Bb7=) 22.Qe5 Ra8 (22...dc4 23.Nc4 Bd5 24.Qf4+=) 23.Ra8 Ra8 24.Ra1 Ra1 25.Qa1 h6 26.cd5 Bd5 ½–½. Oestblom,Stig – Stenbrink,H, Gaevle Sweden, 1974.

12.Nd4 dc4 13.Nc4 Nc5 14.Bf3 Bf3 (14...Nfe4 15.a5=) 15.Qf3+= (worse 15.Nf3 Qd1 16.Rfd1 Nb3-/+) 15...Qd5 16.Nc6 (16.Qd5 Nd5 17.Nc6 Nd3+=) 16...Rfe8?? (better 16...Rc6 17.bc6 Qc4–+) 17.Bf6 (17.Qe2 Qg5+=) 17...Bf6 18.Rac1 (better 18.Qd5 ed5 19.Nd6 Ba1 20.Ra1+=) 18...Nd3? (18...Qf3!? 19.gf3 A) worse 19...Na4 20.Nd6 (20.Na7?! Rcd8=) 20...Ra8 21.Ne8 Re8 22.Rc4+–; B) 19...Ra8=) 19.Qd5 (19.e4!? Qd7 20.Rcd1 Rcd8+–) 19...ed5+– 20.Nd6 Nc1 21.Rc1 Kf8 22.Ne8 Ke8 23.Kf1 (better 23.Rd1!?+–) 23...Kd7+= 24.Ke2 a6? (24...Kd6 25.Kf3+=) 25.Kd3 (better 25.ba6 Kd6 26.Ne7 Rc1 27.a7 Be7 28.a8Q Rc2 29.Kf3+–) 25...ab5= 26.ab5 Ra8 (26...Kd6 27.h3=) 27.Rc2 (27.Nb4!? Ra3 28.Ke2+=) 27...Ra3= Black gets the initiative 28.Ke2 Rb3 29.Na7 Ra3 (29...h6 30.Ra2=) 30.Nc8+= Bd8 31.Rc6 Rb3 32.Na7?? (32.Nb6 Bb6 33.Rb6 Kc7 34.Rc6 Kd7+=) 32...Bc7 (32...Rb5 33.Rc2 Ra5-/+) 33.g3? (better 33.Rc2=) 33...Ra3–+ 34.Rc7 Kc7 35.Nc6 Ra2 (35...Kd6 36.Nd8–+) 36.Kf3 Kd6 37.Nd4 (37.Nd8 Ra7–+) 37...f6 (37...Kc5!? 38.g4–+) 38.h4 g6 39.g4 (39.Nb3 Ra3 40.Nd4 Kc5–+) 39...Kc5 40.h5 Rd2?? (better 40...gh5 41.gh5 Ra4 42.Ne6 Kb5–+) 41.Nb3+– Kb5 42.Nd2 Kb4 43.hg6 hg6 44.Ke2 (44.e4!? Kc5+–) 44...Kc3 45.f3 b5 46.e4 d4?? (46...de4 47.Ne4 Kc2 48.Nf6 b4+–) 47.g5 fg5 48.e5 b4 49.e6 b3 50.e7 d3 51.Ke3 b2 52.e8Q Kc2 (52...Kb4 53.Qe7 Kb5 54.Qg5 Kc6 55.Qg6 Kc7 56.f4 Kd8 57.Qb6 Kc8 58.Qb2 Kc7 59.Qc1 Kd6 60.Qc8 Ke7 61.f5 Kd6 62.Ne4 Ke7 63.Qc7 Kf8 64.f6 d2 65.Qe7 Kg8 66.Qg7) 53.Qc6 (53.Qa4 Kc1 54.Qc4 Kd1 55.Qd3 b1Q 56.Qb1) 53...Kd1 54.Qc4 Ke1 (54...b1R 55.Qd3 Rb2 56.Nc4 Ke1 57.Nb2 g4 58.Qe2) 55.Qd3 b1Q 56.Qe2 (56.Qb1) 1–0. BeepBeepImAJeep (2655) – VeniVidiVici42 (2350), lichess.org, 2016.

12.Nd4 dc4 13.Nc4 Nc5 14.Bf3 Bf3 (14...Nfe4 15.a5=) 15.Qf3+= (worse 15.Nf3 Qd1 16.Rfd1 Nb3-/+) 15...Qd5 16.Qd5 ed5 (better 16...Nd5 17.Nc6 Rfe8+=) 17.Nc6?? (better 17.Ne5+=) 17...Rc6!-/+ 18.bc6 dc4 19.Rac1 Rc8 (19...Na4 20.Bf6 Bf6 21.Rc4–+) 20.Rc4-/+ Rc6 21.Rd1 h6 22.h3 Kh7 23.Bd4 Rd6 24.Rb1 (24.Kf1 Nfd7-/+) 24...Rd7 25.a5 Nfe4 (better 25...Nd5!?–+) 26.ab6=+ ab6 27.Rb6 Ne6 28.Bg7?? (better 28.Rb8!?=+) 28...Nd2 (better 28...Rd1 29.Kh2 Nd2–+ (29...Ng7 30.Re4 Nf5 31.g3+=; 29...Nf2?! 30.Be5 Bc5 31.Rb7–+)) 29.Rd4 Nd4 30.Bd4 Ne4 31.f3 (31.Rc6 Bf8-/+) 31...Nd6 (31...Ng3 32.Be5 Nf5 33.Rb3-/+) 32.Ra6 (32.g4 h5-/+) 32...Nf5 33.Ba7 (33.Ra7 Rd5-/+) 33...Bg5 (better 33...Rd1!? 34.Kf2 Rd2 35.Kf1 Ng3 36.Kg1 Rd1 37.Kf2 Bh4–+) 34.f4-/+ Be7 35.g4 Nd6 36.Kf2 Nc4 (36...Ne4 37.Kf3 Nd2 38.Ke2-/+) 37.Kf3 Nd2 38.Ke2 Ne4 (38...Nb3 39.Ra4-/+) 39.Bd4 Bc5 40.Ra4 Bd4 41.Rd4 Ng3 (41...Re7!?=+) 42.Kf3= Rd4 43.ed4 Nf1 44.Ke2 Ng3 45.Kf3 Nf1 46.Ke2 Ng3 47.Kf3 ½–½. BeepBeepImAJeep (2525) – ilhamnurfajri (2215), lichess.org, 2019.

12.Nd4 dc4 13.Nc4 Nd5 14.Nd2 (14.a5 N5f6=) 14...Nc5 15.Bf3 (15.Rc1 Bf6=) 15...Ba8 (15...Nd3 16.Qb3 Nb2 17.Qb2=) 16.Ba3 (16.Nc4 Qc7=) 16...Nf6 (16...Qd7 17.Bb2=) 17.Nc4 (17.Ba8 Ra8 18.Nc4 Qc7+=) 17...Bf3 18.Qf3 White gets the initiative 18...Nd3? (better 18...Qd5 19.Qd5 Nd5+=) 19.Nc6+– White prepares the advance a5 19...Rc6 20.Qc6 Ba3 21.Ra3 Nc5 (21...Nb4 22.Qd6 Nbd5 23.a5+–) 22.Ne5 (22.a5!? Nd5+–) 22...Nd5 23.a5 Qf6 (23...Qb8 24.Nc4+–) 24.Nf3 (24.ab6 ab6 25.Nc4 Qd8+–) 24...g5 (24...Qb2 25.Raa1+–) 25.ab6 ab6 26.h3 h5 27.Qd6 (27.Rd1 Qb2 28.Ra8 Ne4+–) 27...g4 (27...Ne4 28.Qd7+–) 28.hg4 hg4 29.Qg3 Qg7 30.Ne5 (30.Nd4 Qg5 31.f4 Qh5+–) 30...f5 31.Nc6 (31.f4 Ne4 32.Qh4 Nec3+–) 31...Ne4 (31...Nc3 32.Rc3 Qc3 33.Qc7+–) 32.Qe5 (32.Qh4 Qh7 33.Qh7 Kh7+–) 32...Qh6 (better 32...Qe5 33.Ne5 Nec3+–) 33.Ra7?? (better 33.Rfa1 Qf6 34.Qf6 Rf6 35.Nd4+–) 33...g3= Threatening mate: Qh2 34.fg3 Qe3 35.Rf2?? (better 35.Kh2 Qh6 36.Kg1 Qe3 37.Kh2 Qh6 38.Kg1 Qe3=) 35...Qf2–+ 36.Kh2 The mate threat is Qg7 36...Ndf6 37.Ne7 Kf7 (37...Kh7 38.Nf5 Kh8 39.Nd4–+) 38.Nf5 Kg6?? (better 38...Kg8 39.Qe6 Kh8-/+) 39.Nh4 (39.Rg7 Kh5 40.Qe4 Qd4 41.Qd4 ef5 42.Qh4) 39...Kh6–+ 40.Qf4 Qf4 41.gf4 Ng4 42.Kh3 (42.Kg1 Rf4 43.Ra4–+) 42...Nef6 (better 42...Rf4 43.Nf3 Ngf2 44.Kh2 Rf5–+) 43.g3 (43.Re7 Nd5 44.Re6 Kh5–+) 43...Rd8 44.Re7 (44.Ra2–+) 44...Rd2 45.Re6 (45.Nf3 Rf2 46.Re6 Rf3 47.Kg2–+) 45…Rh2 0–1. BeepBeepImAJeep (2575) – Fide15 (2295), lichess.org, 2017.

12.Nd4 Bc5 13.cd5 Nd5 14.Rc1 N7f6 15.Nc4 Qe7 16.Ne5 Bd4 (16...Rfd8!?=) 17.Qd4+– (17.ed4?! Rc1 18.Qc1 Rc8=+) 17...Rfd8 18.Qh4 (18.Rc8 Rc8 19.Bf3 Rc2+=) 18...Qd6 (18...Qb4 19.Qb4 Nb4 20.Rc8 Rc8 21.Rd1+=) 19.Nc4 Qe7 20.Bd4 (20.Rfd1 Qb4+–) 20...Nd7 (20...Qb4 21.Rfd1+=) 21.Qg3 (21.Qe7 Ne7 22.Nd6 Rc1 23.Rc1 Bd5+–) 21...e5 (21...f6!? 22.Nd6 Rc1 23.Rc1 Ba8+–) 22.Ne5+– Ne5 23.Qe5 Qe5 24.Be5 Nb4 (24...f6 25.Bb2+–) 25.h3 (25.Rc8 Rc8 26.Rd1 f6+–) 25...f6 26.Bg3 Nd5 (26...Rd2 27.Bg4 Rcc2 28.Bf5 Rc1 29.Rc1+–) 27.Rfd1 Rc1 28.Rc1 Kf7 29.Bf3 Ke6? (29...Ke8 30.h4+–) 30.a5 (better 30.e4!? g5+–) 30...ba5 (30...f5 31.a6 Ba8 32.Bh4+–) 31.Ra1 (31.e4 a4+–) 31...g5 (31...a6!? 32.Ra5 ab5 33.Rb5 Ba8+–) 32.Ra5 Rd7? (32...Ra8 33.h4+–) 33.Ra7 (better 33.e4 Ne7 34.Ra7+–) 33...f5 (33...Bc8 34.Rd7 Bd7+–) 34.Ra4 (better 34.e4!? Nc3 35.ef5 Ke7 36.Rb7 Rb7 37.Bb7 Nb5+–) 34...f4?? (better 34...Nc3 35.Ra5 Bf3 36.gf3 Rb7 37.Ra6 Kd7+–) 35.ef4 (35.Bg4 Kd6 36.Bd7 fg3+–) 35...gf4 36.Bf4 (36.Bg4 Kd6 37.Bf4 Nf4 38.Bd7 Ng2+–) 36...Nf4 (36...Re7 37.Re4 Kd7 38.Re7 Ke7 39.Bg3+–) 37.Rf4 (better 37.Bg4 Kd6 38.Bd7 (worse 38.Rf4 Re7+–) 38...Ng2 39.Bc6 Bc6 40.bc6+–) 37...Bf3 38.Rf3 Rb7 (38...Rd1 39.Kh2 Rb1+–) 39.Rb3 Ke5 (39...Rb6 40.f3+–) 40.g4 Kd4 (40...Rb6 41.Kg2+–) 41.Rb1 Kc4 (41...Rb6 42.f4+–) 42.Kg2 (42.b6 Kd3+–) 42...Kc3 (42...Rb6 43.f4+–) 43.Re1 (43.b6 Kc2 44.Rb5 Kd3+–) 43...Kc2 (43...Rb5 44.f4+–) 44.Re3 (better 44.Re5!? Rb6+–) 44...Rb5 45.Rg3 (45.f4 Rb7+–) 45...Re5 (45...Rb4 46.Ra3+–) 46.h4 White prepares g5 (better 46.f4 Re2 47.Kg1+–) 46...h5 (46...Re4+–) 47.g5 Re4 48.Kh3 Re8 49.Rg2 (49.Rg2 Kd3 50.f4+–; 49.g6 Re1 50.f4 Rh1 51.Kg2 Rh4 52.g7 Rf4 53.g8Q Rg4 54.Qb3 Kc1 55.Rg4 hg4 56.Qc3 Kb1 57.Kg3 Ka2 58.Kg4 Kb1 59.Kf4 Ka2 60.Qc4 Kb2 61.Ke4 Ka3 62.Kd3 Kb2 63.Qb5 Ka3 64.Kc3 Ka2 65.Qb2) 1–0. BeepBeepImAJeep (2620) – ragetilt (2325), lichess.org, 2017.

12.Nd4 Nc5 13.Nc6 Bc6 14.bc6 Rc6 15.Nb3 Nb3 16.Qb3 dc4 17.Bc4 Qc7 18.Bb5=+ Rc2 19.Rac1 Rc8 20.Rc2 Qc2-/+ 21.Qc2 Rc2 22.Bd4 Nd5 23.Bd3 Ra2 24.Bb5 f6 25.Bd7 e5 26.Be6= Kf8 27.Bd5 Ra4 28.Bb2 a6 29.Bb3?? Rb4–+ 30.Ba3? Rb3 31.Be7 Ke7 32.e4 a5 33.Rc1 Kd7 34.f3 b5 35.Rd1 Kc7 36.Rd5 a4 37.Rc5 Kb6 38.Rd5 a3 39.Kf2 a2 40.Rd1 Rb1 41.Rd2 a1Q 42.Kg3 Rf1 43.Rd6 Kc7 44.Rd5 Qe1 45.Kg4 h5! 46.Kf5 Qh4 47.Ke6 Qh2 48.Rd7 Kb6 49.Rg7 Rd1 50.Kf6 Qg1 51.Kf5 Qc5 52.Rg6 Ka5 53.Re6 Qf8 54.Rf6 Qe7 55.Re6 Qh7 56.Ke5 Rd7 57.Rf6 Qg7 58.Kf4 h4 59.Rf5 Qg3 60.Ke3 (60.Ke3 Qe1 61.Kf4 Qd2 62.Kg4 Rg7 63.Kh5 Qg2 64.Rb5 Kb5 65.Kh4 Rh7#) 0–1. TONDA – distaff, Live Game Caissa's Web, 2006.

12.Nd4 Nc5 13.cd5 Bd5 14.Rc1 Qd7 15.Bf3 Qb7 (15...Nd3 16.Rc8 Rc8 17.Qb1=) 16.Bd5 Qd5 (16...Nd5 17.Rc4=) 17.Nc6+= Bd6? (17...Rc6 18.bc6 Qc6 19.a5+=) 18.Nf3?? (18.Bf6 gf6 19.Nc4 Qd1 20.Rfd1 Bc7 21.Ne7 Kg7 22.Nc8 Rc8+–) 18...a6? (better 18...Nd3 19.Rb1 Ne4+=) 19.Bf6+– gf6 20.Qd5 ed5 21.Rfd1 ab5 (21...Na4 22.ba6 Bc5 23.Rd4+–) 22.ab5 Ne4 23.Rd5 Bc5 24.Rdc5 (24.Nfd4 Ra8+–) 24...Nc5 25.Ne7 Kg7 26.Nc8 Rc8 27.Nd4 Ra8 28.h3 Ra2 29.Rc2 Ra1 30.Kh2 Rb1 31.Kg3 (31.g4 Kg6+–) 31...Kg6+– 32.f3 (32.f4 f5+–) 32...Ne6 33.Ne6 fe6 34.Rc6 Rb5 35.Re6 Rb2 36.e4 h5 (36...Kf7 37.Rc6+–) 37.Rc6 (37.e5 Kf5 38.Rf6 Ke5+–) 37...Kf7 38.h4 b5 39.Rb6 b4 40.Kf4 Rg2 41.Rb4 (41.Kf5 Rg3 42.f4 b3+–) 41...Rh2 42.Rb7 Kg6 43.Kg3 Re2 44.Rb8 Re1 45.Kf4 Rh1 46.Rg8 Kf7 47.Ra8 Rh4 48.Kf5 Rh1 (48...Rh3!? 49.Ra7 Kg8+–) 49.Ra7+– Kf8 (better 49...Kg8+–) 50.Kf6 Rf1 (50...Kg8+–) 51.Ra8 1–0. BeepBeepImAJeep (2585) – bogdanb (2420), lichess.org, 2015.

12.Nd4 Ne4 13.Rc1 (13.Ne4 de4 14.a5 Qc7=) 13...Nd2 14.Qd2 White fights for the Initiative 14...Nc5 15.cd5 Bd5 16.Qd1 Bb7 17.Bf3 Bf3 18.Qf3 (worse 18.gf3 Bf6=+) 18...Bf6? (better 18...Bd6=) 19.Nc6+– Qc7? (better 19...Rc6 20.Bf6 Qf6 21.Qc6 Qh4+–) 20.Bf6 gf6 21.Qf6 Rfe8 22.Rc4 (22.Rc4 h5 23.Qg5 Kf8 24.Qh5+–) 1–0. BeepBeepImAJeep (2610) – ragetilt (2315), lichess.org, 2017.

12.Nd4 e5 13.Nf5 Bb4 14.Rc1 Bd2 (14...Re8 15.f4=) 15.Qd2+= dc4 16.Bc4 Nc5? (better 16...Ne4!? 17.Qb4 Nec5+/-) 17.Qd8+- Rcd8 18.Be5 Na4 (18...Rfe8 19.Bf6 gf6 20.Rcd1+-) 19.Ra1 (19.Ra1 Nc5 20.Ra7+-) 1-0. Mely - Intltax (1765), ChessWorld.net, 2003.

11.ed4 Qb8 12.Nbd2 Bd6 13.h3 e5 (13...Rc8!?=+) 14.de5+= Ne5 15.Re1 dc4 (15...Re8 16.a5 dc4 17.Nc4 Nc4 18.Bc4 Re1 19.Ne1=) 16.Nc4+= Nc4 17.Bc4 Nh5? (better 17...Bb4 18.Re3 Qf4+=) 18.Ng5+- Nf4 19.Qd4 (19.Qd4 Nh5 20.Qg4+-) 1-0. DEFFM – GuestRYDH, freechess.org, 2021.

11.ed4 dc4 12.Na3!?

11.ed4 dc4+= 12.Nfd2 Nd5 13.Nc4 N7f6 14.Bf3 a6 15.Nbd2 ab5 16.ab5 Ra1 17.Ba1 Qd7 18.Qb3 Bb4 19.Nb6 Qb5 20.Nd5 (20.Ndc4 Nb6 21.Nd6 Bd5 22.Bd5 Qa5 (22...Qd5?! 23.Qb4 Nc8 24.Nc4+=) 23.Be6 Bd6–+ (23...fe6?! 24.Qe6 Kh8 25.Nf7 Rf7 26.Qf7=)) 20...Bd5-/+ (20...ed5?? 21.Bc3+–) 21.Bd5 Nd5 22.Nc4 Ra8 23.Rb1 Qa4 24.Qa4 Ra4 25.Ne3 Nf6 (25...Bd6 26.Nd5 ed5 27.Bc3+=) 26.Bc3= Bd6 27.Rb6 Ne4 (27...Bf8 28.Rb8=) 28.Bb2= h5 29.g3 Ra2 30.Nc4 Be7 31.Ne5 Bf6 32.Rb8 Kh7 33.Nf7 Nf2 34.Kf2 Decoy theme: f2 34...Bd4 (34...Rb2 35.Rb2 Bd4 36.Ke2 Bb2 37.Ng5 Kg6 38.Ne6 Kf5=) 35.Kf3= Bb2 36.Ng5 Kg6 37.Ne6 Be5 38.Nf4 (38.Rb5 Kf6 39.Nc5 Bd4=) 38...Bf4+= 39.gf4 Rh2 40.Rb6 Kh7 41.Kg3 Rh1 42.Ra6 Rg1 43.Kf2 Rg6 44.Ra1 Kh6 45.Ra8 The mate threat is Rh8 45...Rb6 46.Ra3 (46.Kf3 Kg6-/+) 46...h4 47.Kg2 Rb5 48.Kh3 Kh5 49.Re3 g6 50.Ra3 ½–½. Labahn,Wolfgang – Drozdov,Igor (2360), Beskidy–Open, 1991.

11.ed4 Rc8 12.Nbd2 dc4 13.Bc4 Qc7 14.Ne5 Bb4 15.Rc1 Qd6 16.f4 Ne4 17.Ne4= Be4 18.Qe2 Bd5 19.Bd5 Qd5 20.Nc6 Bd6 21.f5 ef5 22.Qf3 Qf3 23.Rf3 Rfe8 24.Rf5 Nf6 25.d5 Ng4 26.Bg7 Ba3 27.Rb1 Bc5 28.Bd4 Rc6 29.bc6 Bd4 30.Kh1 Ne5 31.Re1 Kf8 32.c7 Rc8 33.d6 Ke8 34.Re4 Bc3 35.Rf3 Bb2 36.Rb3 Ba1 37.Ra3 Bb2 38.Ra2 Bc3 39.Rc2 Ba1 40.Re1 Kd7 41.Ra1 Kd6 42.Rd1 Ke7 43.g4 h6 44.h4 f6 45.g5 hg5 46.hg5 fg5 47.Re1 (47.Re1 Kf6 48.Rf2 Ke6 49.Rfe2 Rc7 50.Re5 Kf6 51.Re6 Kf5 52.Re7+–) 1–0. MrkT – no1marauder, internet, 2005.

11.ed4 Rc8 12.Nbd2 dc4 13.Bc4 Nd5 (13...h6 14.Qb3+=) 14.Qb3 (14.Rc1 Nf4+=) 14...N7f6 (14...Nf4 15.h4+=) 15.Rfe1 (15.Ne5 Nf4 16.f3 N6d5+=) 15...Qc7 (15...Nf4 16.g3 Nh3 17.Kf1+=) 16.Rac1 (16.g3 Bb4=) 16...Qf4 (better is 16...Qd6+=) 17.Ne5?? (better is 17.Ba3=) 17...Qd2–+ 18.Rcd1 (18.g3 g6–+) 18...Qb4 19.Qa2 (19.Bc1 Nc3 20.Rd3 Nb5 21.Qb4 Bb4–+) 19...Rc7 (19...Nf4 20.f3 Nd7 21.Bb3 Ne5 22.Re5–+) 20.Bc1 (20.Ra1–+) 20...Nc3 (20...Nc3 21.Qb3 Rfc8 22.Qb4 Bb4–+) 0–1. Levin,Anatoly – Klobucar,Dean (2180), Internet Section, 2004.

11.Bd4 Rc8 12.Ne5 (12.cd5!? Bd5 13.a5=+) 12...Ne5-/+ 13.Be5 dc4 14.Qc2?? (better is 14.Nc3-/+) 14...Qd5–+ 15.Bf3 Qe5 16.Bb7 Qa1 17.Bc8 Rc8 18.Nc3 Qa3 19.Ne4 (19.Rc1–+) 19...Ne4 20.Qe4 Qa4 (better is 20...c3 21.Qb7 Rc4 22.Qa7–+) 21.Qb7 Re8 22.Qc6 (22.Rb1 c3 23.Re1 Qb5–+) 22...Kf8 (22...Rd8!? 23.e4–+) 23.Rc1 Qa3 (better is 23...Bc5 24.h3 Rd8 25.Kh2–+) 24.Qc4 Bf6 25.Rd1 Qb2 26.g3 Be5 (26...Qc3 27.Qa4–+) 27.Qc6 (27.Qd3 Kg8–+) 27...Bc3 (better is 27...Qe2 28.Rd7 a6 29.ba6 Qa6–+) 28.Qd7?? (28...Qe2 29.Qd6 Kg8 30.Qd3–+; better is 28.Qd6 Kg8 29.Qe7 Qb5 30.Rd8 Qb1 31.Kg2 Qe4 32.f3 Qc2 33.Kh3 Qf5 34.Kg2 Qc2 35.Kh3 Qf5 36.Kg2 Qc2=). stoker – January, Live Game Caissa's Web, 2004.

11.Nd4 dc4 12.Bc4 Rc8 13.Be2 Qc7 14.Nd2 Qb8 15.Bf3 Ne5 (15...Bd6 16.Bb7 Qb7 17.Nc6=) 16.Bb7+= White fights for the Initiative 16...Qb7 (16...Neg4 17.N2f3 Qb7 18.Nc6+=) 17.N2f3 (17.Ne6!? fe6 18.Be5+–) 17...Nf3 18.Qf3 Qf3 19.gf3 Rc7 (19...Bc5 20.Nc6 a6 21.Rfc1+=) 20.Nc6 a5? (better 20...Rfc8!?+=) 21.Ne7 Re7 22.Ba3 Rfe8 (22...Rb7 23.Bf8 Kf8 24.Rac1+–) 23.Be7 Re7 24.Rfd1 g6 (24...Kf8 25.Rd8 Re8 26.Rd6+–) 25.Rac1 (25.Rd8 Kg7+–) 25...Nd5 (25...Kg7 26.Rd6 Rb7 27.Kf1+–) 26.Rc6 (26.e4!? Nf4 27.Rc6 Rb7+–) 26...Rb7 27.Kg2 Nb4 28.Rcd6 (28.Rc8 Kg7+–) 28...Kg7 29.Rd8 (29.e4 Na2+–) 29...Rc7 (better 29...Nd5+–) 30.R1d7 Rc2 31.Rb8 (31.e4 g5+–) 31...Nd5 32.Rbb7 Ne3 33.Kg3 (33.Kh3!? Rf2 34.Rf7 Kh6 35.Rb6 Nf1 36.Re6 Rh2 37.Kg4 Rg2 38.Kf4 Ra2+–) 33...Nf5 34.Kh3 Nh6 35.Rb6 The passed pawn on b5 quickly leads to threats (35.Kg2 Rc4 36.Rb6 Ra4 37.Re6 Rb4+–) 35...Rf2+– 36.Re6 Ra2?? (better 36...Rf3 37.Kg2 Ra3+–) 37.Re4 (better 37.b6!? Ra3 38.b7 Rf3 39.Kg2 Rb3+–) 37...Nf5 (37...Ra3 38.Ra7+–) 38.b6 Rb2 (38...Ra3+–) 39.b7 h5 40.Re5 Rb3 (40...Nd6 41.Rb5! Nb7 42.Rb2 Nc5+–) 41.Rb5 (41.Rb5 Rf3 42.Kg2 Nh4 43.Kg1+–) 1–0. BeepBeepImAJeep (2765) – Sviridov_Valery (2760), lichess.org, 2019.

11.Nd4 dc4 12.Nd2 Rc8 13.Nc4 Nc5 14.Nd2 Nce4 15.Ne4 Ne4 16.Bf3 Bf6 (16...Bd6 17.Be4 Be4 18.Qg4=) 17.Rc1 Rc1 18.Qc1 Qd5 (18...Qa8 19.Rd1=) 19.Rd1 Qg5 (19...Qa2 20.Qa1 Qa1 21.Ba1+=) 20.Nc6 (20.Qc7 Bd5 21.Qa7 Ra8 22.Qb6 Bd8 23.Ne6 A) 23...Bb6?? 24.Ng5 Ng5 25.Bd5 Ra4 26.Rc1+–; B) 23...Be6?? 24.Qc6 (24.Be4 Bb6 25.Ba8 Bb3–+) 24...Nd6 25.Qa8+–; C) 23...fe6 24.Rd5 C1) 24...Bb6 25.Rg5 Ra4 26.Rg7 Kf8 27.Be4 (worse 27.Rh7 Nf2 28.Kf2 Ra2+–) 27...Re4 28.Rh7+–; C2) 24...Qd5-/+) 20...Nc5 21.Bf6 Qf6 22.Qc4 Bc6 23.bc6 h6 (23...Qe7 24.a5+=) 24.a5 Rc8 (24...Qe7 25.Rc1+=) 25.ab6 ab6 26.Qb5 e5 27.Bd5 Qd6?? (better 27...Rb8+=) 28.Bf7!+– Kf7 29.Rd6 Ke7 30.Rd1 Rd8 (30...Kf6+–) 31.Rd8 Kd8 32.Qb6 (32.Qb6 Ke7 33.Qc5 Ke6 34.c7 Kf5 35.c8Q Kf6 36.Q5f8 Kg5 37.Qg7 Kh5 38.Qgg4) 1–0. BeepBeepImAJeep (2585) – Lashat25a (2110), lichess.org, 2018.

11.Nd4 Nc5 12.Nd2 Qc7 13.cd5 Nd5 14.Bc4 Rfd8 15.Qe2 Bf6 (15...Rac8 16.Rfd1+=) 16.N2f3 a5 17.Rfc1 Rac8 18.Bb3 Qb8 19.Bc2 Nb4 20.Bb1 e5 21.Nf5 Ncd3 22.Rf1 (22.Bd3 Nd3 (worse is 22...Rd3 23.e4=) 23.Rd1 Bf3 24.gf3 Nb2 25.Qb2 e4-/+) 22...Nb2 23.Qb2 Bf3 24.gf3 e4 25.Nd4 ef3 26.Kh1 Bd4 27.ed4 Qf4 28.d5 (28.Ra3 Rd4 29.Rg1 g6–+) 28...Rd5 (28...Rd5 29.Rg1 Qh6–+) 0–1. Mueller,Klaus_Uwe – Vahtera, corr ICCF EU–M–703, 1986.

11.Nd4 Nc5 12.Nd2 Rc8 13.N4b3 Nb3 14.Qb3 Bc5 15.Rfd1 Qe7 16.Ba3 Nd7 17.cd5 Bd5 18.Bc4 Ba3 19.Bd5 Bc5 20.Bf3 Nf6 21.Ne4 Ne4 ½–½. hal1958 – fatou, playchess.de, 2002.

11.Nd4 Rc8 12.Nd2 Bc5 13.cd5 Nd5 14.Rc1 Qe7 15.Bf3 Rfd8 16.Qb3 Ne5 17.Be2 (17.Be4 f5 18.N2f3 Nf3 19.Bf3 Qf7=) 17...Nf6 (17...Nb4 18.f4 Bd5 19.Nc4 Nc4 20.Bc4=) 18.Rfd1 (18.f4 Neg4 19.Nc4=) 18...h6 (18...Bd5 19.Qc3 Qe8 20.Nc2=) 19.N2f3 (better 19.Ne6!? Bd5 20.Qc3 Be6 21.Qe5+=) 19...Bd5=+ 20.Qc3 Ng6 (20...Bd4 21.Qd4 Nf3 22.Bf3 Rc1 23.Bc1=+) 21.Nc6 (21.Qe1!?=) 21...Bc6=+ 22.bc6 Rc6 23.Nd2 (23.a5 Rcd6=+) 23...Rcd6 (23...e5 24.Nf3 Rd1 25.Rd1-/+) 24.Ne4=+ Rd1 25.Rd1 Rd1 26.Bd1 Qd8 (26...e5 27.Nf6 Qf6 28.Bc2=) 27.Bc2 (27.Nf6!? gf6 28.Be2=) 27...Be7=+ 28.h3 Nf8 29.Bd3 N8d7 30.Bb5 Bf8 31.Ng3 (31.Nf6 Nf6 (31...gf6? 32.Bd7 Be7 33.Qd4+–) 32.Qc6 Qd1 33.Kh2 Qd6 34.Kg1 Qc6 35.Bc6 Nd5=+) 31...Nc5-/+ 32.Qc4 Qd1 33.Kh2 Bd6 34.Bf6 gf6 35.Qh4 Kg7 (better 35...Qd2!? 36.Kg1 a6=+) 36.f4= Be7 (36...Kg6 37.Be2 Qa1 38.Bb5=) 37.Nh5+= Kh7 38.Be8 Qd8?? (38...Ne4 39.Bf7 A) 39...Qa4?? 40.Ng3 (40.Be6?! Qb5+–) 40...Qb5 41.Ne4+–; B) 39...Nd2+–) 39.Qg3 (39.Bf7? Qf8 40.Nf6 Kg7 41.Be6 Qf6 42.Qg3 Qg6–+) 39…Bf8 1–0. BeepBeepImAJeep – penguingim1 (2660), lichess.org, 2018.

11.Nd4 Rc8 12.Nd2 Nc5 13.cd5 Nd5 14.Nc4 White plans a5 14...Bf6 15.a5 Qc7 16.a6 Ba8 17.Rc1 (17.Qc2 e5 18.Nf5 Rfd8=) 17...Rfd8=+ 18.Qe1 Qd7 19.h3 Bd4 (19...Na4 20.Ba1=+) 20.Bd4= Nb3 (worse 20...Qb5 21.Nd6 Qd7 22.Nc8 Rc8 23.Bc5 bc5 24.Qd2+–) 21.Rd1 Nd4 22.Rd4 Qc7 (22...Qe7 23.Qa1=) 23.Qa1 Ne7 24.Rfd1 Nf5 25.R4d2 (25.Rd8 Rd8 26.Qe5 Rd1 27.Bd1 Qd8+–) 25...Rd2= 26.Rd2 Rd8 (26...Bd5!? 27.Ne5 f6=) 27.Qe5+– Qe7 28.g4 (28.Rd8!? Qd8 29.Bd3+–) 28...Rd2= 29.Nd2 Qd6 (29...Nd6 30.Nc4 Nc4 31.Qb8 Qf8 32.Qf8 Kf8 33.Bc4=) 30.Qc3 (30.Nc4 Qe5 31.Ne5 Ne7+–) 30...Ne7= 31.Bf3 Bf3 32.Nf3 f6 (32...Qd8 33.Qd4 Qc7 34.Ne5=) 33.Nd4 Kf7 34.Qc2 g6 35.Qe4 Qd5 (35...e5!? 36.Nc6 Nc6 37.bc6 Qc5=) 36.Qd5+– ed5 (36...Nd5? 37.Nc6+–) 37.Kg2 Ke8 38.Kg3 Kd7 39.h4 Kd6 40.Kf4 White prepares g5 40...Kc5 41.g5 fg5 (41...Ng8 42.f3+–) 42.Kg5 (better 42.hg5 Ng8 43.f3+–) 42...Nc8? (better 42...Nf5 43.Nf5 gf5=) 43.Kh6+– Nd6? (43...Kd6+–) 44.Kh7 Nb5 (44...Ne4 45.f4 g5 46.fg5 Ng3+–) 45.Nb5 Kb5 46.Kg6 Kc5 47.h5 b5 48.h6 b4 49.h7 (49.h7 Kb5 50.h8Q Ka6 51.Qb8+–) 1–0. BeepBeepImAJeep – MrSuccess (2510), lichess.org, 2017.

11.Nd4 Rc8 12.cd5 Nd5 13.Nd2 e5=.

11.Nd4 Rc8 12.Bf3 Nc5 (better 12...Rc4!? 13.Nd2 Rc8-/+) 13.cd5= Nd5 14.Nc3 Bf6 15.Nd5 Bd5 16.Bd5 (16.Nc6 Bc6 17.Qd8 Rfd8 18.Bf6 gf6 19.Bc6 Rd2=) 16...Qd5= 17.Qe2 Bd4 18.Bd4 Nb3 19.Rad1 Nd4 (19...Qc4 20.Qc4 Rc4 21.Rd3 Nd4 22.Rd4 Rd4 23.ed4=+) 20.Rd4+= (worse 20.ed4 Rc4 21.Qa2 Rd8-/+) 20...Qb3 21.Rfd1 (21.Qd1 Qc3+=) 21...Rc2 (21...e5 22.Rd5=) 22.Qg4 (22.Qf3+=) 22...f5 (better 22...Ra2!?=) 23.Qg3+– f4 (23...Rcc8 24.h3+–) 24.Rf4 Rf2?? (better 24...Rfc8 25.Rfd4 Rc1+–) 25.Rf8 (better 25.Rd7 Qb2 26.Qf2 Qc1 27.Qf1 Qe3 28.Rf2+–) 25...Rf8=+ Threatening mate... how? 26.Rf1 (26.Ra1 Qb2 27.Re1 Qb4=) 26...Rf1 (worse 26...Qa4 27.Rf8 Kf8 28.Qd6 Kf7 29.Qd7 Kf6 30.Qd8 Kf5 31.Qf8 Kg6 32.Qe8 Kf6 33.Qd8 Ke5 34.Qc7 Kd5 35.Qc6 Ke5 36.Qc7 Kd5 37.Qc6 Ke5 38.Qc7=) 27.Kf1 Qc4 28.Kf2 Qa4 29.Qb8 Kf7 30.Qc7 Kf6 (better 30...Kg6=+) 31.Qf4?? (better 31.Qd8 Kf5 32.Qf8 Kg6 33.Qe8 Kf6 34.Qd8 Ke5 35.Qc7 Kd5 36.Qc6 Ke5 37.Qc7 Kd5 38.Qc6 Ke5 39.Qc7=) 31...Qf4–+ 32.ef4 Kf5 (better 32...e5 33.Ke3 Ke6–+) 33.Ke3 e5 (better 33...h6-/+) 34.fe5?? (better 34.g4 Kf6 35.f5-/+) 34...Ke5–+ 35.h3 Kd5 36.Kf4 (36.Kd3–+) 36...Kc5 37.Ke5 Kb5 38.Ke6 a5 39.Kf7 a4 40.Kg7 a3 41.Kh7 a2 42.g4 a1Q 43.g5 (43.g5 Qh1 44.g6–+). RichardSommer (2010) – Tarumba (2015), lichess.org, 2020.

11.Nc3 dc4 12.Ne4 Be4=.

11.Nbd2 Nd2 12.Qd2 dc4 13.Rac1 cd4 (13...Rc8 14.Rfd1 Bd5 15.Bc4 Bf3 16.gf3 cd4 17.f4 Bf6=; 13...Bd5 14.Qc2 cd4 15.Bd4 Nc5 16.Bc5 Bc5 17.e4 Bb7=) 14.Bd4 Rc8 15.Qc3 Bf6 16.Bf6 Nf6 17.Rfd1 Qe7+=.

11.Nbd2 Nd2 12.Qd2 dc4 13.Rad1 Bf6 14.dc5 Nc5 15.Qc2 Be4 16.Rd8 Bc2 17.Ra8 Ra8+=.

11.Nbd2 Nd2 12.Qd2 dc4 13.Rfc1=.

11.Nbd2 Nd2 12.Qd2 Bf6 13.Rfd1 White prepares a5 13...Qe7 (13...dc4 14.Rac1=) 14.a5 (14.dc5 Nc5 15.Bf6 Qf6=) 14...dc4= 15.Ne5 Be5 16.de5 Rfd8 17.Qc3 (17.f4 a6 18.ba6 Ba6= (worse is 18...Ra6 19.ab6 Ra1 20.Ba1+=)) 17...Nf8 (17...Qg5!? 18.g3 ba5 19.Ra5 a6=) 18.a6 Rd1 (18...Be4 19.Qc4 (worse is 19.Bc4 Qg5 20.Bf1 Ng6=) 19...Bd5 20.Qc2+=) 19.Rd1+/– Bd5 20.f3 Rd8 21.e4 (21.Bc4 Bc4 22.Rd8 Qd8 23.Qc4 Qd5 24.Qd5 ed5-/+) 21...Ba8 22.Rd6 Rd7 (22...Qd6 23.ed6 A pinning theme) 23.Bc4 h6 (23...Qh4 24.Qd2 Rd6 25.ed6+/– (25.Qd6?? Qe1 26.Bf1 Qe3 27.Kh1 Qf2–+)) 24.g3 (24.Qd3 Qh4+/–) 24...Kh7 (24...Rd8 25.Qd3 Rd6 26.ed6+/–) 25.Qd3 f6 (better is 25...Kg8!?+/–) 26.Rd7+– White is in command 26...Nd7 27.ef6 gf6 28.e5 Kg7 (28...f5 29.g4 Nf8 30.Kf1+–) 29.ef6 Nf6 30.Qe3 Qd6? (better is 30...Kf7+–) 31.Bf6 Kf6 32.Qh6 Ke7 (32...Kf7 33.Kg2+–) 33.Qg7 Ke8 34.Qg8 Ke7 (34...Kd7 35.Qa8 Qd4 36.Kg2 Qd2 37.Be2 Qe2 38.Kh3 Qf1 39.Kh4 Qd3 40.Qa7 Kd6 41.Qb6 Kd7 42.Qb7 Kd6 43.Qc6 Ke7 44.Qc7 Ke8+–) 35.Qa8 Qd4 36.Kg2 Qd2 37.Kh3 (37.Be2 Qe2 38.Kh3 Kf6+–) 37...Qh6+/– 38.Kg4 Qg6 39.Kf4 Qf6 40.Kg4 Qg6 41.Kh3 Qh6 42.Kg2 Qd2 43.Be2 Qe2 44.Kh3 Qf1 (44...Kf6 45.Qd8 (45.Qa7?! Qf3 46.Qh7 Qf1 47.Kh4 Qc4 48.g4 Qf4 49.Qh8 Kf7+–) 45...Kg6 46.Qe8 Kf6 47.Qb8+/–) 45.Kh4 Qc4 (45...Qb5 46.Qa7 Kf6 47.Qa8+–) 46.f4 (46.f4 Qb5 47.Qa7 Kf6 48.Qa8+–) 1–0. Graf,Michael – Schmidt,Axel, Staufer op, 1996.

11.Nbd2 Nd2 12.Nd2 cd4 13.Bd4 Rc8 14.cd5 Bd5 15.Bf3 Bf3 16.Nf3 A) 16...Nc5 17.Ne5 (17.Qe2= 17...Qc7=) 17...Bd6+=; B) 16...Bf6 17.Bf6 Nf6+=.

11.Nbd2 f5 12.a5 ba5 13.Qa4 a6=.

11.Nbd2 f5 12.Ne4 fe4= 13.Ne5 Ne5 14.de5 Bg5 15.Bg4 Rf5? (better 15...Qe7=) 16.Bf5+– ef5 17.cd5 Qd5 (17...Bd5 18.Qc2+–) 18.Qd5 (18.Qh5!? h6+–) 18...Bd5+– 19.Rfd1 Be6 20.a5 Kf7?? (better 20...ba5 21.Rd6 Kf7+–) 21.ab6+– (21.ab6 Be7 22.ba7+–) 1–0. BeepBeepImAJeep (2665) – DavidPrieto (1960), lichess.org, 2016.

11.Nbd2 f5 12.Ne5 Ne5+= 13.de5 a5 (13...Nd2 14.Qd2 dc4 15.Qc3=) 14.ba6 (14.Ne4 fe4 15.Bg4 Qd7=) 14...Ba6+= 15.Nb1 (15.Ne4 fe4 16.Qc2 Qc7+=) 15...f4 (15...Bc4!? 16.Bc4 dc4-/+) 16.f3+= Ng5 17.h4 (17.cd5 ed5 18.Ba6 Ra6=) 17...Nf7-/+ 18.ef4 Bh4 19.Kh2 (19.Nd2 Bg3 20.cd5 Qh4 (20...Qd5?! 21.Ba6 Ra6 22.Qe2-/+) 21.Re1 Qh2 22.Kf1 Qh1) 19...Nh6 (19...Bc4 20.Bc4 dc4-/+) 20.g4? (better is 20.cd5!? Be2 21.Qe2 ed5 22.Qd2-/+) 20...Rf4–+ 21.cd5 (better is 21.Bc1 Rd4 22.Qc2 Bc4 23.Bh6 gh6 24.f4–+) 21...Bf2!? Do you see the mate threat? 22.Rf2 Decoy theme: f2 (22.g5 Qg5 23.Qd4 Qg3 24.Kh1 Qh3) 22...Qh4?? (22...Ng4 23.Kg1 Nf2 24.Kf2 Qh4 25.Kg2 Qg5 26.Kf2 Rh4–+) 23.Kg1 (23.Kg2 Ng4 24.Qh1 Qf2 (24...Nf2?! 25.Qh4 Rh4 26.Ba6 Ra6 27.Kf2 ed5 28.Bc3–+) 25.Kh3 Ne3 26.Ba6 Qh4) 23...Ng4 Threatening mate... how? 24.Rg2 (24.fg4 Exploits the pin 24...Rf2 Eliminates the defender f2) 24...Ne3 25.Qd2 Ng2 26.Kg2? (26.Ba6 Ne1 27.Be2 Qg3 28.Kf1 Rh4 29.Qh6 Rh6 30.Bc4 Qg2 31.Ke1 Rh1 32.Bf1 Rf1) 26...Raf8?? (better is 26...Be2 27.Qe2 Qg5 28.Kf1 Qg3–+) 27.Qf4?? (27.Ba6 Rf3 28.Kg1 Rg3 29.Qg2 Rg2 30.Kg2 Rf2 31.Kg1 Qh2) 27...Qf4–+ (27...Qf4 28.Nc3 Be2 29.Ne2 Qf3 30.Kh2 Qe2 31.Kh1 Qb2 32.Rg1 Rf2 33.Rg7 Kg7 34.Kg1 Qd2 35.a5 Qe1; 27...Rf4 28.Ba6 ed5 29.a5 Qg5 30.Kf2–+) 0–1. Labahn,Wolfgang – Denecke,Tomas, Berliner Sommer, 1990.

11.Nbd2 Ndf6 12.a5 ba5 13.Nb3 dc4 14.Na5 Qb6 15.Bc4 Bd5 16.Bd5 Nd5 17.Qd3+=.

11.Nbd2 Ndf6 12.Rc1 Rc8 (12...a6 13.Ne4 Ne4 14.dc5 Nc5 15.Qc2 ab5 16.ab5 Bd6 17.Rfd1=) 13.Ne5 Nd2 14.Qd2 Ne4 15.Qd3 f6 16.Bg4 Qd6 17.cd5+=.

11.Nbd2 Ndf6 12.dc5 Bc5 (12...Nc5 13.Nb3 (13.Bd4 Rc8 14.Rc1 Qc7 15.Nb3 Rfd8 16.Be5 Bd6 17.Nc5=; 13.Ne5 Rc8 14.cd5 Bd5 15.Bf3 Qc7 16.Bd5 Nd5 17.Qg4=; 13.Rc1 Rc8 14.Bd4 Qc7 15.Qc2 Rfd8 16.Rfd1 a5 17.Nb3=; 13.Be5 a6 14.Nb3 Nb3 15.Qb3 Ne4 16.Bd4 Bf6 17.Rfd1=; 13.cd5 Bd5 14.Qb1 Re8 15.Rd1 Rc8 16.Nc4 Nfe4 17.Qc2=; 13.a5 ba5 14.Bc3 a4 15.Qc2 Rc8 16.Bd4 dc4 17.Bc4+=) 13...Rc8 14.Nc5 Bc5 15.cd5 Nd5 16.Qb3 Qe7 17.Rfd1=) 13.Ne4 Ne4 14.cd5 (14.Rc1 Rc8 15.cd5 Bd5 16.Qd3 Qe7 17.Nd4=) 14...Bd5 15.Qd3 Qe7 16.Nd4 Rfd8 (16...Bd6 17.Bf3=) 17.Bf3 f5 18.Rac1 Qf7 19.Rcd1 Rac8 20.h3 Be7 21.Qb1 Qg6 22.Rc1 Bc5 23.Rfd1 Bd4 24.Rc8 Rc8 25.Rd4 Nd2 (25...Nc3 26.Qd3 Na4 27.Rd5 ed5 (27...Nb2?? 28.Rd8 Qe8 29.Re8 Re8 30.Qc2+–) 28.Qd5 Kh8=) 26.Rd2= Bf3 27.Qf1 Bd5 28.Rd3 Rc2 (28...f4!? 29.ef4 Bc4+=) 29.e4+= fe4 (29...Be4 30.Rd8 Kf7 31.Rd7 Kf8 A) 32.Bg7? Ke8 33.f3 Kd7 34.fe4 Ke8–+ (34...Qg7?! 35.Qd3 Ke7 36.Qc2+=); B) 32.Ra7?? Rb2 33.f3 Bd3–+; C) 32.Rg7? Qh6–+; D) 32.Ba3 Ke8 33.Re7 Kd8 34.Ra7=) 30.Rg3+/– Qf5 31.Bg7 Kf7 32.Bh6 Qf6 33.Rg7 Ke8 34.Rg8 Kd7 35.Be3 (35.Bg5 Qe5+/–) 35...Qf7 (better is 35...Ra2!? 36.Bg5 Qb2=) 36.Rg3 Qf6 37.Qd1 Rc4 38.Qh5 Rc7 39.Qh7 Kc8 40.Qg8 Kb7 41.Rg4 Rd7 42.Kh2 Qf7 (42...Qe7 43.Qh8+–) 43.Qh8 Rc7?? (43...Qh7 44.Qa1 Kc8 45.a5 ba5 46.Qa3+–) 44.Bf4 (better is 44.Rg8 Qg8 45.Qg8+–) 44...Rc8 45.Qg7 Rf8?? (45...Qg7 46.Rg7 Ka8+–) 46.Bd6 1–0. Dopper,Johan – Koopmans,P, corr NLD–ch H, 1993.

11.Nbd2 Ndf6 12.Ne4 Ne4 13.Qc2 cd4 14.Bd4 Rc8 15.Bd3 f5 16.Rfc1 Nc5 17.Bc5=.

11.Nbd2 Ndf6 12.Ne5 cd4 13.ed4 (13.Bd4 Rc8=) 13...Bb4 (13...Rc8 14.a5+=) 14.Ndf3 (14.Ne4 Ne4 15.Qb3 Be7=) 14...Nc3 (14...Rc8 15.Qb3 Bd6 16.Rfc1=) 15.Qc2 (better is 15.Bc3!? Bc3 16.Rc1+=) 15...Ne2+= 16.Qe2 dc4 17.Qc4 Ba5 (17...Nd5 18.Rfc1+=) 18.Nc6 Bc6 19.bc6 (19.Qc6? Rc8 20.Qb7 Rc7–+) 19...Qd5 (19...Qc7 20.Rfc1=) 20.Qc2 (20.Qd5!? Nd5 21.Rfc1+=) 20...Rfc8+= 21.Rfc1 Qh5 (21...Rc7 22.Ne5+=) 22.Ba3 Nd5 23.Qc4 Qg4 (23...Rd8 24.c7 Rdc8 25.Bd6=) 24.Bd6 White intends c7 24...Nf4 25.g3 (25.Bf4 Qf4 26.Qe2 Qd6=) 25...Nd5 26.Ne5 (26.Qd3 f6 27.Kg2 Qh5=) 26...Qh3 (26...Qg5 27.c7 Qf6 28.Qc6=) 27.c7 (27.Qb3=) 27...h5 (27...Bd2 28.Rc2 Bg5 29.Qc6+/–) 28.Qc6 (better is 28.Qd3+/–) 28...h4? (better is 28...Qf5+=) 29.Qd7 hg3 30.Qf7 Kh7 31.Qg6 Kg8 32.fg3 (32.Qg3 Qg3 33.hg3 Bc3+/–) 32...Bd2 (32...Bc3 33.Qf7 Kh8 34.Rc3 Nc3 35.Re1+/–) 33.Rf1 (33.Qf7 Kh7 34.Rd1+–) 33...Ne3? (better is 33...Be3 34.Kh1 Bd4+/–) 34.Rf2+– Bc3 35.Qd3 (better is 35.Rb1!?+–) 35...Ba1+/– 36.Qe3 Rf8?? (better is 36...Qh5 37.Kg2 a6+–) 37.Rf8 Rf8 1–0. DEFFM – Piscomontano, freechess.org, 2018.

11.cd5 Bd5 12.Nbd2 Rc8 13.Ne4 Be4 14.dc5 Nc5 15.Qd8 Rfd8 16.Bd4 Nb3 17.Ra2 Rc2 18.Rc2 Bc2 19.Ne5 Nd4 20.ed4 Ba4 21.Nc6 Re8 22.Na7 Bf6 23.Nc6 Bc2 24.Rc1 Be4 25.Bf3 Bf3 26.gf3 Bg5 27.Ra1 h6 28.Ra6 Bd8 29.Nd8 Rd8 30.Rb6 Rd4 31.Rb8 Kh7 32.b6 Rb4 33.b7 Kg6 34.Kg2 h5 35.h4 Kf5 36.Kg3 Kf6 37.f4 Rb3 38.f3 Kf5 39.Rf8 Rb7 40.Rg8 Kg6 41.Rh8 Rb5 42.Rf8 Kf6 43.Rh8 g6 44.Rh7 Rb7 45.Kh3 Ke7 46.Kg3 Kd6 47.Kh3 Kc5 48.Kg3 Kd4 49.Kh3 Ke3 50.Kg3 Ke2 51.Rg7 Rd7 52.Rh7 Kf1 53.Rg7 Ke2 54.Rh7 Kd3 55.Rg7 Kd4 56.Rh7 e5 57.fe5 Ke5 58.Rg7 Kf6 59.Rg8 Rd1 60.Rc8 Rg1 61.Kf2 Rh1 62.Kg3 Re1 63.Rc5 Re5 64.Rc6 Kf5 65.Rc4 Kf6 66.Rf4 Rf5 67.Rd4 Ke5 68.Re4 Kd5 69.Re7 Kd6 70.Re1 Rd5 71.Kf4 Rf5 72.Kg3 g5 73.hg5 Rg5 74.Kh4 Rf5 75.Kg3 f6 76.f4 Ra5 0–1. Abdullaevich (1615) – dande76, lichess.org, 2018.

10.Na3 Be4 11.Qc4 Bf3 1-0. onur604 (2320) - pernekhanshymkent (2190), Casual Rapid game, lichess.org, 2021.

10.a4 a6 11.Na3+=.

10.a4 Nbd7 11.Na3= Qc7 (11...a6 12.Nc4 Qc7 13.Rfb1=) 12.Nc4 Nd5 (12...a6 13.Nfe5=) 13.a5+= Nb4 14.Qb3 Bd5 15.Rfc1 (15.d3 ba5 16.e4 Bc4 17.dc4 a6=) 15...Bf6 (15...ba5 16.Qa3=) 16.Bf6+= Nf6 17.Qa3 (17.d4 Rfc8+=) 17...Ng4 (17...Rfd8 18.d4+=) 18.d4 Bc4?? (better is 18...Rfc8+=) 19.Rc4+– (19.Bc4?! Rac8+/–) 19...Rac8 (19...Qe7 20.ab6 a6 21.Rcc1+–) 20.ab6 (20.ab6 ab6 21.dc5 Nh2 22.Qb4 (worse is 22.Rb4 Nf3 23.Bf3 Qc5+–; worse is 22.Nh2 bc5 23.Qa7 Qd6+–) 22...bc5 23.b6+– (23.Nh2?! cb4 24.Rc7 Rc7+–)) 1–0. Grott,Peter – Suermann,Uwe, DESC, 2000.

10.Rc1=.

10.Qc4 a6 11.Nc3=+.

10.Ng5 Nbd7+=.

10.a4 Rc8 11.d3 Bd6 12.Nbd2 Qc7 (12...Re8 13.Bc3=) 13.h3 (13.cd5 ed5 14.a5 Rfe8=) 13...Rfd8 14.a5 Ne5 (14...ba5 15.cd5 Nd5 16.Nc4+=) 15.ab6 ab6 16.Ra7 (16.Be5 Be5 17.Ne5 Qe5+=) 16...Ng6 (16...Ra8!? 17.Rfa1 Ra7 18.Ra7 Ra8 19.Ra8 Ba8 20.Be5 Be5+=) 17.Rfa1 Qe7 18.Bc3 (18.R1a2 e5+=) 18...Bb8 19.R7a4 Nh5 (19...e5 20.R4a2+=) 20.Qb2 Qc7 21.d4 (21.R1a2!?+/–) 21...cd4= 22.Bd4 e5 23.Ne5 Ne5 24.Bh5 Nc4 (24...Nd3 25.Qc3 Qh2 26.Kf1 dc4 27.Bf3 Bf3 28.Nf3 Qh1 29.Ke2 Qg2 30.Rf1-/+) 25.Nc4 (25.Qc3 Qh2 26.Kf1 Nd2 27.Qd2 Qh1 28.Ke2 Qg2+=) 25...Qh2-/+ 26.Kf1 dc4 Opening the d–file gets Black a lot of play 27.Bf3 Bf3 28.gf3 Qh3 29.Ke2 Qf5 30.Qc3 (30.Rc1 Qd3 31.Ke1 Rd6=) 30...f6 31.Rg1 (31.Ra6 Qb5 32.Rb6 Qd5-/+) 31...Kh8 (31...Qb5 32.Rb4 Qd5 33.Bf6 Qd3 34.Qd3 cd3 35.Kd1-/+) 32.Ra6-/+ Be5 (32...Rd6!? 33.Rb6 Rb6 34.Bb6 Qb5-/+) 33.Be5+= fe5 34.e4 (34.Rb6!? Rd3 35.Qb4-/+) 34...Qf6–+ 35.Ra7? (better is 35.Rd1–+) 35...Rd3 36.Qc1 (36.Qc2 Qf3 37.Ke1 Qe4 38.Kf1 Rcd8–+) 36...Qf3 37.Ke1 Rcd8 38.Ra1 Qe4 (better is 38...c3 39.Kf1 Rd1 40.Qd1 Rd1 41.Rd1 Qd1 42.Kg2 c2–+) 39.Kf1 R3d7 (39...R3d5 40.Rb1–+) 40.Qe1 Qd3 41.Kg2 (41.Qe2 Qh3 42.Rg2 Qc3–+) 41...Qg6 (41...Rd6 42.Qe3–+) 42.Kf1 Qd3 (better is 42...Qh5 43.Kg2 Rd3–+) 43.Kg2= Rf8 (43...Rf8 44.Qe5 Qf3 45.Kh2 Qf2 46.Rg2 Qf7–+; 43...Rd6 44.Qe3–+) 0–1. Farleigh,Richard – Kaliksteyn,Alexander (2405), World op Philadelphia, 1995.

10.a4 Bd6 11.cd5 Nd5 12.e4=+.

10.d3 a6 11.Nc3=.

10.d4 dc4 11.Nbd2= cd4 12.Nd4 Nc5 13.Nc4 Rc8 14.Bf3 Bf3 15.gf3 (worse 15.Nf3 Qd3 16.Rac1 Qc2 17.Rc2 Nd3=) 15...Qd5 16.Nc6 Qg5 (16...Bd8!?+=) 17.Kh1+– Rc7 18.Rg1 Qh4 19.Be5 Rd7? (19...Rc6 20.bc6 Rc8+–) 20.Qc3 Nd5 (20...Kh8 21.Ne7 Nd3+–) 21.Ne7 Re7 (21...Qe7 22.Rg7 Kh8 23.Rg8 Kg8 24.Rg1 Qg5 25.Rg5) 22.Rg7 (22.Rg7 Kh8 23.Rg8 Kg8 24.Rg1 Qg4 25.Rg4) 1–0. DEFFM – GuestZMFP, freechess.org, 2019.

10.d4 Qc7 11.Nbd2 Rac8 12.Rac1 Rfd8 13.Qa4 Ba8 14.Rfd1 Qb7 15.Ne1 (15.cd5 Nd5 16.e4 Nf4=) 15...Bd6 16.Bf3 (16.cd5 ed5 17.Nef3 Re8=) 16...Bb8 (16...Qb8 17.g3+=) 17.Nf1 Nf8?? (better is 17...cd4 18.cd5 e5 19.ed4 e4=) 18.dc5+– bc5 19.Bf6 gf6 20.cd5 ed5 (20...e5 21.Ng3 Bd6 22.Nf5+–) 21.Qg4 Ng6 22.Qf5?? (better is 22.Bd5 Qd5 23.Rd5 Bd5 24.f4+–) 22...Qb5 (22...Nh4 23.Qf6 Nf3 24.Nf3 Qb5 25.Qg5 Kh8 26.e4+=) 23.Bd5+/– Be5 24.Nf3 Qd7 25.Qd7 Rd7 26.Ba8 Rd1 27.Rd1 Ra8 28.N1d2 Rb8 29.Nc4 Rb4 30.Rc1 Ra4 31.Rc2 (31.Nce5?! fe5 32.Rc2 e4=) 31...Kf8 32.Kf1 (32.Nce5?! fe5 33.h4 f6= (worse is 33...Nh4 34.Ne5 Kg7 35.Rc5+/–)) 32...Ke7 33.Ke2 Kd7 34.Kd3 h6 35.g3 Kc6 36.Nfd2 Kb5? (better is 36...Bd6!?+/–) 37.Ne4+– Ba1 38.Ned6 Kc6 39.Nf7 Kd5 40.e4 Ke6 41.Nh6 Ne5 42.Ne5 fe5 43.Nf5 Ra3 44.Ke2 Ra4 45.f3 Ra5 46.h4 Rb5 47.h5 Bd4 48.g4 Kf6 49.Ne3 Rb1 50.Nf1 Kg5 51.Nd2 Rh1 52.Rc4 Kf4 53.Ra4 Rh2 54.Kd3 Rf2 55.Ra6 (better is 55.h6+–) 55...Rh2?? (better is 55...c4 56.Nc4 Rf3 57.Ke2 Rf2 58.Ke1 Rh2+=) 56.Rf6+– Kg5 57.Rf5 Kh6 58.a4 Rh1 59.Kc4 (59.Nb3!? Rd1 60.Ke2 c4 61.Nd4 Rd4 62.Re5 c3+–) 59...Ra1 60.Kb5 a6 61.Ka6 (better is 61.Kc6+–) 61...Ra4 62.Kb5 Rb4 63.Kc6 c4 64.Nf1 (64.Nc4!? Rc4 65.Kd6+/–) 64...c3+/– 65.Ng3 Rc4? (better is 65...c2!? 66.g5 Kg7=) 66.Kd5 Rc5 (better is 66...c2!? 67.g5 Kg7+/–) 67.Kd6 c2 68.g5 Kg7 69.Ne2 Ra5 70.f4 Ra6 (70...Ra1 71.Ke7 Bc5 72.Ke8+–) 71.Kd5 Ra5 72.Ke6 (better is 72.Kc4+–) 72...Ra6+/– 73.Kd5 Ra5 74.Kc4 Rc5 75.Kd3 c1Q 76.Nc1 Rc1 77.h6 Kh7 78.Rf7 Kh8 79.g6 Rc3 80.Kd2 Rc8 81.f5 Bc5 (81...Bb2 82.f6 Bc1 83.Ke2 Bh6 84.Rh7 Kg8 85.Rh6 Rc2 86.Kf3 Rc6 87.f7 Kg7+–) 82.Ke2 (82.f6 Bb4 83.Ke2 Rc2 84.Kf3 Rc6 85.Rh7 Kg8 86.f7 Kf8 87.Rh8 Ke7 88.f8Q Ke6 89.Qb4 Rc3 90.Qc3 Kf6 91.g7 Ke7 92.g8Q Kf6 93.Qg7 Ke6 94.Qce5) 82...Bf8 83.g7 (83.Rf8 Rf8 84.g7 Kg8 85.gf8R Kf8 86.f6 Kg8 87.Ke3 Kf7 88.h7 Kf6 89.h8Q Ke6 90.Qc8 Kd6 91.Qd8 Ke6 92.Qd5 Kf6 93.Qd6 Kg5 94.Qe5 Kg6 95.Qf5 Kg7 96.e5 Kh8 97.e6 Kg7 98.e7 Kh6 99.e8Q Kg7 100.Qef8) 83...Kg8 (83...Bg7 84.hg7 Kg8 85.Rf8 Rf8 86.gf8R Kf8+–) 84.Rf8 (84.h7 Kf7 85.g8Q Ke8 86.h8Q Rc2 87.Kd3 Rc3 88.Kc3 Kd7 89.Qhh7 Be7 90.Qe6 Kc7 91.Qhe7 Kb8 92.Qg8) 84...Rf8 85.gf8Q Kf8 86.f6 Kg8 87.Kf3 Kf7 88.h7 (88.h7 Ke6 89.h8Q Kd6 90.Qb8 Kc6 91.f7 Kc5 92.f8Q Kd4 93.Qc7 Kd3 94.Qfd6) 1–0. Nemeth,Laszlo1 (1985) – Botos,Jozsef (1955), HUN–chT2 Erkel, 2007.

10.d4 Qc7 11.Nbd2 Rac8 12.Ne5 cd4=+ 13.ed4 dc4 (13...Ne5 14.de5 Nd7 15.Qc3-/+) 14.Ndc4 Be4 (14...Nd5 15.g3=+) 15.Qd2= Qb7 (15...Ne5 16.de5 Rfd8 17.Qe3+=) 16.f3+= Bg6 (16...Bd5 17.Ne3+=) 17.Nc6+– Nb8? (better 17...Rc6 18.bc6 Qc6+–) 18.Ne7+– Qe7 19.Ba3 Qb7 20.Bf8 Rf8 21.Ne5 Rc8 22.Rac1 Rd8 23.Nc6 (23.Qb4!? Nd5 24.Qa3 Bh5+–) 23...Nc6 24.bc6 Qc7 25.Qb2 (25.Rc4 e5+–) 25...Nd5 26.Ba6 (26.Rfe1 h5+–) 26...h5 (26...Rd6 27.Bb5+–) 27.Rfe1 h4 28.Bb7 (28.h3 Bf5+–) 28...h3 (better 28...Nf4!?+–) 29.g3+– (worse 29.gh3 Nf4+–) 29...a5 30.Qe2 Nb4 (30...Rd6 31.a3+–) 31.Red1 (31.Qe5 Rd6 32.Qd6 Qd6+–) 31...Nd5 32.Rd2 Rd6 33.Qf1 Bf5 (better 33...Ne7+–) 34.g4 Bg6 35.Qh3 Rd8 36.Qg3 Nf4 37.Kh1 Rd5 38.h4 Bh7 (38...f6 39.Qg1+–) 39.h5 g5 (39...Kf8 40.Qh4+–) 40.Qh2 Rd8 (40...b5 41.h6+–) 41.a4 e5 (41...Kf8+–) 42.de5 Rd2 (42...Rd3 43.Rd3 Bd3 44.Qd2+–) 43.Qd2 Qe5 (43...Bd3+–) 44.c7 Bf5 45.gf5 Nh5 46.Qg5 Ng7 (46...Kh7 47.Qh5 Kg7 48.c8Q Qe8 49.Qe8 Kf6 50.Rc7 b5 51.Rf7) 1–0. GuestXTFJ – Kosat, freechess.org, 2019.

10.d4 Rc8 11.Nbd2 cd4 12.Bd4 Qc7 13.Rac1 e5 14.Bb2 Rfe8 15.Qf5 Will e5 fall? 15...g6 16.Qh3 Qb8 17.Rfd1 e4 18.Ng5 Bf8? (18...Ne5 19.Qh4 Kg7 20.cd5 Rc1 21.Rc1 Bd5 22.Nde4+/–) 19.Nde4! h6?? (19...de4 20.Rd7 Combination; 19...Re4 20.Ne4 Combination; 19...Ne4 20.Qh7) 20.Nf6+– Nf6 21.Bf6 Qd6 22.Bd4 Bg7 (22...Qb4 23.Nf7! Kf7 24.Qf3 Kg8 25.Qf6+–) 23.Nf3 (better is 23.Bg7 Kg7 24.Qh6 Kf6+–) 23...Rc7 24.Qg3 (better is 24.Bg7 Kg7 25.Nd4 Qe5+–) 24...Qe7 (24...Qg3 25.hg3 (worse is 25.fg3 Bd4 26.Nd4 Re3+–) 25...Rec8 26.Ne5+–) 25.cd5 (better is 25.Bg7 Kg7 26.Nd4 Qe5 27.Nf5 Kf8+–) 25...Rc1 26.Rc1 Bd5 27.Bg7 Kg7 28.Qc7 Qa3 29.Qc3 Qc3 30.Rc3 Re7 31.a3 1–0. Nemeth,Laszlo1 (1980) – Gonczol,Gabor (1945), HUN–chT2 Erkel, 2006.

10.cd5 Nd5 11.Nc3 Nb4=.

10.cd5 Nd5 11.Nc3 Bf6 12.Rfd1 Nb4 13.Qb3 Nd5 14.Rac1 Nc3 15.Bc3 Bc3 16.Qc3 a6= 17.a4 ab5 18.ab5 Bd5 19.d4 Qf6 20.Qd3 cd4 21.Qd4 Nc5 22.Qf6+= gf6 23.Nd4 Ra2 24.Bf1 Rb2 25.f3 e5 26.Nc6 Be6 27.e4 Kg7 28.Ra1 h6 29.Ne7 Nb3 30.Ra6+=. pcmvr (2810) – tcc (2560), net–chess.com, 2007.

10.cd5 Nd5 11.e4 Nb4=.

11.a4 dc4 12.Qc4 Bd6 13.Nbd2=.

11.a4 Bd6 12.h3 (12.a5 ba5 13.cd5 Nd5=) 12...dc4 (12...a6 13.Nc3+=) 13.dc4 (13.Qc4 Ne5 14.Be5 Be5 15.Ne5 Qe5=) 13...Be4 14.Qb3 (14.Qc3 a6+=) 14...e5 (14...a6 15.ba6 Ra6 16.Nc3+=) 15.Rd1 (15.Nc3 Rfd8=) 15...Rad8 (15...a6 16.Nc3=) 16.Nc3 Bb7 (16...Bf5 17.Nd5 Nd5 18.cd5=) 17.Nd2 (17.Nd5 Nd5 18.cd5 e4+=) 17...e4 (17...a6 18.ba6 Ba6 19.Nb5 Bb5 20.ab5=) 18.a5 Rfe8 (18...Bh2 19.Kh1 Be5 20.ab6 ab6 21.Ra7=) 19.a6 (19.ab6 Bh2 20.Kh1 ab6+=) 19...Ba8 (19...Bc8 20.Nd5 Nd5 21.cd5 Bh2 22.Kh1+=) 20.Qc2 The pressure on e4 grows (20.Nd5 Nd5 21.cd5 Bh2 22.Kh1 Bd6+=) 20...Ne5 (20...Bh2!? 21.Kh1 Be5=) 21.Nce4 Be4 (21...Ne4 22.Ne4 Be7 23.Nc3+/–) 22.Ne4 Ne4 23.Qe4 Nd3 24.Qd3 Decoy to d3 (24.Rd3 Re4) 24...Bh2 25.Kh1 Rd3 26.Rd3 Be5 27.Be5 Qe5 28.Rad1 Kf8 (28...Qb2 29.Rd8 Kf8 30.R8d2+=) 29.Rd7+/– Re7 30.Rd8 (30.Bf3 Qc3 31.Rb7 Qc4+/–) 30...Re8 31.Bf3 (31.R8d6 Qb2 32.R1d2 Qc1 33.Kh2 Ke7+=) 31...Rd8= 32.Rd8 Ke7 33.Ra8 Qc7? (33...Qa1 34.Kh2 Kd6 35.Ra7 Qe5 36.g3 Qf6+–) 34.Bb7+– g5 (34...Qe5 35.Ra7 Qb8 36.Ra8+–) 35.Ra7 h5 36.Ra8 (36.Kg1 Qb8 37.Ra8 Qd6+–) 36...g4 (36...Qd6 37.Ra7 Qc7 38.Kg1+–) 37.hg4 (37.hg4 hg4 38.Ra7+–) 1–0. Bonetti,Shane (2005) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

11.Nc3 dc4 12.dc4 Bd6=.

11.Nbd2 a6 12.ba6 Ra6 13.cd5 ed5 14.Rfb1=.

11.Nbd2 Rad8 12.a4 Ne8 (12...Bd6 13.a5=) 13.a5+= Nd6 14.Qb3 (14.a6 Bc8+=) 14...Nc8 (14...ba5 15.Qa4=) 15.Ra4 Bf6 16.Rfa1 (16.ab6 ab6 17.Rfa1 Rfe8+=) 16...d4 (16...Bb2 17.Qb2 e5 18.ab6 Ndb6 19.R4a2+= (worse is 19.Ne5 Rfe8 20.Nef3 Na4 21.Ra4 dc4 22.dc4 Qd6+=)) 17.ab6 ab6 18.e4 (18.Qc2 de3 19.fe3 Bb2 20.Qb2 e5+=) 18...e5 (18...Be7 19.Qd1=) 19.Nf1 (19.Qd1 Be7+=) 19...g6 (19...Nd6 20.Bc1=) 20.Bc1 Bg7 21.Ng3 h6 (21...Nd6 22.Ra7+=) 22.Qd1 Nf6 (22...Nd6 23.Bd2+=) 23.h3 (23.Bd2 Nd7+/–) 23...Nd6 24.Bd2 (24.Ra7 Ra8+=) 24...Ra8 25.Ra8 Ra8 26.Ra8 Ba8 27.Qa1 Bb7 28.Nh2 Kh7 29.Ng4 (29.Qd1 Qe7=) 29...Ng8 (29...Ng4 30.Bg4 h5 31.Bf3=) 30.Nh2 (30.Bf3 f5 31.ef5 gf5 32.Bb7 Qb7=) 30...Nf6 (30...f5 31.ef5 gf5 32.Nh5=) 31.Bg4 (31.Qd1 Bc8=) 31...Ng4 32.hg4 f6 33.Qa7 Nc8 34.Qa3 Ne7 (34...Qd7 35.Qb3+=) 35.f3 (35.Qc1 Bc8=) 35...Bc8 36.Kf2 (36.Nhf1 Qd6+=) 36...Bb7 (36...Be6 37.Kg1+=) 37.Nhf1 (37.Kg1!?=) 37...Nc8 38.Nh1 Ne7 (38...Qf7 39.Kg1+=) 39.Nfg3 (39.Nhg3 Qd6+=) 39...Nc8 (39...Qd6 40.Kg1+=) 40.Ke2 (40.Nf1 Nd6+=) 40...Ne7 (40...Nd6 41.Nf2+=) 41.Nf2 (41.Kf2 Qd6+=) 41...Bc8 (41...Qd7 42.Qc1=) ½–½. Alonso,F – Georg,D, American op USA, 1996.

11.Nbd2 Rad8 12.Rfc1 Bd6=.

11.Nbd2 Rad8 12.Rfe1 Rfe8 13.a3 Bd6 14.h3 (14.Rac1 a6=) 14...h6 15.d4 (15.Rab1 e5=) 15...e5 (15...cd4 16.Nd4 Nc5 17.cd5 Bd5 18.Bf3=) 16.cd5 (16.de5 Ne5 17.cd5 Bd5=) 16...ed4 (16...e4 17.Ne5 Bd5 18.Nd7 Nd7 19.Red1=) 17.ed4 (17.e4 Re7=) 17...cd4 (17...Nd5 18.Bc4=) 18.Qc7 Bc7 19.Rac1 (19.Nd4 Bd5 20.Rad1 Nc5+=) 19...Bf4 (19...Nd5 20.Bc4 Bf4 21.Re8 Re8 22.g3 Bd2 23.Nd2=) 20.g3+= Bd6 (20...Bd2 21.Nd2 Nc5 22.Bd4 Rd5 23.Nf3=) 21.Nd4 Bd5 22.Nc6 Ra8 (22...Rc8 23.Bf3+=) 23.Bf1 (23.Bc4 Re1 24.Re1 Bc4 25.Nc4 Bc5+=) 23...Re1= 24.Re1 a6 25.Ne7 (25.Nd4 ab5 26.Nb5 Re8 27.Re8 Ne8+=) 25...Be7= 26.Re7 ab5 27.Bb5 Be6 28.Bf6 (28.Nc4!?=) 28...Nf6+= 29.a4 (29.Bc4 Ra3 30.Be6 fe6 31.Re6 b5+=) 29...Bh3 (29...Nd5 30.Bc6 Rc8 31.Re8 Re8 32.Be8 Bh3 33.Bc6-/+) 30.Bc4 (30.Nc4!? Nd5 31.Re5+=) 30...Ra4-/+ 31.Kh2 (31.Rb7 Nd7-/+) 31...Bf5 (31...Be6 32.Be6 fe6 33.Re6–+) 32.Bb3 (32.Bf7 Kf8 33.Rc7 b5-/+) 32...Rd4–+ 33.Rf7 Kh7 34.Nf3? (better is 34.Nf1–+) 34...Rd3 35.Nh4 Rb3 36.Nf5 Kg6 37.Nd6 (37.Nd4 Rd3 (37...Kf7?! 38.Nb3 b5 39.Kg2–+) 38.Nc6 Ng4 (38...Kf7?! 39.Ne5 Ke6 40.Nd3–+) 39.Kh3 Kf7 40.Kg4 Rc3 41.Ne5 Ke6–+) 37...Rd3 (37...Rd3 38.Rf6 Kf6–+) 0–1. Gross,Wilhelm – Merten,Rainer, xxviii/28, 1996.

11.cd5 Bd5 12.Nc3 Bb7=.

10.dc4 a6 11.Nc3=.

10.dc4 Qd1 11.Rd1 Rd8 12.Nc3 Nbd7 13.Rd2 Ng4 14.Rad1 Nge5 (14...Ngf6!?+=) 15.Ne5+/– Ne5 16.Nd5 ed5 17.Be5 dc4? (better is 17...Bd6 18.Bd6 Rd6 19.cd5 f5+/–) 18.Rd8?? (better is 18.Rd7 Rd7 19.Rd7+–) 18...Rd8+= 19.Rd8 Bd8 20.Bc4 Kf8 21.a4 Ke7 (21...Be4 22.Bd6 Ke8 23.h3=) 22.Bb8 f6 23.Ba7 Bc7 24.a5 ba5 25.Bc5 Bd6 26.Bd4 a4 27.f3 Bb4 28.Kf2 Kd6 29.Ke2 a3 30.Kd3 h5 31.Kc2 h4 (better is 31...Ke7!?+/–) 32.Kb3+– Bc5 33.h3 (better is 33.Bc5 Kc5 34.Be2+–) 33...Bd5?? (better is 33...Bc8+/–) 34.Bc5+– Kc5 35.Bd5 a2 36.Ka2 Kd5 37.Kb3 Kc5 38.Ka4 Kc4 (38...Kb6 39.e4 Ka7+–) 39.b6 Kd3 40.b7 Ke3 41.b8Q 1–0. Franke,Roland (1990) – Patola,E (1945), Dresden GER, 2013.

10.dc4 Qd1 11.Rd1+= Rd8 12.Rd8 Bd8 13.Nc3 Nbd7 (13...a6 14.Rd1 Bc7 15.Bd3+=) 14.Rd1 Bc7 15.h3 (15.e4 a6+=) 15...Rd8 16.Kf1 Nf8 (16...a6 17.ba6 Ba6 18.e4+=) 17.Rd8+/– Bd8 18.g4 (18.Bd3 Bf3 19.gf3 Bc7+/–) 18...Bf3 (18...Bc7!?+=) 19.Bf3+/– Bc7 20.Bc6 (20.g5 N6d7+/–) 20...h6 (20...Be5 21.f4 Bc3 22.Bc3+/–) 21.f4 (21.f4 e5 22.f5+/–) 1–0. van Rooijen – von Rosenberg, ECC3.032, 2003.

10.dc4 Qd1 11.Rd1 Rd8 12.Rd8 Bd8 13.Ng5 (13.Nc3 a6+=) 13...h6 14.Bf3 Bf3 15.Nf3 Nbd7 16.Nc3 Bc7 17.Rd1 Rd8 (17...Be5 18.e4=) 18.e4 e5 (18...Kf8 19.Kf1+=) 19.Re1 (19.Kf1 h5+=) 19...Re8 (19...Bd6 20.Nd5+=) 20.Nh4 (20.Nd5 Bd6+=) 20...g6 (20...Ra8 21.Nd5 Nd5 22.ed5+=) 21.Nf3 Bb8 22.Nd2 (22.Rd1 Rd8+=) 22...Kg7 (22...Rd8 23.Rd1+=) 23.Rd1 Nf8 24.Nf1 (24.Nd5 Bd6+=) 24...Ne6 25.Ne3 Nd4 26.f3 Bc7 ½–½. Stubbs,S – Isgro,T, Telecomm, 1995.

10.dc4 Nbd7 11.Qc2 Qc7=.

10.dc4 Nbd7 11.Nc3 a6 12.a4 (12.Qc2 Qc7=) 12...ab5 13.ab5 Ra1 14.Qa1 Qc7 15.Rd1 Bd6 16.h3 Ne5 17.Ne5 Be5 18.f4 Bd6 19.Na2 Ra8 20.Bf6 gf6 21.Qb2 f5 (21...e5 22.Bf3 Bf3 23.gf3 ef4 A) worse is 24.Qf6 A1) 24...Ra2 25.Rd6 (worse is 25.Qd6 Qd6 26.Rd6 fe3-/+) 25...Ra1 26.Kg2 (26.Qa1?! Qd6 27.e4 Qd2=) 26...Ra2 27.Kf1 Ra1 28.Ke2 (28.Qa1?! Qd6 29.Qa8 Kg7 30.Qa1 Kg6 31.Qb1 Kh6+=) 28...Ra2 29.Kd1 Ra1 30.Kc2 (30.Qa1?! Qd6 31.Ke2 fe3=) 30...Ra2 31.Kb1+–; A2) worse is 24...fe3 25.Rd6 (worse is 25.Qd6 e2 26.Re1 Qd6 27.Re2 Qd4 28.Kh2 Qc4 29.Rg2 Kh8–+) 25...e2 26.Kf2+–; A3) 24...Be5 25.Qf5 fe3-/+ (25...Ra2? 26.Qg5 Bg7 27.Rd8 Qd8 28.Qd8 Bf8 29.Qg5 Bg7 30.Qf4+–); B) 24.e4=) 22.Nc3 Rd8 23.Bf3 (23.Qc2 Be7=) 23...Bf3 24.gf3 Bf8 25.Rd8 (25.Rd2 Rd2 26.Qd2 Bg7=) 25...Qd8 26.Qc2 ½–½. Van Esbroeck,Dirk – Scarcez,Stephane, corr Belgium T 2–065, 1995.

10.dc4 Nbd7 11.Nc3 Qc7=.

10.dc4 Nbd7 11.Nbd2 Qc7 12.Qc2 h6 13.Rfd1 Rfd8 14.a4 a5 (14...a6 15.Ra3=) 15.Bd3 Bd6 16.Ne4 Ne4 17.Be4 Be4 18.Qe4 Nf6 (18...Nf8 19.Rab1+=) 19.Bf6+– gf6 20.Qh4 Kg7 21.Qh5 (21.Qg4 Kh7+=) 21...Be7 22.h3 (22.Qg4 Kh7+=) 22...Rd1 (22...f5 23.Rab1=) 23.Rd1 Rd8 ½–½. tsodikovich (1790) – drpat23 (1830), gameknot.com, 2018.

10.dc4 Nbd7 11.Ne5 Ne5+= 12.Be5 Nd7 (12...Ne4 13.Bd3+=) 13.Bb2= Qc7 14.Bf3 Bf3 15.Qf3 Bd6 16.Nd2? (better is 16.Qh5=) 16...Bh2-/+ 17.Kh1 Be5 18.Be5 Ne5 19.Qg3 Rac8 20.f4 (20.Rad1 f5-/+) 20...Rfd8 21.Ne4? (better is 21.Rad1 Nd3 22.Nf3–+) 21...Nc4 22.Qh3 (22.Rad1 f5 23.Ng5 Rd1 24.Rd1 h6–+) 22...Rd3 23.Rf3 (23.Rac1 Re3 (23...Ne3?! 24.Rce1-/+) 24.Nf6 gf6 25.Qg4 Kh8 26.Rc4 Rg8–+) 23...Nd2 (better is 23...Qb7 24.Nf2 Rd2–+) 24.Ng5 (24.Nd2 Rd2 25.f5 ef5 26.Rf5–+) 24...h6 25.Ne6 Qd7 26.Rg3 (26.Ng7 Qh3 27.Rh3 Kg7–+) 26...Qe6 27.f5 (27.Qe6 fe6 28.Rh3 Ne4–+) 27...Qf6 (better is 27...Qe5 28.Rg1 Ne4 29.Rf3–+) 28.Rd1 (28.Re1 Ne4 29.Rf3 Rd2–+) 28...Ne4 29.Rd3 Nf2 (29...Nf2 30.Kh2 Nh3 31.gh3 c4–+) 0–1. Vieira,M J Hegediro (1670) – Domingues,Jair Vicente (1995), Circuito IRT Sub–2200: CXSSP, 2016.

10.a4 a6 11.Nbd2 a5 12.Qc2 Re8 13.Rfd1 Rc8 14.Nf1 Bd6 15.Ng3 Qc7 16.Bc3 e5 (16...Bg3 17.hg3 e5 18.cd5 Nd5 19.Rac1=+) 17.cd5 Nd5 18.Ne4 Bf8 19.Qb3 (19.Bb2 Nb4 20.Qd2 Red8=) 19...h6 (19...c4!? 20.dc4 Ne3 21.fe3 Be4=+) 20.Rac1 Kh8 21.Bb2 N7f6 22.Ned2 Qb8 23.Nc4 Will e5 fall? 23...Bd6 24.e4 Nf4 25.Bf1 Bc7 26.g3 Ng6 27.Bh3 Rcd8 28.Bf5 (28.Nb6 Bb6 29.Qf7=) 28...Bc8= 29.Bc8 (29.Re1 Re7=) 29...Qc8 30.Ne3 Qe6 31.Qe6 Re6 32.h4 Kh7 33.g4 (better 33.Nf5=+) 33...Red6?? (better 33...Nf4 34.g5 Ne2 35.Kf1 Nc1 36.Bc1 Nd7-/+) 34.h5 (better 34.Ne5!? Nf4 35.Nf7 Ne2 36.Kf1 Nc1 37.Nd6 (37.Bc1?! Rd3 38.Nd8 Rd1 39.Nd1 Bd8+-; 37.Rc1?! Rd3 38.Nd8 Bd8+-) 37...Nd3 38.Bf6 gf6 39.Rd3 Bd6 40.Ke2+-) 34...Nf4+/- 35.Be5 Ne2 36.Kg2 Nc1 37.Bd6 (better 37.Rc1!? R6d7 38.Bf6 gf6 39.d4 cd4 40.Nd5 Rd5 41.ed5=) 37...Rd6= 38.Rc1 Rd3 39.e5 Nd5 (39...Re3 40.fe3 (40.ef6? Re4-+) 40...Ng4 41.Rg1=+) 40.Nd5= Rd5 41.Re1 c4 42.Re4 (42.Rc1!? Rc5 43.Rc3+=) 42...Rc5=+ 43.Ne1 (43.Re2!?=+) 43...Be5-/+ 44.Nc2 Bf6 45.f4 g6 46.hg6 Kg6 47.Kf3 (better 47.Re8 Rd5 48.Ne3=+) 47...Rd5?? (better 47...Rc8-/+) 48.Rc4+/- Rd3 49.Ke4 Rd6 (49...Rd2 50.Ne3+/-) 50.Ne3 White intends f5 50...Re6 51.Kf3 Kh7 52.Nd5 Bd8 53.Rc6 Kg7 54.f5 Re5 (better 54...Re1 55.Rc8 Bg5+-) 55.Nb6 Bb6 56.Rb6 Rc5 57.Rc6 Rd5 58.Rc4 (58.Ra6!? Rd3 59.Ke4 Rg3+-) 58...Rd3 59.Ke4 Rb3 (59...Rd1+-) 60.Kd5 Kf6 (60...h5 61.gh5 Rf3 62.b6 Rf5 63.Kd6 Rh5 64.b7 Rh6 65.Kd7+-) 61.Kc5 (61.Kc6 h5 62.gh5 Kf5+-) 61...Kg5 (61...Ke7 62.Kc6 Kd8 63.b6+-) 62.b6 h5 63.Kc6 (better 63.gh5 Kh5 64.Kc6+-) 63...hg4+/- 64.Rc5 g3 65.Rb5 (65.b7 g2 66.f6 Kh4 67.Rc1+-) 65...Rb5 66.b7?? (66.ab5 g2 67.b7 g1Q=) 66...g2 (better 66...Rb1 67.Kc7 g2-+) 67.ab5= (67.Kb5?? g1Q (67...Kf5?! 68.b8Q g1Q 69.Qc8 Ke5 70.Qc7 Ke4 71.Qc2 Ke5 72.Qe2 Kd6 73.Qd2 Ke6 74.Qa2 Kd6 75.Qa3 Ke6 76.Qb3 Kd6 77.Qd3 Ke5 78.Qd7=) 68.Ka6 Qg3-+) 67...g1Q 68.b8Q Qg2 69.Kb6 Qf2 70.Ka5 Qf5 (70...Qa2 71.Kb6 Qf2 72.Kc6 Qf3 73.Kd7 Qf5 74.Kc6 Qe4 75.Kc5 Qe3 76.Kc4 Qe4 77.Kb3 Qe3 78.Ka4 Qd4 79.Ka5 Qa1 80.Kb4 Qd4 81.Ka3 Qe3 82.Ka2 Qd2 83.Kb1 Qd3 84.Kc1 Qc3 85.Kd1 Qd3 86.Ke1 Qe3 87.Kf1 Qf3 88.Kg1 Qe3 89.Kg2 Qe2 90.Kh3 Qe6 91.Kg3 Qe3 92.Kh2 Qe2 93.Kh1 Qe4 94.Kh2 Qe2 95.Kg3 Qe3 96.Kg2 Qe2 97.Kg3 Qe3=) 71.Qg8 Kf6 72.Qh8 Ke6?? (better 72...Ke7+/-) 73.Qc8+- Kf6 74.Qf5 Kf5 75.b6 1-0. Antokpemainkuat (2205) - Arifars17 (2530), HBD ke-4th PT. NHS ENTR SEJATI Arena, lichess.org, 2021.

10.a4 Qc7 11.a5 ba5 12.Bc3 a6 13.Ba5 Nb6 14.Nc3 ab5 15.Nb5 Qc6 16.Ne5 Qc8 17.Bb6 Ba6 18.Nc7 1–0. Husarik,B – Krejci,J, Frymburk, 2000.

10.Qc2 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 dc4 (13...Qc7 14.Nbd2=) 14.dc4 Qc7 15.Rd1 Rd8 16.Qb2 (16.Nbd2 Bd6=) 16...Ne8 (16...Bd6 17.Nbd2=) 17.Nc3 (17.Nbd2 Bd6=) 17...Bf6 18.Qc2 Ba8 19.Ne4 Ba1 20.Ra1 Be4 21.Qe4 h6 (21...Nef6 22.Qh4=) ½–½. retiponziani (1880) – Ironsteinitz (2240), ChessWorld.net, 2010.

10.Qc2 a6 11.ba6 Ra6 12.Nc3=.

10.Qc2 a6 11.Nc3=.

10.Nc3 Qc7 11.a4 Rad8 12.Qc2 dc4 13.dc4 Ng4 14.Ne4 Bf6 (14...Ndf6 15.Nf6 Bf6 16.Bf6 Bf3 17.g3 Nf6 18.Bf3=) 15.Bf6 Ndf6 (15...Ngf6 16.Nf6 Nf6 17.a5=) 16.Nf6 Nf6 17.h3 (17.a5 Be4 18.Qa4 Rd7=) 17...e5 (17...Be4 18.Qc3=) 18.Rfd1 e4 (18...Rfe8 19.Rd8 Rd8 20.a5=) 19.Nh2 (19.Nd2 Rd7=) 19...Nd7 (19...Rd1 20.Rd1 Rd8 21.Rd8 Qd8 22.Ng4=) 20.Nf1 f5 21.Ng3 (21.a5 Nf6=) 21...g6 (21...f4 22.Ne4 fe3 23.fe3=) 22.Ra3 (22.a5 ba5 23.Qa2 f4 24.ef4 A) worse is 24...Rf4 25.Qa5 Nb6 26.Rd8 (26.Qa7? Ra8–+) 26...Qd8 27.Qc3+/–; B) 24...Qf4=) 22...Ne5= 23.Rc3 (23.Rd8 Rd8 24.a5 a6=) 23...Bc8 (23...Rd1 24.Qd1 g5 25.Qc2=) 24.Nf1 (24.Ra1 a5=) 24...Be6 25.Nh2 (25.Nd2 Rd7=) 25...Qf7 (25...Rd1 26.Qd1 Qd8+=) 26.f4 (better is 26.Rd8!? Rd8 27.Nf1=) 26...Rd1-/+ 27.Qd1 Nc4 28.Nf1 Na5 29.Nd2 Rd8 30.Qc2 Qd7 31.Nb1 (31.Nf1 Nb7-/+) 31...Kf7 (31...Qd5 32.Kf2-/+) 32.Kf1 (32.Qc1 Qd6-/+) 32...Qd5 33.Ke1 Qa2 34.Qa2 Ba2 35.Nd2 Ke7 36.g3 (36.g4 Bd5-/+) 36...Bd5 37.Bf1 c4 38.Be2 (38.Rc2 Rc8-/+) 38...Kd6–+ 39.Rc2 Kc5 40.Nb1 Kb4 41.Nc3 Be6 (41...Be6 42.Bf1 Rd3–+) 0–1. Bergljung,Andreas – Seger,Yngve, corr SSKK, 1985.

10.Nc3 Bd6 11.Qc2 Qc7 12.h3 dc4 13.dc4 Rfd8 14.Rfd1 Ne5 15.Ng5 (15.Ne5 Be5 16.f4 Bd6=) 15...Be7 16.f4 (16.a3 h6 17.Nge4 Ne4 18.Ne4 a6=) 16...Ng6 17.Bd3 e5 18.fe5+= Qe5 (18...Ng4 19.Bg6 fg6 20.Nd5 Bd5 21.cd5 (worse is 21.Rd5 Bg5 22.hg4 Be3 23.Kh2 Rd5 24.cd5 Bf4 25.Kg1 Be5-/+; 21.hg4?! Bb7 22.Ne6 Rd1 23.Qd1 Qc8=) 21...Bg5 22.hg4 Be3 23.Kh1=) 19.Nce4 Qc7 20.Nf6 Bf6 21.Bf6 gf6 22.Nf3 Qe7 (22...f5 23.Qe2+=) 23.Qf2 Qe6 24.Rd2 Rd7 (24...Re8 25.Re1+=) 25.Rad1+/– Rad8 26.Bc2 Bf3 27.Rd7 (worse is 27.gf3 Rd2 28.Rd2 Rd2 29.Qd2 Qh3+=) 27...Rd7 28.Rd7 (28.Qf3?! Rd1 29.Bd1 Qc4+=) 28...Qd7 29.Qf3 (worse is 29.gf3 Qh3 30.f4 f5+=) 29...Qd2 30.Qe4 h5 (30...f5 31.Qd3 Qe1 32.Kh2=) 31.Bb3 (31.Kh2 f5 32.Qf5 Qe3=) 31...Qe1 Black prepares h4 (31...f5 32.Qf3+=) 32.Kh2= Kg7 (32...h4 33.Qf3=) 33.Qf3 h4 34.Bc2 (34.Bd1 Ne5 35.Qe2 Qg3 36.Kh1 f5=) 34...Ne5 35.Qf4 Qd2 36.Bb3 Ng6 37.Qf3 f5 38.Qf5 Qe3 39.Qg4 Kf6 40.Bc2 (40.Qd1 Qf4 41.Kh1 Ne5=) 40...Qe5 (40...Qf4 41.Qf4 Nf4 42.g3 hg3 43.Kg3=) 41.Kh1 Qd4 42.Qf5 Kg7 43.Bb3 Ne5 (43...Qd2 44.Qb1=) 44.Qg5 Kf8 45.Kh2 (45.Qh6 Ke7=) 45...Ng6 46.Qh6 Kg8 (46...Ke7 47.Qc1=) 47.Kh1 (47.Qc1 Nf4 48.Qf1 Qe5=) 47...Qf2 (47...Qa1 48.Kh2=) 48.Qg5= Kg7 49.Kh2 f6 Do you see the mate threat? 50.Qg4 Kh6 (50...f5 51.Qd1=) 51.Qe4 Nf4 Attacking the backward pawn on g2 (51...Qf4 52.Qf4 Nf4 53.g3=) 52.Qa8 Kg5 (52...Qg3 53.Kh1=) 53.Qg8 Kf5 (53...Ng6 54.Qd5 Ne5 55.Kh1=) 54.Qh7 (54.a3 Ng6 55.Qc8 Ke4 56.Qg4 Qf4 57.Qf4 Kf4–+) 54...Ke6 Threatening mate: Qxg2 55.Qe4 Kf7 (55...Kd6 56.Qc6 Ke5 57.Qc7 Ke4 58.Qe7 Kd3 59.Qd8 Ke3 60.Qe8 Kd2 61.Qe4-/+) 56.Bc2 (56.Bd1 Qg3 57.Kh1 Nd3 58.Bh5 Kg7=) 56...Ne2 The mate threat is Qg1 57.Qb7 Ke6 58.Qd5 Ke7 59.Qb7 Kd6 60.Qc6 Ke7 61.Qb7 ½–½. Reuter,Alfred J (1775) – Newman,Nelson (2095), IECC, 1999.

10.Nc3 Bd6 11.cd5 Nd5 12.Qd2 Nc3 13.Qc3 Nf6=.

10.Nc3 Bd6 11.h3 Bc7 (11...Qe7 12.cd5 Nd5 13.Nd5 ed5 14.a4+=) 12.Qc2 Qe7 13.cd5 ed5 14.Rac1 (14.Rfc1 a6=) 14...Ne5 (14...a6 15.ba6 Ra6 16.Nb5=) 15.Rfe1 (15.d4 Nf3 16.Bf3 Rfc8=) 15...Rfe8 (15...Nf3 16.Bf3 (worse is 16.gf3 d4-/+) 16...Rfe8 17.Na4=) 16.Nh4 Ng6 (16...a6 17.d4 Ned7 18.Nf5=) 17.Ng6 hg6 (17...fg6 18.d4=) 18.Bf1 (18.Bf3 Qd6=) 18...Qd6 (18...a6 19.ba6 Ba6 20.g3=) 19.g3 Qd7 20.Bg2 Be5 21.Ne2 Qb5 22.d4 (22.Be5 Re5 23.d4 Ree8=) 22...cd4 23.Nd4 Qd7 (23...Qb4 24.a3 Qe7 25.Nb5+=) 24.Qb3 (24.Nf3 Bd6=) 24...Ba6 25.Nf3 Bb2 26.Qb2 Ne4 27.Qa3 (27.Nd4 g5+=) 27...Bc4 28.Rc2 (28.Nd4 g5+=) 28...a5 (28...Rac8 29.Rec1+=) 29.Qb2 Qa4 (29...b5 30.Rec1+=) 30.Rec1= Nc5 31.Ne5 (31.Qb6? Nd3–+) 31...Re5 (31...Ba2 32.Qb6 Nb3 33.Qb7+/–) 32.Qe5= Attacks the isolani on d5 32...Nd3 33.Qc7 (33.Qd4 Nc1 34.Rc1 Qa2 35.Qb6+=) 33...Nc1+= 34.Rc1 Qa2 The passed pawn on a5 quickly leads to threats (better is 34...b5 35.Qb7 Rd8+=) 35.e4 (35.Rc4 Qc4 36.Qc4 dc4 37.Ba8–+) 35...b5 (35...Qd2 36.Rb1–+) 36.Qb7 (36.Qc6 Rd8 37.Qc7 Re8 38.ed5 Qd2-/+) 36...Rf8 (36...Re8 37.Qd7 Re5 38.f4–+) 37.ed5 Qd2 38.Rb1 (38.Ra1 a4 39.Qb6 Re8–+ (worse is 39...Bd5 40.Qb5 Bb3 41.Bc6-/+)) 38...Qd3 (38...a4 39.Qe7-/+) 39.Rc1 (39.Re1 a4-/+) 39...a4 (39...a4 40.Qc6 Bb3-/+) 0–1. Cetwinski,Olgierd (2210) – Tolloczko,Jan (2095), corr Poland–ch42, 1999.

10.Nbd2 Qc7 11.d4 Rac8 12.Rc1 Qb8 13.a4 Rfd8 14.Qb3 Qa8 15.Rc2 cd4 16.Bd4 Bc5 17.Bf6 Nf6 18.Rfc1 Qb8 19.h3 h6 20.Qb2 Qd6 21.Qe5 Qe7 22.Nb1 Nd7 23.Qb2 f6 24.cd5 Bd5 25.Nd4 Bd4 26.ed4 Rc2 27.Qc2 Nf8 28.Qc3 Bb7 29.Nd2 Qd6 30.Nb3 Bd5 31.Nd2 Bb7 32.Nb3 Qf4 33.Rd1 Rc8 34.Qd2 Qd6 35.Ra1 Ng6 36.Qe3 Bd5 37.Nd2 Nf4 38.Bf3 Bf3 39.Nf3 Nd5 40.Qe1 Re8 41.Rc1 Kf7 42.Rc6 Qa3 43.Rc4 Qd3 44.Qc1 Re7 45.Nd2 Nf4-/+ 46.Kh2 Ne2 47.Qb2 Rd7 48.Rc8 Nd4 49.Qb4 Qd2 50.Qf8?? Kg6–+ 51.Qe8 Kf5 52.Qh5 Qg5 53.g4 Ke5 54.Qe8 Qf4 55.Kh1 Qf3 56.Kg1 Ne2 (56...Ne2 57.Kh2 Qf2 58.Kh1 Rd1) 0–1. Poschmann,Hans – Jahr,Dieter (1960), Wch Seniors, 1998.

10.Nbd2 Qc7 11.d4 Ne4 12.Rc1 f5 13.Ne5 Nd2 14.Qd2 Ne5 15.de5 Rad8 16.f4 dc4 17.Qc2 Be4=+ 18.Qc4 Bd5 19.Qa4= g5 20.Bc4 Qb7 21.Bd5 Rd5= 22.Qb3 gf4 23.Rf4 Kh8 24.Qc3 Rg8 25.Qc2 Rd3 26.Rf5 Qe4 27.Rf2= Qe3 28.Kh1 Rgd8 29.Re2 Rd2-/+ (29...Rd2 30.Qd2 Qd2 (30...Rd2? 31.Re3 Rb2 32.Ra3+–) 31.Rd2 Rd2-/+) 0–1. Koller – Brandl,Josef (2275), corr 8. Oesterr. FSM, 1985.

11.Rd1 a6 12.ba6 Ra6 13.d4 cd4 14.Bd4=+.

11.Rd1 dc4 12.dc4 a6 (12...Bd6 13.Nc3=) 13.ba6 Bc6 (13...Ra6 14.Nc3=) 14.Nc3+= Qa7 15.Rd2 (15.e4 Qa6 16.Rd2 Rfd8+=) 15...Qa6 16.Rad1 Qb7 17.Ng5 (17.a3 Rfd8+=) 17...h6 (17...Rfd8 18.Bd3 h6 19.Nge4+=) 18.Nf3 Rfd8 19.a3 Nf8 20.h3 (20.Rd8 Rd8 21.Rd8 Bd8=) 20...Ng6 21.Rd8 Rd8 22.Rd8 Bd8 23.Qd1 Qa8 24.Bd3 Nf8 (24...Bf3 25.Qf3 Qf3 26.gf3=) 25.Bc2 (25.Nb5 Be7+=) 25...N6d7= 26.Nd2 Be7 (26...Bf6 27.Qg4=) 27.e4 (27.Qg4 Ne5 28.Qh5 Nfg6+=) 27...Bg5 28.Nf3 Bf6 29.Qd3 Ng6 (29...Ne5 30.Ne5 Be5 31.Na4=) 30.Nd1 (30.Bb3 Nde5 31.Ne5 Be5=) 30...Nge5 (30...Bb2 31.Nb2 e5 32.Qe3+=) 31.Ne5 Be5 (31...Ne5 32.Qe2=) 32.Qe3 Qb8 (32...Bb2 33.Nb2 e5 34.Qd3+=) 33.Be5= Qe5 34.Qd3 Qd4 35.Ne3 Nf6 e4 seems the pivot of the position 36.f3 Nd7 (36...Bd7 37.Kh2+=) 37.Qd4 (37.f4 e5=) 37...cd4-/+ 38.Nd1 Kf8 (38...e5 39.g3-/+) 39.Kf1 Nc5 40.Nb2 e5 41.h4 (41.Nd3 Nd3 42.Bd3 Ke7+=) 41...g5 (41...Ke7 42.Ke2-/+) 42.hg5+= hg5 43.Kf2 (43.Nd3 Nd3 44.Bd3 Ke7+=) 43...Ke7 44.g4 f6 (44...Kd6 45.Bd3-/+) ½–½. Bendig,Frank – Nemec,Zdenek, corr or01–010, 2001.

11.Nbd2 a6 12.ba6 Ra6 13.cd5 ed5 14.Rfc1=.

11.Nbd2 e5 12.cd5 Nd5 13.a3 a6 14.a4 ab5 15.ab5 Bf6 16.Qb3 Rfe8 17.Ne4 Bd8 18.Ra8 Ba8 19.Ra1 Qb8 20.Nfd2 Bb7 21.Nc4 Bc7 22.Bf3 N7f6 23.Nf6 Nf6 24.Bb7 Qb7 25.e4 Nd7 26.Ra6 Ra8 27.Qa2 Ra6 28.ba6 Qa7 29.Qa4 Nf8 30.Be5 Bd8 31.Qe8 1–0. phildo (1890) – yamunotri (1890), gameknot.com, 2013.

11.Nbd2 Ne8 12.Rac1 (12.cd5 ed5 13.a4 a6=) 12...dc4 (12...a6 13.ba6 Ra6 14.a4=) 13.Nc4 Bf6 (13...a6 14.ba6 Ra6 15.a4=) 14.d4+= cd4 (14...a6 15.ba6 Ba6 16.Rfd1+=) 15.ed4 (15.Nd4 Nc5+=) 15...Be7 16.Nce5 Qc2 17.Rc2 Ne5 (17...Ndf6 18.Rfc1+=) 18.Ne5 (18.de5 a6 19.Rd1+=) 18...Bd5 (better is 18...Be4!? 19.Rc3 Nf6=) 19.Nd7+/– Ba2 20.Bf3 (20.Ba3 Ba3 21.Ra2 Rd8 22.Nf8 Bf8+/–) 20...Rd8 21.Nf8 Bf8 22.Ra1 Bd5 23.Be2 Rd7 24.Ba3 f6 (24...Ba3 25.Ra3 Nd6 26.Rc1+/–) 25.Rc8 (25.Bd3 Ba3 26.Ra3 Nd6+/–) 25...Ba3 26.Ra3 Kf7 27.Rac3 (27.Rc1 Nd6+/–) 27...Bb7 28.Rb8 Nd6 29.g4 (29.Rh8 h6+/–) 29...Ne4 (29...e5 30.de5 fe5 31.Rh8+=) 30.Re3 Nd6 (30...Bd5 31.f4+=) 31.f3 (31.f4 Bd5+/–) 31...Rc7 (31...Bd5 32.Kf2+=) 32.Ra3 (32.Rd8 Ke7 33.Rh8 h6+=) 32...Bd5 33.Kf2 Ke7 (33...e5 34.Ke3+=) 34.h4 (34.f4 f5+/–) 34...Ne8 (34...e5 35.Re3 Ke6 36.Bd3+/–) 35.Ke3 Kd6?? (35...Nd6!?+/–) 36.Bd3 (36.Re8 h6+–) 36...h6?? (36...Ke7 37.Bh7 f5 38.gf5+–) 37.Be4 (better is 37.Re8!? Kd7 38.Bg6 Kd6+–) 37...Re7?? (37...Kd7 38.Bd5 ed5 39.Ra8+/–) 38.Rc3 (better is 38.Bg6 Nc7 39.Ra7 Rd7+–) 38...Rc7?? (better is 38...Kd7+–) 39.Ra3 (better is 39.Rd8!? Rd7 40.Re8 a5+–) 39...Re7 40.Rc3 (better is 40.Bg6 Nc7 41.Ra7+–) 40...Rc7= 41.Ra3 (better is 41.Rd8 Rd7 42.Re8+–) ½–½. Bigalke,Andre (2095) – Rahman,Taibur (2245), Wichern op 6th, 2001.

11.cd5 Bd5 12.Nc3 Bb7=.

11.cd5 Nd5 12.Nc3 Nc3 13.Qc3 Bf6=.

10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 Qc7 14.cd5 Bd5 15.Qc2 Rb8 (15...Ra8 16.Nc4=) 16.Bd3 (16.e4 Bb7+=) 16...h6 17.dc5 Qc5 18.Qc5 (18.Qb1 Ra8=) 18...Nc5 19.Bc4 Rd8 20.Bd4 Nfe4 21.Rb1 Bf6 ½–½. Jacewicz,Grzegorz – Nemec,Zdenek, b2–b4.com, 2003.

10.a4 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 Qc7 14.Nbd2 cd4 (14...Nbd7 15.dc5 Nc5 16.Be5=) 15.Bd4 Nbd7 (15...Rd8 16.Bd3=) 16.Qb3 (16.Qc2 Rd8=) 16...Bd6 (16...e5 17.Rc1 Qd6 18.Bc3=) 17.h3 (17.Rc1 Nc5 18.Qc3 Rd8=) 17...e5+= 18.Rc1 Nc5 Black prepares the advance e4 19.Bc5 Bc5 (19...Qc5? 20.Bf7 Rf7 21.Rc5 bc5 22.Qe6+–; 19...bc5?! 20.b6 Qd7 21.Qb5=) 20.Qb2 e4 (20...Re8 21.Nb3=) 21.Ne5 Qe7 (21...Nd7 22.Nd7 Qd7 23.Qc2+=) 22.Ra1 Bd6 23.Nc6 Qe8 (23...Bc6 24.bc6 Be5 25.Qa3=) 24.Rc1= Bc5 25.Ne5 Nd7 26.Nd7 Qd7 27.Nb3 Rc8 28.Nc5 Rc5 Attacks the isolani on b5 29.Be2 (29.Qd4 Qe7=) 29...Rc1 30.Qc1 Qd6 31.Qa1 ½–½. Sakai,Kiyotaka – Nemec,Zdenek, corr or01–011, 2001.

10.a4 dc4 11.Bc4 cd4 12.Bd4 ab5 13.ab5 Ra1 14.Ba1=.

10.a4 dc4 11.Bc4 Bd5 12.Bd5 Nd5 13.dc5 Bc5 14.Nc3=.

10.Nc3 ab5 11.Nb5 dc4 12.dc5 Bf3 13.Bf3 Ra5=.

10.cd5 Nd5 11.dc5 Bc5=.

11.Nbd2 Qc7 12.Qb3 ab5 13.ab5 dc4 (13...cd4 14.ed4 dc4 15.Nc4+=) 14.Bc4 (14.Nc4 Bd5=) 14...Bd6 15.h3 (15.Rfd1=) 15...e5 (better is 15...Rfc8=) 16.Ng5+/– Nb8 17.Ra8 Ba8 18.de5 (better is 18.Ra1!? Bb7 19.Nf7 Rf7 20.de5+–) 18...Be5+/– 19.Be5 Qe5 20.Nf7 Rf7? (better is 20...Qe7+/–) 21.Bf7+– Kf8 22.Nf3 (22.Bc4 Qg5 23.f3 Bd5+–) 22...Qc7 (22...Bf3 23.gf3 Nbd7 24.Rd1+–) 23.Bc4 (23.Ng5 Qe5 24.f4 Qe7+–) 23...Nbd7 (23...Bf3 24.gf3 Nbd7 25.f4+–) 24.Ra1 (better is 24.Ng5 Ke7+–) 24...Bf3 25.gf3 Ne5 26.Kg2 (26.Ra8 Ke7 27.Bd5 Qd7+–) 26...Ng6 (26...Qb8 27.Bd5 Qd6 28.Be6+–) 27.Bd5 (27.Ra8 Ke7 28.Bg8 Nh4 29.Kf1 c4 30.Qa3 Qd6 31.Ra7 Nd7+–) 27...Nh4 28.Kh1 (28.Kg1!? Qe5 29.Ra8 Ke7 30.Ra7 Kd6+–) 28...Qd7 Threatening mate: Qxh3 29.Be6 Qb7 (29...Qd2 30.Qa2 Qa2 31.Ra2+–) 30.e4 Ne4? (30...Ng6+–) 31.Qe3 (better is 31.fe4 Qe4 32.f3+–) 31...Nf6+/– 32.Ra3 Ng6 33.Rd3 (33.Qg5 Qb8+/–) 33...Qa8 (33...Qc7 34.Kg1+/–) 34.Qd2 (34.Rd6 Qb8 35.Rd2+=) 34...Qa1+= 35.Qd1 (35.Kg2 Qe5 36.Re3 Qd4+/–) 35...Qd1 36.Rd1 Ke7 37.Bc4 Nf4 (37...Ne5 38.Rc1+=) 38.Re1 Kd6 39.Kh2 (39.h4 g6+=) 39...h6 (39...h6 40.h4 g6+=; 39...g5 40.Rg1 h6 41.Re1=). Grodecki,Justina (1775) – Lind,Stephanie (1805), BL2 South, 2002.

11.Nbd2 Qc7 12.Qb3 cd4 13.ba6 Ra6 14.Bd4+=.

11.Nbd2 Qc7 12.Qb3 Rfd8 13.Qc2 h6 (13...cd4 14.Nd4 Bd6 15.f4=+) 14.Bd3 (14.cd5 Nd5 15.Rfc1 Bd6=) 14...Bd6 (14...cd4 15.Nd4 (15.Bd4? e5-+) 15...Ng4 16.g3=+) 15.h3 (15.cd5 Nd5 16.ba6 Ba6 17.Ba6 Ra6=) 15...e5 (15...cd4 16.ba6 (16.Bd4? e5-+) 16...Ba6 17.Nd4=+ (17.Bd4? e5-+)) 16.cd5= ed4 17.e4 Re8 (17...Ne5 18.Ne5 Be5 19.Nc4+=) 18.Nc4+= White plans a5 18...Ne5 19.Nfe5 Be5 20.a5 (20.Rfd1+=) 20...ba5 (better 20...ab5!? 21.Nb6 c4 22.Na8 Ra8=) 21.b6+/- (21.Na5 ab5 22.Nb7 A) worse 22...Qb7 23.Qc5 b4 24.Ra8 (worse 24.Bd4 Rac8 25.Ra7 Rc5 26.Rb7 Bd4 27.Rb4 Be5=+) 24...Ra8 25.Bd4+/-; B) 22...Ra1 23.Ba1 c4-/+ (worse 23...Qb7 24.Qc5 b4 25.Bd4+/-); 21.Ra5?! ab5 22.Rb5 Ba6=; 21.Ne5?! Qe5 22.f3 Qd6=) 21...Qd8? (better 21...Qe7+/-) 22.Ne5+- Re5 23.Qc5 Ne4? (23...Bd5 24.Qd4 Re4 25.Be4 Be4 26.Qd8 Rd8+-) 24.Qd4 f6 25.Be4 Bd5 26.f3 Be4 27.Qd8 Rd8 28.Be5 fe5 (28...Bb7 29.Bg3 Rd5 30.Rfc1+-) 29.fe4 Rb8 30.Rfb1 Rb7 31.Ra5 1-0. DEFFM – GuestXKHD, freechess.org, 2021.

11.Nbd2 Qc7 12.cd5 Bd5 13.ba6 Rfc8=.

11.Nbd2 Bd6 12.Bd3=.

10.Bc4 a6 11.a4 a5 (11...ab5 12.Bb5 (12.ab5 Ra1 13.Ba1 Nbd7 14.Nc3 cd4 15.Nd4 Ne5 16.Bb3 Qd6 17.Qe2) 12...Nc6 13.Nbd2 Qc7 14.Rc1 Rfd8 15.Qb3 Rd5 16.h3 Rad8 17.Rfd1; 11...cd4 12.Nd4 (12.ba6 Na6 13.Bd4 Qc7 14.Nbd2 Bd6 15.Bf6 gf6 16.Ba6 Ba6 17.Rc1; 12.Qd4 ab5 13.ab5 Qd4 14.Bd4 Ra1 15.Ba1 Nbd7 16.Nbd2 Rc8 17.Rc1; 12.Bd4 ab5 13.ab5 Ra1 14.Ba1 Nbd7 15.Nbd2 Qc7 16.Qc2 Rc8 17.Rc1) 12...ab5 13.Bb5 Qc7 14.Nd2 Nbd7 15.Rc1 Nc5 16.Qe2 Rfd8 17.f4) 12.Nbd2 (12.Ne5 cd4 13.Bd4 Qc7 14.Nd2 Nbd7 15.Nd7 Nd7 16.Rc1 Nc5 17.f4; 12.Qc2 Nbd7 13.Nbd2 Qc7 14.Rfd1 h6 15.Rac1 Rac8 16.h3 cd4 17.Bd4; 12.h3 Nbd7 13.Nbd2 h6 14.Qc2 Rc8 15.Rac1 cd4 16.Bd4 Qc7 17.Rfd1; 12.Nc3 cd4 13.Nd4 Qc7 14.Qe2 Rc8 15.Ba2 Nbd7 16.Rac1 Nc5 17.Rfd1; 12.g3 Nbd7 13.Nbd2 Rc8 14.Rc1 h6 15.Qe2 cd4 16.ed4 Bb4 17.Bd3; 12.Ra2 Nbd7 13.Nbd2 Rc8 14.Qe2 h6 15.Rc1 Qc7 16.h3 Nd5 17.e4; 12.dc5 Bc5 13.Nbd2 Nbd7 14.Rc1 Rc8 15.Bd3 Qe7 16.Nc4 Rfd8 17.Qe2) 12...Nbd7 13.Qe2 (13.Qc2 Rc8 14.Rfd1 h6 15.Rac1 Qc7 16.Bd3 Bd6 17.h3) 13...Qc7 (13...Rc8 14.Rfd1 Bd6 15.Rac1 cd4 16.Nd4 Qe7 17.f4) 14.Rfd1 (14.Rac1 Rac8 15.Rfd1 Qb8 16.h3 Rfd8 17.Bd3) 14...Rac8 (14...Bd6 15.g3 h6 16.dc5 Nc5 17.Bf6) 15.Rac1 Qb8 (15...Rfd8 16.Bd3 Nd5 17.dc5) 16.Ba3 (16.h3 Rfd8 17.Bd3) 16...Rfe8 (16...Bd6 17.Nb3) 17.Bb2 (17.Qd3=) 17...Qa8 18.Bd3 h6 19.Nc4 Bf8 (19...cd4 20.Bd4 Bc5 21.Bb2=) 20.dc5 Bc5 21.Bd4 (21.e4 e5+=) 21...Bd5 (21...Bf3 22.Qf3 Qf3 23.gf3 Bd4 24.ed4=) 22.Bc5 (22.Ba1 Rf8=) 22...Bc4 23.Rc4 Nc5 24.Ne5 Red8 25.Nc6 Rd3?? (better is 25...Rd7+= would keep Black alive) 26.Rd3+– Nd3?? (26...Nd5 27.Rd1 Qb7+–) 27.Qd3 (better is 27.Ne7 and the result of the game is clear: White will win 27...Kh7 28.Qd3 g6 29.Rc8+–) 27...Qb7?? (27...Re8 28.Rd4+=) 28.Qd6 (better is 28.Ne7 seems even better 28...Qe7 29.Rc8 Ne8 30.Qd8 Qd8 31.Rd8+–) 28...Qd7?? (better is 28...Re8+= this is the best way to fight back) 29.Qd7+– Nd7 30.Kf1 (30.Ne7 and White can already relax 30...Kf8 31.Nc8 Ke8+–) 30...Nc5?? (better is 30...Kf8!?+= is worth consideration) 31.Ke2 (better is 31.Ne7 it becomes clear that White will call all the shots 31...Kf8 32.Nc8+–) 31...Rf8?? (better is 31...Kf8 32.Rc5 bc5+/–) 32.Rc5!+– bc5 33.b6 f6 34.b7 h5 (34...Kf7+– desperation) 35.b8Q (better is 35.Ne7 and White has prevailed 35...Kh7 36.Nc8 h4+–) 35...Rb8 36.Nb8 Kf7 37.Nc6 Ke8 (37...c4 is not the saving move 38.Na5 Ke7 39.Nc4+–) 38.Na5 Kd7 39.Kd3 Kc7+– 40.Nb3 g5 (40...Kc6 a fruitless try to alter the course of the game 41.Kc4 Kb6 42.a5 Ka6 43.Nc5 Ka5 44.Ne6+–) 41.Kc4 1–0. Karacsony,Zsolt (1700) – Toma,Paul, Centrocoop op, 1997.

10.Bc4 cd4 11.Nd4 Nbd7 12.Nd2 Nc5 13.N2f3 Qc7 14.Rc1 Rfd8 15.Qc2 Rac8 16.h3 Bf3 17.gf3 Qb7 18.Qe2 Na4 19.Nc6 Rd7 20.Ne7 Re7 21.Bd4 Rec7 22.Kh2 Kf8 23.Be5 Rd7 24.Rg1 Rcd8 25.Rc2 Nc5 26.Bf6 gf6 27.f4 Ke7 28.Rg7 Rd1 29.f3 (29.Rh7 Qh1 30.Kg3 Rg8 31.Rg7 Rg7 32.Kh4 Qh3 33.Kh3 Rh1) 29...h5 30.f5 R1d6 31.e4 (better is 31.Rh7+/–) 31...Qb8= 32.Kg2 Rg8 33.Rg8 Qg8 34.Kf2 Qg5 35.Qe3 h4 36.Qg5 fg5 37.Ke3 ef5 38.ef5 f6 39.Re2 Rd1 40.f4 Rh1 41.Kf3 Kf8 42.Kg2 (42.fg5 Rh3 43.Kg4 Rc3=) 42...Rd1 (better is 42...Rc1!? 43.Bb3 Nd3–+) 43.fg5 fg5 44.f6 Rd6?? (better is 44...Rd4 45.Rc2 Ne4+=) 45.f7+– Rd8 46.Re5 Nd7 47.Rg5 1–0. Van Esbroeck,Dirk – Vontina,Maria, SN–2009–0-00141, 2009.

10.Bc4 Nbd7 11.Nbd2 a6!?=.

10.Bc4 Nbd7 11.Nbd2 Rc8 12.Qe2 Ne4 13.Rfd1 Qc7 14.Rac1 Bf6 15.Bd3 Nd2 16.Rd2 Qb8 17.Rdc2 e5? (better is 17...cd4 18.Nd4 Ne5=) 18.Ne5+– Ne5 19.de5 (19.dc5? Nd3 20.Qd3 Bb2 21.Rb2 Rfd8–+) 19...Be7 20.Qh5 g6 21.Qh6 Qc7 (21...c4 22.e6 c3 23.Rc3 Rc3 24.Rc3+–) 22.e6! f6 (22...fe6 23.Qg7) 23.Bg6! Bd6 (23...hg6 24.Qg6 Combination) 24.Bf7 Rf7 25.ef7 (25.ef7 Qf7 26.Rd2+–) 1–0. Lychkova,Ludmila (1935) – Bykov,Alexey1 (2090), Soukhumi op, 2007.

10.Bc4 Nbd7 11.Nbd2 cd4 12.ed4 Rc8 13.Qb3 Bd5 (13...Qc7 14.Rac1 Qd6 15.Rfd1=) 14.Rac1 Bc4 15.Rc4 (15.Nc4 Nd5+=) 15...Rc4 16.Nc4 Qc7 17.Rc1 Rc8 18.Ne3 Qb7 19.Rc4 (19.Rc8 Qc8 20.Qd3 Qc7=) 19...Bd6 (19...a6 20.a4=) 20.a4 (20.Ne5 Rc4 21.N5c4 Bf4=) 20...h6 21.Qc2 Rc4 22.Qc4 Nd5 23.Nd5 Qd5 24.Qd5 ed5 25.Kf1 f6 (25...Kh7 26.Nh4=) 26.Ke2 Kf7 27.Kd3 (27.Ne1 f5=) 27...g5 (27...Ke6 28.g3=) 28.h4 g4 (28...Nf8 29.g3=) 29.Ne1 (29.Ng1 h5=) 29...Ke6 (29...f5 30.Nc2=) 30.Bc1 h5 31.g3 f5 (31...Nf8 32.Nc2=) 32.Bg5 (32.Ng2 Kf7=) 32...Nb8 (32...Nf6 33.Ke3=) 33.Ng2+= a6?? (better 33...Nd7!?+=) 34.ba6 (better 34.Nf4!? Bf4 35.Bf4 (35.gf4?! ab5 36.ab5 Nd7=+) 35...ab5 36.Bb8 ba4 37.Bf4+–) 34...Na6+– 35.Bf4 (35.Bd8 Nb4 36.Kd2 Kd7 37.Bb6 Bb8+–) 35...Nb4 (better 35...Bf8!?+=) 36.Kc3+– Be7 (36...Bf8 37.Bc7 Na2 38.Kb3 Nc1 39.Kc2+–) 37.Bc7+– Bd6?? (better 37...Kd7 38.Bb6 Bd6+–) 38.Bd6 (38.Bd6 Nc6 39.Ba3+–) 1–0. DEFFM – Guestxxx, freechess.org, 2019.

10.Bc4 Nbd7 11.Nbd2 Ne4 12.Ne4+= Be4 13.d5 (13.Rc1!?+=) 13...Bd5 14.Bd5 ed5 15.Qd5 Bf6 16.Qd2 (16.Rad1 Bb2 17.Qf5 Qf6 18.Qd7 c4+=) 16...Qc7 17.Rfd1 Rfd8 18.Qc2 (18.Rac1 a6 19.ba6 Bb2 20.Qb2 Ra6=) 18...Ne5 (18...Bb2 19.Qb2 h6 20.h3=) 19.Be5 Be5 20.Rac1 h6 (20...g6 21.Ne5 Qe5 22.Qa4=) 21.g3 Bf6 22.a4 (22.e4 Re8=) 22...a6 (22...Qe7 23.e4=) 23.Rd8 Qd8 24.Rd1 Qe8 (24...Qe7 25.ba6 Ra6 26.Nd2=) 25.Qc4 (25.Rb1 a5=) 25...ab5+= 26.ab5 Ra5 27.Rb1 Qd7 (27...g6 28.Nd2+=) 28.Kg2 Ra3 29.Qe4 (29.Rb3 Rb3 30.Qb3 g5+=) 29...Ra2 (29...g6 30.Qc6 Qd8 31.Rf1+=) 30.Qc6 Qd3 (30...Qe6 31.e4=) 31.Rc1 (31.Re1 Rb2=) 31...Qe3 32.Rf1 Qe6 33.Re1 Qc6 34.bc6 Kf8 35.Rb1 (35.Nd2 Bc3 36.Rb1=) 35...Ke7–+ 36.Rb6 Kd6 37.h4 (37.Kf1 Kc7 38.Rb7 Kc6 39.Rf7 c4–+) 37...Ra7 (37...c4 38.Rb4 c3 39.Nd4–+) 38.Nd2 (38.g4 Kc7 39.Rb1 Kc6-/+) 38...Kc7–+ 39.Rb7 Rb7 40.cb7 Kb7 41.Kf3 Bd4 42.Ke2 (42.Nc4 Kc6–+) 42...Kc6 (42...g6–+) 43.f4 (43.Nc4!?–+) 43...Kd5 44.g4 (44.h5 c4–+) 44...c4 45.f5 (45.h5 c3 46.Nb3 Ke4–+) 45...c3 46.Nf3 Ke4 47.Nd4 (47.Ne1–+) 47...Kd4 48.g5 h5 0–1. Lorenc,Tomas (2185) – Karlik,Vladimir (2285), Tatry op Tatranske Zruby, 2000.

10.Bc4 Nbd7 11.Nbd2 h6 12.Qc2 Rc8 13.a4 cd4= 14.Nd4 Ne5 15.Ne6. pumpkin (2405) – patashon (1875), net–chess.com, 2004.

10.dc5 bc5 11.Nbd2 Qc7 (11...Qb6 12.Qa4 a6 13.Bc4=) 12.Bc4 (12.Be5 Qb6+=) 12...Ng4 (12...Rd8 13.Qc2=) 13.h3 Nf6 14.Qb3 (14.Be5 Bd6 15.Bf6 gf6+=) 14...Rd8= 15.Rfd1 Nbd7 16.Ng5 (16.Qc2 a6=) 16...Bd5 (16...Nb6 17.e4=) 17.Rac1 (17.e4 Bc4 18.Nc4 Qf4=) 17...Nb6 18.e4 (better is 18.Qc2!? Nc4 19.Nc4=) 18...Nc4-/+ 19.Nc4 Ne4 20.Ne4 Be4 21.Be5 Qb7 22.Na5 (22.Qg3 f6 23.Nd6 Bd6 24.Bd6 Rac8-/+) 22...Rd1 23.Rd1 Qc8 24.Nc4 Bd5 25.Qg3 f6 26.Nd6 Qd7 27.Bf4 Ba2 (27...Rd8 28.Nc4 Qb5 29.Bh6–+) 28.Rd2 (better is 28.Qa3!? Bd5 29.Qc5-/+) 28...Bd5–+ 29.Qg4 (better is 29.Rb2–+) 29...Rd8 (29...Bd6 30.Rd5 f5 31.Qf3 ed5 32.Qd5 Qf7 33.Qa8 Bf8 34.Bd6+=) 30.Bh6 (30.Nc4 Qb5 31.Bc7–+) 30…Bd6 (31.Rb2 c4–+; 30...Qd6?? 31.Qg7) 0–1. Nebe,Lutz – Sefeloge, 1 Kreisklasse, 1989.

10.dc5 Bc5 11.Nbd2 Bd5 12.Bc4 Bc4 13.Nc4 a6 14.Qd8 Rd8 15.Bf6 gf6 16.a4 ab5 17.ab5 Nd7 18.Ra8 Ra8 19.Rc1 Ra4 20.Nfd2 Ne5 21.Ne5 fe5 22.g3 Rb4 23.Rb1 Rb1 24.Nb1 Bb4 25.h4 h5 26.Kf1 e4 27.Ke2 Kg7 28.Nd2 Bd2 29.Kd2 Kg6 30.Kc3 Kf5 31.Kd4 f6 32.Kc3 Ke5 33.Kb3 Kd5 34.g4 Ke5 35.gh5 f5 36.Kc3 Kf6 37.Kd4 e5 38.Kd5 f4 39.Kc6 fe3 40.fe3 Kg7 41.Kb6 Kh6 42.Kc6 Kh5 43.Kd5 Kh4 44.Ke4 (Unregistered player Black disconnected and forfeits, 1–0). guest837 – guest1707, ICC, 2002.

10.Nbd2 a6 11.Bc4 ab5 12.Bb5 cd4 13.Nd4=.

10.Nbd2 c3 11.Bc3 Nd5 12.Bb2 Nd7 13.Nc4 (13.e4 N5f6 14.Qb1 Rc8=) 13...a6 14.a4 ab5 15.ab5 Nc7 (15...Bf6 16.Ra8 Qa8 17.Nfe5 Ne5 18.de5+=) 16.dc5 Bc5 17.Nd6 (17.Ra8 Ba8 18.Nd4 Bd5=) 17...Ra1 18.Ba1 Bd5 19.Nc4 Qe7 (19...Nb5!? 20.Qb3 Nd6-/+) 20.Qc2 Nf6 (20...Rd8 21.e4 Bb7 22.Rd1=) 21.Nce5 Be4 22.Qc4 Bd5 23.Qh4 Ra8 (23...Qe8 24.Nc6 Ne4 25.Ng5 Ng5 26.Qg5+=) 24.Ng5 (24.Nc6 Bc6 25.Bf6 Qf6 26.Qf6 gf6 27.bc6 Nd5+=) 24...h6+/– 25.Ngf7 Nh7? (25...Rf8 26.e4 Bb7=) 26.Qg4 (26.Qe7 Be7 27.Bd4 Bc5+–) 26...Qf6 27.Bd3 Ng5 (27...Rf8 28.Qh5+–) 28.Ng5 Qg5 29.Qg5 hg5 (29...hg5 30.Nd7 Ra3+–). Kreuzer,U – Oberlin, active–ch, 1991.

10.ed4 dc4 11.Bc4 Qc7 12.Nbd2 Nbd7 13.Rc1 Qf4 14.Qb3 Bd5 (14...a6 15.ba6 Ba6 16.Rfe1 Bc4 17.Nc4+=) 15.Bd5 Nd5 16.Nc4 (16.Ba3 Ba3 17.Qa3 a5=) 16...N7f6 (16...a6 17.ba6 Ra6 18.Nce5 Ne5 19.de5+=) 17.Nfe5 (17.Ba3 Ba3 18.Qa3 Rfd8=) 17...Ng4 (17...a6!?+=) 18.Ng4= Qg4 19.Ne3 Qe4 (19...Ne3 20.fe3 a6 21.Rc7=) 20.Nd5 ed5? (better is 20...Qd5!? 21.Qd5 ed5=) 21.Rfe1+/– Qh4 22.g3 Qf6 23.Rc6 Qg5?? (better is 23...Bd6+/–) 24.Re5+– (24.Re5 Qd2 25.Re7+–) 1–0. DEFFM – GuestWTMP, freechess.org, 2018.

10.Qd4 dc4 11.Nbd2 Qd4 12.Bd4 Nbd7 13.Nc4 Nc5 14.Nfe5 Nfd7 (better 14...Rac8!?=) 15.Nc6+/- Bf6 16.Nd6 Bd4?? (better 16...e5 17.Bc3 Bc6 18.bc6 Nb8+/-) 17.ed4+- (17.Nd4?! Bd5+/-) 17...Bc6 18.bc6 (18.dc5?! Bd5 19.c6 Nc5+/-) 18...Ne5 (18...Nb8 19.dc5 Nc6+-) 19.de5 Rfd8 (19...f6 20.ef6 gf6 21.Rfd1+-) 20.c7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

10.Qd4 Bc5 11.Qf4 dc4 12.Bf6 (12.Rd1 Nbd7+=) 12...Qf6= 13.Qf6 gf6 14.Nfd2 a6 15.ba6 Ba6 16.Nc4 Bc4 (16...Rc8 17.Rc1=) 17.Bc4 Rc8 18.Be2 f5 19.a4 Nc6 20.Nd2 Ne5 21.Rfb1 Rd8 22.Nb3 Bb4 23.Ra2 Kg7 24.Nd4 Bc5 25.Nb3 Be7 (25...Bb4 26.g3=) 26.Nd4 Bc5 27.Nb3 Bd6 (27...Bb4 28.f4 Ng4 29.e4=) 28.Nd2 Bc5 29.Bb5 (29.Rb5 Nd3 30.Nb3 Nb4=) 29...Rac8 30.Be2 Kf6 31.Rb5 Nd3 32.Nb3 Nb4 33.Ra3 Be7 34.Ra1 (34.Rb6?? Nd5 35.Ra1 Nb6–+) 34...Rc2 35.Kf1 Rb2 36.Nd4 Bc5 37.Nf3 Ra2 38.Ra2 Na2 39.Rb3 e5 40.g3 Nc1 (40...h6 41.Bc4=) 41.Rc3 Ne2 42.Ke2 Ra8 43.Rc4 Ke6 (43...h6 44.Nd2=) 44.Nd2 h5 (44...Kd5 45.h3=) 45.h3 (45.f3 Kd5=) 45...Ra7 (45...Kd5 46.f3=) 46.f3 (46.Nb1 Rc7+=) 46...Ra8 47.Rh4 (47.Nb3 Kd5 48.Rh4 Ke6=) 47...f6 48.Nb3 Bd6 49.Nd2 Bf8 50.Nb1 ½–½. Arnold,Lee (1885) – Wakeham,Marc, IECC, 2001.

10.Bd4 a6 11.Nc3=.

10.Bd4 Nbd7 11.Nc3 dc4 12.Ne5 (better is 12.Qa4!?=) 12...Ne5-/+ 13.Be5 Qd1 14.Rfd1 Rfc8 15.Rd4 Rc5 16.f4 Nd5 17.Ne4 Ne3 (17...Rb5 18.Bc4 Rb2-/+) 18.Nc5–+ Bc5 (18...bc5? 19.Rd7 Bg2 20.Re7+–) 19.Rd7 Bd5 (19...Bg2 20.Bc4 Be4 21.Be2–+) 20.Rc1-/+ Ng2 21.Kf1 Ne3 22.Ke1 (22.Kf2 h6–+) 22...f6 (22...Ba3 23.Rc3 Bb4 24.Kd2–+) 23.Bb2 (23.Bc7 a6 24.a4 ab5 25.ab5 Ba3–+) 23...Rc8 (23...a6 24.ba6 Ra6 25.Rd8 Kf7 26.Bh5 g6 27.Be2 Ra2 28.Rd7 Ke8 29.Rd5 ed5 30.Bf6–+) 24.Kd2 (24.h3 Bb4 25.Kf2 Bd2-/+) 24...Nf5 25.Rf1 (better is 25.Rc3 Bd6 26.h3–+) 25...c3! 26.Bc3 (26.Kc3 Ba3) 26…Be3 (27.Kc2 Bd4–+) 0–1. Welling,G – Krudde,F, SMB–Eindhoven, 1993.

10.Nd4 a6 11.cd5 Nd5 12.Bd3=.

10.Nd4 Nbd7 11.Nc6 Qe8+=.

10.Nd4 Nbd7 11.Nd2 dc4 12.Nc4 Nc5 (12...Rc8 13.Rc1=) 13.Ne5 (13.Nc6 Bc6 14.Qd8 Rfd8 15.bc6 Rac8=+) 13...Qd5 (13...Qc7!? 14.Ndc6 Bd6=) 14.Ndc6+/– Bd6 (14...Rfe8 15.Bf3 Qd1 16.Rfd1+/–) 15.Bc4 (15.Nc4 Qd1 16.Rfd1 Bc7+/–) 15...Qd1+= 16.Rad1 Be5 (16...Ne8 17.Nd3+=) 17.Be5 (17.Ne7 Kh8 18.Be5 a6+=) 17...Nfd7 (17...a6 18.Ne7 Kh8 19.Bf6 gf6 20.Rd2=) 18.Bd6+/– Rfe8 19.f3 a6 20.Ne7 Kh8 21.Rf2 ab5 22.Bb5 Ba6 23.Bc6 Bb7 24.Rfd2 Bc6 25.Nc6 Ra3 (25...f5!?+/–) 26.Bc7 (26...b5 27.Rd7 Nd7 28.Rd7 Ra2 29.Rf7+–) 1–0. Pommerel,Wim – Floegel, corr CiF CP2, 1990.

10.Nd4 Nbd7 11.Nd2 Nc5 12.N2f3 Nce4 13.a4 Rc8 14.Qb3 Bc5 15.Rfc1 Bd4 16.Nd4 dc4 17.Bc4 Nd2 18.Qa2 Nc4 19.Rc4 Qd5 20.Nc6 Bc6 21.bc6 Rc6 22.Rc6 Qc6 23.Rc1 Qd5 24.Bf6 Qa2 0–1. Orang4Utan (1845) – barredo1234 (2060), lichess.org, 2020.

10.a4 a5 11.Nbd2 dc4 12.dc5 Nc5 13.Nc4 Nd5 14.Ne1 Rc8 15.Nd3 Nd3 16.Bd3 Nf6 17.Bd4 Bc5 18.Bc5 Rc5 19.Be2 Rd5 20.Qc2 Rg5 21.f3 Qc7 22.e4 Rh5 23.g3 Rc5 24.Rad1 Bd5 25.Rd4 Bc4 26.Rc4 Nd7 27.Rc5 Qc5 28.Qc5 Nc5 29.Bd1 e5 30.Bc2 Rd8 31.Rd1 Rd5?? 32.Rd5 1–0. Rosner – Pausch, corr DDR–I–720.

10.a4 Rc8 11.Nbd2 cd4 12.Bd4 Bc5 13.Bc3 Qe7 14.Qb3 Bd6 15.a5 Nc5 16.Qb2 Rfd8 17.ab6 ab6 18.Ra7 Bb8 19.Ra2 Nfe4 20.Be5 Nd2 21.Nd2 Be5 22.Qe5 Ra8 23.Ra8 Ra8 24.Ra1 Ra1 25.Qa1 h6 26.cd5 Bd5 ½–½. Oestblom – Stenbrink, Gaevle 1974.

10.Nc3 dc4 11.Bc4 a6 12.ba6 Ba6 13.Nb5=.

10.Nc3 dc4 11.Bc4 Qc7 12.Be2 Rfd8 13.Qb1 (13.Rc1 e5=) 13...Rac8 14.Rc1 Qb8 15.a4 cd4 16.Nd4 Ne5 17.h3 Nc4 18.Bc4 Rc4 19.a5 Rdc8 (19...e5!? 20.Nf5 Bf8-/+) 20.ab6+= ab6 21.Qa2 Bd6 22.Qa7 Qc7 23.Nce2 Rc1 (23...Ne4 24.Nf3 Rc1 25.Rc1-/+) 24.Rc1+= Bc5 25.Qa4 Qe5 (better is 25...Ra8 26.Qc2 Nd5+=) 26.Nf4? (better is 26.Qa7 Qe4 27.Nc6 Bc6 28.bc6 Qc6 29.Bf6+=) 26...g5–+ 27.Nd3? (27.Qa7 Qe4 28.Nc6 Bc6 29.bc6 (29.Bf6? Bb7 30.Rc4 Qc4 31.Qb7 Be3 32.fe3 gf4–+) 29...gf4 30.Qa6 Qc6 31.Bf6 fe3 32.Kf1 ef2 33.Bd4–+) 27...Qe4 28.Ne1 e5 29.Qc2 (29.Nef3 ed4 30.Bd4 Rd8–+) 29...ed4 (29...Bd4 30.Qe4 Rc1 31.Qf5 Bb2 32.Qg5 Kf8 33.Qf6 Re1 34.Kh2+–) 30.Qe4 Ne4 (30...Be4?! 31.ed4 Nd5 32.Rc4=) 31.ed4 Be7 32.Nf3 (32.Rc8 Bc8 33.Nc2 Bf6–+) 32...Rc1 33.Bc1 Nc3 34.Bg5 (34.Bd2 Nb5 35.Be3 f6–+) 34...Bg5 35.Ng5 h6 (35...h6 36.Nf3 Bf3 (worse is 36...Nb5 37.Ne1–+) 37.gf3 Nb5–+) 0–1. Morriss,Pete (2005) – Brady,Stephen (2380), Dublin IRL, Easter Masters, 2012.

10.Nc3 Qc7 11.Qb3 (11.cd5 Nd5 12.Nd5 Bd5=) 11...dc4 (11...cd4 12.Nd4 Nc5 13.Qc2=) 12.Qc4 Rac8 (12...Bd6 13.Rfd1=) 13.Rfc1 (13.Rac1 Bd6=) 13...Qb8 (13...Bd6 14.h3=) 14.Qb3 (14.a3 Rfd8=) 14...cd4 Black gets strong initiative 15.Nd4 Nc5 16.Qd1 (16.Qc2 Rfd8=) 16...Rfd8+= 17.Qf1 Bd6 18.g3 (18.h3 Bh2 19.Kh1 Be5+=) 18...Qa8 (18...Qc7 19.f4+=) 19.a4 (19.Rd1 a5+=) 19...e5 20.Nc6? (better is 20.Nf5+=) 20...Bc6–+ 21.bc6 Qc6 (21...Nb3 22.Bf3–+) 22.Nb5 Bb8 23.Qh3 (23.a5 a6 24.Nd4 Qe8-/+ (24...ed4?! 25.ed4 Nfe4 26.dc5=)) 23...Qe8 (better is 23...a6 24.Nc3 Rd2-/+) 24.Nc3? (better is 24.Bc4-/+) 24...Nb3–+ 25.Bb5 Qe6?? (better is 25...Qe7–+) 26.Qe6-/+ fe6 27.Ba6 Nc1 (27...Na1 28.Bc8 Rc8 29.Ba1-/+) 28.Bc8 Rc8 29.Rc1 Nd5 (29...e4!?-/+) 30.Kg2 Nc3 31.Rc3 (31.e4 Bd6 32.Rc3 Rc3 33.Bc3 a6-/+) 31...Rc3-/+ 32.Bc3 e4 33.Kf1 (33.f4 ef3 34.Kf3 a6-/+) 33...Kf7 (33...Bd6 34.Ke2-/+) 34.Ke1 (34.Ke2 a6-/+) 34...g5 (34...Bd6 35.Kd2-/+) 35.Kd1 (35.h3 Bd6-/+) 35...Kg6 (35...g4 36.Kc2-/+) 36.Kc2 g4 37.Kb3 Kf5 38.Kc4 a6 39.a5 (39.Bb4 Be5-/+) 39...Bc7 40.ab6 Bb6 41.Kb4 h5 (41...Bc7!?-/+) 42.Ka4+= Bd8 43.Ba5 Bf6 44.Be1 h4 (44...Bb2 45.Ka5+=) 45.Ka5 h3 46.Ka6 Ke5 (46...Be7 47.Kb5+=) 47.Bc3= Kd5?? (better is 47...Kf5 48.Bf6 Kf6=) 48.Bf6+– Kc4 49.Kb6 Kd3 50.Kc5 Ke2 51.Kd4 Kf2 52.Ke4?? (52.Ke5 Kg2 53.Ke4 Kh2 54.Kf4–+) 52...Kg2–+ 53.Kf4 Kh2 54.Kg4 Kg2 55.Kf4 h2 56.g4 (56.Ke5 Kg3 57.Ke6 h1Q–+) 56...h1Q 57.g5 (57.Ke5 Qd1–+) 57...Qf1 (better is 57...Qh2 58.Ke4 Qd6 59.Bd4–+) 58.Ke4 (58.Ke5 Qf5 59.Kd6 Kf3–+) 58...Qf5 (better is 58...Qc4 59.Bd4 Qb5 60.Bc5 Qc5 61.Kd3–+) 59.Kd4 Kf3 60.Kc4 Ke3 61.Kb4 e5 62.Kc5 (62.Kc4 e4 63.Bd4 Kf3–+) 62...e4 63.Kc4 Kf4 (63...Kf4 64.Bc3 e3–+) 0–1. Frankel,Zygmund – Dunn,Paul, Auckland op, 1996.

10.Nc3 cd4 11.Nd4 dc4 12.Bc4 Ne5 13.Bb3 Rc8 14.Rc1 Qd7 15.f3 Nc4 (15...Rfd8 16.Qe2=) 16.Qe2 (16.Nc6 Bc5 17.Qd7 Be3 18.Kh1 Nd7 19.Bc4 Bc1 20.Rc1 Bc6 21.bc6 Rc6=) 16...Nb2 17.Qb2 e5 18.Nc6 (18.Nc2 Qd3 19.Na4 Qf5=+) 18...Bc5 (18...Bc6!? 19.Rfd1 Qf5 20.bc6 Bc5-/+) 19.Nd1=+ Bc6 20.bc6 Qd6 21.Qc2? (21.Ba4!?=+) 21...Qc6 (21...Rc6 22.Qf5–+) 22.Nf2 (22.Qf5 Qd6-/+) 22...e4 (22...Nd5!? 23.Bd5 Qd5-/+) 23.fe4-/+ Rfe8 24.Rfd1 (24.Qd3 Qd6 25.Qd6 Bd6 26.Rc8 Rc8=+) 24...Qc7 (24...Ne4 25.Bd5 Nf2 26.Bc6 Nd1 27.Be8 Be3 28.Kf1 Rc2 29.Rc2=) 25.Qc4 Ne4!? 26.Qa4?? (26.Qe4 Re4) 26...Re7 (26...Nf2 27.Rc5 Qc5 (27...bc5?! 28.Rd7 Nh3 29.gh3-/+) 28.Kf2 Qe3 29.Kf1 Re4 30.Bf7 Kf8 31.Qe4 Qe4–+) 27.Rf1 Nf6 28.Rfd1 (28.Rfe1 Qe5-/+) 28...Re3 (29.Qa6 Ne4–+) 0–1. Gross – Kern,Guido, Hessen clubgame, 1989.

10.Nc3 Ne4 11.dc5 (11.Rc1 Nc3 12.Bc3 dc4 13.Bc4 a6=) 11...Nc3 12.Bc3 bc5 (12...Nc5 13.Qc2=) 13.a4 (13.Qc2 dc4 14.Rfd1 Qc7+=) 13...Bf6 14.Qc2 Rc8 (14...Bc3 15.Qc3 Qf6 16.Qf6 Nf6 17.Rfc1=) 15.a5 (15.Rfd1 Qe7=) 15...Qe7 (15...dc4 16.Rfd1=) 16.Rfb1 Rfd8 17.Ra2 (17.Bf6 Nf6 18.a6 Ba8=) 17...Bc3 18.Qc3 Nf6 19.Nd2 e5 20.cd5 (20.Qc2 d4=) 20...Nd5+= 21.Qb3 Rd6 (21...Nb4 22.Rab2+=) 22.Nc4= Rh6 (22...Rg6 23.Bf1=) 23.Bf3 e4 24.Bg4 Rf8 (24...Rd8 25.Rd2=) 25.g3 (25.Rd2 Qh4 26.h3 f5+=) 25...Qg5 26.Be2 Qf5 (26...Qf6 27.Rd1=) 27.Bf1 Qh5 28.h3 Bc8 29.Bg2? (better is 29.h4=) 29...Bh3–+ 30.Be4 Bf5 (better is 30...Nb4 31.Rbb2 Bf5–+ (worse is 31...Na2 32.Ra2 Bg4 33.Nd2–+)) 31.Bg2?? (better is 31.Bd5 Rd8 32.Bg2 Bb1 33.Rd2 Rd2 34.Nd2-/+) 31...Bb1 32.Rd2 Nb4 (32...Qh2 33.Kf1 Nf6 34.Qb1 Qh1 35.Bh1 Rh1 36.Kg2 Rb1 37.b6–+) 33.Qb1 Qh2 34.Kf1 Qh1!! 35.Bh1 Rh1 36.Ke2 Rb1 37.b6 (37.Rd7 Na2 38.Ra7 Nc3 39.Kf3 Nb5–+) 37...Rc1 (37...ab6!? 38.ab6 Rb8 39.Ne5–+) 38.Ne5 ab6 39.ab6 Rc2 (better is 39...Rb1–+) 40.Nd7?? (40.Rc2 Nc2 41.Nd7–+) 40...Rd2 41.Kd2 Rd8 0–1. Krebbers,Wilfried (2115) – Schmidt,Martin (1650), 8th Goch op, 2007.

10.Nc3 Re8 11.Qc2 Nf8 (11...Rc8 12.cd5 Nd5 13.Nd5 Bd5 14.e4 cd4 15.Qb1=) 12.Rfd1+= Qc7 13.a4 (13.dc5 bc5 14.Rac1 Rac8=) 13...Ng6 (13...cd4 14.Rd4 Bc5 15.Rdd1=) 14.Rac1 (14.cd5 ed5 15.dc5 bc5=) 14...Rad8 (14...cd4 15.Rd4 Bc5 16.Rdd1=) 15.h3 (15.cd5!? ed5 16.Ne5=) 15...dc4+= 16.Nb1 cd4 17.Bd4 e5 (17...Bd5 18.Bb2+=) 18.Bb2 (18.Bc4 Bd5 19.Bd5 Qc2 20.Rc2 ed4+= (worse is 20...Rd5 21.Nc3 ed4 22.Nd5 Nd5 23.Rd4+=)) 18...Be4 (18...Rd1 19.Qd1 Bd5 20.Nbd2+=) 19.Qc4= Qc4 20.Bc4 (20.Rc4? Rd1 21.Bd1 Bb1 22.Ne5 Ba2–+) 20...Rd1 21.Rd1 Bf3 22.gf3 Rd8 (22...Rc8 23.Rc1 Rd8 24.Kf1+=) 23.Rd8+= Bd8 24.Nd2 Kf8 25.Kg2 Nd7 26.Ne4 Be7 27.Kg3 ½–½. Van Esbroeck,Dirk – Kothe,Harry, corr APCT, 1992.

10.dc5 bc5 11.Nbd2 a6 12.a4 ab5 13.cb5 Qc7 14.Qc2 c4 (14...e5 15.a5=) 15.Bc3+= White prepares a5 15...Bc5 (15...e5 16.a5 Bd6 17.a6+/–) 16.a5+/– Ne4 (better is 16...Rfb8!?+/–) 17.Ne4+– de4 18.Nd2 Nf6 (better is 18...Bd6+–) 19.a6 (19.Bc4 Ng4 20.g3 Ne3=) 19...Bc8 (19...Bd5 20.Bf6 (20.Bc4 Ng4 21.g3 Be3 22.Bd5 ed5 23.fe3 Ne3+–; 20.Nc4 Bc4 21.Ba5 Bd3 22.Bc7 Bc2+=) 20...gf6 21.Ne4+– (worse is 21.Nc4 Rfc8+–; worse is 21.Bc4 Bd6+–)) 20.Bf6 (worse is 20.Ne4 Ne4 21.Qe4 Bd7 22.Qc4 Rfc8+–; worse is 20.Nc4 Nd5+–; 20.Bc4?! Ng4 21.g3 f5+–) 20...gf6 21.Ne4 (21.Bc4?! f5+–; worse is 21.Nc4 f5+–) 21...Bb6 (21...Be7+–) 22.Nf6 Kg7 23.Qc3 e5 24.Nd5 Qd6 25.Nb6 Qb6 26.Qe5 f6 27.Qe7 (27.Qe7 Rf7 28.Qe4+–) 1–0. Bendig,Frank – Zimmer,Peter, corr, 2000.

10.Nbd2 a5 11.a4 Rc8 (11...Qc7 12.Rc1=) 12.Rc1 cd4 (12...h6 13.cd5 Bd5 14.Ne5=) 13.ed4 (13.Bd4 Bb4=) 13...dc4 (13...Bd6 14.Bd3+=) 14.Nc4 Nd5 15.Nce5 (15.g3 Rc7=) 15...Ne5+= 16.Ne5 (16.de5 Nf4 17.Rc8 Qc8+=) 16...Rc1 17.Qc1 (17.Bc1? Nc3 18.Qe1 Qd4–+) 17...Qd6 18.Qd2 h6 (18...Qb4 19.Qb4 ab4 20.Bf3+=) 19.g3 (19.Bf3 Bg5 20.Qd3 Nb4+=) 19...Nb4 (19...Qb4 20.Qb4 ab4 21.Rc1+=) 20.Qf4 (20.Rc1!?=) 20...Bg5+= 21.Qg4 Nd5 (21...Rc8!?-/+) 22.Bd3 (22.h4 f5 23.Qf3 Be7=) 22...Nf6 (22...Ne7 23.Re1=) 23.Qe2 h5 (23...Nd5 24.Nc4 Qc7 25.h4=) 24.f4 (24.Nc4 Qd8=) 24...Bh6 25.Rc1 h4 26.Qe3 (26.Nc6 Rc8=) 26...Nd5 (better is 26...g6=) 27.Qf3?? (better is 27.Ba3! Qd8 28.Qd2+=) 27...hg3–+ 28.hg3 Nf4 29.Qb7 Nd3 30.Rc8 Ne5 (30...Nb2?! 31.Qf7 Kh7 32.Qg6 Kg8 33.Qf7 Kh7 34.Qg6 Kg8 35.Qf7=) 31.Rf8 Qf8 32.de5 Qc5 33.Kg2? (better is 33.Kh1 Qc4 34.Qa8 Kh7 35.Qf3–+) 33...Qc2 34.Kh3 (34.Kf3 Qb3 35.Kg4 Qb2 36.Qb6 Qe5 37.Qd8 Kh7 38.Qd3 f5 39.Kh3 Be3–+) 34...Qb2 35.Qb6 Qe5 36.Qa5 (36.Qd8 Kh7 37.Qd3 f5–+) 36...Qh5 37.Kg2 Qe2 38.Kh3 (38.Kh1 f5 39.Qa8 Kf7 40.Qb7 Kg6–+) 38...Qf1 (better is 38...f5 39.Qb6 Kh7–+) 39.Kh4 (39.Kh2 Qf2 40.Kh3–+) 39...f5 (39...Qh1 40.Kg4 f5) 40.Qa8 (40.Qd8 Kh7 41.g4 Qf4 42.Qh8 Kh8 43.Kh3 Qg4 44.Kh2 Bf4 45.Kh1 Qh3 46.Kg1 Be3) 40...Kh7 41.Qc6 (41.Qh8 Kh8 42.g4 Qf3 43.gf5 ef5 44.b6 g5) 41...g5 (41...g5 42.Kh5 Qh3) 0–1. Schmitt,Bernhard – Genzling,Alain (2095), Verbandsliga Sued Baden, 2005.

10.Nbd2 a5 11.Rc1 Rc8=.

10.Nbd2 a5 11.Ne5 Rc8 12.Rc1 Qc7 (12...cd4 13.Bd4 Ne5 14.Be5=) 13.f4 (13.Nd7 Nd7 14.Bd3 Rfd8=) 13...Ne5 (13...Rfd8 14.Bf3=) 14.de5 (14.fe5 Nd7=) 14...Nd7 15.Nf3 (15.Qc2 Rfd8=) 15...Rfd8 16.Qc2 g6 (16...Nf8 17.cd5 ed5 18.Bd3=) 17.Kh1 (17.cd5 ed5 18.Nd4 Re8+=) 17...Bf8 (17...dc4 18.Bc4 Bf8 19.Rcd1+=) 18.Ng5 (18.cd5 ed5 19.f5 c4+=) 18...Bg7 (18...Be7 19.cd5 Bd5 20.e4+=) 19.cd5 Bd5 20.e4 Bb7 (better is 20...Ba8+=) 21.Ne6?? (better is 21.f5 Ne5 22.fe6+/–) 21...fe6-/+ 22.Bc4 Nf8 23.f5 gf5 (23...Rd7 24.f6 Bh6 25.Rcd1–+) 24.ef5 Be5?? (better is 24...Bd5 25.f6 Bh6–+) 25.fe6+= Bd5 26.Rf7 (26.Be5 Qe5 27.Rce1 Qd4 28.Bd5 Qd5+=) 26...Qd6= 27.Qf5 Bc4? (27...Bb2 28.Bd5 Qd5 29.Rf8 Rf8 30.Qd5 Bc1 31.e7 Rf7 32.Qd8 Rd8 33.ed8Q Rf8 34.Qd5 Kg7 35.g4 Rf1 36.Kg2+/–) 28.Qg5 (28.Rg7 Kg7 29.Be5 Qe5 30.Qe5 Kg8+–) 28...Ng6 29.Qh5 Qd1 30.Rd1 Rd1 31.Qd1 Bb2 32.Qd7 Rf8?? (32...Ra8 33.Rh7 Be6 34.Qe6 Kh7 35.Qb6 Re8 36.Qa5 c4 37.Qa7 Re7+=) 33.Rf8 (33.Rf8 Nf8 34.Qf7 Kh8 35.Qf8) 1–0. Mallet,J – Goyffon,F, 1973.

10.Nbd2 a5 11.Ne5 Ne5 12.de5 Ne8 13.cd5 ed5 14.f4 (14.Bd3 f5=) 14...f6 (14...a4 15.Qc2+=) 15.Bd3 (15.Qc2 fe5 16.fe5 Rf1 17.Rf1 Nc7=) 15...f5 16.g4 Bc8 17.h3 (17.Qc2 c4 18.Bf5 Bf5 19.gf5 Bc5=) 17...g6 (17...fg4 18.hg4 Nc7 19.a4+=) 18.Kh2 (18.gf5 Bf5 19.Bf5 Rf5=) 18...fg4 19.hg4 c4 (19...Ng7!?+=) 20.Nc4+= dc4 (20...Bc5 21.Kg2 Qe7+=) 21.Bc4+– Kh8 (better is 21...Kg7 22.e6 Nf6+/–) 22.e6?? (better is 22.Qd8 Bd8 23.Ba3+–) 22...Ng7+= 23.Qf3 (23.Qd8!? Rd8 24.Rad1+=) 23...Ra7= 24.Rad1 Qe8 25.e4 (25.Qc6 Qc6 26.bc6 b5=) 25...Bf6 26.Ba3 Be7 27.Bb2 Bf6 28.Ba3 Be7 (28...Rg8 29.f5 Be5 30.Kh3 gf5 31.ef5 Ne6 32.Be6 (worse is 32.fe6 Be6 33.Be6 Qe6-/+) 32...Be6 33.Rfe1= (worse is 33.fe6 Qe6 34.Bc1 Qa2-/+)) 29.Bb2 Bc5 (better is 29...Rc7 30.Qd3 Bf6 31.Bf6 Rf6+=) 30.Qd3?? (30.f5 h6 31.f6+/–) 30...Be6–+ 31.Be6 Qe6 32.f5 (32.Qe2 Kg8 33.Rd5 Ne8–+) 32...Qa2 33.Rd2 Qf7 34.e5 (34.Qd5 gf5 35.Qf7 Raf7 36.gf5 Re8–+) 34...Kg8 35.f6 Ne6 36.Rfd1 Raa8 (36...a4 37.Ba3–+) 37.Qh3 (37.Qf3 Rad8–+) 37...Rad8 38.Rd8 Rd8 39.Rd8 Nd8 40.Qd3 Ne6 41.Qd5 (41.Bc3 Nf8–+) 41...Nf8 42.Qd2 (42.Qf3 Qc4–+) 42...Qb3 (42...Qc4 43.Qg2–+) 43.Qe2 (43.Bd4 Bd4 (worse is 43...Qb5 44.Qa2 Kh8 45.Qf7–+) 44.Qd4 Qb5–+) 43...Qe3 (43...Ne6 44.Qd2–+) 44.f7 (44.Qe3 Be3 45.Kg3–+) 44...Kf7 45.Qc4 (45.Qe3 Be3 46.Kg2 Ne6–+) 45...Ne6 46.Bc1 (46.Qf1 Ke8 47.Bc1 Qe5 48.Kg2 Nd4–+) 46...Qe5 (46...Qg1 47.Kh3 Bf2 48.Qc7 Nc7 49.e6 Ne6 50.Be3 Qg3) 47.Kh3 (47.Kg2 Qe1 48.Qf1 Qf1 49.Kf1 h5–+) 47...Bd6 48.Kg2 (48.Kg2 Qg3 49.Kf1 Qf3 50.Ke1 Bb4 51.Bd2 Qe3 52.Kf1 Qd2 53.g5–+). Gueler Berdasco,Martin (1900) – Garcia Bartolome,Sergio (2090), 26th Torneo San Viator, 2016.

10.Nbd2 Bd6 11.Qc2 Qc7 12.a4 cd4 13.ed4 Rac8 14.Ba3 Rfe8 15.Bd6 Qd6 16.Rfc1 e5 17.de5 Ne5 18.Ne5 Qe5 19.Bf3 Ne4 20.Ne4 de4 21.Be2 e3 22.f3 Rcd8 23.Ra2 Rd2 24.Qb1 Re6 25.Rcc2 Rh6 26.g3 Qh5 27.h4 Rg6 28.Kh2 Qf3 0–1. Klarius – Iotov, corr.

10.Nbd2 Re8 11.a4 (11.Ne5 Qc7=) 11...a6 12.cd5 Nd5 13.Nb3 ab5 (13...Bf6 14.Qd2=) 14.Bb5 Nc7 15.Bd3 (15.Bd7 Qd7 16.dc5 Qd1 17.Rfd1 bc5=) 15...cd4 16.Qc2 (16.Nfd4 Nf6=) 16...g6 (16...Bf3!? 17.gf3 de3 18.Bh7 Kh8 19.fe3 Nd5+=) 17.Nbd4 (17.Nfd4 Nd5 18.Bb5 Rc8+=) 17...Nd5 (17...Nc5 18.Rfd1=) 18.Ne6 Qc8 (18...fe6 19.Bg6 Bf6 20.Bf6 (worse is 20.Bh7 Kh8 21.Ng5 Qe7+=) 20...N5f6 21.Be8 Qe8 22.Nd4=) 19.Qb1 (19.Ned4 Qc2 20.Nc2 Rec8+/–) 19...Nc5 Exerts pressure on the isolated pawn (19...fe6 20.Bg6 Nc3 21.Bh7 Kh8+–) 20.Nc5+/– Bc5 21.Ne5 (21.Rd1 Nb4+/–) 21...Nb4 (better is 21...Qc7 22.Ng4 h5 23.Nh6 Kh7+=) 22.Rd1 Ra7 (22...Nd3 23.Qd3 (worse is 23.Rd3 Re5 24.Be5 Qf5-/+; 23.Nd3?! Qc6 24.Ne1 Ra4=) 23...Re6 24.Qb3+–) 23.Bc4 (23.Bb5 Rd8+–) 23...Re5 (23...Ba6 24.Bb3+–) 24.Be5 Bg2 25.Bf6 (25.Kg2 Decoy theme: g2 25...Qg4 A double attack) 25...Nc6+/– 26.Bd5?? (better is 26.Be2 Qh3 27.Qc2+/–) 26...Bd5-/+ 27.Rd5 Qg4 (27...Qe6 28.Rc5 bc5 29.Qb2-/+) 28.Kf1 Qe6 (28...Qf3 29.Rc5 bc5 30.Bb2 Qh1 31.Ke2 Qb1 32.Rb1-/+) 29.Rc5 bc5 30.Qb2 Qh3 31.Ke1 Qh2 32.Qb5 Qh1 (32...Qd6 33.Bc3 Rd7 34.Ke2-/+) 33.Ke2+= Qh5 34.Ke1 Qh1 (34...Qf3 35.Bc3+=) 35.Ke2 Qh5 (35...Qe4!? 36.Qc5 Qg4 (36...Ra4 37.f3 Qb4 38.Qc6 Ra1 39.Ba1+–) 37.Ke1 Ra4 38.Ra4 Qa4+=) 36.Ke1= Qh1 (36...Qf3!? 37.Bc3 Qh1 38.Ke2 Qe4-/+) ½–½. Algra,Klaas – Nicolaes,L, corr NED–chS, 1986.

10.Nbd2 Re8 11.Qc2 Nf8 (11...cd4 12.Bd4 Qc7 13.Rfc1=) 12.Ne5 (12.dc5 bc5 13.Rfd1 N8d7+=) 12...Bd6 13.Ndf3 Qc7 14.Rac1 (14.Rfc1 Ne4+=) 14...a6= 15.a4 (15.Rfd1 ab5 16.cd5 c4 (worse is 16...Ra2 17.Bb5 Rea8 18.de6+=) 17.de6 Ne6+=) 15...ab5 16.ab5 (16.dc5 bc5 17.cb5 c4+=) 16...dc4 (16...Ne4 17.dc5 bc5 18.Ra1=) 17.Qc4 (17.dc5 Bc5 18.Bc4 Nd5+=) 17...Bd5 (17...N8d7 18.Nd7 Nd7 19.Rfd1=) 18.Qc2 (18.Qc3 N8d7=) 18...Be4 (18...Ra2 19.Rfd1=) 19.Bd3 Bf3 (19...Bd3!? 20.Nd3 N8d7=) 20.Nf3+= (20.gf3?! Nd5=) 20...N8d7 21.dc5 bc5 22.g3 (22.Rfd1 Red8+/–) 22...e5 (22...Red8 23.Rfd1+=) 23.Ng5 Pawn h7, live or die! 23...g6 (23...h6 24.Ne4+=) 24.Qc4 (24.Rfd1!? Nb6 25.Ne4 Ne4 26.Be4+=) 24...Re7 (24...Nb6 25.Qh4+=) ½–½. O'Harney,Robert – O'Neill,Steve, Brampton op, 2000.

10.Nbd2 Ne8 11.dc5 (11.cd5 ed5 12.dc5 bc5=) 11...Nc5= 12.Nd4 (12.cd5 Bd5 13.Nb1 Ne4=) 12...Bf6 13.cd5 Bd5 14.Bf3 (14.Bc4 Rc8=) 14...Nc7 (14...a6 15.ba6 Ra6 16.Qb1=) 15.Bd5 (15.Qc2 Bd4 16.Bd4 Nb5 17.Bg7 Kg7 18.Qb2 Qf6 19.Qb5 Rad8=) 15...Qd5 16.Qf3 (better is 16.Nc6!? Nb5 17.Bf6 Qc6 18.Qg4=) 16...Qf3 (16...Nb5 17.Qd5 ed5 18.Nb5 Bb2 19.Rad1+=) 17.N2f3 Nb5! 18.Nb5 A pinning theme 18...Bb2 19.Rad1 (19.Rab1 Bf6-/+) 19...Bf6 20.Nfd4 a6 21.Nd6 Ra7 22.Nc4 (22.Nc6 Rc7 23.Nb4 Rd8–+) 22...b5–+ 23.Na5 Rc7 24.Ndb3 (24.Rc1 e5 25.Nf5 Rfc8-/+) 24...Nb3 (24...Ne4 25.Rc1 Nc3 26.Rc2–+) 25.Nb3 Be7 (25...Rc2 26.Rd2 Rd2 27.Nd2–+) 26.Rd3 (26.Rd2 Rfc8-/+) 26...Rfc8 (26...Rc2 27.Rd7 Bf6 28.Rd2 Rd2 29.Nd2–+) 27.Rfd1 Kf8 28.g3 (28.Nd4 Rc1–+) 28...Ke8 (28...Rc2 29.R1d2–+) 29.Nd4 Rc3 (29...Bf6 30.Kg2–+) 30.R3d2 (30.Rc3 Rc3 31.h3 e5–+) 30...g6 31.Kg2 Rc1 (31...Bb4 32.Rb2 R3c4 33.Nf3–+) 32.Rc1-/+ Rc1 33.Nb3 (33.f4 Bc5-/+) 33...Rc4–+ 34.Na5 (34.h3 Bb4 35.Rb2 Bc3–+) 34...Rc7 35.Nb3 Bb4 36.Rd4 Bc3 (36...Rc4 37.h3–+) 37.Rd6-/+ a5 38.Rb6 a4 39.Nd4 (39.Nc1 Bd2 40.Nd3 Rc2 41.Rb8 Ke7 42.Rb5 Ra2–+) 39...Bd4 40.ed4 Rc2 41.Rb5 Ra2 42.Ra5 h5 (42...h6 43.Kf3–+) 43.h4 Ke7 44.Kf3 (44.Ra7 Kf8–+) 44...Kf6 45.Ke3 a3 46.f3 (46.Ra6 Kf5–+) 46...Ra1 (46...Rg2 47.Ra3 Rg3 48.Ra6–+) 47.Kd2 (better is 47.Kf4–+) 47...a2 48.g4?? (48.Kc3–+) 48...Rh1 (48...Rh1 49.Ke3 a1R 50.g5 Ke7 51.Ra1 Ra1–+) 0–1. Griechen,Harry – Schmidt,Lothar, Germany, 1999.

10.Nbd2 h6 11.a4 cd4 12.Nd4 dc4 (12...Qc7 13.cd5 Nd5 14.Rc1+=) 13.Bc4 (13.Nc4 Qc7=) 13...Nc5 14.Ba3 (14.Qe2 Rc8=) 14...Qc7 15.Rc1 Rac8 16.Qe2 Qd7 (16...Na4? 17.Ne6 Ba3 18.Nc7 Bc1 19.Rc1 Rc7 20.f3+–) 17.N2f3 Bd6 18.Rfd1 Qe7 19.Qa2 Kh8 (19...Rfd8 20.Bb4+=) 20.h3 Rfd8 21.Kf1 (21.Bb2 Nce4+=) 21...Nfe4 22.a5 Ng5 (22...ba5 23.Bc5 Bc5 24.Ne5-/+) 23.Be2 Bd5 24.Qa1 (24.Qb2 Nge4 25.ab6 ab6+=) 24...Nge4 (better is 24...Qb7+=) 25.Qb1? (25.Bc5 Nc5 (worse is 25...Rc5 26.ab6 ab6 27.Nc6 Bc6 28.bc6+=) 26.Bc4 Bf3 27.Nf3 ba5 28.Qa5 Kg8=) 25...g6?? (better is 25...Nf2 26.Kf2 Ne4 27.Kg1 Ba3–+) 26.Bb2 Kh7 (26...ba5?? 27.Nf5 Kh7 28.Ne7 Be7 29.Bc4+–) 27.ab6 ab6 28.Bc4 Bb7 29.Nb3 (29.Qc2 Qc7+=) 29...Nb3 (29...Na4 30.Ba1-/+) 30.Bb3+= Nc5 31.Bc4 (31.Bc2 e5+=) 31...Bf3 (31...Be4!? 32.Qa1 Ra8–+) 32.gf3+= Qh4 33.Ke2 Qh3?? (better is 33...Rd7!?+=) 34.Rh1 (34.Bf6!? Qf5 35.Qf5 gf5 36.Bd8 Rd8 37.Rd4+/–) 34...Qf5+= 35.Rh6 Kh6 36.Rh1 Qh5 37.Rh5 gh5 38.e4 (38.Bf6!? Rg8 39.Qd1+=) 38...Bf4= 39.Bc1 Bc1 40.Qc1 Kh7 (40...Kg6!?=) 41.Qg5+= Nd7? (better is 41...Rd7!?+=) 42.e5+– Ne5? (better is 42...Nf8+–) 43.Qe5 Rc5 (43...Rc4?? 44.Qh5 Kg7 45.Qg5 Kh7 46.Qd8 Rc2 47.Kd3+–) 44.Bd3 Kg8 45.Qf6 Rd7 46.f4 Rcd5 (46...Kf8 47.Be4+–) 47.Be4 Rb5 (47...Rd4 48.Kf3+–) 48.f5 Rd6 (48...Rb4 49.Bc6 Rdd4 50.fe6 Re4 51.Be4 Re4 52.Kd3 Re6 53.Qg5 Kf8 54.Qh5+–) 49.Kf3 Rb3 (49...h4 50.Qe7 ef5 51.Qd6 fe4 52.Kg4+–) 50.Kg2 Rb5 (50...ef5 51.Qd6 fe4 52.Qd8 Kg7 53.Qg5 Kf8 54.Qh5 Rd3+–) 51.Qg5 Kf8 52.Qh6 (52.Qh6 Ke8 53.f6+–) 1–0. Sieber,Martin (2015) – Knajbl,Michael, Czech Championship Div1 Vychod, 2013.

10.cd5 Nd5 11.Nbd2 cd4 (11...a6 12.a4=) 12.Bd4 Bf6 (12...Nc5 13.Qc2=) 13.Rc1 Qe7 (13...a6 14.Bf6 Qf6 15.Ne4=) 14.Nc4 (14.e4 Bd4 15.Nd4 Nf4=) 14...a6 15.ba6 Ra6 16.Qb3 (16.a4 Rc8=) 16...Rfa8+= 17.a3 R6a7 (17...Bd4 18.Nd4 (worse is 18.ed4 Nf4 19.Rfe1 Bd5-/+) 18...e5 19.Nf3=) 18.Rfe1 (18.Rfd1 Ba6=) 18...Ba6 19.Bf6 Qf6 20.Nfd2 Nc5 21.Qb1 Nc3 (21...Bc4 22.Nc4 Ra6 23.Bf3=) 22.Qb6 Ne2 23.Re2 Nd3 24.Rd1 (24.Rb1 Rb7 25.Qc6 Rb1 26.Nb1 Rb8–+) 24...Qc3 (24...h6 25.Ne4 Qh4 26.Ncd6+= (26.Rd3? Bc4 27.Nc5 Bd3 28.Nd3 Ra3–+)) 25.Nd6 Qc2 26.Rb1 (26.Qb1 Rc7+=) 26...h6 (26...Rd7 27.h3-/+) 27.Qb3+= Rc7 With the decisive threat Nc1 28.Qc2 Rc2 29.f3 Nc1 (29...Nf4 30.Rf2 Ne2 31.Re2 Be2 32.Nb3–+) 30.Rf2 Ne2 31.Re2 Be2 (31...Be2 32.Nb3 Rc6 33.Nf7 Kf7–+ (33...Ra3?! 34.Nd4+=)) 0–1. Byrne,Tony – Woelfelschneider,Peter, TT–13 ETC, 2004.

11.Qa4 dc4 12.Qc4 Nd5=.

11.dc5 Nc5 12.Rc1 dc4 13.Bc4 Qc7 14.Qe2 Rfd8 15.Nd4 Qb8 (15...Rd7 16.f4=) 16.Rfd1 Ne8 (16...Bd6 17.f4=) 17.Qg4 (17.Qh5 Nf6 18.Qh3 Qc7=) 17...Bf6 (17...Nf6 18.Qh3=) 18.a4 (18.Be2 Qc7=) 18...Kh8 (18...Nd6 19.Ba2=) 19.Ba2 (19.Be2 Nd6=) 19...Qa8 20.Bb1 Nd6 21.h4 (21.Qh3 h6 22.Bc2 Nc4+=) 21...h6 (21...Nc4 22.Rc2+=) 22.h5 (22.Nde2 a6 23.Rc2 Nf5 24.ba6 Ba6+=) 22...a6 (22...Nc4 23.Rc2+=) 23.ba6 Qa6 (23...Ba6 24.Ba3+=) 24.Ndb5= Nb5 25.ab5 (25.Rd8 Rd8 26.ab5 Qa5+=) 25...Qa8 (25...Qa5 26.Rd8 Rd8 27.Qc4+=) 26.Bc2= Rd1 27.Rd1 (27.Nd1? Bb2 28.Nb2 Nb3–+; 27.Bd1? Nd3 28.Ra1 Qb8–+) 27...Rd8 28.Ra1 Qb8 29.Qe2 (29.Rd1 Be5=) 29...Qc7 30.Bb1 (better is 30.Rd1=) 30...Ba8?? (better is 30...Qe5+=) 31.Qc2+– Threatening mate: Qh7 31...Kg8 (31...g6 32.Nd5! (32.hg6?! Qe7+–) 32...Bd5 33.Bf6 Kg8 34.Bd8 Qd8 35.hg6+–) 32.Qh7 Kf8 33.Ra8! Ke7 (33...Ra8 34.Qh8 A double attack) 34.Rd8 Qd8 35.Qc2 (35.Qc2 Kf8 36.Qd1+–) 1–0. Kreuzer – Dressler, Weinheim, 1986.

11.dc5 Nc5 12.cd5 Nd5 13.Rc1 Bf6 14.Na4 Bb2 (14...Na4 15.Rc8 Qc8 16.Bf6+=) 15.Nb2= Qe7 (15...Qf6 16.Qd4 Qd4 17.Nd4 Rfd8=) 16.Qd2 (16.Qd4 Rcd8=) 16...Rfd8 (16...Ne4 17.Qd3 Ndc3 18.Nd4–+) 17.Qe1 (17.Qd4 Nf6 18.Qe5 Bd5+=) 17...Ne4 18.Rc8 Rc8 19.a4 Nec3 20.Bd3 Qb4 (20...Nb4!? 21.Nd4 Qg5-/+) 21.Qa1+= Qc5 (21...Rc5+=) 22.Bc4 (22.Nc4 a6 23.Nfe5 f6 24.ba6 Ba6-/+) 22...Ne4 (22...Nf6 23.h3-/+) 23.Nd4 (better is 23.Rc1!?=) 23...Nd2-/+ 24.Rc1 e5?? (24...Nf4 25.ef4 Qd4–+) 25.Nd3+/– Qd6 26.Nf5 Qd7? (better is 26...Qe6 27.Qe5 Qe5 28.Ne5 Nc4 29.Nc4 Kf8+–) 27.Qe5 Nc4 (27...Nf6 28.Ne7 Kh8 29.Nc8 Nc4+–) 1–0. Bonetti,Shane – guest1856, ICC, 2002.

11.dc5 Nc5 12.cd5 Nd5 13.Nd5 Bd5 14.a4 Bf6 15.Bf6 Qf6 16.Qd4 Qe7 17.Nd2 Rfd8 18.Qb2 Qg5 19.Nf3 Nd3 20.Qb1 Be4?? 21.Ng5+– Bg6 22.Bd3 Bd3 23.Qb3 Bf1 24.Kf1 h6 25.Ne6 fe6 26.Qe6 Kh8 27.Qe7 Ra8 28.Rc1 a6 29.Rc7 Rg8 30.ba6 Ra6 31.Ra7 Ra7 32.Qa7 b5 33.ab5 Rc8 34.b6 Rc2 35.b7 Rb2 36.b8Q Rb8 37.Qb8 (37.Qb8 Kh7 38.e4+–) 1–0. TresHuevos – derfa7, Live Game Caissa's Web, 2005.

11.Ne5 Qc7 12.cd5 (12.Nd7 Qd7 13.dc5 Rc5 14.cd5 Rd8=) 12...Ne5 (12...ed5?! 13.Nd7 Qd7 14.Qa4=; 12...Nd5?! 13.Nd7 Qd7 14.dc5 bc5 15.e4=; 12...Bd5?! 13.Nd7 Qd7 14.Nd5 Nd5 15.dc5 bc5 16.Bc4=) 13.de5 Nd5 14.Bc4 Rfd8 15.Qg4 Nc3 16.Bc3 Bd5 17.Be2 Qb7 18.f4 Be4 19.Bf3 Rd3 Black is in command 20.f5 (20.Rac1 Re3 21.f5 ef5 22.Be4 Qe4 (22...fg4? 23.Bb7 Rd8 24.Rf4+–; 22...fe4 23.Qf4 Re2 24.Qf7 Kh8 25.e6+–; 22...Re4?! 23.Qf5 Rf8 24.Rcd1=) 23.Qf5 Qf5 24.Rf5 Rd8-/+) 20...ef5 (20...Bf3 21.Rf3 Rc3-/+) 21.Qf5-/+ Bf5 (21...Rc3?? 22.Be4 Qe4 23.Qe4+–) 22.Bb7 Rc7 23.Bc6 Bd7 (23...Rc3?! 24.Rf5 g6 25.Rf3+=; 23...Re3?! 24.Rf5 Rc3 25.Bd5=) 24.e6 Be6 (24...Rc3 25.ed7 (worse is 25.Bd7 Re3 26.ef7 Kf8+=) 25...Kf8 26.Rad1+/–; worse is 24...Bc6 25.ef7 Kf8 26.Be5-/+) 25.Be5 Rc8 26.e4 f6 27.Bg3 Bd6 28.Bf2 Be5 29.Rad1 Ra3 30.Bd7 Bd7 31.Rd7 Ra2 32.Rfd1 Rc7 33.R7d2 Rd2 34.Rd2 Kf7 35.Kf1 Ke6 (35...Bh2?! 36.g3–+) 36.g3 Rd7 37.Ra2 Bc3 38.Ra4 Bb4 39.Be1? (39.Ke2 Ke5–+) 39...Be1 (better is 39...Rd1–+) 40.Ke1 Rd4 41.Ra7 Rb4 42.Rg7 Ke5 43.Rh7 Ke4 (better is 43...Re4 44.Kd2 Rb4-/+) 44.Re7?? (better is 44.Rh4 Kd3 45.Rb4 cb4 46.Kd1+/–) 44...Kf5-/+ (44...Kf5 45.Kd1 Rb5-/+) 0–1. Phan Dan Huyen – Nguyen Thi Hanh, VIE–ch (Women), 2002.

12.Qa4 a6=.

12.Qa4 Ra8 13.Rfd1 c4 14.Qc2 Qc7 ½–½. Szakacs,Laszlo (1885) – Pusztai,Janos (1800), Komarom HUN, County Team Ch, 2013.

12.Qa4 Qc7 13.Rac1 (13.Rfd1 Bd6=) 13...Bd6 (13...Qb8 14.Rfd1=) 14.dc5 (14.Rfd1 Qb8=) 14...bc5 15.Qh4 (15.Qa7? Ra8 16.b6 Qc6–+ (16...Ra7?! 17.bc7 Bc7 18.a3=)) 15...Rfe8 16.Rfd1 Nf8 17.Qg5 The pressure on d5 grows (17.Nb1 Ng6 18.Qa4 Ne4=) 17...h6 (better is 17...d4!? 18.Na4 Qa5-/+) 18.Qf5= Rcd8 (18...Ne6 19.h3= (worse is 19.Nd5 Nd5 20.Rd5 Bd5 21.Qd5 Nf4+=)) 19.g3 (better is 19.Na4 Ne4 20.Rc2=) 19...Bc8 (19...d4 20.Na4 Be4 21.Qh3-/+) 20.Qc2 (better is 20.Qf6! d4 21.Nd5+/–) 20...Bb7 21.Qb3 (21.Rd3 Ne6=) 21...c4 (21...Ne6 22.Qa4=) 22.Qc2 Ng6 (better is 22...Ne6=) 23.Nd5 (better is 23.Nd4!?=) 23...Nd5-/+ 24.Bc4 Nge7?? (better is 24...Be5 25.Ne5 Ne5-/+ (worse is 25...Re5 26.Be5 Ne5 27.e4+–)) 25.Qb3+/– Bc5 26.e4 Qb6 27.Rd2 Be3 (27...Bb4 28.Re2 Nf5 29.Rd1+/– (29.Bd5?! Rd5 30.Qb4 Rb5=)) 28.Bd4 (28.fe3 Qe3 29.Qe3 Ne3+/–) 28...Bd4 29.Rd4 Nf6 (29...Rc8 30.ed5 Bd5 31.Re1 Bc4 32.Rc4 Rc4 33.Qc4+/–) 30.Bf7 Kh8 (better is 30...Kh7 31.Be8 Rd4 32.Nd4 Qd4+/–) 31.Rd8?? (31.Be8 Rd4 32.Nd4 Qd4 33.Bc6 Bc6 A) 34.Rc6?! Nc6 35.bc6 Ne4= (35...Qe4?? 36.c7+–); B) 34.bc6 Qe4 35.Qb8 Kh7 36.c7+–) 31...Rd8-/+ 32.Qb4? (32.Qe6 Qe6 33.Be6 Ng6-/+ (33...Ne4?! 34.Rc7 Nd6 35.Ne5=)) 32...Nc8 (better is 32...Ne4 33.Rf1 Nf2 34.Rf2 Bf3–+) 33.Re1-/+ Nd6 Black gets in control 34.Bd5? (better is 34.Bg6!?-/+) 34...Nd5 35.ed5 Bd5 (35...Qb5 36.Qb5 Nb5 37.a4 Bd5 38.Re3 Bf3 39.Rf3–+) 36.Ne5 (36.Nd4 Rc8 (36...Ba2?! 37.Nc6 Rd7 38.Rd1+=) 37.Qb2 Ba2–+) 36...Qb7 (36...a5 37.Qc3 Rc8 38.Qd2 Qb5 39.a4–+) 37.Ng6 (37.Qh4!? Rc8 38.Qf4-/+) 37...Kh7 38.Nf4 (38.Nf8 Kg8 39.Ng6 Qb5 (39...Ba2 40.Qa5 Qb6 41.Qa2 Kh7 42.Ne5+=; 39...Nb5?! 40.Ne7 Kh8 41.Rd1–+) 40.Ne7 Kh7 41.Qb5 Nb5–+) 38...Qb5 (38...Nb5?! 39.Re7 Qc6 40.Rg7 Kg7 41.Qe7 Bf7 42.Nh5 Kg8 43.Qd8 Kh7 44.Qd3 Bg6 45.Qe2-/+; 38...Ba2?! 39.Qa5 Rd7 40.Qa2 Qb5 41.Ne6=) 39.Nd5 (39.Qb5 Nb5 40.Rd1 Nc3–+) 39...Qd5 40.Qb1 Kh8 41.Rd1 Qc6 (41...Qe6 42.Qb3 Qg6 43.Qa4–+) 42.Qg6 (42.Qb4 a6–+) 42...Qb6 (42...Qc7 43.Kg2–+) 43.Re1 (43.h3 a5–+) 43...Qc7 (43...Rf8 44.Re2–+) 44.h4 (44.Re6–+) 44...Qf7 (44...Rf8 45.Re2–+) 45.Qc2? (better is 45.Qf7 Nf7 46.Re7-/+) 45...Rf8 (45...Nc4 46.Rd1 Re8 47.Qc3–+) 46.Qd2 (46.a4 Nf5 47.Qd1 Ne7–+) 46...Qf6 (46...Nc4 47.Qe2–+) 47.a4 (47.h5 a6–+) 47...Nc4 48.Qe2 Nb2 (48...Nb6 49.a5 Nc4 50.a6–+) 49.Rb1 (49.Ra1 Nd3 50.Rd1 Nf2–+) 49...Na4 50.Rb4 (50.Qe3 Nb6–+) 50...Nc3 51.Qe1 (51.Qf1 Qf3 52.Qg2 Ne2 53.Kh2 Qf2–+) 51...Rd8 (51...Qf3!? 52.Kh2–+) 52.Kh2 Nd5 (52...Kh7 53.Rf4 Qc6 54.Qe5–+) 53.Re4 Qf7 (53...Qf3 54.Qe2 Qf7 55.f4–+) 54.Qd2 (54.Kg1 Rf8–+) 54...Rf8 (54...a6 55.Kg1–+) 55.Kg1 (55.f4 Nf6 56.Re2 Kg8–+) 55...Nf6 (55...Rb8 56.Kg2–+) 56.Rf4 (56.Rd4 Qb7–+) 56...Qd7 (56...Re8 57.Rd4–+) 57.Rd4 (57.Qd7 Nd7 58.Ra4 Ra8–+) 57...Qc7 58.Qb4 (58.g4 Re8–+) 58...Rb8 59.Qd2 (59.Qa4 Re8 60.Rd1 a5–+) 59...h5 (better is 59...Rb1 60.Kh2 Qb7 61.Rd8 Kh7 62.Qc2 g6 63.Rd1–+) 60.Qd1 (60.Kg2 a5–+) 60...Qb6 61.Qd2 Re8 62.Qd1 (62.Rb4 Qa5–+) 62...Qa5 (62...Ng4 63.Rf4–+) 63.Qf3 (63.Kg2 Qb5–+) 63...Qe1 (63...Qa1 64.Rd1 Re1 65.Re1 Qe1 66.Kg2–+) 64.Kg2 Qe2 (64...a5 65.Qd3–+) 65.Qf5 Rf8 (65...Kg8 66.Rb4–+) 66.Rf4 (66.Rd5 Kg8 (66...Nd5?! 67.Qf8 Kh7 68.Qf5 Kg8 69.Qd5 Kh7 70.Qf7=) 67.Re5 Qa2 68.Qe6 Qe6 69.Re6 Re8–+) 66...Qb2 (66...Kg8 67.Qc5 a6 68.Qc3–+) 67.Qc5 (67.Ra4 a6–+) 67...Qb7 68.Kh2 (68.f3 Rd8 69.Qf2 Qd7–+) 68...Rc8 69.Qa3 Re8 (better is 69...Rd8 70.Qc1 a6–+) 70.Qa4 (70.Qa5 Kg8–+) 70...Qd7 (70...Re1 71.Re4 Ng4 (71...Ne4?! 72.Qe8 Kh7 73.Qh5 Kg8 74.Qe8 Kh7 75.Qh5 Kg8 76.Qe8 Kh7 77.Qh5=; worse is 71...Re4 72.Qd1 Ng4 73.Kg1–+) 72.Kg2 Re4 73.Qc2 Re3 74.Qe4 Qe4 75.f3 Qf3 76.Kh3 Qg3) 71.Qa5 (71.Qd7 Nd7 72.Ra4 Ra8–+) 71...Qd5 (71...Kg8 72.Kg2–+) 72.Qa4 (72.Qd5 Nd5 73.Rf5–+) 72...Re1 (72...Re1 73.Rf3 Qf3 74.Qe8 Ne8 75.g4 Rh1) 0–1. Michalke,Markus – Trenkler,Goetz, VK Gr1, 2000.

12.Ne5 c4 (12...Bd6 13.Nf3=) 13.Qa4+= Qc7 14.f4 (14.Qa7?? Ra8 (14...Ne5?! 15.de5 Ra8 16.Qa8 Ra8 17.ef6 Bf6 18.Rfd1–+) 15.Qa8 Ra8–+) 14...Bd6 15.Rac1 (15.Qa7?? Ra8 16.Qa8 Ra8–+) 15...Rfe8 (15...Ne5? 16.fe5 (16.de5?! Bc5 17.ef6 Be3 18.Kh1 Bc1 19.Bc1 d4=) 16...Be5 17.de5+–) 16.e4 (better is 16.a3=) 16...Be5?? (16...de4 17.Nd1 A) 17...Ne5? 18.fe5 Bd5 19.Ne3+– (19.ef6 Bh2 20.Kh1 e3 21.Bc4 Bc4 22.Ne3 Re3–+; 19.ed6?! Qd6 20.Ne3 Qd7+–); B) 17...Be5? 18.fe5 Nd5 19.Bc4+–; C) 17...Bd5=) 17.fe5+– (17.de5 Nc5 18.Qd1 Nfe4 19.Nd5 Bd5 20.Qd5 Rcd8 21.Qc4 Nd2+=) 17...Ne4 (better is 17...Ne5 18.de5 Qe5 19.Qa7 Qc7+/–) 18.Ne4 de4 19.Bc4 Qb8 (19...Ne5 20.de5 Qc5 21.Kh1+–) 20.Bf7 (better is 20.Rf7!? Red8 21.Rd7 Kh8+–) 20...Kh8 21.Be8 Re8 22.Qb3 (22.Rf7 Rd8+–) 22...Qd8 (22...Nf8 23.Rf7 Ne6 24.d5+–) 23.Rf7 Ba8 (23...e3 24.e6 Qg5 25.d5+–) 24.d5 (better is 24.Qg3 Rg8 25.Qg4 Ne5 26.de5+–) 24...Nc5 (24...Rf8 25.Rcf1 Rf7 26.Rf7 Nc5+–) 25.Qg3 Rg8 26.e6 (26.e6 Ne6 27.de6 Qd4 28.Bd4 h5 29.Qe5 Re8 30.Qg7) 1–0. DEFFM – GuestMTNW, freechess.org, 2018.

12.Nh4 Ne4 13.Nf5 Bf6 14.Rc1=.

12.Nh4 g6 13.Rc1 (13.dc5 bc5 14.Nf3 Re8=) 13...Qc7 Black prepares the advance c4 (13...Ne4 14.Nf3=) 14.Nf3 Rfe8 15.Qa4 Bf8 (15...a6 16.dc5 Nc5 17.Qd4+/–) 16.Rfd1 (16.Qa7 Ra8 17.Nd5 A) 17...Ra7 18.Nc7 Bf3 19.Ne8 (worse is 19.Bf3 Rc7 20.Rfd1 Bg7+=) 19...Be2 20.Nf6 Nf6 21.dc5+/–; B) 17...Nd5 18.Qa8 Ra8–+) 16...c4 (16...a6 17.dc5 bc5 18.ba6+/–) 17.Ba3 Bh6 (17...Ba3 18.Qa3 Ra8 19.Qb4+=) 18.Bb4 (18.Qa7 Bg7+/–) 18...Ng4 19.g3 (19.Rc2 Qb8+/–) 19...Ndf6 (19...Ne3 20.fe3 Be3 21.Kg2 Bc1 22.Rc1=) 20.Nd2 (20.Qa7 Ne4 21.Ne4 Re4+/–) 20...Ne3 (20...Nf2 21.Kf2 Be3 22.Kg2 Bd4 23.Bf3+=) 21.fe3+/– Be3 22.Kg2 Bd4 23.Bf3 Be3 (23...Qb8 24.Nf1 Qe5 25.Bd6 Qd6 26.Rd4+/–) 24.Ne2 (24.Qa7 Ra8 25.Bd6 Qc8 (25...Ra7?! 26.Bc7 Ba8 27.Bf4=) 26.Qa8 Qa8–+ (worse is 26...Ba8 27.a4–+)) 24...d4 (better is 24...a6+=) 25.Bd6?? (25.Rc4 Bf3 26.Kf3 Qd7–+) 25...Bd2?? (better is 25...Bf3 26.Nf3 Qd6 27.Rc4 Qd5 28.Rc8 Rc8–+) 26.Bc7+= Re2 27.Kf1 Bf3 28.Rd2? (28.Rc4 Rh2 29.Rd2 Rd2 30.Qa6–+) 28...Rd2–+ 29.Bf4? (better is 29.Qa7 Nd5 30.Bf4 Nf4 31.gf4 Rh2 32.Qd7–+) 29...Rh2 30.Rc4 (30.Qa6 Rc5 31.Qa3–+) 30...Re8 (30...Re8 31.Rd4 Ng4–+; 30...Be2!? 31.Ke1 Bc4 32.Qa7–+) 0–1. Malmstroem,Jan (1915) – Nemec,Zdenek (2045), TE–2004–P–01711, 2004.

12.Rc1 Nc3 13.Bc3 Bd5 14.Qa4=.

12.Rc1 cd4 13.Nd4 Nc5 (13...Bd6 14.Nd5 Rc1 15.Ne7 Qe7 16.Qc1=) 14.Bf3 Bf6 15.Nd5 (15.Ne4 Be5 16.Ne6 Bh2 17.Kh2 Qh4 18.Kg1 A) 18...Ne6? 19.Rc8 Rc8 20.Nd6 Ne3 21.fe3 Bf3 22.Qf3+– (22.gf3?! Rd8=); B) 18...fe6+=) 15...Bd5 16.Qe2 Bf3 (< 16...Ba2 17.Nc6 Qd3 18.Bf6 Qe2 19.Ne7 Kh8 20.Be2 gf6 21.Nc8 Rc8 22.Ra1+–) 17.Qf3 (< 17.gf3 Qd5=+) 17...Qe8 (17...Qd7 18.Ba1=) 18.Ba3 (18.Rfd1 Be5+=) 18...a6= 19.Rfd1 ab5 20.Qe2 Be7 (20...Rd8 21.Bb4=) 21.Nb5+= Rd8 22.Rd4 Rd4 (22...Qc6 23.Bb2=) 23.ed4+= Nb7?? (better is 23...Na6+=) 24.Be7+– Qe7 25.Rc7 Qg5 26.Rb7 Rc8 27.h3 (27.Qf1 h6 28.Rf7 Rc1=) 27...h5 (27...Qc1 28.Kh2 Qc6+–) 28.Qf3 (28...Qf6 29.Qf6 Rc1 30.Kh2 gf6 31.Rb6+–) 1–0. Ganesan,Arasu – Manninen,Juha, corr 3GMM–19, 1995.

12.dc5 Nc3 13.Bc3 Nc5 14.Rc1=.

12.Nd5 Bd5 13.a4 (13.Qb1 f5=) 13...cd4 (13...Qc7 14.Rc1=) 14.Nd4 Bf6 15.f3 Ne5 (15...Nc5 16.e4 Bb3 17.Qd2+=) 16.e4 (16.Rc1 Qd6=) 16...Bc4 Black terminates the opponent with strong threats 17.f4?? (better is 17.Rf2=) 17...Nd3!–+ 18.Nc6 (18.Bd3 Theme: Interference 18...Bd4 A double attack) 18...Nb2 19.Qc2 (19.Qd8 Bd8 (19...Rcd8?! 20.Bc4 Bd4 21.Nd4 Rd4 22.Bb3-/+) 20.Bc4 Nc4 21.Na7 Rc5–+) 19...Be2 (19...Bd3 20.Bd3 Nd3 21.Rad1 Qd4 22.Kh1–+) 20.Qe2 Qd3 21.Qd3 Nd3 22.e5 Bd8 23.Na7 (23.Ra3 Nc5–+) 23...Rc4 (23...Rc4 24.g3 Be7–+) 0–1. Veroeci – Ivanka, 1964.

12.Nd5 Bd5 13.Qa4 cd4 14.Bd4 (14.Qd4 Bf6 (14...Nf6 15.Qa4 Qd7 16.Rfd1 Rfd8 17.Rac1 Rc1 18.Rc1 Qb7 19.Be5 Rd7=) 15.Qb4 Rc2 16.Bf6 Qf6 17.Nd4 Qg5 18.g3 Rc7 19.Rfd1 Nc5+=; 14.Nd4 Nc5 (14...Qc7 15.Nc6 Bd6 16.Rfc1 Bh2 17.Kh1 Nc5 18.Qa7 Bd6 19.Qc7 Rc7=; 14...Bd6 15.Nf3 Nc5 16.Qg4 f6 17.Rfc1 Qe7 18.Bc4 Bc4 19.Rc4 f5+=; 14...f6 15.Ba3 Nc5 16.Bc5 bc5 17.Nc6 Bc6 18.bc6 Qc7 19.Bc4 Qc6=) 15.Qd1 Qc7 16.Nf5 Rfd8 17.Be5 Qb7 18.Ne7 Qe7 19.Qb1 f6+=) 14...Nc5 (14...Qc7 15.Rfd1 Rfd8 16.e4 Be4 17.Bb6 Qb6 18.Qe4 Nf6 19.Qa4 Nd5+=; 14...Bd6 15.e4 Be4 16.Bb6 ab6 17.Qe4 Nf6 18.Qd4 Qc7 19.Qb2 Ne4+=; 14...f6 15.Rac1 e5 16.e4 Be4 17.Bb6 Qb6 18.Qe4 Kh8 19.Qf5 Nc5+=) 15.Bc5 (15.Qa7?? Ra8 16.Qa8 Qa8–+) 15...Bc5 16.Rfc1 (16.Qa7?? Ra8 17.Qa8 Qa8–+; 16.e4 Bb7 17.Rfe1 Rc7 18.Rad1 Qa8 19.Bd3 Rfc8=) 16...Rc7 (16...Qf6 17.Qa7 Qb2 18.Re1 Ra8 19.Qc7 Ra2=) 17.Qd1 (17.Rc2 Qf6 18.Rd1 Rfc8= 19.Rcd2 Qh6=; 17.e4 Ba8 18.a3 Qf6 19.Rab1 Rd8+=) 17...Qc8 (17...Qf6 18.Ne1+= Rd7 19.Bd3 Bd6-/+) 18.a4 (18.Rc3 Rd8 19.Qa4 Qd7=) 18...Rd8 19.Qe1 White plans a5 19...h6 (19...Bd6+=) 20.a5 Bd6 21.a6 Rdd7 (21...Rc5 22.Rc5 bc5 23.Qb1+=) 22.g3 (22.Rc7 Qc7 23.Rc1 Qb8=) 22...Rc5 23.Rc5 Bc5 (23...bc5 24.Nd2+=) 24.Ne5= Rc7 25.Bf3 Bd6 26.Bd5 ed5 (26...Be5 27.Bb7 Qe8 28.Rb1+=) 27.Nc6+= Bc5 28.Rd1 Qe6 29.Qd2 Rd7 30.Qc3 1–0. Kamaletdinov,Farit (1945) – Privalov,Igor, 2012.

12.Nd5 Bd5 13.Qa4 Bf6 A) 14.Rac1 Rc7 (14...Qc7 15.Rfd1 Rfd8 16.Qc2 Qb7 17.dc5 Rc5 18.Qd2 Rc1 19.Qc1 Rc8=; 14...Qe7 15.Rfd1 Rfd8 16.Qc2 Nf8 17.Qb1 Ng6 18.e4 Nf4 19.Bf1 Bb7=; 14...cd4 15.Bd4 Bd4 16.Rc8 Qc8 17.Nd4 Qb7 18.Bf3 Bf3 19.Nf3 Nc5=) 15.Rfd1 Qb8 16.Rc2 Rfc8 17.Qa3 Qb7 18.dc5 bc5 19.Bf6 Nf6=; B) 14.Rad1 Qc7 (14...Rc7 15.Qa3 Qe7 16.Rd2 cd4 17.Qe7 Be7 18.Nd4 Rfc8 19.a3 Nc5=; 14...Re8 15.Rd2 Qc7 16.Rc1 Red8 17.dc5 Bb2 18.Rb2 bc5 19.Qh4 Qb7=; 14...Qe7 15.Ne5 Rfd8 16.Ng4 cd4 17.Nf6 Nf6 18.Rd4 e5 19.Rd2 Be4=) 15.Rd2 cd4 16.Nd4 Nc5 17.Qa3 Qb7 18.f3 Be7 19.Rc2 Bd6+=; C) 14.Rfd1 Rc7 (14...Qc7 15.Rac1 Rfd8 16.Qc2 Qb7 17.dc5 Rc5 18.Qd2 Bb2 19.Qb2 Rc1=; 14...Re8 15.Rac1 Qc7 16.Qa3 Red8 17.Rc2 Qb7 18.dc5 Bb2 19.Qb2 bc5=; 14...h6 15.Rac1 Qc7 16.Qa3 Rfd8 17.Rc2 Qb7 18.dc5 Bb2 19.Qb2 bc5=) 15.Rac1 Qa8 16.Qa3 Rfc8 17.dc5 Bb2 18.Qb2 Nc5 19.Qa3 Ne4=.

11.ba6 Ba6 12.a4 Ra7 (12...Qc7 13.dc5 Nc5 14.Be5+=) 13.Qb3 (13.Rb1 Qa8=) 13...Qa8 (13...cd4 14.Bd4 Nc5 15.Qb2=) 14.Rfd1 (14.Rfb1 Rd8=) 14...Rc8 (14...cd4 15.Bd4 Nc5 16.Qc3= (worse is 16.Qb6 Rb7 17.Qa5 Nb3 18.Nb3 Bb4+=)) 15.Ne5 (15.Bd3 cd4 16.Bd4 Nc5 17.Bc5 bc5+=) 15...Ne5 (15...cd4 16.Bd4 Ne5 17.Be5=) 16.de5 Nd7 17.f4 (17.Qc2 Rd8=) 17...Bb7+= 18.Bf3 Bc6 The pressure on the isolated pawn grows 19.Nb1 (better is 19.Qc2!?+=) 19...dc4–+ (19...Ra4?! 20.Nc3 Ra1 21.Ra1=; 19...Ba4 20.Ra4 Ra4 21.cd5+=) 20.Bc6 Qc6 (better is 20...cb3 21.Ba8 Rca8–+) 21.Qc4= Nb8 (21...Nf8 22.Nc3=) 22.Nc3 Na6 23.Nb5 (23.Rd2 Nc7=) 23...Raa8 (23...Rd7 24.Nd6 Ra8 25.Qb5=) 24.Bc3 Nb4 (24...Nc7 25.e4=) 25.Nd6 (25.Bb4 cb4 26.Qc6 Rc6 27.Kf2=) 25...Rc7 (better is 25...Nc2!? 26.Nc8 Qc8=) 26.Bb4+/– cb4 (26...Ra4 27.Ra4 Qa4 28.Rb1 Bd6 29.ed6+/–) 27.Qb4 Qc5 (27...Rca7 28.Rdc1 Qd7 29.Qb6 Ra4 30.Ra4 Qa4 31.Qb7 Bd6 32.ed6+–) 28.Qd2 (28.Qc5 Rc5 29.Rab1 Rc6+/–) 28...Qc2 (28...Qc6 29.Rac1 Qd7 30.Rc7 Qc7 31.Qb4+/–) 29.Qe1 (29.e4 Rc6+/–) 29...Bd6 (29...Rca7 30.Rdc1 Qd3 31.Rc8 Bf8 32.Rd1+/–) 30.ed6 Rd7 31.Rac1 (better is 31.Qb4!? h6 32.Rd2+–) 31...Qa4+= 32.Ra1 Qc6 33.Ra8 Qa8 34.e4 Qa3 (34...Qa4 35.Rd3+=) 35.e5+/– f6 36.Rb1 (36.Qe2 fe5 37.fe5 Qc5 38.Kh1 Rd8+/–) 36...Kf7 (36...Qd3 37.Kh1 b5 38.Rd1+=) 37.Qf2 (37.Rb6?! Qc5 38.Qf2 Qc1 39.Qf1 Qe3 40.Qf2 Qc1 41.Qf1 Qe3 42.Qf2 Qc1=) 37...Rb7 (37...Qc3!?+/–) 38.Qd4 f5?? (38...Rd7 39.Qb6 Qd3 40.Qb5 Qd4 41.Kh1+–) 39.h3 (better is 39.d7 Rb8 40.d8R Rd8 41.Qd8 Qc5 42.Kh1+–) 39...Ke8 40.Kh2 b5?? (better is 40...Qa6+–) 41.Ra1 Qb3 42.Ra8 Kd7 43.Ra7 Kc6 If Black now would get Qd5 in, he might survive 44.Rb7 Kb7 45.d7 (45.d7 Qc4 46.d8Q Qd4 47.Qd4+–) 1–0. Bennett,Hilton Petrie (2055) – Goundar,Sanmogam, Oceana zt Warwick Fiji, 2002.

11.ba6 Ba6 12.Rb1=.

11.ba6 Ba6 12.Bd3 cd4 13.Nd4 Qc8+=.

12.ab5 Ra1 13.Qa1 Qa8 14.h3 (14.Bc3 Rd8=) 14...Qa1 (14...Qc8 15.Rc1=) 15.Ra1 Ra8 16.Ra8 Ba8 17.dc5 Bc5 18.Nd4 dc4 (18...Bd4 19.Bd4 e5 20.Bc3+=) 19.Nc4 (19.Nc6 c3 20.Bc3 Nd5=) 19...Bd5= 20.Nc6 Ne4 21.N6e5 (21.Bd3 Kf8=) 21...Ne5 22.Be5 Kf8 (22...f6 23.Bc7 Nc3 24.Bd3 Nb5 25.Bb6 Bc4 26.Bc4 Bb6 27.Bb5=) 23.Nb2 (23.Bd3 f5=) 23...Bb3 (23...f6 24.Bc7 Nc3 25.Bf1+=) 24.Bc4 (24.Bd3 Bd6 25.Bd4 Nc5=) 24...Bc4 25.Nc4 f6 26.Bc7 The isolani on b6 becomes a target 26...Nc3 27.Bb6 Bb6 28.Nb6 Nb5 29.g4 (29.Kf1 Nc3=) 29...Nc3 (29...Ke7 30.Kg2=) 30.Kg2 (30.f4 g5 31.fg5 fg5=) 30...e5 31.Nc4 (31.f4 Ke7=) 31...Ke7 32.f3 (32.f4 e4=) 32...Nd5 (32...Ke6 33.Kf2=) 33.h4 (33.Kf2 Ke6=) 33...g6 34.Kg3 Ke6 35.Kf2 (35.g5 f5=) 35...f5 36.g5 f4 (36...Nb4 37.Nb2=) 37.e4 Nc3 38.Nb6 (38.Ke1 Nb5=) 38...Nd1+= 39.Kg2 Nc3 (39...Ne3 40.Kf2+=) 40.Kh3 Kd6 41.Nc4 Ke6 42.Nb2 Ne2 ½–½. Liepert,Luise – De Laporte, Bayern–ch Damen, 1985.

12.ab5 Ra1 13.Qa1 Qc7 14.Rc1=.

12.ab5 Ra1 13.Ba1 Qc7 14.Qc2 (14.dc5 Bc5 15.Qb1 Ra8=) 14...Rc8 (14...cd4 15.Nd4 Rc8 16.Rc1+=) 15.Ne1 (15.cd5!? Nd5 16.Rc1=) 15...cd4+= 16.Bd4 Bd6 (16...e5 17.Bb2+=) 17.g3 (17.f4!?+=) 17...Bb4-/+ 18.Nef3 (18.Bc3 Bc3 19.Qc3 Ne5-/+) 18...dc4 19.Nc4? (better is 19.Bc3 Bc3 20.Qc3–+) 19...Bf3–+ 20.Bf3 Qc4 21.Qc4 Rc4 22.Rd1 (22.Bf6 Nf6 23.Ra1 g5–+) 22...Kf8 (22...e5 23.Ba1–+) 23.Be2 Rc7 24.Rb1 (24.f4 Bc5–+) 24...Bc3 25.Bc3 (25.Rc1 Nd5 26.Bf3 Bd4 27.Rc7 Nc7 28.ed4 Nf6–+ (worse is 28...Nb5 29.Bc6 Na7 30.Bd7–+)) 25...Rc3 26.Kg2 (26.Ra1 e5–+) 26...Ne4 (26...e5 27.Ra1–+) 27.Rf1 (27.Rb2 Ke7–+) 27...Rb3 28.Kg1 (28.Rd1 Ke7–+) 28...Nd6 (28...Rb2 29.Bd3 Ndc5 30.Be4 Ne4 31.f3–+) 29.Rd1 (29.Ra1 Nb5 30.Bc4 Rb2–+) 29...Ke7 30.Rd3 (30.Kg2 Nc5–+) 30...Rd3 (30...Rb2 31.Kf1–+) 31.Bd3 Nc5 32.Be2 Nce4 33.Kf1 (33.Bd3 f5–+) 33...Nc3 34.Bd3 Ndb5 (34...f5 35.f3–+) 35.Ke1 h6 (35...Nd6 36.f3–+) 36.Kd2 Kd6 37.Kc2 (37.h4 e5–+) 37...Kc5 38.Bb5 (38.Kd2 e5–+) 38...Nb5 (38...Kb5?! 39.Kc3 Kc5 40.e4–+) 39.Kd3 (39.g4 Na3 40.Kc3 b5–+) 39...Nd6 (39...Nd6 40.Kc2 b5–+) 0–1. Hasler,Ulrich (1905) – Lloyd,Dave (2060), IECG, 2000.

12.ab5 Ra1 13.Ba1 cd4 14.Bd4 Qc7 15.cd5=.

12.ab5 Qc7 13.Ba3=.

12.ab5 Qc7 13.Qb3 Ne4 14.Ne4 de4 15.Nd2 f5 16.f4 Bf6 17.h3 h6 18.Ra8 Ba8 19.Qc2 g6 20.Nb3 Kh7 21.Qd2 Bg7 22.dc5 Nc5 23.Nc5 Qc5 24.Bg7 Kg7 25.Qc3 Kh7 26.Rd1 Qc7 27.Qd4 Rf7 28.Kf2 g5 29.g3 gf4 30.gf4 Qe7? (better is 30...Bb7!?+/–) 31.Qd8+– (worse is 31.Qb6 Qh4 32.Kf1 Qh3 33.Ke1 Qg3 34.Kd2 Re7+/–) 31...Qa7 32.Qd6 Re7? (32...Qe7 33.Qe7 Re7+–) 33.Ra1!! Qb7 (33...Qa1 34.Qe7 Double attack (34.Qe7 Deflection; 34.Qd4 Decoy)) 34.Ra8! (34.Ra8 Qc7 35.Qc7 Rc7 36.Re8+–) 1–0. Osmak,Yulia – Petrova,Irina (1985), Kiev–ch (Women), 2009.

12.ab5 Qc7 13.Qc2 Ra1 14.Ra1 Ra8 (14...cd4 15.Nd4 Bd6 16.f4=) 15.Ra8 Ba8 16.Ba3 (16.cd5 Nd5 17.Bd3 h6+=) 16...dc4= 17.Nc4 Bd5 (17...Be4 18.Bd3 Bf3 19.gf3=) 18.Bd3 (18.Ncd2 Qb7=) 18...Bf3 19.gf3 Nd5 (19...Bd8!?=) 20.Bh7+= Kf8 21.dc5 Bc5 22.Bb2 (22.Be4 Ba3 23.Na3 Nc5+=) 22...N7f6 (22...g6 23.Bg6 fg6 24.Qg6 Bd6 25.Qe6 Bh2 26.Kg2 Qc4 27.Qd7 Bc7 28.Ba3 Kg8 29.Qe8 Kg7 30.Bb2 Nc3+–) 23.Be4+/– Qd7 (23...Qd8 24.Qd3+/–) 24.Bf6 gf6 (24...Nf6 25.Bc6 Qc7 26.Qd3+/–) 25.Qd3 (25.Qb2 Ke7 26.Qb3 Nb4+/–) 25...Qb5 26.Bd5 ed5 27.Qd5 Qb1 28.Kg2 Qg6 29.Kf1 Qb1 30.Ke2 Qa2 31.Kf1 (better is 31.Ke1!?+/–) 31...Qb1= 32.Kg2 Qg6 33.Kh3 Qh7 ½–½. GuestDFHJ – wren, freechess.org, 2018.

12.ab5 Qc7 13.Qc2 Rfc8 14.Ra8 Ra8 15.Ra1 Ne8 (15...Ra1 16.Ba1 cd4 17.Nd4=) 16.e4 (16.Ra8!? Ba8 17.cd5 Bd5 18.Ne5+=) 16...Ra1= 17.Ba1 cd4 18.ed5 Bd5 19.Bd3 Bf3 20.Nf3 e5 21.Bh7 Kf8 22.Be4 Nb8 23.Bb2 Nf6 24.Bf5 g6 25.Bh3 Nbd7 26.Qe2 (26.Bd7 Nd7 27.Bc1 Kg7=) 26...Bd6 (26...d3 27.Qd2 Qc4 28.Ne5 Ne5 29.Be5–+) 27.Bd7 Nd7 28.Nd2 Nc5 29.Ba3 Ne6 30.Qf3 Kg7 31.Bd6 Qd6 32.Qd5 Qd5 33.cd5 Nc5 34.Nc4 Nd7 35.f3 f5 36.Kf2 Kf6 37.Ke2 g5 38.g3 g4 39.f4 (39.fg4!? fg4 40.Nd6+=) 39...e4-/+ 40.Kd2 Ke7 41.Kc2 Nf6 42.Nb6 Kd6 43.Nc8 Kd7 44.Nb6 (44.Na7 Nd5 45.Nc6 Ne3 46.Kc1 d3–+) 44...Kc7–+ 45.Nc4 Nd5 46.Kd2 Ne3 47.b6 Kb7 48.Nd6? (48.Ne3 de3 49.Ke3 Kb6 50.Kd4–+) 48...Kb6 0–1. Nemeth,Laszlo (2060) – Binder,Tamas (2265), Gyongyos Matra Cup, 2003.

12.ab5 Qc7 13.Qc2 cd4 14.Nd4 Nc5 15.cd5 Bd5 16.Rfd1=.

11.Bc4 a6 12.Qa4=.

11.Bc4 Ne4 12.Bd3 (12.Ne4 Be4 13.d5 ed5 14.Bd5 Bd5 15.Qd5 Bf6 16.Bf6 Nf6=) 12...Ndf6 13.Ne4 Ne4 14.Be4 (14.Qc2!? Qd5 15.dc5 bc5 16.Rfd1+=) 14...Be4+= 15.dc5 Bc5 16.Qd8 Rad8 17.a4 (17.Rfd1 Bd3 18.a4 Bc2=) 17...Rd5 (17...Bf3 18.gf3 Rd2 19.Bc3+=) 18.Ba3 (18.a5 Bd3-/+) 18...Rfd8-/+ 19.Bc5 bc5 20.Rfc1 h6 21.Ne1 Bg6 (21...e5 22.f3 Bf5 23.e4+–) 22.f3 White gets in control 22...f5 23.Rc3 e5 24.Rac1 Attacking the isolated pawn on c5 24...Rc8 25.Nd3 Increasing the pressure on the isolated pawn on c5 25...Rcd8 (better is 25...c4!?+=) 26.Nc5+/– f4 (26...Rd2 27.f4+/–) 27.ef4 ef4 28.Ne6 Rd1 29.Rd1 Rd1 30.Kf2 Rd2 31.Ke1 Rg2 32.Nf4 Rc2 33.Rc2 Bc2 34.a5 Ba4 (34...g5 35.Ne6 Kf7 36.Nd8 Ke8+–) 35.b6+– ab6 36.ab6 The passed pawn on b6 will quickly become a dangerous weapon 36...Bc6 37.Kf2 Kf7 38.Nd3 Ke7 39.Nc5 Kd6 40.b7 (40.Ne4 Ke5+/–) 40...Kc7 41.Ne6 Kb7 42.Ng7 (42.Ng7 Kc7 43.Nf5+/–) 1–0. Grehl,Siegfried – Morin, corr SOK–89–29, 1989.

11.Nc4 a6 12.dc5 Bc5 13.ba6 Ba6 14.Qc2=.

11.Nc4 Rc8 12.a4 a5 13.dc5 Bc5 14.Nd6 Bd6 15.Qd6 Rc2 16.Bf6 Nf6 17.Qd8 Rd8 18.Nd4? Rd4!–+ 19.ed4 Re2 20.Rac1 Nd5 21.Rc4 g6 22.Rfc1 Rb2 23.g3 Rb4 24.Kf1 Rc4 25.Rc4 Nb4 26.Ke2 Be4 27.Kd2 Nd5 28.f4 Kg7 29.h3 Kf6 30.Rc1 h5 31.Rc6 Kf5 32.Rc8 Bg2 33.Ke2 Bh3 34.Kf2 Ke4 35.Rf8 f6 36.Rg8 Bf5 (37.Rc8 e5–+) 0–1. hal1958 – flavioconf, playchess.de, 2003.

11.Nc4 Rc8 12.Nce5 cd4 13.Bd4 (13.Nc6 Bc6 14.bc6 Rc6 15.Nd4 Rd6 16.Qa4 Qa8 17.Rfd1 Nc5 18.Qc2 Qe4 19.Qe4) 13...Nc5 (13...Nd5 14.Rc1 (14.Nd7 Qd7 15.Qb3 Qc7 16.Be5 Qc5 17.Bd4 Qc7 18.Be5 Qc5 19.Bd4; 14.Nc6 Bc6 15.bc6 Rc6 16.Bb5 Rc7 17.e4 N5f6 18.Qe2 Nc5 19.Rfd1) 14...Nc5 15.Bc4 f6 16.Nd3 Ne4 17.Nf4 Nf4 18.ef4 Bd5 19.Qa4; 13...Ne5 14.Ne5 Bd6 15.f4 Ne4 16.Rc1 Rc1 17.Qc1 Be5 18.fe5 Qe7 19.Rf4) 14.Qd2 (14.Rc1 Nd5 15.Bc4 f6 16.Nd3 Ne4 17.Nf4 Nf4 18.ef4 Bd5 19.Qd3; 14.Bc4 Nfe4 15.Rc1 Bd6 16.Bd3 f6 17.Nc6 Qd7 18.Bc5 Nc5 19.Nfd4; 14.Qb1 Bd6 15.Rd1 Nfe4 16.Nc4 Bd5 17.Qb2 Nf2 18.Kf2 Bc4 19.Bg7; 14.Qc2 Nfe4 15.Nc6 Bc6 16.bc6 Rc6 17.Ne5 Rd6 18.Rad1 f6 19.Nc4) 14...Nfe4 15.Qb2 Na4 (15...f6 16.Bc5 Bc5 17.Rad1 Qc7 18.Nd7 Rf7 19.Nc5) 16.Qb3 Nec5 17.Qa3 ½–½. Langschmidt,Dirk (2100) – Weber,Bernd (2120), RSX20E – NoEngine–Grossturnier–1, 2010.

11.Nc4 Rc8 12.Nce5 Ne5 A) 13.de5 A1) 13...Ne4 14.Qa4 (14.Bc4 Qd1 15.Rfd1 Rfd8 16.Rac1 h5 17.Ne1 Rd1 18.Rd1 Rd8 19.Rd8; 14.Qb3 Qc7 15.Bc4 Rfd8 16.Rad1 Rd1 17.Rd1 Rd8 18.h3 h5 19.Qc2) 14...Qc7 15.Bc4 h6 16.Rad1 Rfd8 17.h3 Bd5 18.Bd5 ed5 19.Nd2; A2) 13...Qd1 14.Rfd1 (14.Rad1 Nd5 15.Nd2 Ra8 16.g3 Rfd8 17.a3 Nc7 18.f3 a6 19.Nc4) 14...Nd5 15.Nd2 f5 16.Nc4 Rcd8 17.Bf3 Ba8 18.h3 Nc7 19.Ba8; B) 13.Ne5 B1) 13...Qd5 14.f3 (14.Bf3 Ne4 15.dc5 Qc5 16.Qe2 Rfd8 17.Rfc1 Qb4 18.Nc6 Bc6 19.bc6) 14...cd4 15.Bd4 Bc5 16.Rc1 Bd4 17.Qd4 Qd4 18.ed4 Rfd8 19.Bd3; B2) 13...cd4 14.Bd4 (14.Qd4 Bc5 15.Qd8 Rfd8 16.Rfd1 Rd1 17.Rd1 Be7 18.Bc4 h6 19.h3) 14...Bd6 15.f4 Ne4 16.Nc6 Bc6 17.bc6 Rc6 18.Qa4 Qc7 19.Bg7.

11.Nc4 cd4 12.ed4 Nd5 13.a4 N7f6 14.Nce5 Rc8 15.Qb3 Ne4 16.Rac1 Nef6 17.Rc8 Qc8 18.Rc1 Qb8 19.Nc6 Bc6 20.bc6 Rc8 21.Ne5 Bd6 22.Ba6 Rc7 23.Ba3 Be5 24.de5+– Qe8? 25.ef6 Nf6 26.Bb5 Nd5 27.Qg3 g6 28.Bd6 Rc8 29.c7 Qe7 30.Be7 Kg7 31.Bd6 f5 32.Qe5 Kh6 33.Qe6 Kg5 34.Qd5 Kh6 35.f4 Kh5 36.Qe6 Kg4 37.Qf6 Rf8 38.Qg5 (38.Be2#) 1–0. toll – Quickdraw, ICC, 2003.

11.Nc4 cd4 12.Nd4 Rc8 13.Rc1 Nc5 14.Ne5 (14.Bf3 Nfe4+=) 14...Bd6 15.Ndc6 Bc6 (15...Qc7!?=) 16.Nc6+/– Qc7 17.g3 (better is 17.Bf6 gf6 18.f4+/–) 17...Qc6?? (better is 17...e5+=) 18.bc6+– Bf4 (18...Be7 19.Bf6 Bf6 20.Bf3+–) 19.ef4 Nd3 (19...Rfd8 20.Qc2 Rc6 21.Bf6 gf6+–) 20.Bd3 Nd7 21.cd7 Rc2 22.Qc2 (22.Rc2 f5 23.Rc8 h6 24.Qg4 fg4 25.Bg6 e5 26.Rf8 Kf8 27.d8Q) 22...Rc8 (22...Rd8 23.Qc8 f5 24.Qd8 Kf7 25.Qe8) 23.dc8Q (23.Qc8?!=; 23.dc8R?!=) 1–0. DEFFM – GuestLDVN, freechess.org, 2018.

11.Nc4 Ne4 12.Nfe5 cd4 (12...Ne5 13.Ne5 Rc8 14.f3=) 13.Bd4 (13.Nd7 Qd7 14.f3 Nf6=) 13...Ne5 14.Ne5 Bc5 (14...Rc8 15.Rc1=) 15.Rc1 Rc8 (15...a6 16.f3 Bd4 17.Qd4=) 16.Bf3+= Qe7 17.Qa4 (17.Nc6 Bc6 18.bc6 e5 19.Be4 ed4=) 17...Bd4= 18.ed4 White fights for the Initiative 18...Ba8 (18...Bd5 19.Be4 Be4 20.f3=) 19.Rfe1 (19.Qa6 Rc7 20.Rc7 Qc7 21.Be4 Be4+=) 19...Nc3+= 20.Qb3 Ne2?? (better is 20...Bf3 21.Rc3 Bd5=) 21.Be2+– Rc1 22.Rc1 Qg5 Threatening mate... how? 23.Rc6 Bc6 24.bc6 The passed pawn on c6 quickly leads to threats (24.Nc6 Qd2 25.Bf1 Qc1+–) 24...Qc1 (24...Qd2 25.Bd3+–) 25.Bf1 Qd2 26.Qa4 f6 27.Nd7 Rc8 28.Qa7 Qc1 29.Nb8 (better is 29.Nb6!? Rc6 30.Qe7 h6+–) 29...Qf4 30.Na6 (30.Qb7 Qb8 31.Qb8 Rb8+–) 30...Qd4 (30...Qd6 31.Bb5 Qf4 32.g3 (worse is 32.Qb6 Qc1 33.Bf1 Qc6 34.Qc6 Rc6+–) 32...Qd4 33.Qb7 Qd1 34.Bf1+–) 31.Qb7 (better is 31.Qe7!? Kh8 32.c7 Qa4+–) 31...Qd8 32.c7 Qd7 33.Qb6 Kf7 34.Qb7 (better is 34.Qb5 Qe7 35.Qb7+–) 34...Ke7 (34...f5 35.Qf3+–) 35.g3 (35.h3 h5+–) 35...e5 (35...g5 36.Bb5 Qd1 37.Kg2 Qd5 38.Qd5 ed5 39.Bc6+–) 36.Qb4 (better is 36.Bb5!? Qd1 37.Kg2 Qg4+–) 36...Kf7 37.Bc4 Kg6 38.Qb1 (better is 38.Bd3 Kf7 39.Qc4 Ke7 40.Be4+–) 38...f5 (38...Kh6+–) 39.Qb6 Kg5 (39...Qc6 40.Qc6 Kg5 41.h4 Kg4 42.Be2 Kh3 43.Qg2) 40.Qe6 (40.h4 Kg4 41.Be2 Kh3 42.Qb1 Qd1 43.Qd1 Rc7 44.Bf1) 40...Qd1 (40...Qe6 41.Be6 Rh8 42.a4+–) 41.Bf1 (41.Bf1 Rh8 42.h4 Kg4 43.Qe5 Qf1 44.Kf1 Kh3 45.Qf5 Kh2 46.Qe4 Kh3 47.Kg1 g5 48.hg5 Rc8 49.Qe6) 1–0. Kochanov,Anton – Yakovlev,Evgeny, RUS–ch U16 sf, 2000.

11.a4 a5 12.ba6 (12.Rc1 A) 12...Rac8= 13.Re1 (13.Bd3 Rfd8 14.Re1 Qd6 15.cd5 Qd5 16.e4 Qh5 17.Nc4 cd4 18.Bd4=; 13.cd5 Bd5 14.Qc2 Qb7 15.Nc4 Rfd8 16.Rfd1 Be4 17.Qb3 cd4 18.Bd4=; 13.Nb3 dc4 14.Bc4 Rfd8 15.Qe2 Ne4 16.Bd3 Bd5 17.Be4 Be4 18.Nbd2=) 13...Qd6 14.cd5 Bd5 15.Bd3 cd4 16.e4 Qb4 17.Bd4 Rc1 18.Qc1+=; B) 12...Rfd8 13.Re1 (13.Bd3 Rac8 14.Re1 Qd6 15.cd5 Qd5 16.e4 Qh5 17.Nc4 cd4 18.Bd4=; 13.cd5 Bd5 14.Qc2 Qb7 15.Rfd1 Rac8 16.Bc4 cd4 17.Bd4 Ba3 18.Rb1=; 13.dc5 Nc5 14.Be5 Qd7 15.cd5 Nd5 16.Rc4 Rac8 17.e4 Nf6 18.Qb1=) 13...Rac8 14.Bd3 Qd6 15.cd5 Qd5 16.e4 Qh5 17.Nc4 cd4 18.Bd4=; 12.dc5 Nc5 13.Be5 (13.Rc1 Rac8 14.Be5 Qd7 15.cd5 Bd5 16.Nc4 Qa7 17.Nd4 Rfd8 18.Bf3=) 13...Qd7 14.Nb3 Nb3 15.Qb3 Rac8 16.Rfd1 Rfd8 17.cd5 Bd5 18.Qb2=) 12...Ba6 13.Qb3 (13.cd5 ed5 14.dc5 (14.Ba6 Ra6 15.dc5 bc5 16.Qc2 Rc8 17.e4 c4 18.Rfc1=) 14...bc5= 15.Ba6 Ra6 16.Qc2 Rc8 17.Rfc1 c4 18.e4=) 13...Bd6 (13...cd4 14.ed4 dc4 (14...Rfc8 15.Rfc1 dc4 16.Nc4= Qd8 17.Nfe5 Nd5 18.Nd7=) 15.Bc4 Bc4 16.Nc4 Nd5 17.Nfe5 Rfd8 18.Rfc1=) 14.Rfc1= Ne4 (14...Rfd8 15.Bd3 cd4 16.Bd4 Nc5 17.Bc5 bc5 18.cd5+=) 15.g3 (15.Ne4 de4 16.Ne5 Rfd8= 17.Nd7 Rd7 18.h3=; 15.Qd1 Rfc8 16.dc5 Ndc5 17.cd5 Be2 18.Qe2=) 15...Ndf6 (15...Rfc8 16.Rab1 Bb7 17.Ba3 Bc6 18.cd5+=) 16.Bf1 (16.Bd3 Rfc8 17.Rab1 cd4 18.Bd4+=) 16...Bb7 17.Bg2 (17.cd5 ed5 18.dc5+=) 17...Bc6 (17...Rfc8 18.Qd1+= (18.Ne4 Ne4 19.dc5 Nc5 20.Qd1+=)) 18.Ne4 (18.Qc2=) 18...Ne4 19.cd5 Bd5 20.Qc2 Qb7 21.Ne1 (21.dc5 Rfc8+=) 21...Ng5 22.Bd5 (22.f4 Ne4+=) 22...Qd5 23.h4 Ne4 24.dc5 Bc5 25.Rd1 (25.Qd1 Rfd8+=) 25...Qb7 (25...Qf5 26.h5-/+) 26.Qd3 (26.Nd3 Rfc8 27.Qe2 Bd6+=) 26...h6 (26...Ra5 27.Be5-/+) 27.Qb5 (27.Qd7 Qd7 28.Rd7 Ra5+=) 27...Qb8 (27...Ra5!? 28.Qe2 Rfa8+=) 28.Qc6 Nd6 (28...Ng3 29.fg3 Qg3 30.Qg2 Qe3 31.Kh1=) 29.Be5 Rd8 (29...Rc8 30.Bd6 Rc6 31.Bb8 Rb8 32.Rd7=) 30.a5+= f6 (30...Ra7!?+=) 31.Bd6+/– ½–½. Bennett,Hilton (2070) – Turner,Michael, ch–NZL, Wanganui NZL (2), 2003. (=1.Nf3 Nf6 2.b4 e6 3.b5 b6 4.Bb2 Bb7 5.e3 Be7 6.c4 0-0 7.Be2 d5 8.0-0 Nbd7 9.d4 c5 10.Nbd2 Qc7)

11.a4 Rac8 12.Rc1 Rfd8 13.Bd3 Qb8 14.Ne5 (14.cd5 Bd5 15.e4 Bb7=+) 14...Ne5 (14...cd4 15.Nd7 Rd7 16.ed4=+) 15.de5 Ne4 16.cd5 Nd2 (worse 16...ed5 17.Qe2+=) 17.Qd2 Bd5 18.Qc2 h6 19.Rfd1 Qa8 20.e4 Bb7 21.Qc4 Bg5 22.Ra1 Rd7 23.g3 Rcd8 24.h4 Be7 25.f3 Rc8 (25...a5 26.Rd2=) 26.a5+= Qb8 27.a6 Ba8 28.Kg2 Rcc7 29.Rac1 Qd8 30.Rd2 Kf8 31.Rcd1 Kg8 32.Kh2 Kf8 33.Kg1 Kg8 34.Bc3 Kh8 35.Bb2 Kg8 ½-½. onur604 (2320) - Rakeshh (2330), Casual Rapid game, lichess.org, 2021.

11.a4 Rfc8 A) 12.dc5 Nc5 13.cd5 (13.Be5= Qd8 14.cd5 Nd5 15.Rc1 a6 16.e4 Nf6 17.Bf6 Bf6 18.e5+=) 13...Bd5 14.Be5 Qb7 15.a5 ba5 16.Ra5 a6 17.ba6 Na6 18.Qb1=; B) 12.Rc1 B1) 12...Bd6 13.cd5 (13.dc5 bc5 14.cd5 ed5 15.Bd3 a6 16.Bf5 Rcb8 17.Rb1 ab5 18.ab5=) 13...Nd5 14.dc5 Nc5 15.Ne4 f6 16.a5 Nf4 17.Nd6 Ne2 18.Qe2+=; B2) 12...Qd8 13.Ne5 (13.Bd3 a6 14.ba6 Ba6 15.Qc2 cd4 16.Bd4 Nc5 17.Bc5 Rc5 18.Rfd1+=; 13.Nb3 a6 14.dc5 Nc5 15.Nc5 Bc5 16.cd5 Nd5 17.Qb3 ab5 18.Bb5=; 13.Re1 a6 14.cd5 Nd5 15.ba6 Ba6 16.Bc4 Bc4 17.Nc4 cd4 18.e4=) 13...cd4 14.Nd7 Qd7 15.Bd4 Rd8 16.Nf3 dc4 17.Ne5 Qd5 18.Bf3=; B3) 12...a6 13.Bd3 (13.cd5 Nd5 14.Qb3 ab5 15.Bb5 Ba6 16.Ba6 Ra6 17.Rfd1 Qc6 18.Rc4=) 13...ab5 14.ab5 Qd6 15.cd5 Qd5 16.Rc4 Ra2 17.e4 Qh5 18.Qb3=.

11.a4 Bd6 12.h3 dc4 (12...e5!?+=) 13.Nc4= cd4? (better is 13...Be7=) 14.Nd6+– (14.Bd4?! Bc5=; 14.Qd4?! Be7=) 14...Qd6 15.Nd4 (15.Ba3!? Qc7 16.Bf8 Kf8 17.Rc1+–) 15...Nc5 (15...Rfc8 16.a5+=) 16.Ba3 (16.Nc6!? Qd1 17.Rfd1 (17.Bd1?! Nd5=; worse is 17.Rad1 Na4 18.Bd4 a6=) 17...Bc6 18.bc6+=) 16...Rfd8 (16...Nfe4 17.Bd3 Rfd8 18.Be4 Be4 19.Qg4=) 17.Bf3 Bf3 (17...Qc7 18.Bb7 Qb7 19.Qe2=) 18.Qf3+= Qd5 (18...Nfe4 19.Rfc1+=) 19.Bc5+/– Qc5 20.Nc6 Re8 21.Rfd1 a6 (21...Qc4 22.Rd4 Qc2 23.Qd1 Qd1 24.Rad1+=) 22.ba6 (22.Rdc1 Qd6 23.a5 ab5 24.a6+/–) 22...Ra6+= 23.Qe2 Raa8 24.Rdc1 (24.Qb5 Ne4 25.Rdc1 Qb5 26.ab5 Ra1 27.Ra1 Nd6=) 24...Qd5 (24...Ra4 25.Rab1 Qd6 26.Rb6=) 25.Nd4 (25.Qb2 Qe4+/–) 25...Ne4 (25...Rec8 26.Qa6 Rc1 27.Rc1=) 26.Nb5 Qd2 27.Qf3 (better is 27.Qd2 Nd2 28.Rc2+=) 27...Nc5?? (better is 27...Ra4! 28.Rab1 Rb4+=) 28.Nc7+– Ra4?? (28...e5+–) 29.Ne8 Kf8 (29...h6 30.Qg3 g5 31.Qe5+–) 30.Qc6 Nd3 (30...Ra1 31.Ra1 Qd5 32.Qd5 ed5+–) 31.Qd6 Kg8 32.Nf6! gf6 (32...gf6 33.Qg3) 33.Qg3 Kf8 (33...Rg4 34.Qg4 Kf8 35.Rc8 Ke7 36.Ra7 Kd6 37.Qd4) 34.Rc8 Ke7 35.Qc7 1–0. Winterfeldt,Steffen (1785) – Alsheimer,Patrick (1610), Mittelfranken–ChTB2b, 2008.

11.a4 Rfd8 12.Qb1 (12.Rc1 a6=) 12...dc4 (12...cd4 13.Nd4 Nc5 14.cd5 Bd5 15.Rc1=+) 13.Nc4 Rac8 14.Nce5 (14.Rc1 Be4 15.Qa2 Bd5=) 14...cd4 (14...Ne5 15.Ne5 Bd6 16.Bd3=+) 15.Rc1= Qd6 (15...Qb8 16.Nc6 Bc6 17.bc6=) 16.Bd4 (16.Ba3 Qa3 17.Ra3 Ba3 18.Rc8 Rc8+=) 16...Rc1= 17.Qc1 Rc8 18.Qb2 Nc5 (18...Ne5 19.Ne5 Qb4 20.Qb4 Bb4 21.Rd1=) 19.a5 h6 20.ab6 ab6 21.Ra7 (21.Nc4 Qc7+=) 21...Rc7 (21...Qb8 22.Qa2=) 22.h3 (22.Nc6 Ncd7 23.Ne7 Qe7+=) 22...Nfe4 (22...Be4 23.Nc4 Qd8 24.Ra1+=) 23.Qa3 (23.Nc4!? Qd8 24.Bg7+–) 23...Qd8 (23...Bd5 24.Bc4 Bb7 25.Qb2=) 24.Qa2 (24.Nc6 Bc6 25.bc6 A) 25...Rc6? 26.Re7 Nb3 27.Bb2+– (27.Qb3?! Qe7 28.Qb1 Qb7+–); B) 25...Bd6+=) 24...Qb8 25.Bc4 Kf8 (25...Nd6 26.Nd2=) 26.Qa1 Nd6 (26...Kg8 27.Ra2=) 27.Bc5+= Nc4 28.Be7 Ke7 29.Rb7 Qb7 30.Nc4 Rc4 31.Qg7 Qd5 (31...Rc1 32.Kh2 Qe4 33.Ne5+=) 32.Ne5+– Rc1 33.Kh2 Qb5 34.Qf7 Kd6 35.Qf4?? (better 35.f4+–) 35…Qe5–+ (35...Qe5 36.g3 Qf4 37.gf4 b5–+) 0–1. kovacic (2215) – TrevorLewisOfNottingham (2350), ChessWorld.net, 2015.

11.Qb1 Rac8 12.Rc1 Rfd8 (12...dc4 13.Bc4 Rfd8 14.Bd3=) 13.a4 (13.cd5 Nd5 14.Bc4 Qb8=) 13...Bd6 (13...a5 14.cd5 Nd5 15.Bd3=) 14.h3 (14.cd5 ed5 (14...Bd5? 15.e4+–) 15.dc5 bc5=) 14...e5 (14...a5 15.cd5 Nd5 16.Ne4=) 15.cd5 Bd5 (15...Nd5 16.de5 Ne5 17.Nc4 Nc4 18.Bc4+=) 16.dc5 (16.e4 Ba8 17.d5 Nh5+=) 16...Bc5 (16...Nc5 17.Bc4=) 17.Nc4 White prepares the advance a5 (17.Bc4 Qd6=) 17...Bf3 (17...e4!? 18.Nd4 Qb7=) 18.Bf3+= Re8 19.Bc6 Re7 (19...a6 20.Qf5+/–) 20.a5 Nb8 21.ab6 (21.Bf3 Nbd7+/–) 21...ab6 22.Bf3 Nbd7 23.Ra6 (23.Qf5 h6+/–) 23...e4 (23...Ree8 24.Bc6+/–) 24.Be2 (24.Bf6 Nf6 25.Nb6 Rb8+/– (25...ef3? 26.Nc8 Qc8 27.Rc6+–)) 24...Re6+= 25.Qa1 h6 (25...Qd8 26.Rd1 Qe8 27.Ra7+=) 26.Ra7 (26.Rd1 Bd6+/–) 26...Qd8+= 27.Rd1 Qe8 28.Bg4 Re7? (better is 28...Ng4 29.Rdd7 Nf6 30.Rf7 Qf7 31.Rf7 Kf7 32.Ne5 Kg8+/–) 29.Bf6+– Nf6 30.Bc8 Qc8 (30...Ra7 31.Qa7 Qc8 32.Nb6 Qe8+–) 31.Ra8 (31.Ra8 Qe8 32.Re8 Re8 33.Nd6+–) 1–0. Bartle,Georg – Paetzold,Hans, 18 sen. DSen EM (GrB) op, 2006.

11.Qb1 cd4 12.Bd4 e5 13.Bb2=.

11.Qb3 cd4+= 12.ed4 Qf4 (12...dc4 13.Nc4 Qf4=) 13.a4 (13.Qe3 Qe3 14.fe3 Ng4 15.cd5 ed5=) 13...Ng4 (13...dc4 14.Nc4 Rfc8 15.Bc1+=) 14.h3 (14.Bc1 dc4 15.Nc4 Qc7+=) 14...Nh2 (14...dc4 15.Bc4 Ngf6 16.Qe3=) 15.Rfd1 Nf3 (15...dc4 16.Bc4 Nf3 17.Nf3 Bf3 18.Qf3 Qf3 19.gf3+=) 16.Qf3 Qh4 (16...Qc7 17.Qe3=) 17.a5+= Rab8 18.Qg4 (18.a6 Ba8 19.Qe3=) 18...Qg4= 19.hg4 Rfc8 (19...dc4 20.Nc4 Bd5 21.Ne3+=) 20.ab6 ab6 (20...Nb6? 21.c5 Ra8 22.cb6 ab6 23.Bd3+–) 21.Ra7 Nf6 (21...Bb4 22.cd5 Rc2 23.de6 fe6 24.Bc1=) 22.g5+= Ne8 (22...Nd7 23.cd5 ed5 24.Bg4=) 23.cd5 Rc2 24.Bc1 Bg5 (24...ed5 25.Bd3 Rc3 26.Nb1+/–) 25.de6 fe6 26.Nb3 Re2 (26...Bc1 27.Bd3 (worse is 27.Nc1 Nd6=) 27...Rb2 28.Nc1+=) 27.Bg5 Bd5 28.Nd2 (28.Kf1 Rb2 29.Nd2 Rb5-/+) 28...Nd6= 29.Rb1 (better is 29.Bf4 Rd8 30.Be5=) 29...Rc8?? (better is 29...Rb7 30.Ra8 Kf7=) 30.Kf1+– Nb5?? (better is 30...Rd2 31.Bd2 Rc2+/–) 31.Rb5= (31.Ke2 Na7 32.Rb6 Nc6+=) 31...Rd2 32.Bd2 Bc4 A double attack 33.Kg1 (33.Ke1 Bb5 34.Rb7 Rc6=) 33...Bb5+= 34.Bf4 Rd8 (34...Bd3 35.Be5=) ½–½. Trokenheim,Marek – Nemec,Zdenek, TT–12 ETC, 2004.

11.Qb3 Bd6 12.h3 (12.Rfb1 cd4 13.Bd4 e5-/+) 12...Rac8 (12...cd4 13.Bd4 e5 14.Bb2+=) 13.Rfc1 Rfd8 14.a4 (14.Bd3 cd4 15.ed4 Qb8=) 14...Ne4 (14...cd4 15.cd5 Nc5 16.Qd1 de3 17.fe3 Nd5 18.Ra3-/+) 15.cd5 (15.Qd3 cd4 16.cd5 Nc3 17.ed4 Ne2 18.Qe2 Qb8 19.de6 Rc1 20.Rc1 Re8 21.ef7 Kf7 22.Qc4 Kg6+–) 15...Nd2+= 16.Nd2 ed5 (16...Bd5 17.Nc4+=) 17.dc5= bc5 18.Nf3 c4 19.Qc3 Threatening mate: Qxg7 19...f6 20.Nd4 Be5 (20...Bh2 21.Kh1 Be5 22.Bf3=) 21.Bg4 Re8 22.a5 Rcd8 (22...Bh2 23.Kh1 Be5 24.b6 ab6 25.ab6+=) 23.Ba3 Nc5 24.Bc5 Qc5 25.Rcb1 g6 (25...Bd4!? 26.ed4 Qe7+=) 26.b6+= a6 27.Be6 Kg7 28.f4 Bd4 29.ed4 Qd6 30.f5 Qf4 31.Rf1 Qd6 32.Rf3 (32.Rab1 Rb8+/–) 32...Re7 33.Raf1 Rde8 34.h4 (34.Rb1 h6+=) 34...Kh8 35.Rg3 Rg7 36.Qf3 (36.Re3 Rge7 37.Rfe1 Kg7+=) 36...Rge7= 37.Qg4 Bc6 38.h5 g5 39.h6 (39.Rc3 Qb4 40.Rfc1 Qa5–+) 39...Qb4 40.Qh5 (40.Ra1!?=) 40...c3+= 41.Rg5?? (better is 41.Re1+=) 41...Qd4 42.Kh1 fg5 43.Qg5 Re6 (better is 43...c2 44.Kh2 Qe5 45.Qg3 Qf6–+) 44.f6?? (44.fe6 Bb7 45.e7 Qh4 46.Qh4 Kg8 47.Qg5 Kh8 48.Qg7) 44...Qf6 (better is 44...Rg8 45.Qf4 Re4–+) 45.Rf6+– Rg8 (45...Re1 46.Kh2 Rg8 47.Qh4+–) 46.Rf8!! The mate threat is Qxg8 (46.Rf8 Re1 47.Kh2 Rh1 48.Kh1 Rf8 49.Qg7; 46.Re6?! Rg5 47.Rc6 d4=) 1–0. Zahn,Richard (1815) – Pintar,Bozidar (2015), Goch op, 1990.

11.Qb3 Rfd8 12.a4 a5 13.Rac1 Qb8 14.Rfd1 Qa7 15.cd5 ed5 16.Ba3 (16.dc5!? bc5 17.Nh4+=) 16...c4= 17.Qb2 Ba3 18.Qa3 Nf8 19.Ne5 N6d7 20.Nd7 Rd7 21.Bg4 Rdd8 22.Nf3 (22.e4 de4 23.Nc4 Bd5+/–) 22...Ng6 23.Bf5 Bc8 24.Bg6 hg6 25.Ne5 Re8 (25...Qc7 26.Re1+/–) 26.h3 (better is 26.e4!?+–) 26...Qc7+= 27.Re1 Re5 (better is 27...Bf5!?+=) 28.de5+– Qe5 29.Qc3 (29.e4 Bb7+–) 29...Qd6 (better is 29...Qc3 30.Rc3 Bf5+/–) 30.Qd4 Qd7 (30...Qe6+–) 31.Qb6 Bb7 32.Qd4 Re8 33.Red1 Qc7 34.f3 Qg3 35.Qf4 (35.Qb6!? Bc8 36.e4 Be6+–) 35...Qf4 36.ef4 Rc8 37.Rc3 Rc5 (37...Kf8 38.Kf2+–) 38.Kf2 Kf8 39.Ke3 Ke7 40.Kd4 Rc8 41.Re1 Kd6 42.Re5 (42.Rce3 Rc7+–) 42...Rh8 43.Re2 (43.Rce3!? Rh4 44.g3 Rh3+–) 43...Rh4+/– 44.Ke3 (44.g4 Rh8+–) 44...Rh8 (44...Kc5 45.Rc1+=) 45.Kf2 Kc5 (45...Rc8!?+/–) 46.Re7+– Kb4 47.Rc1 (47.Rb7 Kc3 48.Rf7 d4-/+) 47...Rb8 (47...Bc8 48.Rf7 Be6 49.Rg7 Bf5+–) 48.Rf7 Ka4 49.Ke3 (49.Rg7 Kb3 50.Rg6 Kb2+–) 49...Bc8 50.Ra1 Kb4 51.Kd4 Bb7? (better is 51...Be6 52.Ra7 Rb5+–) 52.Rb1 Ka3 53.g4 White plans f5 (53.Rg7 Ka2 54.Re1 Ba8+–) 53...Ka2 54.Re1 Kb3 (54...Ba8 55.Ra7 Kb3 56.b6+–) 55.f5 (better is 55.Rg7 a4+–) 55...gf5 56.gf5 a4 57.Rg7 a3 58.f6 Ba8 (58...a2 59.Rge7 Rf8 60.Rb7 Rf6 61.Ra7+– (worse is 61.Kd5 c3+–)) 59.f7 Rf8 60.Rg8 Rf7 61.Ra8 Rf3 62.b6 Rf7 63.b7 Rb7 64.Rb1 Ka2 (64...Kc2 65.Rb7 Kc1 66.Ra3 Kd2 67.Ra2 Kc1 68.h4 c3 69.Kd3 d4 70.Ra1) 65.Rb7 c3 66.Kc3 d4 67.Kd4 Ka1 68.Ra3 1–0. Osmak,Yulia – Ostiak,Diana, UKR–ch U12 Girls, 2009.

11.Rc1 a6 12.dc5 Bc5 (12...bc5 13.cd5 ab5 14.de6 fe6 15.Bf6 Bf6 16.Bb5=) 13.cd5 Nd5 14.a4 (14.Qb3 Rfd8=) 14...ab5 (14...Rfd8 15.Qb3=) 15.ab5 (15.Bb5 Rfd8=) 15...Ra2 16.Qc2 Rfa8 17.Ng5 (17.Bc4 Nb4 18.Qc3 Nf6=) 17...Nf8 (17...N7f6 18.Bc4 Ne3 19.fe3 Be3 20.Kh1 Rb2 21.Qb2 Bg5 22.Bd5=) 18.Nge4= Rc8 (18...R8a7 19.Nc3 Nc3 20.Qc3=) 19.Qb3 (19.Nc5 bc5 20.Bc4 Raa8+=) 19...Raa8 (19...Rca8 20.Bc4+=) 20.Nc5 bc5 21.Nc4 Nd7 22.Bf3 (22.Rfd1 Rcb8+=) 22...Rcb8 23.Rfd1 (23.Ra1 N5b6 24.Qc3 f6+=) 23...Bc6 24.Bd5 (24.Na3 Qb7+=) 24...Bd5= 25.Qc3 (25.f3 Bc4 26.Qc4 e5=) 25...f6 26.Na3 Rc8 (26...Nb6 27.Qc2=) 27.Qd2 (27.Qc2 f5=) 27...Nb6= 28.f3 (28.Qc2 Qb7 29.f3 c4=) 28...Bb3+= 29.Re1 (29.Rf1 c4+=) 29...e5 (29...c4 30.e4+=) 30.e4 (30.f4 c4+=) 30...Bf7 (30...c4 31.Qf2-/+) 31.Re3 (31.Red1 c4 32.Qe3 Be6+=) 31...c4+= 32.Nb1 (32.Kh1 Qc5+=) 32...Qc5-/+ 33.Nc3 Rd8 (33...Be8 34.Qf2-/+) 34.Qf2 Na4 35.Re2 Qb4 (35...Nc3!? 36.Bc3 Qb5-/+) 36.Na4+= Qa4 37.b6 Qc6 (37...Rab8 38.Bc3+=) 38.Bc3 (38.Rb1 Qb7=) 38...Rd3 (38...Rd3 39.Bb4 Rb8=). Brieger,R – Patteson,B, Texas USA, 1994.

11.Rc1 Rfd8 12.cd5 Bd5 13.Qc2 Rac8 (13...Qb7 14.Rfd1=) 14.Qb1 Qb8 15.a4 (15.Ba3 Bf8=) 15...Bb7 (15...cd4 16.Bd4 Bd6 17.Bc4+=) 16.Bd3 (16.Rfd1 Bd5=) 16...h6 17.Ba3 (17.Rfd1 cd4 18.Bd4 Nc5=) 17...Nd5 (17...e5 18.Bf5 ed4 19.ed4=) 18.Bb2 (18.Rfd1 cd4 19.Be7 Ne7 20.Rc8 Rc8 21.Nd4 Nd5=) 18...cd4+= 19.Bd4 Bf6 20.Ne4 (20.Nc4 Bd4 21.Nd4 Nc5+=) 20...Bd4+= 21.Nd4 Ne5 (21...f5 22.Nd2 Nc5 23.N2b3+=) 22.Rc8 (22.Be2 Nf4 23.ef4 Rd4+=) 22...Rc8 23.Be2 Nc3 (23...f5 24.Ng3 Nc3 25.Qa1+=) 24.Nc3= Rc3 25.Qb2 Qc7 26.Nc6 Rc5 27.Ne5 Re5 (worse is 27...Qe5 28.Qe5 Re5 29.Rc1+=) 28.Rc1 Rc5 29.Rc5 Qc5 ½–½. Mueller,Henri (1825) – Nemec,Zdenek (1885), b2–b4.com, 2005.

11.Rc1 Rfd8 12.cd5 Bd5 13.Bd3 Rac8 14.a4 (14.Nc4 cd4 15.Nd4 Nc5-/+) 14...Qb8 (14...Qd6 15.Nc4 Qc7 16.Qe2=) 15.Qe2 (15.Nc4 Ne4=) 15...cd4 (15...Qd6 16.Nc4 Qc7 17.e4+=) 16.Rc8 Rc8 (16...Qc8 17.e4 Bb7 18.Rc1=) 17.Nd4 (17.e4 Bb7 18.Bd4 e5=) 17...Ne5 (17...Nc5 18.e4 Bb7 19.Rd1=) 18.Bb1 (18.Rd1 Nd3 19.Qd3 Bd6=) 18...Qd6 (18...Qb7 19.e4 Bc4 20.Nc4 Nc4 21.e5+=) 19.e4 (19.Rd1 Qb4 20.Nf5 ef5 21.Be5 Be6=) 19...Ba8 (19...Neg4 20.f4 Bb7 21.Bd3=) 20.N4b3 (20.Rd1 Qb4 21.N4b3 Bd6=) 20...Nfd7 (20...Neg4 21.f4 Qb4 22.e5 Bc5 23.Nc5 Qc5 24.Kh1=) 21.f4 (21.Rd1 Qb4=) 21...Ng6 22.f5 (22.Qg4 Nf6 23.Bf6 Bf6+/–) 22...Nge5 (22...ef5 23.ef5 Nge5 24.Re1=) 23.fe6 (23.Nd4 Nc5=) 23...Qe6 24.Nd4 (24.Qh5 Bb4=) 24...Qd6 (24...Bc5 25.Qf2 Qg4 26.Ba2+=) 25.Nf5= Qc5 (25...Qe6 26.Ne7 Qe7 27.Nf3=) 26.Bd4 Qa3 (26...Qb4 27.Ne7 Qe7 28.Ba2+=) 27.Ne7+= Qe7 28.Nf3 f6 (28...Qe6 29.Ba2 Nf3 30.gf3+=) 29.Ne5 (29.Ba2 Kh8+=) 29...Ne5 30.Qh5 (30.Ba2 Kh8+=) ½–½. Mueller,Henri (2055) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

11.Qc2 a6 12.a4 a5 13.cd5 ed5 14.dc5 Bc5 (14...bc5 15.Rfe1=) 15.Nd4 Rac8 16.N2b3 Qd6 (16...Bd6 17.Qc7 Rc7 18.Rfc1=) 17.Qf5 (17.Nf5 Qe6 18.Nc5 Nc5+=) 17...Bb4= 18.Rfd1 g6 19.Qg5 Ne4? (better 19...Bc3 20.Ba3 Bb4=) 20.Nf5+– Ng5?? (better 20...f6 21.Nd6 fg5 22.Nc8 Rf2 23.Nb6 Nb6+–) 21.Nh6 1–0. GuestDBJS – GuestBBYG, freechess.org, 2019.

11.Qc2 Rfd8 12.Rfd1 h6 (12...cd4 13.Nd4 (13.Bd4 Bd6 14.Bc3 e5 15.cd5 e4 16.Nd4 Bh2 17.Kh1 Be5 18.d6-/+) 13...Rac8 14.Rac1 Bd6 15.f4 e5 16.fe5 Ne5 17.Nf5 Bc5 18.Qa4=) 13.h3 (13.cd5 Nd5 14.e4 Nf4 15.Bf1 a6 16.a4 Qc8 17.Rac1 cd4 18.Qc8+=; 13.Rac1 cd4 14.Bd4 Rac8 15.Qb2 Qd6 16.cd5 Rc1 17.Qc1 Qd5 18.Nb3=) 13...a6 (13...cd4 14.Nd4 Rac8 15.Rac1 a5 16.cd5 Qc2 17.Rc2 Rc2 18.Nc2=) 14.a4 (14.cd5 Nd5 15.ba6 Ba6 16.Ba6 Ra6 17.e4 cd4 18.Qc7=) 14...ab5 (14...cd4 15.Nd4 ab5 16.ab5 Rdc8 17.Ra8 Ba8 18.Bd3=) 15.ab5 (15.cd5 Bd5 16.ab5 Ra1 17.Ra1 Qb7 18.Bc4=) 15...cd4 16.Bd4 (16.Nd4 Rdc8 17.Ra8 Ba8 18.Bd3=) 16...e5 17.Bb2 (17.Bc3 Bd6 18.Ra8=) 17...Bb4 (17...Bd6 18.Ra8=) 18.Qb3 (18.Ra8=) 18...Bd2 19.Nd2 Nc5 20.Qc2 d4 21.ed4 ed4 22.Bf3 d3 23.Qc3 Bf3 24.Nf3 Nce4 (better is 24...Na4!? 25.Qe5 Qc4-/+) 25.Qb4= Ra1 26.Ba1 Qf4 (better is 26...Qc5!? 27.Qc5 Nc5 (27...bc5? 28.Ne5+–) 28.Bf6 gf6=) 27.Be5+/– Qf5 28.Bc7 Rd7 29.Bb6 Nh5 30.Be3 Ng5 (better is 30...Nf4!? 31.Bf4 Qf4+–) 31.Ng5 hg5 32.b6 ½–½. Zerebecki,Dawid (1675) – Stepinski,Stanislaw (1860), Kowalewo Pomorskie Poland, 2010.

11.Bd3 a6=.

11.d4 Rfc8 12.Rc1=.

11.d4 cd4 12.ed4 (12.Nd4 e5 13.Nf5 Bb4=) 12...Rac8 (12...dc4 13.Rc1+=) 13.Rc1 Qb8 14.a3 Rfd8 15.Re1 Bd6 16.g3 Ne4 17.Ne4 de4 18.Nh4 e3 (18...e5 19.d5+=) 19.Bf3 White intends d5 (19.f3 e5=) 19...ef2 20.Kf2 e5 (20...Bf3 21.Qf3 Qc7 22.Kg2=) 21.Bb7 Qb7 22.Nf5 (22.de5 Ne5 23.Qd4 Bc5 24.Re5 Bd4 25.Bd4 Rd4–+) 22...Bf8 23.d5 f6 (23...a6 A) worse is 24.Be5 Ne5 25.Re5 ab5+= (worse is 25...Ba3 26.Qg4 g6 27.Rce1+=); B) 24.Qf3=) 24.Kf1 (24.Qg4 Nc5 25.Rcd1 Bd6=) 24...Nc5= 25.Rc2 (25.Kg1 Bd6=) 25...g6 (25...a6 26.ba6 Qa6 27.d6=) 26.Ne3= Bg7 27.Ng4 Rd6 28.Qf3 Qd7 29.Nf2 Na4 30.Qb3 Nb2 31.Qb2 f5 32.Qb3 e4 33.Nh3 Bh6 (33...Rc5 34.Kg2+=) 34.Nf2 Qc7 Exerts pressure on the backward pawn 35.Rd1 Qc5 36.Qb4 Qc7 (36...Be3 37.Qc5 Bc5 38.Rc3+=) 37.Nh3 (37.Qb3!?=) ½–½. Kuhlmann,AEJ – Nicolaes,L, Vet.88/2, 1989.

11.d4 Ne4 12.Rc1 (12.cd5 ed5 13.dc5 bc5=) 12...f5 (12...a6 13.cd5 ed5 14.dc5 bc5 15.a4=) 13.Ne5 (13.Qc2 a6 14.cd5 ed5 15.dc5 bc5=) 13...Nd2 14.Qd2 Ne5 15.de5 Rad8 16.f4 (16.Rfd1 a6 17.ba6 Ba6=) 16...dc4 (16...Rd7 17.Rfd1=) 17.Qc2 (17.Qc3 a6 18.a4 ab5 19.ab5 Bd5=) 17...Be4+= 18.Qc4 Bd5 (18...Rd2 19.Bc3 (19.Qe6? Rf7–+) 19...Bd5 20.Bd2 Bc4 21.Bc4=) 19.Qa4= g5 (19...Qb7!? 20.Bf3 Bf3 21.Rf3 Rd5=) 20.Bc4 (20.Rfd1 Rd7+=) 20...Qb7 21.Bd5 (21.Rfd1 Bc4 22.Qc4 Rd5=) 21...Rd5= 22.Qb3 (22.Rcd1 Qd7=) 22...gf4 (22...Rfd8 23.Rf2=) 23.Rf4 (23.ef4 Rfd8=) 23...Kh8 (23...Qd7 24.Bc3=) 24.Qc3 (24.Rcf1 Rg8 25.R4f2 Rg4=) 24...Rg8 Do you see the mate threat? 25.Qc2 (25.e4 Rd4 26.Re1 Bg5-/+) 25...Rd3 (25...Qd7 26.Rf2-/+) 26.Rf5 Qe4 (26...Bg5 27.Kf1 Be3–+) 27.Rf2= Qe3 28.Kh1 White threatens strongly Re2 28...Rgd8 29.Re2 (29.Rf7!? Qc1 30.Qc1 Rd1 31.Rf1 Rc1 32.Bc1+=) 29...Rd2-/+ (29...Rd2 30.Qd2 Qd2 (30...Rd2? 31.Re3 Rb2 32.Ra3+–) 31.Rd2 Rd2-/+) 0–1. Koller – Brandl,Josef (2275), corr, 1985.

11.cd5 ed5 12.dc5 bc5 13.Qc2 (13.a4 Rfc8=) 13...Rfe8 (13...Rfc8 14.Rfd1=) 14.Rfd1 (14.Rfc1 Rac8=) 14...Rac8 15.Rac1 c4 (15...Bd6 16.Bd3=) 16.Nd4 (16.Bd4 a6 17.ba6 Ba6=) 16...Bb4 (16...Bd6 17.N2f3=) 17.Ba1 (17.Bc3 Qa5+=) 17...Bd6= 18.N2f3 g6 (18...Ne4 19.Nf5 Ndf6 20.Bf6 gf6 21.Nd6 Qd6 22.Nd4+/–) 19.g3 (19.Bb2 Ne4+=) 19...Qa5 (19...Ne4!?=) 20.Bc3+= Qb6 21.Nd2 (21.a4 Ne4+=) 21...Ne5 (21...Be5 22.a4=) 22.a4 Bc5 (22...Ne4 23.a5 Qc7 24.Ne4 de4 25.a6=) 23.a5 Qc7 (23...Qd6 24.h3+=) 24.N4f3 (24.a6 Ba8+=) 24...Neg4 (24...Ba3 25.Rb1 (25.Ne5?! Bc1 26.Rc1 Re5=; 25.Be5?! Re5 26.Ra1 Bd6+/–) 25...Bd6 26.Nd4+=) 25.a6+= Ba8 26.Nd4 Qe7 27.Bg4 (27.N2f3 Ne4 28.Be1 Qf6=) 27...Ng4= 28.N2f3 f6 29.h3 Ne5 30.Kh2 (30.Ne1 Qd7+=) ½–½. Borrmann,Fritz (1700) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

11.cd5 ed5 12.Ne5=.

11.cd5 Bd5 12.dc5 Nc5 13.Be5=.

11.cd5 Nd5 12.a4 a6=.

11.Ne5 cd4 12.ed4 Bd6 13.Rc1=.

11.Ne5 Ne5 12.de5 Nd7 13.cd5 ed5 14.Bd3 c4=.

11.Ne5 Ne5 12.de5 Nd7 13.f4 Rfd8 14.cd5 ed5 15.Qc2=.

11.Ne5 Ne5 12.de5 Nd7 13.f4 f6 14.cd5+= Bd5 (better is 14...ed5!? 15.e6 Nb8=) 15.e4+/– Bb7 16.Qb3 c4 17.Qc4 (17.Bc4 fe5 18.Be6 Kh8+–) 17...Bc5+/– 18.Kh1 Kh8 (18...Rae8 19.ef6 Nf6 20.Rad1+/–) 19.Nf3+– Rae8 20.Nd4 Qc8 (20...Be4 21.Ne6 Qb7+–) 21.Ne6 Ne5 22.fe5 (22.Be5?! Qe6 23.Qe6 Re6=) 22...Qe6 23.Qe6 (23.ef6 gf6 24.Rf6 Qf6 25.Bf6 Rf6+–) 23...Re6 24.Bc4 Ree8 (24...Bc8 25.Be6 Be6 26.ef6 gf6 27.Bf6 Kg8+–) 25.ef6 gf6 (25...Rf6 26.Rf6 Be4+–) 26.Rf6 (26.Bf6?! Rf6 27.Rf6 Bd4+–) 26...Kg7 27.Rb6 (27.Rb6 Rf6 28.Rf6 Re4 29.Rb6 Kf8 30.Rb7 Rc4 31.Rd1+–) 1–0. Makowski – Czech, Poland, 1985.

11.Ne5 Ne5 12.de5 Nd7 13.f4 f6 14.Bg4 Nb8?? (14...f5 15.Bf3 dc4 16.Qe2+=) 15.Qc2 (better 15.Be6 Kh8 16.cd5+–) 15...f5+= 16.Be2 Rf7 (16...a6 17.a4+=) 17.a4 a5 (17...Nd7!?+–) 18.cd5+– Bd5 (18...ed5 19.Rad1+–) 19.Bc4 Rf8 20.Bd5 (better 20.Rad1 Qb7 21.Bd5 ed5 22.Nb1+–) 20...Qd7?? (20...ed5!? 21.Rad1 Qd7+–) 21.Rad1 (21.Ba8 Na6 22.Bc6 Qc8+–) 21...Qc7?? (better 21...ed5 22.e4 fe4 23.Ne4 Kh8+–) 22.Qc4 (22.Ba8 Qc8+–) 22...g5 (22...ed5 23.Qd5 Kh8 24.Qa8+–) 23.g3 (23.Ba8 Qc8+–) 23...h5 (23...ed5 24.Qd5 Kg7 25.Qa8+–) 24.Rc1 (24.Ba8 Qc8+–) 24...g4 (24...ed5 25.Qd5 Rf7 26.Qa8+–) 25.e4 (25.Ba8 Kg7+–) 25...h4 (25...ed5 26.Qd5 Kh7 27.Qa8+–) 26.Qd3 (26.Ba8 Qd7+–) 26...fe4 (26...Qd7 27.Nc4 ed5 28.Nb6 Qe6 29.ef5 Qb6 30.Qd5 Kh7 31.Qa8 c4 32.Kh1 Rf5 33.gh4 Qe6+–) 27.Qe4 Kg7 28.Qg2 (28.Ba8 Qa7+–) 28...Rh8 (28...ed5 29.Qd5 Qd8 30.e6 Kh6+–) 29.f5 (better 29.Ba8 Kh6+–) 29...Kf7 (29...ed5 30.f6 Kh6 31.fe7 Qe7 32.Rf6 Kg7 33.Qd5+–) 30.Kf2 (better 30.fe6 Ke8 31.Ba8+–) 30...Qb7 (30...hg3 31.Kg3 ed5 32.Qd5 Kf8 33.Qa8 Bd8+–) 31.Kg1 ½–½. Gross,Wilhelm – Merten,Rainer, Frankfurt–Nordost ch, 2019.

12.Qa4 Qb8 13.cd5 Nd5 14.dc5 Nc5 15.Qg4 Bf6 16.Bf6 Nf6 17.Qh4 Qa8 18.Qh3 Na4 19.Nd4 Nc3 20.Bc4 Ncd5 21.N2f3 Qb8 22.Ne6 (better is 22.Rfd1+=) 22...fe6-/+ 23.Qe6 Kh8 24.Ng5 Rc7 25.Qd6 Re7 26.Qb8 Rb8 27.e4? (better is 27.Rfd1!?-/+) 27...Ne4–+ 28.Ne4 Re4 29.f3 Re7 30.Rfd1 Nf6 31.Bb3 h6 32.Rd6 Rd7 33.Re6 Bd5 34.Bd5 Nd5 35.Rec6 Nb4 36.Rc7 Rbd8 (36...Rc7 37.Rc7 Na2 38.Kf2–+) 37.a3 Nd3 38.R1c6 Kg8 39.h3 Nc5 40.Kf2 Rc7 41.Rc7 Rd7 42.Rc8 Kf7 43.Ke2 (43.Kg3 Ne6 44.Rc4 Rd4 45.Rd4 Nd4–+) 43...Ke6 44.Rf8 Ke5 45.h4 Kd4 46.Rf4 Kc3 47.g4 Rd2 (47...Ne6!? 48.Re4 Nd4 49.Ke3 Nc2 50.Kf2 Na3 51.Re5–+) 48.Kf1 Kb3 49.Rf7 Rd7 (49...Ka3?! 50.Ra7 Kb4 51.Rg7 Kb5 52.Rg6–+) 50.Rf4 Ka3 51.Ke2 Ne6 52.Re4 Nd4 53.Kd3 Nb5 (53...Nb5 54.Ke3 Nd6–+) 0–1. Nemeth,Laszlo1 (1985) – Juhasz,Mark (2140), Gyongyos Matra Cup, 2004.

12.Bd3 dc4 13.Bc4 Qb8 14.Ne5=.

12.Bd3 Bd6 13.cd5+= ed5 (13...Bd5? 14.e4+–) 14.dc5 bc5 15.Bf5 (15.Qa4 Rfe8+=) 15...Rcd8 16.Bd4 (16.Qe2 Ne5+=) 16...Qb8 (16...Qb6 17.Bc3 Qb5 18.Qc2=+) 17.Ba1 (17.Bc3 Ne4+=) 17...Ne4 18.a4 Ndf6 19.Re1 (19.Nb3 g6 20.Bh3 Nd7+=) 19...Rfe8 20.Bf6 (20.Nb3 g6 21.Bh3 Nd7=) 20...Nf6 21.g3 (21.Qc2 a6=) 21...g6 (21...Qc7 22.Qc2=+) 22.Bh3 Bf8 (22...a6 23.b6=+) 23.Qc2 Qa8 (23...h6 24.Red1=) 24.Qc3 (24.Bg2 h6=) 24...Nd7 (24...Ne4 25.Qc2=+) 25.Red1 (25.Rcd1 a6=) 25...a5 (25...Bg7 26.Qa3=) 26.Ng5 (26.Bg2 Bg7 27.Qc2 Rc8=) 26...Ne5 (better is 26...Bg7 27.Qb3 c4=+) 27.Ne6?? (better is 27.f4 d4 28.ed4 cd4 29.Qb3=) 27...d4!–+ (27...fe6?! 28.Qe5 Bc8 29.Rb1=) 28.ed4 (28.Qd4 cd4) 28...cd4 29.Nd4 (29.Qc7 A) 29...fe6 30.Qe5 Bg7 31.Qc7= (31.Be6? Kh8 32.Qe2 Rd6–+); B) 29...Bd6 30.Qb6 fe6 31.Qd4 Bb8–+) 29...Bb4 30.Qa1 Rd4! 31.Qd4 Bd2 (32.Rc3 Bc3 33.Qc3 Nf3 34.Kf1 Bd5–+ (< 34...Nh2 35.Kg1 Nf3 36.Kg2–+)) 0–1. Borrmann,Fritz – Gross,Wilhelm (2425), corr SOK–97–121, 1998.

12.Bd3 Rfd8=.

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

12.Ne5 Ne5 13.de5 Ne4 14.cd5 (14.Ne4 de4 15.Qa4 a6=) 14...Nd2 15.Qd2 ed5 (15...Bd5 16.Bc4 Bc4 17.Rc4+=) 16.f4 (16.Bd3 f5+=) 16...Qd7= 17.Bd3 f5 The passed pawn on e5 quickly leads to threats 18.a4 (18.ef6 Bf6 19.Bf6 Rf6=) 18...Qe6 19.Be2 Rfd8 20.Bf3 (20.Rfd1 c4=) 20...a5 (20...a6 21.ba6 Ba6 22.Rfd1+=) 21.Rfd1= Rc7 22.Qe2 (22.Qd3 Rdd7=) 22...Rcd7 Black prepares the advance d4 (22...Kh8 23.Qd2=) 23.g4 (23.Qd3=) 23...d4 (23...fg4 24.Bg4 Qg6 25.Qg2=) 24.ed4 (better is 24.Bb7!? Rb7 25.ed4+=) 24...Bf3+= 25.Qf3 fg4 (worse is 25...cd4 26.Qc6 Qg6 27.Qg6 hg6 28.Rd3+/–) 26.f5 (26.Qd3 cd4 27.Qc4 Rd5+=) 26...gf3 (26...Qe5! 27.de5 gf3 28.Rd7 Rd7-/+) 27.fe6= Rd5 28.Kf2 cd4 29.Kf3 (29.Rc7 Bc5=) 29...Re5+= 30.Rd4 Rf8 31.Rf4 Rf4 32.Kf4 Do you see the mate threat? 32...Re6 33.Bd4 Bd6 34.Kf5 Kf7 35.Bg7 Bc5 (35...Bh2!? 36.Rh1 Rd6=) 36.Be5+= Rh6 37.Rf1 Ke7 38.Bf4 (38.Re1 Kd7+=) 38...Rf6 39.Ke4 Ke6 40.Rd1 Rf8 (40...Rg6 41.Re1=) 41.Rd3 Rg8 (41...Re8 42.Rd5+=) 42.Rh3 Rg7 43.Rh6 Kd7 44.Kd5 Rf7 45.Be5 Re7 46.h4 Rf7 47.h5 Re7 48.Rf6 Ke8 (48...Be3 49.Rc6 Bc5 50.Bd4 Bd4 51.Kd4+/–) 49.Bd6 White gets deadly initiative 49...Rg7 50.Kc6 Threatening mate... how? 50...Bd6 51.Rd6 Rg5 (better is 51...Rg4+–) 52.Kb6 Rh5 53.Ka5 The passed pawn on a4 will quickly become a dangerous weapon 53...Re5 (53...Ke7 54.Rc6+–) 54.Kb6 h5 55.a5 Kf7 56.a6 (56.a6 h4 57.Rh6+–) 1–0. Bulcourf,Carlos (2210) – Justo,Damian (2265), COOP tt Buenos Aires, 1992.

12.h3 Qb8 13.Bd3 (13.Ba3 Bd6=) 13...cd4 14.Nd4 Nc5 15.Bb1 dc4 (15...Rfd8 16.cd5 Bd5 17.Qe2=) 16.Nc4 Rfd8 17.Qe2 Bf8 (17...Bd5 18.Rfd1=) 18.Nf3 Nce4 (18...Be7 19.Be5 Qa8 20.Rfd1=) 19.Nfe5 (19.Be5 Qa8=) 19...Nd6 (19...Bd5 20.Rfd1=) 20.Ng4 (20.Rfd1 Nb5 21.Nf7 Kf7 22.Bf6 Kf6 (22...gf6?? 23.Qh5 Ke7 24.Qh7 Bg7 25.Qg7 Ke8 26.Bg6) 23.Qb2 Kf7 24.Rd8 Rd8 25.Qb5 Kg8=) 20...Ng4 21.Qg4 (21.Nd6 Qd6 22.Qg4 Rc1 23.Rc1 Qd5=) 21...Rc4 (21...Nb5 22.Be5 Qa8 23.a4=) 22.Rc4 Nc4 23.Qc4 Qd6 24.Qc2 (24.Qh4 f5=) 24...f5 25.Qb3 Qd5 (25...Be7 26.Rc1=) ½–½. Stevanovich,Steve – Winslow, KBU mem, OH, 1981.

12.h3 Rfd8 13.Bd3=.

11.a4 dc4 12.Nc4 Bd5 13.Rc1=.

11.a4 Rc7 12.Bd3 (12.a5 dc4 13.Bc4 ba5 14.Ra5 Bd5=) 12...Qc8 (12...cd4 13.Bd4 Nc5 14.Be2=) 13.Rc1 (13.Ba3 dc4 14.Nc4 Qa8=) 13...Bd6 (13...cd4 14.Bd4 Rd8 15.cd5 Rc1 16.Qc1=) 14.Rc2 (14.Qe2 cd4 15.ed4 Rd8=) 14...cd4 15.ed4 Re8 16.Ne5 Qb8 (16...Rd8 17.a5=) 17.Qe2 Rec8 18.Rfc1 Nf8 (18...Rd8 19.f4+=) 19.Qe3= N6d7 (19...dc4 20.Ndc4 (worse is 20.Nec4 Bh2 21.Kh1 Nd5-/+) 20...Nd5 21.Qg3+=) 20.Nb3 (20.Qf4 Nf6+=) 20...dc4 21.Bc4 (21.Nc4 Bd5+=) 21...Ng6 (21...Bd5 22.Nd2=) 22.Nd7 (22.Nf7 Rc4 23.Nh6 gh6 24.Qe6 (worse is 24.Rc4 Bh2 25.Kh1 Re8=) 24...Kf8 25.Rc4 Rc4 26.Rc4 Bh2 27.Kf1 Bg2 28.Ke1+=) 22...Rd7= 23.g3 (23.h3 Bf4 24.Qe2 Bc1 25.Bc1 Nh4–+) 23...Rcd8 (23...Rdc7 24.Rc3+=) 24.Bf1 Nh4 Black gets in control 25.Nd2 (25.Be2 Nf5 26.Qd3 Bd5+=) 25...Nf5 26.Qg5 Be7 27.Qh5 Nd4 28.Bd4 Rd4 29.Nc4 (29.Rc7 R8d5 (29...Rd2?! 30.Re7 g6 31.Qg5-/+) 30.Qf3 Kf8–+ (30...Rd2 31.Re7 f6 32.Rcc7+–)) 29...Bc5 (29...Be4 30.Rc3–+) 30.Ra1 (30.Bg2!?-/+) 30...R4d5 (30...Be4 31.Rc3–+) 31.Qe2 Rf5 32.Qe1 Rd7 (32...Rfd5 33.Qe2 a6 34.ba6 Ba6 35.Bg2-/+) 33.Rd1 Qd8 (33...Bb4 34.Qe2 Bf3 35.Rd7 Be2 36.Be2–+) 34.Rd7 Qd7 35.Rd2 (35.Bg2 Qd3 36.Rd2 Bf2 37.Rf2 Bg2+/–) 35...Rd5 36.Bg2 Rd2 37.Qd2 Qd2 38.Nd2 Bg2 39.Kg2 Kf8 40.f4 Ke7 41.Kf3 f6 (41...h6 42.h3-/+) 42.Nc4 Kd7 43.g4 (43.h3 g5+=) 43...g6 44.g5 Bd4 (44...fg5 45.fg5 Bd6 46.h3+=) 45.Ke4 Bc3 46.gf6 (46.Kd3 Ba1+=) 46...Bf6 47.Ne5 (47.h3 h6+=) 47...Be5-/+ 48.fe5 (48.Ke5 Ke7-/+) 48...Ke7 49.Kf4 Kf7 (49...h6 50.Ke4-/+) 50.Kg4 (50.Ke4 Ke8-/+) 50...Kg7 (50...Ke8 51.Kf4-/+) 51.h4 h5 (51...Kf7 52.Kf4-/+) 52.Kf4 (better is 52.Kg5 Kf7 53.Kh6=) 52...Kh6 53.Kf3 (better is 53.a5!? ba5 54.Ke3–+) 53...g5–+ 54.Kg3 gh4 55.Kh4 (55.Kf4 Kg6–+) 55...Kg6 (55...Kg6 56.Kg3 Kf5–+) 0–1. Wilk,E – Primik,U, Augustow Poland, 1994.

11.a4 cd4 12.Bd4 dc4 13.Nc4 Bd5 14.Nfd2 Ne4 15.Ne4 Bc4 16.Rc1 Bd5 17.Bf3 Rc1 18.Qc1 Qa8 19.Qc7 Rd8 20.Nd2 Bf6 21.Rc1 e5 22.Ba1 h6 23.Bd5 Qd5 24.Bc3 Nc5 25.Qa7 Nb3 26.Nb3 Qb3 27.Be1 Rd1 ½–½. Seifert,Henryk – Strzelecki,Jerzy, Mistrzostwa Polski Osob Niepelnosprawnych, 2008.

11.a4 cd4+= 12.Nd4 Nc5 13.Rc1 Qc7+=.

11.a4 cd4 12.Nd4 Nc5 13.cd5 Nd5 (13...Qd5 14.Bf3 Qd7 15.Bb7 Qb7 16.Nc6+=) 14.Nc4 White prepares the advance a5 14...Bf6 (14...Qc7 15.a5+=) 15.a5= Ne4 (15...Qc7 16.Qc2=) 16.Qc2 Nd6 17.Qb3 (17.a6!? Ba8 18.Rfd1=) 17...Nc4+= 18.Bc4 ba5 19.Rfd1 (19.Rfc1 Nb4+=) 19...Qb6-/+ 20.Qa4 a6 (20...Rfd8!?+=) 21.ba6= Ba6 22.Ba6 (22.Bd5 Qb2 23.Ra2 Qc3 24.Ne6 fe6 25.Be6 Kh8 26.Bc8 Qc8 27.Qa5 Bb7=) 22...Qa6 23.Qa5 Qa5 24.Ra5 ½–½. Raue,Thorsten (1835) – Kaiser,Guenter1 (1685), Muensterland Verbandsklasse–B, 2007.

11.a4 cd4+= 12.Nd4 Nc5 13.N2f3 (13.Rc1 Qc7+=) 13...Nce4 (better is 13...Qd6!?+=) 14.Ne5+= Bd6 15.Ndc6 Qc7 16.cd5 (16.f4=) 16...Bc6 (16...Nd5 17.Bf3 Ndc3+= (worse is 17...Bc6 18.Nc6 f5 19.Be4 fe4 20.Qg4 Bh2 21.Kh1+/–)) 17.Nc6+= Bh2 18.Kh1 ed5 19.Bd3 (19.a5 ba5 20.Ra5 Ra8+=) 19...Rfe8 (19...Bd6 20.Be4 Ne4 21.Qd5=) 20.Na7 (20.f4 Bf4 21.ef4 Ng3 22.Kg1 Nf1 23.Qf1 Ne4+/–) 20...Be5 (20...Qa7 21.Kh2 Nc3=) 21.Rc1 (21.Be5!? Qa7 22.Bd4+=) 21...Nc5 (21...Qa7 22.Rc8 Bb2 23.Qc2-/+) 22.Nc8+= Bb2 23.Rc2 Be5 24.f4 Qc8 25.fe5 Re5 26.Qf3 Qe6 (26...Qe8 27.Rc3+=) 27.Bf5= Qe7 28.Qf4 (28.Rc3 Ne8=) 28...Nh5+= 29.Qh2 g6 30.a5?? (better is 30.Bg4+=) 30...Re3–+ 31.Qb8 Kg7 32.Qb6 (32.Kg1 A) 32...gf5 33.Qb6 Nb3 34.Qc7–+ (34.Rf5 Re1 35.Rf1 Ng3 36.Re1 Qe1 37.Kh2 Nf1 38.Kh1 Ne3 39.Kh2 h5–+); B) 32...Ng3 33.Qb6 B1) 33...gf5 34.Qc5 (worse is 34.Rc5 Qh4 35.Qf6 Kf6 36.Rc2 Re2 37.Rf5 Kf5 38.Re2 Ne2 39.Kf1 Nf4 40.g4 Kg4 41.a6 Qh2 42.a7 Kf3 43.a8Q Qf2) 34...Qe4 35.Rd1 Re1 36.Re1 Qe1 37.Kh2 Nf1 38.Kg1 Ne3 39.Kh2-/+; B2) 33...d4–+) 32...Ng3 33.Kg1 Qh4 (33...d4 34.Rd1 Re5–+) 34.Qc5= Nf1 35.Bh3?? (better is 35.Rc1 gf5 36.Rf1=) 35...Qf4–+ 36.Rc1? (36.Qc7 Re5 37.Qc3–+) 36...Ng3 (36...Nd2 37.Qc8 Re2–+) 37.Qc7 (37.Bg4 d4 38.Rd1 Qg4 39.Qd4 Qd4 40.Rd4 Ne2 41.Kf2 Nd4 42.Ke3 Nb5 43.Ke4–+) 37...Ne2 38.Kh1 Rh3! 39.gh3 Qf3 (39...Qc1?? 40.Qc1 Nc1 41.a6+–) 40.Kh2 Qf2 41.Kh1 Ng3 42.Qg3 Qg3 (42...Qg3 43.Rb1 Qh3 44.Kg1 Qe3 45.Kh2 Qe5 46.Kg1 Qg3 47.Kh1 Qg4–+) 0–1. Morriss,Pete (1990) – Timson,Paul F (2105), British Senior, 2013.

11.a4 Bd6 12.a5 Bb8 (12...ba5 13.Nb3=) 13.ab6= ab6 14.Ne5 Ne5 (14...cd4 15.ed4 Ne5 16.de5=) 15.de5+= Nd7 (15...Ne4 16.f4+=) 16.f4+/- f6 (16...Qe7 17.Bf3+/-) 17.Bg4 (better 17.cd5!? Bd5 18.e4+/-) 17...Qe7+= 18.Nf3 (18.cd5 Bd5 19.e4 Bb7+=) 18...f5 19.Bh3 dc4 20.Nd2 g5 21.g3 g4 (21...gf4 22.ef4 c3 23.Bc3=) 22.Bg2 Bg2 23.Kg2 c3 24.Bc3 c4 25.Qe2 Nc5 (25...Qc5 26.e4 Qb5 27.h3+=) 26.h3 (26.Nc4 Qd7 27.Nd2 Qd3 28.Qd3 Nd3+/-) 26...Qb7 27.Kh2 Ne4 (27...gh3 28.Kh3 Rf7 29.Bd4+=) 28.Rac1 (28.Ne4 Qe4 29.Rad1 gh3 30.Kh3 Qb7+/-) 28...Nc3? (28...Nd2 29.Bd2 gh3+=) 29.Rc3+/- Qd5 (29...gh3 30.Kh3 Rc5 31.Nc4+/-) 30.hg4+- Rc5? (better 30...Qb5 31.Rfc1 Qa6 32.Nc4 Rc6+-) 31.gf5 (31.gf5 ef5 32.e4 fe4 33.Ne4 Rb5 34.Rc4+-) 1-0. Lance5500 (2750) - Challenger_Spy (2260), lichess.org, 2017.

11.a4 Ne4 12.a5 Nd2 13.Nd2 cd4 14.Bd4 ba5 15.cd5 Bd5 16.e4=.

11.a4 Ne4 12.a5 Nd2 13.Nd2 Bf6 14.ab6 ab6 15.Ra7 Ba8 16.Qa1 cd4 17.ed4 (17.Bd4 e5 18.Bb2 Rc7=) 17...Rc7 18.Rc1 (18.Bd3 Re8=) 18...dc4 (18...Ra7 19.Qa7 Bg5 20.Bc3 dc4 21.Bc4=+) 19.Nc4= Bd5 (19...Bg5 20.Rc7 Qc7 21.Ba3=) 20.Rc7 Qc7 21.Ne5 Qb7 22.Nc6 (22.Qa6 Be5 23.Qb7 Bh2 24.Kh2 Bb7+=) 22...Be4 (22...Ra8!? 23.Qb1 Nb8=) 23.f3 Ra8 24.Qa8?? (better 24.fe4 Ra1 25.Ra1+= (worse 25.Ba1 Qa8=+)) 24...Qa8–+ 25.fe4 (25.Ra1 Bc6 26.Ra8 Ba8 27.Bd3–+) 25...g6 (better 25...Qa2 26.Kf2 Qb2–+) 26.e5?? (26.Ra1 Qe8=) 26...Bg5?? (better 26...Qa2 27.ef6 Nf6–+) 27.Ra1= Qe8 28.Bf3 Kg7 29.d5 ed5 30.Bd5 Be3 (30...Kh6 31.Bd4=) 31.Kh1+= Kh6 32.Rf1 (32.Ra3!? Bg5 33.Bd4+=) 32...Qa8= 33.Bf7 (33.Ra1!? Qf8 34.Ra4=) 33...Qa4-/+ 34.Bc1? (34.e6 Qb5 35.Rd1=+) 34...Bc1–+ 35.Rc1 (35.e6 Qc4 36.Re1 Nf6–+) 35…Qf4 (35...Qf4 36.Re1 Qf2–+; 35...Qb5?! 36.e6 Nf6 37.h3-/+) 0–1. tsodikovich (1765) – jraul (1805), gameknot.com, 2016.

11.a4 Ne4 12.a5 Nd2 13.Nd2 Bf6 14.ab6 ab6 15.Ra7 Qc7 16.dc5 Nc5 (16...bc5 17.Bf6 Nf6 18.Qc2=) 17.Bf6+= gf6 18.Qa1 Ra8 (18...Qb8 19.Qa3+=) 19.Ra8+/- Ra8 20.Qf6 Qd8 21.Qf4 Kg7 22.cd5 Qd5 23.Nf3 Qf5 24.Qg3 (24.Qf5 ef5 25.Nd4 Kf6+/-) 24...Qg6 (24...Kh8 25.Qc7+-) 25.Qc7 Bd5 (25...Ra2 26.Bd1+-) 26.Qb6+- Ra2 (26...Nb3 27.Ne1+-) 27.Qc5 Re2 28.Qd4 f6 29.Nh4 Qe4 30.Qe4 Be4 31.f3 Bd3 32.b6 Rb2 33.Rd1 Ba6 34.Rd6 Kf7 35.Rc6 Rb4 (35...Ke7 36.Rc7 Kd6 37.Rh7 Rb1 38.Kf2 Rb2 39.Kg3 Rb6 40.Rf7+-) 36.g4 f5 37.Kf2 h5 38.Nf5! ef5 39.gh5 Kg7 40.h6 Kh7 41.Kg3 Bd3 42.Rd6 Bf1 43.Rf6 Ba6 44.Rd6 Bf1 45.h3 Ba6 46.Rc6 Bf1 47.Rd6 Ba6 48.h4 Be2 49.h5 Ba6 50.Rf6 Be2 51.Rd6 Ba6 52.Re6 Be2 (52...Bc4 53.Rg6+-) 53.Rf6 (53.e4!? Bd3 54.ef5 Bf5+-) 53...Bd3 54.Kh3 Be2 55.Kg3 Bd3 56.Re6 Bc4?? (56...Be2 57.e4 fe4 58.Re4 Rb2+-) 57.Rg6+- Be2 58.Re6 Bd3?? (58...Bc4 59.Rc6 Bb5+-) 59.Kf2 (59.Kg2 Rb2 60.Kh3 Rb4+-) 59...Bc4 (59...Rb2!? 60.Kg1 Be2+/-) 60.Rd6+- Bb5 61.f4 Rb2 62.Kg3 Ba6 63.Re6 (63.Kh4 Rg2+-) 63...Bc4+/- 64.Rd6 Ba6 65.Kh3 Rb1 66.Kh4 Rg1 67.Rd7 (67.Rg6!? Rg6 68.hg6 Kh6 69.g7 Kg7 70.Kg5+/-) 67...Kh6+/- 68.Rd6 Kh7 69.Rd7 Rg7?? (69...Kh6 70.Rf7 Rh1 71.Kg3 Bd3= (worse 71...Rh5 72.b7 Bb7 73.Rb7+/-)) 70.Rg7+- Kg7 71.Kg5 Bc8 72.h6 Kh7 73.Kh5 (better 73.b7 Bb7 74.Kf5 Kh6 75.e4 Bc8 76.Kf6=) 73...Bb7 74.Kg5 Be4 (74...Bc8 75.Kf6 Kh6 76.b7 Bb7 77.Kf5+/-) 75.Kh5 Bb7 76.Kg5 Be4 77.b7 (77.Kf6 Kh6 78.b7 Bb7 79.Kf5 Kg7+=) 77...Bb7+/- 78.Kf5 Kh6 79.e4 (79.Kf6!?+/-) 79...Kg7 80.e5 Kf7 81.e6 Ke7 82.Ke5 Ba6 83.f5 Bf1 (better 83...Bc4!?=) 84.f6+/- Ke8? (84...Kf8 85.Kd5 Bh3+/-) 85.Kd6+= Bh3 (85...Kf8 86.Kd5+-) 86.f7 (86.Kd5 Kf8 87.e7 Kf7 88.Kd6=) 86...Kf8= 87.Kd7 Bg4 88.Kd6 Bh3 89.e7 Kf7 90.e8Q Ke8 ½-½. onur604 (2320) - Fibin (2295), Casual Rapid game, lichess.org, 2021.

11.a4 Ne4 12.a5 Nd2 13.Nd2 Bf6 14.ab6 ab6 15.Ra7 Rc7 16.Bf3=.

11.Qa4 cd4 12.ed4 dc4 13.Nc4 (13.Bc4 Rc7=) 13...Rc7 (13...Nd5 A) 14.Qa7? Nf4 15.Bd1 Bf3 (15...Rc4?! 16.Qb7 Nd3 17.Rb1=) 16.Bf3 Rc4–+; B) 14.Nce5=+) 14.Nce5= Re8 (14...Nd5!?=) 15.Nf7+= Kf7 16.Ng5 Kg8 17.Ne6 Qb8 18.Nc7 Qc7 19.Rac1 (worse 19.Qa7 Ra8 20.Rac1 Nc5 (worse 20...Ra7 21.Rc7 Bd6 22.Rc3+–) 21.Qa8 Ba8 22.dc5 Bc5=+) 19...Qb8 20.Rfe1 Bd6 21.Bc4 Kh8 22.Re8 Ne8 23.g3 Ndf6 24.Bf1 (24.Re1 Qa8+=) 24...Nc7 25.Bg2 Bg2 26.Kg2 Qe8 27.Qa7 Qb5 28.Ba1 Qd5 29.Kg1 b5 (29...Nce8 30.Rc8 Qe6 31.Qa8+=) 30.Rc7+– Bc7 31.Qc7 Qa2 32.Qb8 (32.Qc8!? Ng8 33.Qc1+=) 32...Ng8= 33.Bc3 Qb1 34.Kg2 Qe4 35.Kh3 Qe6 36.Kh4 Qh6 37.Kg4 Qe6 38.Kh4 Qc4 39.Ba5 Qd4 40.Kh3 Qf2 (40...Qd7 41.Kg2=) 41.Qb5= Qf3 42.Bc7 h5 43.Qg5 Nh6 44.Bf4 Kh7 45.Kh4 Qe2 46.h3 (46.Qh5?? g5 47.Kg5 Qe7) 46...Qc4 47.Qe5 (worse 47.Kh5 Qe4 48.Kh4 Nf5 49.Kg4 g6=+) 47...Nf7 48.Qh5 Kg8 49.Qg6 Qd4 50.Qg4 Qd5 (better 50...Qe4!? 51.Bd2 Qh7 52.Qh5 Qe4 53.Qg4 Qh7 54.Qh5 Qe4 55.Qg4=) 51.Qc8+– Qd8 (51...Kh7 52.Qc2 Kg8 53.Qd2+–) 52.Qd8 Nd8 53.Kg5 Ne6 54.Kf5 Kf7 55.h4 Ke7 (55...g6!? 56.Ke5 Nc5+–) 56.h5 Kf7 57.g4 Ke7 (57...Nf8 58.Ke4+–) 58.Be5 Kf7 59.g5 Nf8 60.h6 (better 60.g6!? Kg8+–) 60...gh6 61.gh6 Kg8 62.Bd6 Nd7 (62...Kf7 63.Ba3+–) 63.Kg6+– Nb6?? (better 63...Kh8+–) 64.h7 Kh8 65.Be5 1–0. onur604 (2320) – jugadonumero1 (2225), lichess.org, 2020.

11.Qa4 cd4 12.ed4 Ne4 13.Rac1 (13.Ne4 de4 14.Ne1 a6=) 13...Bg5 14.Qc2 (14.Ng5 Nd2 15.Qc2 Qg5=) 14...Bf4+= 15.g3 (15.Ba3 Re8 16.Bb4 e5+=) 15...Bh6 (15...Bd2 16.Nd2 Nd2 17.Qd2 dc4 18.Bc4+=) 16.a4 (16.Qd3 Re8+=) 16...Nd6-/+ 17.Rcd1 (17.Ba3 Nc4 18.Bc4 dc4 (18...Rc4?! 19.Nc4 Bc1 20.Bf8 dc4 21.Rc1 Bf3 22.Bd6=) 19.Bf8 Nf8–+ (19...Kf8?! 20.Qc3+=)) 17...dc4 (17...Bd2 18.Nd2 Nc4 19.Bc3-/+) 18.Ba3 Nf6 19.Ne5 (19.Bd6 Qd6 20.Nc4 Qd5–+) 19...Bd2–+ 20.Qd2 c3 21.Qc1 (21.Qc2 Re8–+) 21...Re8 22.Qc2 (22.Bd6 Qd6 23.Rfe1 Qb4–+) 22...Nf5 23.d5 Nd5 24.Rfe1 Qf6 25.Ng4 (25.Bf3 Red8–+) 25...Qg5 (25...Qg6 26.Ne5 Nd4 27.Qg6 Ne2 28.Re2 hg6 29.h4–+) 26.h4 Qg6 (26...Qg6 27.Ne5 Nd4 28.Qg6 Ne2 (worse is 28...hg6 29.Rd4 Nf6 30.Rc1+–) 29.Re2 hg6–+) 0–1. DEFFM – Guestxxx, freechess.org, 2018.

11.Qa4 cd4 12.ed4 Nh5 13.Qa7 Nf4 14.Bd1+=.

11.Qa4 cd4 12.Bd4 Nc5 13.Bc5 Rc5= (worse is 13...bc5 14.Qa7 Rb8 15.Rfb1+/–).

11.Qb3 dc4 12.Bc4 cd4 13.Bd4 Nc5 14.Qd1 Nfe4 15.Qe2 Bf6 16.Rfd1 (better is 16.Ne4!? Be4 17.Rfd1=) 16...Bd4-/+ 17.Ne4 Ba1 (17...Be4?! 18.ed4 Na4 19.Qe4 Rc4 20.Rac1=) 18.Rd8 Rfd8 19.Ned2 Ne4 20.Ne4? (20.h3 Nc3 21.Qf1 Bf3 22.Nf3 Rd1–+) 20...Be4 (better is 20...Rc4 21.Ng3 Rc1 22.Nf1 Rdd1–+) 21.Nd2-/+ Bd5 22.h3 Bb7 23.Nb3 Be5 24.f4 Bf6 25.a4 Bc3 26.Kh2 Be4 27.Kg3 Rd7 28.Kh4 Rdc7 29.Bd3 Bd3 (better is 29...Bf6!? 30.Kg3 Bd3 31.Qd3 Rc3–+) 30.Qd3-/+ Bf6 31.Kg4 Rc3 32.Qb1?? (32.Qd7 Rd8 33.Qa7 Re3 34.Qb6 Rb3 35.h4 h5 36.Kh5–+) 32...Re3 33.Nd2 (33.Nd4 h5! 34.Kh5–+) 33...h5! 34.Kh5 (34.Kh5 Rg3) 34...Rg3 35.Ne4 (35.f5 g6 36.fg6 Rc5 37.Qf5 Rf5 38.Kh6 Rg6) 35...g6 (35...g6 36.Kh6 Bg7) 0–1. Spiegel,Matthias – Zabka,Helge, Ueckermuende op 6th, 2007.

11.Qb3 dc4 12.Bc4 Bd5 13.Ne5 (13.Rfd1 Rc7=) 13...Ne5 (13...cd4 14.Bd5 Ne5= (worse is 14...ed5 15.Nc6 Nc5 16.Qa3 Rc6 17.bc6+=)) 14.de5+= Bc4 15.Nc4 (worse is 15.Qc4 Qd2 16.ef6 Qb2 17.fe7 Rfe8+=) 15...Nd5 16.a3 Qc7 17.g3 (17.e4 Nf4+=) 17...Qb7 18.e4 Nc7 19.Nd6 Bd6 20.ed6 Ne8 21.e5 Qd7 22.a4 (22.Qc4 f6+=) 22...g6 (22...f6 23.Rad1=) 23.Rfe1 Ng7 24.a5 (24.Qc4 Rfd8+/–) 24...c4+= 25.Qc3 (25.Qb4 Rc5+=) 25...Qb5= 26.ab6 ab6 27.Ra7 Rfd8 28.Qf3 Nf5 29.Bc3 Qc5?? (better is 29...Rd7 30.Ra8 Ra8 31.Qa8 Kg7=) 30.g4+– Ng7?? (30...b5 31.Rb7 Nh6+–) 31.Qf7 Kh8 32.Qg7 1–0. GuestRKXG – PaulFang, freechess.org, 2018.

11.Qb3 cd4 12.ed4 dc4 13.Nc4 Nd5 14.Rfc1 Nf4 15.Bf1 Bd5 16.a4 Bg5 17.Ng5 Qg5 18.Ne3?? (better is 18.Qg3 Qh6 19.Qe3=) 18…Bb3 (18...Bb3 19.g3 Nf6–+) 0–1. Toll,Anatoly – Mussanti,Diego, Dos Hermanas Internet qual–D, 2009.

11.Qb3 cd4 12.ed4 dc4 13.Nc4 Nd5 14.Nfe5 Ne5 15.Ne5 Bf6 16.Rfc1 Be5 (better is 16...Bg5 17.Rc8 Qc8=) 17.Rc8 (17.de5 Nf4 18.Bf1 Qg5=) 17...Qc8?? (better is 17...Bh2 18.Kh1 Bc8 19.Kh2 Qh4 20.Kg1 Bb7-/+) 18.Rc1?? (18.de5 Rd8+=) 18...Qd8 (better is 18...Bc7–+) 19.de5= Qg5 20.Bf3 Ba8 21.Qa4 (21.Rd1!?+=) 21...Nf4+= 22.Bc6?? (better is 22.h4 Qh4 23.Rc4+=) 22...Bc6–+ 23.bc6 (23.g3 Ne2 24.Kf1 Bb5 25.Qb5 Nc1 26.Qc4–+) 23...Qg2 0–1. GuestRKXG – PaulFang, freechess.org, 2018.

11.Qb3 Ne4 12.Ne4 de4 13.Nd2 cd4N 14.ed4 f5 (14...Nf6 15.Rad1=) 15.Rac1 Rf6 16.d5 (better 16.Ba3!?+=) 16...Nc5=+ 17.Qc2 Rh6 18.de6 Qc7 19.h3 Ne6 20.Qc3 (better 20.c5 Bc5 21.Bc4-/+) 20...Bf6-+ 21.Qc2 Bb2 22.Qb2 Nc5?? (better 22...Nf4!? 23.Bd1 Rg6-+) 23.Qd4 (better 23.Nb3=+) 23...Rd8-+ 24.Qe3 (better 24.Qb2 e3! 25.Nf3-+) 24...f4 25.Qc3 f3! 26.gf3?? (26.Nf3 ef3 27.Bf3-+) 26...Rh3 27.fe4 ½-½. AlbertOOO44444 - profedunca (2525), Casual Bullet game, lichess.org, 2020.

11.Rc1 a5=.

11.Rc1 dc4 12.Nc4 Bd5=.

11.Rc1 Qc7 12.h3 h6 13.a4 (13.Qa4 Qb8=) 13...Bd6 14.cd5 Nd5 (14...ed5 15.Nh4=) 15.Nc4 Be7 16.Re1 Qb8 (16...N5f6 17.dc5 Bc5 18.Qc2=) 17.Nce5 (17.a5 ba5 18.Na5 Rfd8=) 17...Ne5 18.Ne5 Rfd8? (18...Nf6 19.Bd3=) 19.Qb3?? (better is 19.Bh5 Rf8 20.dc5 bc5 21.Nd7+–) 19...Bf6 (19...Bd6 20.Nf3=) 20.Ng4 cd4 21.Nf6 Nf6 22.Bd4 Ne8 (22...e5 23.Bb2=) 23.Qb2 Qa8 (23...Qd6 24.f3+=) 24.f3+/– f6 25.e4 e5 (25...Nd6 26.e5 Nf5 27.Bc3 fe5 28.Be5 Rc1 29.Rc1+/–) 26.Be3+– Qb8 27.Qb3 Kh8 28.Red1 (28.a5 ba5 29.Qa3 Nc7 30.Qa5 Ne6 31.Ba7 Qa8+–) 28...Rd1 (28...Nd6 29.Rc8 Bc8 30.a5 ba5 31.Qc3+/–) 29.Rd1 (29.Bd1?! Rc1 30.Bc1 Qc8+=) 29...Qc7 (29...Rd8 30.Qf7 Rd1 31.Bd1+–) 30.Qe6+– Rd8 31.Rd8 (31.Rc1!? Qd6 32.Qd6 Nd6 33.Rc7+–) 31...Qd8+/– 32.a5 Nd6 33.ab6 ab6 34.Qa2 Qc7 35.Bf1 Bc8 (35...g5+=) 36.Qf2 (better is 36.Qa8!?+/–) 36...Bd7 37.Bb6 Qc3 38.Qa2 (38.Qe3 Qa1=) 38...Bb5 39.Bb5 Nb5 40.Kh2 Qc1 41.Qf2 Kh7 42.Be3 Qc4 43.h4 h5 44.Qd2 Nd4 45.Bd4 ed4 46.Kg1 (46.Qa5 Kg6=) 46...d3 (46...Qc3 47.Qd1+=) 47.Kf2+= Qd4 48.Kf1 Kh8 49.Qf2 (49.g3!?+=) 49...Qc3-/+ 50.Qe1 Qc2 (better is 50...d2 51.Qd1 Qd3 52.Kf2 Kg8-/+) 51.Qa1?? (better is 51.Qa5+=) 51...Qe2–+ 52.Kg1 d2 53.Qa8 Kh7 54.Qe8 Qe1 (54...Qe1 55.Kh2 Qh4 56.Kg1 d1Q) 0–1. Bouvier,Clement (1770) – Dominguez,Alain (1785), 8e Tournoi d'Automne – Tournoi B, 2009.

11.Rc1 Rc7 12.a4 Qa8 13.a5 ba5 14.Bc3 cd4 15.Ba5 Rcc8 16.ed4 dc4 17.Rc4 Rc4 18.Bc4 Ne4 19.Qb3 Nd2 20.Bd2 Bf6 21.Be6?? (better is 21.Be2=) 21...fe6–+ 22.Qe6 Rf7 23.Rc1 Bd5 24.Qd6 (24.Qa6 Nb6 25.Rc3 Rd7–+) 24...Nb6 (better is 24...Bf3!? 25.gf3 Qf3 26.Qe6–+) 25.Ne5 Be5 26.de5 Rd7 27.Qb4 Bg2 28.Qg4 Rd2 29.Rc7 (29.Qg2 Qe8 30.Qg5–+) 29...Qf8 30.Qe6 Kh8 31.Rf7 Qa8 32.Qg4 (32.f3 Qg8 33.Re7 Qe6 34.Re6 h5–+) 32...g6 33.h4 (33.f3 Qd5 34.Rf8 Kg7–+) 33...Bh3! 34.Qg5 (34.Qh3 Rd1 Decoy) 34...Rd1 (34...Rd1 35.Kh2 Qh1 36.Kg3 Qg2 37.Kf4 Nd5) 0–1. Bouvier,Clement (1725) – Claisse,Patrick (1915), Montigny le Bretonneux Noel op, 2008.

11.Rc1 cd4 12.ed4 dc4 (12...a5 13.Ne5+= (13.Bd3 dc4 14.Nc4 Nd5 15.Nce5 Ne5 16.de5 Nf4 17.Bc4+=; 13.ba6 Ba6 14.Ne5 dc4 15.Ndc4 Bb7 16.Bf3 Bf3 17.Qf3=) 13...dc4 14.Ndc4 Nd5 15.Bf3 N7f6 16.Qa4 Rc7 17.Nc6=) 13.Nc4 (13.Bc4 Bd6 14.Ne5 Bb4 15.Ndf3 Bd5 16.Bd5 Ne5 17.de5=) 13...Nd5 (13...a5 14.Nce5 Nd5 15.Nc6 Qe8 16.Bd3 Nb4 17.Nb4=) 14.g3 (14.Nce5 Bd6= (14...Rc1 15.Qc1 Bd6 16.Ba3 N7f6 17.Re1=) 15.Rc8 Qc8 16.Qd2 N7f6 17.Rc1=) 14...Rc7 (14...a6 15.Nce5 Rc1 16.Qc1 ab5 17.Bb5+=) 15.Nfd2 (15.Qa4 Qa8+= 16.Ba3 Rfc8 17.Nfe5=) 15...f5 (better is 15...a6!?-/+ 16.ba6 Ba6 17.Qb3+=) 16.Bf3 (16.Qa4 Qa8 17.Ba3=) 16...Qb8 (16...a5 17.Re1=) 17.Qe2 Rf6 18.Ne5 Ne5 19.de5 Rf8 20.Nb3 Rfc8 21.Rc6?? (better is 21.Rc7 Nc7 22.Bb7 Qb7 23.Rd1+=) 21...Bc6–+ 22.bc6 Rc6 23.Nd4 Rc5 24.Ne6 Rc2 25.Qb5 (25.Qd3 Rb2 26.Qd5 Kh8+=) 25...Nb4 (better is 25...Nc7 26.Nc7 Qc7 27.Bd5 Kh8–+) 26.Ba3= a5 27.Qd7 Re8 (27...Qe5 A) 28.Qe7? R2c7 (28...Ra2?? 29.Bb4 Qf6 30.Qf6 gf6 31.Bd5+–; 28...Na2?? 29.Bd5 Kh8 30.Qd7+–) 29.Qc7 Rc7 30.Nc7 Qc7–+; B) 28.Bb7 Rb8 29.Qe7+=) 28.Bb4 ab4 29.Bc6 Rc6 30.Qc6 Qc8 31.Qd5 Kh8 32.Rd1 h6 33.Kg2 Bc5 34.Nf4 g5 35.Nh5 f4 36.Qf7 f3 (36...Re7 37.Qg6 Qa8 38.Kg1 fg3 39.Qh6 Kg8 40.Qg5 Kh8 41.Ng3 Qf8+–) 37.Kh1 Re7 38.Qg6 (38.Qf3?! b5+–) 38...Qf8 (38...Qg8 39.Qh6 Rh7 40.Qf6 Rg7 41.Rd8 Kh7 42.Rg8 Rg8 43.Qf7 Kh6 44.Nf6 g4 45.Qh7 Kg5 46.Qh5) 39.Nf6 Bf2 40.Rd8!! (40.Rd8 Qd8 41.Qh6 Rh7 42.Qh7) 1–0. Bulcourf,Carlos – Conlazo Zavalia,Eusebio, Vicente Lopez VALLE, 1993.

11.Rc1 cd4 12.Bd4 A) 12...Nc5= 13.Qc2 (13.a3 Qc7 14.cd5 Bd5 15.Bc4 Rfd8 16.Bd5 Rd5 17.e4=; 13.cd5 Bd5 14.Bc4 Bd6 15.Re1 Bb7 16.Be2 Qe7 17.Nc4=; 13.Nb3 dc4 14.Nc5 Bc5 15.Rc4 Bd5 16.Rc2 Qe7 17.Qc1=) 13...Qc7 14.Be5 Qd8 15.Rfd1 Ng4 16.Bd4 Bh4 17.Rf1=; B) 12...Ba3 13.Rc2 Qe7 14.cd5 e5 15.Ba1 Bd5 16.Nc4 e4 17.Nd4=.

11.Rc1 cd4 12.Nd4 Nc5 13.N4b3 (13.N2b3 Bd6 14.Nc5 bc5 15.Nf3 Ne4 16.Bd3 f6 17.Qc2=; 13.a3 Qc7 14.cd5 Bd5 15.Bf3 Bf3 16.Qf3 Qd7 17.Qe2=; 13.N2f3 Qd6 14.Nb3 Nce4 15.Ne5 Rfd8 16.f3 Nc5 17.Nc5=) 13...Qd6 14.Nc5 Qc5 15.cd5 Qd5 16.Bf3 Qd7 17.Bb7=.

11.Rc1 Re8 12.Qa4 cd4 13.Bd4 Nc5=.

11.Rc1 Re8 12.Ne5 cd4 13.ed4 (13.Bd4 Ne5 14.Be5 Bd6 15.Bd6 Qd6=) 13...Ne5 (13...dc4 14.Ndc4 Bd5 15.Qa4=) 14.de5 Ne4 15.Ne4 (15.Bd4 dc4 16.Nc4 Qd7=) 15...de4+= 16.Qa4 Bc5 (16...Qd2 17.Rc2 Qf4+=) 17.Rcd1 Qe7 18.Bd4 Ba8 19.Be3 (19.Rfe1 Red8 20.Bc5 Rc5 21.Qa7 Qg5+/– (21...Qa7?? 22.Rd8)) 19...a5 (19...Be3 20.fe3 Red8 21.a3=) 20.ba6+= Bc6 (20...Be3 21.fe3 Qc5 22.Qd7+=) 21.Qb3 Ra8 22.Rd6 (better is 22.Rd2!?+=) 22...Bd6+= 23.ed6 Qd6 (23...Ra6?? 24.de7 Re7 25.Rd1+–) 24.Bb6 (24.Rd1 Qc7 25.Qb6 Qb6 26.Bb6 Ra6–+) 24...Qd2 (24...Reb8 25.Rd1 Qe7 26.c5-/+) 25.Bh5 (better is 25.Qe3!? Qa2 26.c5-/+) 25...Ra6 Black is in command 26.a3 (26.Ra1 Rb8 27.Be3 Qf2 28.Kf2 Rb3 29.ab3 Ra1–+) 26...Qd3 27.Qb2 Qa3 (27...Qc4?! 28.Be2 Rb6 29.Qb6 (29.Bc4?? Rb2 30.Rd1 Reb8–+) 29...Qe2 30.Qc6-/+) 28.Qb1 (28.Qa3 Ra3 29.Rd1 Rea8–+) 28...Qd3 29.Qb4 (29.c5 Rea8–+) 29...Ra4 30.Qb2 (30.Qe1 Qc4 31.Qe3 Ra2–+) 30...Rc4 31.Be3 Qc3 32.Qb6 Bd5 33.Qd6 Rcc8 (33...Qf6 34.Rd1–+) 34.Qd7 (34.Rd1 Qf6–+) 34...g6 (34...Qf6 35.f3 ef3 36.Bf3–+) 35.Bg4 Qc7 36.Qc7 Rc7 37.h4 (37.Ra1 Rec8–+) 37...e5 (37...Rec8 38.Re1–+) 38.Be2 (38.Rd1 Rd8–+) 38...Bc4 39.Bc4 Rc4 40.g4 (40.Rd1 Rec8–+) 40...f6 41.Rd1 Rc7 (41...Rec8 42.g5–+) 42.Rd6 Kf7 43.h5 (43.g5 Re6 44.Rd5 Rec6–+) 43...f5 (43...gh5 44.gh5 Ke7 45.Rd5–+) 44.h6 f4 45.Bd2 (45.Bb6 Rc2–+) 45...g5 (45...Re6 46.Bb4–+) 46.Ba5 Ra7 (46...Rc1 47.Kg2–+) 47.Bc3 (47.Bd8 Ra1 48.Kg2 f3 49.Kg3 Rg8 50.Rf6 Ke8–+) 47...Re6 48.Rd5 Kg6 (48...Rc7 49.Bb2–+) 49.Be5 Kh6 50.Bd4 Rb7 51.Kf1 (51.Be5 Rb1 52.Kg2 Kg6–+) 51...Rb1 52.Ke2 Rg1 53.f3 (53.Kd2 Rg4 54.Rd7 e3 55.fe3 fe3 56.Ke2 Rg2 57.Ke1 Rd2–+) 53...ef3 (53...Rg2 54.Bf2 e3 55.Kf1 Rf2 56.Ke1–+) 54.Kf3 Rg3 55.Kf2 Rg4 56.Rd7 (56.Re5 Re5 57.Be5 Kg6–+) 56...Rg3 57.Bg7 (57.Rd5 g4–+) 57...Kh5 58.Bf8 Kg4 Black intends f3 59.Rh7 (59.Rd1–+) 59...Rf3 60.Kg2 Re2 61.Kg1 Rd3 62.Kf1 f3 63.Bb4 (63.Rd7 Rd7 64.Bd6 Rd6 65.Kg1 Rd1) 63...Rd1 (63...Rd1 64.Be1 Rde1) 0–1. Bulcourf,Carlos (2205) – Justo,Damian (2310), Acasusso op, 1991.

11.Rc1 Re8 12.h3 cd4 13.Bd4 (13.Nd4 Nc5=) 13...Bc5 (13...Ba3 14.Rc3 Bb4 15.Rc1+=) 14.Bb2 Qe7 (14...a5 15.ba6 Ba6 16.cd5 Be2 17.Qe2 Nd5 18.Nb3=) 15.Qb3 (15.Qa4 dc4 16.Nc4 Rc7=) 15...Rc7 (15...a6 16.ba6 Ba6 17.Rfd1=) 16.Rc2 (16.cd5 Bd5 17.Qa4 Rec8=) 16...Rec8 (16...Bd6 17.Qa4=) 17.Rfc1 Bd6 18.Qa4 Nc5 19.Qa3 (19.Bf6 Na4 20.Be7 Be7+=) 19...Na6 (19...a6 20.cd5 Bd5 21.Bf6 Qf6 22.ba6+=) 20.Qa4 Nb4 21.Rc3 e5 (21...Ne4 22.Ne4 de4 23.Nd4+=) 22.cd5 (22.Qa7? d4 23.ed4 Bf3 24.Qb6 Rb7–+ (24...Be2?! 25.c5 Qf8 26.cd6 Rc3 27.Rc3-/+)) 22...Rc3 (worse is 22...Nfd5 23.Rc7 Nc7 24.e4+/–) 23.Rc3 Rc3 24.Bc3 Nbd5 25.Bb2 Bb8 (25...e4 26.Nd4 Bb8 27.Nc6 Bc6 28.bc6+=) 26.Nc4 Now all is on e5 (26.e4 Nf4 27.Bc4 Nd7= (worse is 27...Ne4 28.Ne4 Be4 29.Bf7 Qf7 30.Qe4+/–)) 26...Nd7 (26...e4 27.Nfe5=) 27.Nfd2 (27.Qc2 N5f6=) 27...Nc5 Black is in command 28.Qd1 (28.Qc2 e4=) 28...Qe8 (28...Bc7 29.a3=) 29.a4 f6 (better is 29...Bc7=) 30.Nb3 (better is 30.Bh5!? Qe7 31.Ba3=) 30...Na4-/+ 31.Qa1 (better is 31.Qc2!?-/+) 31...Qb5–+ 32.Ncd2 (32.Qd1 Qb4–+) 32...Qe2 33.Qa4 Do you see the mate threat? 33...b5 34.Qa5 (34.Qe4 Kh8–+) 34...Qe1 35.Nf1 Qa5 36.Na5 Ba8 37.Nd2 (37.Ng3 Nb4–+) 37...Bc7 38.Nab3 (38.Ndb3 Nb4–+) 38...a5 39.Nc5 a4 40.Nb1 (40.e4 Nf4–+) 40...Bd6 41.Ne4 (41.Ba3 Kf7–+) 41...Be7 42.Ned2 (42.Nec3 Nc7–+) 42...b4 43.Nc4 Bc6 (43...Bc6 44.Nbd2 Bb5–+) 0–1. Van Rooijen,Peter – Grout,Stephen C (1850), EM/C/A054 ICCF Email, 1998.

11.Qc2 cd4 12.Bd4 a6 13.ba6 Ba6 14.Qa4=.

11.Qc2 Re8 12.Ng5 (12.Rfc1 cd4 13.Bd4 Bd6=) 12...h6 (12...cd4 13.Bd4 e5 14.Bb2+=) 13.Ngf3= Bd6 (13...cd4 14.Bd4 Bd6 15.Rfc1=) 14.dc5 Nc5 15.Be5 (15.cd5 Bd5 16.Nc4 Be4=) 15...Be7 (15...Be5 16.Ne5 Qc7 17.Qb2=) 16.Nd4 (16.Rac1 Nfd7=) 16...Nfd7 17.Bg3 Nf6 (17...a6 18.ba6 Na6 19.Rfc1=) 18.Rac1 Nce4 19.Ne4 Ne4 (worse is 19...de4 20.Rcd1 Nd7 21.Qa4+/–) 20.Qa4 Ng3 21.hg3 Qd7 (21...Qd6 22.Qa7 Rc7 23.Qa4=) 22.cd5 Bd5 23.Nc6 a5 (23...Bc5 24.Rfd1 (24.Na7?? Ra8–+) 24...Qb7 25.e4 (25.Na7 Ra8–+) 25...Bc6 26.bc6=) 24.Ne5 (24.Rfd1 Qc7=) 24...Qd6 25.Qf4 (25.Nc6 Qa3 26.Ne7 Qe7=) 25...Bf6+= 26.Nc4 Qf4 27.gf4 Bc4 28.Rc4 Rc4 29.Bc4 Rc8 (29...Rd8 30.Bb3=) 30.Bb3 (30.Bd3 g6=) 30...Kf8+= 31.Rd1 (31.f5 ef5 32.Rd1 Ke7+=) 31...Ke7 (31...Rc5 32.a4+=) 32.g3 Rc5 33.a4 (33.e4 g5+=) 33...Rc3 34.Rb1 Kd6 35.e4 (35.f5 Ke7+=) 35...Bd4 36.Kg2 f6 (36...Ke7 37.f5+=) 37.g4 White intends f5 (37.f5 ef5 38.ef5 Ke5+=) 37...e5 (37...g6 38.Rb2+=) 38.f5 Kc5 39.Bd1 Kd6 (39...Rd3 40.Bb3+=) 40.f3 (40.Bb3 Rd3=) 40...Rc4 (40...Kc5 41.Kh3=) 41.Kh3 (41.Bb3 Rc7=) 41...Bf2 (41...Be3 42.Kh4=) 42.Kg2 Bh4 (42...Be3 43.Bb3 Rc3 44.Rb2=) 43.Kf1 (43.Rb2 Bg5=) 43...Bg5 (43...Bg3 44.Bb3 Rc3 45.Rd1 Kc5 46.Rd5 Kb4 47.Bd1=) 44.Ke2 Kc5 (44...Bc1 45.Bb3 Rc3 46.Bd5=) 45.Kd3 (45.Rb2 Bf4=) 45...Rd4 46.Kc2 (46.Kc3 Bd2 47.Kb3 Rd3 48.Kc2 Rd6=) 46...Bd2 (better is 46...Ra4!? 47.Be2 Rd4-/+) 47.Kb3 Rd8 48.Kc2 (48.Be2 Kd4+=) 48...Be3 (48...Bb4 49.Kb2+=) 49.Kc3 Bd4 (49...Rd2 50.Bb3=) 50.Kb3 Be3 51.Kc3 Rh8 (51...Rd2 52.Rc1+=) 52.Be2 (52.Kd3 Bf4=) 52...h5 (52...Rd8=) 53.Rh1 (better is 53.gh5!? Rh5 54.Rd1 Bd4 55.Kb3=) 53...h4-/+ 54.Bf1 Bg5 (54...Bf2 55.Rh2 Be1 56.Kb3-/+) 55.Bg2 (55.Bc4 Bd2 56.Kb3-/+) 55...Rd8-/+ 56.Bh3 (56.f4 ef4 57.e5 f3 58.Bf3 fe5–+) 56...Rd4–+ (56...Rd4 57.Ra1 Bd2 58.Kc2 Kb4–+) 0–1. Larsen,Andreas – Vik Hansen,Rune, Tromsoe op, 1998.

11.Bd3 cd4 12.Bd4 Nc5 13.Bc2=.

11.Bd3 Ne4 12.Qc2 f5 13.Qa4 dc4 14.Nc4 cd4 15.ed4 (15.Qa7? Nec5 16.Nd4 Bd5-+ (16...Nd3 17.Ne6 Qe8 18.Nf8 Rc4 19.Qb7 Kf8 20.Bd4+/-)) 15...Ra8 16.Rad1 Ndf6 17.Nfe5 (17.Nce5 Nd5+=) 17...Nd5 (17...a6 18.a3=) 18.Be4 fe4 19.Nc6 Bc6 20.bc6 a6 21.Qc2 b5 22.Ne5 e3 23.fe3 Rf1 (23...Ne3 24.Qb3 Nf1 25.Qe6 Kh8 26.Rf1+/-) 24.Rf1+= Ne3 25.Qb3 Qd5?? (better 25...Nd5+=) 26.Qe3+- Bd6 27.Qf3 Be5 (27...Qf3 28.Rf3 Rc8+-) 28.Qf7 Kh8 29.Qf8!! Rf8 (29...Rf8 30.Rf8 Mate attack) 30.Rf8 1-0. onur604 (2320) - Arfans_PercasiCMS (2310), Casual Rapid game, lichess.org, 2021.

12.Qb3 a6 13.a4 (13.ba6 Ba6 14.Rab1 b5 15.cd5 c4+=) 13...a5 (13...Bd6 14.ba6 Ba6 15.Rab1=) 14.Rac1 Rc8 15.Rfe1 (15.Rfd1 Bd6=) 15...Qc7 (15...Bd6 16.cd5 ed5 17.dc5 Nc5 18.Qa2=) 16.Ne5 (16.cd5 Bd5 17.Bc4 Qb7=) 16...dc4 (16...Rfd8 17.Nd7 Rd7 18.Red1=) 17.Nec4 (worse is 17.Rc4 Bd5-/+) 17...Nd5 (17...cd4 18.Bd4 e5 19.Bb2=) 18.e4 Nb4 (18...Nf4 19.Qf3=) 19.Qe3+= Nf6 (19...Na2 20.Rcd1 Nb4 21.dc5 Bc5 22.Qg5+=) 20.Red1 (20.dc5 Bc5 21.Qf3 Qe7 22.Bf6 Qf6 23.Qf6 gf6+/–) 20...Rfd8 (better is 20...Na2 21.Rb1 Nb4+=) 21.d5+– ed5 (21...Ba8 22.de6 fe6 23.Qh3+–) 22.Be5 dc4 (better is 22...Qd7 23.Nb6 Qe6 24.Nc8 Rc8+–) 23.Bc7 Rc7 24.Nc4 (24.Rc4?! Rcd7+–) 1–0. DEFFM – safeking, freechess.org, 2018.

12.Qb3 Qc7 13.Ne5 (13.cd5 Bd5 14.Bc4 Rfc8=) 13...Ne5 (13...Rfd8 14.Nd7 Rd7 15.Rfc1=) 14.de5 Nd7 15.f4 (15.cd5 ed5 16.Qc3 a6=) 15...Rfd8 (15...a6 16.ba6 Ra6 17.Qc2=) 16.Qc2 (16.cd5 ed5 17.Qc2 a6=) 16...Nf8 (16...a6 17.a4=) 17.a4 (17.cd5 ed5 18.f5 a6=) 17...a6 18.cd5 ab5?? (better is 18...ed5 19.f5 Bg5=) 19.d6+– Qc6? (better is 19...Bd6 20.ed6 Qd6+–) 20.Bf3 (20.Bf3 Qd7 21.de7 Qe7 22.ab5 Bf3 23.Nf3+– (worse is 23.gf3 Qd7 24.Nc4 Ra1 25.Ba1 Qb5+–)) 1–0. DEFFM – GuestYXDQ, freechess.org, 2018.

12.Qb3 Bd6 13.cd5 Bd5 14.Qa3=.

12.Qb3 Bd6 13.cd5 Bd5 14.Nc4=.

12.Rfd1 a6 13.Rdc1=.

12.Rfd1 dc4 13.Nc4 Qc7 14.Rac1 Rfd8 15.Nfe5 (15.a3 Bd5+=) 15...Ne5 (15...a6 16.Nd7 Nd7 17.a3=) 16.Ne5+= Nd7 17.Nc6 Bc6 18.bc6 Nf6 19.Ba6 cd4 20.Bd4 Rd5 21.Bf6 Bf6 22.Rd5 ed5 23.Bb7 (23...Rd8 24.Qa7+/–) 1–0. Grehl,Siegfried – Skjornberg, corr CiF, 1989.

11.ed4 Ne4 12.a4 (12.cd5 Nd2 13.Nd2 Bd5=) 12...a6 (better 12...Bb4!?=+) 13.cd5+= ed5 14.Bd3 (14.ba6 Ba6 15.Ba6 Ra6 16.Ne4 de4+=) 14...Bb4 (14...ab5!? 15.Bb5 Ndf6=) 15.ba6+= Ba6 16.Ne4 Bd3 (16...de4 17.Be4 Bf1 18.Ba8 Bg2 19.Kg2 Qa8 20.d5=) 17.Qd3 de4 18.Qe4 Nf6 19.Qd3 Bd6 20.Rfe1 Qd7 21.d5 Rfe8 (21...Ra5 22.Bf6 gf6 23.g3+/-) 22.Bf6 gf6 23.Re8 Re8 24.a5 ba5 25.Ra5 Qc7 26.Ra1 Be5 27.Rb1 Rd8 28.Rd1 Bd6 29.Qf5 Be5 30.g3 Qc3 (better 30...Qd7 31.Qh5 Re8+-) 31.Ng5! h6 (31...fg5 32.Qg5 Double attack (32.f4 Decoy)) 32.Qh7 (32.Qh7 Kf8 33.Qf7) 1-0. DEFFM – GuestYSQM, freechess.org, 2021.

11.Bd4 a6 12.cd5 Nd5 13.Qc2=.

11.Bd4 Nc5 12.a4 dc4 13.Bc4 (13.Nc4 Bd5=) 13...Nfe4 (13...Rc8 14.Qc2=) 14.Ne4 Be4 15.Nd2 (15.Ne5 Bd6=) 15...Bb7 (15...Bf5 16.Qf3=) 16.Be2 (16.a5 ba5 17.Qg4 Bf6=) 16...Rc8 (16...Bf6 17.Bc5 bc5 18.Rc1=) 17.Bf3 Bf3 (17...Bd6 18.Bb7 Nb7 19.f4=) 18.Nf3 (18.Qf3 Qc7=) 18...f6 (18...Qc7 19.Qc2=) 19.Bc5 Bc5 (19...bc5 20.Qc2+=) 20.Qb3 Qe7 21.Rfd1 (21.Rac1 Rcd8+=) 21...Rfd8= 22.h3 Kf8 (22...Qf7 23.Rd8 Rd8 24.Rd1 Rd1 25.Qd1+=) 23.Rd8 (23.Rac1 Kg8+=) 23...Rd8= 24.Rd1 Rd1 (24...Rd6 25.Rd6 Qd6 26.Qc2=) 25.Qd1 Ke8 (25...Kg8 26.Nd4=) 26.Qd3 (26.Qc2 Qd7+=) 26...Qd7= 27.Qc2 (worse is 27.Qh7 Qd1 28.Kh2 Bd6 29.Ne5 Be5 30.f4 Bd6 31.Qg7 Qa4 32.Qf6 Qe4 33.Qh8 Kf7 34.Qh5 Ke7 35.Qg5 Ke8 36.Qg8 Bf8-/+) 27...g6 (27...Kf8 28.Ne1+= (28.Qh7? Qd1 29.Kh2 Bd6 30.Ne5 Be5 31.f4 Bc3–+)) 28.Nd2 (28.e4 Kf8+=) 28...Qd5 (28...Kf7 29.Nb3+=) 29.Ne4 (29.Nb3 Kf8+=) ½–½. Schwichtenberg,Juergen – Eidam,Horst, Wch Seniors Gladenbach, 1999.

11.Bd4 Nc5 12.a4 Rc8 13.Rc1=.

11.Bd4 Nc5 12.a4 Nfe4 13.Qc2 Rc8 (13...Nd2 14.Nd2 Rc8 15.a5=) 14.Rfd1 (14.Ne4 Ne4 15.Rfd1 Bd6=) 14...Bd6 15.Rab1 (15.Ne4 de4 16.Nd2 Qc7=) 15...Qe7 (15...Nd2 16.Nd2 dc4 17.f3+= (17.Qc4? Bh2 18.Kf1 Bd5-/+)) 16.Bd3 (better is 16.cd5!? Nd2 17.Rd2 Bd5 18.Rc1+=) 16...Nd3-/+ 17.Qd3 e5 (17...Nd2 18.Nd2 dc4 19.Nc4-/+) 18.Bb2 Nc5 19.Qc2 dc4 (19...e4 20.Nd4 Qe5 21.Nf1 dc4 22.Qc4-/+) 20.Nc4+= e5 seems the pivot of the position 20...Bf3 (better is 20...Be4 21.Qe2 Na4 22.Nd6 Rc2+=) 21.Rd6? (better is 21.gf3 Bb8 22.a5 Qg5 23.Kh1-/+) 21...Qg5 (21...Be4 22.Qd1 Bb1 23.Qb1 Na4 24.Ba3–+) 22.g3 Ne4 (better is 22...Be4 23.Qd1 Bb1 24.Qb1 Na4 25.Ne5 Nb2 26.Qb2 Rc5–+) 23.Rd5?? (better is 23.Rc6 Rc6 24.bc6-/+) 23...Ng3!–+ 24.hg3 (24.fg3 Bd5) 24...Qh5 (24...Qh5 25.Qh7 Qh7 26.Be5 Qh1) 0–1. Dietrich,Christian – Nuesken,Nikolas, Niedersachsen–chT U12, 1999.

11.Bd4 Nc5 12.Qc2 Rc8=.

11.Bd4 Nc5 12.Ne5 Qc7=.

11.Bd4 Rc8 12.Qa4 Ra8 (12...Qc7 13.Bc3=) 13.Rac1 Nc5 14.Bc5 (14.Qc2 a6=) 14...Bc5 (14...bc5 15.cd5 ed5 16.Rfd1=) 15.cd5 Bd5 16.Rfd1 Qe7 17.Bc4 Rfd8 18.Ne5 Qc7 19.Bd5 Nd5 20.Nef3 (20.Ndc4 Rac8+=) 20...Qe7 21.Ne4 Ba3 22.Rc6 Qb4 23.Rc4 Qa4 24.Ra4 Be7 25.Nd4 Rdc8 26.Nc6 Rc7 27.Rc4 f5 (27...Kf8 28.Nc3 Nc3 29.Rc3=) 28.Ne7 Re7 29.Ng5 (29.Ng3 Rd8+=) 29...h6 30.Nf3 Rc7 (30...a6 31.ba6 g5 32.e4 fe4 33.Re4–+) 31.Rc7+= Nc7 32.Nd4 (32.a4 Nd5+=) 32...Rd8 (32...a6 33.Rc1 Nb5 34.Ne6=) 33.Rc1+= Rd7 34.Kf1 g6 (34...e5 35.Nf5 Nb5 36.Ke2=) 35.a4+= g5 36.h3 Kf7 37.Nc6 a5? (better is 37...Kf6+/–) 38.Ne5+– Ke7 39.Nd7 Kd7 40.Rc6 Na8 (40...Nd5 41.g4 f4 42.e4+–) 41.g4 fg4 42.hg4 (42.hg4 h5 43.gh5+–) 1–0. Schirmer,Michael – Daikeler,R, corr BdF GT, 1991.

11.Nd4 Nc5 12.a4 Rc8+= 13.Ba3 (13.Rc1 Qc7+=) 13...Nfe4 14.Bb4 (14.Ne4 Ne4 15.cd5 Ba3 (worse is 15...Bd5 16.Nc6 Bc6 17.Qd8 Rfd8 18.Be7+=) 16.Ra3 Qd5+=) 14...Nd2-/+ 15.Qd2 Ne4 16.Qb2 dc4 17.Rac1 Bb4 18.Qb4 Will c4 fall? 18...Bd5 (better is 18...Qd6 19.Qd6 Nd6-/+) 19.Nf3? (19.Rfd1!? Qd6 20.Qd6 Nd6 21.Nc6 Bc6 22.Rd6+=) 19...Qd6 (19...c3 20.Rc2–+) 20.Qd6-/+ Nd6 21.Rfd1 Rfd8 22.Ne1 (22.Ne5 c3-/+) 22...c3 23.Ra1 (23.Rd3!? Bb3 24.Bd1 Bd1 25.Rcd1–+) 23...Bb3 24.Rdc1 Ne4 (24...Nb7 25.f4 Rd2 26.Kf1–+) 25.f3? (better is 25.Bf3!? Bd5 26.Ra3+=) 25...Nd2 26.Ra3 Kf8 (26...g6 27.a5–+) 27.Bd3 Rd5 (better is 27...e5!?–+) 28.Bc2+= Bc2 29.Nc2 Rd3 30.Kf2?? (better is 30.Nb4 Re3 31.Kf2+=) 30...Nc4–+ 31.Raa1 (31.Rb3 Nb2 32.Nb4 Rc5–+) 31...Rd2 32.Kg3 Rc5 33.f4 Na5 (better is 33...e5!? 34.Rab1–+) 34.Ra3 g5 35.Kf3 gf4 36.ef4 Nb7?? (36...Kg7!? 37.h3–+) 37.Nb4? (37.Ne3!?+=) 37...c2 (better is 37...Rc4 38.Nc6 Rd3 39.Kg4 Nc5–+) 38.Nc6? (38.Rd3 Rd3 39.Nd3 Rc3–+) 38...Rd1 (better is 38...Kg7–+) 39.Raa1-/+ Rc1 40.Rc1 Rc4 41.Ke3?? (better is 41.Ne5 Rc3 42.Ke2-/+) 41...Nc5–+ 42.Nd4 (42.Ne5 Re4 43.Kf3 Re5 44.fe5 Nb3 45.Rc2 Nd4 46.Kf2 Nc2–+) 42...Rd4! (42...Rd4 43.Kd4 Nb3 44.Kc3 Nc1 45.Kc2 Ne2–+; 42...Ra4?! 43.Rc2 Ra3 44.Ke2-/+; 42...Na4?! 43.Rc2 Rc2 44.Nc2-/+) 0–1. Gibson,E Diarmid – Milton,Anna, Glasgow SCO, Commonwealth Ch, 2014.

11.Nd4 Nc5 12.Rc1 a6 13.cd5 Nd5 14.ba6 Ba6=.

11.Nd4 Nc5 12.Nc6 Bc6 13.bc6 Qc7=.

11.Nd4 Nc5 12.cd5 Bd5 (12...Nd5 13.Rc1=) 13.N2b3 (13.f3!?=) 13...Na4+= 14.Rb1 Rc8 (14...Bd6 15.Bf3+=) 15.Bf3 Ne4 (15...Bc4 16.Re1 Bd6 17.Ba1=) 16.Nc6 (16.Be4 Nb2 17.Qf3=) 16...Qe8 (16...Nb2 17.Rb2 Qe8 18.Nbd4=) 17.Ne7 (better is 17.Be4 Nb2 18.Qf3 Be4 19.Qe4+–) 17...Qe7= 18.Be4 Nb2 (18...Be4!? 19.Qd4 Nb2 20.Qe4 f5+=) 19.Bh7+= Kh7 20.Rb2 Qg5 (20...g6 21.Qg4=) 21.g3 (21.f4!? Qg6 22.Nd4+=) 21...Rc4 ½–½. Jensen,Henrik W (2095) – Mathiesen,Erik, Politiken Cup, 1999.

11.Nd4 Nc5 12.N4f3 Rc8 (12...a6 13.Nb3=) 13.a4 (13.Rc1 a5=) 13...Nfe4 14.Ne4 Ne4 (14...de4 15.Nd4=) 15.Rc1 Bf6 (15...Qd6 16.Qd4 Bf6 17.Ne5+=) 16.Nd4 (16.Bf6 Qf6 17.Qd4 Qd4 18.ed4 Rfd8+=) 16...Qd7 17.Bd3 dc4 (17...Nc5 18.Be2+=) 18.Bc4= Rfd8 (18...Nc5 19.f4=) 19.Qe2 Qe7 (19...Nc5 20.Rfd1 Qe8 21.Ra1=) 20.Bd3 (20.f3 Nc5=) 20...Nc5 21.Bc2 Rd5 (21...h6 22.Rfd1=) ½–½. Liepert,Luise – Schneider,Birgit, BL (Women) Germany, 1993.

11.Nd4 Qc7 12.cd5 Bd5 13.Bf3=.

11.Nd4 Qc7 12.cd5 Nd5 13.Rc1 Nc5=.

11.Nd4 Qc7 12.cd5 Nd5 13.Bc4 Nc5 14.Qe2 Bd6 15.Qh5=.

11.Nd4 Qc7 12.cd5 Nd5 13.Bc4 Nc5 14.Qe2 Bf6 15.Bd5 (15.Rac1 Rfd8=) 15...Bd5 16.e4 Bb7 17.f4 Bd4 (17...a6 18.Rac1+=) 18.Bd4= Rfd8 19.Be5 Qe7 (19...Qd7 20.Qg4 g6 21.Rad1 Qb5 22.Qh4+=) 20.Rf3 (20.Rac1 f6 21.Ba1 a6+=) 20...a6 21.ba6 Ra6 (21...Ba6 22.Qe3+=) 22.Rg3 g6 (22...f6 23.Bc3+=) 23.a3 (23.Re3!?+=) 23...Ra4-/+ e4 draws heavy fire 24.Rb1 (24.Rh3 f6 25.Bc3 Be4-/+) 24...f6 (24...f6 25.Bc3 Ba6-/+; 24...Rd2 25.Qd2 Ne4 26.Qe3-/+) 0–1. Trokenheim,Marek – Woelfelschneider,Peter, TT–12 ETC, 2004.

11.Nd4 Qc7 12.cd5 Nd5 13.Bc4 Nc5 14.Qe2 Nf6 15.Rac1 Rac8 16.N4b3 Rfd8 17.Nc5 bc5 (17...Bc5 18.Nb3+=) 18.Rfd1 (18.f4 Rd7+=) 18...Nd7 (18...Rb8 19.f4+=) 19.Bd3 (19.Qh5 Bf6 20.Bf6 Nf6=) 19...Bd5 (19...Bf6 20.Nc4+=) 20.Rc2 (20.Qh5 h6+=) 20...Bf6 (20...f5 21.Nc4+=) 21.e4+/– Bb7 22.Bf6 Nf6 23.e5 Nd5 24.Nc4 Nf4 25.Qe3 Ng2 26.Qh3 (26.Qg3!? Rd3 27.Qd3+/– (< 27.Rd3 Ne1 28.Rcc3 Nd3 29.Rd3 Bd5=+)) 26...g6 27.Rcd2 (27.Qg3 Rd4 28.Nd6 Nf4 29.Nc8 Bc8+=) 27...Nf4 28.Qe3 Nd3=+ 29.Rd3 Rd3 30.Rd3 Bd5 31.Nd6 c4 32.Ra3 Ra8 33.Qh6 Rd8 34.Qe3 a5 35.Rc3 f6=+ 36.f4 Qe7 37.Rc1 fe5 38.fe5 Qh4 39.h3 Rf8 40.Rf1 Rf1 41.Kf1+= g5 42.b6 g4 43.hg4 Qg4 44.Ke1 Qg2 (44...a4 45.Kd2 Qg2 46.Qe2 c3 47.Kd3 Qg6 48.Kc3+=) ½–½. mrkt – Morphystyle, ChessWorld.net, 2004.

11.Nd4 Rc8 12.Rc1 Nc5 13.cd5 Nd5 14.Nc4 Qc7 15.a3 Rfd8 16.Qc2 Bf6 17.Nf3 Bb2 18.Qb2 Qe7 19.Nce5 (19.Rfd1 Nc7=) 19...f6 20.Nd3 (20.Nc4 Nc7=) 20...Nd3 (20...Na4!? 21.Qb3 Nac3-/+) 21.Bd3= Rc1 22.Rc1 Ne3 23.Bh7 (23.fe3 Rd3 Double attack (23...Rd3 Discovered attack; 23...Rd3 Decoy)) 23...Kh7 24.fe3 Rd5 25.Nd4 Re5 26.Nc6 Bc6 27.bc6 (worse is 27.Rc6 Re3 28.Qb1 f5-/+) 27...Rc5 ½–½. Lorenc,Tomas (2090) – Roesemann,Rainer (2240), Karlovy Vary op, 2009.

11.a4 Nd2 12.Qd2 dc4 13.Rac1=.

11.a4 f5 12.a5 ba5 13.Nb3=.

11.a4 f5 12.a5 ba5 13.Ne4 fe4+=.

11.a4 f5 12.a5 Rb8 13.ab6 ab6 14.Ne4 fe4 15.Nd2 Nf6 16.Qb3 (16.Ra7 Bd6+=) 16...Kh8 (16...Qc7 17.Ra7=) 17.f3 Bd6 (17...ef3 18.Bf3 Qc7 19.Ra7+=) 18.fe4 de4 19.dc5 (19.Qc3 Qc7 20.h3 cd4 21.ed4 Bh2 22.Kh1 Bf4=) 19...Bh2= 20.Kh2 Qd2 21.Rfe1 bc5 22.Rad1 (22.Be5 Rbd8+=) 22...Qa5 23.Be5 Rbd8 (23...Ra8 24.Rf1+=) 24.Rd8 (24.Qc3 Qc3 25.Bc3 Ra8+=) 24...Rd8 (24...Qd8!? 25.Qc3 Kg8=) 25.Qc3 (25.Ra1 Qb6 26.Qc3 Rf8+/–) 25...Qc3+= 26.Bc3 Kg8 27.Rd1 (27.Ra1 Kf7+=) 27...Rd1= 28.Bd1 Kf7 29.Kg3 (29.Be5 Nd7 30.Bd6 Kf6+=) 29...g5 (29...Ke7 30.Kf4=) 30.Kf2 Kg6 31.Be5 Nd7 32.Bc7 Kf5 (32...h5 33.b6 Nf6 34.Ke2=) 33.g4 (33.Kg3 h6+=) 33...Kg6 34.Ke1 (34.Kg3 Kf7=) 34...Kf7 35.Kd2 Ke7 36.Kc3 e5 37.Kb3 Ke6 38.Ka4 Ke7 39.Ka5 White prepares b6 39...Bc8 40.Bb6 Bb7 (40...Nb6? 41.Kb6 Kd6 42.Ka7+–) 41.Bc7 Bc8 42.b6 h6 43.Ba4 Nf6 44.Kb5 (44.Bb5 Ng4 45.Ba6 A) 45...Ne3? 46.Bc8 Nc4 47.Kb5 Nb6 48.Bb6+– (worse is 48.Kb6 e3 49.Bg4 c4 50.Be5 Kf7+–); B) 45...Ba6 46.Ka6 Nf6 47.Be5 Nd7+/–) 44...Bd7= (44...Bg4?? 45.b7 (45.Kc5?! Bc8+=) 45...Bd7 46.Ka5 Ba4 47.b8Q+–) 45.Kc5 Ba4 46.b7 Nd7 47.Kd5 Attacking the isolated pawn on e5 47...Bb3 48.Be5 (better is 48.b8Q Nb8 49.Bb8=) 48...Bc4!-/+ 49.Ke4 (49.Kc4 Ne5 Double attack (49...Ne5 Deflection; 49...Ne5 Overloading)) 49...Be6 (49...Be2 50.b8Q Nb8 51.Bb8 Bg4 52.Bg3–+) 50.b8Q (better is 50.Bg7!?+=) 50...Nb8–+ 51.Bb8 Bg4 52.Kd3 (52.Ke5 h5–+) 52...h5 53.e4 h4 54.Ke3 Ke6 (54...Bd1 55.Bc7–+) 55.Kf2 ½–½. Bulcourf,Carlos – Langier, corr ARG–93–427, 1977.

11.a4 f5 12.Nb3 Qc7 13.Rc1 (13.a5 Rad8+=) 13...Bf6 (13...Bd6 14.Nbd2+=) 14.Ba3 (14.Nfd2 Rac8=) 14...Rfd8 (14...Rad8 15.Nfd2+=) 15.Nfd2= cd4 (15...Bh4 16.g3 Be7 17.cd5 Nd2 18.Nd2 Bd5 19.Bd3=) 16.Nd4 (16.cd5 Nc3 17.ed4 Rdc8 18.Rc3 Qc3 19.de6 Nf8+–) 16...Bd4 (16...Ndc5!?=) 17.ed4+= Qf4 18.Ne4 de4 19.Be7 Re8 20.g3 Qh6 (20...Qc7 21.Bg5 h6 22.Be3+/–) 21.Bb4 (21.Bd6 Nf6 22.c5 Bd5+/–) 21...e3 22.c5 (22.a5 Rad8 23.ab6 ab6+=) 22...Bd5+= 23.Bc4 (better is 23.c6!? Nf6 24.f4+=) 23...Nf6+= 24.f3 f4 25.Qe2 Qg5 26.Qg2 Nh5 (26...a5 27.ba6 Bc4 28.Rc4 Ra6 29.cb6 Ra4 30.Rc5+=) 27.g4= Nf6 28.Be1 (28.c6 a5 29.ba6 Bc6=) 28...Qg6 (28...Bc4 29.Rc4 h5 30.gh5 Qh5 31.c6-/+) 29.Qe2 (better is 29.Qc2 Qc2 30.Rc2 Bc4 31.Rc4=) 29...Ng4?? (better is 29...Bc4 30.Rc4 h5+=) 30.Bd3 (30.fg4!? Qe4 31.Bd5 ed5+–) 30...Qh6+/– 31.fg4 f3?? (better is 31...Rf8 32.Rf3 Qg5+/–) 32.Rf3+– Bf3 33.Qf3 Rf8 34.Qe2 (better is 34.Qe4 Rad8 35.Bg3+–) 34...Rf2+/– 35.Bf2 ef2 36.Kf2 Qc1 37.Qe6 Kh8 38.c6 (better is 38.Qe4!? Rf8 39.Kg2 Qd2 40.Kh3 Qh6 41.Kg3+–) 38...Qd2 (38...Rf8 39.Kg2 Qb2 40.Qe2 Qd4=) 39.Be2 (39.Qe2!? Qf4 40.Kg2 Qd4 41.Bf5=) 39...Rf8+= 40.Kg2 Qd4 41.Bf3 (41.Kg3 Qa4 42.Qe3 Qb4+=) 41...Qf4 (41...Qa4!? 42.Qe5 Qc2 43.Be2 Qg6+=) 42.Qe4= Qd2 43.Kg3 (43.Be2 Qg5=) 43...Qd6 44.Kg2 h6 45.Qd5 ½–½. Lorenc,Tomas (2175) – Rozkovec,Hynek (2155), CZE–chTV, 2001.

11.a4 Bf6 12.Qc2 (12.Ne4 de4 13.Ne5 a6=) 12...Nd2 13.Nd2 cd4 14.ed4 dc4 15.Nc4 Rc8 (15...Be7 16.Bd3 Nf6 17.a5=) 16.Bd3 h6 17.Rae1 (17.Qe2 Nb8=) 17...Be7 (17...Bd5 18.Qe2=) 18.Rc1 (18.f4 Bb4 19.Rc1 Bd5=) 18...Nf6 19.Qe2 Qd5 20.f3 (20.f4 Rfe8=) 20...Qh5 (20...Rfd8 21.a5 ba5 22.Na5=) 21.a5 (21.Qe5 Bd5=) 21...Nd5 (21...Nd7 22.ab6 ab6 23.Ne5 Ne5 24.Qe5=) 22.Qe4+= g6 23.ab6 ab6 (23...Qg5 24.g3 (24.ba7?? Nf4 25.Qf4 Qf4–+) 24...ab6 25.f4 Nf4 26.Qf4+=) 24.Nb6 Rc1 25.Bc1 Bd6 (25...Nb6 26.Qb7 Nd5 27.Be4+=) 26.h3 (better is 26.g3+/–) 26...Nb4 (better is 26...Nb6!? 27.Qb7 Nd5+=) 27.Qb7+– Nd3 28.Nd7 Nc1?? (better is 28...Qh4 29.Qe4 Qe4 30.fe4 Nc1 31.Rc1 Rd8+/–) 29.Nf6 (29.Nf6 Kh8 30.Nh5 (30.Rc1?! Qg5 31.Qc6 Qe3 32.Kh1 Qd4=) 30...Ne2 31.Kf2 Nd4 32.Nf6+–; 29.Rc1?! Qg5 30.Re1 Qf4+=) 1–0. DEFFM – Guestxxx, freechess.org, 2018.

11.Qb3 Nd2 12.Nd2 cd4 13.ed4 (13.Bd4 e5 14.Bb2 Rc8=) 13...dc4+= 14.Bc4 (14.Nc4 a6+=) 14...Nf6 (14...a6 15.ba6 Ba6 16.Rfb1+=) 15.Nf3 (15.f4 Bd5=) 15...Bd6 (15...a6 16.ba6 Ba6 17.Ne5+=) 16.Ne5 Nd5 (16...a6 17.a4+=) 17.f4= Rc8 (17...a6 18.ba6 Ba6 19.Ba6 Ra6 20.f5=) 18.Rac1 Qh4 19.g3 (19.f5 Ba8=) 19...Qh3+= 20.Nc6 (20.Rf2 Rfd8+=) 20...Nf6 (20...Nb4 21.Qf3 Nc6 (21...Bc6?! 22.bc6 Rc6 23.Ba3=) 22.bc6 Rc6 23.Be6 Qe6 24.Rc6 Qa2-/+) 21.d5? (better is 21.Rf2=) 21...Ng4–+ Do you see the mate threat? 22.Rc2 Bc5 (22...ed5 23.Bd3 Bc6 24.bc6 Bc5 25.Kh1–+) 23.Bd4 Bd4 24.Nd4 Bd5 (24...ed5 25.Bd3 Rc2 26.Qc2–+) 25.Bd5 (25.Nc6 Bc6 26.bc6 Rc6–+) 25...Rc2 (25...ed5?! 26.Nc6 Kh8 27.Rd2+=) 26.Qc2 ed5?? (better is 26...Qf1! 27.Kf1 Ne3 28.Ke2 Nc2 29.Nc2 ed5–+) 27.Qd2 (27.Re1 Ra8+=) 27...Nf6 (27...Re8 28.Rc1-/+) 28.Nc6 Qd7 29.Rd1 Attacks the isolani on d5 (29.Re1 Re8+=) 29...a6 (29...Re8 30.Rc1-/+) 30.a4 (30.Qd4 ab5 31.Qb6 Qe6 32.Qb5 Qe3 33.Kg2 Qe4 34.Kg1 Qc2-/+) 30...ab5 (30...Re8 31.Ne5 Qc8 32.Rc1+=) 31.ab5 Ra8 (31...Re8 32.Ra1-/+) 32.Qb4 (32.Re1 Qh3+=) 32...h6 (32...Re8 33.Ra1-/+) 33.Qd4 (33.Re1 Qh3 34.Qd2 Qh5-/+) 33...Ra2 34.Rd2 (34.Ra1 Ra1 35.Qa1 Qe8-/+) 34...Rd2 35.Qd2 Qd6 (35...Qe8 36.h3-/+) 36.Qe2 (36.Qd4 Qc7+=) 36...Qc7 (36...Qc5!? 37.Kg2 Ne4-/+) 37.Qe5+= Qd7 (37...Qb7 38.Kf1+=) 38.Ne7 (better is 38.Qb8!? Qe8 39.Qe8 (39.Qb6 Qe1 40.Kg2 Qe2 41.Qf2 Qb5-/+) 39...Ne8 40.Ne7 Kf8 41.Nd5=) 38...Kh7-/+ 39.Nc6 Ne4 (39...Qg4 40.Nd4-/+) 40.Ne7 (40.Nb4 Qc8 41.Nd5 Qc5 42.Kg2 Qc2 43.Kh3 Nf2 44.Kh4–+) 40...Qb5?? (better is 40...f6 41.Qf5 Qf5 42.Nf5 g6-/+) 41.Qf5 (41.Qf5 Kh8 42.Qc8 Qe8 43.Qe8 Kh7 44.Qg8) 1–0. Makowski,Z – Madolinski,R, Szczecin Poland, 1982.

11.Rc1 Bf6 12.a4 (12.Qc2 Nd2 13.Qd2 a6 14.dc5 Nc5 15.ba6 Ba6 16.Bf6 Qf6 17.cd5 Ne4=) 12...Qe7 13.Qc2 Nd2 14.Nd2 cd4 15.ed4 Rac8 16.Nb1 (16.Bf3 a6=) ½–½. Schirmer,Michael – Grosso,R, corr ICCF WT–H–838, 1992.

11.Qc2 Nd2 12.Nd2 cd4 13.Bd4 Qc7=.

11.Qc2 f5 12.a4 a5 13.cd5 ed5 (13...Nd2 14.Qd2 Bd5 15.Rac1=) 14.Ne5 (14.dc5 Ndc5 15.Be5 Bf6=) 14...Rc8 (14...Ne5 15.de5 Qd7 16.Nb3=+) 15.Ne4 fe4 (15...de4? 16.Qc4 Kh8 17.Nf7 Rf7 18.Qf7+–) 16.Qd1 (16.Nd7 Qd7 17.dc5 Bc5=) 16...Ne5=+ 17.de5 Bg5 (17...Rc7 18.Rc1=+) 18.Bg4= Rc7 19.Be6 Kh8 20.Bc3 (20.Qg4 Be7=) 20...Re7 (20...Re8 21.Qg4=) 21.Qg4 Bh6 22.Rfd1 Rfe8 (22...Rc7 23.Ra2+=) 23.Bf5+= g6 (23...Qc7!?+=) 24.Be4!+– Bg7 (24...de4 Exploits the pin 25.Rd8) 25.f4 Qc8? (better 25...Qa8 26.Bf3 Bc8+–) 26.Qc8+– Rc8 (26...Bc8 27.Bd5 (27.Rd5?! Bb7+–) 27...h6 28.Bc6+–) 27.Bd5 (27.Bd5 Bd5 28.Rd5+–) 1–0. onur604 (2320) – drNoobstein2020 (2260), lichess.org, 2020.

11.Qc2 f5 12.cd5 Bd5 13.Nc4 Rc8 14.Rac1 cd4 15.ed4 (15.Nd4 a6=) 15...Bf6 (15...a6 16.Qa4 (16.ba6? b5-+) 16...ab5 17.Qb5 Rc4 A) 18.Rc4?? Nd6 (worse 18...Bc4 19.Bc4 Rf6 20.Qb3+-) 19.Qb3 b5-+ (19...Nc4?! 20.Bc4 Nf6 21.Rc1=); B) 18.Bc4=) 16.Qa4+= Rc7 17.Ne3 Ba8 (17...Rf7!?+=) 18.Rc7+/- Qc7 19.Qb3 Re8 20.Rc1 (20.Bc4 Kh8 21.Rc1 f4 22.Be6 Qb7+-) 20...Qb7 (20...Qf4 21.g3 Qb8 22.Nf5+/-) 21.Nf5 Nd2 22.Qb4 ef5 23.Qd2 Kh8 24.Bc4 Nf8 25.d5 Bb2 26.Qb2 Qd7 (26...Ng6+-) 27.Ne5 Qd6?? (27...Qe7 28.f4 Qc5 29.Qf2 Qa3+-) 28.Nf7 (28.Nf7 Kg8 29.Nd6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

11.cd5 Bd5 12.Bd3 Nd2 13.Nd2 cd4 14.Bd4 Bf6 15.Bf6 Nf6 16.Qe2 Qe7 17.e4 Bb7 18.Nc4 Nd7 (18...e5 19.Ne3=) 19.e5+= Rfd8 20.f4 Nc5 21.Bc2 Bd5 22.Nd6 Nb7 23.Ne4 (23.Nb7 Bb7 24.Rad1 Bd5=) 23...Rac8 24.Rf3?? (24.Bd3!?=) 24...Nc5 (24...Qb4 25.Rd1 Rc2 26.Qc2 Be4 27.Rd8 Nd8 28.Qb3 Qc5 29.Rf2-+) 25.Nf6? (better 25.Kh1=+) 25...gf6-+ 26.Bh7 Kf8 (26...Kh7?? 27.Rh3 Kg7 28.Qg4 Kf8 29.Rh8) 27.Rg3 Ke8 28.f5 (28.Rg8 Kd7 29.Rg7 Na4-+) 28...fe5 29.Qe5 Qd6 (29...Nd7 30.Rg8 Nf8 31.h3-+) 30.Qf6 (30.Qe3-+) 30...Qe7 31.Qe5 Qd6 32.Qg7?? (better 32.Qf6=) 32...Qf8 (better 32...Ne4 33.Rd3 Qc5 34.Qd4-+) 33.f6 (33.Qf8 Kf8 34.f6 Ke8-+) 33...Kd7 (33...Nd7 34.Kh1-+) 34.Qg5 (34.Rd1 Rc7-+) 34...Kc7 35.a4 Kb7 36.a5 Ne4 (better 36...Nb3!? 37.a6 Ka8 38.Rb1 Qc5 39.Qe3-+) 37.Be4 Be4 38.a6 (38.ab6 Qd6 39.Qe3 Qb6-+) 38...Ka8 39.Qg7 (39.Qe3 Bd5 40.Rg4-+) 39...Qc5 40.Kf1 Qb5 (40...Rd2 41.Re3 Qe3 42.Qf7 Bg2) 41.Ke1 Qb4 (41...Qc5 42.Rc3 Qc3 43.Kf1 Qd3 44.Kf2 Rc2 45.Kg1 Qd1 46.Rd1 Rd1) 42.Kf1 Bd3 (42...Qc4 43.Ke1 Qd4 44.Rc3 Qc3 45.Kf1 Qd3 46.Kf2 Rc2 47.Kg1 Qd1 48.Rd1 Rd1) 43.Rd3-+ Rd3 44.Qf7 (44.Re1 Qf4 45.Kg1-+) 44...Qf4 45.Ke1 (45.Kg1 Qd4 46.Kf1 Qa1 47.Ke2 Qd1 48.Kf2 Rc2) 45…Qe3 (45...Qe3 46.Kf1 Rc1 47.Rc1 Qc1 48.Ke2 Qe3 49.Kf1 Rd1; 45...Re3 46.Kd1 Qd6) 0-1. Akgul,Emre Ramazan (1660) - Kulaoglu,Cihan, TCh-TUR 2nd League, 2018.

11.Ne4 de4 12.Nd2 cd4 13.ed4 Bf6 (better is 13...Qc7!?=) 14.Qc2+/– Rc8 (14...Nb8 15.c5+/–) 15.Ne4 e5 (15...Be7!?+/–) 16.Nd6+– Rc7 17.Bd3 (17.Nb7 Rb7 18.Qe4 Qb8+–) 17...ed4 (17...g6 18.Nb7 Rb7 19.Ba3+–) 18.Bh7 Kh8 19.Nb7 Rb7 20.Be4 Rc7 21.Qd3 Kg8 22.Qh3 g6 23.Rad1 Rc4?! (23...Nc5 24.Bd5 Ne6+–) 24.Rd3 (better is 24.Bg6 fg6 25.Qe6 Kg7 26.Qc4+–) 24...Nc5+= 25.Ba3 (better is 25.Qf3!?+=) 25...Ne4–+ 26.Bf8 Qf8 (better is 26...Kf8 27.Re1 Nc3–+) 27.Rf3? (better is 27.Qf3 Nc5 28.Ra3-/+) 27...Nd2 (27...Ng5 28.Qg3 Nf3 29.Qf3–+) 28.Rf6 Nf1 29.Qd3 (29.Qd7 Nd2 30.Rc6–+) 29...Rc1= 30.Rg6 fg6 31.Qg6 Qg7 32.Qe8 Kh7 33.Qh5 Kg8 34.Qe8 Qf8 35.Qg6 Kh8 36.Qh5 Kg8 (36...Kg7 37.Qg5 Kh8 38.Qc1 Nh2 39.Qg5=) 37.Qg5 Qg7 (37...Kh8 38.Qc1 Nh2 39.Qg5=) 38.Qc1+/– Nh2 39.Kh2 (39.Qc4 Qf7 40.Qd4 Nf3 41.gf3 Qa2+/–) 39...Qe5= 40.Kg1 (better is 40.f4 Qb5 41.Qc8 Kf7 42.Qb7 Kf6 43.Qe4=) 40...Qd6 (better is 40...Qb5!? 41.Qc8 Kf7 42.Qc7 Ke6 43.Qa7 d3+=) 41.Qg5 (41.Qc8 Kf7+/–) 41...Kf8 (41...Kh8 42.Qh4 Kg7 43.Qg4 Kf6 44.Qf3 Kg5 45.Qd3+/–) 42.Qf5 Ke8 (42...Kg7 43.Qd3+/–) 43.Qc8 Ke7 44.Qb7 Ke6 45.Qa7 (45.Qe4 Kd7+/–) 45...d3 46.Qh7 (better is 46.Qa4!?+/–) 46...d2= 47.Qg6 Kd7 48.Qf7 Kc8 49.Qg8 Kb7 50.Qf7 Ka8 51.Qg8 Ka7 52.Qf7 Kb8 53.Qg8 Kc7 54.Qf7 Qd7 55.Qf4 Kb7 56.Qf3 Ka7 (56...Kc7 57.Qd1 Qd4 58.g3–+) 57.Qa3 (better is 57.Qd1!?+/–) 57...Kb8= 58.Qg3?? (better is 58.Qf8 Kc7 59.Qf4 Kb7 60.Qe4 Kb8 61.Qf4 Kb7=) 58...Qc7–+ 59.Qg8 Ka7 60.Qb3 Qc1 61.Kh2 d1Q 62.Qa4 (62.Qf7 Kb8 63.Qe8 Kc7 64.Qe7 Qd7 65.Qe5 Kb7 66.Qe4 Kb8 67.Qh4–+) 62...Qa4 (62...Qa4 63.g4 Qg4 64.f4 Qcg1) 0–1. DEFFM – GuestXQPN, freechess.org, 2016.

11.Ne4 de4 12.Nd2 f5 13.f4 Qc7 14.Qb3 Bd6 15.d5 e5 16.Qc3 Rf6 17.g3 Raf8 18.Qc2 Rg6 19.Kh1 Bc8 20.g4 (20.Rad1 ef4 21.ef4 Nf6=) 20...ef4=+ 21.gf5 Rf5 (21...Rh6 22.Ne4 fe3 23.Nd6 Qd6= (worse 23...Rd6 24.Qc3 Nf6 25.Qe3+/-)) 22.Ne4+= (worse 22.Qe4 Nf6 23.Bf6 Rgf6=+) 22...Be5 23.Nc3 (23.Be5!? Qe5 24.ef4 Rf4 25.Bd3+=) 23...Rfg5 24.Rg1? (better 24.ef4!? Bf4 25.Bd3=+) 24...Rg1-/+ 25.Rg1 Rg1 26.Kg1 fe3 27.Bg4 Nf6 28.Bc8 Qc8 29.Qe2 Qh3 30.Na4 Bd4 31.Bd4 cd4 32.Nb2 Ne4 33.Nd3 Nd2 (better 33...Nc3 34.Qg2 Qh5-+) 34.Ne5 (34.Ne1-+) 34...Qf5 35.Nc6 (35.a3 Qe5 36.d6 d3 37.Qd3 e2 38.Qd2 e1Q 39.Qe1 Qe1 40.Kg2 Qe4 41.Kf2 Qc4-+) 35...Nf3 (35...Qg6 36.Kh1 Qe4 37.Kg1 Nf3 38.Kf1 d3 39.Ne7 Kf7 40.Qd3 Qd3 41.Kg2 Nh4 42.Kg3 e2 43.Kh4 e1Q 44.Kg5 Qe7 45.Kg4 Qde4 46.Kh5 Q7e5) 36.Kh1 Qg4 37.Qf1 e2! (37...e2 38.Ne7 Kf7 39.Qf3 Qf3 40.Kg1 e1Q) 0-1. Bennett,Hilton - Noble,Mark, New Zealand North Island Championship NZL, 1991.

11.Ne4 de4 12.Nd2 Nf6 13.a4 Bd6 (13...cd4 14.ed4 Bb4 15.Nb3=) 14.g3 (14.dc5!? bc5 15.a5+=) 14...Qe7 15.Qb3 h6 (15...Rfd8 16.f3=) 16.Rfd1 cd4 17.Bd4 Bc5 (17...e5 18.Bc3=) 18.Bc3 White prepares the advance a5 18...Rfd8 19.a5 ba5 20.Ra5 Bb6 21.Raa1 Nd7 22.Qc2 Nc5 23.Bb4 f5 24.Nb3 Rd1 25.Rd1 Qc7 26.Nd4 (26.Bc5 Bc5 27.Nc5 Qc5+/–) 26...Qf7 27.Nb3 Nb3 (27...Qc7!?=) 28.Qb3+/– Rc8 (28...Bc7 29.c5+/–) 29.Bd6 Bc5 30.Be5 (30.Bc5 Rc5 31.Qa3 Qc7+/–) 30...Bb6 31.Qb2 Rd8 (31...Bc7 32.Bc7 Qc7 33.Qa3+/–) 32.Rd8+– Bd8 33.Qd4 Bb6 34.c5 Bc7 35.c6 Be5 36.Qe5 (36.cb7?! Qc7 37.Qa7 g6+/–) 36...Bc6?? (36...Bc8+–) 37.bc6 a5 1–0. Schwichtenberg,Juergen (1635) – Luebbers,Doris, GER–ch Seniors–B, 2008.

11.Ne4 de4 12.Ne5 Nf6 (12...cd4 13.Nd7 Qd7 14.Qd4 Qd4 15.Bd4=) 13.a4 Qc7 14.a5 Rfd8 (14...cd4!? 15.ed4 Rad8+=) 15.a6+/- Bc8 16.Nc6 Re8? (better 16...Rd6+/-) 17.dc5+- bc5 18.Be5 Qb6 19.Ne7 Re7 20.Qd6 Rd7 21.Qb6 ab6 22.Rfd1 Rd1 23.Rd1 Nd7 24.Bc7 f5 (24...Kf8 25.f3+-) 25.Rd7! Bd7 26.Bb6 Bc8 27.a7 Bb7 28.Bc5 Kf7 29.b6 (29.f4 g6+-) 29...Ke8 (29...e5 30.f3 ef3 31.Bf3+-) 30.Bd4 g6 (30...Kd7 31.c5 Kc6 32.f4+-) 31.c5 Bc6 (31...Rc8+-) 32.Bb5! Bb5 33.b7 (33.b7 Rd8 34.a8Q Bc6 35.Qd8 Kd8 36.b8Q Ke7 37.Qd6 Kf7 38.Qc7 Bd7 39.Qd7 Kf8 40.c6 e5 41.c7 ed4 42.c8Q) 1-0. DEFFM – GuestXLQL, freechess.org, 2021.

12.Rc1 Nd2 13.Nd2 a5 (13...a6 14.dc5 bc5 15.a4=) 14.a4 (14.dc5 Nc5 15.Nf3 Re8+=) 14...Rc8 (14...c4 15.e4 de4 16.Bc4=) 15.Bf3 (15.dc5 Nc5 16.Nf3 Bd6+=) 15...Nf6 (15...Bf6 16.Rc2=) 16.dc5+= Rc5 17.Rc5 (17.Qe2 Qc7+=) 17...bc5 18.Qc2 Qc7 19.e4 (19.Rc1 c4+=) 19...de4 20.Ne4 Nd5 (20...Ne4 21.Be4 Be4 22.Qe4+=) 21.Rc1 Rc8 (21...Re8 22.Qd3+=) 22.Ng3 (22.Qc4 Qd7+=) 22...Nb4 (22...c4 23.Be4 g6 24.Rd1+=) 23.Qe2 Bf3 24.Qf3 (24.gf3?! Bg5 25.Re1 Qd7=) 24...c4 (better is 24...Bd6!?+=) 25.Qg4 Do you see the mate threat? 25...g6 26.Nf5 Rd8 (26...Bc5 27.Rc4 Bf2 28.Kf2 Qc4 29.Ne7 Kf8 30.Qc8 Qc8 31.Nc8+–) 27.Ne7 (27.Rc4!? Qd7 28.Qd4 f6 29.Qd7 Rd7+–) 27...Qe7+/– 28.Qc4 Nd3 29.Qc3 Threatening mate... how? 29...Nb2 30.Qb2 Qe4 31.Qa1 h5 (31...Re8 32.Rd1+/–) 32.h3 g5 (better is 32...Qh4+–) 33.Qf6 Qd5 34.Re1 Qd2 (34...g4 35.Re5 Qd1 36.Kh2+–) 35.Re7 (35.Re7 Qd1 36.Kh2 Qd6 37.Qd6 Rd6 38.Ra7+–; 35.Re5!? Qc1 36.Kh2 Qf4 37.Qf4 gf4 38.Rg5 Kf8 39.Rh5 Ke7+–) 1–0. Ulaneo,R – Viana,J, Florida, 1992.

12.dc5 bc5 13.Qc2 f5=.

12.dc5 bc5 13.Ne4 de4=.

12.Ne4 de4 13.Nd2 cd4 14.Bd4 Nc5 (14...Bf6 15.Nc4=) 15.Nc4 (15.Rc1 Ne6 16.Bc3 Rc8=) 15...Rc8 16.Rc1 Nd3 (16...Bd5 17.Qd2=) 17.Bd3 ed3 18.Qd3 Qd5 Do you see the mate threat? 19.e4 Qb5 20.Qg3 The mate threat is Qxg7 20...Qg5 21.Qd3 (better is 21.Qg5!? Bg5 22.f4-/+) 21...Rfd8–+ 22.Rfd1 (better is 22.Qe3!?–+) 22...Ba6 With the idea Qh5 23.h4 (23.Qf1 Qg4 24.Ne3 Bf1 25.Ng4 Be2–+) 23...Qh6 (23...Qg4 24.f3 Qe6 25.Qe3 Rc4 26.Bc3–+) 24.Rc2 (24.Rc3 Qh5 (24...Bh4?! 25.Qc2–+) 25.Rd2 Qh4–+) 24...Bc5 (better is 24...Qh5 25.Rdd2 Qb5 26.h5–+) 25.Qc3 Qh4 26.Rcd2? (26.Qe3–+) 26...Bf8 (26...Be7 27.Bb6 ab6 28.Qe5 Rd2 29.Nd2–+) 27.Bf6 (27.Bg7 Bg7 (27...Rc4?! 28.Rd8 Rc3 29.Bf8 Qd8 30.Rd8=) 28.Rd8 Rd8 29.Rd8 Qd8–+) 27...Qf6 (27...Rd2!? 28.Nd2 (28.Bh4?? Rd1 29.Kh2 Rc4–+) 28...gf6 29.Qe3–+) 28.Qf6 gf6 (better is 28...Rd2!? 29.Qf3 Rd1 30.Qd1 Rc4 31.e5–+) 29.Rd8 Rd8 (29...Rc4?! 30.R1d7 Kg7 31.Ra7–+) 30.Rd8 Bc4 31.Ra8 (31.Rd7 a5 32.Rd2 Bb4–+) 31...a5 32.Rb8 b5 33.f3 a4 (33...Ba2?! 34.Rb5 a4 35.Kf2–+) 34.Kf2 (34.a3 Kg7 35.f4 Ba3–+) 34...a3 (34...Ba2?! 35.Rb5 a3 36.Ke3–+) 35.Ke3 (35.Ke1 b4–+) 35...b4 (35...b4 36.Kd4 Ba2–+; worse is 35...Ba2 36.Rb5 Be6 37.Rb8–+) 0–1. Miralles,Gilles – Kokkinos,L, Thessaloniki, 1982.

12.Ne4 de4 13.Nd2 f5 14.dc5 Nc5 15.Nb3 Qd1 16.Rfd1 (16.Bd1 Instead of 16...Nd3 17.Bd4 Bd5+=) 16...Rfd8 17.Ba3 Bd5?? (better is 17...Kf8+= was possible) 18.Nc5 (better is 18.Rd5!? seems even better 18...Rd5 19.Bc4 Rad8 20.Bc5 Bc5+–) 18...bc5 (18...Bf6 19.Rac1 Ba2 20.Nd7+–) 19.Rd5! Decoy: d5 (19.Rd5 Rd5 20.Bc4+–) 1–0. Miquel Jaureguibeitia,X (2150) – Iglesias Ojeda,F (2030), Catalunya–chT (8), 2002.

12.Ne4 de4 13.Nd2 Bf6 14.Nb3=.

12.Ne4 de4 13.Nd2 Bf6 14.Bc4=.

11.Nc3 c4 12.Rc1=.

11.Nc3 Bd6 12.Qd3 (12.dc5 bc5 13.Rc1 Re8=) 12...Re8 (12...c4 13.Qf5=) 13.Qf5 (13.dc5 bc5 14.Rac1 Qe7=) 13...c4 (13...Rc8 14.dc5 bc5 15.Rfc1=) 14.a4 Nf8 (14...Rc8 15.Ba3 Ba3 16.Ra3=) 15.Ne5 Qc7 16.f4 (16.a5 ba5 17.Rfd1 Ng6-/+) 16...Ng6 (16...Bc8 17.Qg5+=) 17.Ba3 Ba3 (17...Bc8 18.Qg5 Ba3 19.Ra3=) 18.Ra3 Rac8 19.Raa1 Qe7 (19...Ne7 20.Qg5=) 20.Rac1 (20.a5 Qb4 21.Qc2 ba5=) 20...Rc7 (20...a6 21.ba6 Ba6 22.Bf3=) 21.Qg5 (21.e4 A) worse is 21...Ne4 22.Ne4 de4 23.Bc4 Ne5 A1) 24.de5? Rec8–+; A2) 24.Qe5?? Qd8 25.Be6 Rc1 (25...Re6 26.Qc7 Qa8 27.f5+–) 26.Bf7 Kf7 27.Qh5 Kf8 28.Rc1 Qd4 29.Kf1 e3–+ (worse is 29...Qa4 30.Qh7 Qb5 31.Kg1–+); A3) 24.fe5+=; B) 21...de4 22.Nc4 Qb4-/+) 21...Qd6 (21...a6 22.ba6 Ba6 23.Rf2=) 22.Rfd1 (22.Qg3 a6=) 22...Ne7 (22...a6 23.Ng6 fg6 24.ba6 Ba6 25.Bf3=) 23.e4 de4 Black gets the initiative. 24.Bc4 (24.Nc4 Qb4+=) 24...Ned5 25.Nd5 (25.Bd5 Bd5 26.Ng4 Ng4 27.Nd5 Rd7=) 25...Bd5 26.Bd5 Nd5 27.Ng4? (better is 27.Rc7 Qc7 28.Re1=) 27...Nc3–+ (27...Nf4 28.Rc7 Nh3 29.gh3 Qc7 30.Nf6 Kh8 31.Qg7 Kg7 32.Ne8 Kf8 33.Nc7+–) 28.f5? (28.Rc3 Rc3 29.Qf5 e3–+) 28...Nd1 (28...Ne2 29.Kh1 Rc1 (29...Nc1?! 30.f6 g6 31.Qh6–+) 30.Rc1 Nc1–+) 29.Rd1 f6 (29...Rc4 30.f6 Qf8 31.fg7 Qg7 32.Nf6 Kh8 33.Qg7 Kg7 34.Ne8 Kf8 35.Nd6 Ra4 36.Ne4+–) 30.Qe3 Qb4 (30...Qb4 31.d5 Qa4–+) 0–1. Schulz,Hans_Juergen (1955) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

11.dc5 bc5 12.Qc2 Ne4 13.Nbd2 Ndf6 14.Rfc1 c4 (14...Rc8 15.Ne4 Ne4 16.a4=) 15.Bd4 (15.Nd4 Nd2 16.Qd2 Ne4=) 15...Qa5 16.a4 Bb4 (16...Rac8 17.Ne4 Ne4 18.Ne5=) 17.Ne4 Ne4 (< 17...de4 18.Ne5+/–) 18.Rab1 Nc5 (better is 18...Rfe8!?=) 19.Bc4+/– dc4 20.Qc4 Ba3 21.Bc5 Bc1 (21...Rfc8!? 22.Ba3 Rc4 23.Rc4 Rc8+/–) 22.Bf8+– (22.Rc1?! Rfc8 23.Ng5 Rc7+=; 22.Qc1?! Rfc8 23.Qc4 Bf3 24.gf3 Qd8=+) 22...Kf8 23.Qc5 Ke8 (better is 23...Kg8 24.Rc1 Qa4+–) 24.Rc1 (24...Qa4 25.Nd4+–; < 24.Qc1 Qa4 25.Nd4 Qa2+–) 1–0. van Rooijen,Peter – Karayel,Atagun, corr or02–023, 2002.

11.dc5 bc5 12.Qc2 Re8 13.Nc3=.

11.dc5 bc5 12.Nc3 Rc8=.

11.dc5 bc5 12.Nc3 Bd6=.

11.dc5 bc5 12.Nh4 Ne4+= 13.Nf5 (13.Nf3 Bf6 14.Qc2 Bb2 15.Qb2 Qf6 16.Qf6 Ndf6+= (worse is 16...gf6 17.Rc1+=)) 13...Bf6-/+ 14.Qc2 Bb2 15.Qb2 Threatening mate: Qxg7 15...Qg5 16.Ng3 Rfe8 (16...Ng3 17.hg3 Rfd8 18.Nd2+=) 17.Ne4= Re4 18.Bf3 (18.Qc2 Ree8 19.Bf3 Rab8+=) 18...Rb4 19.Qe2 a6 (19...Qf6 20.Nd2+=) 20.a3 (20.Nc3 ab5 21.a3 Rb3 22.Nb5 Bc6+=) 20...Rh4 (20...Rb5 21.Nc3 Rb6 22.Rfd1+=) 21.Nd2 Qh6 (21...c4 22.Rfb1-/+) 22.Bg4 (better is 22.h3!?+=) 22...Ne5 23.Bh3 ab5 (23...Rh3 24.gh3 Qg5 25.Kh1 d4 26.e4 Qf4+=) 24.Nf3?? (better is 24.Qb5!? Ba6 25.Qc5 Bf1 26.Qd5 Bg2 27.Bg2+=) 24...Nf3 (better is 24...Rh3 25.gh3 Qg6 26.Ng5 Qg5 27.Kh1 d4 28.e4 d3–+) 25.Qf3 Rha4 (25...Qc6 26.Rfd1–+) 26.Bd7-/+ R4a5 (26...Qb6 27.Rab1 Bc6 28.Bc6 Qc6 29.Rbd1–+) 27.Rfb1 (27.Rab1 Bc6 28.Bc6 Qc6-/+) 27...Bc6 (27...b4 28.Qg3 Bc6 29.Qc7 Bd7 30.Qd7–+) 28.Bf5 (28.Bc6 Qc6 29.Rd1 Ra3 30.Ra3 Ra3-/+) 28...b4! 29.Qg3 (29.ab4 Exploits the pin 29...Ra1) 29...g6 (29...Qf6 30.Bc2–+) 30.Bc2 (30.Qd6 R5a6 31.Bd7 Bd7 32.Qd7 Qg5-/+) 30...Qf8 31.h4 (31.Qc7 R8a6–+) 31...Ra3 32.Ra3 Ra3 (32...ba3 33.Ra1–+) 33.h5 c4 (better is 33...Qe8!?–+) 34.hg6-/+ fg6 35.Bg6 Ra7 (35...hg6 36.Qg6 A double attack) 36.Rb4?? (better is 36.Bf5! Rg7 37.Be6 Kh8 38.Qe5+=) 36...Qb4–+ (36...hg6 37.Qg6 Rg7 38.Qe6 Kh7 39.Qh3 Kg6 40.Qg3 Kf7 41.Qf4 Kg8 42.Rb8=) 37.Bf5 Kf8 38.Qe5 Be8 (better is 38...Rf7 39.Be6 Rb7 40.Kh2–+) 39.Qh8 Ke7 40.Qe5 (40.Qh7 Kf6 41.Qa7 Kf5 42.Qh7 Bg6 43.Qd7 Kf6 44.Qd5 Qe1 45.Kh2 Qf2 46.Qc6 Kg5 47.Qc4 Qe3 48.Qd5 Kh6–+) 40...Kd8 (40...Kf7 41.Be6 Kf8 42.Bd5–+) 41.Qd5 Bd7 42.Qg8 Kc7 43.Qh7 Ra1 44.Kh2 Qd6 45.g3 Rd1 (45...Qd2 46.Kg2 Ra2 47.Qd7 Qd7 48.Bd7 Kd7 49.e4–+) 46.Qg7 (46.Kg2 Rd2 47.Bd7 Qd7–+) 46...Kb6 (46...Qd5 47.e4 Qc5 48.Kg2–+) 47.Qb2 Bb5 (better is 47...Kc6 48.Be4 Kc7 49.Qh8–+) 48.Qg7 (48.Kg2 Qh6 49.Kf3 Qh1 50.Kg4 Qe1–+) 48...Rd5 (48...Rd2 49.Kg2 Qc6 50.Kh3–+) 49.Be4 (49.e4 Rc5 50.Qc3 Bd7 51.Bd7 Qd7–+) 49...Rh5 50.Kg2 Bc6 51.Qb2 (51.Bc6 Qc6 52.f3 c3 53.Qd4 Rc5 54.Qd8 Ka6–+) 51...Rb5 52.Qc2 Be4 (52...Qd3 53.Qd3 cd3 54.Bc6 Kc6 55.Kf3–+) 53.Qe4 Qc6 (53...Qc6 54.Qc6 Kc6–+) 0–1. Rohrbacher,Walter – Oelze,Joern, Baden–ch Sen, 2002.

11.Nbd2 c4 12.Qc2=.

11.Nbd2 Re8 12.Qc2 Rc8 (12...c4 13.a4=) 13.Qa4 Qc7 14.Rac1 (14.Qa7?? Ra8 15.Qa8 Ra8 16.dc5 bc5–+) 14...Bd6 (14...c4 15.Ba3= (15.Qa7?? Ra8 16.Qa8 Ra8–+)) 15.h3 (15.Bd3 c4 16.Bf5 a6 17.ba6 b5+=) 15...c4 16.Ba3 (16.Qa7?? Ra8 17.Qa8 Ra8–+) 16...Ba3 (16...Ra8 17.Bd6 Qd6 18.Nb1+=) 17.Qa3= Qb8 (17...Ra8 18.Qb4=) 18.Nh4 g6 19.Nb1 (19.Rc3 h6+=) 19...Ne4 (19...Qa8 20.Nf3=) 20.Nf3 a6 (20...Qa8 21.Nfd2=) 21.ba6+= Bc6 22.Nc3 (22.Nfd2 Nd2 23.Nd2 b5+=) 22...Nc3 (22...Qa7 23.Ne4 de4 24.Nh2+=) 23.Rc3 Qa7 24.Rb1 Ra8 25.Qd6 Re6 26.Qf4 Qa6 27.a3 Qa5 28.Rb4 b5 (28...Rae8 29.Qh6 f6 30.Nd2=) 29.Ng5+/– Threatening mate: Qxf7 29...Rf6 30.Qh4 Nf8 31.Ne4 Re6 32.Nf6 (32.Nc5 Ree8+=) 32...Kg7 33.Ng4 Qd8 (33...Nd7 34.Qh6 Kh8 35.Qf4+=) 34.Qd8= Rd8 35.Ne5 Be8 36.Nf3 (36.Bg4 Ra6-/+) 36...Ra6 37.Ne1 Ne6 38.h4 Rda8 39.Nc2 Nc7 40.Bg4 h5 41.Bf3 (41.Bh3 Rd6+=) 41...Bd7 42.e4 de4 43.Be4 Re8 (43...Bc6 44.Re3-/+) 44.Bb7 (44.Re3 Kf6+=) 44...Ra7 (44...Rd6 45.a4+=) 45.Bf3 Bf5 (45...Kf6 46.Kf1+=) 46.a4 (46.Bc6 Rd8 47.Ne3 Bd7+=) 46...Bc2 47.Rc2 Re1 48.Kh2 ba4 The passed pawn on a4 will quickly become a dangerous weapon 49.Rbc4 a3 50.Ra2 (50.Rc7 Rc7 51.Rc7 a2+=) 50...Rb1 51.Bc6 (51.Be4 Rb3+=) 51...Rb3 52.g3 Kf6 (52...Rb2 53.Rb2 ab2 54.Rb4=) 53.Be4 (53.Kg2 Ke7-/+) 53...Nb5-/+ 54.Bc2 Rc3 55.Rb4 Nd6 56.Rb6 (56.Ba4 Nc4-/+) 56...Ke7 57.Bb3 Kd7 (57...Rd3 58.d5-/+) 58.Rb4 Kc7 (58...f6 59.Kg2-/+) 59.Re2 (59.Kg2 Rb7 60.Rb7 Kb7 61.Bd5 Kb6-/+) ½–½. Michel,Klaus – Nurminen,Jorma, corr ICCF Cup8 V078, 1990.

10.Nc3 Nc3 11.Bc3 Nd7 (11...a6 12.dc5 Bc5 13.Bd4=) 12.Rc1 cd4 (12...a6 13.cd5 Bd5 14.ba6+=) 13.Bd4 (13.Qd4 Bf6 14.Qg4 Bc3 15.Rc3 Nf6=) 13...dc4 14.Bc4 Ba3 (14...a6 15.a4+=) 15.Rc3 Qe7 16.Ne5 (16.Qd3 Bb4 17.Rc2 Bf3 18.gf3 Nc5=) 16...Ne5 17.Be5 Bb2 (17...Qg5 18.f3 Rfd8 19.Bf4=) 18.Qg4= g6 19.Be6?? (better is 19.Rfc1=) 19…Bc3–+ (20.Bf7 Qf7 21.Bc3 Qa2+=; 19...Qe6?! 20.Qe6 fe6 21.Rc7 Be5 22.Rb7–+; 19...fe6 20.Rc7 Bf3 A) 21.Re7?! Bg4 22.Rg7 Kh8 23.Bb2 h5+–; B) 21.Bb2?! Qc7 (< 21...Bg4 22.Re7 Rf7 23.Rf7 Kf7 24.Rc1+/–) 22.Qe6 Rf7 23.gf3 Qc5=; C) 21.gf3 Qc7 22.Bc7+–). Weigel,Hans Juergen (2000) – Nietsch,Horst (2085), GER–chT Seniors MM–dLV, 2001.

10.Nbd2 a6 11.cd5 Qd5 12.Ne4 Qe4 13.Bd3=.

10.Nbd2 Nd2 11.Nd2 Nd7 12.a4 Bf6 13.Bf3 Qc7 14.cd5 ed5 15.Qb3 c4 16.Qc2 Be7 17.e4 Nf6 (17...Rfc8 18.Rfc1=) 18.ed5+= Bd5 (18...Rfc8 19.Rac1+/-) 19.Bd5+/- Nd5 20.Qc4 (20.Nc4?! Rac8 21.Rac1 Bg5=+) 20...Qc4 21.Nc4 Rac8 22.Ne5 Rc2 23.Rab1 Nf6 (23...Bg5!?+/-) 24.Rfc1+- Rd2 (24...Rc1 25.Rc1 Nd5 26.Nc6+-) 25.Nc6 (25.Rc7!? Bd6 26.Ra7 Bb8+-) 25...Bd6+/- 26.Na7 Ne4? (better 26...Ng4 27.h3 Nf2+-) 27.Nc8 Bf4 28.Rc6 (28.Nb6?! Rb2 29.Rb2 Bc1+/-) 28...Rf2 29.Bc1 (29.Nb6?! Be3 30.Kh1 Nd2+-) 29...Nd2 (29...Bb8 30.Nb6 Ra2+-) 30.Kf2 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

10.Nbd2 Nd7 11.Ne4 de4 12.Ne5 Nf6 13.a4 Qc7 14.a5 Rfd8 15.a6 Bc8 16.Nc6 Re8 17.dc5 bc5 18.Be5 Qb6 19.Ne7 Re7 20.Qd6 Rd7 21.Qb6 ab6 22.Rfd1 Rd1 23.Rd1 Nd7 24.Bc7 f5 25.Rd7 Bd7 26.Bb6 Bc8 27.a7 Bb7 28.Bc5 Kf7 29.b6 Ke8 30.Bd4 g6 31.c5 Bc6 32.Bb5 Bb5 33.b7 1-0. DEFFM – GuestXLQL, freechess.org, 2021.

10.Nbd2 Bf6 11.cd5 Bd5 12.Ne4 Be4 13.Nd2 Bb7 14.Bf3 Bf3 15.Qf3 Nd7 16.Ne4 cd4 17.ed4 (17.Rfd1 a6+=) 17...Rc8 (17...a6 18.a4=) 18.Rac1 Qe7? (better is 18...Rc1 19.Rc1 Be7+=) 19.Ba3+– (19.Ba3 Rc1 20.Rc1+– (20.Be7?! Rf1 21.Kf1 Be7+–); 19.Nf6?! Qf6 (worse is 19...Nf6 20.Ba3 Qd7 21.Bf8 Rf8 22.Qd3+–) 20.Qf6 Nf6=) 1–0. DEFFM – GuestSLBS, freechess.org, 2018.

9.a4 Nbd7 10.d3 Qc7 (10...a6 11.Nc3=) 11.Nbd2 (11.Nc3 e5=) 11...a5 (11...a6 12.Qb3=) 12.Re1 Rfe8 13.Nf1 (13.Rb1 e5=) 13...Nf8 (13...Rad8 14.Qc2=) 14.e4 Ng6 15.Ne3 Nd7 (15...Nf4 16.Qc2=) 16.g3 (16.Ra2 Bf6=) 16...Bf6 17.Ra2 (17.Qc2 Rad8=) 17...Rad8+= 18.Bf1 Bb2 19.Rb2 Ndf8 (19...d5 20.ed5 ed5 21.cd5=) 20.Ng5 (20.Bg2 Ne5=) 20...e5 (20...h6 21.Nh3+=) 21.Nf5 (21.Qh5 h6 22.Nf3 Nd7=) 21...f6 (21...Nd7 22.Qf3 h6 23.Nh6 Kh8 24.Nhf7 Kg8 25.Nd8+–) 22.Nf3 Ne7 23.N3h4 (23.Bh3 Nf5 24.Bf5 Ne6=) 23...Ne6 24.f3 (24.Ne7 Re7 25.Nf5 Ree8=) ½–½. Gardner,PK – Bagnall,P Roy, BPCF Open P263, 1993.

9.Nc3 Nbd7 10.Qb3 Re8 (10...Ne5 11.Ne1=) 11.Rac1 (11.Qc2 Qc7=) 11...Qc7 (11...Ne5 12.Ne1=) 12.Rfd1 (12.d4 h6=) 12...Rad8 (12...Ne5 13.Ne5 de5 14.d3=) 13.d4 cd4 14.ed4 Nf8 15.Na4 (15.g3 N8d7=) 15...Ng6 16.Ba3 White prepares the advance c5 (16.g3 h5=) 16...Nf4 17.Bf1 Qb8 (17...Ne4 18.Qe3 e5 19.g3=) 18.c5 (better is 18.g3!? Qa8 19.Nd2+=) 18...dc5+= 19.dc5 Bd5 (better is 19...Rd1 20.Rd1 bc5 21.Bc5 Bd5=) 20.Bc4?? (better is 20.Qc3 bc5 21.g3+=) 20...Ne2!!–+ 21.Kh1 (21.Be2 Bb3 Pinning (21...Bb3 Deflection)) 21...Nc1 (better is 21...Ng4 22.g3 Nf2 23.Kg2 Nd1 24.Rd1 Bf3 25.Kf3 Nd4 26.Rd4 Rd4 27.Bb2 bc5 28.Bd4 cd4 29.Qd3–+) 22.Rc1 bc5 23.Nc5 (23.Bc5 Ng4 24.g3 Qb7 25.Bd5 Rd5 (25...ed5?! 26.Bd4–+; 25...Qd5? 26.Qd5 ed5 27.Ba7-/+) 26.Be7 Rd3–+ (26...Re7?! 27.Kg2–+; 26...Qe7?! 27.Kg2–+)) 23...Rc8 (23...Qb6 24.Bd5 Rd5 25.Na4 Qb5 26.Qb5 Rb5 27.Be7 Re7 28.a3–+) 24.Bd5 Nd5 (24...ed5 25.h3–+) 25.Nd4 (better is 25.Rc2–+) 25...Qf4 26.Nc6 Bc5 27.Rc5 Qf2 28.Rc1 (28.Qb1 Qe3 29.Qc1 Qe2–+) 28...a6! 29.Bb2 (29.ba6 Rc6 Decoy) 29...ab5 30.Qb5 h6 31.a4 (31.Rf1 Qd2 32.Ba3 Ne3–+) 31...Nf4 32.Rg1 e5! 33.Qb7 (33.Be5 Rc6 Decoy; 33.Ne5 Rb8 Combination) 33...Kh8 (better is 33...Qc2 34.Ne5 f6–+) 34.Ne5 f6 (34...Rc5 35.Nf3 Rd8 36.Qf7 Qb2 37.Qf4–+) 35.Nf7-/+ Kh7 36.Bf6 Nh5 (36...gf6?! 37.Nd8 Kh8 38.Qc8=) 37.Qb1 (37.Be5 Rf8 38.Qe4 g6–+) 37...Qc2 38.Qc2? (better is 38.Bd4!?-/+) 38...Rc2–+ 39.Bd4 (39.Ba1 Re4–+) 39...Re4 40.Ba1 Ra4 41.Ne5 (41.Nd6 Ra5 42.Rf1 Raa2–+) 41...Nf4 42.Ng4 (42.Nf3 Rg2! 43.Rg2 Ng2 (43...Ra1?! 44.Rg1 Ra4 45.Rd1-/+) 44.Bg7 Nh4 (worse is 44...Kg7 45.Kg2 Kf6 46.Kg3–+) 45.Nh4 Kg7–+ (45...Rh4?! 46.Bf8–+)) 42...Rg2! 43.Rg2 Ng2 (43...Ng2 44.Kg2 Ra1–+; 43...Ra1?! 44.Rg1 Ra3 45.Ne5-/+) 0–1. Isotov,Sergey – Savatyev,Alexander (2170), Staraya Russa RUS, 2012.

9.Nc3 Nbd7 10.d4 (10.Qc2 a6=) 10...Qc7 (10...cd4 11.Nd4 Qc7 12.Nb1=) 11.Nd2 (11.d5 Ne5+=) 11...Rfe8 (11...cd4 12.ed4 d5 13.Rc1+=) 12.Bf3 (12.dc5 Nc5 13.Nb3 Red8=) 12...Bf8 (12...cd4 13.ed4 d5 14.cd5 Nd5 15.Nd5 Bd5 16.Bd5 ed5 17.Qb3=) 13.Rc1 (13.Re1 d5=) 13...e5 (13...d5 14.cd5 ed5 15.dc5 bc5 16.Nb3=) 14.Bb7+= Qb7 15.d5 g6 (15...a6 16.e4+=) 16.Nce4 (16.Qf3 a6+/–) 16...Ne4+= 17.Ne4 h6 (17...a6 18.Nc3+=) 18.Qg4+= Kg7 19.f4?? (better is 19.Nc3+=) 19...f5–+ 20.Qh4 (20.Qf3 fe4 21.Qe4 a6 22.ba6 Ra6–+) 20...Be7 (20...fe4!? 21.f5 Nf6 22.fg6 Be7–+) 21.Qf2-/+ fe4 22.fe5 Rf8 (worse is 22...Ne5 23.Qf7 Kh8 24.Be5 de5 25.d6+/– (worse is 25.Qg6 Bg5 26.Qe4 Qh7 27.Qh7 Kh7-/+)) 23.e6 Nf6 24.Qh4 a6 25.Rc2 (better is 25.ba6 Ra6 26.a3-/+) 25...Qc7 (25...ab5 26.Rcf2 g5 (26...bc4?? 27.Bf6 Bf6 28.Rf6+–) 27.Qe4 Qc8 28.cb5 Qe8=) 26.Rcf2= Qd8 27.ba6 Ra6 28.a3 (28.Qe4! Ra7 29.Qd3=) 28...Ra4+= 29.Qf4? (better is 29.Qe4! b5 30.Qb1 Rc4 31.Bf6 Rf6 32.Rf6 Bf6 33.Qb5=) 29...Rc4–+ 30.h4 0–1. Liptak – Csurie, 1996. (=1.Nf3 Nf6 2.b4 e6 3.b5 c5 4.e3 b6 5.Bb2 Bb7 6.c4 Be7 7.Be2 0-0 8.0-0 d6)

9.Nc3 e5 10.d3 (10.d4 Nbd7+=) 10...Nbd7 (10...a6 11.ba6 Ra6 12.d4 cd4 13.ed4=) 11.a4 (11.Nd2 a6+=) 11...Qc7 (11...a6 12.Qb3=) 12.Ne1 (12.Nh4 d5+=) 12...d5= 13.cd5 Nd5 14.Nd5 Bd5 15.Bf3 Bf3 16.Nf3 Bd6 (16...a6 17.Qc2=) 17.e4 (17.Qc2 a6=) 17...Nf6 18.Rc1 (18.Qe2 a6=) 18...a6 19.ba6 Ra6 20.Rc4 Nd7 (20...Rd8 21.Qb3=) 21.d4 ed4 (21...Rfa8 22.de5 Be5 23.Ne5 Ne5 24.Be5 Qe5 25.Qb3=) 22.Bd4 Ne5 23.Ne5 (23.Be5 Be5 24.Qd5 Re8=) 23...Be5 24.Be5 Qe5 25.f4 Qe7 26.Rf3 (26.Qb3 Rfa8=) 26...Rd8 27.Rd3 Do you see the mate threat? 27...Rd3 (27...Raa8 28.e5=) 28.Qd3 Ra8 29.Qb3 (29.e5 Rd8 30.Qf3 Qd7=) 29...Qd6 (29...Rd8 30.h3 (30.Qb6 Rd1 31.Kf2 Qh4 32.Kf3 Rf1 33.Ke2 Qf2 34.Kd3 Rd1 35.Kc3 Qd2 36.Kb3 Rb1 37.Ka3 Rb6 38.a5 Qb2 39.Ka4 Qb3) 30...Qf6 31.e5=) 30.e5 Qd5 31.Qf3 (31.Qc2 Rd8=) 31...Qf3 32.gf3 f5 (32...Rd8=) 33.ef6 (33.Kf2!?=) 33...gf6 (33...g6 34.f5-/+) 34.Kf2 (34.f5 Kg7+=) 34...f5-/+ 35.Ke3 Kf7 36.Kd3 Ke6 37.Kc3 (37.Ke3!?-/+) 37...Kd5–+ 38.Kb3 (38.Kd3 Ra5-/+) 38...Re8 39.Rc3 Kd4 (39...Kd4 40.Rc4 Ke3-/+; 39...Re2!? 40.h3–+) 0–1. Brzoza,Miroslaw – Marcinkowski (2200), corr Poland, 1981.

9.d3 Nbd7 10.c4 d5 11.Qc2 h6 12.Nbd2 Re8. pcmvr (2225) – kostaspetidis (2140), net–chess.com, 2006.

9.d4 a6=.

9.d4 Nbd7 10.a4 d5 11.Nbd2 Qc7 12.Ne5 Ne5 13.de5 Nd7 14.f4 (14.cd5 ed5 15.Bd3 a6=) 14...Rfd8 (14...a6 15.cd5 ed5 16.Nf3+=) 15.Qc2 f6 (15...a6 16.cd5 ed5 17.Bd3=) 16.ef6 (16.cd5!? ed5 17.Bd3+=) 16...Bf6= (worse is 16...gf6 17.cd5 ed5 18.Bd3+/–) 17.Rf3 (17.Bf6 Nf6 18.a5 ba5=) 17...Bb2+= 18.Qb2 d4 19.Rg3 (19.e4 Rf8+=) 19...e5 20.ed4 (20.fe5 Qe5 21.Re1 d3 22.Qe5 Ne5+=) 20...cd4 (20...ed4 21.Rf1+=) 21.Re3?? (better is 21.fe5 Ne5 22.Bd3+=) 21...de3–+ (21...de3 22.Nb3 ef4–+) 0–1. Lozinski,Jozef (1800) – Brzoza,Miroslaw (2200), corr 1AMM Poland, 1991.

8.0-0 0-0 9.d4 Nbd7 (--> 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

8.0-0 dc4 9.Na3 0-0 10.Nc4 Nbd7 11.Qc2 Qc7 12.Nfe5 Ne5 13.Ne5 Bd6 14.f4 Rad8 15.Rac1 Nd5 16.Bd3 h6 17.Qb1 Nb4 18.Bh7 Kh8 19.a3 Nd5 20.Nc4 Be7 21.Be4 Nf6 22.Bf3 (22.Be5 Qd7 23.Bb7 Qb7+=) 22...Rd7 (22...Bf3!? 23.Rf3 Qd7=) 23.Be5+= Qc8 24.Qc2 Rfd8 25.Bc3 Bd5 (better is 25...Kg8!?+=) 26.Ne5+– 1–0. usingprogram – soldado767, internet, 2011.

8.0-0 dc4 9.Bc4 0-0 10.d4 cd4 (10...a6 11.dc5 Bc5 12.Qe2=) 11.Nd4 Nbd7 (11...a6 12.Qe2=) 12.Nc6+= Bc6 13.bc6 Nc5 (13...Qc7 14.Bb5 Nc5 15.Qc2-/+) 14.Be2 (14.Qd8 Rfd8 15.Nc3 Rac8+=) 14...Qc7+= 15.Bf3 Rad8 16.Qc2 Rd6 (better is 16...Nd5+=) 17.Be5 Rd2?? (better is 17...Nd5+/–) 18.Qc5+– (18.Bc7?! Rc2 19.Na3 Rd2+/–) 18...Bc5 (18...Bd6 19.Qb4!+–) 19.Bc7 Rd3 (19...Rc2 20.Be5+–) 20.Be5 Be7 (20...Rc8 21.Nc3 a6 22.Rfd1 Rd1 23.Rd1+–) 21.Nc3 Bb4 22.Nb5 a6 23.Nd4 (23.Na7 Nd5 24.c7 Ne7+–) 23...Bc5 (23...Rc8 24.Be2 Ra3 25.Nc2+–) 24.Nb3 Rb3 (24...Bd6 25.Bd4 Rc8+–) 25.ab3 a5 26.Rfd1 h6 (26...Ne8 27.Rd7+–) 27.Bf6 gf6 28.c7 Kg7 29.Rd8 1–0. DEFFM – GuestGWNN, freechess.org, 2018.

8.0-0 Nbd7 9.Qc2 Qc7 (9...dc4 10.Bc4 Bf3 11.gf3=) 10.d3 (10.cd5 ed5 11.d4 Rc8=) 10...Bd6 (10...dc4 11.Qc4 0-0 12.Nc3=) 11.Nbd2 h6 (11...0-0 12.cd5 ed5 13.Rfc1=) 12.a4 (12.cd5 ed5 13.Rfb1 0-0=) 12...g5 (12...0-0 13.a5=) 13.g3 (13.h3 Rg8+=) 13...Rg8 (13...e5 14.cd5 Bd5 15.Nc4+=) 14.a5 Rb8 (14...ba5 15.Nb3=) 15.ab6 (15.cd5 Nd5 16.Nc4 Nb4+=) 15...ab6 16.d4 (16.cd5 Nd5 17.Nc4 g4+=) 16...h5 (16...g4 17.dc5 bc5 18.Nh4+=) 17.dc5 (17.cd5 Nd5 18.Nc4 h4+=) 17...bc5 18.Rfb1 (18.cd5 Nd5 19.Nc4 g4+/–) 18...Ke7 (18...h4 19.cd5 hg3 20.fg3 Nd5 21.e4=) 19.Bc3 (19.cd5 ed5 20.b6 Qd8+=) 19...h4 20.Ba5 (20.cd5 hg3 21.fg3 Nd5+=) 20...Qc8 (20...Nb6 21.cd5 hg3 22.hg3 ed5 23.Bc3=) 21.Bc3 (21.cd5 hg3 22.hg3 ed5=) 21...hg3 (21...Qc7 22.Bf6 Nf6 23.cd5 hg3 24.fg3 Nd5 25.e4=) 22.hg3 Black gets strong play along the open h–file 22...Qf8 23.cd5 Nd5 (better is 23...ed5 24.Ra7 Qh6=) 24.Ne4 (better is 24.Bb2!?=) 24...Nc3-/+ 25.Nc3 Qh6 26.e4 Rh8 Threatening mate: Qh1 27.Kf1 Qh1 28.Ng1 Ne5 29.Qd1 Be4 (29...c4 30.Rb2-/+) 30.Ne4 Qe4 31.Ra6 (31.Ra7 Kf6-/+) 31...Qd5 32.Ra7 Kf6 33.Ra6 Qd1 34.Rd1 Bc7 35.f4 gf4 36.gf4 Ng6 37.f5 Ne5 (37...Kf5 38.Rd7 Bb6 39.Rf7 Ke4 40.Bf3 Kd3 41.Rd7 Kc4 42.Be2 Kb4 43.Rd6 Rbf8 44.Ke1-/+) 38.fe6 fe6 39.Rc1 Bb6 (39...c4 40.Rc4 Nc4 41.Bc4–+) 40.Rc3-/+ Ke7 (40...Rh4 41.Nf3 Rb4 42.Nd2-/+) 41.Nf3 Nf3 42.Bf3 Rhd8 (42...Rh2 43.Bg2-/+) 43.Bc6 (43.Ke2 Rd4-/+) 43...Rd4 44.Ke2 Kd6 45.Rd3 (45.Ra2 e5-/+) 45...c4 Black fights for the Initiative 46.Rd4 Bd4 47.Ra8 (47.Be4 Kc5 48.Re6 Kb5-/+ (48...Rb5?! 49.Rc6 Kb4 50.Rc4 Kc4 51.Bd3 Kc3 52.Bb5=)) 47...Rb6 48.Rd8 (48.Be8 Kc5 49.Ra6 Kb4-/+ (49...Rb5?! 50.Bb5 Kb5 51.Re6=)) 48...Kc5–+ 49.Kd2 e5 50.Re8 (50.Rd5 Kb4 51.Kc2 c3–+) 50...Rc6 (50...Rb5 51.Bb5 Kb5 52.Rb8 Kc5 53.Rd8–+) 51.bc6 Kc6 52.Kc2 Kd5 53.Rd8 Ke4 54.Rc8 (54.Rh8 c3–+) 54...c3 55.Re8 (55.Rh8 Ke3–+) ½–½. Kjaerstad,Eivind J – Helgeland,Arnfinn, corr Norway, 1971.

8.a4 Nbd7 9.0-0 0-0 10.a5 h6 11.a6+= Bc8 12.d4 dc4 13.Nbd2 cd4 14.Nd4 (14.Bc4?! de3 15.fe3 Nc5=; 14.Nc4?! de3 15.fe3 Nc5=) 14...Nc5 (14...c3 15.Bc3 Nd5 16.Bb2+/-) 15.Nc6 Qe8 16.Nc4 Bd7 (16...Nd5 17.Be5+/-) 17.Bf6+- (17.Ne7?! Qe7 18.Qd6 Qd8+/-) 17...Bf6? (better 17...gf6 18.Bf3 Rb8+-) 18.Nd6 (18.Nd6 Bc6 19.Ne8 Be8 20.Rc1+-) 1-0. DEFFM – SPSPSPSPSP, freechess.org, 2021.

8.d4 0-0 9.Nbd2 dc4 10.Bc4 cd4 11.ed4 Bb4 12.0-0 Ne4 (12...a6!?=+) 13.Ne4= Be4 14.Qb3 Qe7 15.d5 ed5 16.Bd5 Bd5 17.Qd5 Nd7 18.Bg7?? (better 18.a3 Ba5 19.Nd4+/-) 18...Nf6?? (better 18...Kg7 19.Nd4 Qe8=+) 19.Bf8+- Qf8 (19...Nd5 20.Be7 Be7 21.Rac1+-) 20.Qf5 Qg7 21.Rac1 Bc5 22.Ne5 Rd8 (22...Re8+-) 23.Rc3 Rd5 (23...Kf8 24.Rg3 Qh8+-) 24.Rg3 Qg3 25.hg3 Rd6 26.Qc8 Kg7 27.Qc7 (27.Qc7 Ng8 28.Qf7 Kh8 29.Qf8+-) 1-0. onur604 (2320) - Kentyara (2185), Casual Rapid game, lichess.org, 2021.

8.d4 cd4 9.ed4 dc4=+ 10.Bc4 0-0 11.Nbd2 (11.0-0 a6=+) 11...Nd5 (11...a6 12.0-0=+) 12.0-0 Nd7 (12...a6 13.Qc2=+) 13.a4 (13.Re1 N7f6=) 13...Rc8 14.Qb3 N7f6 (14...Nf4 15.Rac1=+) 15.Ne5 (15.Rfc1 Re8=) 15...Bb4 (15...Re8 16.f3=+) 16.Ndf3= Bd6 (16...Qd6 17.Ba3=) 17.Rfc1 Ne4 (17...Nf4 18.Ba3=) 18.Bd3 f5 (18...Rc1!? 19.Bc1 Nb4=) 19.Rc8+= Qc8 20.Nc4 (20.Ba3 Ba3 21.Qa3 Qc3+=) 20...Qd7 (20...Bc7 21.Ba3 Rf6 22.Be4 fe4 23.Nfe5+=) 21.Nfe5 Be5 22.Ne5 (22.de5?! Nc5 23.Qd1 Nf4=) 22…Qe8 1–0. GuestWLNY – GuestKWRM, freechess.org, 2020.

8.d4 cd4 9.Bd4 0-0 10.0-0 dc4 11.Bc4 (11.Nbd2 a6 12.ba6 Na6 13.Nc4 b5=) 11...Nbd7 (11...a6 12.Qe2=) 12.Nbd2 (12.Qe2 Qc7=) 12...Rc8 (12...a6 13.a4=) 13.Qa4 (13.Qe2 Bd6=) 13...Nc5 (13...e5 14.Bb2=) 14.Qc2 (14.Qa7?? Ra8 15.Qa8 Qa8–+) 14...Nce4 (14...Nfe4 15.Rac1=) 15.Ne4 (15.Rfd1 Qd6 16.Ne4 Be4=) 15...Be4 16.Qb3 (16.Qa4 Bf3 17.gf3 Bc5=) 16...Bf3 17.gf3 Qc7 (17...Bc5 18.Rad1 Bd4 19.Rd4=) 18.Rac1 Qb7 19.e4 Nd7 20.Rfd1 Nc5 (20...Bg5 21.Rc2=) 21.Qc3 (21.Qe3=) 21...f6 (21...Na4!? 22.Qd2 Rcd8=) 22.Bc5+/– Rc5 23.Be6 Kh8 24.Qd3 (24.Qb3 Rc1 25.Rc1 Qb8+/–) 24...Rg5 (24...Qb8 25.a4+/–) 25.Kh1+/– Bc5 (better is 25...Qb8!?+/–) 26.Qd8+– h5?? (better is 26...Qb8 27.Qb8 Rb8+–) 27.Rc5! Rd8 (27...bc5 28.Qf8 Remove defender; 27...Rc5 28.Qf8 Remove defender) 28.Rd8 Kh7 29.Rg5 fg5 30.Bf5 g6 31.Rd7 Qd7 32.Bd7 1–0. GuestGSQL – Guestxxx, freechess.org, 2018.

8.d4 Nbd7 9.Nc3 (better is 9.cd5 Nd5 10.dc5 bc5 11.Nc3=) 9...Ng4 (9...dc4 10.dc5 Nc5 11.Bc4=) 10.0-0 (10.cd5 ed5 11.dc5 Nc5+/–) 10...Bf6 (10...dc4 11.Bc4 Bd6 12.dc5 Nc5 13.h3 Bf3 14.Qf3= (< 14.gf3 Nh2-/+)) 11.h3 Qc7? (better is 11...Nh6+/–) 12.hg4+– 0-0? 13.g5 Be7 14.dc5 Qc5 15.Qb3 Qd6 16.a4 Nc5 17.Qc2 dc4 18.Rad1 Qc7 19.Rd4 e5 20.Rg4 Rfd8 21.Bc4 Bd6 22.Nh4 Rac8 23.Nf5 Bf8 24.e4 Rd7 25.f4 g6? 26.Nh6 Bh6 27.gh6 Na4 28.Bf7 Rf7 29.Qa4 Qc5 30.Kh2 Qf8 31.Rh4 g5 32.Rh3 gf4 33.Qb3 a5 34.Nd5 Qd6 35.Ba3 Bd5 36.ed5 Qf6 37.Rh1 e4 38.Bb2 Qg5 39.d6 Qg4 40.Rd1 e3 41.Qd5 e2 42.Re1 Re8 43.Bf6 a4 44.Be7 Qd7 45.Re2 Rc8 46.Qg5 Kh8 47.Rf3 Qf5 48.Qh4 Ra8 49.Rc3 f3 50.gf3 Qf4 51.Qf4 Rf4 52.d7 Rd8 53.Bd8 Kg8 54.Rg2 Kf7 55.Bf6! Rd4 56.d8Q Rd8 57.Bd8 Ke6 58.Rg7 Ke5 59.Bc7 Kd4 60.Rc1 Kd5 61.Rh7 a3 62.Re7 a2 63.h7 a1B 64.Rc6 Be5 65.Re5 Kd4 66.h8Q Kd3 67.Qd8 1–0. NN – CapablancaStyle ChessMast, 1991.

8.cd5 Bd5 9.Nc3 Bb7 10.0-0 0-0 11.Qc2 Nbd7 (11...a6 12.Rfd1=) 12.Rfd1 Qc7 13.d4 cd4 14.Nd4 Rac8 15.Rac1 Nc5 16.Bf3 Bf3 17.Nf3 h6 (17...Rfd8 18.Rd8 Rd8 19.Na4=) 18.Na4+= Qb7 19.Nc5 Rc5 20.Qb3 (20.Qe2 Ra8+=) 20...Rfc8= 21.Rc5 bc5 22.a4 a6 23.Qc4 ab5 24.ab5 Rb8 25.Bf6 Bf6 26.Rb1 Qb6 27.Nd2 Rd8 28.Ne4 Exerts pressure on the isolated pawn (28.Qc2 Ra8+=) 28...Be7= 29.g3 Bf8 30.Rc1 Rb8 31.Rb1 (31.Nc5? Rc8 (31...Qb5?! 32.Qb5 Rb5 33.Nd7=) 32.Qa4 Bc5–+) 31...Rd8 32.Nc3 1–0. GuestDWBQ – GuestBZGT, freechess.org, 2017.

8.cd5 Nd5 9.0-0 0-0 10.d4=.

8.0-0 a5 9.Na3 A) 9...Nbd7 10.Qa4 (10.d3 0-0 11.Qa4 d5 12.Rac1 Bd6 13.cd5 ed5 14.Nc2 Qe7=; 10.Qc2 0-0 11.d3 d5 12.Rac1 Bd6 13.cd5 ed5 14.Nb1 Qe7=; 10.Nc2 0-0 11.d4 cd4 12.Qd4 Nc5 13.Rad1 Qc7 14.Qf4 e5=) 10...0-0 11.d3 d5 12.Rac1 Bd6 13.Rfd1 Qc7 14.cd5 ed5=; B) 9...d5 10.Ne5 (10.d4 0-0 11.Rc1 Nbd7 12.Qd2 Ne4 13.Qc2 Rc8 14.Bd3 cd4=; 10.Rc1 0-0 11.d4 Nbd7 12.Qd2 Ne4 13.Qc2 Rc8 14.Bd3 cd4=; 10.Qa4 0-0 11.Rfd1 Nbd7 12.Rac1 Rc8 13.cd5 Bd5 14.Nc4 Qc7=) 10...0-0 11.d3 Qd6 12.f4 Nfd7 13.Bf3 Bf6 14.d4 Rd8+=; C) 9...0-0 10.d3 (10.Qa4 Nbd7 11.d3 d5 12.Ne5 Ne5 13.Be5 Nd7 14.Bg3 Bf6=; 10.d4 Nbd7 11.Nc2 cd4 12.Qd4 Nc5 13.Rad1 Qc7 14.Qf4 e5=; 10.Qc2 Nbd7 11.d3 d5 12.Rac1 Bd6 13.cd5 ed5 14.Nb1 Qe7=) 10...Nbd7 11.Qa4 d5 12.Rac1 Bd6 13.Rfd1 Qc7 14.cd5 ed5=.

8.0-0 a5 9.Nc3 A) 9...Qc7 10.e4 (10.Qc2 0-0 11.e4 Rd8 12.Rae1 Nbd7 13.Ng5 h6 14.Nf3 Ne5=; 10.d4 cd4 11.Qd4 Nbd7 12.Qf4 Nc5 13.Rad1 0-0 14.Rd2 a4=; 10.d3 0-0 11.Qa4 Nbd7 12.Rad1 Rad8 13.Rfe1 d5 14.cd5 Nd5=) 10...0-0 11.Qc2 Rd8 12.Rae1 Nbd7 13.Ng5 h6 14.Nf3 Re8=; B) 9...0-0 10.Qc2 (10.d3 Nbd7 11.Qa4 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.Qa4 Nbd7 11.d3 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.d4 cd4 11.Nd4 Nbd7 12.Qd2 Qc7 13.f4 Nc5 14.Rad1 Rac8=) 10...d5 11.cd5 Nd5 12.d4 Nc3 13.Bc3 Nd7 14.Qb2 f6=; C) 9...Nbd7 10.a3 (10.d3 0-0 11.Qa4 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.Qa4 0-0 11.d3 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.Re1 0-0 11.d3 d5 12.Qc2 Bd6 13.cd5 ed5 14.Rac1 Re8=) 10...0-0 11.Qa4 d5 12.cd5 ed5 13.Rfc1 Re8 14.Qf4 Rc8=.

8.0-0 a5 9.d3 Nbd7 (9...0-0 10.Qa4 (10.Nc3 Nbd7 11.Qa4 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.Qc2 Nbd7 11.Nbd2 d5 12.Rac1 a4 13.a3 Bd6 14.Rfd1 Qc7=; 10.Nbd2 Nbd7 11.Qa4 d5 12.Rac1 Bd6 13.cd5 ed5 14.Nh4 Qb8=) 10...d5 11.Ne5 Qc7 12.Nd2 Nbd7 13.f4 Rad8 14.Bf3 Ne8=; 9...d5 10.Qa4 (10.cd5 ed5 11.d4 c4 12.Nc3 Nbd7 13.Rc1 0-0 14.Qc2 Re8=; 10.Nbd2 0-0 11.Ne5 a4 12.Bf3 Qc7 13.cd5 ed5 14.Be2 Bd6=; 10.Nc3 0-0 11.Qa4 Qd6 12.cd5 ed5 13.Nd1 Nbd7 14.Rc1 Rfe8=) 10...0-0 11.Ne5 Qc7 12.Nd2 Nfd7 13.f4 Bf6 14.Ndf3 dc4=) 10.Nbd2 (10.Nc3 0-0 11.Qa4 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.a3 0-0 11.Nc3 d5 12.Qc2 Bd6 13.Rfd1 Qe7 14.Rac1 Rfe8=; 10.Qa4 0-0 11.Nc3 d5 12.cd5 Nd5 13.Rfc1 Bf6 14.Qg4 Ne5=; 10.Qc2 0-0 11.Nc3 d5 12.cd5 Nd5 13.Nd5 Bd5 14.e4 Bb7=) 10...Qc7 (10...0-0 11.Qa4 d5 12.Rac1 Bd6 13.cd5 ed5 14.Rfe1 Qe7=) 11.Ne1 (11.Re1 0-0 12.Qa4 Rad8 13.e4 Rfe8 14.a3 Ne5=) 11...h5 (11...0-0 12.Nef3 a4 13.Qc2 e5 14.e4 Nh5=) 12.f4 (12.Bf3 d5 13.cd5 ed5 14.h3 g5=) 12...0-0-0 (12...h4 13.Bf3 (13.h3= d5 14.Nef3 d4=) 13...d5 14.Rc1 Rd8+=) 13.Bf3 (13.Ndf3 A) 13...d5 A1) 14.Ng5 Rdf8+= (14...Rhf8+=); A2) 14.Ne5 Ne5+/–; B) 13...Ng4 14.Nc2 Bf6+=) 13...Bf3 (better is 13...d5!?= 14.Rc1 Kb8+/–; 13...h4 14.Bb7 Qb7+=) 14.Nef3+/– (worse is 14.gf3 Rhg8+= (14...d5+=); 14.Qf3 Kb8+=) 14...Ng4 15.Qe2 Bf6 16.Bf6 gf6 17.h3 Rh7 (17...Nh6 18.Nh4+/–) 18.Nh4 White prepares f5 18...Nh6 19.e4 White prepares the advance f5 (19.Qh5!? Rg8 20.Qe2+/–) 19...Ng8 20.f5 Ne5 21.Rac1 Rg7 22.a4 Kb8 23.Ndf3 Nf3 24.Qf3 Rg5 25.Qf4 e5 26.Qf2 Nh6 27.Nf3 Rdg8 (27...Rgg8!?+–) 28.Ng5 Rg5 29.Qe3 Qd8 30.Rf3 Qg8 31.g3 Qh7 32.Rf2 Qg7 33.Rg2 Qh7 34.Qf3 Ng8 35.Kf2 Ne7 36.Ke2 Qg8 37.Rcg1 Ka7 38.Qe3 Qh8 39.Kf2 Qg8? (39...Kb7+–) 40.h4 Rg4 41.Qh6 Qg7 (41...Kb7+–) 42.Qg7 (42.Qg7 Rg7 43.g4+–) 1–0. pzn2pawn (1855) – lolly121 (1930), redhotpawn.com, 2016.

8.0-0 a5 9.d4 A) 9...Nbd7 10.a3 (10.Nbd2 0-0 11.dc5 Nc5 12.Nb3 Nce4 13.Rc1 Qc7 14.Bd3 a4=; 10.Na3 0-0 11.Nc2 cd4 12.Qd4 Nc5 13.Rad1 Qc7 14.Qf4 e5=; 10.Re1 0-0 11.Nbd2 cd4 12.Nd4 Qc7 13.a3 Rfc8 14.Rc1 Nc5=) 10...0-0 11.Nbd2 cd4 12.Nd4 Qc7 13.Rc1 Rfc8 14.Bf3 Ne5=; B) 9...cd4 10.Nd4 (10.Bd4 0-0 11.Nbd2 Qc7 12.Qc2 Nbd7 13.Rad1 e5 14.Bc3 Nc5=; 10.Qd4 0-0 11.Rd1 Nbd7 12.Nc3 Nc5 13.Ba3 Nfe4 14.Ne4 Ne4=) 10...0-0 11.Nc3 Nbd7 12.a3 Qc7 13.f4 Nc5 14.Bf3 Bf3=; C) 9...0-0 10.dc5 (10.Nc3 cd4 11.Qd4 Nbd7 12.e4 Nc5 13.Bd3 Qc7 14.Nd2 Rad8+=; 10.Bd3 cd4 11.Nd4 Qc7 12.f3 Nbd7 13.Na3 Nc5 14.e4 Rfc8=; 10.Nbd2 Nbd7 11.dc5 Nc5 12.Nb3 Nce4 13.Rc1 Qc7 14.a3 a4=) 10...dc5 11.Nc3 Qc7 12.Qc2 Nbd7 13.Rfd1 Rad8 14.e4 Bd6=.

8.0-0 Nbd7 9.Nc3 0-0 10.a4 d5 11.d3 Qc7 12.Ra2 (12.cd5 Nd5 13.a5 Nc3 14.Bc3 Bd6+=) 12...e5 13.Nd2 d4 14.ed4 cd4 15.Nce4 Ne4 16.Ne4 f5 17.Nd2 Nc5 18.Nb3 (18.f4 a6+=) 18...Rad8 (18...a6 19.Nc5 Bc5 20.Bf3+=) 19.Nc5+= Bc5 20.Ba3 Ba3 21.Ra3 Rf6 22.Re1 Rh6 23.g3 e4 24.Bf1 e3 (24...Qd6 25.Qb3 Qg6 26.Bg2+=) 25.f3?? (better is 25.fe3 Qc5 26.Qc1+=) 25...f4-/+ 26.g4 Qe7 27.Ra2 Qh4 28.Rg2? (28.a5 Bf3! 29.Qf3 Qe1 30.Re2–+) 28...Bf3!! 29.Qf3 Qe1 30.Qe2 (30.Re2 Qb1 31.g5 Re6–+) 30...Qe2 (30...Qe2 31.Be2 Rf8–+) 0–1. Franke,Roland – Amrehn,Fred, corr GER–ch24 qual11, 1993.

8.0-0 Nbd7 9.d3 Qc7 10.Qb3 h6 11.a4 g5 (11...a5 12.ba6 Ra6 13.Nc3 0-0 14.Nb5 Qb8) 12.a5 g4 13.Ne1 h5 14.Nd2 Rh6 (14...Rg8) 15.e4 h4 16.Nc2 d5 (16...0-0-0 17.ab6 ab6 18.Ra2 Qb8 19.Rfa1; 16...ba5 17.Ne3 Rg6 18.Bc3 a6 19.Ra5 ab5 20.Ra8 Ba8 21.Ra1) 17.cd5 ed5 18.a6! Bc8 19.Ne3 (19.ed5 Bd6) 19...Bd6 (19...de4 20.Nf5!) 20.Nd5 Bh2 21.Kh1 Qb8 (21...Nd5 22.Qd5 Rb8 23.Nc4 Nf6 (23...h3 24.g3 Bg3 25.fg3 Qg3 26.Qf7+–) 24.Bf6 Rf6 25.e5 Be6 26.Qe4 Bc4 (26...Bf5 27.Nd6+–) 27.ef6 Be6 28.Bg4+/–) 22.d4 Bf4? (22...cd4 23.Rac1 Nc5 24.Nf6 Rf6 25.Qd5+/–) 23.Nf4 Qf4 24.Bc1! Rh7 25.Nc4 Qc7 26.e5 Ne4 27.Qe3 f5 28.Nd6! Kf8 29.Ne4 Ne5 30.Ng5 Re7 31.de5 Qe5 32.Qe5 Re5 33.Bc4 1–0. Miralles,Gilles – Meinsohn,Francis, Belfort, 1983.

8.0-0 Nbd7 9.d4 0-0 10.Nbd2 Ne4 (10...a6 11.ba6 Ra6 12.d5=) 11.Ne4+= Be4 12.a4 a5 13.ba6 Ra6 14.Qb3 Qa8 15.Ra3 Bc6 (15...cd4 16.Bd4 e5 17.Bc3+=) 16.Rfa1 Bf6 17.Bc3 Rb8 18.Qd1 Ra7 19.Ne1 (19.a5 ba5 20.Ra5 Ra5 21.Ra5 Qb7+=) 19...d5 (19...cd4 20.Bd4 Be7 21.Bc3+=) 20.Qc2 (20.dc5!? bc5 21.Bf6 Nf6 22.a5=) 20...dc4 21.Bc4 b5 22.ab5 Ra3 23.Ra3 Qa3 24.bc6 Nb6 (24...Nb6 25.Bd3 Nd5+=) 0–1. Krivoshapko,Alexander – Volkov,Alexander, 2012.

8.Nc3 0-0=.

8.Nc3 Nbd7 9.0-0 Qc7 10.a4 0-0 11.d3 Rad8 12.Qc2 Rfe8 (12...d5 13.cd5 ed5 14.d4=) 13.Nd2 (13.a5!?+=) 13...d5= 14.Nf3 Bd6 15.h3 h6 16.a5 dc4 17.dc4 Qc8 (17...ba5 18.Qa4=) 18.Nd2 Bb8 19.ab6 ab6 20.Nce4 Qc7 21.Ng3 Ne5 22.Be5 Qe5 23.Bf3 Bf3 24.Nf3 Qc7 25.Rfd1 Rd1 26.Rd1 Rd8 27.Rd2 Qe7 28.Nf1 Rd2 29.Qd2 e5 30.Qc2 e4 31.N3d2 h5 32.Qa4 Qd8 33.Qa6 Bc7 (33...Be5!?=) 34.Qb7+/– Qe7 35.Ng3 e4 draws heavy fire 35...Qe5 (35...Qd8 36.Nde4 (36.Nge4? Ne4 37.Qe4 Qd2–+) 36...Ne4 37.Qe4 Bg3 38.fg3+/–) 36.Qa8 Kh7 37.Nde4 g6 38.Nf6 Qf6 39.Qc6 Qe5 40.Qd5 (40.Nf1 Kg7+/–) 40...Qa1 (40...Qd5!? 41.cd5 Bg3 42.fg3 Kg7+/–) 41.Nf1+/– Kg7 42.g3 Be5 43.Kg2 Bf6 44.Nd2 h4 45.g4 Qd1 46.Ne4 Qd5 47.cd5 Bd8 48.Nd2 Kf6 49.Nc4 1–0. Lanca,Ivan (2105) – Jamka,Bretislav (1990), Ostrava op–B, 2003.

8.d4 Nbd7 (8...0-0 9.0-0=) 9.Nbd2 (9.0-0 0-0=) 9...0-0 10.Qc2 (10.0-0 a6=) 10...d5 (10...cd4 11.Bd4 Qc7 12.0-0+=) 11.0-0= Qc7 (11...a6 12.cd5 Nd5 13.Rfd1=) 12.a4 (12.cd5!? ed5 13.dc5 bc5 14.Rfc1=) 12...cd4= 13.Nd4 Nc5 (13...Bd6 14.f4=) 14.N2b3 (14.Rfd1 Rfd8=) 14...Rac8 15.cd5 (15.Nc5 Bc5 16.Rfc1 Rfd8=) 15...Nd5 (15...Bd5 16.Nc5 Bc5 17.Bf3=) 16.Nc5= Qc5 (16...bc5 17.Nf3=) 17.Qc5 (17.Rfc1 Qc2 18.Nc2 Nc3 19.Bc3 Rc3+=) 17...Rc5 (17...bc5 18.Nf3+=) 18.Rac1 (18.a5 e5 19.Nf5 Rc2=) 18...Rfc8= 19.Rc5 (19.Bf3 Bd6=) 19...Rc5 (19...bc5 20.Nf3=) 20.Ba3= Rc3 (20...Rc8 21.Be7 Ne7 22.Rd1=) 21.Be7 Ne7 22.Ra1 (22.Rd1 Kf8+=) 22...e5= 23.Nf3 Bf3 (23...f6 24.Rd1=) 24.Bf3 Kf8 (24...f5 25.e4=) 25.Kf1 f5 26.e4 f4 27.Be2 Kf7 (27...Ng8 28.Rd1=) 28.Ke1 Nc8 (28...Ng8 29.a5=) 29.Rd1 Rc5 (29...Ke7 30.Rd5 Rc5 31.Bd3=) 30.Bg4 Kf6 (30...Ke7 31.Rd7 Kf6 32.Rd8+=) 31.Bc8 (31.Rd8 Ne7+=) 31...Rc8= 32.Rd7 Rc4 (32...Rc1 33.Kd2 Rg1 34.Ke2+=) 33.Ra7 Re4 34.Kd2 (34.Kf1 Rb4+=) 34...g5 (34...Rd4 35.Ke2=) 35.f3+= Rd4 36.Kc3 h5 (36...Ke6 37.Rh7 Ra4 38.Rh6 Kd5 39.Rb6+=) 37.Ra6+/– Kf5 38.Rb6 Ra4 39.Ra6 Rd4 40.Rh6 (40.b6 Rd1+/–) 40...Rd1? (better is 40...h4!?+=) 41.Rh5+– (41.Rh5 Rc1 42.Kd3 Rd1 43.Kc4+–) 1–0. Mroz,Antoni – Macs,O, corr ICCF cp, 1994.

7.c4 Bc5 8.Be2=+.

7.c4 g6 8.d4 d5 (8...Bb4 9.Bc3=) 9.cd5 (9.Ba3 Ba3 10.Na3 dc4 11.Bc4 0-0=) 9...Qd5 10.Be2 Bg7 (10...Bb4 11.Bc3=) 11.0-0 (11.Nc3 Qd6+=) 11...Na5 (11...0-0!?=) 12.Nc3+/– Qd8 13.Qa4 Bc6 14.Bb5 (14.Qc2 0-0+=) 14...Bb5 15.Nb5 0-0 ½–½. Woschkat,Karl_Heinz – Pal,Antal, corr 3GMM–04, 1995.

7.Be2 Bc5=.

7.Be2 Rc8 8.0-0 d5 9.Ne5 Bd6 10.f4 Qc7 11.Bb5 Ke7 12.Nc6 Bc6 13.a4 Bb7 14.Na3 a6 15.Bd3 Qc6 16.Qe2 Ne4 17.Bg7 (17.Ba6?! Ba6 18.Qa6 Nd2+=) 17...Rhg8 18.Bb2 (18.Bd4 Ke8+/–) 18...Rg6 (worse is 18...Qa4 19.Nb5 ab5 20.Ra4 ba4 21.Ra1+–) 19.Be4 de4 20.Qh5 Qd5 21.f5 Rcg8 22.Qh4 Rg5 23.fe6 Ke6 24.Rf6 (24.Rf2 Kd7 25.Qh7 Ke8+/–) 24...Ke7 (better is 24...Kd7!? 25.Rf2 Rh5+=) 25.Rf2+= Ke8 26.c4 (better is 26.Qh7 Rf8 27.g3+=) 26...Rh5-/+ 27.cd5 Rh4 28.g3 Bd5 29.Rc1 Rhg4 30.Kf1 h5 31.Nc4 Bc7 32.Bf6 R8g6 33.Be5?? (better is 33.Ne5!? Be5 34.Be5-/+) 33...Rc6 (33...Bc4 34.Rc4 Be5 35.Rc8 Ke7 36.Ra8–+) 34.h3?? (better is 34.Nd6 Bd6 35.Rc6 Be5 36.Rh6–+) 34...Rgg6 (34...Rc4 35.Rb1 Rg5 36.Bc7 Rc7 37.Kg2–+) 35.Rf5 (35.Bc7 Bc4 (35...Rc7?! 36.Nd6 Kd7 37.Rc7 Kc7 38.Ne8 Kc6 39.Kg2+=; 35...Rc4?! 36.Rc4 Bc4 37.Kg2-/+) 36.Ke1 Rc7–+) 35...Bc4 (worse is 35...Rc4 36.Rc4 Bc4 37.Kf2 Be5 38.Re5 Re6 39.Rh5–+) 36.Kg2 Bd3 37.Rc6 Rc6 38.Rh5 Rc2 39.Bf6 (39.Bc7 Rc7 40.Rh6–+) 39...Rd2 40.Kg1 Re2 (40...Bg3 41.Rf5–+) 41.Bd4 Bg3 42.Bb6 Bf2 43.Kh1 Be3 44.Be3 Re3 45.Kg2 Bc4 46.h4 Ra3 47.Kf2 (47.Re5 Kd7 48.h5–+) 47...e3 (47...e3 48.Kg2 Kd7–+) 0–1. Tamarkin,Larry S – Shure,Gary, Nassau CC–ch, 1989. (=1.Nf3 Nf6 2.b4 e6 3.b5 b6 4.Bb2 Bb7 5.e3 c5 6.bc6 Nc6)

7.Be2 d5 8.0-0 Bd6 9.c4 0-0 10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 e5 13.Qa4 Qe7 14.Rac1 a6 15.Qh4 Qh4 16.Nh4 f5 17.a4 Rac8 18.Bc4 Kh8 19.Be6 Rce8 20.Bd7 Re7 21.Bc6 Bc6 22.Be5 Bc5 23.d4 Ba4 24.Nf3 Bb4 25.Rc4 a5 26.Rb4 ab4 27.Bd6 Ree8 28.Bf8 Rf8 29.Rb1 b3 30.Nd2 Rc8 31.g4 fg4 32.Nb3 Bc6 33.Rc1 Bb7 34.Rc8 Bc8 35.d5 Kg8 36.e4 Kf7 37.f4 gf3 38.Kf2 b5 39.Kf3 b4 40.Nc5 Kf6 41.Ke3 g5 42.Kd4 g4 43.e5 Ke7 44.d6 Ke8 45.e6 Be6 46.Ne6 b3 47.d7 Kd7 48.Nc5 Ke7 49.Nb3 Kf6 50.Ke4 Kg5 51.Nd2 h5 52.Nf1 h4 53.Ne3 Kh5 54.Kf4 g3 55.h3 Kg6 56.Kg4 Kf6 57.Kh4 1–0. Morozevich,A (?) – Kingway, ICC blitz, 1999.

8.Nc3 0-0 9.Be2+= Re8 (9...a6 10.0-0+=) 10.Rc1 (10.0-0 a6=) 10...Rc8 (10...Qc7 11.0-0=) 11.0-0 d6 (11...Qc7 12.g3=) 12.Qc2 (12.Qa4 Qd7=) 12...h6 (12...Qd7 13.Qa4=) 13.Qb1 (13.Qa4 a6=) 13...Qc7 (13...Ne5 14.Ne5 de5 15.Rcd1=) 14.Rfd1 (14.Nb5 Qd7=) 14...Qb8 (14...Ne5 15.Nb5 Qb8 16.Ne5 de5 17.Qa1=) 15.h3 (15.d4 Na5 16.Nd2 Ba6=) 15...Nd7 (15...Ne5 16.Ne5 de5 17.Bd3+=) 16.Nh2 (16.d4 Na5 17.Nd2 Nf6=) 16...Nce5 17.Nb5 (17.d3 Bf6=) 17...a6+= 18.Nd4 Bf6 (18...Nc5 19.d3+=) 19.Ng4 (19.d3 Qa8 20.f3 Nc6=) 19...Ng4 20.Bg4 (20.hg4 Qc7+=) 20...Nc5 (20...Qa8 21.d3=) 21.d3= Qa8 (21...Qc7 22.Qc2=) 22.e4 Bg5 (22...Rc7 23.Ne2 Bg5 24.f4=) 23.Rc3 (23.Rc2 g6=) 23...Bf6 (23...g6 24.Bc1=) 24.Ra3 Qb8 25.Ne2 (25.Nb3 Nd7=) 25...Bb2= 26.Qb2 Nd7 (26...Qc7 27.Rb1=) 27.Ng3 (27.Nc3 Qc7+=) 27...Qc7 (27...g6 28.Bf3=) 28.Rb3 (28.Nh5 f6+/–) 28...g6 (28...Nc5 29.Ra3 Nd7=) 29.Kh2 (29.Rb1 Qc5=) 29...f5 (29...d5!?-/+) 30.Bf3= f4 (30...Nc5!? 31.Ra3 Rf8=) 31.Ne2+= e5 (31...Nc5 32.Ra3 e5 33.Rb1+=) 32.Bg4+/– Rcd8 (32...Bc6 33.Nc3+/–) 33.Bd7 Qd7 (33...Rd7 34.Rb6 Bc6 35.Ra6+/–) 34.Rb6 Bc8 (34...Bc6 35.Rb1+–) 35.f3+– g5 (35...Qc7 36.Rb1+–) 36.d4 (36.Nc3 Qg7+–) 36...Qg7 (36...Qc7 37.Nc3 ed4 38.Rd4+–) 37.de5 de5 38.Rbd6 (38.Rd5 h5 39.Qd2 Qe7+–) 38...Rd6 39.Rd6 Kh7 (39...Be6 40.Qb6 Kf7 41.c5+–) 40.Qb6 Re7? (better is 40...h5 41.g4 hg4 42.hg4 Re7+–) 41.Nc3 h5 (41...Rb7 42.Qc6 Rd7+–) 42.Nd5 Rf7 43.Qd8 Rf8 (43...Qf8 44.Nf6 Rf6 45.Qf6 Qf6 46.Rf6+–) 44.Qe7 (44.Qe7 Qe7 45.Ne7+–) 1–0. Novikov,Konstantin – Markov,Vesna (2155), Ch Chess Club (open), 2002.

8.Nc3 a6 9.Be2=.

8.Be2 0-0 9.0-0 d5 10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Bf6 13.d4 Re8 14.e4 Rc8 15.Qd2 Rc7 16.Rfd1 Rd7 17.Qe3 Be7 18.Rab1 Bf6 19.e5 Be7 20.Bd3 Bf8 21.Bc2 a6 22.Qf4 h6 23.h4 Ne7 24.h5 Qc7 25.Rbc1 (25.Qe3 Rc8 26.Rdc1 Qd8+= (26...Qc3? 27.Bh7 Kh7 28.Rc3+–)) 25...Nd5-/+ 26.Qe4 f5 (26...g6!? 27.Bb2 Nc3+=) 27.ef6+= Nf6 (27...Nc3?? 28.Qh7 Kf7 29.Qg6 Kg8 30.f7 Rf7 31.Qh7; 27...Qc3?? 28.Qh7 Kf7 29.Qg6 Kg8 30.f7 Rf7 31.Qh7) 28.Qh4?? (better is 28.Qe2 Bf3 29.Qf3=) 28...Bf3–+ 29.gf3 Qd6 (better is 29...Ba3–+) 30.Re1 Ree7 31.Re5 (better is 31.Qg3!? Qa3 32.Bb3+=) 31...Qa3-/+ 32.Bd2 Qf3 (better is 32...Qb2 33.Qg3 Rd4 34.Bh6 Kh8-/+) 33.Bb3= Nd5 34.Rc8 Qf6 35.Qg3 Rf7 36.Rc6 Bd6 (36...Rd6!? 37.Rc8 b5+=) 37.Bd5= ed5 38.Re8 Rf8 39.Rf8 Qf8 (worse is 39...Kf8 40.Bb4 Ke7 41.Rb6+/–) 40.Qg2 Bf4 1–0. Fekete,Albert (2325) – Samu,Gabor Jr (2085), HUN–chT2 Toth, 2004.

8.Be2 d5 9.cd5= Qd5 10.0-0 (10.Nc3 Qd6=) 10...Rc8 (10...0-0 11.Nc3 Qd6 12.Rc1+=) 11.Nc3 Qd6 12.Qa4 (12.Nb5 Qd5=) 12...0-0+= 13.Rac1 Rfd8 Exerts pressure on the backward pawn 14.Nb5 (14.d4 Nd5=) 14...Qd7 (14...Qb4 15.Qb4 Bb4 16.Bf6 gf6 17.d4=) 15.d3 (15.Na7 Ra8 16.Rc6 Bc6 17.Qc6 Ra7 18.Qb6 Ra2-/+) 15...a6 16.Nc3 (16.Nbd4 Nd4 17.Qd4 Qd6+=) 16...Qd6 (16...e5 17.Rfd1+=) 17.Qb3 b5 (17...Na5 18.Qa4+=) 18.Rfe1 (18.a4 b4 19.Na2 Na5+=) 18...Qb8 (18...e5 19.a4 b4 20.Ne4 Ne4 21.de4+=) 19.Ba1 (19.a4 b4 20.Nb1 Na5-/+) 19...Bd6 (19...e5 20.a4 b4 21.Nb1+=) 20.Ne4 (20.a4 Na5 21.Qb2 Bf3 22.Bf3 Bh2 23.Kh1 Be5-/+) 20...Ne4+= 21.de4 Na5 (21...Ne5 22.Be5 Be5 23.Rc8 Rc8 24.Ne5 Qe5 25.f3+=) 22.Qb1 (22.Qb2 f6 23.Qb1 Nc4+=) 22...Rc1 (22...Nc4 23.a4+=) 23.Rc1= Ba3 (23...Nc6 24.Bd4=) 24.Rc3 (24.Be5 Qa8 25.Rc7 Be4-/+) 24...Bf8 (24...Qd6 25.Rd3 Qe7 26.Rd8 Qd8 27.Qc2=) 25.Rd3 Be7 (25...Bd6 26.Qb2 f6 27.Rd4+=) 26.Bc3 (26.Be5 Bd6 27.Bd6 Rd6 28.Rd6 Qd6=) 26...Qc7 27.Rd8 Bd8 28.Qd3 (28.Be5 Qc6=) 28...h6 (28...Be4!? 29.Qd4 f5-/+) 29.Nd2 (29.Ne5 Be4 30.Qd4 Bf6-/+) 29...Be7 30.Bb2 Nc6 31.Qc3 (31.Nf3 e5+=) 31...e5 32.Qc1 (32.Bg4 Bb4 33.Qd3 Qd6 34.Qd6 Bd6+=) 32...Qd6 33.Nf3 Kh7 (33...Qf6 34.Qd2 Bd6 35.Qd3+=) 34.Qb1 (34.Qc3 b4 35.Qb3 Qf6+=) 34...g6 (34...Qf6 35.Qd3+=) 35.Bc3 f6 (35...b4 36.Bb2=) 36.Ne1 (36.Bc4 bc4 37.Qb7 Qd1 38.Ne1 Qc1+=) 36...Bc8+= ½–½. Bonetti,Shane – Nemec,Zdenek, TT–12 ETC, 2004.

8.0-0 0-0 9.Nc3 e5=.

8.0-0 0-0 9.c4 Rc8 10.Nc3 d5 11.cd5 ed5 12.Nb5 Ne4 13.Rc1 Qd7 14.d3 Nd6 15.Nc3 Bf6 16.Qd2 Qe6 17.a3 d4 18.Nd1 Rfd8 19.Re1 de3 20.Qe3 Qf5 21.Bf6 Qf6 22.Qg5 (22.Nc3!?=) 22...Qg5-/+ 23.Ng5 Nd4 24.Nc3? (better 24.Rc8 Rc8 25.Bf3 Bf3 26.Nf3 Nf3 27.gf3-/+) 24...Nb3-+ 25.Rc2 Nb5! 26.Bg4 (26.Nb5 Nd4 Double attack (26...Rc2 Pinning; 26...Rc2 Deflection; 26...Nd4 Decoy)) 26...Rc3 (26...Nc3? 27.Bc8 Bc8 28.Rc3+-) 27.Rc3 Nc3 28.Re7 Bd5 29.Ra7 h6 30.Nh3 (30.Ne4 Be4 31.de4 Nc5-+) 30...Nc5 31.Nf4 (31.Rc7 Bb7 32.Re7 Kf8-+ (32...Rd3?! 33.Re8 Kh7 34.Bf5 g6 35.Bd3 Nd3 36.f3-+)) 31...Bb7 32.d4 (32.a4 N3a4 33.h4 Nc3-+) 32...Rd4 33.g3 Nb5 34.Rb7 Nb7 35.Bf3 Nc5 36.Nd5 Nd7 37.Ne7 Kf8 38.Nf5 Rc4 39.a4 Nd4 40.Nd4 Rd4 41.Bc6 Nc5 0-1. Dias,Jose Oliveira Gaspa - Garcia Dorado,A (2180), 14th Figueira da Foz Open, 2020.

8.0-0 0-0 9.c4 Rc8 10.Ne5 Ne5 (10...d5 11.d3+=) 11.Be5 d5 12.Bb2? (better is 12.d3!?+=) 12...dc4–+ 13.Na3 (13.Nc3–+) 13...b5 (better is 13...Bd5–+) 14.Nb5 Qd5 15.Bf3 Qb5 16.Rb1 Bf3 17.Qf3 Qd5 18.Bd4 (18.Qd5 Nd5 19.e4 Nf4–+) 18...Ne4 (18...Qf3 19.gf3 Rc7 20.Rfc1–+) 19.Qg4 Threatening mate: Qxg7 19...e5 20.Ba1 (20.Ba7 f5 21.Qf3 Qd7–+) 20...Nd2 (20...Nd2 21.Rfd1 c3–+) 0–1. Dicks,Stephen – Nemec,Zdenek (2045), TE–2004–P–01711, 2004.

7.Na3 Bd6=.

7.c4 (--> 6.c4 d5 7.Be2).

7.d3 Bd6 8.d4=.

7.d3 Be7 8.Nbd2 (8.0-0 a6 9.Na3 0-0=) 8...Nbd7 (8...0-0 9.0-0=) 9.c4 dc4 (9...0-0 10.0-0=) 10.Nc4 0-0 (10...a6 11.a4=) 11.0-0 Nd5 (11...a6 12.Qb3=) 12.Qb3 Bf6 (12...a6 13.a4=) 13.Nd6 Qc7 14.Ne4 (14.Nb7 Qb7 15.Rfc1 Bb2 16.Qb2 Rae8=) 14...Bb2 15.Qb2 N7f6 (15...e5 16.Qb3=) 16.Nf6 (16.Rfd1 Rfd8=) 16...Nf6 17.Ne5 Nd7 18.Nd7 Qd7 19.a4 Qe7 (19...Rfe8 20.d4=) 20.a5 (20.Qe5 a5=) 20...Qg5 Do you see the mate threat? 21.g3 (better is 21.e4=) 21...h5 (better is 21...e5!?=) 22.a6+/– Bc8 23.Ra4 (23.f4 Qg6+/–) 23...e5 (23...Bd7 24.Rh4+/–) 24.Re4 f6 (24...Bg4!? 25.Re5 Qf6+/–) 25.Qb3+– Kh8 (25...Kh7 26.Bh5 g6+–) 26.Rh4 (better is 26.Bh5!? Bf5 27.Rh4+–) 26...g6+/– 27.Qd1 (better is 27.f4 ef4 28.ef4+/–) 27...Rf7? (27...Kg7+=) 28.Qb3?? (28.f4 ef4 29.ef4 Qd5+–) 28...Rd7 (better is 28...Rf8!?=) 29.Bf3 (29.f4 ef4 30.ef4 Qh6+–) 29...Rb8 30.Qe6 Rd8 (30...Rd3?? 31.Qe8 Kg7 32.Qe7 Kg8 33.Qa7+–) 31.Qf7 Bd7? (better is 31...Bf5 32.Qa7 Bd3+/–) 32.Bh5!+– Qh4 (32...Qh5 A pinning theme 33.Rh5) 33.gh4 gh5 34.Qf6 Kh7 35.Qe7 (worse is 35.Qe5 Rg8 36.Kh1 Bg4 37.Qe4 Rg6+–) 35...Kh8 (35...Kh6 36.Kh1 Bg4 37.f3+–) 36.Qe5 (better is 36.Kh1 Bg4 37.Qe5 Kh7+–) 36...Kg8 37.Qg5 (better is 37.Kh1 Kf7 38.Rg1 Rg8 39.Qh5 Ke6 40.Qh6 Kd5 41.e4 Ke5 42.f4 Kd4 43.Qd6 Ke3 44.Qd7 Rbd8 45.Qh3 Kd2+–) 37...Kf8 38.Qf6 Kg8 (38...Ke8 39.Rb1 Ra8 40.d4+–) 39.Kh1 (39.Kh1 Bg4 40.Rg1 Rd3 41.h3+–) 1–0. Plock,Joerg – Betke,Arno, Neubrandenburg op–C, 1999.

8.d3 Nbd7 9.Nbd2 0-0 10.c4 Qe7 11.Qc2 e5 12.cd5 Nd5 13.Qc4 Rad8 14.Rfd1 Kh8 15.a4 f5 16.Qh4 Qe6?? (16...Qh4 17.Nh4 Be7 18.Nhf3=) 17.Nc4?? (17.Qh7 Kh7 18.Ng5 Kg6 19.Ne6 Kf6 20.Nd8 Rd8 21.Ne4 Ke6 22.Nd6 Kd6+-) 17...Bb8?? (17...Be7 18.Qh5 N5f6 19.Qh3+=) 18.Ng5?? (better 18.Qh7! Kh7 19.Ng5 Kg6 20.Ne6+-) 18...Qg8 (18...Qg6 19.Qh5 Qh5 20.Bh5+=) 19.Bh5 N5f6 20.Bg6 Pawn h7, live or die! 20...h6 (better 20...f4!?+/-) 21.Bf5+- Rde8 22.e4 Re7 23.Nf3 Rfe8 24.Qh3 Nf8 (better 24...Rd8+-) 25.g4 (better 25.Rdc1!?+-) 25...g6 (25...Be4 26.de4 Qc4 27.Nd2+/-) 26.Qh6 Rh7 27.Qg5 gf5? (better 27...Qg7 28.Nfe5 gf5 29.Nf7 Kg8 30.Bf6 Qg5 31.Ng5 Rh6+/-) 28.Qf6 Rg7 (28...Qg7 29.Qg7 Kg7 30.gf5 Nd7+-) 29.Nfe5 Re6 (29...Ree7 30.Nc6 Ref7 31.Qh6 Nh7 32.Nb8 Qb8+-) 30.Nf7 Kh7 1-0. Trottier,Alain (1825) - Beaudry,Marc_Andre (1845), Quebec Open, 2019.

8.Be5=.

8.c4 Bd6 9.Nc3 dc4 10.Bc4 0-0 11.d3 (11.a3 Qc7+=) 11...Rc8 (11...Qc7 12.Kh1+=) 12.a4 (12.Ne4 Be4 13.de4 Qc7=) 12...Bb8 (12...Qc7 13.Kh1+=) 13.Qe2 (13.a5 ba5 14.e4 Nb6=) 13...Qc7 14.g3 Rfd8 15.Rad1 (15.e4 Ng4=) 15...Nf8 (15...Qd6 16.e4=) 16.e4 (16.Na2 Qe7=) 16...Ng6 17.Nd2 e5 (17...Ne5 18.f4 Nc4 19.dc4=) 18.Nf3 (18.a5 Qd6=) 18...h6 (18...Qd6 19.Qe3=) 19.Ne1 (19.Ra1 Qd6=) 19...Qd7 20.Ng2 Qh3 (20...Bd6 21.Ne3=) 21.f3 (21.Ne3 Bd6=) 21...Ne7 (21...Rd7 22.Ne3=) 22.Ne3 Rd7 (22...Bd6 23.Ng4=) 23.Ng4+= Rf8 (23...Ng4 24.fg4 Rf8 25.Qf3+=) 24.Nf6+/– gf6 25.f4 (25.a5 f5+=) 25...ef4 26.gf4 Kh7 27.Rf3 Rg8 28.Kh1 Qh5 29.Rg1 Rg1 30.Kg1 Nf5 (30...f5 31.Qg2 Ng6 32.Qg3=) 31.Nd5 (31.Rf2 Qe2 32.Ne2 Ne3+=) 31...Bd5= 32.Bd5 Bf4 33.Qf2 (33.Kf1 Qg5 34.ef5 Rd5+/–) 33...Bh2 34.Kf1 Nh4 35.Rf6? (better is 35.Rh3 Qd1 36.Qe1 Qe1 37.Ke1=) 35...Qd1-/+ 36.Qe1 Qd3 37.Qe2 Qh3 38.Ke1 Bg3?? (38...Ng2 39.Kd1 Bf4 40.Rf7 Rf7 41.Bf7 Ne3 42.Ke1 Qh1 43.Kd2 Qb1–+ (worse is 43...Qe4 44.Ke1–+)) 39.Kd2 (39.Kd1 Qg2+=) 39...Ng6 40.Rf7 Rf7 41.Bf7 Qd7 42.Bd5 Qd6 (42...Be5 43.Be5 Ne5 44.Qg2-/+) 43.Kc2 (43.Qh5 Qf4 44.Kc2 Ne7=) 43...Be5+= 44.Qf3 (44.Bc1 Ne7 45.Bb3 Qd4-/+) 44...Qe7 (44...Nf4 45.Qg3 Qg6 46.Qf3-/+) 45.Bc1 Qf6 (45...Bg7 46.Bb3+=) 46.Qh3= Threatening mate... how? 46...Qf2 (46...Ne7 47.Qd7=) 47.Kb1 Bg7 48.Qe6 The mate threat is Qg8 48...Qf8 49.Kc2 Ne7 50.Bc4 Qf2 51.Bd2 Qf6 52.Qf6 Bf6 53.Bf4 h5 (53...Bd4 54.Bb8=) 54.Bb8+= h4 (54...Kg6 55.e5 Bg7 56.Be6=) 55.Be6+/– Ng6 56.Ba7 Bd8 57.Bb8 (57.a5!? ba5 58.b6+/–) 57...Kg7= 58.Bf5 (58.Bd5 Kf6 59.Kd3 Ke7=) 58...Kf6 59.Bd6 Ne5 60.a5 ba5 The passed pawn on b5 will quickly become a dangerous weapon 61.Bc5 Bc7 (61...Nc4 62.Bd4 Kg5 63.Kd3+=) 62.Kc3 (62.Kb3 Nd3 63.Bd4 Be5+/–) 62...Nf3 63.b6 Bb8 64.Kc4 (64.Kb3 Ke5 65.Bf2 Kd6+–) 64...Ke5 65.Be3 (65.Bf2 a4 66.Kb4 a3 67.Ka3 Nd2 68.Bh4 Ne4 69.Be4 Ke4+–) 65...h3 (65...a4!? 66.b7 a3+=) 66.Bh3+– Ke4 67.Bc1 (67.Bf2 Nd2 68.Kb5 Kf3+–) 67...Ne5 (67...Bd6 68.Bg2+–) 68.Kb5 Kd5 (68...a4 69.Ba3+–) 69.Bg2 Ke6 70.Ba3 a4 (70...Kd7 71.Bb2+–) 71.Bf1 Kd5 (71...Ng6 72.Ka4 Nf4 73.Bc4 Kd7 74.Kb5+–) 72.Be7 (72.b7 Ke6+–) 72...Ke6 (72...Nd7 73.b7+/–) 73.Bc5+– Kd5 (73...Nf3 74.b7+–) 74.Bh3 (74.b7 Ke6+–) 74...Nd3 75.Be7 (75.Ba3 Nf4 76.Bg4 Ke4 77.Ka4 Nd3+–) 75...Nf4 (75...Ne5 76.Bg2 (76.Ka4?! Kc6+=) 76...Ke6 77.Bb4+–) 76.Bf1 (76.Bc8 Ng6 77.Bc5 Ne5+–) 76...Ke6 77.Bc5 Nd5 78.Bc4 Ke5 79.b7 Nc7 (79...Nc3 80.Kb4 Ne4 81.Bg1+–) 80.Ka4 Ne8 (80...Ne6 81.Be7+–) 81.Bg1 Nd6 82.Bg8 (82.Bh2!? Kf5+–) 82...Kf6 83.Bh2 Ke7 84.Kb4 (84.Bd6 Kd6 85.Kb5 Kc7+–) 84...Kd7+/– 85.Bd5 Bc7 86.b8Q (better is 86.Bd6!? Bd6 87.Kb5+–) 86...Bb8+= 87.Bd6< (87.Be5 Bc7+=) ½–½. Miltner,Arndt (2310) – Dirr,Ulrich (2260), BL2–S, 1994.

8.c4 Bd6 9.cd5 ed5 10.d3 0-0 11.Nbd2 a6 12.a4 ab5 (12...Re8 13.ba6 Ra6 14.d4+=) 13.ab5= Ra1 14.Qa1 Qe7 (14...Qc7 15.Rc1=) 15.Qa7= Rb8 16.Ra1 d4 17.Nc4 Bc7 (17...Nd5 18.e4 Bf4 19.g3=) 18.Qa2 (18.Ne1 Ne5 19.Nb6 de3+=) 18...de3 (18...Nd5 19.Bc1+=) 19.fe3 Ra8 20.Qb1 Nd5 (20...Ra1 21.Qa1 Ng4 22.e4+= (22.Bg7? Bf3 23.Bf3 Bh2 24.Kf1 Ne3 25.Ne3 Qe3–+)) 21.Ra8 Ba8 22.Qa1 (22.e4 Nf4 23.Bd1 Bb7=) 22...Qe8 23.e4 Nf4 24.Bf1 Ne6 25.g3 Qd8 ½–½. Pommerel,Wim H – Wosch,Arkadiusz J, corr ICCF Cup11 V84, 1997.

8.d3 Qc7 9.Nbd2 Rg8 (9...Bd6 10.c4=) 10.c4+= g5 11.cd5 ed5 12.Rc1 (12.Re1 g4 13.Nh4 Bd6+=) 12...h5 (12...g4 13.Nh4=) 13.Re1 h4 (13...g4 14.Nh4=) 14.Nf1 (14.e4 h3 15.e5 Nh5+/-) 14...h3= 15.g3 g4 16.Nd4 (16.N3d2 a6 17.d4 ab5 18.Bb5 Bc6= (worse 18...Ra2 19.Qb3 Rb2 20.Qb2+/-)) 16...Qd6 (16...Qe5 17.Qd2=+) 17.Nf5 Qe6 18.e4 0-0-0 (18...d4!?=) 19.Nd4+= Qd6 20.Nc6 (20.Qa4 Ne5 21.Nf5 Qe6 22.Qa7 de4 23.de4 Rd7+/-) 20...Bc6+= 21.e5 Ne5 22.Be5 (22.bc6? d4 (22...Nc6?! 23.Bf6 Qf6 24.Bg4 Kb8 25.Bh3=+) 23.Nd2 Bh6-+ (23...Nc6?! 24.Ne4 Qd5 25.Bf3-/+)) 22...Qe5 23.Bg4 Ng4 24.Re5 Ne5 25.bc6 Kc7 26.Qa4 Nc6 27.Qh4 (27.Qf4 Bd6 28.Qf7 Kb8+/-) 27...Bg7 28.Qh3 Nd4 29.Kg2 Rh8 30.Qg4 Be5 31.Re1 Rdg8 32.Qd1 Kd6 33.Qa4 a5 34.Ne3 f5 (34...Ra8!?+=) 35.Rb1 Rb8 36.f4 Bf6 37.Nd5 b5 38.Qa5 Kd5 39.Qc7 Rhd8 40.Qf7 Kc6 41.Qf6 Rd6 42.Qe5 Rbd8 (42...Ra8 43.Rb2+-) 43.Rc1 Rd5 44.Qf6 R8d6 (44...R5d6 45.Qe7 Ra8 46.Kh1+-) 45.Qf8 Re6 46.h4 Re2 47.Kh3 Nf3 (47...Re3 48.Qc8 Kd6 49.Rc5 Rc5 50.Qd8 Kc6 51.Qd4+-) 48.Rh1 Rd3 49.Qf5 c4 50.h5 Nd2 (50...Rd7 51.h6 Nd4 52.Qb1+-) 51.h6 Ne4 52.Rg1 (52.Kh4!? Rd6 53.Qc8 Kb6+-) 52...Rd6 53.h7 (better 53.Qc8 Kb6 54.Qf8 Nf2 55.Kg2+-) 53...Rh6 54.Kg4 Nd6 55.Qb1 Reh2 56.Rd1 Rh7 57.Qg6 (57.a4 Rg7 58.Kf3 Rh3 59.ab5 Kc5+-) 57...Rd7 58.f5 (58.a4 ba4 59.Qg8 Kb6+-) 58...Ra2 59.f6 Rf2 60.f7! c3 (60...Rdf7 61.Qd6 Discovered attack (61.Rd6 Deflection); 60...Rff7 61.Rd6 Pinning) 0-1. Mely (2605) - StraightLarsen (2565), ChessWorld.net, 2011.

8.d3 Bd6 9.Nbd2 Qc7=. Ribli.

8.a4 Nbd7 9.a5 0-0 (9...a6 10.ab6 Qb6 11.Nc3=) 10.a6+= Bc8 11.c4 Qc7 12.d4 (12.Nc3+=) 12...Ne4 (better is 12...cd4!? 13.Qd4 e5+=) 13.dc5 Ndc5 14.cd5 Rd8 15.Qc2 Rd5 (15...ed5 16.Nd4+=) 16.Rc1= e5?? (better is 16...Bd6=) 17.Qe4!+– (17.Qe4 Ne4 18.Rc7+–) 1–0. Bonetti,Shane – guest64, ICC, 2002.

8.c4 Nbd7 9.cd5 ed5 10.Nc3 0-0 11.d4 Ne4 12.dc5 Ndc5 13.Rc1 Bf6 14.Nd4= Nc3 15.Bc3+= Ne4 16.Bb4 Be7 17.Nc6 Bc6 18.Be7 Qe7 19.bc6 Nf6 20.Qa4 Qc7 21.Bd3 a5 22.Rfd1 Rfd8 23.Qf4 Qf4+= 24.ef4 Ra7 25.Rc2 Rc7 26.Rb1 Rb8 27.f3 g6 28.Bb5 Kf8 29.Rcb2 d4 30.Rd1+/– Nd5 31.Rd4 Nc3 32.a4 Nb5 33.ab5 Re8 34.Kf2 Re6 35.Rbd2 Ree7 36.Rd8 Kg7 37.Rb8 (37.Rb8 Kf6 38.Rb6+–) 1–0. chem1st – tossubanaani, ChessWorld.net, 2005.

8.Ne5 0-0=.

7.0-0 Nbd7 8.c4 d5 9.cd5 Nd5 10.d4 cd4 11.Nd4 Rc8 12.Nd2 e5 13.N4f3 Bd6 14.Rc1 Nc7 15.a4 0-0 16.Qb3 Qe7 17.Rc2 Nc5 18.Qa2 e4 19.Nd4 N7e6 20.Rfc1 Qh4=+ 21.g3 Qe7 22.Nf5+= Qd7 23.Qa1 f6= 24.Nd6 Qd6=+ 25.Qa3 Qd7 26.Nb3 (26.Nb3 Nd3 27.Rc8 Rc8 28.Rc8 Bc8 29.Nd4=+; 26.a5 Bd5=+). M8IN3 – RABALA, Live Game Caissa's Web, 2005.

7.c4 Nbd7 8.0-0 Be7 9.d4 0-0 10.Nbd2 Rc8 11.Qb3 (11.Qa4 cd4 12.ed4 Rc7=) 11...d5 (11...cd4 12.Bd4 e5 13.Bb2=) 12.a4 (12.Rfc1 dc4 13.Nc4 Bd5=) 12...Ne4 (12...Qc7 13.Rac1=) 13.Ne4 de4 14.Nd2 (14.Ne5 cd4 15.Bd4 Nc5=) 14...f5 (14...Bd6 15.f4=) 15.Rac1 (15.a5+=) 15...f4 (15...Bd6!?=) 16.ef4 (16.Bg4 Kh8+/–) 16...Rf4 (16...cd4 17.Bd4 Bc5 18.Be3+/–) 17.d5 (17.Qg3 Rf6+/–) 17...ed5+= 18.cd5 Bd6 (18...Bf6 19.d6 Kh8 20.Qe3 Rf2 21.Rf2 (worse is 21.Kf2 Bb2 22.Rc4 Ne5-/+) 21...Bb2 22.Nc4+=) 19.Qg3 (19.Nc4 Qc7+=) 19...Qe7 (19...Ne5 20.Be5 Be5+=) 20.Qb3 (20.Nc4 Nf6+=) 20...Nf8 (20...Rcf8!?=) 21.g3 (21.Bc4+=) 21...Rf7 (better is 21...Qg5+=) 22.Ne4?? (better is 22.Rfe1+/–) 22...Qe4–+ 23.Rfe1? (23.Bc4–+) 23...Bd5 (23...Qd5?! 24.Qd5 Bd5 25.Rcd1 Bg3 26.hg3-/+) 24.Qd5 (24.f3 Bg3 25.fe4 Bf2 26.Kg2 Bb3 27.Rf1–+) 24...Qd5 25.Bc4 Qf5 (25...Qf3 26.Bf7 Qf7 27.Rcd1–+) 26.Bf7 (26.f4 Rcc7–+) 26...Qf7 27.Rc4 (27.Rcd1 Bb8 28.Ra1–+) 27...Qc4 0–1. GuestKYJS – nalsur, freechess.org, 2018.

7.d4 cd4 8.Qd4 e5=.

8.Nc3 0-0=.

8.c4 0-0 9.d3 (9.Nc3 a6=) 9...Nbd7 (9...a6 10.Na3=) 10.Nc3 Re8 11.a4 Bf8 (11...a6 12.Rb1=) 12.Nd2 (12.a5 a6 13.ab6 Qb6=) 12...Qc7 (12...a6 13.Qb3=) 13.a5 a6 14.ab6 Nb6 (14...Qb6 15.ba6 Qb2 16.Na4=) 15.ba6 Ra6 (15...Ba6 16.Na4=) 16.Nb5+= Qe7 17.Bf3 (17.Ra6 Ba6 18.Bf6 A) 18...Qf6? 19.Nc7 Qe7 20.Ne8 (20.Na6?! Ra8+/–) 20...Qe8 21.Bf3+–; B) 18...gf6+=) 17...Ra1 18.Ba1 (18.Qa1 Bf3 19.Bf6 gf6 20.Nf3 Bg7+=) 18...d5= 19.Be5 Qd7 (19...Nfd7 20.Bc7 Bc6 21.Na7+=) 20.Qb3 (20.Qb1 Qc8+=) 20...dc4 21.Nc4 (21.dc4!? Qd2 22.Bb7=) 21...Nc4= 22.dc4 (22.Qc4? Bd5 23.Qa4 Ra8–+) 22...Bf3 23.gf3 Qc6 (23...Qe7 24.e4=) 24.Bf6 gf6 25.e4 Bh6 (25...e5 26.Kh1=) 26.Rd1 (26.Qc3 Bg7=) 26...Bf4 (26...f5 27.Qd3=) 27.Qd3 (27.Qc3 Be5 28.Qe3 Kh8=) 27...Ra8 28.Kg2 (28.Qc3 f5=) 28...Kg7 29.Kh3 (29.Kh1 Qe8=) 29...f5 (29...Qe8 30.Rg1 Kh8 31.Rg4=) 30.ef5 Kf6 (30...ef5 31.Qc3 f6 32.Qd3=) 31.Nc3 Rg8?? (31...Kg7 32.Qe4 Qe4 33.Ne4 ef5 34.Nc5 Rc8+/–) 32.Ne4+– Kf5 33.Nc5 (33.Ng3 Kf6 34.Nh5 Ke7 35.Nf4 e5+=) 33...Kf6 (33...Kg5 34.Rg1 Kh6 35.Rg8 Qc5+–) 34.Ne4 Ke7 (34...Kf5 35.Ng3 Kf6 36.Nh5 Ke7 37.Nf4 Rc8+–) 35.Qa3 Ke8 (35...Bd6 36.Nd6 Kf6 37.Ne4 Kg7 38.Qa1 e5 39.Qe5 f6 40.Rg1 Kh8 41.Rg8 Kg8+–) 1–0. Bulcourf,Carlos – Pucheta,Ruben Dario, San Martin ARG–ch, 1987.

8.c4 Nbd7 9.d3 (9.Nc3 0-0=) 9...Qc7 (9...0-0 10.Nc3=) 10.Nbd2 (10.Nc3 0-0=) 10...0-0 (10...a6 11.ba6 Ra6 12.Qc2+=) 11.Qb3 Rac8 (11...h6 12.Bc3=) 12.Rac1 (12.a4 a5=) 12...Rfd8 (12...h6 13.a4=) 13.Rfd1 (13.h3 Ra8=) 13...Qb8 (13...h6 14.h3=) 14.a4 (14.h3 Qc7=) 14...Nf8 (14...Qc7 15.Ra1+=) 15.Ne1 (15.a5!?+=) 15...Ng6 ½–½. Schmitt,Bernhard – Remaitre,Alexandre (2050), Verbandsliga Sued Baden, 2005.