Author: Yuriy Lyapko
Date: 02:13:17 03/15/02
Yesterday I saw very interesting queen endgame in my continuous blitz
tournament.
Beowulf had won it, but for wrong reason...
It's evaluation was about +3.00 after black's 71st move, but the position was
still drawn until Bringer's huge blunder on move 76.
Interesting, that Beowulf v1.8 isn't so optimistic...
Here is the game...
[Event "Computer chess game"]
[Site "LYAPKO"]
[Date "2002.03.14"]
[Round "2"]
[White "Beowulf_19"]
[Black "Bringer_19"]
[Result "1-0"]
[TimeControl "40/300"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 d6 6. Bg5 a6 7. Qd2 Nbd7 8.
d5 Ne5 9. Rd1 c6 10. f4 Ned7 11. dxc6 bxc6 12. Nf3 Rb8 13. e5 dxe5 14. Nxe5
Qc7 15. Nxd7 Nxd7 16. Be2 Qa5 17. Kf1 f6 18. Bh4 g5 19. Bg3 e5 20. f5 Nc5
21. Qc2 Qb4 22. Bf2 Nb7 23. a3 Qe7 24. g4 Nd8 25. b4 Qb7 26. Kg2 a5 27. Bc5
Re8 28. h4 axb4 29. axb4 Nf7 30. hxg5 Nxg5 31. Ne4 Nxe4 32. Qxe4 Bf8 33.
Bxf8 Rxf8 34. Qd3 Qg7 35. Rb1 c5 36. Qd5+ Kh8 37. bxc5 Rxb1 38. Rxb1 Bxf5
39. Rb7 Qg5 40. Qd6 Rg8 41. Kf2 Qf4+ 42. Ke1 Bxg4 43. Bxg4 Rxg4 44. Rb8+
Kg7 45. Qf8+ Kg6 46. Qe8+ Kh6 47. Qf8+ Rg7 48. Rb6 Kg6 49. Qe8+ Kg5 50. Qe6
Ra7 51. Ra6 Qe3+ 52. Kf1 Rxa6 53. Qxa6 Qxc5 54. Qb5 Qe3 55. c5 h5 56. c6 h4
57. Qb7 Qf3+ 58. Kg1 Kg6 59. Qd7 h3 60. Qe8+ Kf5 61. Qd7+ Kf4 62. Qd2+ Kg3
63. Qh2+ Kg4 64. Qc2 Qe3+ 65. Kh2 Qg3+ 66. Kh1 Qf3+ 67. Kg1 h2+ 68. Kxh2
Qh3+ 69. Kg1 Qe3+ 70. Kh1 Kg5? 71. c7 Qh3+ 72. Kg1 Qc8 73. Qd2+ {1} Kg6 74. Qd8
Qg4+ 75. Kf2 Qf4+ 76. Ke2 Qh2+?? {2} 77. Kd3 Qg3+ 78. Kc4 Qf4+ 79. Kd5 Qd4+ 80.
Ke6 Qc4+ 81. Ke7 Qc5+ 82. Qd6 Qa7 83. Qxf6+ Kh7 84. Qf5+ Kg8 85. Qd7 Qc5+
86. Kf6 Qb6+ 87. Qe6+ Qxe6+ 88. Kxe6 Kg7 89. c8=Q e4 90. Ke7 e3 91. Qg4+
Kh8 92. Kf8 e2 93. Qg8#
{White Mates} 1-0
Here are the key positions:
{1} 2q5/2P5/5p2/4p1k1/8/8/2Q5/6K1 w - -
73.Kh2! Kh6! (the only move to hold the position) 74. Qd2+ Kg7! 75. Qd8 Qf5! 76.
c8=Q Qf2+ with draw
I wonder how many programs will find 73.. Kh6! and in how much time...
{2} 3Q4/2P5/5pk1/4p3/5q2/8/4K3/8 b - - 0 5
76..Qe4+! 77. Kd2 Qg2+(Qb4+ also possible) 78. Kd3 Qf3+ 79. Kc4 Qc6+=
or 78. Ke3 Qh3(g3)+ 79. Ke4 Qg2+=
finally here are Beowulf's evals(at 20 sec):
FEN = 8/8/2P2p2/4p1k1/8/4q3/2Q5/7K w - -
1.9: 9 305 1297 348964 c7 Qh3+ Kg1 Qc8 Qd2+ Kg6 Qd8 Qg4+ Kf2 Qf4+
Ke2 Qe4+ Kd2 Qf4+ Kd3
1.8: 9 26 1242 367919 c6c7 e3h3 h1g1 h3c8 c2d2 g5g6 d2d8 c8g4 g1f2
g4f4 f2e2 f4e4 e2d2 e4f4 d2c3
FEN = 8/2P5/5p2/4p1k1/8/7q/2Q5/7K w - -
1.9: 10 325 1664 492730 Kg1 Qc8 Qd2+ Kg6 Qd8 Qg4+ Kf2 Qf4+ Ke2 Qe4+
Kd2 Qf4+ Kc3 Qc1+ Kb3 Qe3+ Ka4
1.8: 9 32 890 295027 h1g1 h3c8 c2d2 g5g6 d2d8 c8g4 g1f2 g4f4 f2e2
f4e4 e2d2 e4b4 d2d3 e5e4 d3e3
FEN = 3Q4/2P5/5pk1/4p3/6q1/8/8/6K1 w - -
1.9: 10 315 1906 528574 Kf2 Qf4+ Ke2 Qe4+ Kd1 Qf3+ Kc2 Qc6+ Kb3 Qb6+
Kc4 Qc6+ Kd3 Qf3+ Kd2 Qg2+ Ke3 Qh3+ Ke4 Qg2+ Kd3 Qf3+ &rep.
1.8: 9 35 1406 473480 g1f2 g4f4 f2e2 f4e4 e2d2 e4b4 d2d3 b4b5 d3c3
b5c5 c3b3 c5b5 b3c3 &rep.
FEN = 3Q4/2P5/5pk1/4p3/4q3/8/4K3/8 w - -
1.9: 9 300 1241 329201 Kd2 Qg2+ Kd3 Qf3+ Kc4 Qc6+ Kb4 Qb6+ Ka4 Qa6+
Kb3 Qb6+ Ka2 Qa5+ Kb2 Qb6+ Kc1 Qc6+ Kb2 Qb6+ &rep.
1.8: 9 32 1291 440694 e2d2 e4g2 d2c3 g2c6 c3b4 c6b6 b4c4 b6c6 c4b3
c6b5 b3c2 b5c6 c2b2 c6b5 b2c2 &rep.
FEN = 3Q4/2P5/5pk1/4p3/8/8/3K2q1/8 w - -
1.9: 9 311 1642 462607 Ke3 Qg3+ Ke4 Qg2+ Kd3 Qf3+ Kc4 Qc6+ Kd3 Qf3+
&rep.
1.8: 10 0 1521 556172 d2c3 g2c6 c3d3 c6f3 d3c2 f3c6 c2b1 c6b6 b1c2
b6c6 &rep.
Best regards,
George
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