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Subject: Re: Is KBBN vs KR a win?

Author: Tord Romstad

Date: 07:38:17 01/17/06

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On January 17, 2006 at 09:20:57, Uri Blass wrote:

>Black can win it
>
>White plays Kf4 or Rf6 with mate in 46 against itself
>
>source
>http://www.k4it.de/index.php?topic=egtb&lang=en

That's a useful resource -- Thanks!

At least Glaurung managed to play one of the two best
defensive moves from the diagram position:  It played
78. Rf6.  I am sure the rest of the game was far from
flawless.

Here is the full game (the opening looks like it is taken
from a game between beginners):

[Event "Computer chess game"]
[Site "cm-84.210.38.014.chello.no"]
[Date "2006.01.17"]
[Round "1"]
[White "Glaurung 1.0.1"]
[Black "Shredder 9"]
[Result "1/2-1/2"]
[TimeControl "240+1"]

1. Nc3 d5 2. d4 Bf5 3. f3 Nf6 4. g4 Bg6 5. g5 Nh5 6. e4 e5 7. dxe5 d4 8.
Nd5 c6 9. Nf4 Nxf4 10. Bxf4 Qb6 11. c3 Qxb2 12. Rb1 Qxc3+ 13. Bd2 Qa3 14.
h4 Bh5 15. Rxb7 Nd7 16. Qb1 Rd8 17. Rh3 h6 18. gxh6 gxh6 19. f4 Be7 20. Ne2
d3 21. Rb3 Qa4 22. Rbxd3 Qxe4 23. Rb3 Qd5 24. Rbd3 Qe6 25. Qb3 Qg4 26. Ng3
Nc5 27. Rxd8+ Bxd8 28. Qe3 Qd1+ 29. Kf2 Bb6 30. Kg2 Rg8 31. Qe1 Qa4 32. Be2
Qe4+ 33. Kh2 Rxg3 34. Rxg3 Qxe2+ 35. Qxe2 Bxe2 36. Rg8+ Ke7 37. Bb4 Ke6 38.
Rh8 Ne4 39. Rxh6+ Kd5 40. Rh7 Be3 41. Rxf7 c5 42. Ba5 Ke6 43. Rxa7 Bxf4+
44. Kg2 Bxe5 45. Ra8 c4 46. Re8+ Kd5 47. Rd8+ Ke6 48. Re8+ Kf5 49. Rf8+ Kg4
50. Rg8+ Kf4 51. Rf8+ Ke3 52. Bb6+ Bd4 53. Ba5 c3 54. Bxc3 Nxc3 55. a3 Ke4
56. Kg3 Bh5 57. Rf4+ Ke3 58. Rf5 Ne2+ 59. Kh2 Bf3 60. Kh3 Nf4+ 61. Kh2 Ke4
62. Rf8 Ng6 63. Ra8 Be5+ 64. Kg1 Nxh4 65. a4 Kd3 66. Rf8 Bc6 67. a5 Ng6 68.
Rc8 Bd4+ 69. Kh2 Bb7 70. Re8 Ne5 71. Re7 Bc8 72. Re8 Bd7 73. Re7 Bb5 74.
Rb7 Ba6 75. Rb8 Nc6 76. Rf8 Bc3 77. Kg3 Bxa5 78. Rf6 Bb5 79. Rf5 Ne5 80.
Rh5 Ke4 81. Rh4+ Ke3 82. Rh1 Bd3 83. Rh8 Be1+ 84. Kg2 Be4+ 85. Kh3 Bb4 86.
Rb8 Bd6 87. Rg8 Be7 88. Kg3 Bf6 89. Rc8 Bg5 90. Rf8 Be7 91. Rg8 Bc5 92. Re8
Bb4 93. Kh4 Kf4 94. Rc8 Bf3 95. Rc7 Be1+ 96. Kh3 Bf2 97. Rg7 Bd5 98. Rh7
Kf3 99. Re7 Ng6 100. Rg7 Be4 101. Kh2 Bg3+ 102. Kg1 Be5 103. Rd7 Nf4 104.
Re7 Bd4+ 105. Kf1 Bc2 106. Re8 Bc3 107. Kg1 Bd4+ 108. Kf1 Bg6 109. Rd8 Bf2
110. Rd5 Be4 111. Rd2 Bc5 112. Rd8 Bf2 113. Rd2 Bc5 114. Rd8 Ng2 115. Rd2
Ne3+ 116. Ke1 Nc4 117. Rd7 Bb4+ 118. Kd1 Nb2+ 119. Kc1 Nd3+ 120. Kd1 Ke3
121. Ra7 Nb2+ 122. Kc1 Nc4 123. Kd1 Bg2 124. Rg7 Kd3 125. Rg3+ Ne3+ 126.
Kc1 Kc4 127. Rg7 Kd3
{Draw by fifty-move rule} 1/2-1/2

Tord



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