Author: Terry Presgrove
Date: 00:37:11 02/11/00
Last night I was watching RT play a GM in 3 2 blitz matchs. RT's score shot up
to +6 and I thought the game was over. Not quite.....I picked move 67 because
it was the first of many oportunities RT had for the win. This is no problem
for Crafty (TB-mate 18) or I'm sure other programs with Tablebases but for RT it
became a nightmare. My question is how many programs without TB's can find the
win? I left RT on for over 5 minutes and could not find it. But when I forced
the move it saw the win (but not mate) emediately.
(D) 8/8/8/6p1/5kp1/6R1/5PK1/3q4 b - - 0 67 bm Qf3
RT blundered the win away at move 115 giving up the winning pawn.
The only time problem was for the GM.
The game went as follows:
1. d4 d5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. Nbd2 c6 7. c4 Bf5 8. b3
Nbd7 9. Bb2 Rc8 10. Re1 Ne8 11. Nh4 Be6 12. Rb1 Qa5 13. a3 dxc4 14. Nxc4 Qa6 15.
Nd2 Nd6 16. e4 Nb5 17. Nhf3 f6 18. h3 Qa5 19. Rc1 Nd6 20. b4 Qh5 21. g4 Qh6 22.
Rc2 Nb6 23. Bc1 g5 24. Qe2 Qg6 25. Nh2 Nb5 26. Ndf3 Bb3 27. Rb2 Bc4 28. Qe3 Rcd8
29. Nf1 e5 30. dxe5 Rd3 31. Qc5 Re8 32. exf6 Bxf6 33. Rd2 Rb3 34. a4 Be7 35. Qf5
Nxa4 36. Ne3 Be6 37. Qxg6+ hxg6 38. Nc2 Rb1 39. Bf1 Nac3 40. Ncd4 Nxd4 41. Rxd4
Bxb4 42. Bd2 c5 43. Bxc3 cxd4 44. Rxb1 dxc3 45. Nd4 Ba3 46. Rxb7 Bc5 47. Nxe6 c2
48. Nxc5 c1Q 49. Nd3 Qc3 50. Rxa7 Rd8 51. Ra6 Kg7 52. Ra7+ Kf8 53. Kg2 Rxd3 54.
Bxd3 Qxd3 55. Ra4 Qc2 56. Rd4 Ke7 57. Rb4 Ke6 58. e5 Qc6+ 59. Kg1 Qc3 60. Re4
Qxh3 61. Re3 Qxg4+ 62. Rg3 Qd1+ 63. Kg2 g4 64. Re3 g5 65. Rg3 Kxe5 66. Re3+ Kf4
67. Rg3 Qd5+ ( Qf3+ ) 68. Kg1 Qc4 69. Kg2 Qc6+ 70. Kg1 Qc1+ 71. Kg2 Qd2 72.
Kg1 Qe2 73. Kg2 Qc4 74. Kg1 Qc2 75. Kg2 Qe4+ 76. Kg1 Qe1+ 77. Kg2 Qe2 78. Kg1
Qa6 79. Kg2 Qb5 80. Kg1 Qb1+ 81. Kg2 Qa1 82. Re3 Qa7 83. Rg3 Qa6 84. Kg1 Qa1+
85. Kg2 Qd1 86. Re3 Qd2 87. Rg3 Kf5 88. Re3 Qd1 89. Rg3 Ke4 90. Re3+ Kd4 91. Rg3
Qe2 92. Kg1 Qe1+ 93. Kg2 Qd1 94. Re3 Qc2 95. Rg3 Qc6+ 96. Kg1 Qc8 97. Kg2 Qf5
98. Kg1 Qb1+ 99. Kg2 Qe4+ 100. Kg1 Qe6 101. Kg2 Qd5+ 102. Kg1 Qf5 103. Kg2 Kd5
104. Kg1 Ke4 105. Kg2 Qf4 106. Re3+ Kd5 107. Rg3 Qc4 108. Kg1 Ke5 109. Kg2 Ke6
110. Kg1 Kf5 111. Kg2 Ke5 112. Kg1 Qd4 113. Kg2 Kf4 114. Kg1 Qe4 115. Ra3 g3
116. Rxg3 Qb1+ 117. Kg2 g4 118. Re3 Qd1 119. Rg3 Qd2 120. Re3 Qd5+ 121. Kg1 Qd1+
122. Kg2 Qb1 123. Rg3 Qc2 124. Re3 Qc4 125. Rg3 Qe2 126. Re3 Qb5 127. Rg3 Qf5
128. Kg1 Qc5 129. Kg2 Qb5 130. Kg1 Qa6 131. Kg2 Qc4 132. Kg1 Qc1+ 133. Kg2 Qb2
134. Kg1 Qa1+ 135. Kg2 Qa6 136. Kg1 Qc8 137. Kg2 Qd7 138. Kg1 Ke4 139. Kg2 Kd4
140. Kg1 Qc8 141. Kg2 Qc6+ 142. Kg1 Qc1+ 143. Kg2 Qc8 144. Kg1 Qd7 145. Kg2 Qb7+
146. Kg1 Qb1+ 147. Kg2 Qg6 148. Kg1 Qg5 149. Kg2 Qd5+ 150. Kg1 Qf5 151. Kg2....I
offered draw he accepted
Crafty analysis position above:
end-game phase
clearing hash tables
time limit 4.50 (27.00)
nss depth time score variation (1)
8 0.34 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
8-> 0.39 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
9 0.39 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
9-> 0.50 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
10 0.51 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
10-> 1.38 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
11 1.41 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
11-> 6.05 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
12 6.10 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
12-> 11.85 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
13 12.05 Mat18 67. ... Qf3+ 68. Rxf3+ gxf3+ <EGTB>
Black(66): exit
Black(67): new
While its true he could have blundered under time constraint....I couldn't
take it anymore...he deserved the draw. He had around 25 seconds left and Tiger
just over a minute (if my memory serves me right). After move 115 I believe
it was a TB draw. I don't have all the 5 man TB's but Crafty after 6 minutes
could not find a win.
I include here if someone wants to check.
(D) 8/8/8/6p1/4qk2/6R1/5P2/6K1 b - - 0 116
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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