Author: Ed Schröder
Date: 00:04:53 04/11/05
Go up one level in this thread
On April 11, 2005 at 00:39:18, Will Singleton wrote:
>I am pretty happy with this game, in which Amateur thought it had a slight
>advantage during with the pawns for the piece, when some progs disagree. But it
>should have won the KQKR ending, I'm assuming.
It's quite simple to program the KQKR ending, here is:
1) A piece square table that drives the lonely king into a corner.
2) A king_to_king tropism routine that follows the lonely king wherever it goes.
That's all, when the lonely king is in a corner or is on the edge of the board
search will do the rest, usually 8-9 plies is enough.
Here is the selfplay at 5 secs per move.
( 104... Kd5 105. Re2 Qh8 106. Kg4 Qc8+ 107. Kf4 Qc4+ 108. Kf3 Qd3+ 109. Re3
Qf5+ 110. Kg3 Qg6+ 111. Kf3 Kd4 112. Re1 Qc2 113. Re2 Qf5+ 114. Kg2 Kd3 115. Rf2
Qg4+ 116. Kh2 Ke3 117. Ra2 Qh5+ 118. Kg1 Qd1+ 119. Kh2 Qd4 120. Rg2 Qh4+ 121.
Kg1 Kf3 122. Rg6 Qe1+ 123. Kh2 Qe5+ 124. Kg1 Qc5+ 125. Kh2 Qh5+ 126. Kg1 Qxg6+
127. Kh2 Qg2# )
Ed
=======================================
>[Event "ICC 20 3"]
>[Site "Internet Chess Club"]
>[Date "2005.04.10"]
>[Round "-"]
>[White "crafty"]
>[Black "Amateur"]
>[Result "1/2-1/2"]
>[ICCResult "Game drawn by the 50 move rule"]
>[WhiteElo "2526"]
>[BlackElo "2554"]
>[Opening "Caro-Kann: Steinitz variation"]
>[ECO "B17"]
>[NIC "CK.09"]
>[Time "23:06:02"]
>[TimeControl "1200+3"]
>
>1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5 e6 7. Qe2 Nb6
>8. Bb3 h6 9. N5f3 a5 10. c3 c5 11. a3 cxd4 12. Nxd4 a4 13. Bc2 Qc7 14. Nb5
>Qc6 15. Nf3 Bd7 16. Nbd4 Qc7 17. O-O Ra5 18. Re1 Rd5 19. Ne5 Bd6 20. Nxd7
>Bxh2+ 21. Kf1 Nbxd7 22. g3 Bxg3 23. fxg3 Qxg3 24. Qf3 Qc7 25. Qg2 Qc4+ 26.
>Re2 g6 27. Qf3 e5 28. b3 Qa6 29. Bd3 Qb6 30. bxa4 Kf8 31. Nc2 Qb3 32. Nb4
>Rd6 33. Bd2 b6 34. Bc2 Qe6 35. Rae1 Ng4 36. Rg2 Ndf6 37. Kg1 Qc8 38. Kh1 Kg7
>39. Bc1 Qc4 40. Rg3 Rhd8 41. Qg2 R8d7 42. Rg1 h5 43. Re1 Kh8 44. Qf3 Qc5 45.
>Rf1 Qc4 46. Re1 Qc5 47. Rf1 Qc8 48. Qe2 Qe8 49. Bd3 Qa8+ 50. Kg1 Qc8 51. Bb5
>Rc7 52. c4 Kg8 53. Bg5 Nh7 54. Bd2 Nhf6 55. Rg2 Ra7 56. Nc2 e4 57. Bb4 Rd3
>58. Rf4 Qd8 59. Bc6 Rd1+ 60. Ne1 Rc7 61. Bd5 Nxd5 62. cxd5 Qxd5 63. Rxe4 Rc8
>64. a5 bxa5 65. Bxa5 Kg7 66. Bb4 Rcc1 67. Rg3 Qf5 68. Rg2 Nf6 69. Re5 Qf4
>70. Bd2 Qd4+ 71. Kh1 Rb1 72. Re7 Ng4 73. Re4 Qf6 74. Ba5 Rd5 75. Bc7 Qc3 76.
>Bg3 Rdd1 77. Re7 h4 78. Qf1 Nf6 79. Bf2 Qh3+ 80. Kg1 Qxa3 81. Qe2 Qd6 82.
>Rg5 h3 83. Bg3 Qd4+ 84. Kh1 Qc3 85. Re3 Qc6+ 86. Kh2 Qc1 87. Qf3 Rb2+ 88.
>Kxh3 Qc8+ 89. Rg4 Rd5 90. Re5 Rd8 91. Rf5 Rh8+ 92. Rh4 g5 93. Ng2 g4+ 94.
>Qxg4+ Nxg4 95. Rg5+ Kf6 96. Rxg4 Qa8 97. Rf4+ Ke6 98. Bf2 Rg8 99. Re4+ Kd6
>100. Bg3+ Rxg3+ 101. Kxg3 Rxg2+ 102. Kxg2 f5 103. Kf3 fxe4+ 104. Rxe4 Qd5
>105. Ke3 Kc5 106. Kf4 Qf7+ 107. Ke3 Qd5 108. Kf4 Qd2+ 109. Kf3 Qd3+ 110. Kf4
>Qf1+ 111. Ke5 Qf3 112. Rf4 Qe3+ 113. Kf5 Qh3+ 114. Ke4 Qg2+ 115. Kd3 Qg3+
>116. Ke4 Qe1+ 117. Kd3 Qd1+ 118. Ke3 Qe1+ 119. Kd3 Qd1+ 120. Ke3 Qb3+ 121.
>Ke4 Qd5+ 122. Ke3 Qg5 123. Ke4 Qd5+ 124. Ke3 Qe5+ 125. Re4 Qg5+ 126. Kf3
>Qh5+ 127. Ke3 Qh6+ 128. Kd3 Qd6+ 129. Ke3 Qg3+ 130. Ke2 Qh2+ 131. Ke3 Qh6+
>132. Kd3 Qd6+ 133. Ke3 Qf6 134. Rf4 Qc3+ 135. Ke4 Qd4+ 136. Kf5 Qe3 137. Re4
>Qf3+ 138. Rf4 Qh5+ 139. Kf6 Qh6+ 140. Ke5 Qh2 141. Ke4 Qe2+ 142. Kf5 Kd5
>143. Kg5 Qd2 144. Kf5 Qe1 145. Kg4 Qe2+ 146. Kg5 Qd2 147. Kf5 Qe1 148. Kg4
>Qe6+ 149. Kf3 Qc8 150. Rh4 Qe8 151. Rf4 Qh5+ 152. Ke3 Qg5 153. Kf3 Kc5 154.
>Rf5+ {Game drawn by the 50 move rule} 1/2-1/2
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