Author: José Antônio Fabiano Mendes
Date: 14:37:15 04/14/00
Go up one level in this thread
On April 11, 2000 at 20:40:08, Pete Galati wrote:
>On April 11, 2000 at 16:23:15, José Antônio Fabiano Mendes wrote:
>
>>On April 11, 2000 at 01:09:43, Pete Galati wrote:
>>
>>>On April 11, 2000 at 00:33:24, Dann Corbit wrote:
>>>
>>>>On April 11, 2000 at 00:01:21, Pete Galati wrote:
>>>>
>>>>>This is a game from a quick match between the new Comet and Crafty. My time
>>>>>controls I guess were a little bit fast 40 moves/10 minutes, and this is my slow
>>>>>computer, but Comet made a sacrifice I did'nt understand on the position below,
>>>>>99. RxP QxR, Shouldn't have Comet played 99. R-R1 instead? Other than that some
>>>>>great jockeying for position, and Comet makes what looks to me like some brave
>>>>>moves, but lost the game.
>>>>>
>>>>>"Craftyob" indicates that it's Crafty using the book downloaded at Bob's ftp.
>>>>>
>>>>>[Event "Computer chess game"]
>>>>>[Site "DEFAULT"]
>>>>>[Date "2000.04.10"]
>>>>>[Round "2"]
>>>>>[White "Comet"]
>>>>>[Black "Craftyob"]
>>>>>[Result "0-1"]
>>>>>[TimeControl "40/600"]
>>>>>
>>>>>1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b6 7. Bg5 Bb7
>>>>>8. e3 d6 9. f3 Nbd7 10. Bd3 c5 11. Ne2 Rc8 12. Qb3 h6 13. Bh4 cxd4 14. exd4
>>>>>d5 15. O-O dxc4 16. Bxc4 Nb8 17. Rfc1 Nc6 18. Qd3 e5 19. d5 Na5 20. Ba2 g5
>>>>>21. Bg3 Qd6 22. Nd4 Bxd5 23. Nf5 Qe6 24. Nxh6+ Kg7 25. Bxd5 Nxd5 26. Nf5+
>>>>>Kh8 27. b4 Nc6 28. b5 Nce7 29. Nxe7 Nxe7 30. Rd1 Nf5 31. Bf2 Rfd8 32. Qxd8+
>>>>>Rxd8 33. Rxd8+ Kg7 34. a4 Kf6 35. Re1 Qc4 36. Re4 Qc1+ 37. Be1 Qc5+ 38. Kh1
>>>>>Qc1 39. Rd3 Ke6 40. Rc3 Qd1 41. Rc6+ Nd6 42. Re3 f5 43. a5 f4 44. Re4 bxa5
>>>>>45. h3 Qb1 46. Re2 Qxb5 47. Rcc2 a4 48. Kh2 a3 49. Bf2 a5 50. Ba7 Kf6 51.
>>>>>Ra2 Nc4 52. Bf2 Qb3 53. Bc5 a4 54. Rf2 Qc3 55. Rfc2 Qb3 56. Rf2 Ke6 57. Bf8
>>>>>Qe3 58. Rfc2 Qb3 59. Rf2 Qd3 60. Bc5 Qc3 61. Rac2 Qb3 62. Ra2 Qd3 63. Rfc2
>>>>>Qb3 64. Rf2 Qd3 65. Rfc2 Ne3 66. Rc1 Qd5 67. Re2 Nf1+ 68. Rxf1 Qxc5 69. Ra1
>>>>>Qb4 70. Rea2 e4 71. fxe4 Qxe4 72. Rxa3 Qe5 73. Kh1 Qh8 74. Rxa4 Kf5 75. Ra8
>>>>>Qh4 76. Kg1 Kg6 77. R1a6+ Kf5 78. Rf8+ Ke5 79. Re8+ Kf5 80. Ra5+ Kf6 81.
>>>>>Rb5 g4 82. Rf8+ Ke6 83. Rxf4 Qe1+ 84. Rf1 Qc3 85. h4 g3 86. Rh5 Qd3 87.
>>>>>Rh6+ Ke5 88. Rh8 Ke6 89. Re1+ Kf7 90. Rh5 Qd4+ 91. Kh1 Qf4 92. Ra1 Kg6 93.
>>>>>Rg5+ Kf7 94. Ra7+ Kf6 95. Ra6+ Ke7 96. Ra7+ Kd6 97. Ra6+ Kc7 98. Rg7+ Kb8
>>>>>99. Rxg3 Qxg3 100. Rh6 Kc7 101. Rh7+ Kd6 102. Kg1 Qe1+ 103. Kh2 Qe5+ 104.
>>>>>g3 Qe2+ 105. Kh3 Qf1+ 106. Kg4 Qd1+ 107. Kg5 Qd5+ 108. Kh6 Qe6+ 109. Kh5
>>>>>Qe5+ 110. Kh6 Qxg3 111. h5 Qe3+ 112. Kg6 Qe6+ 113. Kg5 Ke5 114. Rc7 Qf6+
>>>>>115. Kg4 Qf4+ 116. Kh3 Qf3+ 117. Kh4 Kf6 118. Ra7 Qf2+ 119. Kg4 Qxa7 120.
>>>>>h6 Qe3 121. h7 Kg7 122. h8=Q+ Kxh8 123. Kh4 Kg7 124. Kh5 Qg1 125. Kh4 Kf6
>>>>>126. Kh3 Kf5 127. Kh4 Qh2#
>>>>>{Black mates} 0-1
>>>>>
>>>>>[D]1k6/6R1/R7/8/5q1P/6p1/6P1/7K w - - 0 99
>>>>>
>>>>>99. RxP?
>>>>Probably your best move at that point. Crafty would have done the same thing,
>>>>if the tables were turned:
>>>>White(1): epdpfga epd.epd epd.out
>>>>PFGA: EPD record: 1
>>>>end-game phase
>>>> clearing hash tables
>>>> time surplus 0.00 time limit 16:39 (16:39)
>>>> nss depth time score variation (1)
>>>> 2 0.00 -Mat01 1. h5 Qc1#
>>>> 2 0.00 ++ 1. Ra8+!!
>>>> 8 0.70 -1.11 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Re4 Qd3
>>>> 4. Re6 Qg3
>>>> 8-> 0.95 -1.11 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Re4 Qd3
>>>> 4. Re6 Qg3
>>>> 9 1.30 -1.07 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Re4 Qd3
>>>> 4. Re8 Kd7 5. Re5
>>>> 9-> 1.69 -1.07 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Re4 Qd3
>>>> 4. Re8 Kd7 5. Re5
>>>> 10 3.12 -- 1. Rxg3
>>>> 10 5.56 -1.44 1. Rxg3 Qxg3 2. Rb6+ Kc7 3. Rh6 Qf2
>>>> 4. Rh7+ Kd6 5. h5 Qf5 6. Rh6+ Ke5 7.
>>>> Kh2
>>>> 10-> 6.65 -1.44 1. Rxg3 Qxg3 2. Rb6+ Kc7 3. Rh6 Qf2
>>>> 4. Rh7+ Kd6 5. h5 Qf5 6. Rh6+ Ke5 7.
>>>> Kh2
>>>> 11 13.41 -1.52 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Re4 Kd5 5. Ra4 Qe3+ 6. Kh2 Ke5
>>>> 11-> 15.46 -1.52 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Re4 Kd5 5. Ra4 Qe3+ 6. Kh2 Ke5
>>>> 12 19.51 -1.51 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Re4 Kd5 5. Ra4 Ke5 6. Ra5+ Kf4 7.
>>>> h5
>>>> 12-> 24.69 -1.51 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Re4 Kd5 5. Ra4 Ke5 6. Ra5+ Kf4 7.
>>>> h5
>>>> 13 37.21 -1.51 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Kh1 Ke6 5. Rc4 Kf6 6. Kg1 Kg6 7.
>>>> Re4
>>>> 13-> 49.66 -1.51 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Kh1 Ke6 5. Rc4 Kf6 6. Kg1 Kg6 7.
>>>> Re4
>>>> 14 1:17 -1.54 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Kh1 Ke6 5. Kg1 Kf6 6. Ra6+ Kf7 7.
>>>> Ra4 Qe3+ 8. Kh2 Kf6
>>>> 14-> 1:53 -1.54 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Kg1 Kd6
>>>> 4. Kh1 Ke6 5. Kg1 Kf6 6. Ra6+ Kf7 7.
>>>> Ra4 Qe3+ 8. Kh2 Kf6
>>>> 15 4:09 -1.61 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Ra7+ Kb6
>>>> 4. Ra4 Kc5 5. Kg1 Kc6 6. Kh1 Kd5 7.
>>>> Kg1 Ke5 8. Ra5+ <HT>
>>>> 15-> 5:21 -1.61 1. Rxg3 Qxg3 2. Ra4 Kc7 3. Ra7+ Kb6
>>>> 4. Ra4 Kc5 5. Kg1 Kc6 6. Kh1 Kd5 7.
>>>> Kg1 Ke5 8. Ra5+ <HT>
>>>>
>>>>I think by your suggested move 99. R-R1 you really mean Ra1?
>>>>
>>>>If we do that, then we have this:
>>>>[D]1k6/6R1/8/8/5q1P/6p1/6P1/R6K b - - acn 106; acs 0; bm Qxh4+; ce 32762; dm 3;
>>>>pv Qxh4+ Kg1 Qd4+ Kh1 Qxa1#;
>>>
>>>Yes, I meant Ra1.
>>>
>>>Ok, thanks. This is why I'm such a crappy Chess player, I wasn't thinking that
>>>the unprotected pawn was key to anything. I came in in the middle of this game,
>>>and Comet was part of a pawn & more ahead score wise for several moves, I
>>>couldn't see RxP at all, but that pawn did have the King pinned in place for
>>>several moves.
>>>
>>>Pete
>>
>>Maybe White could build up a fortress,after sacrificing the h-pawn[just keep
>>pushing it].By the way,[D]1k6/8/8/7q/8/5R2/6P1/6K1 w is one such position.
>
>I'm having trouble reading your position. I had Crafty analyze several WTM
>positions before move 99. They allways saw the Rxf3 Qxf3, for several moves
>ahead. I think the problem for Comet must have developed back when black
>getting a pawn to f3 became a posibility, because once that was done, white's
>King was just pinned in place, always one move away from being checkmated.
>
>I want to say that this postion, before 83. Rxf4 is key
>
>[D]5R2/8/4k3/1R6/5ppq/7P/6P1/6K1 w - -
>
>because 83. Rxf4 Qe1+ 84. Rf1 Qc3 85. h4 g3 and now Crafty has got Comet's king
>pinned down to it's first rank. And yet when Crafty's asked to analyze the
>above postion, Crafty also would have 83. Rxf4.
>
>So the problem Comet had, developed long before 99. Rxg3 Qxg3. It might not
>have been possible to search far enough ahead to avoid the inevitable QxR.
>
>Pete
I wonder if chess programs understand the concept of "fortress".
Comet would never lose the game if it understood it. JAFM
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