Author: Pete Galati
Date: 17:40:08 04/11/00
Go up one level in this thread
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,1k6/8/8/7q/8/5R2/6P1/6K1 is one such position. JAFM
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
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