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Subject: Unclear sacrifice?

Author: José Carlos

Date: 15:29:53 08/08/02


  Today on ICC:

[D]r3r1k1/3q1ppp/p2p1b2/1ppPn3/4B3/3P2PP/PPPB4/R2Q1RK1 w - - 0 18

  In this position, my program played Rxf6. After a strange game, I believe with
some blunders by white, it ended in a draw.
  What does your program think? Is Rxf6 winning?

  The game (sac on move 18):

[Event "ICC 30 30"]
[Site "Internet Chess Club"]
[Date "2002.08.08"]
[Round "-"]
[White "AvernoX"]
[Black "ArasanX"]
[Result "1/2-1/2"]
[ICCResult "Game drawn because neither player has mating material"]
[WhiteElo "2360"]
[BlackElo "2400"]
[Opening "Sicilian: closed"]
[ECO "B23"]
[NIC "SI.44"]
[Time "08:58:04"]
[TimeControl "1800+30"]

1. Nc3 c5 2. e4 d6 3. Nge2 Nf6 4. g3 e5 5. Bg2 Be7 6. d3 Nc6 7. O-O O-O 8.
h3 a6 9. Be3 b5 10. f4 Qc7 11. fxe5 Nxe5 12. Nf4 Bb7 13. Ncd5 Nxd5 14. Nxd5
Bxd5 15. exd5 Bf6 16. Be4 Rfe8 17. Bd2 Qd7 18. Rxf6 gxf6 19. Qh5 Ng6 20. Bc3
Qe7 21. Rf1 f5 22. Qxf5 b4 23. Bf6 Qf8 24. h4 Qh6 25. Qg4 Qe3+ 26. Kg2 Rxe4
27. dxe4 Re8 28. h5 Rxe4 29. Qf5 Re5 30. Bxe5 Nxe5 31. Rf2 h6 32. Qf4 Qe1
33. g4 Qd1 34. g5 Qxd5+ 35. Kg3 Qh1 36. gxh6 Qxh5 37. Rg2 Ng6 38. Kf2 Qd1
39. h7+ Kg7 40. h8=B+ Kxh8 41. Qxf7 Qd2+ 42. Kg1 Qc1+ 43. Qf1 Qe3+ 44. Kh1
Nf4 45. Rf2 Qe4+ 46. Kh2 Qh7+ 47. Kg3 Nh5+ 48. Kh3 Nf4+ 49. Kg4 Ne6 50. Kg3
Qg6+ 51. Kh2 Ng5 52. Re2 Qh5+ 53. Kg3 Kg7 54. Re7+ Nf7 55. Qf4 Qg6+ 56. Qg4
Qxg4+ 57. Kxg4 Kf6 58. Ra7 Ne5+ 59. Kf4 Ke6 60. Rxa6 Nc4 61. a3 Nxb2 62.
axb4 cxb4 63. Rb6 Nc4 64. Rxb4 d5 65. c3 Kd6 66. Rb8 Ke6 67. Re8+ Kd6 68.
Ra8 Nb6 69. Ra1 Kc5 70. Ra6 Nc4 71. Ra8 Nb6 72. Rb8 Na4 73. Rb3 Kd6 74. Ke3
Ke5 75. Kd2 Nc5 76. Rb8 Ne6 77. Kd3 Kd6 78. Rh8 Ke5 79. Ra8 Nc5+ 80. Ke3 Ne6
81. Ra6 Nc5 82. Ra5 Kd6 83. Rb5 Ne6 84. Rb8 Ng7 85. Rf8 Ne6 86. Rh8 Ke5 87.
Ke2 Nf4+ 88. Kf3 Ne6 89. Ra8 Nc7 90. Rb8 Na6 91. Re8+ Kd6 92. Kf4 Nc5 93.
Rd8+ Ke6 94. Rg8 Na4 95. Rg3 Kd6 96. Rh3 Kc5 97. Rg3 Kc4 98. Rg1 Nxc3 99.
Rh1 d4 100. Ra1 Nd5+ 101. Kg5 Nb4 102. Rh1 d3 103. Ra1 Kd4 104. Rh1 Nd5 105.
Ra1 Ne3 106. Rh1 d2 107. Ra1 Ke5 108. Rh1 Nc4 109. Ra1 Nb2 110. Rh1 Ke4 111.
Ra1 Kd5 112. Rh1 Kc4 113. Ra1 Kb4 114. Rh1 Kc5 115. Ra1 Kd4 116. Rh1 Ke3
117. Ra1 Kf2 118. Rh1 Kg3 119. Ra1 Kf3 120. Rh1 Ke3 121. Ra1 Kd3 122. Rh1
Kc3 123. Ra1 Kc4 124. Rh1 Kd5 125. Ra1 Kc5 126. Rh1 Kd6 127. Ra1 Ke5 128.
Rh1 d1=Q 129. Rxd1 Nxd1 {Game drawn because neither player has mating
material} 1/2-1/2

  José C.

Re: Unclear sacrifice? Bas Hamstra 18:35:41 08/09/02
Re: Unclear sacrifice? Gerd Isenberg 09:36:57 08/09/02
Re: Unclear sacrifice? Steffen Jakob 03:33:01 08/09/02
Re: Unclear sacrifice? Ernst Walet 22:26:27 08/08/02
Re: Unclear sacrifice? Vincent Lejeune 19:38:03 08/08/02
- Re: Unclear sacrifice? Vincent Lejeune 19:48:37 08/08/02
Re: Unclear sacrifice? Dann Corbit 18:51:18 08/08/02
Re: Unclear sacrifice? Art Basham 18:13:00 08/08/02
Gambit TIGER.....plays RxB in only 1 sec. ...!! Art Basham 18:04:19 08/08/02
Brilliant Move.. Art Basham 17:49:51 08/08/02
- Re: Brilliant Move.. Dann Corbit 17:56:36 08/08/02
Re: Unclear sacrifice? Gian-Carlo Pascutto 16:10:36 08/08/02
- Re: Unclear sacrifice? Vincent Lejeune 20:14:54 08/08/02
- Looks sound Gian-Carlo Pascutto 16:32:55 08/08/02
  - Re: Looks sound stuart taylor 17:20:31 08/08/02
    - Re: Looks sound Dann Corbit 17:52:04 08/08/02
Re: Unclear sacrifice? John Merlino 15:38:28 08/08/02

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