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Subject: Snatching defeat from the jaws of victory.

Author: Chris Taylor

Date: 03:29:16 05/01/00


I was checking through the latest moves, in my latest tournament.  On two
computers, and found this gem.

Shredder 4.00 was on a Celeron_500 Hash 96Mb_Eval_32Mb I think it is set up for
the best play, all sounds and commentary off Endgame turbo, all of it.

Fritz 6a  Amd_450 128Mb Hash.  Endgame turbo, all of it. Nimzo7.32.ctg book

The following game with the result? A DRAW? 60 mins each.
I don't know what went wrong, with the Fritz evaluation.  For Shredder to escape
with a draw, is a wonderful swindle!  Or, for Fritz to draw this won ending,
smacks of snatching defeat from the jaws of victory??  Fritz spots mates, tons
of them, and writes these into the pgn file.  Why did it not win?
From move 90 onwards?  The result stands cus white could not press home the
advantage?  Pity to throw away a win though?

Chris Taylor

[Event "Level=Blitz:60'. "]
[Site "Notts"]
[Date "2000.04.28"]
[Round "5"]
[White "Fritz 6a"]
[Black "Shredder 4.00"]
[Result "1/2-1/2"]
[ECO "D38"]
[Annotator "0.13"]
[PlyCount "319"]
[EventDate "2000.04.27"]

{131072kB, Nz7book.ctg. K6_450} 1. d4 {0} 1... Nf6 {1} 2. c4 {0} 2... e6 {1} 3.
Nf3 {0} 3... d5 {1} 4. Nc3 {0} 4... Bb4 {2} 5. Bg5 {0} 5... h6 {1} 6. Bxf6 {0}
6... Qxf6 {1} 7. e3 {0} 7... O-O {1} 8. Be2 {0} 8... c6 {last book move 72} 9.
O-O {0.13/13 163} 9... Nd7 {2} 10. Qb3 {0.13/13 274} 10... Be7 {71} 11. Rfc1 {
0.09/13 116} 11... Nb6 {122} 12. Rc2 {0.09/13 0} 12... Qf5 {141} 13. Rac1 {
0.16/12 73} 13... Rd8 {1} 14. Nb1 {0.16/13 232} 14... Nxc4 {54} 15. Bxc4 {
0.09/14 219} 15... dxc4 {73} 16. Qxc4 {0.09/13 25} 16... Bd7 {63} 17. Nc3 {
0.16/13 192} 17... c5 {65} 18. dxc5 {0.16/11 55} 18... Bxc5 {43} 19. Qh4 {
0.22/11 50} 19... Bb6 {128} 20. b4 {0.09/12 119} 20... Rac8 {58} 21. e4 {
0.13/12 96} 21... Qh7 {2} 22. Kh1 {0.19/11 57} 22... Be8 {103} 23. a3 {
0.00/11 43} 23... Rd7 {8} 24. a4 {0.00/12 151} 24... Bd8 {2} 25. Qf4 {
0.00/11 41} 25... Bc7 {54} 26. Qe3 {0.13/11 36} 26... Bb6 {35} 27. Qe1 {
0.22/12 43} 27... a6 {61} 28. a5 {0.19/13 113} 28... Ba7 {2} 29. b5 {0.22/12 42
} 29... Rdd8 {96} 30. bxa6 {0.22/12 50} 30... bxa6 {28} 31. Nd5 {0.22/12 6}
31... Rxc2 {35} 32. Ne7+ {0.25/14 0} 32... Kh8 {74} 33. Rxc2 {0.25/15 0} 33...
Bb8 {52} 34. Rc8 {0.22/13 0} 34... Rxc8 {7} 35. Nxc8 {0.25/13 4} 35... Bb5 {43}
36. Qb4 {0.09/14 22} 36... Qg8 {57} 37. Nd6 {0.00/15 0} 37... Bxd6 {59} 38.
Qxd6 {0.00/15 0} 38... Qa8 {49} 39. e5 {-0.03/14 0} 39... Be2 {42} 40. Ne1 {
-0.12/14 53} 40... Qe4 {47} 41. Qc5 {0.00/14 11} 41... Bc4 {35} 42. Nf3 {
0.00/15 7} 42... Kh7 {38} 43. Qd4 {-0.19/15 67} 43... Qb1+ {2} 44. Ng1 {
-0.19/16 29} 44... Bb5 {17} 45. Qd2 {-0.19/13 10} 45... Kg6 {36} 46. h3 {
0.00/13 49} 46... Kf5 {42} 47. Qc3 {-0.09/11 26} 47... Qd3 {53} 48. Qc7 {
0.00/12 42} 48... Kg6 {37} 49. Qc1 {-0.19/13 56} 49... Qf1 {50} 50. Qd2 {
0.00/14 0} 50... Bc4 {68} 51. Kh2 {-0.12/14 49} 51... Bd5 {3} 52. f3 {
-0.03/14 47} 52... Qb5 {3} 53. Ne2 {0.09/13 40} 53... Bc4 {2} 54. Qc2+ {
0.19/13 26} 54... f5 {10} 55. Nf4+ {0.19/13 12} 55... Kf7 {33} 56. Qc3 {
0.16/14 43} 56... g5 {70} 57. Nh5 {0.22/13 22} 57... Kg6 {14} 58. Nf6 {
0.34/13 6} 58... Qa4 {134} 59. Qd2 {1.09/13 31} 59... Qb5 {29} 60. Qd6 {
1.41/13 19} 60... Kf7 {46} 61. f4 {1.53/12 0} 61... Bb3 {224} 62. Qb6 {
2.13/11 23} 62... Ba4 {72} 63. Qc7+ {2.47/11 9} 63... Kf8 {25} 64. Nh7+ {
2.47/12 0} 64... Ke8 {5} 65. fxg5 {2.53/11 6} 65... hxg5 {19} 66. Qc8+ {
2.63/12 0} 66... Ke7 {23} 67. Qf8+ {2.66/13 0} 67... Kd7 {2} 68. Qd6+ {
2.63/11 19} 68... Kc8 {3} 69. Qxe6+ {2.63/10 4} 69... Kb7 {65} 70. Nxg5 {
2.72/12 0} 70... Qxa5 {40} 71. Nf7 {2.72/11 0} 71... Kc7 {38} 72. Qe7+ {
2.78/11 0} 72... Kc6 {10} 73. Qf6+ {2.81/10 0} 73... Kc5 {22} 74. Qxf5 {
2.84/9 7} 74... Qd2 {23} 75. e6+ {2.84/11 0} 75... Kb6 {16} 76. h4 {2.91/11 14}
76... Bc6 {31} 77. Qg4 {3.16/12 0} 77... Bb5 {62} 78. h5 {3.16/12 0} 78... Be2
{24} 79. Qf5 {3.13/12 0} 79... Qd4 {22} 80. h6 {4.06/10 10} 80... Bd3 {47} 81.
Qg5 {7.81/12 0} 81... Bg6 {69} 82. h7 {8.91/10 5} 82... Bxh7 {14} 83. e7 {
9.19/11 1} 83... Qe4 {29} 84. Qe5 {10.03/10 0} 84... Bg6 {51} 85. Qxe4 {
10.16/9 7} 85... Bxe4 {34} 86. e8=Q {12.19/11 0} 86... Bh7 {22} 87. Nd8 {
12.34/8 7} 87... Kc5 {64} 88. Qe7+ {13.75/8 4} 88... Kd5 {9} 89. Qxh7 {
13.53/9 0} 89... a5 {20} 90. Qd3+ {#21/8 7} 90... Ke5 {9} 91. Qd4+ {#19/6 1}
91... Kxd4 {4} 92. Nc6+ {#17/4 0} 92... Kc3 {2} 93. Nxa5 {#16/5 0} 93... Kd4 {6
} 94. Nc6+ {#17/4 0} 94... Kd5 {1} 95. Nb4+ {#16/4 0} 95... Ke4 {1} 96. g4 {
#15/5 0} 96... Kf4 {1} 97. Kh3 {#14/5 0} 97... Kg5 {1} 98. Kg3 {#13/5 0} 98...
Kf6 {1} 99. Nd5+ {#14/4 0} 99... Ke5 {2} 100. Nb4 {#13/5 0} 100... Kf6 {2} 101.
Kf4 {#12/5 0} 101... Kg6 {1} 102. g5 {#11/5 0} 102... Kf7 {2} 103. Kf5 {#10/5 0
} 103... Ke7 {1} 104. Nc6+ {#9/4 0} 104... Kf7 {2} 105. g6+ {#8/4 0} 105... Kg7
{1} 106. Ne5 {#7/5 0} 106... Kf8 {2} 107. Nd7+ {#8/4 0} 107... Ke7 {2} 108. Ke5
{#7/5 0} 108... Kxd7 {1} 109. g7 {#6/5 0} 109... Kc6 {2} 110. g8=Q {#5/5 0}
110... Kb5 {1} 111. Qd5+ {#4/4 0} 111... Kb4 {2} 112. Qd4+ {#5/4 0} 112... Kb3
{2} 113. Qd3+ {#4/4 0} 113... Kb4 {2} 114. Qd2+ {#5/4 0} 114... Kb5 {2} 115.
Qd3+ {#5/4 0} 115... Kb4 {2} 116. Qd6+ {#6/4 0} 116... Kc3 {2} 117. Qc5+ {
#5/4 0} 117... Kb2 {2} 118. Qb4+ {#4/4 0} 118... Kc2 {1} 119. Qc4+ {#4/4 0}
119... Kd2 {2} 120. Qd4+ {#5/4 0} 120... Kc2 {2} 121. Qc5+ {#5/4 0} 121... Kb2
{2} 122. Qb5+ {#5/4 0} 122... Kc3 {2} 123. Qc6+ {#6/4 0} 123... Kd3 {2} 124.
Qd5+ {#6/4 0} 124... Kc3 {2} 125. Qd4+ {#5/4 0} 125... Kb3 {2} 126. Qe3+ {
#5/4 0} 126... Kb2 {2} 127. Qd2+ {#4/4 0} 127... Kb3 {2} 128. Qd1+ {#5/4 0}
128... Kb4 {2} 129. Qg4+ {#6/4 0} 129... Kb3 {2} 130. Qe6+ {#6/4 0} 130... Kc3
{2} 131. Qc8+ {#6/4 0} 131... Kd3 {2} 132. Qd7+ {#6/4 0} 132... Kc2 {2} 133.
Qa4+ {#5/4 0} 133... Kd3 {1} 134. Qb3+ {#5/4 0} 134... Ke2 {2} 135. Qc2+ {
#5/4 0} 135... Kf3 {2} 136. Qd3+ {#4/4 0} 136... Kf2 {2} 137. Qd2+ {#4/4 0}
137... Kf3 {2} 138. Qc3+ {#4/4 0} 138... Kg2 {2} 139. Qd2+ {#4/4 0} 139... Kf3
{2} 140. Qf4+ {#4/4 0} 140... Ke2 {2} 141. Qe4+ {#4/4 0} 141... Kd1 {2} 142.
Qd3+ {#4/4 0} 142... Ke1 {2} 143. Qe3+ {#4/4 0} 143... Kd1 {2} 144. Qf3+ {
#5/4 0} 144... Kc2 {2} 145. Qe2+ {#5/4 0} 145... Kc3 {2} 146. Qe3+ {#5/4 0}
146... Kb2 {2} 147. Qd4+ {#5/4 0} 147... Kc2 {2} 148. Qf2+ {#6/4 0} 148... Kc3
{2} 149. Qe1+ {#6/4 0} 149... Kc4 {2} 150. Qc1+ {#6/4 0} 150... Kd3 {2} 151.
Qd1+ {#5/4 0} 151... Ke3 {2} 152. Qd4+ {#5/4 0} 152... Kf3 {2} 153. Qe4+ {
#4/4 0} 153... Kf2 {1} 154. Qf4+ {#4/4 0} 154... Ke2 {2} 155. Qc4+ {#5/4 0}
155... Kd2 {2} 156. Qb4+ {#5/4 0} 156... Kc2 {2} 157. Qe4+ {#6/4 0} 157... Kd1
{2} 158. Qd5+ {#5/4 0} 158... Kc2 {2} 159. Qg2+ {#6/4 0} 159... Kc3 {2} 160.
Qh3+ {#6/4 0} 1/2-1/2



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