Author: Howard Exner
Date: 08:43:05 08/02/98
Go up one level in this thread
On August 01, 1998 at 21:10:27, Mark Young wrote:
>On August 01, 1998 at 10:38:35, Howard Exner wrote:
>
>>On July 31, 1998 at 15:06:30, Mark Young wrote:
>>
>>>Results of games 1 thur 5
>>>
>>>Crafty 0 0 0 0 0
>>>
>>>Fritz5 1 1 1 1 1
>>>
>>>This game is a good example of Fritz 5 ability to attack queenside, for anyone
>>>who has not seen it before. Capped off with a nice long-term pawn sac to cash in
>>>its positional plus.
>>>
>>>
>>>Game 5
>>>[Event "?"]
>>>[Site "?"]
>>>[Date "????.??.??"]
>>>[Round "?"]
>>>[White "Crafty 15.18 Ppro200 512m ram"]
>>>[Black "Fritz 5 P II 300 64mb ram"]
>>>[Result "0-1"]
>>>[ECO "B31"]
>>>[Annotator "Young,M"]
>>>[PlyCount "164"]
>>>
>>>{46144kB, f5book.ctg
>>>} 1. e4 {0} 1... c5 {0} 2. Nf3 {42} 2... Nc6 {0} 3. Bb5 {
>>>71} 3... g6 {0} 4. O-O {41} 4... Bg7 {0} 5. Re1 {31} 5... Nf6 {0} 6. Nc3 {38}
>>>6... O-O {0} 7. e5 {32} 7... Ne8 {0} 8. d3 {44} 8... Nc7 {0} 9. Bc4 {67} 9...
>>>Ne6 {0} 10. Bd2 {356} 10... b6 {0.03/12 336} 11. Nd5 {52} 11... Bb7 {
>>>-0.13/12 543} 12. a3 {313} 12... a6 {-0.03/11 259} 13. c3 {301} 13... b5 {
>>>-0.09/13 478} 14. Ba2 {32} 14... a5 {0.03/12 397} 15. Nf4 {298} 15... a4 {
>>>-0.06/12 399} 16. Bd5 {44} 16... Qc7 {-0.03/11 366} 17. Rc1 {308} 17... Na5 {
>>>-0.16/12 337} 18. Bxb7 {302} 18... Qxb7 {-0.25/13 1} 19. Rc2 {272} 19... Nb3 {
>>>-0.19/12 185} 20. Be3 {87} 20... Rfc8 {-0.13/11 130} 21. c4 {338} 21... Nxf4 {
>>>-0.25/12 194} 22. Bxf4 {296} 22... b4 {-0.22/13 66} 23. Qe2 {313} 23... Ra6 {
>>>-0.22/11 259} 24. axb4 {303} 24... cxb4 {-0.25/13 376} 25. Rd1 {137} 25... Rac6
>>>{-0.28/11 222} 26. Rb1 {311} 26... d6 {-0.28/12 342} 27. Qe4 {276} 27... dxe5 {
>>>-0.66/12 261} 28. Bxe5 {274} 28... f6 {-0.56/13 34} 29. Bf4 {41} 29... Qd7 {
>>>-0.84/13 336} 30. Qe2 {342} 30... e5 {-0.91/13 205} 31. Bd2 {50} 31... Bf8 {
>>>-0.84/12 112} 32. Be3 {313} 32... Bc5 {-1.00/13 14} 33. Ne1 {255} 33... Rd6 {
>>>-0.97/13 25} 34. Qf3 {271} 34... Bxe3 {-1.16/13 264} 35. Qxe3 {13} 35... Nc5 {
>>>-1.03/13 364} 36. Rd1 {300} 36... Rd4 {-1.03/12 1} 37. f3 {257} 37... Nb3 {
>>>-0.97/13 383} 38. Rb1 {277} 38... Rc5 {-1.06/14 30} 39. Re2 {319} 39... Qf5 {
>>>-0.97/13 382} 40. Qf2 {139} 40... Rc8 {-0.94/13 148} 41. Re3 {21} 41... Rd6 {
>>>-0.91/13 303} 42. Qe2 {271} 42... Nd4 {-0.88/13 70} 43. Qd2 {411} 43... Qg5 {
>>>-0.75/12 240} 44. Qf2 {19} 44... Ne6 {-0.72/11 170} 45. Ra1 {81} 45... Nc5 {
>>>-0.88/13 108} 46. Rd1 {209} 46... Rcd8 {-0.88/13 375} 47. Qe2 {8} 47... R6d7 {
>>>-0.97/13 163} 48. Kh1 {363} 48... Ne6 {-0.84/12 124} 49. Qf2 {354} 49... Rd4 {
>>>-0.81/13 12} 50. Re4 {234} 50... Nc5 {-0.88/14 163} 51. Rxd4 {279} 51... Rxd4 {
>>>-0.75/14 1} 52. Kg1 {245} 52... h6 {-0.75/14 283} 53. Qe2 {265} 53... b3 {
>>>-0.88/14 250} 54. Kf1 {29} 54... Kg7 {-0.78/13 237} 55. Rd2 {337} 55... Qh4 {
>>>-0.88/14 148} 56. Kg1 {263} 56... Rd8 {-0.78/14 105} 57. Qe3 {252} 57... Qd4 {
>>>-0.81/16 42} 58. Qxd4 {246} 58... Rxd4 {-0.78/13 1} 59. Rd1 {254} 59... Kf7 {
>>>-0.75/13 151} 60. Kf2 {243} 60... g5 {-0.78/13 121} 61. g3 {192} 61... h5 {
>>>-0.78/13 133} 62. Ke2 {31} 62... Ke8 {-0.53/12 267} 63. Rd2 {254} 63... f5 {
>>>-0.69/12 263} 64. Rd1 {254} 64... Kd8 {-0.78/12 100} 65. Ng2 {385} 65... a3 {
>>>-0.72/13 310} 66. bxa3 {159} 66... f4 {-0.50/12 136} 67. Ne1 {245}
>>
>>At this point of the game instead of Ne1 the move gxf4 suggests itself.
>>This way the passed h pawn does not become a reality for black.
>>
>It does seem there should be a way to draw this, but position is like a Chinese
>finger puzzle. There might be some subtle defense that I am just over looking,
>but I was unable to save the game for white. I let fritz have a shot at it and
>here’s what it came up with.
>
>67. gxf4 exf4 68. h3 b2 69. Ne1 g4 70. hxg4 hxg4 71. Rb1 gxf3+ 72. Kxf3 Na4 73.
>Kg4 Rd7 74. Nf3 Rg7+ 75. Kxf4 Rg2 76. Rh1 Nc3
Since this is a solid winning line for black also, it makes the entire sequence
of moves starting with 65. ... a3 all that more attractive. In the analysis
you give 67. ... exf4 as the proper recapture (not gxf4). This recapture
would be a routine matter for humans as they would see, without much
calculating,
that exf4 gives a kingside pawn majority. Computers must calculate instead
of "seeing" that common pattern. I find this an instructive ending.
It's interesting how calculating moves and positional knowledge are
intertwined. Computers often resolve or mimic positional knowledge
by simply going deep in their calculating. We on the other hand rely
on positional understanding to assist us in "seeing" the course the game
may take.
>
>
>
>> 67... fxg3 {
>>>-0.72/13 515} 68. hxg3 {444} 68... Kc7 {-0.81/13 0} 69. Kd2 {587} 69... h4 {
>>>-0.94/14 392} 70. gxh4 {14} 70... gxh4 {-1.41/13 83} 71. Kc1 {31} 71... h3 {
>>>-1.56/13 115} 72. Rd2 {402} 72... Na4 {-3.69/15 1} 73. Kb1 {271} 73... b2 {
>>>-5.09/14 237} 74. Rc2 {242} 74... Rd8 {-7.16/14 110} 75. c5 {101} 75... Rb8 {
>>>-10.47/14 96} 76. f4 {501} 76... Rb3 {-12.16/13 77} 77. Rc4 {407} 77... h2 {
>>>-#8/9 6} 78. Rxa4 {275} 78... h1=Q {-#7/7 0} 79. Ra7+ {366} 79... Kb8 {-#4/6 2}
>>>80. Ra8+ {91} 80... Kxa8 {-#3/3 1} 81. fxe5 {204} 81... Qxe1+ {-#2/1 1} 82. Kc2
>>>{190} 82... b1=Q# {-#1/1 1} 0-1
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