Author: Uri Blass
Date: 07:10:53 09/09/02
Go up one level in this thread
On September 08, 2002 at 22:08:02, martin fierz wrote:
>On September 08, 2002 at 20:45:09, Uri Blass wrote:
>
>>[D]r1b4k/1p1p3p/1Pp1p1pP/P3P1P1/5P2/8/6K1/3RB3 b - - 0 72
>>
>>This position happened in the game movei-averno
>>My question is if it is a win for white or a draw.
>>
>>Black may try to get freedom for the pieces by sacrificing a pawn
>>(for example 72...d5)
>>
>>In the game black did not do it and lost.
>>Note that white has also ideas like f5 exf5 Rxf5.
>>
>>The question is if black could save the game and if black could do it what was
>>the losing mistake of black in the game
>
>cool position!
>i think black is lost.
>
>in the game, black loses because the white king reaches c7. once the king is
>there, the threat of a6 ra6 b7 wins the game. my answer to your question is:
>black loses if he never plays d5, as in the game. so will have to play d5 at
>some point and hope that the defensive setup of (after d5 exd6) Bd7,Ra6,Kf7
>holds. however, it seems to me that black gets into zugzwang with white Ke5,
>Ra1, Bb4. if the bishop moves, d7 Bxd7 Kd6 c5 a6! looks winning for white.
>if you never play d5, white has lots of motives including either K->c7 or
>f5-g6-h7 or a6, and it seems that black has no defensive setup to prevent all of
>them.
>
>aloha
> martin
You are right
White seems to be clearly winning and movei could also win faster in previous
stage of the game
Here is the full game and I believe that a long analysis for blunders may find a
lot of blunders.
Interesting game that shows that programs can play for a king attack.
Movei could not finish the game convincingly but being better in tactics can
help here.
Note that movei does not know about king safety but it knows about mobility.
Movei could win clearly faster and wasted a lot of time
Here is the position after move 38
I believe that it is a mate in less than 30 moves but movei need more than 60
moves to mate.
White has an unstoppable king attack (for example by Rf1 and f5).
but programs seem to be weak in tactics and need a long time to see that white
wins material.
Trading queens by 71.Qb6 was also not the best move and Rd6 could win the game
faster.
[D]2b3k1/1pqp1p1p/r1pRr1pP/P1P1P1P1/5P2/2Q5/3B4/4R1K1 w - - 0 39
[Event "WBEC3_3rdDivision"]
[Site "DUAL-P3-933"]
[Date "2002.09.08"]
[Round "18.4"]
[Number "132"]
[White "Movei 0.0.72h"]
[Black "Averno 0.40"]
[Result "1-0"]
[TimeControl "40/2400"]
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. Nxe5 Nxe5 6. d4 Bb4 7. dxe5
Nxe4 8. Qd4 Nxc3 9. Qxb4 Nxb5 10. Qxb5 O-O 11. Bf4 c6 12. Qb4 Qh4 13. O-O
Re8 14. Rfe1 a5 15. Qd2 a4 16. c4 a3 17. bxa3 Rxa3 18. c5 Ra4 19. g3 Qh3
20. f3 Re6 21. Re2 Ra6 22. Qb2 Re8 23. a4 Qh5 24. Qb3 Ra5 25. Rc1 Qh3 26.
Bd2 Ra6 27. a5 Qh5 28. Rce1 Re6 29. Qc3 Qh3 30. Re4 Qf5 31. g4 Qg6 32. h4
Re8 33. Rd4 Qe6 34. Rd6 Qe7 35. g5 Qd8 36. h5 Re6 37. f4 g6 38. h6 Qc7 39.
Qg3 Qd8 40. Rb1 Qe8 41. Qb3 Kh8 42. Bb4 Qe7 43. Qg3 Qd8 44. Qd3 Ra7 45. Qd4
Qf8 46. Rd1 Ra8 47. Bc3 Qe7 48. Qe4 Kg8 49. Qb1 Ra6 50. Qa2 Qf8 51. Kh2 Ra8
52. Qb2 Qd8 53. Kg1 Re8 54. Qa2 Qe7 55. Qd2 Qf8 56. Qd4 Re6 57. Qa4 Kh8 58.
Qc4 Qe7 59. Qd3 Kg8 60. Qc2 Ra6 61. Qd2 Qe8 62. Qe1 Qd8 63. Qf2 Ra8 64. Bb4
Kh8 65. Qa2 Qc7 66. Rxe6 fxe6 67. Be1 Ra6 68. Kh2 Ra8 69. Qb3 Ra6 70. Kg2
Ra8 71. Qb6 Qxb6 72. cxb6 Kg8 73. Bb4 Ra6 74. Kf3 Ra8 75. Ke3 Rb8 76. Rh1
Kf7 77. Rc1 Ra8 78. Ke4 Ra6 79. Rd1 Ke8 80. Ra1 Ra8 81. Kd4 Kd8 82. Kc5 Rb8
83. Rc1 Ke8 84. Kd6 Ra8 85. Kc7 Kf7 86. Bc5 Kg8 87. a6 bxa6 88. Rd1 a5 89.
b7 Bxb7 90. Kxb7 Re8 91. Rxd7 Kh8 92. Be7 Rxe7 93. Rxe7 Kg8 94. Kxc6 Kf8
95. Rxe6 Kf7 96. Kd7 a4 97. Re7+ Kg8 98. Re8+ Kf7 99. e6#
{White mates} 1-0
Uri
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