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Subject: Re: Chessmaster endgame blunder

Author: Mihaly Szalai

Date: 14:38:40 07/14/04

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On July 14, 2004 at 16:40:28, John Merlino wrote:

>On July 14, 2004 at 15:53:17, Mihaly Szalai wrote:
>
>>Here is the game but don't criticize it too much, I was in time trouble and
>>damn nearly managed to miss the win in the superior position.
>>
>>Mihaly
>>
>>[Event "15'+5"]
>>[Site "?"]
>>[Date "2004.06.20"]
>>[Round "?"]
>>[White "Misi"]
>>[Black "Chessmaster"]
>>[Result "1-0"]
>>[PlyCount "151"]
>>[EventDate "2004.??.??"]
>>[TimeControl "900+5"]
>>
>>1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nb3 e6 8.
>>Be3 Qc7 9. Qe2 a6 10. f4 b5 11. Bd3 Be7 12. g4 O-O 13. g5 Nd7 14. O-O Nc5 15.
>>Nxc5 dxc5 16. e5 Nb4 17. Bxh7+ Kxh7 18. Qh5+ Kg8 19. Rf3 g6 20. Qh4 f5 21. gxf6
>>Bxf6 22. exf6 e5 23. a3 Nc6 24. Bxc5 Rd8 25. Ne4 Bf5 26. Ng5 Rd7 27. Re1 Rc8
>>28. f7+ Rxf7 29. Nxf7 Qxf7 30. fxe5 Qd5 31. Rxf5 gxf5 32. Qg5+ Kh8 33. Qh6+ Kg8
>>34. Bb6 Ne7 35. e6 f4 36. Qxf4 Qh5 37. Kh1 Qd5+ 38. Re4 Qf5 39. Qxf5 Nxf5 40.
>>e7 Re8 41. Bd8 Kf7 42. Kg2 Rh8 43. e8=Q+ Rxe8 44. Rxe8 Kxe8 45. Bb6 Kd7 46. c3
>>Nd6 47. b3 Ne4 48. Bd4 Nd2 49. a4 Nxb3 50. axb5 Nxd4 51. bxa6 Nc6 52. h4 Ke6
>>53. Kg3 Kf5 54. h5 Na7 55. h6 Kg6 56. Kf4 Kxh6 57. Ke5 Kg6 58. c4 Kg5 59. Kd5
>>Kf6 60. Kd6 Kf7 61. Kc7 Ke6 62. Kb7 Kd7 63. Kxa7 Kc7 64. c5 Kc6 65. Kb8 Kxc5
>>66. a7 Kd4 67. a8=Q Ke3 68. Kc7 Kf4 69. Kd6 Ke3 70. Ke5 Kd3 71. Qa4 Ke2 72. Qb3
>>Kf1 73. Qc2 Kg1 74. Kf4 Kh1 75. Kg3 Kg1 76. Qc1# 1-0
>
>Sorry that I missed your mention of 51.bxa6. It appears that you are correct
>about 50...Nxd4, but it looks like Chessmaster would have to get up to at least
>depth 25 from that position to see that it is a worse move than 50...axb5. On my
>AMD2500, this would likely take well over an hour.

I found no engine with egtb probing playing 50...Nxd4.

>
>And it sure doesn't look like you made any mistakes that would cause me to
>criticize. The only moves that The King disagrees with on analysis are 54.h5 and
>55.h6, in both cases preferring Kf3. But I doubt that made any difference.
>

I thought of earlier doubious moves eg. why I queened the pawn in move 43,
and these 46.c3 47.b3 49.a4 pawn moves are really a shame... and ruined my
position so I'm sure that I wouldn't be able to win after 50...axb5.

Best
Mihaly

>jm



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