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Subject: Re: Hossa - Crafty : bishop endgame

Author: Djordje Vidanovic

Date: 03:14:08 10/27/99

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On October 27, 1999 at 04:56:00, Peter McKenzie wrote:

>On October 27, 1999 at 02:59:15, Steffen Jakob wrote:
>
>>Hi all!
>>
>>Hossa played the following blitz game (5 3 u) against Crafty at ICC (thanx Bob
>>for allowing Hossa to play as many games as I want ;-):
>>
>>[Event "ICS unrated blitz match"]
>>[Site "204.178.125.65"]
>>[Date "1999.10.27"]
>>[Round "-"]
>>[White "Hossa"]
>>[Black "crafty"]
>>[Result "1/2-1/2"]
>>[WhiteElo "2398"]
>>[BlackElo "3251"]
>>[TimeControl "300+3"]
>>
>>1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Bf5 6. Be2 Na6 7. O-O Nb4
>>8. a3 O-O-O 9. Bf4 Nd5 10. Nxd5 Qxd5 11. c4 Qe4 12. Be3 Nh6 13. Ne5 e6 14.
>>Bf3 Qh4 15. Bxh6 gxh6 16. Nxf7 Rxd4 17. Qa4 Rxc4 18. Qxa7 Ra4 19. Qe3 Rg8
>>20. Rfd1 Kc7 21. Qe5+ Kb6 22. Rd7 Qf4 23. Rxb7+ Kxb7 24. Qb5+ Ka7 25. Bxc6
>>Qb4 26. Qxb4 Rxb4 27. axb4+ Kb6 28. b5 Bg7 29. Nd6 Kc5 30. Nxf5 exf5 31.
>>Rb1 Rd8 32. b4+ Kb6 33. Kf1 Rd4 34. Rb3 f4 35. Ke2 Rc4 36. Rd3 Bd4 37. Rf3
>>Bf6 38. Rh3 Bg7 39. Kf3 Rc3+ 40. Kxf4 Rxh3 41. gxh3 Bd4 42. f3 Bc3 43. h4
>>Bxb4 44. Kf5 Bd6 45. h3 Kc7 46. Kf6 Bf4 47. Kg7 Kd6 48. Kxh7 Be3 49. Kg6
>>Ke6 50. b6 Bxb6 51. Kxh6 Kf5 52. Bd7+ Kf6 53. Kh7 Bc7 54. h5 Kg5 55. h6 Bf4
>>56. h4+ Kf6 57. Bc6 Bd2 58. Be4 Kf7 59. Bd5+ Kf6 60. Bc4 Bf4 61. Bd5 Bd2
>>62. Bc4 Bf4 63. Bd5 Bd2
>>{Game drawn by repetition} 1/2-1/2
>>
>>Hossa should have won this game. The problem was that he always thought that he
>>had a big advantage and therefore exchanged to a drawn endgame. Hossa had 3
>>pawns and one bishop and Crafty only one bishop. Unfortunately the bishops where
>>on different colored squares. Nevertheless Hossa thought it had a big advantage.
>>What does your program say e.g. about the position after e.g. move #51:
>>
>>8/8/1bB4K/5k2/7P/5P1P/8/8 w - - 0 52
>
>A quick 10ply search by LambChop gives a score of +1.6 pawns to white.  So I
>have some smarts in there that reduce the score quite a bit, but not enough to
>know its drawn.
>
>>
>>Best wishes,
>>Steffen.

Steffen, Peter, hi. An interesting position for a program.  I had time only to
try Shredder 2, Zarkov 4.5 and Fritz 6 (I let them ponder for a minute of so
each).  Zarkov thinks it's ahead by 3.9, Shredder by 2.5, and Fritz 6 by 1.8...
Appears that Chop and Fritz have both a pretty good evaluation of this position.

Regards,

Djordje



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