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Subject: Re: i don't understand this position as analyzed by F8

Author: Uri Blass

Date: 10:37:26 06/12/04

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On June 12, 2004 at 09:56:10, Bryan Hofmann wrote:

>On June 12, 2004 at 09:43:04, Martin Grabriel wrote:
>
>>[d]8/p3k3/1p4p1/5b2/r6P/3pK3/4p3/2R5 w - - 0 1
>>
>>
>>
>>At the above position, I can't understand why Fritz8 and Ruffian 105 both
>>analyzed the position as 0.00 with the recommended move 52. Kf3.
>>
>>
>>Obviously Black is winning and Shredder 8 shows it is so.
>>There was no 3-fold rep as the pgn leading to the position (which is after  move
>>51) is as follows:
>>
>>[Event ""]
>>[Site ""]
>>[Date ""]
>>[Round "?"]
>>[White ""]
>>[Black ""]
>>[Result "0-1"]
>>[ECO "B20"]
>>[WhiteElo "1481"]
>>[BlackElo "1499"]
>>[PlyCount "120"]
>>[EventDate "2004.??.??"]
>>
>>1. e4 c5 2. Bc4 e6 3. Qf3 Nc6 4. Nh3 Ne5 5. Qf4 Nxc4 6. Ng5 Qe7 7. d3 e5 8. Qg3
>>Nd6 9. O-O Nf6 10. h3 Nb5 11. Be3 Nd4 12. Bxd4 cxd4 13. Na3 Nh5 14. Qh4 g6 15.
>>Nf3 Qxh4 16. Nxh4 Bxa3 17. bxa3 d6 18. Nf3 Nf4 19. Nd2 Ne2+ 20. Kh2 Nc3 21. Nc4
>>Ke7 22. f4 f6 23. g4 b6 24. g5 Rf8 25. fxe5 dxe5 26. gxf6+ Rxf6 27. Rxf6 Kxf6
>>28. Rf1+ Ke6 29. Ra1 Nb5 30. a4 Nd6 31. Nd2 Bd7 32. Nf3 Bxa4 33. Ng5+ Ke7 34.
>>Nxh7 Bxc2 35. Rc1 Rc8 36. Rf1 Bxd3 37. Rg1 Bxe4 38. Ng5 Bf5 39. a4 Rc2+ 40. Kg3
>>Ra2 41. Re1 e4 42. a5 Rxa5 43. Kf4 e3 44. h4 Nf7 45. Nf3 Ra4 46. Rc1 e2 47. Ne1
>>d3+ 48. Ke3 Ne5 49. Nf3 Nxf3 50. Kxf3 Bg4+ 51. Ke3 Bf5 52. Kd2 Ra2+ 53. Ke3 d2
>>54. Rc7+ Kd8 55. Kxe2 Kxc7 56. h5 Bg4+ 57. Ke3 d1=Q 58. hxg6 Qf3+ 59. Kd4 Ra4+
>>60. Ke5 Qf5# 0-1
>
>
>It would appear that your not using EGTBs. With Ruffian 1.0.5 and 5 man tables I
>get
>
>Ruffian 1.0.5  UCI 150 MB:
> 1   00:00 -12.67   h5
> 1   00:00 -11.68   Re1
> 2   00:00 -13.53   Re1 Rxh4
> 2   00:00 -12.80   Rc7+ Kd6 Rc1
> 2   00:00 -12.33   Rh1 a6
> 3   00:00 -13.43   Rh1 Rxh4 Rxh4 e1Q+
> 3   00:00 -12.64   Re1 Rxh4 Rxe2 dxe2 Kxe2
> 3   00:00 -12.25   Kd2 Rxh4 Rc7+ Bd7 Rxa7
> 4   00:00 -12.30   Kd2 Rxh4 Ra1 Be4 Rxa7+
> 5   00:00 -13.28   Kd2 Ra2+ Ke3 d2 Rc7+ Kd6 Rc6+ Kxc6 Kxe2
> 5   00:00 -12.83   Re1 Rxh4 Rxe2 dxe2 Kxe2 g5
> 6   00:00 -12.88   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 Bd3+ Kd2 g5
> 6   00:00 -13.38   h5 gxh5 Re1 Ra2 Kf4 Bg4
> 6   00:00 -12.88   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 Bd3+ Kd2 g5
> 7   00:00 -12.88   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 Bd3+ Kd2 g5 Kc3
> 8   00:00 -12.92   Re1 Rxh4 Kd2 Rc4 Rxe2+ dxe2 Kxe2 a5 Ke3 b5
> 9   00:00 -13.35   Re1 Rxh4 Kd2 a5 Rxe2+ dxe2 Kxe2 a4 Kd2 Rh2+ Kc3 b5
>10   00:00 -13.36   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 a5 Kd2 Rd3+ Kc1 g5 Kc2 g4
>11   00:00 -13.56   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 a5 Kd2 Rd3+ Kc2 b5 Kb2 b4
>Kc2
>12   00:01 -13.71   Re1 Rxh4 Kd2 a5 Rc1 Rb4 Ke3 Rc4 Re1 Rc2 Kf4 Rc4+ Ke3
>13   00:10 -13.97   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 a5 Kd2 Rd3+ Kc2 b5 Kb2 b4
>Kc1 a4 Kc2
>14   00:20 -14.06   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 a5 Kd2 Rd3+ Kc2 b5 Kb2 b4
>Kc2 b3+ Kc1 Rd1+ Kb2 a4
>15+  00:31 -13.71   Re1
>15   00:32 -14.29   Re1 Rxh4 Rxe2 Rh3+ Kd2+ dxe2 Kxe2 a5 Kd2 Rd3+ Kc2 b5 Kb2 b4
>Kc2 b3+
>16+  00:44 -13.94   Re1
>16-  00:49 -14.64   Re1
>16   00:50 -14.91   Re1 Rxh4 Kd2 a5 Rc1 Rh2 Re1 a4 Kc3 a3 Ra1 b5 Kd2 b4 Rb1 e1Q+
>Kxe1 d2+ Kd1 Bxb1

It is clear that Egtb are not relevant here.

programs may show 0.00 with the game simply because the main target of
programmers is usually comp-comp game and not analysis.

Uri
Uri



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