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Subject: Re: position

Author: Uri Blass

Date: 02:20:25 06/09/02

Go up one level in this thread


On June 09, 2002 at 03:45:37, Steffen Jakob wrote:

>On June 08, 2002 at 23:47:41, Will Singleton wrote:
>
>>[D]4Q3/1q3ppk/2Nb4/1p4pb/2n5/2P4P/1P3PP1/R5K1 b - -
>>
>>Amateur 2 plays Qc7 at 70 sec.  The first amateur program who can beat this
>>time, or find a better move, gets a copy of Hsu's new book, when available.
>>Must be submitted by the author.
>
>Hossa only needs 0.71 seconds to play Bc5...
>
>    1    +0.77    0.00        2 1... c4xb2
>   <1>   +0.77    0.01       78 1... c4xb2
>    2    +0.79    0.01      151 1... c4xb2 2.a1a8
>   <2>   +0.79    0.02      540 1... c4xb2 2.a1a8
>?   3    +0.32    0.05     3509 1... c4xb2 2.a1a7 b7b6
>   <3>   +0.32    0.07     5298 1... c4xb2 2.a1a7 b7b6
>    4    +0.42    0.09     7150 1... c4xb2 2.a1a7 b7b6 3.e8d7
>   <4>   +0.42    0.16    14256 1... c4xb2 2.a1a7 b7b6 3.e8d7
>  4/5    +0.29    0.71    69737 1... d6c5 2.a1a8 b7b6 3.e8g8 Kg6
>                                4.c6d8 c5xf2 5.Kh2
>   <5>   +0.29    0.86    84966 1... d6c5 2.a1a8 b7b6 3.e8g8 Kg6
>                                4.c6d8 c5xf2 5.Kh2
>
>... and 1.57 seconds to play Nxb2 again ;-)
>
>  2/6    +0.25    1.57   160501 1... c4xb2 2.a1a7 b7b6 3.a7a8 d6f8
>                                4.a8a7
>   <6>   +0.25    2.17   231754 1... c4xb2 2.a1a7 b7b6 3.a7a8 d6f8
>                                4.a8a7
>    7    +0.35    2.80   304129 1... c4xb2 2.a1a7 b7b6 3.a7a8 b2a4
>                                4.e8g8 Kg6 5.c6d8 Kf6
>   <7>   +0.35    4.17   469804 1... c4xb2 2.a1a7 b7b6 3.a7a8 b2a4
>                                4.e8g8 Kg6 5.c6d8 Kf6
>?   8    -0.64   14.22  1605336 1... c4xb2 2.a1a8 b2d1 3.g4 d1xc3
>                                4.a8a7 c3e2 5.Kf1 e2g3 6.f2xg3
>
>... but after 22.66 seconds he switches back to Bc5
>
>?10/8    -0.28   22.66  2549678 1... d6c5 2.a1a8 b7b6 3.Kh1 c4xb2
>                                4.e8h8 Kg6 5.c6e5 Kf5 6.h8xg7 c5xf2
>   <8>   -0.28   24.06  2742508 1... d6c5 2.a1a8 b7b6 3.Kh1 c4xb2
>                                4.e8h8 Kg6 5.c6e5 Kf5 6.h8xg7 c5xf2
>
>... just to change his mind again after 40.23 seconds.
>
>  2/9    -0.15   40.23  4628391 1... c4xb2 2.a1a8 Kh6 3.c6d4 d6e5
>                                4.g4 h5g6 5.e8h8 g6h7 6.d4f5 Kg6
>   <9>   -0.15   47.76  5519494 1... c4xb2 2.a1a8 Kh6 3.c6d4 d6e5
>                                4.g4 h5g6 5.e8h8 g6h7 6.d4f5 Kg6
>   10    -0.33    1:04  7443255 1... c4xb2 2.a1a8 g4 3.h3xg4 h5xg4
>                                4.c6d4 b2d1 5.e8h8 Kg6 6.a8d8 d6g3
>                                7.f2xg3 d1xc3
>  <10>   -0.33    2:04 13989196 1... c4xb2 2.a1a8 g4 3.h3xg4 h5xg4
>                                4.c6d4 b2d1 5.e8h8 Kg6 6.a8d8 d6g3
>                                7.f2xg3 d1xc3
>   11    -0.12    2:48 18750730 1... c4xb2 2.a1a8 g4 3.h3xg4 h5xg4
>                                4.e8e4 f5 5.e4e8 b2d1 6.e8h8 Kg6
>                                7.c6a5 b7e4
>
>Unfortunately Hossa doesnt change his mind in reasonable amount of time again.

Interesting to know how much time it needs to find g4 after Nxb2?

I think that after Nxb2 it should find g4 with a +2 score if you give it enough
time.

Movei after Nxb2 can fail high on g4 in 2 minutes on p800(16 mbytes hash was
used).

After 4 minutes it can solve the fail high with 2.20 pawns score for white.

I did not save the analysis and the times are only an estimate based on looking
at movei's analysis.

Uri



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