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Subject: Re: Result of chess genius 2 on the second diagram

Author: ALI MIRAFZALI

Date: 14:58:45 11/12/02

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On November 12, 2002 at 17:46:12, Uri Blass wrote:

>On November 12, 2002 at 16:40:49, ALI MIRAFZALI wrote:
>
>>[D]4r1k1/pp3p2/1q1p2P1/6Q1/2p2Pn1/P5R1/1P2b1P1/5R1K b
>>In the above Position 1....Be2xf1 is incorrect.How long does it take your
>>program to avoid making this move?
>
>Movei needs less than a minute.
>
>>[D]1qr2rk1/1b2bpp1/pp2pn1p/1N1nN3/2BP4/P5R1/1P2QPPP/2B2RK1 b
>>In the above diagram 1....a6xb5 is incorrect. Same Question.
>
>here movei can see negative score for axb5 in less than a minute(0.01 pawn for
>white) but it does not find something better than axb5 in a short time.
>
>The score continues to go down to 0.25 pawns for white at depth 12
>but movei does not find something better at that depth
>
>Here is the score at the end of depth 12 and at the beginning of depth 13.
>
>depth=12 -0.25 a6b5 c1h6 f6e8 c4b5 d5f6 b5e8 f6e8 e5d7 b8d6 d7f8 g8f8 e2d2 e6e5
>Nodes: 131237325 NPS: 117842
>Time: 00:18:33.67
>
>depth=13 -0.31 a6b5 c1h6 d5f4 g3g7 g8h8 e2e3 f6h5 g7f7 b5c4 h6f8 e7f8 e5d7 b8d6
>d7f8 b7g2
>Nodes: 188222338 NPS: 119753
>Time: 00:26:11.75
>
>This is not the latest movei but only almost the latest movei and the latest
>movei that is in another computer use experimental pruning and it is now working
>on the GCP test suite.
>
>I have some evidence that the experimental pruning is probably productive
>in very fast bullet games and I believe that it is also productive
>in longer time control but I need to do more tests to be sure.
>
>The best version so far in the GCP test suite solved 148 in the GCP test suite
>in 5 minutes per move on 1000Mhz and it used experimental pruning.
>
>I hope that I improved the pruning rules in the last version and I hope to
>continue to improve them in the future.
>
>Uri
Hi
On a computer with an intel pentium 3 processor it takes Genius2  39 minuties
25 seconds to avoid 1...a6xb5. This is the PV at ply 9 1...g8h8 2.b5c3 d5xc3
3.b2xc3 e7d6 4.c4xa6 b7xa6.No other information about this search available.



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