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Subject: Re: The Brick Wall

Author: Michael Henderson

Date: 10:32:01 09/19/04

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On September 19, 2004 at 11:10:14, Stuart Cracraft wrote:

>Hi -- I am looking for 2 or 3 beta testers who would receive
>(full) source code to my program and in return would provide
>input and comments about improving the search. They would
>simply agree not to redistribute it and in fact discard it after
>a week or two of looking at it (and commenting.) The program is in C,
>5000 lines. The search and quiescence routines are 600 lines total.
>
>The reason I am considering this is due to hitting a brick wall at 249/300
>on WAC for several weeks now and knowing there are things I just cannot
>find or go further with. The above score is at 1 second per position on a
>1ghz P3 with a small transposition table. I am told that 270-300 is considered
>"good" for this time control on this test. On this same machine
>at the same time setting, with WAC, Crafty gets 270/300.
>
>The kind of beta testers I'm looking for are experienced programmers
>who have written their own program and it has long since graduated
>from Win-at-Chess as a test suite, perhaps scoring 270 or above at
>1 second per move on a Pentium III 1ghz or above. To them, WAC has
>become ho-hum and in fact they are currently just sitting on their
>laurels without a lot of major advances. Their program has "matured."
>They see themselves as senior chess programmers helping less
>experienced authors.
>
>What I would favor
>
>   1) beta tester with solid program agrees to simultaneous exchange
>      of source code
>
>   --and--
>
>   2) beta tester agrees to seriously review the quiesce(), search(),
>      store(), retrieve(), and iterate() functions.
>
>I am fine to sign any non-disclosure agreement.
>
>This is just an attempt to break through a brick wall.
>
>Stuart

Ok this is really just a joke Stuart, but what results do you get for 2 second
searches? If you do get better results, then a 2x slower solve rate nothing to
be worried about esp if under 2 secs :)

Michael




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