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Subject: Re: Open Source Chess Programs

Author: Dann Corbit

Date: 09:52:15 06/08/05

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On June 08, 2005 at 05:33:38, Pedro Castro wrote:

>By the way Dann, I that your you know and help with the project of firstchess.
>In DanaSah I am based on the generator of moves of firstchess, I find express
>although it has not been using mailbox and for many comparisons, the function of
>verification of a square if it is attacked is very many better than the one of
>TSCP, I have proven to implant in TSCP and gives to the program between a 50%
>and 75% more of speed (in my pc pentium 4 2400 middle game of 300.000 nodes to
>450.000 or plus), to see to believe.
>
>I could present code but before I would like to comment it to Tom Kerrigan, I
>believe that by copyright I cannot make modifications in his program and present
>it, I wanted to speak with Tom, but not like contacting with him, the direction
>of its page Web does not work.

I did some things to make TSCP much faster, but Tom was not interested because
it complicated the code.

Just storing a king position for check testing will make a big difference, and a
piece list more than doubles the speed.



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