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Subject: Re: Crafty 16.6 is getting serious !

Author: James T. Walker

Date: 05:59:56 04/08/99

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On April 07, 1999 at 17:07:22, Jeremiah Penery wrote:

>On April 07, 1999 at 16:32:18, James T. Walker wrote:
>
>>For anyone interested in Crafty engines.  The Crafty 16.6 has now played 58
>>games against Fritz 5.32 and Junior 5.0.  The score stands as:
>>
>>Junior 5.0 wins 16 to 14
>>Fritz 5.32 wins 16 to 12
>>
<snip snip>

>One reason Crafty may do better at slower games (and one thing that's always
>bugged me a bit, even if for no real reason :) is that almost all (if not ALL)
>of his testing is done on his super-fast Quad Xeon machine.  If Crafty plays
>better on his machine (at whatever time control), it is analogous to Crafty
>playing better on others' machines at a much longer time control.  In fast
>games, I've seen almost no improvement since 15.20, and I haven't played enough
>slow games to notice any difference.  The version that seems to do best on my
>machine [PII-300] on any time control is a slightly modified 15.20 that I have.
>It almost always beats 16.6, even against things like Dual PII-350 machines.
>These are just my observations, so please do not take this as definite truth. :)
>
>>P.S. I wish Bob was here.
>
>I suspect he's just taking a break for a while, and that he'll come back sooner
>or later. :)
>
>Jeremiah

Hello Jeremiah,
I believe you may be right about Crafty being "Tweaked" on the Quad Xeon.  I
think Bob referred to something about the fact that now on the Quad Crafty was
going at least 9 ply and this helped to cover up some "holes" which Crafty had
at Blitz with less ply searches.  So if true, playing at game/60 would
accomplish the same thing on my PII 333 Mhz.
Jim Walker
P.S.  In my opinion, Crafty 16.6 is a definite improvement over all previous
versions.



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