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Subject: Re: A Question for Dr. Hyatt

Author: Jeremiah Penery

Date: 02:36:49 03/02/00

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On March 01, 2000 at 22:38:00, Tina Long wrote:

>How well does Crafty "stack up" against the best commercials in say 1 hour
>analysis of a position?

There is at least a tiny bit of data that says it might be _better_ at this.
Ed's "Chess in 2010" matches, with time controls of 1hr/move.  In the games Ed
had played, I think Crafty had a score of 3.5/4, with wins against both Hiarcs
and Rebel. (IIRC)

> (on a PII 400)  (I've thought it didn't, because I
>thought it wasn't selective-searching enough,

For long analysis, this can sometimes be better, since you don't prune away so
many lines away early that can later turn up to be important.  It depends on
exactly what you want to do with it, I guess.  YMMV. :)

> I also thought it wasn't using
>hash -I'm more than happy to be told I'm wrong).

I'm not quite sure what you mean here.  Crafty doesn't need gigantic hash sizes
(like Fritz, for instance), because it uses better replacement [than Fritz].
But bigger hash is always better for long analysis, and Crafty definitely uses
it.



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