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Subject: Re: Some facts about Deep Thought / Deep Blue

Author: Robert Hyatt

Date: 20:10:56 08/29/01

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On August 29, 2001 at 17:17:45, Gian-Carlo Pascutto wrote:

>On August 29, 2001 at 15:43:32, Robert Hyatt wrote:
>
>>I discovered, by bits and pieces, some of the knowledge in deep
>>thought, and it was not "small" at all.  Everyone assumes that the micros are
>>much smarter...
>
>There is no need to 'assume' or 'discover' or speculate about
>anything.
>
>Go to Tim Mann's site and download the Deep Thought eval tuner.
>It includes the full evaluation of Deep Thought and the set of
>weights used in the 1988 US Open.
>
>--
>GCP


The "weights" don't always reveal what they stand for.  I've had the DT
code for at least 2 years.  It isn't new.  But I can give you the weights I
use in Crafty and they don't tell you _what_ I am actually doing with them,
only the numbers I am using.  Their bishop of opposite color + pawn ending
evaluation was _very_ good.  Once Hsu explained it to me at an ACM event.
You won't find that explanation of how it works in the stuff you reference.

Which is a shame, actually.  There's a lot in the thing that we won't ever
know in great detail.



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