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Subject: Re: Deep-Blue vs Kasparov, 2.game,

Author: Dave Gomboc

Date: 16:15:59 05/22/00

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On May 22, 2000 at 09:44:38, Robert Hyatt wrote:

>Again I agree.  But I believe our definitions of "enough" are way different.
>IE I know a person that tried to have crafty solve "wild 7".  This is a king
>and three pawns vs king and three pawns ending with a well-known way to force
>a win by white.  White has pawns at a2/b2/c2, black has pawns at f7/g7/h7.
>White's king is at d1.  Black's king is at e8.  White to play and win.  He
>played thousands of games.  learning by "position" as crafty does it, is hurt
>by something known as "a local maxima" which stifles learning beyond that
>point.  This position is way easier to solve than the DB position, yet it seems
>impervious to learning approaches.  Ande search.  Yet it is so easy for a human,
>once he understands the idea. (Hint:  it is all about zugzwang).

The "wild 7" position is not impervious to search, given appropriate evaluation
terms.  Murray Cambell's Ph.D. thesis documents his program solving a similar,
if not identical, position, and many other, even more difficult king and pawn
endings.

Dave



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