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Subject: Re: Guys, don't bother!

Author: Dann Corbit

Date: 11:33:05 08/30/01

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On August 30, 2001 at 14:29:12, Roy Eassa wrote:

>Don't bother having any program ponder for hours or days on Nolot #9.  Unless
>you can let them ponder for a few HUNDRED THOUSAND hours.  Because the solution
>is so tactically deep, that's what you'd have to try (or maybe MILLIONS of
>hours).  Even if you "force" today's top PC programs to see the first several
>plys, they still don't see that white is winning, at least within a few hours.

Different programs have different scoring on eval, and different shaped search
trees.  Clever extensions and different null-move strategies might make a
gigantic difference.

>And doesn't each additional ply take more time than all the previous plies
>combined?

Usually.  Doesn't have to, though.  Could be that some move is forced and the
next ply is free, for instance.  Usually, it will be a rough multiplication of
the branching factor in time from the previous move, of course.



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