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Subject: Re: Can anyone find this Mate in Eight?

Author: Christophe Theron

Date: 11:13:11 04/08/00

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On April 08, 2000 at 12:40:03, James T. Walker wrote:

>If there is a mate in 8 you may have stopped the search just before it found it.
> A mate in 8 should take no more than a 15 ply search to find.  I will let it
>run on a couple of my programs and let you know if Fritz/Hiarcs can find one.
>Jim Walker


No, a mate in 8 can take a search deeper than 15 plies. I could even take 20 or
30 plies for a given program.

Don't forget that almost no program uses brute force search. When we do a 15
plies search, many lines get pruned well before reaching the 15th ply.


    Christophe



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