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Subject: Re: Mates in 30

Author: Bruce Moreland

Date: 09:34:22 02/16/99

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On February 16, 1999 at 12:32:16, Bruce Moreland wrote:

>
>On February 16, 1999 at 10:22:50, Steve Maughan wrote:
>
>>The position quoted is a famous one - it can be solved with the simple heuristic
>>of extending all move that give check with only one reply and extend all
>>position that only have one move.  The reason the top programs do not get it is
>>that they have cut off the search at some high value to limit the tree in normal
>>position.  This is certainly not a normal position!
>
>This is completely true.  If I de-constrain my single-response extension, my
>program scores this as mate in 0.090 seconds.
>
>It would not normally return a mate score, although it would typically find the
>move that leads to mate.
>
>bruce

Actually I am wrong, the unmodified version would normally find this in about 32
seconds (P6/200).

bruce



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