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Subject: Re: Chessmaster #1 in Mate solutions

Author: Heiner Marxen

Date: 14:05:38 05/24/00

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On May 22, 2000 at 19:01:38, Dann Corbit wrote:

>On May 22, 2000 at 15:52:20, Daniel Chancey wrote:
>
>>I agree that Chessmaster is #1 in finding solutions.     If someone could hold a
>>checkmating contest (The organizers set up positons in which mate can be forced
>>in a number of moves in the middlegame) Chessmaster might be on top.
>>
>>If anyone knows who's the best in 5 min, 15, 30, 60, and 40/120 times in
>>Chessmaster,   tell me.   If not, I'm on it.
>
>Chest would slaughter them.

Sorry to disappoint you, but: no, Chest will not slaughter them here,
since finding *some* forced mate is a quite different job,
than what Chest normally does.

To find that there is no mate in 8, Chest on a PIII/550 with 500MB cache
already burns over 20 minutes for the first of the three positions,
and 48 minutes for the third.

I have plans to introduce a sort of mate finder mode (what leonid
calls "quick logic"), where the attacker is restricted to only
perform checking moves, except for say one quiet move.
Such a job will be much quicker, of course.
In *that* mode, Chest probably slaughters them, but that remains
to be seen.

Cheers,  Heiner


>Bleeding piles of stinking meat, can the flies be far behind?
>
>For the three proposed problems, I suspect that:
>1.  Any chess program in the top 20 will find the key move at 40/2 time
>controls.
>2.  Most pairs of top 20 programs will play the exact best possible sequence
>given the above constraint.  If not, then there may be one or two moves extended
>but the results will be the same.



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