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Subject: Re: a mate to solve

Author: Uri Blass

Date: 17:09:51 10/09/01

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On October 09, 2001 at 19:52:47, Slater Wold wrote:

>>None of these searches found a mate in ten.  So far, chest is the only tool that
>>found it (IIRC).
>
>
>In how long??

Chest used 15961 seconds on p200 to find the mate in 10 and it should be
translated to less than 1 hour on fast hardware.

Unfortunately there are programs that have no chance to find it in an hour
because they stop to search when they find a mate.

The smartest program in finding mates based on my experience is chessmaster
but I am not sure if it can find the mate in less than an hour because I believe
that this is not the kind of the mate that it likes(it likes more mates when
there are more pieces in the board).

I did not test chessmaster so I may be wrong.

I also do not have all the 5 piece tablebases and I expected that maybe they can
help in finding the mate in 10 because programs do not have to search after the
last capture that leads to 5 piece tablebase position.

Note that some tablebases like KQRP vs K may be also productive in finding the
mate faster(in the main line of chest it gets KQRP vs K position in a position
when black does mate in 3).

Uri



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