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Subject: Re: An amazing checkmate. Can your program find it?

Author: Dann Corbit

Date: 17:37:20 12/22/99

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On December 22, 1999 at 20:25:53, Will Singleton wrote:
>On December 22, 1999 at 19:29:45, Dann Corbit wrote:
>
>>On December 22, 1999 at 19:25:24, Will Singleton wrote:
>>[snip]
>>>Just guessing, but that's probably because it's not all that important to find
>>>the shortest mate.  My evidence for such a wild hypothesis is that none actually
>>>find the mate in 9.  Perhaps it would weaken overall play if time was spent on
>>>tracking down the absolute shortest mate in every position.  Any mate, as long
>>>as it is a valid mate, is sufficient.
>>>
>>>One problem with my hypothesis is that, if you don't always (or most always)
>>>find the shortest mate, then you may run the risk of missing a mate forever,
>>>since there may exist always a longer mate than a mate in 1.  But in my
>>>experience, that risk is just about non-existent.
>>
>>Of course, there is no value in finding the shorter mate other than beauty.
>>A mate in 100 is just as good as a mate in 1 if both are sure.  You win.
>>But to find the shorter mate is prettier, don't you think?
>>;-)
>
>Oh, sure. And if a program can play at a top level and also find the shortest
>possible mate, then great.  Empirically, it just doesn't seem to happen.

On the other hand, if you give [for instance] Crafty lots of time, it will
search for shorter and shorter mates.  It is quite good at finding short ones,
but I think this one would take an eternity.



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