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Subject: Re: 6 AND 7 pieces ending database?

Author: Alvaro Polo

Date: 09:14:24 11/18/97

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On November 17, 1997 at 14:54:14, Robert Hyatt wrote:


>
>not quite.  It is proportional to distance to mate more than it is to
>the
>number of pieces.  IE KQQ vs KNN is probably going to be pretty quick to
>compute, measured in days.  While KQP vs KQP or some such might be
>horrible.

There is perhaps a shorter solution. Instead of trying to be optimal
one could look for a solution based in 5-man databases. That is, if from
KQQ vs KNN a sequence of moves could be found which would lead to a
win in KQ vs KN there would be no need to calculate further combinations
of moves. The first move would be a Queen takes Knight sacrifice and
that
would be all. Maybe the same technique could be applied to simplify
many other 6-man endings. Clearly KQP vs KQP is not one of them.
In any case, it is proportional to distance to 5-man database rather
than
mate.



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