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Subject: qsearch questions

Author: Mike Adams

Date: 12:58:44 12/03/02


I'm trying to understand the difference between reducing the overhead in qsearch
and futility pruning.  On ply one of qsearch is it best to try all captures that
can possibly change alpha without say using a SEE? And if the positional bonuses
relative to a capture can only change by a max of say 100 can you safely say
that if the value of the captured pieces plus the evaluation value you have when
you entered qsearch plus 100 is less than alpha it need not be played? Should
there also be a beta test? While i want speed an accurate qsearch is more
important to me than a fast one.  My understanding is whatever you capture on
ply 1 of qsearch you never improve your score beyond that.  On ply 3 of qsearch
if you have an even better capture your opponent will pass to move on ply 2.
thanks Mike Adams.



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