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Subject: Re: eval short-circut

Author: Jon Dart

Date: 09:22:13 11/30/01

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> I was thinking furthermore that i can do a lot of the positional eval (
> central control, pawn advancement, etc ) during the search.  That way, i can
> probablyget a much more acurate compute-free guess at the current positional
> score, and short-circut positions less outside alpha & beta.

It's worth a try but moving stuff out of the leaf eval into to the move routine
can often be a loser, overall. You have to undo the computation as you back up
the tree. And you are paying a cost for info you may not need : e.g. if you can
cut off using material scoring only, then all your incremental positional eval
is wasted. It's still maybe worth a try but I wouldn't be surprised if it didn't
help.

--Jon




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