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Subject: Question on Search Windows

Author: William Bryant

Date: 08:02:59 02/06/99


After a depth of 4, I tried using the alpha and beta returned from the
previous iteration as the initial alpha and beta for the next depth search

This generated a speed increase (I assume for generating early cutoffs).

Is this wise or are there pitfalls I haven't seen yet.

Would it be better to widen the search window by a pawn or so by subtracting
100 from alpha and adding 100 to beta before the next iteration?

Is there a better (read safter and/or more efficient) way of doing this?

Thank you in advance.

William
wbryant@ix.netcom.com



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