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Subject: Re: Exact value of second best move in AlphaBeta with aspiration Window

Author: Dieter Buerssner

Date: 14:49:03 08/01/02

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On August 01, 2002 at 12:13:06, Omid David wrote:

>In order to get exact values for every root move, you have to use pure MiniMax
>there (no AlphaBeta). Of course this will require more search effort, but the
>information it yields can be used to compensate that. In addition it will enable
>a better move ordering at root.

I think, not a pure Minimax is needed. It will be enough, to prove that no move
is better than the score of the so far best move - some margin.

As long, as you do pure Minimax at the root, better move ordering at the root
will not help too much. To be more concrete, it will not help, when you finish
one depth, but it may help, to find a better move early, when the the depth gets
not finished.

Regards,
Dieter



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