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Subject: Re: Root Position

Author: Severi Salminen

Date: 12:00:27 01/05/01

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>I just reuse the score from the last iteration and center on that with an
>aspiration windows of one third of a pawn. I do the +1 -1 parts too. At first I
>found them "ugly", but as far as I can see, it is necesary.

I also use the score from previous iterations. Only the first 1 ply search uses
infinite window.

If you would leave those +1 or -1 away you are telling the search fonction that
you allready know a move that gives you that score. But this is not true and if
the true score indeed is the same as the first try returned we are in trouble.
They look ugly but are mathematically correct.

Severi



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