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Subject: Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV

Author: Gian-Carlo Pascutto

Date: 09:07:26 12/03/01

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On December 03, 2001 at 11:51:07, José Carlos wrote:

>  Curiously, I just removed this alpha uptate some days ago because I didn't
>like the buggy pv's. I have the 'feeling' that the wrong pv's hurt next ply
>search because I lose information. I admit I didn't test it. I just followed an
>instict :)
>  I should test with and without alpha updating and see which is best, but I
>just can't believe that 10% you talk about...

This was with my program (and any other will be different) on 90 positions
from opening to middlegame, in 1 minute searches.

I didn't like the short PV's either, so I now try to use it in a smarter way.

--
GCP



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