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Subject: Re: Question: WAC.001 and null move

Author: Robert Hyatt

Date: 06:43:22 08/20/01

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On August 20, 2001 at 05:22:36, Gian-Carlo Pascutto wrote:

>On August 20, 2001 at 04:41:41, José Carlos wrote:
>
>>  Then I tried not doing it in the PV, and the strange things went out. The tree
>>got smaller and the search deeper.
>>  I don't know if this is the correct way of doing it (never do a null-move in
>>the PV), cause I like to try myself before looking other's sources to see how
>>they do it. But looks reasonable. In the PV, we don't expect to fail high, so
>>why trying a null move?
>
>I don't do this, and crafty doesn't seem to be doing this either.
>
>However, your explanation makes perfect sense and I will try it.
>
>--
>GCP


I used to do it but I found that trying nulls _everywhere_ actually made my
tree smaller.  I do it this way now because it was more efficient when I
tested it..  Not by a lot, but better.



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