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Subject: Re: Question: Where do you set your null move threashold?

Author: James Robertson

Date: 19:58:19 11/14/99

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On November 14, 1999 at 22:16:33, Will Singleton wrote:

>On November 14, 1999 at 21:45:26, William Bryant wrote:
>
>>I recently found that my null threashold is set to low, and I am experimenting
>>with different level.
>>
>>I am curious what other people have found works for them.
>>
>>Do you count pieces or pieces and pawns?
>>
>>How may pieces or pieces and pawns must be present for the side on move
>>to allow a null move?
>>
>>Thanks in advance.
>>
>>William
>>wbryant@ix.netcom.com
>
>I originally had a threshold of around 3 pieces per side, but now I allow
>endgames as long as someone has a piece.  This is further modified by a
>blocked-pawn term, which disallows null if most pawns are blocked.  I think.
>So, I don't detect zug like some others attempt to do.
>
>I only use R=2, but I know others alternate between 2 and 3 depending on the
>situation.
>
>Will

What are the advantages/disadvantages of alternating between R=2/3? Does having
some entries with R=3 cause problems with the hash table?

James



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