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Subject: Extend or not extend in a nullmove tree

Author: Roland Pfister

Date: 00:03:37 06/08/98

Last week we discussed what to do and not do in a nullmove subtree.
My program Patzer used to not extend in such a branch. Bob argued
against it and it sounded ok to me.

At the weekend I tried both versions and the result is that if Patzer
doesn't extend it is a little bit faster, but not much. But in some
positions it sees the solution one iteration later!

So I changed my program to extend even in nullmove branches.
Thanks Bob.

Roland

• Re: Extend or not extend in a nullmove tree Robert Hyatt 08:26:52 06/08/98
  • Re: Extend or not extend in a nullmove tree Don Dailey 13:33:26 06/10/98
    • Re: Extend or not extend in a nullmove tree Ernst A. Heinz 05:04:04 06/11/98
      • Re: Extend or not extend in a nullmove tree Don Dailey 15:18:14 06/11/98
    • Re: Extend or not extend in a nullmove tree Robert Hyatt 16:40:53 06/10/98
• Re: Extend or not extend in a nullmove tree Vincent Diepeveen 04:19:31 06/08/98

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