Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Null move reductions

Author: Will Singleton

Date: 17:24:08 10/04/98

Go up one level in this thread


On October 04, 1998 at 19:06:15, Roberto Waldteufel wrote:

>
>Hi all,
>
>I wonder what reductions various programs use for the null move. I reduce by two
>plies, but I believe a one-ply reduction may be more usual. However, I have
>found R=2 produces quite good results in my program. I would like to hear of
>others' experiences.
>
>Best wishes,
>Roberto


Amateur uses r=2, and gets about a ply deeper on average.  But I've noticed that
in positions where there is a clear better move, the node reduction is great,
and in positions where there is no clear cut better move, the reduction is not
that great.  Of course, you need it most in the latter situation.  I'm probably
doing something wrong.  Do you notice anything similar?

Will



This page took 0.09 seconds to execute

Last modified: Thu, 07 Jul 11 08:48:38 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.