Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Null move R=3

Author: Vincent Diepeveen

Date: 17:57:17 08/09/01

Go up one level in this thread


On August 07, 2001 at 16:03:34, Bruce Moreland wrote:

>I've often heard people state that null move with R=3 is better than with R=2,
>but I have never ever ever gotten a test result that indicates this.
>
>I've tried everything.  I've tried it throughout the tree, I've tried it near
>the root, and I've tried it near the tips.
>
>My measurement standard is ECM positions solved, which *always* goes down.
>
>What are other people doing that I'm not doing, or are people testing in some
>other way, if so is their way better or worse?
>
>I would test Crafty both ways (it's currently doing R=3 some places), but my
>machines will be busy until after the WMCCC.
>
>bruce

I think R=3 is more sound if you do more in qsearch.

For me using R=3 versus variations with R=2+R=3 that's simply letting
diep search a full ply more at tournament levels.

At blitz i wouldn't know what is better. probably R=3. considering
search depths i get there also forward pruning is working there :)








This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

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