Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Question: Null Move Fiddling in Fritz6 and in general

Author: Vincent Diepeveen

Date: 11:40:41 11/29/99

Go up one level in this thread


On November 29, 1999 at 14:28:46, William Bryant wrote:

>On November 29, 1999 at 14:20:19, Vincent Diepeveen wrote:
>>     if( nullmovescore >= beta ) {
>>       StoreHash(alfa,beta,nullmovescore,depth);
>>       return(nullmovescore);
>
>I missed this in your reply, so let me ask it again
>
>Is there any advantage / harm in storing the value as:
>       StoreHash(alfa, beta, nullmovescore, depth-1-R);

depends where you store it.

if depth = n,
then store in hashtable depth = n
if depth = n-R-1 then store in hashtable n-R-1.

if i nullmove in current ply, and call the search with reduced depth n-R-1
then at CURRENT ply i store of course depth = n.

after calling suddenly my depth is n-R-1 so i store n-R-1 there.

Thought my answer already implied this!

>ie. in storing the value at the searched depth rather than
>the current depth.
>
>William
>wbryant@ix.netcom.com



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.