Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Another funky hash problem

Author: Jon Dart

Date: 07:13:17 08/25/99

Go up one level in this thread


I don't remember all the details because I tracked down and fixed
this problem in my program over a year ago. At the time I did a
lot of tracing to find exactly where the issue was. Crafty currently
does not adjust non-exact scores: maybe Bob can elaborate.

--Jon

On August 25, 1999 at 01:34:42, Bruce Moreland wrote:

>
>On August 25, 1999 at 00:01:28, Jon Dart wrote:
>
>>You may have multiple problems, but one of them is that you
>>should not adjust a mate score from the hash table unless the
>>node type is EXACT.
>
>Icky.  This could cause strange things, couldn't it?  How do you store >= mate
>in 3 and have it make any sense, since the bound information is variable
>depending upon the number of moves between here and the root of the search?
>
>Why not just convert all mate scores to bounds and be done with the whole
>problem?
>
>bruce



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.