Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: late move reductions

Author: Frank Phillips

Date: 13:13:47 03/01/06

Go up one level in this thread


Thanks for sharing this.  I am at the preliminary stages and just thinking about
refinements.  Initial indications are:
1. Basic implementation, not if move extended or check or threat..etc, improved
scores on tactical tests.
2. Crude use of history scores helped again  In this simple case calculating the
max. history score after each root move and only reducing if move history < 50%
(say).  (My history scores are not 2^depth and therefore do not grow ultra
fast.).
3. Next stage was thoughts about trying explicit counters of when moves
fail/not_fail high rather than using the history score, or adding piece_type to
the history counters, which you just mentioned below :-)



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.