Author: Anthony Cozzie
Date: 12:03:50 01/05/04
Go up one level in this thread
On January 05, 2004 at 12:54:23, Robert Allgeuer wrote: >On January 05, 2004 at 12:17:24, Alex Szabo wrote: > >>A self-play experiment between crafty version 19.6 (19.6) and crafty version >>19.6 compiled with -DFUTILITY (19.6b) resulted in the latter being stronger than >>the former by 12 (plus or minus 2) elo rating points. The score was: 19.6 won >>5,612 games, 8,109 games were drawn, and 19.6b won 6,279 games (for a total of >>20,000 games in the experiment). >> >>A 2nd self-play experiment between crafty version 19.6 (19.6) and crafty version >>19.6 compiled with -DDETECTDRAW (19.6c) resulted in the former being stronger >>than the latter by 21 (plus or minus 2) elo rating points. The score for the >>2nd experiment was: 19.6 won 6,735 games, 7,734 games were drawn, and 19.6c won >>5,529 games (for a total of 19,998 games). > >Interesting. >For the Crafty non-expert: >what do the symbols FUTILITY and DETECTDRAW do exactly when they are defined? > >Thanks >Robert futility turns on futility pruning ala Heinz. detectdraw turns on draw detection (extremely blocked up positions). anthony
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.