Author: Robert Hyatt
Date: 20:07:49 11/22/02
Go up one level in this thread
On November 22, 2002 at 12:37:10, Tim Foden wrote: >On November 22, 2002 at 12:06:05, Leo Dijksman wrote: > >>On November 22, 2002 at 11:47:30, Tim Foden wrote: >> >>>On November 21, 2002 at 23:10:06, Edward Seid wrote: >>> >>>>On November 21, 2002 at 22:32:21, ERIQ wrote: >>>> >>>>>Just got an opening book for Phalanx but no opening book for crafty. played a >>>>>game just to see. Maybe I should set the resign alittle lower for crafty >>>> >>>>The problem with Crafty is that if it's playing another computer, it won't >>>>resign. I'm not sure what's the logic behind that design. So in my WB 90 30 >>>>Ladder, I end up waiting and waiting for Crafty to get mated in hopeless >>>>positions. Perhaps Dr. Hyatt can enlighten us... why not make resigning against >>>>other computers an option with Crafty? >>> >>>If you want to switch on the resigning in crafty, perhaps you could use >>>InBetween (By Odd Gunnar Malin -- http://home.online.no/~malin/sjakk/) to filter >>>out the "computer" command from WinBoard that tells the engine that it is >>>playing a computer. If crafty doesn't know it is playing a computer, then it >>>wouldn't switch off resigning. >>> >>>Cheers, Tim. >> >>You are right Tim, I have tested that a few months ago and works perfect but it >>seems as Crafty plays a little weaker then. >> >>Crafty 18.14 with computer command vs Crafty 18.14 without was 53,5-45,5 (99 >>games, 40/300sec) > >Well, I'm not really convinced that 99 games would be enough to be sure about >this. > >If using InBetween in this way really does weaken crafty so much, there can only >be 2 reasons: 1. InBetween uses too much CPU, or is too slow relaying commands, >or 2. the resigning has this effect. > >For (1) Maybe Odd Gunnar could comment about InBetween? > >For (2) I doubt though that resigning would have this effect when Crafty plays >itself. > >Maybe more testing is indicated? I suppose there could be a 3rd option... maybe >other settings are also changed by Crafty when it receives "computer"? > >Cheers, Tim. Crafty does change some internal settings when playing a computer opponent, not just draw/resign thresholds, but it actually alters the scoring a bit, particularly with respect to draws.
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