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Subject: Re: WoW does crafty know how to take a beating!

Author: Tim Foden

Date: 09:37:10 11/22/02

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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.




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