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Subject: Re: Ways to beat some computers

Author: Garry Evans

Date: 12:08:44 01/21/01

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On January 20, 2001 at 10:34:47, Robert Hyatt wrote:

>On January 20, 2001 at 02:38:57, Mark Longridge wrote:
>
>>Some of the programs, crafty and gandalf come to mind, let their clocks run down
>>pretty low (say as low as 30 seconds) near where the game would normally be
>>close to over. But if the other player is just shuffling wood back and forth and
>>is playing with an inc, that player can build up a huge time advantage. Crafty
>>tries too hard to avoid the 50 move rule, and all of a sudden it's got 25
>>seconds left and a lost position.
>>
>>I bet a lot of GM's and some programs do this on purpose. I don't see why crafty
>>shouldn't go for the 50 move rule instead of a silly pawn push, especially when
>>it's time is so low. Now the silly draws are becoming silly losses.
>
>If I saw this happen I might be concerned.  However, crafty does _not_ let the
>human get way ahead on time.  It has specific code to prevent this by speeding
>up itself.  And it _never_ loses on time, ever...
>
>
>
>>
>>If the score is -.60 and it's close to the 50 move rule, I figure the computer
>>may as well take the draw... especially when down to it's last 30 seconds.
>
>I wouldn't do that.  The human is much more likely to err than the computer...




 I agree the way crafty handles time is extremely well. Would you give your best
guess on what crafty's rating would be versus humans at 40/2 on the best
hardware? Please don't say you don't know, because there has been too many
computer vs human games, you could atleast guess!



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