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Subject: Re: Shredder vs Johnny - 3 fold repetition, but rules give Shredder win

Author: Roger D Davis

Date: 14:05:05 11/29/03

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On November 29, 2003 at 16:40:17, David H. McClain wrote:

>On November 29, 2003 at 15:49:26, George Tsavdaris wrote:
>
>>
>>Shredder has outplayed Jonny and had a clear win (Perhaps a Mate in X position).
>> But due to a bug obviously, although it evaluated a big advantage for "him",
>>it played wrong and gave the chance to Jonny to have a triple fold repetition.
>>For me this is not important and it can be already been fixed by Shredder's
>>programmer. What is important is that it played better.
>>
>>And if rules say that the game can continue then there is any problem at all.
>>If Jonny's operator didn't knew the rules then whose fault is?
>
>So what you are saying George is that a tree fold repetition does not apply to
>computer chess?
>
>DHM

Yup, if one program clearly outplays another but somehow allows a threefold rep,
then the win should be awarded. But, if it only marginally outplays the other
program, then a draw is a draw. If the boundary between "clearly" and
"marginally" is fuzzy, then a panel can be formed to decide the issue.



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