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Subject: Re: KRRPKQ ending and practical human play

Author: Robert Hyatt

Date: 15:21:15 01/08/03

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On January 07, 2003 at 20:40:41, Ricardo Gibert wrote:

>On January 07, 2003 at 20:14:11, Edward Seid wrote:
>
>>On January 07, 2003 at 19:45:04, Ricardo Gibert wrote:
>>
>>>What's subtle about it? Black draws easily thanks to the 50-move rule rendering
>>>most of this analysis as irrelevant.
>>
>>The 50-move rule was created by tournament directors and organizers to address
>>practical tournament play, before computer use was widespread.  After computer
>>analysis proved that some endings could still be won but would take longer than
>>50-moves, certain special case endings were allowed to extend beyond 50 moves in
>>tournament play.
>
>
>BTW, this is not correct. Exceptions were made before the advent of EGTBs i.e
>KNNKP.
>

I don't recall any exceptions prior to Ken Thompson's results.  As he found
exceptions, FIDE added them to the list.  But GM players revolted and all the
exceptions were once again removed.


>
>>The current analysis shows that in the case of KRRPKQ, with perfect play from
>>both sides, that the superior side could take MUCH LONGER than 50 moves.
>>
>>So I disagree with you when you say that a forced winning line is irrelevant
>>because of a rule that humans created to expedite human tournament play.



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