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Subject: Re: KRRPKQ ending and practical human play

Author: Ricardo Gibert

Date: 17:48:19 01/07/03

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On January 07, 2003 at 20:40:11, Marc Bourzutschky wrote:

>The 50-move rule is irrelevant to endgame studies, which is what this is about.


I seriously doubt if anyone is ever going to expend the effort to actually
understand the ending you gave.

BTW, since the analysis you gave is based on a DTM (=Distance To Mate) EGTB, we
don't really know if it is drawn due to the 50-move rule or not.


>
>On January 07, 2003 at 20:29:07, 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.
>>
>>
>>All the special cases were eliminated in the lastest version of the 50 move
>>rule. You must mate within 50 moves now or it is a draw. An exception is only
>>made when the organizer declares before the event which type of positions are
>>excepted, but nobody ever does this. Such positions are too rare to bother with.
>>
>>
>>>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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