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Subject: An interesting rule of chess...

Author: Peter Kappler

Date: 18:51:30 09/30/99

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On September 30, 1999 at 21:21:18, Pete Galati wrote:

>On September 30, 1999 at 20:11:47, Peter Kappler wrote:
>
>>On September 30, 1999 at 19:44:34, Pete Galati wrote:
>>
>>>On September 30, 1999 at 18:30:04, Georg v. Zimmermann wrote:
>>>
>>>>engine-engine match. If say black has no time left but white no material
>>>>winboard will still give 1-0 as result. Need to be carefull in automated
>>>>matches.
>>>>
>>>>Regards,
>>>>
>>>>Tec
>>>
>>>If I understand what you descibed, white won on time, the flag fell on black's
>>>clock.  It sounds like it's working properly to me.
>>>
>>>Pete
>>
>>
>>His point is that you can't claim a win on time if you don't have mating
>>material.  In this case, a draw is the correct result.
>>
>>--Peter
>
>That sounds true to me, I'm not really sure how Chess rules apply to this
>situation, because I want to think that even without any material that white can
>still win on time because black was not able to checkmate white before black's
>flag fell, all of my instinct (questionable) tells me that white won the game on
>time.  I don't know where to look that up.
>
>Pete


It's definitely a USCF rule, and I'm almost certain that it is a FIDE rule, too.
 The Internet Chess Club certainly enforces it, for whatever that's worth...

Paraphrasing from the USCF's "Official Rules of Chess", 1987:

"A game is drawn if one player has insufficient material for a possible
checkmate and his opponent's flag falls first."

I have always had a problem with the wording of this rule, specifically the
phrase "possible checkmate".  If my flag falls, and I have just a single rook
pawn and you have just a single minor piece, technically it is *possible* for
you to checkmate me, but only if I play like a complete idiot.  Would the player
with the minor piece really be awarded the win here?  ICC calls this a draw, and
I think any decent tournament director would, too.

Here's a trickier example.  My flag falls, and I have a pawn against your two
knights.  This is actually a forced win in many cases, though it requires
*extremely* precise play by the side with the knights.  Again, ICC will call
this a draw, but technically the side with the two knights should get the full
point.

--Peter





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