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Subject: Re: Crafty and draw by repetition ?!

Author: Robert Hyatt

Date: 18:35:42 04/21/00

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On April 21, 2000 at 18:42:08, pete wrote:

>On April 21, 2000 at 17:46:46, Robert Hyatt wrote:
>
>>On April 21, 2000 at 16:32:21, pete wrote:
>>
>>>Game : Crafty17.10 (winboard)- Junior6 on 2 computers ( rest really irrelevant
>>>); crafty played with the "official" book.bin .
>>>
>>>1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 d6 8.c3 0-0 9.h3
>>>Bb7 10.d4 Re8 11.Ng5 Rf8 12.Nf3 Re8 13.Ng5 Rf8 14.Nf3
>>>
>>>Here crafty claimed draw by repetition !?
>>
>>This looks reasonable to me.  After white moves Nf3, the position is the same
>>as it was after moves 10 and 12.  Nf3 is the third repetition of that position.
>>
>
>I understand : but this is not the rule as I know it : you can't claim a
>position has appeared 3 times ; you can only say that with your following move
>you can reach a position that was already there in the game for the 3rd time :
>this is a slight but significant difference : so crafty can't claim draw here
>whereas Junior could say ( after 14. Nf3 )  : " I intend Re8 and claim draw !"
>
>I am not 100% sure but as having played tournament games for about 20 years now
>I am at least _quite_ sure .
>
>I don't have a link to FIDE rules so either way I will learn something :-)


That is incorrect.  You play your move.  You tell your opponent that you claim
a draw by repetition.  You don't press the clock.  You can call the TD over if
you want.  But you definitely can claim a draw _after_ you move your piece, and
_before_ you press the clock.   If you press the clock first, then you can not
claim the draw...

If you look at the position after move 10, after move 12, and after move 14,
the _same_ position is found each time.  That is a classic three-fold
repetition...



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