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Subject: Re: 50 Move Rule

Author: Bruce Moreland

Date: 16:48:49 05/16/01

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On May 16, 2001 at 13:43:47, Alex Boby wrote:

>  I always understood that it was 50 half moves, but someone has recently
>claimed that it is 50 full moves...
>
>Article 10.12:
>
>"The game is drawn when a player having the move claims a draw and demonstrates
>that at least the last 50 consecutive moves have been made by each side without
>the capture of any piece and without the movement of any pawn."
>
>This is a little ambiguous I think...
>
>Which is it?
>
>Alex

50 moves by each side.  That doesn't mean 50 moves by one side and 49 by the
other, by the way.

The 50-move rule is a cause of interesting chess program bugs, like for instance
some programs might not recognize mate on the 50th move.

bruce




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