Author: Uri Blass
Date: 16:11:16 01/04/03
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On January 04, 2003 at 18:56:27, Omid David Tabibi wrote: >[D] 4R3/8/8/8/8/8/8/R3K2k w Q - 0 1 > >The last two moves were e8=R Kh1. > >Now how can white mate in 1? I bet no program can find the mate in one move... > >Think for a minute... (answer below) > > > > > > > > > > > > > > > > > > > > > > > > >O-O-O-O# > >[D] 8/8/8/8/8/4K3/4R3/R6k b - - 0 1 > >According to FIDE rules, this move (long long castle) is perfectly legal. > >Let's see the "castling" section (as appearing on Fide Laws of Chess 1997 >http://www.marochess.de/chess/fidelaws): > >------------------------------------------------------------------------------- >(ii) 'castling'. This is a move of the king and either rook of the same colour^, >counting as a single move of the king and executed as follows: the king is >transferred from its original square two squares towards the rook, then that >rook is transferred over the king to the square the king has just crossed. > > (1) Castling is illegal: > > [a] if the king has already been moved, or > [b] with a rook that has already been moved The rook has already been moved in the time when it was a pawn so castling is illegal by fide rules. The rule does not say that the rook has to be a rook at the time that it moved. Uri
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