Author: Uri Blass
Date: 01:57:50 01/10/03
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On January 10, 2003 at 04:55:17, Omid David Tabibi wrote: >>Your positions are illegal. >> >>In the first position there are 32 pieces on the board and it means that there >>were no captures so there were no promotions and it is impossible to have it >>when the number of white queens is bigger than 1. >> >>In the second and third position there are 30 pieces but it is easy to prove >>that all the white pawns need to promote to get 8 white queens and 2 white >>bishops with the same color. >> >>It is impossible to promote 8 pawns when only 2 capture are allowed because >>every capture can open at most 2 new files for promotion. >> > > >[D]k1K5/8/8/8/8/8/7P/6B1 w - - 0 1 >White to move. > >Is the above position legal? If so, what were the last two moves? > > >Source: The Chess Mysteries of Sherlock Holmes, by Raymond Smullyan. Na8+ Kxa8 Uri
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