Author: Tony Werten
Date: 02:52:19 01/10/03
Go up one level in this thread
On January 10, 2003 at 05:35:01, Omid David Tabibi wrote: >On January 10, 2003 at 04:57:50, Uri Blass wrote: > >>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 >> > >Another interesting position: > >[D]1n2k3/p1pqppp1/1p1p1n2/3N2p1/1PB3bP/2P1PN2/1P1P1PP1/2BQK2R w - - 0 1 > >Can white castle? No. Your fen says white has no castle rights :) Tony > > >>Uri
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