Author: F. Huber
Date: 09:00:42 08/01/05
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On August 01, 2005 at 11:40:29, Tord Romstad wrote: >On August 01, 2005 at 11:26:38, F. Huber wrote: > >>Well, could you please explain, where the ´knight file´ or the ´bishop file´ >>are in Chess960??? ;-) > >OK, replace it with "one file away from the edge of the board" and "two >files away from the edge of the board" if you prefer. I don't understand >why so many people find this is so hard to understand, but before I give up >I will try to give one very simple concrete example. Consider the following >two positions: > >[d]rnbqnkrb/pppppppp/8/8/8/8/PPPPPPPP/RNBQNKRB w GAga - 0 1 >[d]brknqbnr/pppppppp/8/8/8/8/PPPPPPPP/BRKNQBNR w HBhb - 0 1 > >In the first position, 1. O-O is a legal first move for white. In the >second position, white cannot castle in the first move. Therefore, the >two positions cannot be said to be functionally equivalent. > >Tord Thanks Tord, it´s clear now (even for me ;-)). My error was, that I simply thought swapping O-O-O and O-O would be enough to make these mirrored positions equivalent, but of course those both castlings _are_not_ symmetric! Franz.
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