Author: F. Huber
Date: 08:26:38 08/01/05
Go up one level in this thread
On August 01, 2005 at 11:19:54, Tord Romstad wrote: >On August 01, 2005 at 10:30:29, F. Huber wrote: > >>On August 01, 2005 at 10:18:44, Tord Romstad wrote: >> >>>On August 01, 2005 at 10:07:49, Andreas Stabel wrote: >>> >>>>Chess 960 is really chess 480 since half the positions are mirror images of >>>>other positions and therefore funtionally identical. >>>> >>>>I do not understand why these mirror positions have not been eliminated. >>> >>>Because they are *not* functionally identical. Castling is not symmetrical. >>>When castling queenside, the king ends up on c1/c8, when castling kingside, >>>the king ends up on g1/g8. >>> >>>Tord >> >>Well, I would say it _is_ identical, if you simply swap the meaning of O-O and >>O-O-O. It´s almost the same as e.g. 1.a4 would be 1.h4 in the ´mirror´ game, >>so it´s only a matter of naming conventions. > >No, it is not. O-O and O-O-O cannot be considered equivalent, no matter how >you look at it. The king ends up on the knight file in one case, on the bishop >file in the other. All the 960 different starting positions *are* >fundamentally different. There is no way to reduce it to 480 positions. Well, could you please explain, where the ´knight file´ or the ´bishop file´ are in Chess960??? ;-) Franz.
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