Author: Reinhard Scharnagl
Date: 03:45:59 07/17/05
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On July 17, 2005 at 06:30:28, Sune Fischer wrote: >On July 17, 2005 at 04:50:41, Reinhard Scharnagl wrote: > >Would a mixture be legal ? >rnnbkqbr/pppppppp/8/8/8/8/PPPPPPPP/RNNBKQBR w KAhq - 0 1 > ^^^^ > >I guess there must be some implicit request for these new FRC tools to export >FENs as KQkq whenever possible for backward compability reasons. Sune, as I have written on several places, Shredder intends to represent Chess960 positions (compatible to traditional chess having only castling rights connected to traditional K-R placements) in two incompatible FENs, depending on Shredders internal view to the position as normal or Chess960 like. That is caused by NOT using the X-FEN proposal, nearly established since years. By additionally switching UCI engines between a normal mode and Chess960 mode (which is absolutely unnecessary, when following made proposals) actually such a confusion cannot be avoided in Shredder. Additionally all Chess960 starting positions generated via SP number will be generated in a new and different FEN. Current SMIRF accepts a lot of extended FEN (and thus PGN) variants, but will write FEN and PGN only using the compatible X-FEN form. Reinhard.
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