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Subject: Re: Where is Stefan Pohl Rating Rating List ?

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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