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Subject: Re: Another Clever Problem; Samuel Loyd New York Albion 1857, Att. Dr. Hyatt

Author: Robert Hyatt

Date: 11:58:31 03/07/02

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On March 07, 2002 at 14:26:32, Terry McCracken wrote:

>>>
>Thanks Heiner! Maybe something can be done to fix this anomalous type of "chess
>problem" in the future adding some new code to FEN or some kind of work around?
>It would helpful that's for sure!:)
>
>"Piece":)
>
>Terry
>


The problem is that you are trying to use a hammer when you need a
screwdriver.  IE FEN was designed to encode "complete" chess positions
into a form readable by a computer...  At least as complete as can be
done in a single string without a complete move history included.

You want a "chess diagram" facility that lets you display a chess board
position whether it is legal or not, and which also allows you to "hide"
certain aspects of the position (castling rights, en passant possibilities,
pieces in "mid-air" and so forth).  FEN can display anything, but the "FEN
string" will be illegal for many of those positions.  Which means that even
though it looks like FEN and smells like FEN, it is something else entirely...




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