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Subject: Re: Full definition for FEN

Author: Mike Leahy

Date: 16:39:36 06/04/99

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On May 27, 1999 at 20:48:55, Dann Corbit wrote:

>From the PGN Standard


>16.1.4: Examples
>
>Here's the FEN for the starting position:
>
>rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
>
>And after the move 1. e4:
>
>rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1

This is problematic.  The position is identical to...

 rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1

...because the en passant capture is not legal.  Purely
positional programs like Bookup are fussy about this.
Bookup considers the record with 'e3' as illegal.  Programs
like Rebel solve the program by ignoring the en passant flag(!).

Mike Leahy

• Re: Full definition for FEN Dave Gomboc 17:20:38 06/04/99
  • Re: Full definition for FEN José de Jesús García Ruvalcaba 10:22:31 06/05/99
    • Re: Full definition for FEN Dave Gomboc 10:54:53 06/05/99
• Re: Full definition for FEN Dann Corbit 16:49:22 06/04/99

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