Author: Peter Berger
Date: 05:10:48 09/09/01
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On September 09, 2001 at 04:09:39, William Penn wrote: >Can someone please explain FEN to me? Here's a simple example below. I >understand the chessboard position, which is simple Forsythe notation. I also >understand that the "w" stands for white to move, while "b" would be black to >move. But I don't know what the remaining items mean, nor exactly how they >should be formatted. Thanks... >WP > >4k3/8/8/8/8/4K3/4P3/8 w - - 01 The first "-" directly behind the side to move describes the castling ability . "-" means neither side can castle anymore. The second "-" is for a possible en passant target square. "An en passant target square is given if and only if the last move was a pawn advance of two squares". "-" means no en passant target square is availlable here. The "0" says : there have been zero halfmoves since the last move that would have reset the 50 move counter ( pawn move or capture). Finally the "1" says it's the first move of the game/position for the side to move that is presented here. For more information look at chapter 16 of the PGN standard that describes FEN: http://www.clark.net/pub/pribut/standard.txt pete
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