The logic of handling a chessboard and parsing standard FEN (Farnsworth-Edwards Notation) for describing a position as well as SAN (Standard Algebraic Notation) for describing individual moves is handled. This class can be used as a backend driver for playing chess, or for validating and/or creating PGN files using the File_ChessPGN package. WWW: http://pear.php.net/package/Games_Chess/