gnuchess-book - Opening book for gnuchess The opening book has been split from the binary gnuchess package. The format of the binary book is now entirely architecture independent and not bound to change with every new version of gnuchess. If you want to build your own books, just create it from PGN [1] by calling gnuchess and entering 'book add foobar.pgn'. If you want to use this as the default opening book, copy the resulting book.bin file to /usr/share/games/gnuchess/book.bin. If you only want to use your own book temporarily, put it in the current working directory, this is the first default location where gnuchess looks for the book. Lukas Geyer Wed Oct 9 19:02:54 EDT 2002 [1] Actually, you have to use a sort of restricted PGN, as gnuchess does not yet have a real PGN parser. This means in particular that the PGN should have no comments and variations. Also gnuchess does only add games to the opening book if it knows one of the players, i.e. it checks the names of the players against a hardcoded list of grandmasters.