Information for crafty-open-large-19960910: Comment: The large opening book for crafty Description: This is the port of the large opening book for crafty. It was created with "book create book.txt 60 3" (see the crafty documentation and online help for a more thorough explanation of what this does) which discards all openings not played in at least three games which I expect to be a reasonable constant, but I am open to suggestions on this. - Stefan Eggers