Chess opening book
http://en.wikipedia.org/wiki/Chess_opening_book
References
....
Chess2U » Computer Chess Opening Books, http://www.chess2u.com/f4-computer-chess-opening-books
http://en.wikipedia.org/wiki/Chess_opening_book
References
....
Chess2U » Computer Chess Opening Books, http://www.chess2u.com/f4-computer-chess-opening-books