f4
White's King's Bishop's Pawn opening avoids giving Black's KKt a KP target and enables 2.Kt-KB3 after, but is rarely played except by skilled players as it can expose White's king to attack (although if Black replies 1..P-K4 White can transpose into the Kings Gambit). Henry Bird (1832-1908) used it often, but any player takes a great risk in advancing his KBP too soon
Taken from chessops website


Thanks. that should be 34% draw. I changed it