First move f4

A02 Bird Opening A02 Bird Opening: Myers Defence A03 Bird Opening 1.f4 d5: Dutch Variation A02 Bird Opening: Thomas Gambit A02 Bird Opening: Sturm Gambit A03 Bird Opening 1.f4 d5: Williams Gambit A03 Bird Opening: Dutch Variation, Canard Variation A03 Bird Opening: Dutch Variation, Canard Variation, Double Duck Variation A03 Bird...