f4 e5
| Bird From gambit, Lasker variation (A02) fe d6 ed Bd6 Nf3 g5 | fe d6 ed Bd6 Nf3 Nh6 d4 Bird From gambit, Lipke variation (A02) |
| Bird From gambit, Lipke variation (A02) fe d6 ed Bd6 Nf3 Nh6 d4 | fe d6 ed Bd6 Nf3 g5 Bird From gambit, Lasker variation (A02) |