ECO A02: Bird Opening
ECO A02 is part of volume A, Flank Openings.
The Lichess chess-openings dataset files 19 named lines under it.
The shortest is Bird Opening:
1. f4.
That position has come up in 28,641,334 Lichess games between players rated 1600 to 2500: White won 49.7%, 4.6% were drawn and Black won 45.7%.
| Opening | Moves | Games | Length |
|---|---|---|---|
| Bird Opening | 1. f4 |
28.6M | 1 move |
| Bird Opening: From's Gambit | 1. f4 e5 |
2.9M | 1 move |
| Bird Opening: Hobbs Gambit | 1. f4 g5 |
84K | 1 move |
| Bird Opening: Horsefly Defense | 1. f4 Nh6 |
50K | 1 move |
| Bird Opening: Myers Defense | 1. f4 b5 |
37K | 1 move |
| Bird Opening: From's Gambit, Bahr Gambit | 1. f4 e5 2. Nc3 |
30K | 2 moves |
| Bird Opening: Mujannah | 1. f4 Nf6 2. c4 |
37K | 2 moves |
| Bird Opening: Wagner-Zwitersch Gambit | 1. f4 f5 2. e4 |
86K | 2 moves |
| Bird Opening: Double Duck Formation | 1. f4 f5 2. d4 d5 |
111K | 2 moves |
| Bird Opening: Hobbs-Zilbermints Gambit | 1. f4 h6 2. Nf3 g5 |
5,599 | 2 moves |
| Bird Opening: Lasker Gambit | 1. f4 e5 2. fxe5 f6 |
44K | 2 moves |
| Bird Opening: Platz Gambit | 1. f4 e5 2. fxe5 Ne7 |
2,410 | 2 moves |
| Bird Opening: Schlechter Gambit | 1. f4 e5 2. fxe5 Nc6 |
321K | 2 moves |
| Bird Opening: Batavo-Polish Attack | 1. f4 Nf6 2. Nf3 g6 3. b4 |
1,070 | 3 moves |
| Bird Opening: From's Gambit, Langheld Gambit | 1. f4 e5 2. fxe5 d6 3. exd6 Nf6 |
13K | 3 moves |
| Bird Opening: Siegener Gambit | 1. f4 e5 2. d4 exd4 3. Nf3 c5 4. c3 |
506 | 4 moves |
| Bird Opening: Swiss Gambit | 1. f4 f5 2. e4 fxe4 3. Nc3 Nf6 4. g4 |
317 | 4 moves |
| Bird Opening: From's Gambit, Lasker Variation | 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 |
368K | 4 moves |
| Bird Opening: From's Gambit, Lipke Variation | 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nh6 5. d4 |
1,562 | 5 moves |