Bird Opening: Double Duck Formation
1. f4 f5 2. d4 d5
The Bird Opening: Double Duck Formation is a chess opening classified as ECO A02, reached after 1. f4 f5 2. d4 d5. It is a line of the Bird Opening. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 87 times by this move order. White won 49%, 8% were drawn and Black won 43%. The most popular continuation is 3. e3 (59% of games).
Engine evaluation: +0.08 (Stockfish, depth 55; best line 3. Nf3 e6 4. c4 c5 5. e3 Nf6)
- ECO
- A02
- Moves
- 4 plies
- FEN
rnbqkbnr/ppp1p1pp/8/3p1p2/3P1P2/8/PPP1P1PP/RNBQKBNR w KQkq - 0 3- PGN
1. f4 f5 2. d4 d5
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 53 | |
| 1500-1999 | 32 | |
| 2000+ | 2 | |
| All | 87 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 3. e3 | 51 (59%) | |
| 3. Nf3 | 16 (18%) | |
| 3. c3 | 5 (6%) | |
| 3. Nc3 | 4 (5%) | |
| 3. Qd3 | 2 (2%) | |
| 3. c4 | 2 (2%) | |
| 3. b4 | 2 (2%) | |
| 3. Be3 | 2 (2%) |
Highest-rated Lichess games
- dusic (2014) – Mind_Gambit (2048) 0-1 · 2026-09-03 · 600 + 5s
- PsalmKhalifa (2040) – Asklepios3141 (1977) 1-0 · 2026-09-02 · 300 + 0s
- cubano1988 (2009) – Akbar610101 (1990) 1-0 · 2026-09-04 · 180 + 0s
Comes from
Bird Opening 1. f4
More Bird Opening lines (all)
- Bird Opening: Batavo-Polish Attack A02
- Bird Opening: From's Gambit A02
- Bird Opening: From's Gambit, Bahr Gambit A02
- Bird Opening: From's Gambit, Langheld Gambit A02
- Bird Opening: From's Gambit, Lasker Variation A02
- Bird Opening: From's Gambit, Lipke Variation A02
- Bird Opening: Hobbs Gambit A02
- Bird Opening: Hobbs-Zilbermints Gambit A02
- Bird Opening: Horsefly Defense A02
- Bird Opening: Lasker Gambit A02
- Bird Opening: Mujannah A02
- Bird Opening: Myers Defense A02
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.