A03 Bird Opening: Dutch Variation
A03 holds eight named lines, all under the name Bird Opening. It leaves A02 (Bird Opening) with 1...d5. Material is no longer level at the end of two of its lines; the widest gap, one pawn in Black’s favour, comes in Bird Opening: Williams Gambit. Every line here opens 1.f4, a first move used by only 27 of the 3,865 lines in the list.
| # | White | Black |
|---|---|---|
| 1 | f4 | d5 |
Moves only A03 plays
Same as A02 up to 1.f4, then:
- 1...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.
Lines filed under A03
All eight share their first two plies, the whole reference line and then split five ways at White’s move 2.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Bird Opening: Dutch Variation | (the shared start itself) | 2 | |
| Bird Opening: Dutch Variation, Dudweiler Gambit | 2.g4 | 3 | |
| Bird Opening: Sturm Gambit | 2.c4 | 3 | |
| Bird Opening: Williams Gambit | 2.e4 | 3 | |
| Bird Opening: Lasker Variation | 2.Nf3 Nf6 3.e3 c5 | 6 | |
| Bird Opening: Williams Gambit | 2.e4 dxe4 3.Nc3 Nf6 4.Qe2 | 7 | Black +1 |
| Bird Opening: Williams-Zilbermints Gambit | 2.e4 dxe4 3.Nc3 Nf6 4.Nge2 | 7 | Black +1 |
| Bird Opening: Thomas Gambit | 2.b3 Nf6 3.Bb2 d4 4.Nf3 c5 5.e3 | 9 |
The road to A03
- 1.f4A02 Bird Opening
- 1...d5A03
The position after 1...d5
White is to move and has 20 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A06 | Zukertort Opening | four squares: g1, f2, f3, f4 |
| B01 | Scandinavian Defense | four squares: e2, f2, e4, f4 |
| C31 | King’s Gambit Declined: Falkbeer Countergambit | four squares: e2, e4, e5, e7 |
| D00 | Queen’s Pawn Game | four squares: d2, f2, d4, f4 |
| A00 | Van Geet Opening | six squares: b1, f2, c3, f4, d5, d7 |
| A01 | Nimzo-Larsen Attack | six squares: b2, f2, b3, f4, d5, d7 |
| A04 | Zukertort Opening | six squares: g1, f2, f3, f4, d5, d7 |