Caissa Codex
A02

Bird Opening: Batavo-Polish Attack

Chess diagram: Bird Opening: Batavo-Polish Attack after 3. b4

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

1,070 games: White 47.0% / Draw 5.6% / Black 47.4%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
999999
2020
1717
99
55
55
55
44

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 25, 2026

Engine evaluation

−0.29 The position is about equal

Best play: 3... Bg7 4. Bb2 d6 5. e3 Nbd7 6. Be2 O-O 7. O-O e5 8. fxe5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

Bird Opening: Batavo-Polish Attack (ECO A02, Flank Openings) is a variation of the Bird Opening, reached after 1. f4 Nf6 2. Nf3 g6 3. b4 (3 moves).

In 1,070 rated Lichess games between players rated 1600 to 2500, White won 47.0%, Black 47.4% and 5.6% were drawn. Black's most played move here is 3…Bg7, in 93% of those games.

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Other lines from the same position

Instead of 1…Nf6 2. Nf3 g6 3. b4, the position after Bird Opening also goes on to:

Cite this page

Caissa Codex. “Bird Opening: Batavo-Polish Attack (A02)”. Lichess data as of 25 Oct 2026. https://chesscodex.org/openings/bird-opening-batavo-polish-attack

https://chesscodex.org/openings/bird-opening-batavo-polish-attack