A40

Australian Defense

Chess diagram: Australian Defense after 1…Na6

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

62,642 games: White 50.4% / Draw 4.6% / Black 45.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
18,83419K
16,39816K
10,15210K
6,6626,662
4,5044,504
1,8641,864
1,0821,082
861861

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 9, 2026

Engine evaluation

+0.91 White is better

Best play: 2. e4 c6 3. Nf3 g6 4. Bd3 Bg7 5. O-O Nc7 6. Re1 d6

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

Overview

Australian Defense (ECO A40, Flank Openings) is a variation of the Queen's Pawn Game, reached after 1. d4 Na6 (1 move).

In 62,642 rated Lichess games between players rated 1600 to 2500, White won 50.4%, Black 45.1% and 4.6% were drawn. White's most played move here is 2. e4, in 30% of those games.

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How to play against the Australian Defense

The most played answer, 2. e4, also scores best for White: 53.6%, with White winning 51.2% and Black 44.1% of 19K games. Of the main answers, 2. e3 scores lowest: 50.9%. Stockfish's first choice is also 2. e4.

Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Cite this page

Caissa Codex. “Australian Defense (A40)”. Lichess data as of 9 Nov 2026. https://chesscodex.org/openings/australian-defense