A40

Modern Defense: Beefeater Variation

Chess diagram: Modern Defense: Beefeater Variation after 5…f5

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

131,244 games: White 42.9% / Draw 5.1% / Black 52.0%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
31,49631K
27,66128K
15,14915K
11,04911K
9,0539,053
8,1758,175
7,9417,941
4,8444,844

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 27, 2026

Engine evaluation

+0.87 White is better

Best play: 6. h4 Nf6 7. h5 Rg8 8. hxg6 hxg6 9. d6 Nc6 10. Nh3 Qa5

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

Overview

Modern Defense: Beefeater Variation (ECO A40, Flank Openings) is a variation of the Queen's Pawn Game: Modern Defense, reached after 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 f5 (5 moves).

In 131,244 rated Lichess games between players rated 1600 to 2500, White won 42.9%, Black 52.0% and 5.1% were drawn. White's most played move here is 6. Nf3, in 24% of those games.

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How to play against the Modern Defense: Beefeater Variation

6. e4 scores best for White: 50.4%, with White winning 47.6% and Black 46.7% of 28K games. The most played, 6. Nf3, scores 44.2% in 31K games, and 6. Bg5 scores lowest: 42.7%. Stockfish's first choice is 6. h4.

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. “Modern Defense: Beefeater Variation (A40)”. Lichess data as of 27 Oct 2026. https://chesscodex.org/openings/modern-defense-beefeater-variation