A14

English Opening: Agincourt Defense, Keres Defense

Chess diagram: English Opening: Agincourt Defense, Keres Defense after 7…Nc6

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

28,685 games: White 49.0% / Draw 8.5% / Black 42.5%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
8,9988,998
6,5056,505
3,9983,998
3,0693,069
2,7752,775
1,3741,374
717717
292292

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 31, 2026

Engine evaluation

+0.34 White is slightly better

Best play: 8. d4 O-O 9. e4 Ndb4 10. dxc5 Bxc5 11. a3 Qxd1 12. Rxd1 Nc2

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

Overview

English Opening: Agincourt Defense, Keres Defense (ECO A14, Flank Openings) is a variation of the English Opening: Agincourt Defense, Neo-Catalan Declined, reached after 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O c5 6. cxd5 Nxd5 7. Nc3 Nc6 (7 moves).

In 28,685 rated Lichess games between players rated 1600 to 2500, White won 49.0%, Black 42.5% and 8.5% were drawn. White's most played move here is 8. d4, in 31% of those games.

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How to play against the English Opening: Agincourt Defense, Keres Defense

The most played answer, 8. d4, also scores best for White: 58.8%, with White winning 53.9% and Black 36.4% of 8,998 games. Of the main answers, 8. e4 scores lowest: 46.9%. Stockfish's first choice is also 8. d4.

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. “English Opening: Agincourt Defense, Keres Defense (A14)”. Lichess data as of 31 Oct 2026. https://chesscodex.org/openings/english-opening-agincourt-defense-keres-defense