A13 Flank openings

English Opening: Agincourt Defense

English Opening: Agincourt Defense is an ECO A13 opening in the flank openings family. Study the line, review related variations, and practice the move order.

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Learn this opening

A13 study line

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Step through the line, then test it from memory.

The English Opening: Agincourt Defense reaches a named position after 6 moves: 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. d4

In practical games, this line matters because the early pawn and piece choices decide which middlegame plans are natural. Use the board above to learn the move order, then run the drill without hints before adding the opening to your regular queue.

If this exact branch does not appear in your games, study the related variations below. Openings often transpose, and recognizing the family pattern is more useful than memorizing one narrow sequence.