A13

English Opening: Agincourt Defense, Tarrasch Defense

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. b3 Nc6 6. O-O Be7

The English Opening: Agincourt Defense, Tarrasch Defense is a chess opening classified under ECO code A13. It is reached after the moves 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. b3 Nc6 6. O-O Be7.

It belongs to the English Opening family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.

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