Tree path 7 levels English Opening › Agincourt Defense › English Opening: Agincourt Defense › English Opening: Agincourt Defense › English Opening: Neo-Catalan › English Opening: Neo-Catalan Declined › English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3
A14

English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3

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Overview

English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 is a named branch in the Flank Openings group of chess theory, classified under ECO A14.

The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.

It begins with 9 plies and takes 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 to reach the canonical position.

In the opening tree, this line branches off from English Opening: Neo-Catalan Declined, part of the broader English Opening system.

2 named variations grow from this line, including English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3, English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3.

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ECO code
A14
Group
Flank Openings (A)
Plies
9
Parent
English Opening: Neo-Catalan Declined
Direct variations
2

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Variations (2)