Tree path 4 levels English Opening › Agincourt Defense › English Opening: Agincourt Defense › Catalan Defense, Semi-Slav Defense
- Chess Codex
- English Opening A10
- Agincourt Defense A13
- English Opening: Agincourt Defense A13
- Catalan Defense, Semi-Slav Defense A13 you are here
English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense
Overview
English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense is a specific line in the Flank Openings family (ECO A13), arising from a recognised theoretical position.
The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.
The line arises from 8 plies — specifically the moves 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 c6.
The line refines English Opening: Agincourt Defense, which traces back to the root opening English Opening.
Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.
- ECO code
- A13
- Group
- Flank Openings (A)
- Plies
- 8
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
590,937 games · White 54.2% / Draw 6.7% / Black 39.1%
| Moves | Games | W / D / B |
|---|---|---|
| O-O | 390,227 | |
| b3 | 94,889 | |
| cxd5 | 41,517 | |
| d4 | 33,198 | |
| Qc2 | 19,547 | |
| Nc3 | 4,399 | |
| d3 | 2,722 | |
| e3 | 851 |
Source: Lichess Opening Explorer · cached 2026-09-26 00:42:15
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