Tree path 4 levels English Opening › Agincourt Defense › English Opening: Agincourt Defense › English Opening: Symmetrical Variation, Hedgehog Defense
- Chess Codex
- English Opening A10
- Agincourt Defense A13
- English Opening: Agincourt Defense A13
- English Opening: Symmetrical Variation, Hedgehog Defense A30 you are here
English Opening: Symmetrical Variation, Hedgehog Defense
Overview
English Opening: Symmetrical Variation, Hedgehog Defense is a named branch in the Flank Openings group of chess theory, classified under ECO A30.
The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.
It is reached after 12 plies of play, with the move sequence 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7.
In the opening tree, this line branches off from English Opening: Agincourt Defense, part of the broader English Opening system.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- A30
- Group
- Flank Openings (A)
- Plies
- 12
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
111,485 games · White 47.9% / Draw 8.7% / Black 43.4%
| Moves | Games | W / D / B |
|---|---|---|
| d4 | 43,519 | |
| Re1 | 20,933 | |
| b3 | 16,107 | |
| d3 | 14,955 | |
| e3 | 9,784 | |
| a3 | 2,649 | |
| Qc2 | 1,224 | |
| Rb1 | 801 |
Source: Lichess Opening Explorer · cached 2026-09-26 00:47:43
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