A10

English Opening

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Overview

English Opening is a major root opening in the Flank Openings family (ECO A10). It serves as the entry point for a wide subtree of named variations.

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 1 ply — specifically the moves 1. c4.

11 distinct sub-variations branch from this opening; prominent examples include Agincourt Defense, Anglo-Dutch Defense, Anglo-Indian Defense, and others.

Across every depth of the tree this branch holds 179 documented sub-variations, reflecting decades of analytical work.

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
A10
Group
Flank Openings (A)
Plies
1
Direct variations
11
Total in subtree
179

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

101,529,932 games · White 50.4% / Draw 5.3% / Black 44.3%

MovesGamesW / D / B
e528,893,656
Nf621,201,070
c512,163,510
e611,172,037
c66,530,290
d56,264,301
g65,958,341
d63,128,517

Source: Lichess Opening Explorer · cached 2026-09-26 00:39:36

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Variations (11)

Show all 179 sub-variations (full subtree)

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