Tree path 4 levels English Opening › Anglo-Indian Defense › Réti Opening: Anglo-Slav Variation › London Defensive System
- Caissa Codex
- English Opening A10
- Anglo-Indian Defense A15
- Réti Opening: Anglo-Slav Variation A12
- London Defensive System A12 you are here
Réti Opening: Anglo-Slav Variation, London Defensive System
Overview
Réti Opening: Anglo-Slav Variation, London Defensive System is a named branch in the Flank Openings group of chess theory, classified under ECO A12.
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 8 plies of play, with the move sequence 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5.
In the opening tree, this line branches off from Réti Opening: Anglo-Slav Variation, 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
- A12
- 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
23,966 games · White 49.1% / Draw 7.1% / Black 43.8%
| Moves | Games | W / D / B |
|---|---|---|
| Bg2 | 14,043 | |
| Bb2 | 8,303 | |
| d3 | 1,185 | |
| Ba3 | 173 | |
| Nc3 | 95 | |
| d4 | 66 | |
| cxd5 | 47 | |
| Nh4 | 20 |
Source: Lichess Opening Explorer · cached 2026-09-26 00:41:34
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