Current position
London System
1.d4 Nf6 2.Nf3 g6 3.Bf4
The London System starts with 1.d4 Nf6 2.Nf3 g6 3.Bf4 and is catalogued under ECO A48, in the flank openings half of the book. The catalog indexes 4 lines inside it, grouped into 2 named variations, and the position after those moves has 1 playable continuation to walk from here.
Root edges show how often each move is played around your Elo. Use the arrow on a position to reveal the next replies.
Current setup
Move ideas
Takes central space with a protected pawn and frees the queen’s bishop.
Idea: Build a stable center that supports a broad positional setup.
Develops a knight and prevents White from occupying e4 unchallenged.
Idea: Keep the central pawns flexible and choose an Indian setup after White commits.
Develops the knight to f3, bringing it into the game.
Idea: Improve piece coordination and clear the back rank for castling and the rooks.
Advances the g-pawn to gain kingside space and control new squares.
Idea: Create useful wing space while keeping the central structure flexible.
Develops the bishop to f4, bringing it into the game.
Idea: Improve piece coordination and clear the back rank for castling and the rooks.
Develops the bishop to g7, bringing it into the game.
Idea: Improve piece coordination and clear the back rank for castling and the rooks.
Waiting for Lichess game popularity.
Each line below is an indexed entry under London System. Open one to load it on the board and keep exploring from that position.
ECO groups openings by the structures they lead to, so these families tend to share plans with the London System.