A48
London System
1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3
In the London System, aim to understand the plans and pawn structures, not just memorize the first moves.
The London System is a chess opening classified under ECO code A48. It is reached after the moves 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3: 7 moves in, with Black to play.
Learn its typical plans and pawn structures rather than memorizing moves — that’s what holds up over the board.
1 named variation branches from this position; the list at the end of the page goes one move deeper into each.
Play the London System? See where you go wrong.
Deepline reviews your real games, finds the exact moves that cost you, and trains the fixes.
Analyze my games free →Variations of the London System
- Poisoned Pawn Variation1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Qb6 5. Nc3