Indian Defense: London System

An entry in the Encyclopedia of Chess Openings (ECO A46), reached after 5 half-moves: 1. d4 Nf6 2. Nf3 e6 3. Bf4.

Black rook — Use ← → arrows or click moves to step through.

Black knight — Use ← → arrows or click moves to step through.

End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Indian Defense: London System is an opening in the Encyclopedia of Chess Openings, classified under code A46. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 5 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. Nf3 e6 3. Bf4.

It belongs to the Indian Defense family. Within that family this is a sub-variation (the London System line).

The opening sequence in prose form: 1.d4 Nf6, 2.Nf3 e6, 3.Bf4. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.