Chess Opening Theory/1. d4/1...d5/2. Bf4/Chess Opening Theory/1. d4/1...Nf6/2. Bf4/2...d5

London System Main Position by transposition with ...d5 edit

The Main Position of the London System, 1. d4 Nf6 2. Bf4 d5, can be reached via the Queen's Pawn Opening after 1. d4 d5 2 Bc4 Nf6.