Chess Opening Theory/1. d4/1...d5/2. Bf4/2...c5

= Accelerated London, Steinitz Countergambit =

Black responds by immediately striking in the center with c5. White's most common reply is /3. e3/ defending the d4-pawn and building a solid center. Accepting the offered pawn with 3. dxc5 is possible, but this is much less common as it doubles White's pawns on the c-file and abandons White's plan to construct a closed position for the London. 3. e4 leads to a reversed Albin Countergambit.