1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. a2a3 The Saemisch Variation of the Nimzo-Indian is one of the most risky, optimistic, and ambitious options for White. I've always seen this move as a provocation: White practically ignores Black's previous move and forces him to capture on c3, which could be seen as a waste of time. In the subsequent play, White almost always loses the c-pawn (and this game will be no exception), but seeks compensation by using the center and the bishop pair to fight for the initiative in a sharp position with chances for both sides.