1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. a2a3 The Saemisch Variation of the Nimzo-Indian is quite risky, since White usually needs to sacrifice a pawn on the queenside, but the attack that is generated on the other side of the board makes this line very dangerous to meet in practice.