1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. f2f3 One of the most aggressive variations to face the Nimzo-Indian Defense. 4... c7c5 This is a very popular move these days, although there is nothing wrong with the old 5...d5 move. 5. d4d5  5... d7d6 