1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4 The Nimzo-Indian is an essential part of almost every top player's repertoire. 4. g1f3  4... e8g8  5. a2a3  5... b4c3  6. b2c3  6... c7c5  7. g2g3  7... b7b6 