1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. d1c2 Still the main choice against the Nimzo-Indian Defense. 4... e8g8  5. a2a3  5... b4c3  6. c2c3  6... d7d5  7. c1g5  7... c7c5  8. d4c5  8... d5d4  9. c3g3 Rapport has an opinion of his own. The move 9.Qf3 gained popularity, thanks to the efforts by the world champion. 9... b8d7  10. g1f3 