[#]
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. f1d3  5... c7c5  6. g1e2  6... d7d5  7. a2a3  7... b4c3  8. b2c3  8... d5c4  9. d3c4  9... d8c7 One of Nimzo-Indian tabias. 10. c4a2 This is  Carlsen's preferred choice. 10... b7b6  11. e1g1  11... c8a6  12. c1b2  12... b8c6 