The only way to fight for the advantage.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8b4  5. c1g5  5... h7h6  6. g5f6  6... d8f6  7. d1a4  7... b8c6  8. e2e3  8... e8g8  9. a1d1 A mysterious rook move, as Nimowitsch would have called  it. The idea is to be prepared for Black's main operation: capture on c4,  followed by e6-e5. In the meantime White tries to save a tempo on the  capture on c4 and does not want to move his bishop. 9... f8d8  10. a4b3  10... f6e7 Anand improves on a game of Korobov. The  queen supports the central freeing move e6-e5. 11. a2a3  11... d5c4 