Carlsen wants to push the f-pawn as  soon as possible.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... d5c4  5. e2e4  5... b7b5  6. e4e5  6... f6d5  7. c3b5  7... d5b6  The new episode of the opening discussion. Nakamura comes well prepared  and does not mind repeating yesterday's result... 8. a2a4  8... d8d7 N This time Nakamura comes with a novelty. 9. f1e2  9... b8c6  10. e1g1  10... c6a5 The point behind Black's novelty. The a5-square is available for his knight.