Carlsen has his own  way.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. f1b5  3... b8d7  4. c2c3  4... g8f6  5. d1e2  5... a7a6  6. b5a4  6... b7b5  7. a4c2  7... c8b7  8. e1g1  8... g7g6 Flexible development by Grischuk. The bishops are ideally  placed on the long diagonals. 9. d2d4  9... f8g7 