context: 1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. d2d3  6... b7b5  7. a4b3  7... d7d6  8. a2a4  8... c8d7 This is Ding's favorite move in this important position for Ruy Lopez opening theory. 9. b1c3 A move that Carlsen had already tested in the 2010 World Blitz Championship. 9... c6a5  10. b3a2  10... b5b4  11. c3e2 The knight is preparing to go to g3. The option is to take it to d5, but this doesn't seem to be dangerous for Black. 11... c7c5  12. f3d2 White rushes to play f2-f4. Carlsen continues to repeat his game from 2010. 12... e8g8  13. f2f4 A new move. 13... a8b8 A strange move: I'm not sure how it helps Black's position. 14. d2c4  14... a5c4  15. a2c4  15... a6a5  16. f4e5 