1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4 Carlsen had the psychological advantage after  winning the previous must-win game. He also opted for the Italian, just  like So did earlier in the match. 3... g8f6  4. d2d3  4... f8c5  5. e1g1  5... h7h6  6. c2c3  6... e8g8  7. b2b4  7... c5b6  8. a2a4  8... a7a6  9. b1d2  9... d7d6  10. f1e1  10... c6e7  11. d3d4 White is taking over the initiative, and So goes for a typical exchange operation. 11... e5d4 This is a novelty as well. Alas, based on a miscalculation. 12. c3d4  12... d6d5 The point behind Black's play. This as usual leads to  equality. However here Carlsen has the strong 13. e4e5 It happens that  the knight on e7 is particularly badly placed. 13... f6h5 The most active way to keep the game going. 14. c4f1  14... h5f4 At least this knight is active. Nevertheless, the mistake  that Black committed costed him dearly. White's advantage in the center is overwhelming. 15. d2b3  15... e7g6  16. a4a5  16... b6a7  17. c1f4 Simple and good. 17... g6f4  18. d1d2  18... f4g6  19. b3c5  19... f7f6 There is a natural desire to undermine the huge center. 20. f1d3 That's the problem. The knight does not have a good retreat  square. Or defense. Therefore, So needs to abandon any hope for  competition in the center. 20... f6f5  21. d3c2  21... f8e8  22. g2g3  22... a7c5 The last chance is to build some sort of blockade. 23. b4c5  23... c8e6  24. a1b1  24... a8b8  25. e1e3  25... g6e7  26. e3b3  26... d8c8 It is obvious that  Carlsen is strategically winning. He controls the center, has more space,  better pieces, everything... 27. f3h4 A nice maneuver. It is time to  revert to the main kingside attack plan. 27... e8f8  28. h4g2  28... e6d7  29. h2h4  29... d7a4  30. b3b2  30... a4c2  31. d2c2  31... e7c6 ...which So missed. 32. c2c3  32... g7g5  33. h4g5  33... h6g5  34. f2f4  34... g8g7  35. g1f2  35... f8h8  36. f4g5  36... h8h2 So tries every single little chance to confuse  his opponent. 37. c3f3 Once more things get complicated. 37... c6d4  38. f3d5  38... d4c6  39. e5e6 Now it is quickly over, as Carlsen finally takes the tactical  chances away from his opponent with a queen trade. 39... c8d8  40. d5d7  40... d8d7  41. e6d7  41... b8d8  42. b2d2  42... c6e5 