1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... a7a6 Carlsen has used this variation of the Queen's Gambit many times. 5. c4d5 This move is the most played. White needs to avoid the threat of capture on c4 followed by b7-b5. 5... e6d5  6. c1f4 This move isn't very dangerous. 6... f8d6  7. f4d6 A natural move, but the alternatives 7.Bg3 and 7.Be5 are also important. 7... d8d6  8. e2e3  8... e8g8  9. f1d3  9... b7b6 I found few games in my database with this plan. The development of the bishop on g4 seems to be fine for Black. 10. e1g1  10... c8b7  11. d1c2 Simple development. White prepares Rfd1 and Rac1. 11... b8d7  12. f1d1  12... f8e8  13. a2a3 A new move and an interesting plan. White wants to play b4, even after c7-c5. 13... c7c5  14. d4c5  14... b6c5  15. b2b4 That's the idea. The break on b4 is a typical way to fight against hanging pawns (Black's formation with pawns on d5 and c5). 15... a8c8  16. b4c5  16... d7c5 Now we have a classic isolated queen pawn structure, with probably a small advantage for White, but nothing serious. 17. a1c1 An inaccuracy, since the pawn on a3 is now unprotected. 17... d5d4 An interesting idea to create attacking chances. It will work very well in the game. 18. f3d4  18... f6g4 Black's pieces are dangerously pointing toward the kingside. 19. g2g3 After this move Black achieves a clear advantage. 19... c5d3  20. c2d3  20... d6a3 Black has a distant passed pawn and a strong bishop with attacking potential on the light squares. 21. h2h3  21... g4e5  22. d3c2  22... h7h5 An excellent practical move, giving the king some air and creating potential threats on the kingside with h5-h4. 23. g1f1 An ugly move that looks like desperation. 23... a6a5  24. c2b3  24... b7a6  25. f1g2  25... a3b3  26. d4b3  26... e5d3  27. c1c2  27... a6b7  28. g2f1  28... b7a6  29. f1g2  29... c8c7 The decisive plan. Carlsen prepares to double rooks on the c-file, leaving White paralyzed. 30. b3d4  30... e8c8  31. d4e2  31... d3b4  32. c2d2 This makes it easy for Black. 32... c7c3  33. e2c3  33... c8c3 The endgame is easily winning. 34. d2d8  34... g8h7  35. d8d7  35... a6c4  36. d7a7  36... a5a4  37. a7a4  37... c4b3  38. a4a3  38... b3d5  39. d1d5  39... b4d5  40. a3a5  40... d5f6 In some endgames it's difficult to win even with the advantage of an extra piece, if the pawns are on the same flank, but here Carlsen has no problem demonstrating the win. 41. g2f3  41... c3c4  42. a5f5  42... h7g6 