Typical Carlsen. Once his pieces are relieved, he hurries to improve them all.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. g1f3  4... b4c3 A pretty straightforward approach, but relatively rare. Although, how can the doubling of the pawns can be a rare idea in the Nimzo-Indian $2 5. b2c3  5... d7d6 Building the pawns a'la Capablanca, on the color of the missing bishop, is the quintessence of the line. 6. d1c2  6... d8e7 [#] 7. a2a4 [%c_effect a4;square;a4;type;Interesting;persistent;true] A nice move by Fedoseev, and a novelty. 7... c7c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] Unlike Kramnik, Carlsen is very aware of the vulnerability of his dark squares and builds a rock-solid wall against the opponent's dark-squared bishop. 8. e2e4  8... e6e5 Building the so-called Portisch-Huebner wall. 9. d4d5 This is often a concession. The closing of the center typically works well for the second player. 9... b8d7 Here and on the next few moves Black could have locked the queenside. 10. h2h4 Fedoseev, too, had a few opportunities to seize a bit more space on the queenside. However, White believes that it is more important to discourage his opponent from kingside castling while gaining more space on that part of the board. 10... h7h6  11. f1e2  11... e8d8 Another typical maneuver for the line and a favorite of Karpov's. 12. f3d2  12... d8c7 The king is pretty safe here. 13. d2f1  13... g7g6  14. g2g4  14... a7a5 [%c_effect a5;square;a5;type;GreatFind;persistent;true] At last, Black locks the queenside, but in the process fixes a huge weakness on a4. 15. h4h5 Fedoseev was counting on this move, but Black's reaction is unpleasant for White. 15... g6h5 [%c_effect h5;square;h5;type;GreatFind;persistent;true] Carlsen knows that he needs the kingside opened. After all, his chances are much higher there. 16. g4h5  16... d7b6 Now it is Black who will play on both sides of the board, as there are clear weaknesses on the a4, c4, and h5-squares. True, the black king is not perfectly safe, but it is easier to protect it. 17. f1g3  17... c8d7  18. c2b3  18... f6e8 Very logical and straightforward. Black is going for the f7-f5 advance at once. 19. c1e3  19... e8g7  20. e1d2  20... f7f5 Carlsen is clearly in command. 21. e4f5  21... g7f5  22. a1b1 seems like the win of a tempo, but in fact this only helps Black. 22... a8a6  23. g3f5  23... d7f5  24. b1b2  24... e7g7 [%c_effect g7;square;g7;type;GreatFind;persistent;true] Now that Black has claimed the only open file, his advantage is serious. 25. b3d1  25... h8g8  26. d2c1  26... g7h7  27. b2a2 In order to overprotect the a4-pawn.