1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5  3... e7e6  4. b5c6  4... b7c6  5. b2b3  5... d7d6  6. e4e5  6... d6e5  7. d2d3 [%c_effect d3;square;d3;type;GreatFind;persistent;true] Carlsen strikes with a prepared novelty. Previously White captured automatically on e5. The move played in the game is a new plan, but it's also the computer's first choice, so probably Abasov knew about it. 7... f7f6  8. b1d2 White has long-term compensation for the sacrificed pawn. The c5-pawn is weak and will hardly escape a capture, while Black's structure makes his main asset, the bishop pair, not so useful at the moment. 8... g8h6  9. h1g1 [%c_effect g1;square;g1;type;GreatFind;persistent;true] An extraordinary plan that is certainly part of Carlsen's home preparation. White intends to advance the kingside and castle on the queenside. 9... c8a6 [%c_effect a6;square;a6;type;Inaccuracy;persistent;true] The computer considers this move an inaccuracy. I believe that Abasov had his eye on the typical c5-c4 advance, returning the pawn to open the game. 10. g2g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] 10... h6f7 Here and on the next moves Carlsen had the option of playing g4-g5, gaining space on the kingside before finishing development. 11. d1e2  11... f8e7  12. c1b2  12... d8a5  13. c2c4 This is a small inaccuracy. Maybe Carlsen wanted to avoid c5-c4 once and for all. 13... g7g5 [%c_effect g5;square;g5;type;Interesting;persistent;true] An interesting move, avoiding g4-g5. 14. h2h4  14... h7h6  15. g1h1  15... e8c8  16. e1c1  16... a5c7  17. d2e4  17... g5h4 [%c_effect h4;square;h4;type;Interesting;persistent;true] An excellent practical choice. It's necessary to change the trend of the game and look for active chances. 18. f3h4  18... h8g8  19. f2f4 [%c_effect f4;square;f4;type;GreatFind;persistent;true] Carlsen said in the interview that he didn't see a good alternative to this move. First he wanted to play slowly with 19.f3, but Black can play 19...Kb8 with the idea of ...Bc8 and then f6-f5. 19... e5f4 [%c_effect f4;square;f4;type;GreatFind;persistent;true] Otherwise White can play f4-f5 with the advantage. 20. e4f6  20... e7f6  21. e2e6 