1. g1f3  1... d7d5  2. d2d4  2... g8f6  3. c2c4  3... e7e6  4. b1c3  4... f8e7  5. c4d5  5... e6d5  6. c1f4  6... c7c6  7. d1c2  7... g7g6  Probably Black's most important idea in the Carlsbad: getting rid of the  weak light-squared bishop. 8. e2e3  8... c8f5  9. f1d3  9... f5d3  10. c2d3  10... b8d7  11. h2h4  This is how White tries to make use of the opponent's weakened kingside  nowadays. 11... a7a5 N 12. e1f1 "I felt this is strange." (Aronian) 12... a5a4 Consistently creating play on his flank. Aronian is not in a  hurry to castle any time soon. 13. a2a3  13... d8b6  14. d3c2  14... h7h5  15. f4g5  15... e8g8 Now he can. It is evident that Black  is doing fine out of the opening. 16. f3e5  16... f8e8  17. g5f6  17... d7f6  18. h1h3 "A bit strange." (Aronian) 18... b6b3 "At some point I thought I had a big advantage, but then he somehow  got everything together." (Aronian) 19. c2b1 Carlsen wants to keep the  queens on the board as he is still dreaming of a kingside attack. 19... f6e4 Black firmly takes over the initiative. 20. c3e4  20... d5e4  21. b1e4  21... e7d6  22. h3g3  22... d6e5  23. d4e5  23... b3b5  24. f1g1 With the stronger major pieces and  nice queenside majority, all Black needs is to trade the queens and enjoy  his edge. 24... e8e5 