1. e2e4  1... b8c6 My favorite childhood opening! 2. g1f3 The simplest reply. It  is an invitation for the "normal play" after 2....e5. 2... d7d5 which is rejected. Carlsen goes for a super-risky Scandinavian instead. 3. e4d5  3... d8d5  4. b1c3  4... d5a5  5. f1b5  5... c8d7  6. e1g1  6... a7a6  7. b5a4 The bishop should be kept for the time being. 7... g8f6  8. d2d3  8... e8c8 A novelty which does not inspire. 9. f3g5 This reveals one of the Scandinavian problems: the pawn on f7  is often in danger whenever Black castles long. 9... d7g4 Active  defense. 10. d1d2  10... g4h5  11. a4c6  11... b7c6  12. d2e1 Aronian acknowledges he did not choose  the right spot for his main attacker. 12... h7h6  13. g5e4 