1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8c5 A somewhat unexpected choice by Black. One would normally expect the in-depth analyzed Marshall  Attack by Aronian. 6. c2c3  6... b7b5  7. a4b3  7... d7d6  8. a2a4  8... c8b7  9. d2d4  9... c5b6  10. c1g5  10... e8g8  11. a4b5  11... a6b5  12. a1a8  12... b7a8  13. d4d5  13... c6a5  14. b3a2 The  black pieces are obviously misplaced, and he already finds it hard to  defend against the simple threat Nb1-a3! 14... c7c6 All of this was practically blitzed by Aronian, including this novelty. However, it seems  as he somehow mixed his opening lines. 15. b1a3 Now, how to defend the queenside? 15... c6d5  16. a2d5 Of  course! Carlsen needs this square for his pieces. 16... b5b4 At last  Aronian thinks. And he thinks heavily. In fact, he spent almost all his  time on the clock. What was he thinking about? Probably he was just trying to convince himself that it is worth to continue playing a bit more... 17. c3b4 