1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. b1c3  3... d7d5 Not a major surprise; the Gruenfeld remains  Vachier-Lagrave's main choice against 1.d4. 4. g1f3  4... f8g7  5. d1b3  5... d5c4  6. b3c4  6... c8e6  7. c4a4  7... e6d7  8. a4b3  8... c7c5  9. d4d5  9... b7b5 Since White has a lost a few tempi shuffling his queen back and forth, Black has all the reasons to play aggressively. 10. c3b5  10... b8a6  11. b5c3  11... a8b8  12. b3d1  12... d8a5  13. d1d2 This move, which was played  instantly, is a novelty which will hardly be repeated ever. Aronian might  have confused something. 13... a6b4  14. e2e4  14... d7a4 This might have been missed by White.  Vachier-Lagrave creates very concrete threats, which cannot be parried. No wonder, Black has almost all his pieces out, whereas Aronian uses less  than half his army. 15. b2b3  15... a4b3  16. a1b1  16... b3c2 The rook is trapped. 17. b1b3  17... c2b3  18. a2b3  18... f6d7 Black won material, but does not slow his  initiative. Now that the long diagonal has been opened more trouble awaits Aronian. 19. c1b2  19... e8g8 Simple and good. 20. f1e2  20... b4a2 Forcing more trades. 21. c3a4  21... a5a4 The point behind  his previous move. Vachier-Lagrave can even afford parting with his queen, that strong is his position. 22. b2g7  22... b8b3  23. g7f8  23... b3b1  24. e2d1  24... a4e4  25. e1f1  25... a2c3  26. d2c3  26... b1d1  27. f3e1  27... d7f8 White is down two pawns and  completely stuck. The rest is easy: 28. h2h4  28... e4d5 