1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. c1d2 This is considered to be one of the  most harmless continuations against the Nimzo-Indian, but it was used in  the past by Alekhine. 4... e8g8  5. g1f3  5... c7c5  6. a2a3  6... b4c3  7. d2c3  7... f6e4  8. a1c1  8... b7b6  9. g2g3  9... c8b7  10. f1g2  10... e4c3 Aronian hurries to get rid of the bishop pair. 11. c1c3  11... c5d4  12. d1d4  12... b8c6  13. d4d2 An obvious move and a novelty,  which both players were hardly aware of. 13... d8e7  14. e1g1  14... f8d8 Now a Hedgehog pawn structure arose in which  both sides traded a couple of minor pieces. White has some pressure along  the d-file, but Black's position is as solid as a rock. His last move  prepares the freeing d7-d5 break, therefore: 15. e2e4  15... a8c8  16. f1d1  16... d7d6  17. b2b3 An important prophylaxis. 17... c6e5  18. f3d4 Artemiev needs to keep some minor pieces on the board if he wants to play for something. 18... a7a6  19. c3e3 White continues maneuvering. 19... e7c7 Getting ready for counter-actions. 20. h2h3  20... h7h6  21. d2b2 The queen steps out of the X-raying rook. 21... c7c5  22. a3a4  22... g8f8 Aronian decided to defend his only weakness with his king,  but this might be risky... 23. g1h2  23... a6a5  24. b2e2  24... e5c6  25. e3d3  25... c6d4 Finally Black traded the annoying  knight. 26. d3d4  26... c8c7  27. e2d2  27... c7d7  28. d4d3  28... f8e7  29. f2f4 But it is still a  bit awkward for Black, as the e4-e5 break is always in the air. Black  defends his rook with: 29... b7c6  30. d1f1 Then blunders: 30... g7g5  31. f4g5  31... h6g5  32. d3d5 Brilliant! The white queen gets an access to the kingside. 32... c6d5  33. d2g5  33... e7f8  34. c4d5 Now the black queen is cut out of the defense. 34... d7e7  35. e4e5 The same powerful idea! The black queen is cut along the fifth  rank, but it is also deprived of access on the long diagonal. 35... d8c8 The rook steps out of the pin... just to land under another. 36. f1f4  36... d6e5 This drops material, but the alternative was mate. 37. f4c4  37... e6d5  38. g5h6  38... f8e8  39. c4c5  39... c8c5  40. h6b6 The rest was easy for  White. 40... e7c7  41. g2d5  41... c5c2  42. d5g2  42... e5e4 