Aronian wins a couple of tempi, and that's all he needs.
1. e2e4  1... c7c5  2. g1f3  2... d7d6 A somewhat unusual opening choice from the  Armenian-American GM that clearly indicates his intentions. 3. f1b5  3... b8d7  4. d2d4  4... c5d4  5. d1d4  5... a7a6  6. b5e2  6... g8f6  7. e1g1  7... e7e6  8. f1d1  8... f8e7  9. b1c3  9... d8c7  10. a2a4 This is quite a  strange version of the Scheveningen, favorable for White. Black did not  manage to bring his pieces out, and the weakness of the b6-square will  soon start to tell. 10... e8g8 \"I was just trying to play, not  necessarily playing for a win but just to get a game, but my opponent knew the opening very well and I think I got a slightly worse position.\"  (Aronian) 11. a4a5 The b6-square is fixed. 11... f8d8  12. c1e3  12... f6g4 Black is trying  to relieve the pressure a bit. 13. e3g5  13... g4f6  14. d4c4 Deac chooses to play a somewhat better endgame. 14... c7c4  15. e2c4  15... b7b5 At last freeing himself a bit on the queenside. 16. a5b6  16... d7b6  17. c4e2  17... c8b7  18. f3d2  18... d8d7 \"I thought I need to start  confusing myself and my opponent.\" (Aronian) Black is trying to prepare  the freeing d6-d5 break. 19. e2d3 Deac misses a good chance. 19... d7c7  20. f2f3  20... d6d5 That is it, Black is just fine now. 21. g5e3  21... d5e4  22. d2e4  22... f6d5  23. e3d4  23... f7f6  24. b2b3  24... g8f7 Aronian simply improves his position. The weakness of the a6-pawn is well compensated by the  centralized black pieces and the play along the half-open files. As usual  in the Sicilian endgames, Black starts to slowly take over the initiative.  25. c3d5  25... b6d5  26. d3c4  26... a6a5  27. c2c3  27... g7g5 That is the other reason why Black's  prospects are better in the endgame. He can expand on the kingside too. 28. a1a4  28... f6f5  29. e4g3  29... e7c5 An important trade that softens White's  position. 30. d4c5  30... c7c5  31. c4d5  31... b7d5  32. c3c4  32... d5c6  33. a4a3  33... a5a4 The bishop  is clearly more superior than the knight, and with this move Aronian frees himself from the weakness while creating a weakness in the enemy camp.  Deac has to concentrate all his energy into the survival. 34. d1a1  34... a8g8 Opening a second front. 35. b3a4  35... g5g4  36. f3f4  36... c5c4  37. g3e2  37... g8b8  38. a3a2  38... c6d5  39. a4a5  39... c4b4 Since White needs to defend his second rank, he  slowly loses the a-pawn. 40. a2d2  40... b4b2  41. a1d1  41... b2d2  42. d1d2  42... b8a8 There it is, the pawn is lost. However, not everything is decided yet as all the  remaining pawns are on the same flank. 43. e2c3  43... a8a5  44. g1f2  44... d5c6  45. c3d1  45... a5a4 Provoking another weakening. 46. g2g3  46... a4a1 The  impression is that Black will sooner or later force the opponent into  zugzwang and win the h2-pawn. 47. d1b2 Deac, however, found a  brilliant defensive idea. 47... a1h1  48. b2d3 That was the whole  idea! Deac sacrifices a second pawn but builds a fortress. 48... h1h2  49. f2e3  49... h2d2  50. e3d2 One of the black extra pawns is fully blocked by the white knight, whereas White's only vulnerable point, the  pawn on g3, is nicely defended by the white king. 50... f7e7  51. d3e5  51... e7d6  52. d2e3  52... d6d5  53. e3d3  53... c6e8  54. d3e3  54... h7h5  55. e5d3  55... d5c4 And still, Black finds a  way to bother the opponent one last time. 56. d3e5  56... c4c3  57. e5d3  57... h5h4 That's the last chance. 58. g3h4  58... g4g3  59. d3e5 Alas, the Romanian GM stumbles, just a step away from the draw. 59... e8h5 This move Deac obviously saw. He also knew that his knight and king are limited by the bishop. Apparently, he believed that 60. e5d7 would save him and likely missed