That is it. White's position  deteriorates.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. c1d2  5... c7c5  6. a2a3  6... b4c3 Martirosyan  follows in the footsteps of his great countryman (well, soon-to-represent  the U.S.) Aronian. 7. d2c3  7... f6e4  8. g1e2  8... b7b6  9. d4d5  9... c8a6  10. b2b3  10... b6b5  11. d1d3  11... e4c3 A novelty that limits the options of the opponent. 12. e2c3  12... b5c4  13. b3c4  13... e6d5  14. d3d5 Tabatabaei wants to exploit the  holes in the black pawn structure. Therefore, he keeps the queens alive,  at least for now. 14... d8a5 However, White has problems of his own, mainly the lag in  development; thus, Black quickly brings everyone out. 15. d5d2  15... b8c6  16. f1e2  16... a8b8  17. e1g1 If White gets a couple of tempi to stabilize his  position in the center, Black will be sentenced to eternal suffering. 17... c6e5  18. f1c1 Well foreseen by White. The pawn is defended. 18... b8b3 Black's activity will soon net him a pawn. But after the  capture, Martirosyan will have his pieces stuck on the queenside, so Black has to be very, very careful. 19. f2f4 Setting a nasty little trap. 19... e5c6 when Black does not fall. 20. g1f2  20... f8d8 Once again, careful play by Martirosyan. 21. a1a2  21... b3a3 Finally picking up the pawn. 22. a2a3  22... a5a3  23. c3d5 With  the clear intention to try and trap the black queen. 23... d7d6  24. c1c3  24... a3a1  25. c3c1  25... a1a3  26. c1c3 White has a draw, but is there something more? 26... a3a1 Tabatabaei decided to play on. 27. d2c1  27... a1c1  28. c3c1  28... a6c8  29. c1a1  29... g8f8  30. e2f3  30... a7a6  31. a1b1  31... c8e6 Now Black keeps the extra pawn, and it gets harder and  harder for his opponent to prove compensation. 32. b1b7 Especially after  this inaccuracy. 32... c6a5  33. b7a7  33... a5c4  34. d5c7  34... c4d2  35. f3d5  35... e6d5  36. c7d5  36... d8b8  37. a7a6 The time trouble starts to tell. 37... d2e4  38. f2e2  38... f7f5  39. e2d3  39... b8b7  40. d3c4  40... f8f7  41. a6a8  41... h7h5  42. h2h4  42... g7g6  43. a8h8  43... e4d2  44. c4d3  44... f7e6 Black has  consolidated his advantage and slowly but surely converts his extra pawn. 45. d5c3  45... d2b1 First infiltration. 46. c3d1  46... b1a3  47. h8g8  47... b7b3  48. d3e2  48... e6f7  49. g8d8  49... a3c4  50. d8d7  50... f7e6  51. d7g7  51... e6f6  52. g7d7  52... b3a3  53. g2g3  53... a3a2  54. e2e1 