Bronstein, Or vs Chigaev, Maksim

1. d4 1... Nf6 2. c4 2... e6 3. Nc3 3... Bb4 4. e3 4... b6 5. Ne2 5... Ne4 6. Bd2 6... Nxd2 7. Qxd2 7... Bb7 8. a3 8... Be7 9. d5 9... a5 10. g3 10... O-O 11. Bg2 11... e5 12. Qc2 12... d6 13. h4 13... Nd7 14. O-O-O 14... Nc5 15. g4 15... a4 16. g5 16... f5 17. f4 17... Ra5 18. Kb1 18... Qe8 19. Nb5 19... Bd8 20. Ng3 20... Ba6 21. Bf1 21... Bc8 22. Bh3 22... g6 23. h5 23... exf4 24. exf4 24... Qe3 25. Ne2?! 25... Qe4?! 26. Ned4? 26... Bd7?? 27. Bg2? 27... Qxc2+ 28. Kxc2 28... Nb3? 29. Ne6 29... Bxe6 30. dxe6 30... Kg7 31. hxg6 31... hxg6 32. Rh6 32... Rh8 33. Rxh8 33... Kxh8 34. Nxc7 34... Rc5 35. Nd5 35... Rxc4+ 36. Kb1 36... Kg7 37. e7 37... Bxe7 38. Nxe7 38... Rxf4 39. Bd5 39... Rg4 40. Nc8 40... Rxg5 41. Nxb6 41... Nc5 42. Bc6 42... Rg4 43. Rxd6 43... g5 44. Rd5 44... Rg1+ 45. Ka2 45... Nb3 46. Bxa4 46... Nc1+ 47. Kb1 47... g4 48. Kc2 48... f4 49. Rg5+?! 49... Kh6 50. Rg8 50... Kh7 51. Rf8 51... f3 52. Nd5 52... Ne2 53. Kd2?? 53... Kg7 54. Rf5 54... Ng3?! 55. Rf4 55... Nh5 56. Rd4? 56... g3 57. Ne3 57... g2?? 58. Rg4+ 58... Kh6 59. Bc6 59... Nf6 60. Nf5+ 60... Kh5 61. Rg3 61... Rf1 62. Ng7+?? 62... Kh6 63. Nf5+ 63... Kh7 64. Rh3+? 64... Nh5 65. Rxh5+ 65... Kg6 66. Nh4+?? 66... Kxh5 67. Nxf3 67... Kh6 68. Ng1?! 68... Rxg1 69. Bxg2 69... Rxg2+ 70. Kc3 70... Rg4 71. b4 71... Kg6 72. a4 72... Kf6 73. a5 73... Ke6 74. Kb3 74... Kd6 75. Ka4 75... Ke5