Some practical chances were after 48. 36-31 12-18 49. 31-27 22x31 50. 26x37 18-22 51. 16-11 17x06 52. 38-32 and black should be careful to make draw

48. 36-31 12-18 49. 31-27 22x31 50. 26x37 18-22 51. 16-11 17x06 52. 38-32 15-20 53. 24x15 13-19 54. 32x23 19x28 55. 25-20 14x25 56. 15-10 22-27? (25-30=) 57. 10-05 28-33 58. 39x28 25-30 59. 28-22 27x18 60. 05-28 30-35 61. 28-44 18-23 62. 37-31 23-29 63. 31-27 29-34 64. 44-33 35-40 65. 27-21 40-45 66. 33-50 34-40 67. 21-16

48. 36-31 12-18 49. 31-27 22x31 50. 26x37 18-22 51. 16-11 17x06 52. 38-32 06-11(?) this move gives very tricky draw! 53. 32x23 22-27 54. 25-20 14x25 55. 23-19 15-20? (13-18!19-14 25-30 24x35 15-20 14x25 18-22! 39-33 11-17 25-20 27-32 37x28 22-27=) 56. 19x08 20x29 57. 08-02