How is this a draw?

looks winning: 51. ... 26-31 52. 22x36 37-41 53. 36-18 41-46 54. 18x45

49. 10-05 40-44 50. 05x46 44x33 51. 47-42 26-31 52. 46-41 25-30 53. 41-47 31-36 54. 42-37 33-39 55. 47-38 30-35 56. 38-16 36-41 57. 37x46 35-40 58. 16-32 39-44 59. 50x39 40-45 60. 32-14 45-50 61. 14-37 50x41 62. 46x37