1. 3x3 at (11): (1,2) = 7 inconsistent with (2,1) = 7, (1,2) now [5] 2. (1,3) = 3, row insufficiency (1,2) = (1,7) = 5, (1,3) now [2,5] 3. (1,3) = 5 inconsistent with (1,2) = 5, (1,3) now [2] 4. (1,7) = 5 inconsistent with (1,2) = 5, (1,7) now [3] 5. (1,8) = 2 inconsistent with (1,3) = 2, (1,8) now [7,5] 6. (1,8) = 5 inconsistent with (1,2) = 5, (1,8) now [7] 7. 3x3 at (11): (2,3) = 1 inconsistent with (1,1) = 1, (2,3) now [8,9,2,5] 8. 3x3 at (11): (2,3) = 8, insufficiency [(2,2,[3]),(3,3,[3])] wrt [3], (2,3) now [9,2,5] 9. (2,3) = 2 inconsistent with (1,3) = 2, (2,3) now [9,5] 10. 3x3 at (11): (2,3) = 5 inconsistent with (1,2) = 5, (2,3) now [9] 11. 3x3 at (14): (2,4) = 8 inconsistent with (1,5) = 8, (2,4) now [2,9] 12. (2,4) = 9 inconsistent with (2,3) = 9, (2,4) now [2] 13. 3x3 at (14): (2,5) = 6, insufficiency [(1,5,[8]),(2,6,[8])] wrt [8], (2,5) now [5] 14. 3x3 at (14): (2,6) = 8 inconsistent with (1,5) = 8, (2,6) now [6] 15. (2,7) = 5 inconsistent with (2,5) = 5, (2,7) now [1,9,8] 16. (2,7) = 9 inconsistent with (2,3) = 9, (2,7) now [1,8] 17. (2,9) = 2 inconsistent with (2,4) = 2, (2,9) now [9,1] 18. (2,7) = 1, row insufficiency (2,3) = (2,9) = 9, (2,7) now [8] 19. (2,9) = 9 inconsistent with (2,3) = 9, (2,9) now [1] 20. (3,1) = 3, row insufficiency (3,3) = (3,4) = 8, (3,1) now [4,6] 21. 3x3 at (11): (3,2) = 7 inconsistent with (2,1) = 7, (3,2) now [8,6,4] 22. (3,2) = 8, row insufficiency (3,3) = (3,4) = 3, (3,2) now [4,6] 23. (3,3) = 3, column insufficiency (2,3) = (9,3) = 9, (3,3) now [8] 24. (3,4) = 8 inconsistent with (3,3) = 8, (3,4) now [3] 25. (3,5) = 3 inconsistent with (3,4) = 3, (3,5) now [7,6,4] 26. (3,5) = 6, row insufficiency (3,1) = (3,2) = 4, (3,5) now [7,4] 27. (3,5) = 4, row insufficiency (3,1) = (3,2) = 6, (3,5) now [7] 28. (4,1) = 4, column insufficiency (3,1) = (8,1) = 6, (4,1) now [3] 29. (4,2) = 9, row insufficiency (4,1) = (4,9) = 3, (4,2) now [5,8,4] 30. (4,2) = 5 inconsistent with (1,2) = 5, (4,2) now [8,4] 31. (3,2) = 4, column insufficiency (4,2) = (6,2) = 8, (3,2) now [6] 32. (3,1) = 6 inconsistent with (3,2) = 6, (3,1) now [4] 33. (4,8) = 8, row insufficiency (4,2) = (4,6) = 4, (4,8) now [5] 34. (4,9) = 3 inconsistent with (4,1) = 3, (4,9) now [9] 35. (5,2) = 6 inconsistent with (3,2) = 6, (5,2) now [9,4] 36. (5,2) = 4, column insufficiency (4,2) = (6,2) = 8, (5,2) now [9] 37. (5,3) = 2 inconsistent with (1,3) = 2, (5,3) now [1,9] 38. (5,3) = 9 inconsistent with (5,2) = 9, (5,3) now [1] 39. (5,7) = 1 inconsistent with (5,3) = 1, (5,7) now [9,4] 40. (5,5) = 4, row insufficiency (5,2) = (5,7) = 9, (5,5) now [6] 41. (5,7) = 9 inconsistent with (5,2) = 9, (5,7) now [4] 42. (5,8) = 1 inconsistent with (5,3) = 1, (5,8) now [2,6] 43. (5,8) = 6 inconsistent with (5,5) = 6, (5,8) now [2] 44. (6,1) = 3 inconsistent with (4,1) = 3, (6,1) now [2,4] 45. (6,1) = 4 inconsistent with (3,1) = 4, (6,1) now [2] 46. (6,2) = 8, row insufficiency for [(1,[2]),(4,[3,2]),(8,[1,2]),(9,[1,3,2])] wrt [2], (6,2) now [4] 47. (4,2) = 4 inconsistent with (6,2) = 4, (4,2) now [8] 48. (4,6) = 8 inconsistent with (4,2) = 8, (4,6) now [4] 49. (6,4) = 3 inconsistent with (3,4) = 3, (6,4) now [2,8] 50. (6,4) = 2 inconsistent with (6,1) = 2, (6,4) now [8] 51. (6,8) = 8 inconsistent with (6,4) = 8, (6,8) now [1,2] 52. (6,8) = 2 inconsistent with (6,1) = 2, (6,8) now [1] 53. (6,9) = 1 inconsistent with (6,8) = 1, (6,9) now [3,2] 54. (6,9) = 2 inconsistent with (6,1) = 2, (6,9) now [3] 55. (7,5) = 5 inconsistent with (2,5) = 5, (7,5) now [3,7] 56. (7,5) = 7 inconsistent with (3,5) = 7, (7,5) now [3] 57. (7,7) = 3 inconsistent with (7,5) = 3, (7,7) now [5,8] 58. (7,7) = 8 inconsistent with (2,7) = 8, (7,7) now [5] 59. (7,8) = 2 inconsistent with (5,8) = 2, (7,8) now [5,7,8] 60. (7,8) = 5 inconsistent with (7,7) = 5, (7,8) now [8,7] 61. (7,8) = 7 inconsistent with (1,8) = 7, (7,8) now [8] 62. (7,6) = 8 inconsistent with (7,8) = 8, (7,6) now [7] 63. (7,9) = 3 inconsistent with (7,5) = 3, (7,9) now [2] 64. (8,1) = 4 inconsistent with (3,1) = 4, (8,1) now [6] 65. (8,3) = 8 inconsistent with (3,3) = 8, (8,3) now [5,1,9] 66. (8,3) = 1 inconsistent with (5,3) = 1, (8,3) now [5,9] 67. (8,3) = 9 inconsistent with (2,3) = 9, (8,3) now [5] 68. (8,4) = 8 inconsistent with (6,4) = 8, (8,4) now [9] 69. (8,5) = 6 inconsistent with (8,1) = 6, (8,5) now [4,5] 70. (8,5) = 5 inconsistent with (8,3) = 5, (8,5) now [4] 71. (8,6) = 6 inconsistent with (8,1) = 6, (8,6) now [8,4] 72. (8,6) = 4 inconsistent with (8,5) = 4, (8,6) now [8] 73. (8,7) = 9 inconsistent with (8,4) = 9, (8,7) now [1,5,8,4] 74. (8,7) = 5 inconsistent with (8,3) = 5, (8,7) now [1,8,4] 75. (8,7) = 8 inconsistent with (8,6) = 8, (8,7) now [1,4] 76. (8,7) = 4 inconsistent with (8,5) = 4, (8,7) now [1] 77. (9,2) = 6 inconsistent with (3,2) = 6, (9,2) now [7,9] 78. (9,2) = 9 inconsistent with (5,2) = 9, (9,2) now [7] 79. (9,3) = 9 inconsistent with (2,3) = 9, (9,3) now [3] 80. (9,7) = 3 inconsistent with (9,3) = 3, (9,7) now [9] 81. (9,8) = 7 inconsistent with (9,2) = 7, (9,8) now [6]