Pasos de la solución:

1. Fila 2 / Columna 8 → 3 (Hidden Single)
2. Fila 6 / Columna 6 → 1 (Hidden Single)
3. Fila 8 / Columna 9 → 1 (Hidden Single)
4. Fila 7 / Columna 3 → 1 (Hidden Single)
5. Fila 2 / Columna 5 → 1 (Hidden Single)
6. Fila 5 / Columna 7 → 1 (Hidden Single)
7. Locked Candidates Type 1 (Pointing): 2 in b3 => r79c9<>2
8. Locked Candidates Type 1 (Pointing): 5 in b3 => r79c7<>5
9. Locked Candidates Type 1 (Pointing): 4 in b5 => r78c4<>4
10. Fila 8 / Columna 2 → 4 (Hidden Single)
11. Fila 2 / Columna 9 → 4 (Hidden Single)
12. Fila 3 / Columna 1 → 4 (Hidden Single)
13. Locked Pair: 6,9 in r79c1 => r15c1,r7c2,r9c3<>9, r5c1,r7c2<>6
14. Fila 5 / Columna 9 → 6 (Hidden Single)
15. Fila 4 / Columna 2 → 6 (Hidden Single)
16. Locked Candidates Type 1 (Pointing): 8 in b6 => r4c46<>8
17. Locked Candidates Type 1 (Pointing): 9 in b6 => r789c8<>9
18. Fila 8 / Columna 8 → 8 (Naked Single)
19. Fila 4 / Columna 7 → 8 (Hidden Single)
20. Locked Pair: 5,7 in r13c7 => r13c9,r79c7<>7
21. Locked Candidates Type 1 (Pointing): 7 in b6 => r79c8<>7
22. Locked Candidates Type 2 (Claiming): 2 in r2 => r1c45,r3c456<>2
23. Locked Candidates Type 2 (Claiming): 6 in r8 => r7c46,r9c6<>6
24. Locked Candidates Type 2 (Claiming): 9 in r8 => r7c456,r9c56<>9
25. Locked Candidates Type 2 (Claiming): 2 in c5 => r7c46,r9c6<>2
26. Naked Triple: 3,5,8 in r7c46,r9c6 => r79c5<>5, r79c5<>8
27. Hidden Triple: 3,6,7 in r13c4,r3c6 => r13c4,r3c6<>5, r13c4,r3c6<>8, r13c4,r3c6<>9
28. Locked Candidates Type 1 (Pointing): 9 in b2 => r5c5<>9
29. Naked Triple: 3,5,7 in r1c147 => r1c3<>3, r1c5<>5
30. Swordfish: 5 c157 r135 => r3c2,r5c4<>5
31. W-Wing: 9/8 in r1c5,r3c2 connected by 8 in r13c9 => r1c3,r3c5<>9
32. Fila 1 / Columna 5 → 9 (Hidden Single)
33. W-Wing: 5/8 in r2c2,r9c6 connected by 8 in r7c2,r9c3 => r2c6<>5
34. Locked Candidates Type 2 (Claiming): 5 in c6 => r7c4<>5
35. Hidden Triple: 2,4,5 in r246c4 => r2c4<>8, r46c4<>9
36. Skyscraper: 8 in r2c2,r9c3 (connected by r29c6) => r13c3,r7c2<>8
37. Fila 1 / Columna 3 → 2 (Naked Single)
38. Fila 7 / Columna 2 → 7 (Naked Single)
39. Fila 1 / Columna 9 → 8 (Naked Single)
40. Fila 7 / Columna 9 → 9 (Naked Single)
41. Fila 9 / Columna 3 → 8 (Naked Single)
42. Fila 3 / Columna 9 → 2 (Naked Single)
43. Fila 9 / Columna 9 → 7 (Full House)
44. Fila 7 / Columna 1 → 6 (Naked Single)
45. Fila 9 / Columna 1 → 9 (Full House)
46. Fila 9 / Columna 6 → 5 (Naked Single)
47. Fila 7 / Columna 7 → 4 (Naked Single)
48. Fila 9 / Columna 8 → 2 (Naked Single)
49. Fila 7 / Columna 5 → 2 (Naked Single)
50. Fila 9 / Columna 7 → 6 (Naked Single)
51. Fila 7 / Columna 8 → 5 (Full House)
52. Fila 9 / Columna 5 → 4 (Full House)
53. Naked Pair: 3,9 in r35c3 => r46c3<>9
54. Bivalue Universal Grave + 1 => r3c4<>6, r3c4<>7
55. Fila 3 / Columna 4 → 3 (Naked Single)
56. Fila 1 / Columna 4 → 7 (Naked Single)
57. Fila 3 / Columna 3 → 9 (Naked Single)
58. Fila 3 / Columna 6 → 6 (Naked Single)
59. Fila 7 / Columna 4 → 8 (Naked Single)
60. Fila 7 / Columna 6 → 3 (Full House)
61. Fila 1 / Columna 7 → 5 (Naked Single)
62. Fila 1 / Columna 1 → 3 (Full House)
63. Fila 3 / Columna 7 → 7 (Full House)
64. Fila 5 / Columna 1 → 5 (Full House)
65. Fila 3 / Columna 2 → 8 (Naked Single)
66. Fila 2 / Columna 2 → 5 (Full House)
67. Fila 6 / Columna 2 → 9 (Full House)
68. Fila 3 / Columna 5 → 5 (Full House)
69. Fila 5 / Columna 5 → 8 (Full House)
70. Fila 5 / Columna 3 → 3 (Naked Single)
71. Fila 5 / Columna 4 → 9 (Full House)
72. Fila 8 / Columna 6 → 9 (Naked Single)
73. Fila 8 / Columna 4 → 6 (Full House)
74. Fila 2 / Columna 4 → 2 (Naked Single)
75. Fila 2 / Columna 6 → 8 (Full House)
76. Fila 4 / Columna 6 → 2 (Full House)
77. Fila 6 / Columna 8 → 7 (Naked Single)
78. Fila 4 / Columna 8 → 9 (Full House)
79. Fila 4 / Columna 4 → 4 (Naked Single)
80. Fila 4 / Columna 3 → 7 (Full House)
81. Fila 6 / Columna 3 → 4 (Full House)
82. Fila 6 / Columna 4 → 5 (Full House)