Pasos de la solución:

1. Fila 3 / Columna 2 → 9 (Hidden Single)
2. Fila 8 / Columna 5 → 6 (Hidden Single)
3. Fila 5 / Columna 1 → 9 (Hidden Single)
4. Fila 7 / Columna 5 → 9 (Hidden Single)
5. Fila 8 / Columna 3 → 9 (Hidden Single)
6. Fila 3 / Columna 5 → 1 (Hidden Single)
7. Fila 7 / Columna 4 → 1 (Hidden Single)
8. Locked Candidates Type 1 (Pointing): 5 in b1 => r2c4789<>5
9. Locked Candidates Type 1 (Pointing): 3 in b7 => r45c2<>3
10. Locked Candidates Type 2 (Claiming): 8 in r8 => r7c789,r9c8<>8
11. 2-String Kite: 6 in r2c3,r5c8 (connected by r4c3,r5c2) => r2c8<>6
12. Discontinuous Nice Loop: 2/5/8 r3c6 =6= r3c8 -6- r5c8 =6= r5c2 =7= r6c1 -7- r8c1 -5- r2c1 -2- r1c2 -6- r1c6 =6= r3c6 => r3c6<>2, r3c6<>5, r3c6<>8
13. Fila 3 / Columna 6 → 6 (Naked Single)
14. Locked Candidates Type 2 (Claiming): 2 in r3 => r1c78,r2c789<>2
15. Finned Jellyfish: 2 r1359 c2689 fr9c3 => r7c2<>2
16. Discontinuous Nice Loop: 2/3/8 r5c8 =6= r5c2 =7= r6c1 -7- r8c1 -5- r2c1 -2- r1c2 -6- r1c8 =6= r5c8 => r5c8<>2, r5c8<>3, r5c8<>8
17. Fila 5 / Columna 8 → 6 (Naked Single)
18. Locked Candidates Type 1 (Pointing): 3 in b6 => r7c9<>3
19. AIC: 2/4 2- r2c5 =2= r1c6 -2- r1c2 -6- r4c2 =6= r4c3 =4= r4c5 -4 => r4c5<>2, r2c5<>4
20. Finned X-Wing: 2 c15 r26 fr4c1 => r6c3<>2
21. W-Wing: 8/4 in r6c3,r9c5 connected by 4 in r4c35 => r6c5,r9c3<>8
22. Discontinuous Nice Loop: 8 r2c5 -8- r9c5 -4- r4c5 =4= r4c3 =6= r4c2 -6- r1c2 -2- r1c6 =2= r2c5 => r2c5<>8
23. Locked Candidates Type 1 (Pointing): 8 in b2 => r59c4<>8
24. Discontinuous Nice Loop: 2/4/8 r4c3 =6= r4c2 -6- r1c2 -2- r1c6 =2= r2c5 =3= r2c4 -3- r5c4 -7- r5c2 =7= r6c1 -7- r8c1 -5- r2c1 =5= r2c3 =6= r4c3 => r4c3<>2, r4c3<>4, r4c3<>8
25. Fila 4 / Columna 3 → 6 (Naked Single)
26. Fila 4 / Columna 5 → 4 (Hidden Single)
27. Fila 9 / Columna 5 → 8 (Naked Single)
28. Fila 6 / Columna 3 → 4 (Hidden Single)
29. Fila 2 / Columna 7 → 6 (Hidden Single)
30. Fila 1 / Columna 2 → 6 (Hidden Single)
31. Fila 7 / Columna 3 → 8 (Hidden Single)
32. Fila 2 / Columna 9 → 7 (Hidden Single)
33. Fila 1 / Columna 6 → 2 (Hidden Single)
34. Fila 2 / Columna 5 → 3 (Naked Single)
35. Fila 6 / Columna 5 → 2 (Full House)
36. Fila 7 / Columna 9 → 4 (Hidden Single)
37. Fila 5 / Columna 4 → 3 (Hidden Single)
38. Fila 9 / Columna 6 → 4 (Hidden Single)
39. Fila 9 / Columna 4 → 7 (Hidden Single)
40. Fila 7 / Columna 6 → 5 (Full House)
41. Locked Candidates Type 1 (Pointing): 2 in b7 => r9c8<>2
42. Uniqueness Test 6: 2/3 in r7c28,r9c28 => r7c2,r9c8<>3
43. Fila 7 / Columna 2 → 7 (Naked Single)
44. Fila 9 / Columna 8 → 5 (Naked Single)
45. Fila 7 / Columna 7 → 2 (Naked Single)
46. Fila 7 / Columna 8 → 3 (Full House)
47. Fila 8 / Columna 1 → 5 (Naked Single)
48. Fila 9 / Columna 3 → 2 (Naked Single)
49. Fila 2 / Columna 3 → 5 (Full House)
50. Fila 2 / Columna 1 → 2 (Full House)
51. Fila 9 / Columna 2 → 3 (Full House)
52. Fila 4 / Columna 1 → 3 (Naked Single)
53. Fila 6 / Columna 1 → 7 (Full House)
54. Fila 6 / Columna 6 → 8 (Naked Single)
55. Fila 5 / Columna 6 → 7 (Full House)
56. Fila 6 / Columna 7 → 1 (Naked Single)
57. Fila 6 / Columna 9 → 3 (Full House)
58. Fila 1 / Columna 7 → 5 (Naked Single)
59. Fila 1 / Columna 4 → 4 (Naked Single)
60. Fila 1 / Columna 8 → 1 (Full House)
61. Fila 4 / Columna 7 → 8 (Naked Single)
62. Fila 8 / Columna 7 → 7 (Full House)
63. Fila 2 / Columna 4 → 8 (Naked Single)
64. Fila 2 / Columna 8 → 4 (Full House)
65. Fila 3 / Columna 4 → 5 (Full House)
66. Fila 8 / Columna 8 → 8 (Naked Single)
67. Fila 3 / Columna 8 → 2 (Full House)
68. Fila 8 / Columna 9 → 1 (Full House)
69. Fila 3 / Columna 9 → 8 (Full House)
70. Fila 4 / Columna 2 → 2 (Naked Single)
71. Fila 4 / Columna 9 → 5 (Full House)
72. Fila 5 / Columna 9 → 2 (Full House)
73. Fila 5 / Columna 2 → 8 (Full House)