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This Sudoku Puzzle has 70 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Single, Locked Pair, Full House, Naked Pair, Remote Pair techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 3 → 4 (Hidden Single)
2. Row 7 / Column 9 → 5 (Hidden Single)
3. Row 8 / Column 5 → 4 (Hidden Single)
4. Row 9 / Column 8 → 8 (Hidden Single)
5. Row 6 / Column 7 → 3 (Hidden Single)
6. Row 9 / Column 4 → 6 (Hidden Single)
7. Row 1 / Column 9 → 4 (Hidden Single)
8. Row 4 / Column 5 → 6 (Hidden Single)
9. Row 9 / Column 2 → 4 (Hidden Single)
10. Row 7 / Column 8 → 4 (Hidden Single)
11. Row 4 / Column 4 → 8 (Hidden Single)
12. Locked Candidates Type 1 (Pointing): 5 in b5 => r5c3<>5
13. Locked Candidates Type 1 (Pointing): 9 in b6 => r4c1<>9
14. Locked Candidates Type 1 (Pointing): 9 in b8 => r13c6<>9
15. Locked Candidates Type 2 (Claiming): 3 in r2 => r1c3<>3
16. Locked Candidates Type 2 (Claiming): 9 in c1 => r78c2,r89c3<>9
17. Row 9 / Column 3 → 1 (Naked Single)
18. Locked Pair: 2,7 in r78c2 => r56c2,r8c3<>2, r56c2,r89c1<>7
19. Row 9 / Column 1 → 9 (Naked Single)
20. Row 9 / Column 6 → 7 (Full House)
21. Row 7 / Column 6 → 9 (Hidden Single)
22. Locked Candidates Type 1 (Pointing): 1 in b8 => r135c4<>1
23. Locked Candidates Type 1 (Pointing): 2 in b8 => r35c4<>2
24. Row 3 / Column 4 → 3 (Naked Single)
25. Row 1 / Column 8 → 3 (Hidden Single)
26. Row 5 / Column 6 → 3 (Hidden Single)
27. Row 5 / Column 4 → 5 (Hidden Single)
28. Row 1 / Column 4 → 7 (Naked Single)
29. Row 1 / Column 6 → 5 (Hidden Single)
30. Naked Pair: 1,7 in r7c7,r8c8 => r8c79<>1, r8c79<>7
31. Naked Pair: 1,2 in r3c68 => r3c259<>1, r3c59<>2
32. Row 3 / Column 9 → 6 (Naked Single)
33. Row 8 / Column 9 → 9 (Naked Single)
34. Row 8 / Column 7 → 6 (Naked Single)
35. Row 1 / Column 2 → 6 (Hidden Single)
36. Row 4 / Column 7 → 9 (Hidden Single)
37. Row 2 / Column 1 → 1 (Hidden Single)
38. Row 4 / Column 1 → 7 (Naked Single)
39. Row 6 / Column 1 → 5 (Naked Single)
40. Row 8 / Column 1 → 3 (Full House)
41. Row 8 / Column 3 → 5 (Naked Single)
42. Row 2 / Column 3 → 3 (Hidden Single)
43. Locked Candidates Type 2 (Claiming): 1 in c9 => r5c8<>1
44. Remote Pair: 2/1 r3c8 -1- r3c6 -2- r4c6 -1- r4c9 => r2c9,r5c8<>2
45. Row 2 / Column 9 → 7 (Naked Single)
46. Row 5 / Column 8 → 7 (Naked Single)
47. Row 2 / Column 7 → 8 (Naked Single)
48. Row 2 / Column 5 → 2 (Full House)
49. Row 8 / Column 8 → 1 (Naked Single)
50. Row 3 / Column 8 → 2 (Full House)
51. Row 1 / Column 7 → 1 (Full House)
52. Row 7 / Column 7 → 7 (Full House)
53. Row 3 / Column 6 → 1 (Naked Single)
54. Row 4 / Column 6 → 2 (Full House)
55. Row 4 / Column 9 → 1 (Full House)
56. Row 6 / Column 9 → 2 (Full House)
57. Row 5 / Column 5 → 1 (Naked Single)
58. Row 6 / Column 5 → 7 (Full House)
59. Row 8 / Column 4 → 2 (Naked Single)
60. Row 7 / Column 4 → 1 (Full House)
61. Row 7 / Column 2 → 2 (Full House)
62. Row 8 / Column 2 → 7 (Full House)
63. Row 6 / Column 3 → 8 (Naked Single)
64. Row 6 / Column 2 → 1 (Full House)
65. Row 5 / Column 2 → 9 (Naked Single)
66. Row 3 / Column 2 → 8 (Full House)
67. Row 1 / Column 3 → 9 (Full House)
68. Row 5 / Column 3 → 2 (Full House)
69. Row 3 / Column 5 → 9 (Full House)
70. Row 1 / Column 5 → 8 (Full House)