8
2
4
7
4
3
3
9
5
9
8
3
8
5
6
2
7
5
4
2
7
6

This Sudoku Puzzle has 68 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Triple, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Uniqueness Test 2, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 8 → 8 (Hidden Single)
2. Row 4 / Column 5 → 7 (Hidden Single)
3. Row 2 / Column 2 → 5 (Hidden Single)
4. Row 2 / Column 1 → 3 (Hidden Single)
5. Row 4 / Column 2 → 3 (Hidden Single)
6. Row 2 / Column 9 → 7 (Hidden Single)
7. Row 2 / Column 4 → 8 (Hidden Single)
8. Locked Pair: 1,9 in r8c46 => r789c5,r8c278,r9c46<>1, r789c5,r8c8,r9c46<>9
9. Row 8 / Column 8 → 2 (Naked Single)
10. Row 8 / Column 2 → 7 (Naked Single)
11. Row 6 / Column 1 → 7 (Hidden Single)
12. Row 9 / Column 7 → 7 (Hidden Single)
13. Row 3 / Column 3 → 7 (Hidden Single)
14. Locked Triple: 3,6,8 in r789c5 => r135c5,r9c46<>6
15. Locked Candidates Type 1 (Pointing): 6 in b5 => r6c2<>6
16. Locked Candidates Type 1 (Pointing): 9 in b6 => r6c46<>9
17. Locked Candidates Type 1 (Pointing): 4 in b8 => r9c89<>4
18. Locked Candidates Type 1 (Pointing): 5 in b8 => r9c89<>5
19. Locked Candidates Type 2 (Claiming): 6 in c2 => r7c13,r9c13<>6
20. Locked Candidates Type 2 (Claiming): 9 in c5 => r1c6,r3c4<>9
21. Uniqueness Test 2: 1/9 in r4c46,r8c46 => r4c1,r6c46<>4
22. Row 4 / Column 1 → 1 (Naked Single)
23. Row 5 / Column 3 → 6 (Naked Single)
24. Row 6 / Column 2 → 2 (Naked Single)
25. Row 5 / Column 1 → 4 (Full House)
26. Row 1 / Column 3 → 1 (Hidden Single)
27. Row 5 / Column 5 → 2 (Hidden Single)
28. Row 1 / Column 5 → 9 (Naked Single)
29. Row 1 / Column 1 → 6 (Naked Single)
30. Row 3 / Column 1 → 9 (Full House)
31. Row 3 / Column 5 → 1 (Naked Single)
32. Row 7 / Column 1 → 8 (Naked Single)
33. Row 9 / Column 1 → 2 (Full House)
34. Row 2 / Column 6 → 6 (Naked Single)
35. Row 2 / Column 8 → 1 (Full House)
36. Row 3 / Column 4 → 5 (Naked Single)
37. Row 1 / Column 6 → 2 (Full House)
38. Row 6 / Column 6 → 1 (Naked Single)
39. Row 9 / Column 8 → 9 (Naked Single)
40. Row 3 / Column 8 → 6 (Naked Single)
41. Row 3 / Column 9 → 8 (Naked Single)
42. Row 3 / Column 7 → 2 (Full House)
43. Row 9 / Column 4 → 4 (Naked Single)
44. Row 6 / Column 4 → 6 (Naked Single)
45. Row 8 / Column 6 → 9 (Naked Single)
46. Row 6 / Column 8 → 4 (Naked Single)
47. Row 7 / Column 8 → 5 (Full House)
48. Row 9 / Column 3 → 3 (Naked Single)
49. Row 7 / Column 3 → 9 (Full House)
50. Row 4 / Column 4 → 9 (Naked Single)
51. Row 4 / Column 6 → 4 (Full House)
52. Row 9 / Column 6 → 5 (Full House)
53. Row 8 / Column 4 → 1 (Full House)
54. Row 6 / Column 7 → 3 (Naked Single)
55. Row 6 / Column 9 → 9 (Full House)
56. Row 9 / Column 9 → 1 (Naked Single)
57. Row 8 / Column 7 → 8 (Naked Single)
58. Row 8 / Column 5 → 3 (Full House)
59. Row 5 / Column 9 → 5 (Naked Single)
60. Row 5 / Column 7 → 1 (Full House)
61. Row 7 / Column 7 → 4 (Naked Single)
62. Row 1 / Column 7 → 5 (Full House)
63. Row 1 / Column 9 → 4 (Full House)
64. Row 7 / Column 9 → 3 (Full House)
65. Row 9 / Column 2 → 6 (Naked Single)
66. Row 7 / Column 2 → 1 (Full House)
67. Row 7 / Column 5 → 6 (Full House)
68. Row 9 / Column 5 → 8 (Full House)