2
3
5
8
4
5
9
3
9
8
6
2
8
1
9
6
5
2
8
4
3
4
1

This Sudoku Puzzle has 67 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, undefined, Turbot Fish techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 1 → 8 (Hidden Single)
2. Row 9 / Column 7 → 8 (Hidden Single)
3. Row 7 / Column 2 → 4 (Hidden Single)
4. Row 1 / Column 9 → 4 (Hidden Single)
5. Row 3 / Column 1 → 4 (Hidden Single)
6. Row 1 / Column 8 → 5 (Hidden Single)
7. Row 2 / Column 9 → 8 (Hidden Single)
8. Row 2 / Column 1 → 9 (Hidden Single)
9. Row 3 / Column 8 → 1 (Hidden Single)
10. Row 3 / Column 2 → 7 (Naked Single)
11. Row 1 / Column 2 → 1 (Naked Single)
12. Row 2 / Column 3 → 6 (Full House)
13. Row 1 / Column 4 → 7 (Naked Single)
14. Row 2 / Column 5 → 1 (Naked Single)
15. Row 2 / Column 4 → 2 (Naked Single)
16. Row 2 / Column 7 → 7 (Full House)
17. Row 1 / Column 5 → 6 (Hidden Single)
18. Row 1 / Column 6 → 8 (Full House)
19. Row 5 / Column 5 → 8 (Hidden Single)
20. Locked Candidates Type 1 (Pointing): 1 in b5 => r4c13<>1
21. Locked Candidates Type 1 (Pointing): 1 in b7 => r8c6<>1
22. Naked Pair: 3,9 in r39c4 => r45c4<>3, r5c4<>9
23. Naked Triple: 2,5,6 in r378c7 => r4c7<>2, r46c7<>5, r4c7<>6
24. Locked Candidates Type 1 (Pointing): 5 in b6 => r8c9<>5
25. X-Wing: 2 c28 r59 => r5c39,r9c3<>2
26. Row 9 / Column 3 → 7 (Naked Single)
27. Naked Pair: 4,5 in r5c34 => r5c69<>5
28. Naked Triple: 3,7,9 in r46c5,r5c6 => r4c6<>3, r4c6<>7
29. Turbot Fish: 9 r6c5 =9= r8c5 -9- r8c9 =9= r9c8 => r6c8<>9
30. Row 6 / Column 8 → 7 (Naked Single)
31. Row 7 / Column 8 → 6 (Naked Single)
32. Row 7 / Column 7 → 5 (Naked Single)
33. Row 7 / Column 4 → 1 (Naked Single)
34. Row 7 / Column 6 → 7 (Full House)
35. Row 8 / Column 7 → 2 (Naked Single)
36. Row 3 / Column 7 → 6 (Naked Single)
37. Row 3 / Column 9 → 2 (Full House)
38. Row 8 / Column 3 → 1 (Naked Single)
39. Row 9 / Column 8 → 9 (Naked Single)
40. Row 5 / Column 8 → 2 (Full House)
41. Row 8 / Column 9 → 7 (Full House)
42. Row 8 / Column 1 → 3 (Naked Single)
43. Row 9 / Column 2 → 2 (Full House)
44. Row 5 / Column 2 → 3 (Full House)
45. Row 9 / Column 4 → 3 (Naked Single)
46. Row 9 / Column 6 → 6 (Full House)
47. Row 6 / Column 1 → 1 (Naked Single)
48. Row 8 / Column 5 → 9 (Naked Single)
49. Row 8 / Column 6 → 5 (Full House)
50. Row 5 / Column 6 → 9 (Naked Single)
51. Row 3 / Column 4 → 9 (Naked Single)
52. Row 3 / Column 6 → 3 (Full House)
53. Row 4 / Column 6 → 1 (Full House)
54. Row 6 / Column 5 → 3 (Naked Single)
55. Row 4 / Column 5 → 7 (Full House)
56. Row 5 / Column 9 → 6 (Naked Single)
57. Row 6 / Column 7 → 4 (Naked Single)
58. Row 4 / Column 7 → 3 (Full House)
59. Row 4 / Column 1 → 6 (Naked Single)
60. Row 5 / Column 1 → 7 (Full House)
61. Row 4 / Column 9 → 5 (Naked Single)
62. Row 6 / Column 9 → 9 (Full House)
63. Row 6 / Column 3 → 5 (Full House)
64. Row 4 / Column 4 → 4 (Naked Single)
65. Row 4 / Column 3 → 2 (Full House)
66. Row 5 / Column 3 → 4 (Full House)
67. Row 5 / Column 4 → 5 (Full House)