1
2
4
5
2
3
7
1
6
1
4
5
3
6
2
5
5
6
8
6
4
3
2
9

This Sudoku Puzzle has 58 steps and it is solved using Naked Triple, Naked Single, Hidden Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Naked Triple: 7,8,9 in r1c346 => r1c15<>7, r1c1579<>8, r1c1579<>9
2. Row 1 / Column 1 → 5 (Naked Single)
3. Row 9 / Column 9 → 5 (Hidden Single)
4. Row 2 / Column 8 → 5 (Hidden Single)
5. Row 5 / Column 2 → 5 (Hidden Single)
6. Row 8 / Column 5 → 5 (Hidden Single)
7. Row 9 / Column 7 → 6 (Hidden Single)
8. Row 1 / Column 7 → 4 (Naked Single)
9. Row 1 / Column 5 → 6 (Naked Single)
10. Row 1 / Column 9 → 6 (Naked Single)
11. Row 3 / Column 8 → 8 (Naked Single)
12. Row 2 / Column 7 → 9 (Naked Single)
13. Row 3 / Column 9 → 9 (Naked Single)
14. Row 9 / Column 1 → 4 (Hidden Single)
15. Row 2 / Column 5 → 4 (Hidden Single)
16. Row 8 / Column 8 → 4 (Hidden Single)
17. Row 6 / Column 8 → 7 (Naked Single)
18. Row 4 / Column 8 → 1 (Naked Single)
19. Row 5 / Column 7 → 8 (Naked Single)
20. Row 8 / Column 7 → 7 (Full House)
21. Row 7 / Column 8 → 1 (Naked Single)
22. Row 5 / Column 8 → 6 (Naked Single)
23. Row 4 / Column 9 → 3 (Naked Single)
24. Row 6 / Column 9 → 4 (Full House)
25. Row 5 / Column 9 → 4 (Full House)
26. Row 7 / Column 9 → 8 (Naked Single)
27. Row 2 / Column 2 → 6 (Hidden Single)
28. Row 1 / Column 3 → 9 (Hidden Single)
29. Row 8 / Column 3 → 3 (Naked Single)
30. Row 2 / Column 3 → 8 (Naked Single)
31. Row 8 / Column 2 → 9 (Naked Single)
32. Row 2 / Column 4 → 1 (Naked Single)
33. Row 2 / Column 6 → 3 (Full House)
34. Row 4 / Column 2 → 7 (Naked Single)
35. Row 6 / Column 2 → 2 (Naked Single)
36. Row 7 / Column 1 → 7 (Naked Single)
37. Row 3 / Column 2 → 3 (Full House)
38. Row 5 / Column 3 → 2 (Full House)
39. Row 7 / Column 2 → 2 (Full House)
40. Row 3 / Column 1 → 3 (Full House)
41. Row 9 / Column 3 → 2 (Full House)
42. Row 8 / Column 4 → 8 (Naked Single)
43. Row 8 / Column 6 → 1 (Full House)
44. Row 3 / Column 5 → 7 (Naked Single)
45. Row 7 / Column 5 → 9 (Naked Single)
46. Row 5 / Column 1 → 9 (Naked Single)
47. Row 9 / Column 4 → 7 (Full House)
48. Row 1 / Column 4 → 7 (Full House)
49. Row 4 / Column 5 → 8 (Full House)
50. Row 6 / Column 5 → 8 (Full House)
51. Row 4 / Column 1 → 8 (Full House)
52. Row 5 / Column 4 → 7 (Full House)
53. Row 6 / Column 1 → 8 (Full House)
54. Row 9 / Column 6 → 7 (Naked Single)
55. Row 1 / Column 6 → 8 (Naked Single)
56. Row 5 / Column 6 → 7 (Full House)
57. Row 9 / Column 5 → 3 (Naked Single)
58. Row 5 / Column 5 → 1 (Naked Single)