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

This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Locked Triple, Naked Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 4 → 7 (Hidden Single)
2. Row 5 / Column 2 → 6 (Hidden Single)
3. Row 1 / Column 4 → 4 (Hidden Single)
4. Row 3 / Column 9 → 1 (Hidden Single)
5. Row 2 / Column 2 → 8 (Hidden Single)
6. Row 7 / Column 6 → 7 (Hidden Single)
7. Row 2 / Column 9 → 3 (Hidden Single)
8. Row 5 / Column 4 → 5 (Hidden Single)
9. Row 7 / Column 3 → 5 (Hidden Single)
10. Row 8 / Column 8 → 5 (Hidden Single)
11. Row 9 / Column 8 → 7 (Hidden Single)
12. Row 9 / Column 5 → 6 (Hidden Single)
13. Row 9 / Column 3 → 1 (Hidden Single)
14. Row 7 / Column 5 → 1 (Hidden Single)
15. Locked Triple: 4,5,9 in r456c7 => r1237c7,r45c8<>9
16. Row 2 / Column 4 → 9 (Hidden Single)
17. Row 9 / Column 4 → 2 (Naked Single)
18. Row 9 / Column 2 → 9 (Full House)
19. Row 5 / Column 6 → 9 (Hidden Single)
20. Row 4 / Column 5 → 4 (Naked Single)
21. Row 5 / Column 7 → 4 (Naked Single)
22. Row 4 / Column 2 → 3 (Naked Single)
23. Row 6 / Column 5 → 2 (Naked Single)
24. Row 5 / Column 5 → 8 (Full House)
25. Row 8 / Column 5 → 9 (Full House)
26. Row 6 / Column 7 → 5 (Naked Single)
27. Row 4 / Column 8 → 1 (Naked Single)
28. Row 5 / Column 3 → 2 (Naked Single)
29. Row 8 / Column 9 → 8 (Naked Single)
30. Row 7 / Column 9 → 9 (Full House)
31. Row 4 / Column 7 → 9 (Naked Single)
32. Row 4 / Column 1 → 5 (Full House)
33. Row 5 / Column 8 → 3 (Full House)
34. Row 5 / Column 1 → 1 (Full House)
35. Row 1 / Column 3 → 3 (Naked Single)
36. Row 2 / Column 3 → 7 (Naked Single)
37. Row 2 / Column 7 → 2 (Full House)
38. Row 3 / Column 3 → 4 (Full House)
39. Row 8 / Column 4 → 3 (Naked Single)
40. Row 7 / Column 4 → 8 (Full House)
41. Row 3 / Column 8 → 9 (Naked Single)
42. Row 7 / Column 7 → 6 (Naked Single)
43. Row 7 / Column 8 → 2 (Full House)
44. Row 1 / Column 8 → 6 (Full House)
45. Row 3 / Column 1 → 2 (Naked Single)
46. Row 1 / Column 1 → 9 (Full House)
47. Row 1 / Column 7 → 8 (Naked Single)
48. Row 1 / Column 6 → 2 (Full House)
49. Row 3 / Column 6 → 8 (Full House)
50. Row 3 / Column 7 → 7 (Full House)
51. Row 7 / Column 2 → 4 (Naked Single)
52. Row 7 / Column 1 → 3 (Full House)
53. Row 8 / Column 1 → 7 (Naked Single)
54. Row 6 / Column 1 → 4 (Full House)
55. Row 6 / Column 2 → 7 (Full House)
56. Row 8 / Column 2 → 2 (Full House)