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

This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Locked Candidates Type 2 (Claiming), Naked Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 5 → 1 (Hidden Single)
2. Row 3 / Column 1 → 7 (Hidden Single)
3. Row 1 / Column 2 → 5 (Hidden Single)
4. Row 7 / Column 9 → 5 (Hidden Single)
5. Row 8 / Column 3 → 7 (Hidden Single)
6. Row 5 / Column 5 → 5 (Hidden Single)
7. Row 3 / Column 4 → 5 (Hidden Single)
8. Row 8 / Column 9 → 6 (Hidden Single)
9. Row 3 / Column 9 → 9 (Hidden Single)
10. Row 5 / Column 8 → 7 (Hidden Single)
11. Row 6 / Column 5 → 7 (Hidden Single)
12. Row 6 / Column 9 → 2 (Hidden Single)
13. Row 1 / Column 7 → 7 (Hidden Single)
14. Row 5 / Column 2 → 1 (Hidden Single)
15. Row 4 / Column 8 → 1 (Hidden Single)
16. Row 9 / Column 3 → 1 (Hidden Single)
17. Row 7 / Column 7 → 1 (Hidden Single)
18. Row 4 / Column 1 → 3 (Hidden Single)
19. Row 8 / Column 8 → 3 (Hidden Single)
20. Row 6 / Column 7 → 3 (Hidden Single)
21. Row 2 / Column 2 → 3 (Hidden Single)
22. Row 5 / Column 4 → 3 (Hidden Single)
23. Row 9 / Column 4 → 6 (Hidden Single)
24. Row 7 / Column 2 → 6 (Hidden Single)
25. Row 9 / Column 8 → 9 (Hidden Single)
26. Locked Candidates Type 2 (Claiming): 4 in r6 => r4c3,r5c1<>4
27. Row 5 / Column 1 → 6 (Naked Single)
28. Row 2 / Column 3 → 6 (Hidden Single)
29. Row 4 / Column 6 → 6 (Hidden Single)
30. Row 3 / Column 3 → 4 (Hidden Single)
31. Row 2 / Column 7 → 4 (Hidden Single)
32. Row 9 / Column 7 → 2 (Naked Single)
33. Row 8 / Column 7 → 8 (Full House)
34. Row 9 / Column 2 → 4 (Full House)
35. Row 7 / Column 8 → 4 (Full House)
36. Row 7 / Column 1 → 2 (Full House)
37. Row 6 / Column 2 → 8 (Naked Single)
38. Row 3 / Column 2 → 2 (Full House)
39. Row 3 / Column 8 → 8 (Full House)
40. Row 1 / Column 8 → 2 (Full House)
41. Row 2 / Column 1 → 9 (Naked Single)
42. Row 1 / Column 3 → 8 (Full House)
43. Row 4 / Column 3 → 9 (Full House)
44. Row 6 / Column 1 → 4 (Full House)
45. Row 6 / Column 4 → 9 (Full House)
46. Row 2 / Column 4 → 8 (Full House)
47. Row 1 / Column 6 → 9 (Full House)
48. Row 2 / Column 5 → 2 (Full House)
49. Row 7 / Column 6 → 8 (Naked Single)
50. Row 7 / Column 5 → 9 (Full House)
51. Row 8 / Column 5 → 4 (Naked Single)
52. Row 4 / Column 5 → 8 (Full House)
53. Row 5 / Column 6 → 4 (Full House)
54. Row 8 / Column 6 → 2 (Full House)
55. Row 4 / Column 9 → 4 (Full House)
56. Row 5 / Column 9 → 8 (Full House)