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

This Sudoku Puzzle has 54 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 2 (Claiming), Uniqueness Test 1 techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 5 → 7 (Naked Single)
2. Row 7 / Column 4 → 8 (Naked Single)
3. Row 7 / Column 6 → 6 (Naked Single)
4. Row 7 / Column 3 → 1 (Naked Single)
5. Row 7 / Column 2 → 3 (Naked Single)
6. Row 7 / Column 8 → 4 (Full House)
7. Row 3 / Column 6 → 8 (Hidden Single)
8. Row 4 / Column 8 → 9 (Hidden Single)
9. Row 3 / Column 8 → 3 (Hidden Single)
10. Row 8 / Column 4 → 9 (Hidden Single)
11. Row 8 / Column 6 → 5 (Naked Single)
12. Row 9 / Column 5 → 2 (Full House)
13. Row 8 / Column 1 → 7 (Naked Single)
14. Row 4 / Column 1 → 1 (Naked Single)
15. Row 8 / Column 3 → 6 (Naked Single)
16. Row 8 / Column 7 → 8 (Full House)
17. Row 9 / Column 3 → 5 (Full House)
18. Row 4 / Column 4 → 7 (Naked Single)
19. Row 6 / Column 1 → 5 (Naked Single)
20. Row 2 / Column 1 → 3 (Full House)
21. Row 5 / Column 3 → 8 (Hidden Single)
22. Row 6 / Column 5 → 3 (Hidden Single)
23. Row 3 / Column 3 → 9 (Hidden Single)
24. Row 1 / Column 6 → 9 (Hidden Single)
25. Row 1 / Column 8 → 5 (Hidden Single)
26. Row 1 / Column 5 → 4 (Naked Single)
27. Row 3 / Column 5 → 5 (Full House)
28. Row 2 / Column 4 → 1 (Naked Single)
29. Row 2 / Column 6 → 7 (Full House)
30. Row 5 / Column 4 → 5 (Full House)
31. Row 2 / Column 7 → 2 (Naked Single)
32. Row 2 / Column 2 → 5 (Full House)
33. Locked Candidates Type 2 (Claiming): 1 in c8 => r5c9,r6c7<>1
34. Locked Candidates Type 2 (Claiming): 7 in c8 => r5c9,r6c7<>7
35. Row 6 / Column 7 → 4 (Naked Single)
36. Row 3 / Column 9 → 4 (Hidden Single)
37. Row 4 / Column 6 → 4 (Hidden Single)
38. Uniqueness Test 1: 2/6 in r4c29,r5c29 => r5c2<>2, r5c2<>6
39. Row 5 / Column 2 → 7 (Naked Single)
40. Row 3 / Column 2 → 1 (Naked Single)
41. Row 3 / Column 7 → 7 (Full House)
42. Row 1 / Column 9 → 1 (Full House)
43. Row 9 / Column 7 → 1 (Full House)
44. Row 9 / Column 9 → 7 (Full House)
45. Row 5 / Column 8 → 1 (Naked Single)
46. Row 6 / Column 8 → 7 (Full House)
47. Row 6 / Column 3 → 2 (Naked Single)
48. Row 1 / Column 3 → 7 (Full House)
49. Row 1 / Column 2 → 2 (Full House)
50. Row 4 / Column 2 → 6 (Full House)
51. Row 6 / Column 6 → 1 (Full House)
52. Row 5 / Column 6 → 2 (Full House)
53. Row 4 / Column 9 → 2 (Full House)
54. Row 5 / Column 9 → 6 (Full House)
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