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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 2 (Claiming), Full House, Skyscraper techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 1 → 5 (Hidden Single)
2. Row 3 / Column 2 → 5 (Hidden Single)
3. Row 1 / Column 4 → 7 (Hidden Single)
4. Row 9 / Column 3 → 7 (Hidden Single)
5. Row 7 / Column 9 → 7 (Hidden Single)
6. Row 2 / Column 5 → 5 (Hidden Single)
7. Row 9 / Column 5 → 3 (Naked Single)
8. Row 9 / Column 4 → 2 (Naked Single)
9. Row 9 / Column 6 → 5 (Hidden Single)
10. Row 3 / Column 8 → 4 (Hidden Single)
11. Row 5 / Column 5 → 7 (Hidden Single)
12. Row 6 / Column 1 → 7 (Hidden Single)
13. Row 1 / Column 3 → 1 (Hidden Single)
14. Row 8 / Column 8 → 5 (Hidden Single)
15. Row 2 / Column 7 → 8 (Hidden Single)
16. Row 1 / Column 6 → 8 (Hidden Single)
17. Row 7 / Column 6 → 9 (Hidden Single)
18. Row 3 / Column 1 → 2 (Hidden Single)
19. Row 1 / Column 2 → 4 (Hidden Single)
20. Row 2 / Column 9 → 2 (Hidden Single)
21. Row 1 / Column 1 → 6 (Hidden Single)
22. Row 5 / Column 3 → 4 (Hidden Single)
23. Locked Candidates Type 2 (Claiming): 6 in r5 => r4c56,r6c5<>6
24. Row 4 / Column 5 → 1 (Naked Single)
25. Row 6 / Column 5 → 8 (Naked Single)
26. Row 8 / Column 5 → 4 (Naked Single)
27. Row 7 / Column 5 → 6 (Full House)
28. Row 7 / Column 4 → 8 (Full House)
29. Row 8 / Column 9 → 3 (Naked Single)
30. Row 7 / Column 1 → 3 (Naked Single)
31. Row 6 / Column 9 → 6 (Naked Single)
32. Row 4 / Column 9 → 4 (Full House)
33. Row 2 / Column 1 → 9 (Naked Single)
34. Row 2 / Column 3 → 3 (Full House)
35. Row 8 / Column 1 → 8 (Full House)
36. Row 5 / Column 8 → 8 (Hidden Single)
37. Row 7 / Column 7 → 4 (Hidden Single)
38. Row 4 / Column 3 → 6 (Hidden Single)
39. Row 6 / Column 7 → 1 (Hidden Single)
40. Skyscraper: 2 in r4c7,r6c3 (connected by r8c37) => r6c8<>2
41. Row 6 / Column 8 → 3 (Naked Single)
42. Row 4 / Column 7 → 2 (Full House)
43. Row 4 / Column 6 → 3 (Full House)
44. Row 1 / Column 8 → 9 (Naked Single)
45. Row 1 / Column 7 → 3 (Full House)
46. Row 8 / Column 7 → 9 (Full House)
47. Row 8 / Column 3 → 2 (Full House)
48. Row 6 / Column 3 → 9 (Full House)
49. Row 6 / Column 2 → 2 (Full House)
50. Row 5 / Column 2 → 3 (Full House)
51. Row 3 / Column 6 → 6 (Naked Single)
52. Row 3 / Column 4 → 3 (Full House)
53. Row 5 / Column 4 → 6 (Full House)
54. Row 5 / Column 6 → 2 (Full House)
55. Row 9 / Column 8 → 1 (Naked Single)
56. Row 7 / Column 8 → 2 (Full House)
57. Row 7 / Column 2 → 1 (Full House)
58. Row 9 / Column 2 → 9 (Full House)