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

This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Naked Single, Full House, Naked Pair, Skyscraper techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 1 → 2 (Hidden Single)
2. Row 4 / Column 7 → 7 (Hidden Single)
3. Row 4 / Column 4 → 2 (Hidden Single)
4. Row 7 / Column 4 → 9 (Naked Single)
5. Row 8 / Column 4 → 5 (Naked Single)
6. Row 2 / Column 4 → 4 (Naked Single)
7. Row 6 / Column 4 → 1 (Full House)
8. Row 7 / Column 5 → 2 (Hidden Single)
9. Row 8 / Column 7 → 2 (Hidden Single)
10. Row 5 / Column 9 → 2 (Hidden Single)
11. Row 7 / Column 3 → 7 (Hidden Single)
12. Row 8 / Column 6 → 7 (Hidden Single)
13. Row 8 / Column 8 → 6 (Hidden Single)
14. Row 9 / Column 9 → 4 (Naked Single)
15. Row 3 / Column 9 → 5 (Naked Single)
16. Row 7 / Column 9 → 3 (Naked Single)
17. Row 7 / Column 7 → 8 (Naked Single)
18. Row 7 / Column 1 → 4 (Full House)
19. Row 9 / Column 7 → 9 (Full House)
20. Row 3 / Column 7 → 4 (Naked Single)
21. Row 2 / Column 8 → 8 (Hidden Single)
22. Row 2 / Column 3 → 3 (Hidden Single)
23. Row 1 / Column 8 → 9 (Hidden Single)
24. Row 8 / Column 1 → 3 (Hidden Single)
25. Row 2 / Column 9 → 6 (Hidden Single)
26. Row 1 / Column 9 → 7 (Full House)
27. Row 1 / Column 7 → 3 (Full House)
28. Row 1 / Column 3 → 6 (Hidden Single)
29. Row 6 / Column 8 → 3 (Hidden Single)
30. Row 2 / Column 5 → 7 (Hidden Single)
31. Row 1 / Column 2 → 4 (Hidden Single)
32. Row 6 / Column 6 → 4 (Hidden Single)
33. Row 4 / Column 2 → 1 (Hidden Single)
34. Row 4 / Column 8 → 4 (Naked Single)
35. Row 5 / Column 8 → 1 (Full House)
36. Row 8 / Column 2 → 8 (Hidden Single)
37. Row 8 / Column 3 → 9 (Full House)
38. Row 5 / Column 3 → 4 (Hidden Single)
39. Naked Pair: 1,5 in r19c1 => r3c1<>1, r5c1<>5
40. Skyscraper: 5 in r2c2,r4c3 (connected by r24c6) => r6c2<>5
41. Row 6 / Column 2 → 9 (Naked Single)
42. Row 2 / Column 2 → 5 (Full House)
43. Row 2 / Column 6 → 9 (Full House)
44. Row 5 / Column 1 → 8 (Naked Single)
45. Row 4 / Column 3 → 5 (Full House)
46. Row 4 / Column 6 → 8 (Full House)
47. Row 1 / Column 1 → 1 (Naked Single)
48. Row 1 / Column 5 → 5 (Full House)
49. Row 3 / Column 5 → 1 (Full House)
50. Row 3 / Column 1 → 9 (Naked Single)
51. Row 3 / Column 3 → 8 (Full House)
52. Row 9 / Column 3 → 1 (Full House)
53. Row 9 / Column 1 → 5 (Full House)
54. Row 9 / Column 6 → 6 (Naked Single)
55. Row 5 / Column 6 → 5 (Full House)
56. Row 9 / Column 5 → 8 (Full House)
57. Row 6 / Column 5 → 6 (Naked Single)
58. Row 5 / Column 5 → 9 (Full House)
59. Row 5 / Column 7 → 6 (Full House)
60. Row 6 / Column 7 → 5 (Full House)