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

This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Skyscraper techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 9 / Column 7 → 6 (Hidden Single)
2. Row 7 / Column 4 → 3 (Hidden Single)
3. Row 2 / Column 5 → 3 (Hidden Single)
4. Row 8 / Column 3 → 3 (Hidden Single)
5. Row 2 / Column 4 → 1 (Hidden Single)
6. Row 2 / Column 3 → 6 (Hidden Single)
7. Row 1 / Column 6 → 6 (Hidden Single)
8. Row 5 / Column 2 → 6 (Hidden Single)
9. Row 4 / Column 5 → 6 (Hidden Single)
10. Row 3 / Column 6 → 4 (Hidden Single)
11. Row 3 / Column 2 → 8 (Naked Single)
12. Row 3 / Column 4 → 2 (Naked Single)
13. Row 1 / Column 4 → 8 (Full House)
14. Row 1 / Column 8 → 2 (Hidden Single)
15. Row 1 / Column 1 → 3 (Hidden Single)
16. Row 3 / Column 1 → 9 (Naked Single)
17. Row 3 / Column 7 → 7 (Naked Single)
18. Row 3 / Column 8 → 3 (Full House)
19. Locked Candidates Type 1 (Pointing): 7 in b4 => r8c1<>7
20. Locked Candidates Type 1 (Pointing): 1 in b9 => r45c8<>1
21. Locked Candidates Type 2 (Claiming): 2 in r5 => r4c6,r6c5<>2
22. Skyscraper: 4 in r1c9,r9c8 (connected by r19c2) => r2c8,r8c9<>4
23. Row 9 / Column 8 → 4 (Hidden Single)
24. Row 8 / Column 1 → 4 (Hidden Single)
25. Row 2 / Column 1 → 5 (Naked Single)
26. Row 1 / Column 2 → 4 (Full House)
27. Row 1 / Column 9 → 5 (Full House)
28. Row 2 / Column 8 → 8 (Naked Single)
29. Row 7 / Column 8 → 1 (Hidden Single)
30. Row 9 / Column 3 → 8 (Hidden Single)
31. Row 7 / Column 2 → 7 (Hidden Single)
32. Row 9 / Column 2 → 5 (Full House)
33. Row 9 / Column 4 → 9 (Naked Single)
34. Row 5 / Column 4 → 5 (Full House)
35. Row 9 / Column 6 → 1 (Naked Single)
36. Row 9 / Column 5 → 7 (Full House)
37. Row 5 / Column 8 → 7 (Naked Single)
38. Row 4 / Column 8 → 5 (Full House)
39. Row 4 / Column 3 → 2 (Naked Single)
40. Row 6 / Column 3 → 5 (Full House)
41. Row 8 / Column 9 → 7 (Hidden Single)
42. Row 4 / Column 1 → 7 (Hidden Single)
43. Row 6 / Column 7 → 2 (Hidden Single)
44. Row 4 / Column 9 → 1 (Hidden Single)
45. Row 6 / Column 9 → 4 (Hidden Single)
46. Row 2 / Column 9 → 9 (Naked Single)
47. Row 2 / Column 7 → 4 (Full House)
48. Row 5 / Column 9 → 8 (Full House)
49. Row 4 / Column 7 → 9 (Full House)
50. Row 4 / Column 6 → 8 (Full House)
51. Row 5 / Column 1 → 1 (Naked Single)
52. Row 6 / Column 1 → 8 (Full House)
53. Row 6 / Column 5 → 1 (Full House)
54. Row 7 / Column 6 → 5 (Naked Single)
55. Row 7 / Column 7 → 8 (Full House)
56. Row 8 / Column 7 → 5 (Full House)
57. Row 5 / Column 5 → 2 (Naked Single)
58. Row 5 / Column 6 → 9 (Full House)
59. Row 8 / Column 6 → 2 (Full House)
60. Row 8 / Column 5 → 8 (Full House)