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

This Sudoku Puzzle has 55 steps and it is solved using Naked Single, Hidden Single, Skyscraper, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

1. Row 8 / Column 8 → 2 (Naked Single)
2. Row 9 / Column 1 → 3 (Naked Single)
3. Row 9 / Column 4 → 7 (Naked Single)
4. Row 9 / Column 2 → 1 (Hidden Single)
5. Row 7 / Column 8 → 1 (Hidden Single)
6. Row 7 / Column 7 → 3 (Naked Single)
7. Row 9 / Column 3 → 8 (Hidden Single)
8. Row 2 / Column 8 → 6 (Hidden Single)
9. Row 2 / Column 9 → 9 (Naked Single)
10. Row 5 / Column 9 → 3 (Hidden Single)
11. Row 1 / Column 2 → 6 (Hidden Single)
12. Row 5 / Column 7 → 9 (Hidden Single)
13. Row 5 / Column 3 → 5 (Naked Single)
14. Row 8 / Column 2 → 5 (Hidden Single)
15. Skyscraper: 4 in r1c5,r8c6 (connected by r18c3) => r2c6,r79c5<>4
16. Row 2 / Column 6 → 3 (Naked Single)
17. Row 9 / Column 5 → 6 (Naked Single)
18. Row 9 / Column 9 → 4 (Full House)
19. Row 7 / Column 9 → 6 (Full House)
20. Row 2 / Column 4 → 2 (Naked Single)
21. Row 7 / Column 5 → 9 (Naked Single)
22. Row 2 / Column 7 → 7 (Naked Single)
23. Row 2 / Column 2 → 4 (Full House)
24. Row 3 / Column 5 → 8 (Naked Single)
25. Row 7 / Column 1 → 2 (Naked Single)
26. Row 8 / Column 4 → 3 (Naked Single)
27. Row 8 / Column 6 → 4 (Full House)
28. Row 8 / Column 3 → 9 (Full House)
29. Row 7 / Column 2 → 7 (Naked Single)
30. Row 7 / Column 3 → 4 (Full House)
31. Row 1 / Column 5 → 4 (Naked Single)
32. Row 3 / Column 9 → 5 (Naked Single)
33. Row 1 / Column 9 → 8 (Full House)
34. Row 4 / Column 5 → 3 (Naked Single)
35. Row 5 / Column 5 → 7 (Naked Single)
36. Row 5 / Column 8 → 8 (Full House)
37. Row 6 / Column 5 → 2 (Full House)
38. Row 1 / Column 3 → 2 (Naked Single)
39. Row 6 / Column 3 → 3 (Naked Single)
40. Row 3 / Column 3 → 7 (Full House)
41. Row 3 / Column 1 → 9 (Naked Single)
42. Row 1 / Column 1 → 5 (Full House)
43. Row 3 / Column 2 → 3 (Full House)
44. Row 4 / Column 8 → 5 (Naked Single)
45. Row 6 / Column 8 → 7 (Full House)
46. Row 1 / Column 7 → 1 (Naked Single)
47. Row 1 / Column 4 → 9 (Full House)
48. Row 3 / Column 6 → 1 (Full House)
49. Row 3 / Column 7 → 2 (Full House)
50. Row 6 / Column 4 → 8 (Naked Single)
51. Row 4 / Column 4 → 1 (Full House)
52. Row 4 / Column 6 → 9 (Naked Single)
53. Row 4 / Column 2 → 8 (Full House)
54. Row 6 / Column 2 → 9 (Full House)
55. Row 6 / Column 6 → 5 (Full House)