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

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Hidden Single, Full House, Skyscraper, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 6 → 2 (Naked Single)
2. Row 5 / Column 9 → 9 (Hidden Single)
3. Row 2 / Column 1 → 9 (Hidden Single)
4. Row 4 / Column 3 → 9 (Hidden Single)
5. Row 7 / Column 6 → 9 (Hidden Single)
6. Row 2 / Column 4 → 2 (Hidden Single)
7. Row 3 / Column 9 → 7 (Hidden Single)
8. Row 4 / Column 2 → 6 (Hidden Single)
9. Row 3 / Column 3 → 6 (Hidden Single)
10. Row 7 / Column 5 → 7 (Hidden Single)
11. Row 4 / Column 4 → 7 (Hidden Single)
12. Row 4 / Column 6 → 4 (Naked Single)
13. Row 2 / Column 8 → 6 (Hidden Single)
14. Row 6 / Column 2 → 3 (Hidden Single)
15. Row 3 / Column 2 → 1 (Hidden Single)
16. Row 2 / Column 6 → 7 (Hidden Single)
17. Row 5 / Column 7 → 7 (Hidden Single)
18. Row 7 / Column 9 → 6 (Hidden Single)
19. Row 9 / Column 5 → 6 (Hidden Single)
20. Row 6 / Column 4 → 5 (Hidden Single)
21. Row 5 / Column 5 → 1 (Full House)
22. Row 6 / Column 3 → 8 (Naked Single)
23. Row 6 / Column 8 → 1 (Full House)
24. Row 5 / Column 2 → 2 (Hidden Single)
25. Row 3 / Column 6 → 8 (Hidden Single)
26. Row 8 / Column 6 → 3 (Full House)
27. Row 5 / Column 8 → 8 (Hidden Single)
28. Row 8 / Column 4 → 1 (Hidden Single)
29. Row 9 / Column 4 → 8 (Full House)
30. Row 9 / Column 9 → 3 (Naked Single)
31. Row 7 / Column 1 → 3 (Hidden Single)
32. Row 1 / Column 1 → 8 (Hidden Single)
33. Row 1 / Column 9 → 5 (Naked Single)
34. Row 8 / Column 9 → 8 (Full House)
35. Row 2 / Column 7 → 8 (Hidden Single)
36. Row 7 / Column 2 → 8 (Hidden Single)
37. Skyscraper: 4 in r2c2,r3c8 (connected by r8c28) => r3c1<>4
38. W-Wing: 2/4 in r1c3,r9c1 connected by 4 in r5c13 => r3c1,r9c3<>2
39. Row 3 / Column 1 → 5 (Naked Single)
40. Row 2 / Column 2 → 4 (Naked Single)
41. Row 1 / Column 3 → 2 (Full House)
42. Row 2 / Column 5 → 5 (Full House)
43. Row 8 / Column 2 → 5 (Full House)
44. Row 8 / Column 8 → 4 (Full House)
45. Row 5 / Column 1 → 4 (Naked Single)
46. Row 5 / Column 3 → 5 (Full House)
47. Row 9 / Column 1 → 2 (Full House)
48. Row 7 / Column 3 → 1 (Naked Single)
49. Row 7 / Column 7 → 5 (Full House)
50. Row 9 / Column 7 → 1 (Full House)
51. Row 9 / Column 3 → 4 (Full House)
52. Row 3 / Column 8 → 3 (Naked Single)
53. Row 4 / Column 8 → 5 (Full House)
54. Row 4 / Column 7 → 3 (Full House)
55. Row 1 / Column 7 → 4 (Naked Single)
56. Row 1 / Column 5 → 3 (Full House)
57. Row 3 / Column 5 → 4 (Full House)
58. Row 3 / Column 7 → 2 (Full House)