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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 2 (Claiming), Naked Triple, Skyscraper, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 7 → 6 (Hidden Single)
2. Row 5 / Column 7 → 7 (Hidden Single)
3. Row 2 / Column 8 → 7 (Hidden Single)
4. Row 6 / Column 3 → 6 (Hidden Single)
5. Row 4 / Column 5 → 6 (Hidden Single)
6. Row 7 / Column 9 → 6 (Hidden Single)
7. Row 8 / Column 1 → 6 (Hidden Single)
8. Row 1 / Column 3 → 7 (Hidden Single)
9. Row 5 / Column 9 → 1 (Hidden Single)
10. Row 7 / Column 2 → 7 (Hidden Single)
11. Row 3 / Column 6 → 7 (Hidden Single)
12. Row 9 / Column 4 → 7 (Hidden Single)
13. Row 2 / Column 6 → 2 (Hidden Single)
14. Locked Pair: 4,9 in r56c6 => r4c46,r5c5,r6c4,r8c6<>9, r5c5,r6c4,r8c6<>4
15. Row 5 / Column 5 → 3 (Naked Single)
16. Row 6 / Column 4 → 8 (Naked Single)
17. Row 6 / Column 6 → 4 (Hidden Single)
18. Row 5 / Column 6 → 9 (Naked Single)
19. Row 6 / Column 2 → 3 (Hidden Single)
20. Row 4 / Column 8 → 8 (Hidden Single)
21. Row 4 / Column 3 → 9 (Naked Single)
22. Row 4 / Column 2 → 2 (Naked Single)
23. Row 8 / Column 7 → 8 (Hidden Single)
24. Row 8 / Column 4 → 3 (Hidden Single)
25. Locked Candidates Type 2 (Claiming): 5 in r8 => r7c45,r9c5<>5
26. Naked Triple: 2,4,9 in r89c8,r9c9 => r79c7<>2, r79c7<>9
27. Row 7 / Column 5 → 2 (Hidden Single)
28. Skyscraper: 9 in r2c2,r7c1 (connected by r27c4) => r13c1,r8c2<>9
29. Row 8 / Column 2 → 1 (Naked Single)
30. Row 2 / Column 2 → 9 (Full House)
31. Row 8 / Column 6 → 5 (Naked Single)
32. Row 4 / Column 6 → 1 (Full House)
33. Row 4 / Column 4 → 5 (Full House)
34. Row 2 / Column 4 → 1 (Naked Single)
35. Row 2 / Column 3 → 5 (Full House)
36. Row 1 / Column 5 → 9 (Naked Single)
37. Row 3 / Column 4 → 4 (Naked Single)
38. Row 3 / Column 5 → 5 (Full House)
39. Row 7 / Column 4 → 9 (Full House)
40. Row 8 / Column 5 → 4 (Naked Single)
41. Row 8 / Column 8 → 9 (Full House)
42. Row 9 / Column 5 → 1 (Full House)
43. Row 6 / Column 8 → 2 (Naked Single)
44. Row 6 / Column 7 → 9 (Full House)
45. Row 9 / Column 8 → 4 (Full House)
46. Row 9 / Column 9 → 2 (Naked Single)
47. Row 9 / Column 3 → 3 (Naked Single)
48. Row 1 / Column 9 → 8 (Naked Single)
49. Row 3 / Column 9 → 9 (Full House)
50. Row 7 / Column 3 → 4 (Naked Single)
51. Row 9 / Column 7 → 5 (Naked Single)
52. Row 7 / Column 7 → 3 (Full House)
53. Row 7 / Column 1 → 5 (Full House)
54. Row 9 / Column 1 → 9 (Full House)
55. Row 1 / Column 1 → 2 (Naked Single)
56. Row 1 / Column 7 → 1 (Full House)
57. Row 3 / Column 7 → 2 (Full House)
58. Row 5 / Column 3 → 8 (Naked Single)
59. Row 3 / Column 3 → 1 (Full House)
60. Row 3 / Column 1 → 8 (Full House)
61. Row 5 / Column 1 → 4 (Full House)