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

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

Try To Solve This Puzzle

## Solution Steps:

1. Locked Triple: 1,3,6 in r456c3 => r37c3,r46c2,r5c1<>1, r3c3,r5c1<>3, r46c2<>6
2. Row 5 / Column 1 → 8 (Naked Single)
3. Row 5 / Column 7 → 6 (Naked Single)
4. Locked Candidates Type 1 (Pointing): 2 in b4 => r23c2<>2
5. Locked Candidates Type 1 (Pointing): 5 in b4 => r8c2<>5
6. Locked Candidates Type 1 (Pointing): 2 in b6 => r7c7<>2
7. Naked Pair: 1,3 in r5c39 => r5c4<>1, r5c46<>3
8. X-Wing: 7 c37 r37 => r3c2568,r7c2458<>7
9. Skyscraper: 7 in r8c5,r9c8 (connected by r2c58) => r9c46<>7
10. Row 9 / Column 8 → 7 (Hidden Single)
11. Row 3 / Column 7 → 7 (Hidden Single)
12. Row 3 / Column 3 → 4 (Naked Single)
13. Row 7 / Column 3 → 7 (Naked Single)
14. Row 7 / Column 8 → 9 (Hidden Single)
15. Row 7 / Column 2 → 1 (Naked Single)
16. Row 3 / Column 2 → 8 (Naked Single)
17. Row 8 / Column 1 → 5 (Naked Single)
18. Row 8 / Column 2 → 9 (Naked Single)
19. Row 9 / Column 1 → 4 (Full House)
20. Row 8 / Column 9 → 8 (Naked Single)
21. Row 7 / Column 7 → 4 (Naked Single)
22. Row 8 / Column 6 → 7 (Naked Single)
23. Row 8 / Column 5 → 1 (Full House)
24. Row 4 / Column 7 → 2 (Naked Single)
25. Row 6 / Column 7 → 8 (Full House)
26. Row 7 / Column 9 → 2 (Naked Single)
27. Row 9 / Column 9 → 5 (Full House)
28. Row 5 / Column 6 → 9 (Naked Single)
29. Row 4 / Column 2 → 5 (Naked Single)
30. Row 7 / Column 4 → 3 (Naked Single)
31. Row 7 / Column 5 → 8 (Full House)
32. Row 5 / Column 4 → 7 (Naked Single)
33. Row 9 / Column 6 → 2 (Naked Single)
34. Row 9 / Column 4 → 9 (Full House)
35. Row 4 / Column 5 → 3 (Naked Single)
36. Row 6 / Column 2 → 2 (Naked Single)
37. Row 1 / Column 4 → 6 (Naked Single)
38. Row 3 / Column 6 → 3 (Naked Single)
39. Row 2 / Column 5 → 7 (Naked Single)
40. Row 3 / Column 5 → 9 (Naked Single)
41. Row 6 / Column 5 → 5 (Full House)
42. Row 4 / Column 6 → 6 (Naked Single)
43. Row 6 / Column 4 → 1 (Full House)
44. Row 2 / Column 4 → 2 (Full House)
45. Row 1 / Column 6 → 8 (Full House)
46. Row 1 / Column 2 → 7 (Naked Single)
47. Row 2 / Column 2 → 6 (Full House)
48. Row 3 / Column 8 → 1 (Naked Single)
49. Row 3 / Column 1 → 2 (Full House)
50. Row 4 / Column 3 → 1 (Naked Single)
51. Row 4 / Column 8 → 4 (Full House)
52. Row 6 / Column 8 → 3 (Naked Single)
53. Row 2 / Column 8 → 8 (Full House)
54. Row 5 / Column 9 → 1 (Full House)
55. Row 5 / Column 3 → 3 (Full House)
56. Row 6 / Column 3 → 6 (Full House)
57. Row 2 / Column 1 → 3 (Naked Single)
58. Row 1 / Column 1 → 1 (Full House)
59. Row 1 / Column 9 → 3 (Full House)
60. Row 2 / Column 9 → 4 (Full House)