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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 1 → 9 (Hidden Single)
2. Row 4 / Column 6 → 3 (Hidden Single)
3. Row 7 / Column 4 → 1 (Hidden Single)
4. Row 4 / Column 2 → 5 (Hidden Single)
5. Row 9 / Column 6 → 5 (Hidden Single)
6. Row 5 / Column 5 → 5 (Hidden Single)
7. Row 9 / Column 1 → 1 (Hidden Single)
8. Row 8 / Column 4 → 6 (Hidden Single)
9. Row 4 / Column 8 → 1 (Hidden Single)
10. Row 6 / Column 2 → 1 (Hidden Single)
11. Row 8 / Column 6 → 7 (Hidden Single)
12. Row 6 / Column 4 → 8 (Hidden Single)
13. Row 4 / Column 4 → 4 (Naked Single)
14. Row 2 / Column 4 → 2 (Full House)
15. Row 4 / Column 7 → 8 (Full House)
16. Row 6 / Column 6 → 2 (Full House)
17. Row 6 / Column 8 → 4 (Full House)
18. Row 9 / Column 9 → 8 (Hidden Single)
19. Locked Candidates Type 1 (Pointing): 4 in b8 => r123c5<>4
20. Row 2 / Column 5 → 8 (Naked Single)
21. Row 2 / Column 2 → 4 (Naked Single)
22. Row 2 / Column 6 → 9 (Naked Single)
23. Row 8 / Column 2 → 8 (Hidden Single)
24. Row 1 / Column 7 → 9 (Hidden Single)
25. Locked Candidates Type 2 (Claiming): 4 in r8 => r7c13,r9c3<>4
26. Naked Pair: 2,4 in r7c59 => r7c378<>2, r7c7<>4
27. Row 7 / Column 7 → 6 (Naked Single)
28. Row 5 / Column 8 → 6 (Hidden Single)
29. Row 9 / Column 2 → 6 (Hidden Single)
30. Row 1 / Column 2 → 2 (Full House)
31. Row 1 / Column 3 → 3 (Naked Single)
32. Row 1 / Column 5 → 1 (Naked Single)
33. Row 3 / Column 5 → 3 (Naked Single)
34. Row 3 / Column 9 → 1 (Hidden Single)
35. W-Wing: 4/2 in r3c7,r7c9 connected by 2 in r5c79 => r1c9,r9c7<>4
36. Row 1 / Column 9 → 7 (Naked Single)
37. Row 1 / Column 1 → 6 (Naked Single)
38. Row 1 / Column 6 → 4 (Full House)
39. Row 3 / Column 6 → 6 (Full House)
40. Row 2 / Column 8 → 5 (Naked Single)
41. Row 2 / Column 1 → 7 (Full House)
42. Row 5 / Column 9 → 2 (Naked Single)
43. Row 5 / Column 7 → 7 (Full House)
44. Row 7 / Column 9 → 4 (Full House)
45. Row 3 / Column 8 → 2 (Naked Single)
46. Row 3 / Column 7 → 4 (Full House)
47. Row 9 / Column 7 → 2 (Full House)
48. Row 7 / Column 5 → 2 (Naked Single)
49. Row 9 / Column 5 → 4 (Full House)
50. Row 8 / Column 8 → 3 (Naked Single)
51. Row 9 / Column 3 → 9 (Naked Single)
52. Row 9 / Column 8 → 7 (Full House)
53. Row 7 / Column 8 → 9 (Full House)
54. Row 8 / Column 1 → 4 (Naked Single)
55. Row 8 / Column 3 → 2 (Full House)
56. Row 7 / Column 3 → 5 (Naked Single)
57. Row 7 / Column 1 → 3 (Full House)
58. Row 5 / Column 1 → 8 (Naked Single)
59. Row 3 / Column 1 → 5 (Full House)
60. Row 3 / Column 3 → 8 (Full House)
61. Row 5 / Column 3 → 4 (Full House)