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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 7 → 5 (Hidden Single)
2. Row 8 / Column 6 → 8 (Hidden Single)
3. Row 2 / Column 8 → 8 (Hidden Single)
4. Row 7 / Column 5 → 9 (Hidden Single)
5. Row 8 / Column 8 → 7 (Hidden Single)
6. Row 7 / Column 3 → 7 (Hidden Single)
7. Row 2 / Column 2 → 7 (Hidden Single)
8. Row 1 / Column 9 → 7 (Hidden Single)
9. Row 8 / Column 2 → 4 (Hidden Single)
10. Row 3 / Column 1 → 4 (Hidden Single)
11. Row 1 / Column 5 → 3 (Hidden Single)
12. Row 8 / Column 3 → 2 (Hidden Single)
13. Row 3 / Column 5 → 2 (Hidden Single)
14. Row 4 / Column 5 → 6 (Naked Single)
15. Row 1 / Column 1 → 2 (Hidden Single)
16. Row 8 / Column 4 → 5 (Hidden Single)
17. Row 9 / Column 5 → 7 (Naked Single)
18. Row 9 / Column 4 → 6 (Full House)
19. Row 6 / Column 1 → 1 (Hidden Single)
20. Row 5 / Column 4 → 7 (Hidden Single)
21. Row 7 / Column 1 → 6 (Hidden Single)
22. Row 7 / Column 7 → 3 (Naked Single)
23. Row 7 / Column 9 → 8 (Full House)
24. Locked Candidates Type 1 (Pointing): 6 in b1 => r56c3<>6
25. W-Wing: 1/4 in r2c4,r9c9 connected by 4 in r6c49 => r2c9<>1
26. Row 2 / Column 9 → 6 (Naked Single)
27. Row 8 / Column 9 → 9 (Naked Single)
28. Row 8 / Column 7 → 6 (Full House)
29. Row 1 / Column 6 → 6 (Hidden Single)
30. Row 1 / Column 3 → 1 (Full House)
31. Row 3 / Column 3 → 6 (Full House)
32. Row 6 / Column 8 → 6 (Hidden Single)
33. Row 5 / Column 2 → 6 (Hidden Single)
34. Row 5 / Column 9 → 3 (Hidden Single)
35. Row 3 / Column 9 → 1 (Naked Single)
36. Row 4 / Column 8 → 9 (Naked Single)
37. Row 3 / Column 8 → 3 (Full House)
38. Row 3 / Column 7 → 9 (Full House)
39. Row 9 / Column 9 → 4 (Naked Single)
40. Row 6 / Column 9 → 2 (Full House)
41. Row 5 / Column 7 → 4 (Full House)
42. Row 9 / Column 7 → 1 (Full House)
43. Row 6 / Column 2 → 3 (Naked Single)
44. Row 4 / Column 2 → 2 (Full House)
45. Row 5 / Column 5 → 5 (Naked Single)
46. Row 2 / Column 5 → 4 (Full House)
47. Row 6 / Column 4 → 4 (Naked Single)
48. Row 4 / Column 6 → 1 (Naked Single)
49. Row 4 / Column 4 → 3 (Full House)
50. Row 2 / Column 4 → 1 (Full House)
51. Row 2 / Column 6 → 5 (Full House)
52. Row 5 / Column 1 → 8 (Naked Single)
53. Row 9 / Column 1 → 5 (Full House)
54. Row 9 / Column 3 → 8 (Full House)
55. Row 6 / Column 6 → 9 (Naked Single)
56. Row 5 / Column 6 → 2 (Full House)
57. Row 5 / Column 3 → 9 (Full House)
58. Row 6 / Column 3 → 5 (Full House)