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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 9 / Column 6 → 1 (Naked Single)
2. Row 9 / Column 5 → 5 (Naked Single)
3. Row 8 / Column 5 → 4 (Naked Single)
4. Row 9 / Column 7 → 3 (Naked Single)
5. Row 9 / Column 2 → 9 (Full House)
6. Row 7 / Column 5 → 8 (Naked Single)
7. Row 1 / Column 5 → 1 (Naked Single)
8. Row 4 / Column 5 → 6 (Naked Single)
9. Row 2 / Column 5 → 3 (Full House)
10. Row 7 / Column 6 → 2 (Naked Single)
11. Row 7 / Column 4 → 7 (Full House)
12. Row 4 / Column 8 → 1 (Hidden Single)
13. Row 8 / Column 9 → 2 (Hidden Single)
14. Row 8 / Column 3 → 6 (Hidden Single)
15. Row 8 / Column 7 → 1 (Hidden Single)
16. Row 8 / Column 2 → 5 (Naked Single)
17. Row 8 / Column 8 → 7 (Full House)
18. Row 2 / Column 2 → 8 (Naked Single)
19. Row 2 / Column 4 → 5 (Naked Single)
20. Row 2 / Column 1 → 9 (Naked Single)
21. Row 2 / Column 8 → 6 (Full House)
22. Row 3 / Column 6 → 6 (Hidden Single)
23. Row 1 / Column 9 → 7 (Hidden Single)
24. Row 1 / Column 8 → 9 (Hidden Single)
25. Row 7 / Column 8 → 5 (Naked Single)
26. Row 7 / Column 9 → 9 (Full House)
27. Row 6 / Column 8 → 3 (Naked Single)
28. Row 3 / Column 8 → 4 (Full House)
29. Row 3 / Column 9 → 3 (Hidden Single)
30. W-Wing: 5/8 in r1c7,r6c3 connected by 8 in r16c6 => r1c3<>5
31. Row 1 / Column 3 → 2 (Naked Single)
32. Row 1 / Column 7 → 5 (Hidden Single)
33. Row 3 / Column 7 → 8 (Full House)
34. Row 3 / Column 4 → 2 (Naked Single)
35. Row 4 / Column 2 → 2 (Hidden Single)
36. XY-Wing: 5/8/4 in r4c1,r6c36 => r4c4,r6c12<>4
37. Row 6 / Column 2 → 7 (Naked Single)
38. Row 3 / Column 2 → 1 (Naked Single)
39. Row 3 / Column 3 → 5 (Naked Single)
40. Row 3 / Column 1 → 7 (Full House)
41. Row 5 / Column 2 → 3 (Naked Single)
42. Row 7 / Column 2 → 4 (Full House)
43. Row 6 / Column 3 → 8 (Naked Single)
44. Row 7 / Column 1 → 1 (Naked Single)
45. Row 7 / Column 3 → 3 (Full House)
46. Row 4 / Column 3 → 9 (Naked Single)
47. Row 5 / Column 3 → 1 (Full House)
48. Row 6 / Column 6 → 4 (Naked Single)
49. Row 1 / Column 6 → 8 (Full House)
50. Row 1 / Column 4 → 4 (Full House)
51. Row 5 / Column 1 → 6 (Naked Single)
52. Row 4 / Column 4 → 8 (Naked Single)
53. Row 5 / Column 4 → 9 (Full House)
54. Row 5 / Column 9 → 8 (Full House)
55. Row 6 / Column 1 → 5 (Naked Single)
56. Row 4 / Column 1 → 4 (Full House)
57. Row 4 / Column 9 → 5 (Full House)
58. Row 6 / Column 9 → 6 (Full House)