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

This Sudoku Puzzle has 57 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 4 → 5 (Hidden Single)
2. Row 2 / Column 2 → 3 (Hidden Single)
3. Row 9 / Column 4 → 9 (Hidden Single)
4. Row 4 / Column 7 → 2 (Hidden Single)
5. Row 1 / Column 2 → 9 (Hidden Single)
6. Row 3 / Column 8 → 9 (Hidden Single)
7. Row 7 / Column 4 → 6 (Hidden Single)
8. Row 2 / Column 5 → 9 (Hidden Single)
9. Locked Pair: 6,7 in r2c13 => r2c78,r3c1<>6, r1c3,r2c8,r3c1<>7
10. Row 7 / Column 8 → 7 (Hidden Single)
11. Row 3 / Column 9 → 7 (Hidden Single)
12. Row 1 / Column 5 → 7 (Hidden Single)
13. Row 5 / Column 2 → 7 (Hidden Single)
14. Row 3 / Column 7 → 6 (Hidden Single)
15. Row 1 / Column 4 → 4 (Hidden Single)
16. Row 1 / Column 7 → 1 (Naked Single)
17. Row 1 / Column 3 → 2 (Full House)
18. Row 3 / Column 1 → 1 (Naked Single)
19. Row 7 / Column 3 → 8 (Naked Single)
20. Row 4 / Column 6 → 7 (Hidden Single)
21. Row 3 / Column 4 → 2 (Hidden Single)
22. Row 3 / Column 6 → 8 (Full House)
23. Row 4 / Column 3 → 1 (Hidden Single)
24. Row 4 / Column 4 → 3 (Naked Single)
25. Row 7 / Column 9 → 1 (Hidden Single)
26. Row 6 / Column 1 → 2 (Hidden Single)
27. Row 5 / Column 6 → 5 (Hidden Single)
28. Row 6 / Column 8 → 5 (Hidden Single)
29. Row 4 / Column 1 → 5 (Hidden Single)
30. Row 9 / Column 7 → 5 (Hidden Single)
31. Row 8 / Column 3 → 5 (Hidden Single)
32. Row 6 / Column 4 → 1 (Hidden Single)
33. Row 5 / Column 4 → 8 (Full House)
34. Row 5 / Column 8 → 1 (Hidden Single)
35. Row 6 / Column 9 → 8 (Hidden Single)
36. Row 2 / Column 7 → 8 (Hidden Single)
37. Row 2 / Column 8 → 4 (Full House)
38. Row 4 / Column 8 → 6 (Naked Single)
39. Row 4 / Column 5 → 4 (Full House)
40. Row 8 / Column 8 → 8 (Full House)
41. Row 6 / Column 5 → 6 (Full House)
42. Row 6 / Column 2 → 4 (Full House)
43. Row 5 / Column 1 → 6 (Full House)
44. Row 7 / Column 2 → 2 (Naked Single)
45. Row 8 / Column 2 → 6 (Full House)
46. Row 2 / Column 1 → 7 (Naked Single)
47. Row 2 / Column 3 → 6 (Full House)
48. Row 9 / Column 3 → 7 (Full House)
49. Row 9 / Column 1 → 4 (Full House)
50. Row 8 / Column 9 → 4 (Naked Single)
51. Row 8 / Column 6 → 2 (Full House)
52. Row 9 / Column 6 → 3 (Naked Single)
53. Row 7 / Column 6 → 4 (Full House)
54. Row 7 / Column 7 → 3 (Full House)
55. Row 9 / Column 9 → 6 (Full House)
56. Row 5 / Column 9 → 3 (Full House)
57. Row 5 / Column 7 → 4 (Full House)