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

This Sudoku Puzzle has 54 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 4 → 8 (Naked Single)
2. Row 6 / Column 5 → 3 (Naked Single)
3. Row 2 / Column 6 → 5 (Naked Single)
4. Row 1 / Column 7 → 9 (Naked Single)
5. Row 3 / Column 7 → 3 (Naked Single)
6. Row 2 / Column 8 → 6 (Naked Single)
7. Row 4 / Column 7 → 8 (Naked Single)
8. Row 1 / Column 9 → 5 (Naked Single)
9. Row 3 / Column 9 → 1 (Full House)
10. Row 2 / Column 2 → 8 (Naked Single)
11. Row 7 / Column 7 → 4 (Naked Single)
12. Row 8 / Column 7 → 2 (Full House)
13. Row 1 / Column 3 → 6 (Naked Single)
14. Row 1 / Column 2 → 7 (Full House)
15. Row 6 / Column 9 → 4 (Naked Single)
16. Row 4 / Column 3 → 1 (Hidden Single)
17. Row 2 / Column 1 → 3 (Hidden Single)
18. Row 4 / Column 8 → 3 (Hidden Single)
19. Row 9 / Column 3 → 8 (Hidden Single)
20. Row 5 / Column 3 → 2 (Naked Single)
21. Row 6 / Column 2 → 5 (Naked Single)
22. Row 6 / Column 8 → 2 (Full House)
23. Row 3 / Column 2 → 2 (Naked Single)
24. Row 4 / Column 1 → 6 (Naked Single)
25. Row 5 / Column 1 → 8 (Full House)
26. Row 3 / Column 5 → 6 (Hidden Single)
27. Row 5 / Column 4 → 6 (Hidden Single)
28. Locked Pair: 7,9 in r45c9 => r5c8,r78c9<>7, r5c8,r78c9<>9
29. Row 5 / Column 8 → 9 (Naked Single)
30. Row 4 / Column 9 → 7 (Naked Single)
31. Row 4 / Column 5 → 9 (Full House)
32. Row 4 / Column 6 → 9 (Full House)
33. Row 5 / Column 9 → 7 (Naked Single)
34. Row 8 / Column 8 → 7 (Naked Single)
35. Row 9 / Column 8 → 7 (Naked Single)
36. Row 3 / Column 6 → 7 (Naked Single)
37. Row 3 / Column 4 → 9 (Hidden Single)
38. Row 7 / Column 1 → 7 (Hidden Single)
39. Row 7 / Column 4 → 5 (Naked Single)
40. Row 7 / Column 3 → 3 (Naked Single)
41. Row 7 / Column 6 → 8 (Naked Single)
42. Row 7 / Column 9 → 6 (Naked Single)
43. Row 7 / Column 2 → 9 (Full House)
44. Row 8 / Column 6 → 3 (Naked Single)
45. Row 8 / Column 9 → 8 (Naked Single)
46. Row 9 / Column 2 → 1 (Naked Single)
47. Row 8 / Column 2 → 6 (Full House)
48. Row 9 / Column 4 → 4 (Naked Single)
49. Row 2 / Column 4 → 1 (Full House)
50. Row 8 / Column 4 → 1 (Full House)
51. Row 2 / Column 5 → 4 (Full House)
52. Row 9 / Column 5 → 4 (Naked Single)
53. Row 8 / Column 5 → 1 (Naked Single)
54. Give Up: Don't know how to proceed!