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

This Sudoku Puzzle has 51 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Uniqueness Test 1, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 5 / Column 8 → 5 (Naked Single)
2. Row 8 / Column 8 → 3 (Full House)
3. Row 6 / Column 3 → 9 (Hidden Single)
4. Row 3 / Column 3 → 7 (Hidden Single)
5. Row 2 / Column 5 → 7 (Hidden Single)
6. Row 5 / Column 4 → 7 (Hidden Single)
7. Row 2 / Column 7 → 5 (Hidden Single)
8. Row 6 / Column 6 → 2 (Hidden Single)
9. Row 8 / Column 1 → 8 (Hidden Single)
10. Row 2 / Column 6 → 9 (Hidden Single)
11. Row 4 / Column 6 → 4 (Hidden Single)
12. Row 6 / Column 2 → 8 (Hidden Single)
13. Row 6 / Column 4 → 6 (Naked Single)
14. Row 5 / Column 6 → 1 (Naked Single)
15. Row 6 / Column 5 → 5 (Naked Single)
16. Row 7 / Column 4 → 9 (Naked Single)
17. Row 9 / Column 4 → 8 (Full House)
18. Row 5 / Column 2 → 6 (Naked Single)
19. Row 5 / Column 5 → 9 (Full House)
20. Row 4 / Column 5 → 8 (Full House)
21. Row 4 / Column 1 → 1 (Naked Single)
22. Row 4 / Column 3 → 5 (Full House)
23. Row 2 / Column 9 → 8 (Hidden Single)
24. Row 3 / Column 6 → 8 (Hidden Single)
25. Row 9 / Column 2 → 5 (Hidden Single)
26. Row 9 / Column 1 → 9 (Hidden Single)
27. Row 3 / Column 1 → 6 (Hidden Single)
28. Row 1 / Column 2 → 1 (Hidden Single)
29. Row 6 / Column 9 → 4 (Hidden Single)
30. Row 6 / Column 7 → 3 (Full House)
31. Row 1 / Column 7 → 4 (Naked Single)
32. Row 3 / Column 7 → 1 (Naked Single)
33. Row 3 / Column 9 → 3 (Full House)
34. Locked Candidates Type 1 (Pointing): 3 in b7 => r7c5<>3
35. Uniqueness Test 1: 3/6 in r1c56,r9c56 => r9c5<>3, r9c5<>6
36. Row 9 / Column 5 → 1 (Naked Single)
37. Row 7 / Column 5 → 6 (Naked Single)
38. Row 1 / Column 5 → 3 (Full House)
39. Row 9 / Column 6 → 3 (Full House)
40. Row 1 / Column 6 → 6 (Full House)
41. Row 7 / Column 7 → 2 (Naked Single)
42. Row 7 / Column 1 → 3 (Naked Single)
43. Row 2 / Column 1 → 2 (Full House)
44. Row 7 / Column 2 → 4 (Naked Single)
45. Row 2 / Column 2 → 3 (Full House)
46. Row 2 / Column 3 → 4 (Full House)
47. Row 7 / Column 3 → 1 (Full House)
48. Row 8 / Column 3 → 6 (Naked Single)
49. Row 8 / Column 9 → 1 (Full House)
50. Row 9 / Column 3 → 2 (Full House)
51. Give Up: Don't know how to proceed!