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

This Sudoku Puzzle has 45 steps and it is solved using Naked Single, Full House, Hidden Single, Uniqueness Test 2, Uniqueness Test 3, undefined, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 2 → 3 (Naked Single)
2. Row 2 / Column 3 → 6 (Naked Single)
3. Row 2 / Column 4 → 3 (Naked Single)
4. Row 3 / Column 3 → 2 (Naked Single)
5. Row 6 / Column 3 → 9 (Naked Single)
6. Row 4 / Column 3 → 1 (Naked Single)
7. Row 9 / Column 3 → 3 (Full House)
8. Row 5 / Column 1 → 6 (Naked Single)
9. Row 4 / Column 2 → 4 (Naked Single)
10. Row 6 / Column 2 → 7 (Full House)
11. Row 5 / Column 5 → 3 (Naked Single)
12. Row 5 / Column 6 → 9 (Naked Single)
13. Row 4 / Column 4 → 6 (Naked Single)
14. Row 6 / Column 5 → 2 (Full House)
15. Row 4 / Column 7 → 2 (Naked Single)
16. Row 4 / Column 8 → 9 (Full House)
17. Row 8 / Column 6 → 2 (Hidden Single)
18. Row 7 / Column 1 → 9 (Hidden Single)
19. Row 9 / Column 8 → 7 (Hidden Single)
20. Row 8 / Column 4 → 9 (Hidden Single)
21. Row 7 / Column 6 → 3 (Hidden Single)
22. Row 7 / Column 5 → 6 (Hidden Single)
23. Row 1 / Column 5 → 5 (Naked Single)
24. Row 1 / Column 8 → 6 (Full House)
25. Row 3 / Column 4 → 1 (Naked Single)
26. Row 9 / Column 4 → 5 (Full House)
27. Row 8 / Column 5 → 1 (Naked Single)
28. Row 3 / Column 6 → 6 (Hidden Single)
29. Row 7 / Column 2 → 8 (Hidden Single)
30. Row 9 / Column 2 → 1 (Full House)
31. Row 6 / Column 7 → 6 (Hidden Single)
32. Uniqueness Test 2: 3/4 in r3c89,r6c89 => r3c7<>5
33. Uniqueness Test 3: 3/5 in r3c79,r8c79 => r3c8<>4
34. W-Wing: 3/5 in r3c8,r8c7 connected by 5 in r5c78 => r3c7<>3
35. Row 8 / Column 7 → 3 (Hidden Single)
36. Row 8 / Column 9 → 5 (Full House)
37. Row 5 / Column 7 → 5 (Hidden Single)
38. Row 5 / Column 8 → 1 (Full House)
39. Row 7 / Column 8 → 4 (Naked Single)
40. Row 7 / Column 7 → 1 (Full House)
41. Row 6 / Column 8 → 3 (Naked Single)
42. Row 3 / Column 8 → 5 (Full House)
43. Row 6 / Column 9 → 4 (Full House)
44. Row 3 / Column 9 → 3 (Full House)
45. Give Up: Don't know how to proceed!