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

This Sudoku Puzzle has 41 steps and it is solved using Naked Single, Full House, Hidden Single, undefined, Uniqueness Test 1, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 7 → 8 (Naked Single)
2. Row 4 / Column 9 → 1 (Naked Single)
3. Row 3 / Column 6 → 6 (Naked Single)
4. Row 7 / Column 7 → 5 (Naked Single)
5. Row 6 / Column 7 → 3 (Naked Single)
6. Row 5 / Column 7 → 4 (Full House)
7. Row 5 / Column 8 → 8 (Naked Single)
8. Row 6 / Column 8 → 5 (Full House)
9. Row 5 / Column 6 → 1 (Naked Single)
10. Row 1 / Column 6 → 8 (Naked Single)
11. Row 8 / Column 6 → 5 (Full House)
12. Row 5 / Column 5 → 6 (Naked Single)
13. Row 4 / Column 2 → 5 (Hidden Single)
14. Row 1 / Column 3 → 4 (Hidden Single)
15. Row 8 / Column 8 → 4 (Hidden Single)
16. Row 3 / Column 9 → 4 (Hidden Single)
17. Row 7 / Column 3 → 2 (Hidden Single)
18. Row 7 / Column 5 → 7 (Hidden Single)
19. Row 9 / Column 8 → 3 (Hidden Single)
20. Row 9 / Column 1 → 5 (Hidden Single)
21. Row 4 / Column 4 → 3 (Hidden Single)
22. Row 4 / Column 3 → 8 (Full House)
23. Row 6 / Column 3 → 1 (Naked Single)
24. Row 7 / Column 2 → 8 (Hidden Single)
25. Row 7 / Column 8 → 1 (Hidden Single)
26. Row 8 / Column 2 → 1 (Hidden Single)
27. Row 8 / Column 5 → 9 (Full House)
28. W-Wing: 7/9 in r1c8,r3c2 connected by 9 in r13c4 => r1c1,r3c8<>7
29. Row 1 / Column 8 → 7 (Hidden Single)
30. Row 5 / Column 1 → 7 (Hidden Single)
31. Row 3 / Column 2 → 7 (Hidden Single)
32. Uniqueness Test 1: 3/9 in r2c23,r5c23 => r2c3<>3, r2c3<>9
33. Row 2 / Column 3 → 6 (Naked Single)
34. Row 9 / Column 3 → 9 (Naked Single)
35. Row 5 / Column 3 → 3 (Full House)
36. Row 7 / Column 1 → 6 (Full House)
37. Row 5 / Column 2 → 9 (Full House)
38. Row 7 / Column 9 → 9 (Full House)
39. Row 9 / Column 9 → 6 (Full House)
40. Row 2 / Column 2 → 3 (Full House)
41. Give Up: Don't know how to proceed!