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

This Sudoku Puzzle has 39 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Single, Full House, Naked Single techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Locked Candidates Type 1 (Pointing): 5 in b1 => r4c1<>5
2. Row 4 / Column 3 → 5 (Hidden Single)
3. Row 5 / Column 3 → 9 (Full House)
4. Row 4 / Column 6 → 9 (Hidden Single)
5. Row 3 / Column 5 → 9 (Hidden Single)
6. Row 3 / Column 1 → 5 (Naked Single)
7. Row 3 / Column 6 → 8 (Full House)
8. Row 2 / Column 1 → 3 (Naked Single)
9. Row 1 / Column 1 → 9 (Full House)
10. Row 8 / Column 6 → 7 (Naked Single)
11. Row 5 / Column 6 → 6 (Naked Single)
12. Row 1 / Column 6 → 5 (Full House)
13. Row 8 / Column 9 → 4 (Naked Single)
14. Row 8 / Column 5 → 8 (Full House)
15. Row 1 / Column 7 → 3 (Hidden Single)
16. Row 4 / Column 1 → 6 (Hidden Single)
17. Row 2 / Column 7 → 5 (Hidden Single)
18. Row 5 / Column 7 → 7 (Naked Single)
19. Row 6 / Column 7 → 6 (Full House)
20. Row 5 / Column 5 → 1 (Naked Single)
21. Row 6 / Column 8 → 8 (Naked Single)
22. Row 5 / Column 8 → 5 (Full House)
23. Row 5 / Column 4 → 8 (Full House)
24. Row 6 / Column 1 → 7 (Full House)
25. Row 4 / Column 4 → 7 (Full House)
26. Row 4 / Column 2 → 8 (Full House)
27. Row 9 / Column 1 → 8 (Full House)
28. Row 9 / Column 2 → 7 (Full House)
29. Row 7 / Column 5 → 6 (Naked Single)
30. Row 2 / Column 4 → 6 (Naked Single)
31. Row 2 / Column 5 → 7 (Full House)
32. Row 9 / Column 5 → 4 (Full House)
33. Row 7 / Column 8 → 7 (Naked Single)
34. Row 1 / Column 8 → 6 (Full House)
35. Row 1 / Column 9 → 7 (Full House)
36. Row 9 / Column 4 → 5 (Naked Single)
37. Row 7 / Column 4 → 1 (Full House)
38. Row 7 / Column 9 → 5 (Full House)
39. Row 9 / Column 9 → 6 (Full House)