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

This Sudoku Puzzle has 31 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Single, Naked Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Locked Candidates Type 1 (Pointing): 2 in b5 => r5c9<>2
2. Row 4 / Column 9 → 2 (Hidden Single)
3. Locked Candidates Type 1 (Pointing): 1 in b6 => r8c9<>1
4. Row 8 / Column 8 → 1 (Hidden Single)
5. Row 2 / Column 8 → 2 (Naked Single)
6. Row 7 / Column 8 → 9 (Naked Single)
7. Row 1 / Column 8 → 3 (Full House)
8. Row 7 / Column 5 → 2 (Full House)
9. Row 8 / Column 9 → 3 (Naked Single)
10. Row 9 / Column 7 → 2 (Full House)
11. Row 9 / Column 6 → 6 (Naked Single)
12. Row 8 / Column 6 → 9 (Naked Single)
13. Row 9 / Column 2 → 4 (Naked Single)
14. Row 8 / Column 2 → 6 (Full House)
15. Row 8 / Column 5 → 4 (Full House)
16. Row 9 / Column 4 → 3 (Full House)
17. Row 1 / Column 6 → 1 (Naked Single)
18. Row 1 / Column 7 → 9 (Full House)
19. Row 5 / Column 6 → 2 (Full House)
20. Row 3 / Column 5 → 9 (Naked Single)
21. Row 2 / Column 4 → 4 (Full House)
22. Row 3 / Column 7 → 4 (Full House)
23. Row 5 / Column 5 → 3 (Full House)
24. Row 2 / Column 7 → 1 (Full House)
25. Row 4 / Column 7 → 3 (Full House)
26. Row 4 / Column 4 → 9 (Full House)
27. Row 6 / Column 4 → 1 (Full House)
28. Row 5 / Column 2 → 9 (Naked Single)
29. Row 5 / Column 9 → 1 (Full House)
30. Row 6 / Column 9 → 9 (Full House)
31. Row 6 / Column 2 → 3 (Full House)