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

This Sudoku Puzzle has 31 steps and it is solved using Full House, Hidden Single, Naked Single, Hidden Pair techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 5 / Column 9 → 8 (Full House)
2. Row 3 / Column 3 → 4 (Hidden Single)
3. Row 4 / Column 3 → 8 (Hidden Single)
4. Row 9 / Column 6 → 8 (Hidden Single)
5. Row 8 / Column 4 → 5 (Naked Single)
6. Row 7 / Column 4 → 9 (Naked Single)
7. Row 7 / Column 3 → 5 (Full House)
8. Row 9 / Column 4 → 4 (Full House)
9. Row 8 / Column 3 → 6 (Naked Single)
10. Row 1 / Column 3 → 9 (Full House)
11. Row 8 / Column 2 → 8 (Full House)
12. Row 1 / Column 4 → 7 (Naked Single)
13. Row 4 / Column 4 → 2 (Full House)
14. Row 6 / Column 4 → 2 (Full House)
15. Row 3 / Column 2 → 7 (Naked Single)
16. Row 3 / Column 7 → 9 (Full House)
17. Row 2 / Column 7 → 7 (Full House)
18. Row 2 / Column 6 → 9 (Full House)
19. Row 1 / Column 6 → 4 (Full House)
20. Row 9 / Column 2 → 9 (Naked Single)
21. Row 9 / Column 1 → 7 (Full House)
22. Hidden Pair: 2,5 in r6c12 => r6c12<>6, r6c1<>9
23. Row 6 / Column 1 → 5 (Naked Single)
24. Row 6 / Column 2 → 5 (Naked Single)
25. Row 1 / Column 1 → 6 (Full House)
26. Row 1 / Column 2 → 6 (Full House)
27. Row 4 / Column 1 → 9 (Full House)
28. Row 4 / Column 9 → 7 (Naked Single)
29. Row 4 / Column 6 → 6 (Full House)
30. Row 6 / Column 6 → 7 (Full House)
31. Row 6 / Column 9 → 9 (Naked Single)
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