3
6
9
1
8
4
5
7
2
2
4
8
3
7
5
1
6
9
1
5
7
6
2
9
8
3
4
9
1
3
2
5
7
8
4
6
6
8
4
9
1
3
5
2
7
2
7
5
4
6
8
3
9
1
7
9
1
6
3
8
4
2
5
4
3
2
7
5
1
8
9
6
5
8
6
9
4
2
7
1
3
This Sudoku Puzzle has 24 steps and it is solved using Full House, Naked Single techniques.
Naked Single
Explanation
Full House
Explanation
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