3
7
4
8
2
5
9
6
1
8
1
9
7
6
3
2
5
4
5
2
6
1
9
4
3
8
7
5
4
8
2
1
7
6
9
3
6
7
2
5
3
8
9
8
1
9
1
3
6
6
8
4
5
2
1
3
6
7
8
9
4
5
2
4
9
5
3
9
6
1
2
7
2
7
9
2
4
5
8
3
9
This Sudoku Puzzle has 25 steps and it is solved using Full House, Naked Single, Hidden Single techniques.
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