7
9
1
3
5
4
6
8
2
2
4
8
1
6
9
3
7
5
6
5
3
2
7
8
9
4
1
1
6
7
8
4
5
9
2
3
8
9
2
7
3
6
5
1
4
5
3
4
1
9
2
7
8
6
5
3
6
2
1
8
4
7
9
4
2
7
9
5
3
6
8
1
8
1
9
4
6
7
3
2
5
This Sudoku Puzzle has 35 steps and it is solved using Full House, Hidden Single, Naked Single techniques.
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