1
6
7
8
8
4
2
2
9
5
2
4
9
7
6
8
3
1
1
9
8
2
5
3
6
7
4
9
9
3
7
1
2
4
4
6
2
6
7
4
8
5
3
1
9
4
8
1
9
3
6
5
2
7
5
5
5
3
3
3
6
7
8
1
4
2
6
5
8
7
9
3
3
6
9
7
1
2
8
4
5
This Sudoku Puzzle has 27 steps and it is solved using Full House, Naked Single, Hidden Single techniques.
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