2
8
1
7
4
7
3
5
6
6
5
3
1
2
9
8
4
7
7
8
4
6
3
5
2
1
9
4
6
3
8
2
5
9
1
9
9
8
1
7
3
5
2
6
6
5
2
7
9
6
1
3
4
8
6
9
4
1
7
8
5
3
2
5
1
2
3
9
3
4
7
8
8
7
3
4
5
2
1
9
6
This Sudoku Puzzle has 36 steps and it is solved using Hidden Single, Naked Single, Full House techniques.
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