5
4
3
7
2
1
6
9
8
6
1
7
4
8
9
5
2
3
8
2
9
3
6
5
7
1
4
2
3
9
1
7
6
8
5
4
9
5
8
3
9
2
7
6
1
6
7
1
4
5
8
9
3
2
9
6
2
4
1
7
9
8
5
1
7
4
8
3
5
2
7
6
5
8
3
2
9
6
1
4
3
This Sudoku Puzzle has 28 steps and it is solved using Naked Single, Full House, Hidden Single techniques.
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