1
5
7
4
6
3
2
8
9
6
8
3
2
9
7
4
5
1
9
2
4
1
8
7
6
3
9
4
5
7
6
3
5
9
6
2
6
7
3
1
4
9
9
4
8
3
2
8
2
6
9
4
5
2
6
8
9
5
This Sudoku Puzzle has 23 steps and it is solved using Full House, Naked Single, Hidden Single techniques.
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