7
9
3
4
2
1
6
8
5
5
8
2
7
9
7
1
3
4
1
6
4
5
3
8
9
2
7
9
7
2
8
1
6
5
3
4
4
5
8
3
2
9
6
7
1
3
6
1
4
5
7
2
8
9
3
6
7
2
5
9
1
4
8
8
1
5
7
4
6
2
3
3
7
4
2
8
1
3
6
9
5
This Sudoku Puzzle has 12 steps and it is solved using Full House, Naked Single techniques.
Naked Single
Explanation
Full House
Explanation
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