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