5
7
2
1
4
3
9
8
6
9
3
7
5
4
1
2
4
9
3
7
3
1
5
8
6
4
2
9
7
8
9
4
2
3
7
6
5
1
6
2
7
1
5
9
4
3
8
7
5
1
4
3
8
6
2
9
3
4
6
5
2
9
1
7
8
8
9
2
7
1
6
5
4
3
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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