5
7
6
1
9
9
6
7
4
8
1
3
2
5
9
7
2
7
6
4
3
8
5
1
1
4
3
8
5
2
6
7
9
5
8
6
9
1
7
4
3
2
4
7
8
2
7
3
6
5
1
4
2
9
8
8
2
6
9
3
1
7
4
This Sudoku Puzzle has 18 steps and it is solved using Full House, Naked Single techniques.
Naked Single
Explanation
Full House
Explanation
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