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