3
5
8
2
1
9
6
4
7
1
9
6
5
8
4
2
3
2
2
4
4
3
7
6
9
1
8
9
8
4
1
6
2
7
3
3
3
7
5
8
4
9
2
6
1
6
2
1
5
3
7
4
8
9
5
9
1
8
7
6
4
2
1
6
2
7
4
1
3
9
5
8
1
9
3
8
5
5
7
6
2
This Sudoku Puzzle has 22 steps and it is solved using Full House, Naked Single techniques.
Naked Single
Explanation
Full House
Explanation
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