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