8
6
3
2
1
5
7
5
9
5
9
7
8
3
6
1
2
4
2
2
4
7
9
4
8
3
6
6
8
7
1
3
4
5
9
2
2
5
3
6
8
9
4
7
1
1
4
9
5
7
2
3
6
8
8
2
1
3
5
6
4
7
1
7
4
5
9
1
2
3
6
8
9
1
3
4
8
7
2
5
1
This Sudoku Puzzle has 23 steps and it is solved using Full House, Naked Single techniques.
Naked Single
Explanation
Full House
Explanation
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