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