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