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