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