Su Doku
Hard 1 - Answer
4
5
8
6
3
7
1
9
2
1
3
9
2
5
8
6
4
7
6
2
7
1
9
4
5
3
8
9
1
5
4
7
6
2
8
3
7
8
6
3
2
9
4
5
1
2
4
3
8
1
5
7
6
9
5
7
1
9
4
3
8
2
6
3
6
4
7
8
2
9
1
5
8
9
2
5
6
1
3
7
4
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