Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

9
4
6
1
2
7
5
8
3
3
7
1
9
8
5
2
4
6
2
5
8
4
3
6
9
7
1
2
7
8
6
3
5
4
9
1
5
3
9
7
1
4
6
2
8
1
6
4
1  2  3
4  5  6
7  8  9
2
9
3
7
5
3
1
4
7
5
9
8
6
2
8
5
2
4
6
3
1
9
7
6
9
7
8
1
2
5
4
3

 

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