Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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