Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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