Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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