Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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