Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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