Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. Go back and make a different choice.

 

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

 

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