Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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