Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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