Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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