Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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