Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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