Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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