Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. Go back and make a different choice.

 

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

 

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