Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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