Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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