Langer's Sudoku Assistant

Invalid Sudoku!

Column 3 is invalid. Go back and make a different choice.

 

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

 

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