Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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