Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. Go back and make a different choice.

 

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

 

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