Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. Go back and make a different choice.

 

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

 

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