Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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