Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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