Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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