Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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