Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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