Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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