Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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