Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 1 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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