Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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