Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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