Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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