Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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