Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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