Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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