Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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