Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 3 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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