Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Go back and make a different choice.

 

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

 

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Take any Sudoku puzzle you are having trouble with -- or any one at all -- and enter the initial values. With each entry the proscribed options are eliminated for you

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