Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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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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