Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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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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