Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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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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