Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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