Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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