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

 

Start Over

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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