Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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