Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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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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