Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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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