Langer's Sudoku Assistant

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

 

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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