Langer's Sudoku Assistant

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

 

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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