Langer's Sudoku Assistant

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