Langer's Sudoku Assistant

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

 

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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