Langer's Sudoku Assistant

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