Langer's Sudoku Assistant

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

 

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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