Langer's Sudoku Assistant

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