Langer's Sudoku Assistant

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