Langer's Sudoku Assistant

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