Langer's Sudoku Assistant

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

 

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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