Langer's Sudoku Assistant

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

 

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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