Langer's Sudoku Assistant

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

 

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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