Langer's Sudoku Assistant

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