Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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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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