Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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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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