Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 1 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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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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