Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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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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