Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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