Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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