Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 3 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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