Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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