Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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