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.

 

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

 

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