Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 1 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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