Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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