Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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