Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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