Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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