Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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