Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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