Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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