Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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