Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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