Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. The top left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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