Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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