Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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