Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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