Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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