Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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