Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Column 7 is invalid. Go back and make a different choice.

 

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

 

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