Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Go back and make a different choice.

 

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

 

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