Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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