Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Go back and make a different choice.

 

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

 

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