Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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