Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 4 is invalid. Go back and make a different choice.

 

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

 

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