Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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