Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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