Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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