Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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