Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 2 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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