Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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