Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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