Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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