Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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