Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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