Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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