Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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