Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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