Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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