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

 

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