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

 

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