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

 

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