Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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