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

 

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