Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. Go back and make a different choice.

 

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

 

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