Langer's Sudoku Assistant

Invalid Sudoku!

Column 3 is invalid. Go back and make a different choice.

 

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

 

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