Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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