Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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