Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. Go back and make a different choice.

 

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

 

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