Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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