Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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