Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. Go back and make a different choice.

 

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

 

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