Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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