Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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