Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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