Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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