Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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