Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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