Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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