Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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