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.

 

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

 

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