Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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