Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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