Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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