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.

 

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

 

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