Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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