Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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