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.

 

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

 

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