Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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