Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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