Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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