Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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