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.

 

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

 

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