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.

 

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

 

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