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.

 

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

 

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