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.

 

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

 

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