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.

 

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

 

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