Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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