Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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