Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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