Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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