Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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