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

 

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