Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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