Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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