Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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