Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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