Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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