Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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