Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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