Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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