Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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