Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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