Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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