Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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