Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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