Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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