Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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