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.

 

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

 

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