Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 2 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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