Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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