Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 7 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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