Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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