Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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