Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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