Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 3 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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