Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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