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.

 

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

 

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