Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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