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

 

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