Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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