Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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