Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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