Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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