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

 

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