Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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