Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. The top left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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