Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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