Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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