Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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