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

 

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