Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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