Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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