Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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