Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 7 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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