Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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