Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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