Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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