Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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