Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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