Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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