Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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