Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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