Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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