Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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