Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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