Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 2 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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