Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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