Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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