Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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