Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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