Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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