Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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