Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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