Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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