Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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