Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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