Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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