Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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