Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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