Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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