Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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