Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Go back and make a different choice.

 

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

 

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