Weekly Extreme Sudoku Competition for Aug 21 to Aug 27

Number 518, Extreme
by Crosswords Ltd. November puzzle packs Now Out!. Thanks for supporting our site.
Future Puzzle - will be submitted on the relevant day
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
  1   9   3      
  8 3     4   5  
9   4            
    8   6     2  
  3   4   2   8  
  2     9   1    
            5   8
  9   7     2 1  
      1   9   4