Weekly Extreme Sudoku Competition for Apr 9 to Apr 15

Number 551, 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
  5       4   8 9
  7     3        
    6       1    
        8 3 5    
8 1   7   2   3  
    5 1 4        
    7       4    
        2     5  
  8   3       6