Weekly Extreme Sudoku Competition for Apr 16 to Apr 22

Number 552, 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
7       1       9
      3   4 1    
  2   9       8  
5             6  
  3     5     4  
  6 4           7
  8       7   3  
    2 8   1      
        6       4