Weekly Extreme Sudoku Competition for Apr 17 to Apr 23

Number 813, Extreme
by Crosswords Ltd. December 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
    2            
  3       7 5 4  
5 6           2 9
    6   1     5 4
        8        
9 7     4   6    
4 9           1 5
  5 1 2       6  
            4