Weekly Extreme Sudoku Competition for Apr 21 to Apr 27

Number 657, Extreme
by Crosswords Ltd. January 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       3
    5     9 7    
  3   1   2   9  
    6         2 8
                 
7 4         3    
  1   7       6 4
    4 6     5    
9       8