Weekly Extreme Sudoku Competition for Apr 8 to Apr 14

Number 603, 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 2   1      
  5           8  
  4     5   1    
4       9     5 6
        3 4      
  8     1       3
    8   6     9  
  9           2  
      7   9 3