Weekly Extreme Sudoku Competition for Nov 26 to Dec 2

Number 584, Extreme
by Crosswords Ltd. October 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   6  
        2   9    
6 9   1   7   8  
    4       2 1  
5               3
  3 2       4    
  1   4       2 9
    7   6        
      3         8