Weekly Extreme Sudoku Competition for Dec 4 to Dec 10

Number 533, 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
  2 6         8 4
8   4   6   5    
5                
  8       3 4    
      1   4      
    5 6       2  
                7
    3   5   9   1
7 6     4   3