Weekly Extreme Sudoku Competition for Dec 23 to Dec 29

Number 66, 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
    2     5      
                7
      1 8 7 9    
  9 7   3     1 8
4               6
  2     5     4  
    6     1      
5               9
      6     3