Weekly Extreme Sudoku Competition for Dec 25 to Dec 31

Number 275, 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
  4   2   5     1
6         1     3
    8   3        
  5   3   2      
                 
    3 5   4   8  
        2   4    
7     1         2
8     4   9   1 5