Weekly Extreme Sudoku Competition for Dec 18 to Dec 24

Number 535, Extreme
by Crosswords Ltd. January 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
    1     9     4
  7 6   4   3 8  
      3   6      
          7     3
    4   6   8    
5     1          
      6   2      
  9 5   7   1 2  
1     9     4