Weekly Extreme Sudoku Competition for Dec 21 to Dec 27

Number 431, 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
      5 6        
    4       6   9
7       3   1    
          6 3 4  
    9       2    
  2 6 3 7        
1       9       3
5   2       8    
        4 5