Weekly Extreme Sudoku Competition for Jan 24 to Jan 30

Number 488, Extreme
by Crosswords Ltd. December 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     9 6
      3   1      
  2     7   4    
3   7       5    
      9   7      
    8   5   7   9
    6   3     2  
      4   6      
4 5 3   8