Weekly Extreme Sudoku Competition for Jan 15 to Jan 21

Number 278, Extreme
by Crosswords Ltd. August 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   4  
    8 7 4       9
    4   3   1    
  6 3       7    
5               2
              9  
    2   7   3    
6       9 5 2    
  7   4