Weekly Extreme Sudoku Competition for Jan 22 to Jan 28

Number 540, Extreme
by Crosswords Ltd. November 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
6     3         2
          9   7  
    9   6   8    
          2 5   8
    8   5   4    
5   2 1          
    6   4   3    
  7   5          
4 9       1     5