Weekly Extreme Sudoku Competition for Jun 21 to Jun 27

Number 144, 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
  8   4   7   3  
9       5        
    6 2     8   1
8     7          
                 
    1     6     2
6   2     4 7   8
                 
  7   8   2   1