Weekly Extreme Sudoku Competition for Jun 4 to Jun 10

Number 872, 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
      5     4   6
    7         8  
    3     2 5    
        1 7     9
  2           6  
1     6 4        
    8 1   5      
  7              
6   2       7