Weekly Extreme Sudoku Competition for Jul 9 to Jul 15

Number 877, 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
7     2   1      
    3       2    
  9 4   5        
      1       4 8
6     4   3     7
4 8       5      
        4     6  
    7       8    
      9   7   1 2