Weekly Extreme Sudoku Competition for Mar 9 to Mar 15

Number 77, 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
  6   3          
3   1   8     9  
8     6 7       1
  3         1    
7 5           8 2
    6         4  
6       9 8     4
  4     3   8   9
          5   6