Weekly Extreme Sudoku Competition for Dec 12 to Dec 18

Number 795, 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
    9       4   1
  6     4        
7   1     9     3
  3 7     2 6 9  
                 
  2 4 5     1 3  
4     8     5   6
        9     4  
1   8       3