Weekly Extreme Sudoku Competition for Dec 17 to Dec 23

Number 13, Extreme
by Crosswords Ltd. August 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
2               5
  6           8  
  4   3   6   7  
5     6   7   2 1
                 
4 2   9   5     3
  3   1   2   9  
  8           3  
6               7