Weekly Extreme Sudoku Competition for Dec 10 to Dec 16

Number 899, 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
3   2       4 1  
8 7       5     3
                 
  9   7   3     5
    7   8   3    
5     2   1   7  
                 
4     3       8 9
  8 9       6   7