Weekly Extreme Sudoku Competition for Dec 18 to Dec 24

Number 848, Extreme
by Crosswords Ltd. April 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       6      
  7       1   8 4
3         4     7
  5 4     2 9 1  
6 2             8
8 6   5       7  
      6       5  
        3