Weekly Extreme Sudoku Competition for Dec 17 to Dec 23

Number 587, Extreme
by Crosswords Ltd. November 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
  1 7     8 2    
  8       3     1
9       1       8
      5       2  
  3     7     6  
  7       9      
1       5       6
7     9       5  
    2       1 8