Weekly Extreme Sudoku Competition for Oct 29 to Nov 4

Number 580, Extreme
by Crosswords Ltd. January 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
  5       4 1   8
        1     2 6
    7 8     4    
      3   8      
    9   4        
      5   9      
    3     6 9    
9 4     3        
7   8 9       3