Weekly Extreme Sudoku Competition for Oct 8 to Oct 14

Number 577, 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
6           3   8
      7         4
  1     5     2  
5       9 1     6
      8   2 5    
9       7        
  5     6     8  
3         9      
4   1           5