Weekly Extreme Sudoku Competition for Oct 2 to Oct 8

Number 524, 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
    6   9       1
2             9  
  5 9     8 2 6  
          9   5  
    8       4    
  4   1   7      
  6 5 9     8 7  
  3              
8       5   3