Weekly Extreme Sudoku Competition for Jul 29 to Aug 4

Number 619, 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
2         3 8   1
  7           6  
    9     1 4    
    5   6        
    7 3 9 4 6    
        5   7    
    4 8     9    
  6           1  
9   1 7         4