Weekly Extreme Sudoku Competition for May 29 to Jun 4

Number 819, Extreme
by Crosswords Ltd. April 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 9       7      
    2       1    
3       6   2 9  
  8   3 9 6      
                6
      7 1 5   4  
  5 3   4       1
    8       4    
      2       5 3