Weekly Extreme Sudoku Competition for May 29 to Jun 4

Number 506, 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
  8   9   2 1    
  2 1         9  
4               8
      1 3   7    
        5       6
    7   4 9      
1               3
  9         5 8  
      3   4   6