Weekly Extreme Sudoku Competition for Jun 5 to Jun 11

Number 507, 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
5         2 6   8
7     4   1      
1   3   8        
    4     3      
  7           2  
      5     7    
        4   1   2
      3   5      
8   1           5