Weekly Extreme Sudoku Competition for Jun 9 to Jun 15

Number 664, Extreme
by Crosswords Ltd. February 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       7
  6       3   8  
4   7           1
    8 4          
6 1           9 8
          9 5    
2     8         9
  5   2       1  
1       9