Weekly Extreme Sudoku Competition for Jun 17 to Jun 23

Number 300, Extreme
by Crosswords Ltd. August 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   6  
8         9 3   5
  3     7     4  
    3   5        
7     8   1     6
        2   1    
  4 2   3     7  
9   5           3
  6