Weekly Extreme Sudoku Competition for May 6 to May 12

Number 607, 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 7   5      
    4   9 6      
      2       4  
  5 9       8 7  
4   3       9   5
  7 6       2 1  
  9       8      
        2   1    
      3   4 7