Weekly Extreme Sudoku Competition for May 10 to May 16

Number 138, Extreme
by Crosswords Ltd. October 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
          7      
4 6 9         8  
      9   6 5   1
2 3              
  7 4   5   8 6  
              4 3
8   2 5   9      
  9         6 5 8
      8