Weekly Extreme Sudoku Competition for May 21 to May 27

Number 870, Extreme
by Crosswords Ltd. December 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
9       2       5
                6
  6   9       7  
2     4 9 8     1
    4       9    
1     3   7     2
  7       4   1  
              3  
4       8       9