Weekly Extreme Sudoku Competition for May 15 to May 21

Number 504, 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
      4     8   7
              9  
5 3     9     6  
2     7 8 6     1
                 
1     2   9     6
  8     3     5 9
  5              
9   1     2 4