Weekly Extreme Sudoku Competition for Dec 3 to Dec 9

Number 585, 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
      9     1    
  1   7   3   4 9
            6 2  
9     6   4      
4               7
      2         4
6 9 3            
  5   3   2   1  
    8     9