Weekly Extreme Sudoku Competition for Dec 2 to Dec 8

Number 63, 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
          4      
7 3           5 6
  4   3       9  
        9   3    
2               7
    5   6   1    
  9     4 7   3  
6             8 2
      6