Weekly Extreme Sudoku Competition for Dec 27 to Jan 2

Number 745, 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
        9     3 5
      2   3 6    
9               7
    4   8        
2 1   4       6 8
        7   4    
8               6
  5 2 7   8      
3 6     1