Weekly Extreme Sudoku Competition for Dec 15 to Dec 21

Number 378, Extreme
by Crosswords Ltd. August 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 6   7    
          3      
  3   7 5       2
5       3       8
    2       9    
3       8       1
9       7     1  
      8          
    1   2 6 3   5