Weekly Extreme Sudoku Competition for Jan 14 to Jan 20

Number 591, 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
      8   9 3    
3   8   7   6    
2                
    1 3   4 5 8  
                 
  9 3 7   1      
                1
    4   6   8   2
7   6 9   8