Weekly Extreme Sudoku Competition for Jan 29 to Feb 4

Number 854, Extreme
by Crosswords Ltd. December 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
  5   2          
    3 9   6 8    
8   9   3       7
    8       9 2  
      8   9      
  6 5       4    
3       4   5   8
    1 5   3 2    
          8   1