Weekly Extreme Sudoku Competition for Feb 12 to Feb 18

Number 856, 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
  3 6 7     1 8  
    9 2   5 3    
                 
6 7             1
    1       9    
9             5 7
        6        
      4   1 7    
  8 4     3   2