Weekly Extreme Sudoku Competition for Feb 12 to Feb 18

Number 543, Extreme
by Crosswords Ltd. January 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
4     9 3     8  
8         6     3
            5 1  
      4   5 3    
9       1       7
    1 2   9      
  6 8            
1     3         5
  9     8 7     2