Weekly Extreme Sudoku Competition for Feb 17 to Feb 23

Number 648, Extreme
by Crosswords Ltd. February 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            
6       2        
  7   6     8 4  
  8       3 1    
3     2   7     8
    5 1       3  
  9 8     5 6 7  
2       9       4