Weekly Extreme Sudoku Competition for Feb 4 to Feb 10

Number 594, 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
    1     6 5    
8                
6   5 9 1 3      
        9     7 1
  9 7       3 8  
1 6     8        
      1 4 8 7   2
                5
    4 2     8