Weekly Extreme Sudoku Competition for Jan 29 to Feb 4

Number 541, Extreme
by Crosswords Ltd. October 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  
3   6     7 4    
      9         2
9   3     8     5
4               6
      7     1   4
5     4   1      
    7 3     6    
  4   2