Weekly Extreme Sudoku Competition for Jan 18 to Jan 24

Number 6343, 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
    9 1       5  
  6             7
  1     2        
  9     3        
    7 5   8 3    
        9     4  
        6     3  
2             6 5
3 8       5 4   9