Weekly Extreme Sudoku Competition for Jan 21 to Jan 27

Number 905, Extreme
by Crosswords Ltd. December 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 3
6       9        
  2 3       9    
    8 4          
5       1 6     4
4         3 6    
    1       7 4  
        5       8
3 9           1