Weekly Extreme Sudoku Competition for Jan 7 to Jan 13

Number 903, 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
  6   4       1  
        7   2    
          3     5
      3     5    
  2     6     8  
  4 8     9      
9   5 7          
    4   8       9
  8       1   4