Weekly Extreme Sudoku Competition for Jan 17 to Jan 23

Number 748, 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
    5   6        
  6       7   3  
  4 9       8    
    2   7 5 1    
  3   4   9   8  
    4 6 3   2    
    6       3 1  
  1           5  
        9   6