Weekly Extreme Sudoku Competition for Jan 27 to Feb 2

Number 71, Extreme
by Crosswords Ltd. November 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
2     1   9 4    
  8       3      
    7   8        
9 2   5          
6               1
          4   2 5
        2   8    
      9       7  
    8 4   1     3