Weekly Extreme Sudoku Competition for Jan 2 to Jan 8

Number 798, 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
  7 1 2 6        
    9 3       7  
  4   7          
6 3             8
    4       5    
              2 6
      8   2      
  1       5 4    
        3 1 8 9