Weekly Extreme Sudoku Competition for Aug 21 to Aug 27

Number 831, 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
5       6   8   2
    3 2   1      
    4            
  9       7   2  
4               5
  6   3     4 8  
            9    
      7   2 1    
7   1   3 9     4