Weekly Extreme Sudoku Competition for Aug 21 to Aug 27

Number 257, Extreme
by Crosswords Ltd. August 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     9
    7 2   9 1    
        3     7  
7   2         6 5
                 
3 1         9   2
  9     1     4  
    3 6   4 2    
2     5