Weekly Extreme Sudoku Competition for Jul 21 to Jul 27

Number 670, Extreme
by Crosswords Ltd. May 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
      8   9     3
5         3      
    6       9   2
2   8   1   3    
    1       6    
      5 2   4    
1   3       8    
                9
4     7   1