Weekly Extreme Sudoku Competition for Aug 26 to Sep 1

Number 623, 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
6 7 1           8
      2   8      
8       7     4 1
3     8         7
  4           3  
9         3     5
5 9     3       4
      7   9      
7           1 9 6