Weekly Extreme Sudoku Competition for Jun 20 to Jun 26

Number 770, Extreme
by Crosswords Ltd. October 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   5    
      9         7
2             3 6
    3 8     4    
  8     1     5  
    2     5 6    
9 2     7       4
1         4      
    5 2