Weekly Extreme Sudoku Competition for Sep 25 to Oct 1

Number 523, Extreme
by Crosswords Ltd. September puzzle packs Now Out!. Thanks for supporting our site.

All entries must be in by the end of Saturday, Oct 1 23:59 EST, USA
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
5                
  6 2   3   8    
  8         2 6  
6   5     7      
          2   7  
      4 8   3    
  5 1         8  
    8   7   4 9  
                7