Weekly Extreme Killer Sudoku Competition for Oct 21 to Oct 27

Number 631, Extreme
by Crosswords Ltd. October puzzle packs Now Out!. Thanks for supporting our site.
All entries must be in by the end of Saturday, Oct 27 23:59 EST, USA

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
9
 
21
 
9
 
9
 
3
15
20
 
17
 
10
9
 
 
 
 
 
 
 
 
24
 
 
 
 
17
19
19
 
 
17
 
9
 
 
 
 
 
20
 
 
 
 
17
 
 
 
 
12
21
17
 
 
15
10
 
22
 
 
10
13
 
 
 
 
 
 
 
 
5
 
11
 
 
 
5