Weekly Extreme Killer Sudoku Competition for Jul 21 to Jul 27

Number 670, Extreme
by Crosswords Ltd. July puzzle packs Now Out!. Thanks for supporting our site.
All entries must be in by the end of Saturday, Jul 27 23:59 EST, USA

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
19
21
 
 
 
13
7
 
16
 
 
 
6
 
 
18
 
 
15
 
13
 
8
 
 
 
 
 
16
 
 
23
 
12
 
7
15
14
 
 
 
13
 
 
 
 
11
 
 
 
19
 
 
20
14
16
13
 
 
9
 
 
 
 
 
 
3
15
 
17
 
 
 
14
 
 
18
 
 
 
 

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