Weekly Extreme Killer Sudoku Competition for Feb 19 to Feb 25

Number 544, Extreme
by Crosswords Ltd. February puzzle packs Now Out!. Thanks for supporting our site.
All entries must be in by the end of Saturday, Feb 25 23:59 EST, USA

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
21
 
20
17
 
 
 
11
9
 
 
 
 
 
13
 
 
 
15
 
 
16
 
17
 
13
 
12
 
 
 
13
 
14
15
7
12
16
5
15
 
 
 
 
 
 
 
 
 
 
23
9
 
 
9
 
16
 
 
 
8
 
 
9
9
 
 
20
 
 
24
 
 
 
17
 
 
 
 
 
 

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