<s>
Strimko	B-Application
is	O
a	O
logic	O
number	O
puzzle	O
invented	O
by	O
the	O
Grabarchuk	O
Family	O
in	O
2008	O
.	O
</s>
<s>
All	O
Strimko	B-Application
puzzles	O
are	O
solvable	O
with	O
pure	O
logic	O
;	O
no	O
special	O
knowledge	O
is	O
required	O
.	O
</s>
<s>
Strimko	B-Application
uses	O
only	O
three	O
basic	O
elements	O
:	O
rows	O
,	O
columns	O
,	O
and	O
streams	O
.	O
</s>
<s>
Strimko	B-Application
challenges	O
were	O
handcrafted	O
by	O
Helen	O
,	O
Tanya	O
,	O
and	O
Peter	O
Grabarchuk	O
,	O
and	O
hundreds	O
of	O
original	O
Strimko	B-Application
puzzles	O
were	O
published	O
in	O
various	O
forms	O
and	O
platforms	O
:	O
Web	O
,	O
iOS	B-Application
,	O
PC/Mac	O
,	O
Kindle	B-General_Concept
,	O
paperback	O
.	O
</s>
