<s>
HIARCS	B-Application
is	O
a	O
proprietary	B-Application
UCI	B-General_Concept
chess	B-Application
engine	I-Application
developed	O
by	O
Mark	O
Uniacke	O
.	O
</s>
<s>
Because	O
Hiarcs	B-Application
is	O
written	O
portable	O
in	O
C	B-Language
,	O
it	O
is	O
available	O
on	O
multiple	O
platforms	O
such	O
as	O
Pocket	B-Device
PC	I-Device
,	O
Palm	B-Operating_System
OS	I-Operating_System
,	O
PDAs	B-Application
,	O
iOS	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
HIARCS	B-Application
opening	O
book	O
authors	O
over	O
time	O
were	O
Eric	O
Hallsworth	O
,	O
Sebastian	O
Böhme	O
and	O
Harvey	O
Williamson	O
,	O
who	O
is	O
also	O
operating	O
HIARCS	B-Application
regularly	O
at	O
various	O
computer	O
chess	O
tournaments	O
.	O
</s>
<s>
HIARCS	B-Application
author	O
Mark	O
Uniacke	O
said	O
in	O
a	O
2011	O
video	O
interview	O
that	O
one	O
of	O
his	O
current	O
priorities	O
in	O
development	O
is	O
improving	O
HIARCS	B-Application
to	O
play	O
in	O
a	O
more	O
"	O
human-like	O
fashion	O
"	O
at	O
different	O
Elo	O
strengths	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
HIARCS	B-Application
was	O
written	O
in	O
1980	O
in	O
PDP-11	O
Basic	O
,	O
when	O
Mark	O
Uniacke	O
was	O
only	O
15	O
years	O
old	O
.	O
</s>
<s>
At	O
the	O
end	O
of	O
the	O
80s	O
,	O
HIARCS	B-Application
was	O
rewritten	O
in	O
C	B-Language
,	O
and	O
soon	O
competed	O
in	O
computer	O
chess	O
tournaments	O
.	O
</s>
<s>
In	O
1991	O
,	O
Hiarcs	B-Application
went	O
commercial	O
and	O
Hiarcs	B-Application
1.0	O
was	O
released	O
for	O
PCs	O
and	O
the	O
MS-DOS	B-Application
operating	O
system	O
.	O
</s>
<s>
In	O
1996	O
,	O
Hiarcs	B-Application
4.0	O
became	O
the	O
first	O
version	O
to	O
be	O
marketed	O
by	O
Chessbase	O
sold	O
inside	O
the	O
Fritz	B-Application
GUI	B-Application
.	O
</s>
<s>
Version	O
11	O
,	O
the	O
first	O
version	O
to	O
support	O
multiprocessing	B-Operating_System
,	O
was	O
released	O
in	O
December	O
2006	O
.	O
</s>
<s>
HIARCS	B-Application
12.1	O
and	O
13	O
are	O
the	O
engines	O
in	O
Pocket	B-Application
Fritz	I-Application
by	O
Chessbase	O
.	O
</s>
<s>
Since	O
Version	O
14	O
,	O
released	O
in	O
August	O
2012	O
,	O
HIARCS	B-Application
has	O
been	O
sold	O
along	O
with	O
its	O
own	O
GUI	B-Application
(	O
Chess	O
Explorer	O
)	O
available	O
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Windows	O
.	O
</s>
<s>
HIARCS	B-Application
has	O
won	O
numerous	O
computer	O
and	O
human	O
tournaments	O
.	O
</s>
<s>
In	O
April	O
1997	O
,	O
HIARCS	B-Application
6.0	O
became	O
the	O
first	O
PC	O
chess	B-Application
program	I-Application
to	O
win	O
a	O
match	O
played	O
at	O
tournament	O
time	O
controls	O
over	O
a	O
FIDE	O
International	O
Master	O
.	O
</s>
<s>
In	O
the	O
same	O
year	O
,	O
HIARCS	B-Application
went	O
on	O
to	O
win	O
the	O
Godesberg	O
Open	O
ahead	O
of	O
Grandmasters	O
and	O
International	O
Masters	O
.	O
</s>
<s>
In	O
January	O
2003	O
,	O
HIARCS	B-Application
played	O
a	O
four-game	O
match	O
against	O
Grandmaster	O
Evgeny	O
Bareev	O
,	O
world	O
number	O
8	O
at	O
the	O
time	O
.	O
</s>
<s>
Since	O
2005	O
,	O
HIARCS	B-Application
has	O
been	O
tested	O
to	O
be	O
the	O
strongest	O
chess	B-Application
program	I-Application
available	O
on	O
a	O
handheld	O
device	O
.	O
</s>
<s>
It	O
is	O
the	O
top	O
handheld	O
on	O
the	O
SSDF	O
rating	O
list	O
,	O
and	O
was	O
considered	O
the	O
strongest	O
engine	O
in	O
a	O
comprehensive	O
review	O
of	O
63	O
handheld	O
chess	B-Application
programs	I-Application
.	O
</s>
<s>
In	O
December	O
2007	O
,	O
HIARCS	B-Application
won	O
the	O
17th	O
International	O
Paderborn	O
Computer	O
Chess	O
Championship	O
,	O
and	O
after	O
the	O
disqualification	O
of	O
Rybka	B-Application
,	O
HIARCS	B-Application
was	O
placed	O
first	O
at	O
the	O
2008	O
World	O
Computer	O
Chess	O
Championship	O
.	O
</s>
<s>
Pocket	B-Application
Fritz	I-Application
4	O
(	O
which	O
uses	O
the	O
HIARCS	B-Application
chess	B-Application
engine	I-Application
)	O
won	O
the	O
Copa	O
Mercosur	O
(	O
a	O
category	O
6	O
tournament	O
)	O
in	O
Buenos	O
Aires	O
,	O
Argentina	O
with	O
9	O
wins	O
and	O
1	O
draw	O
on	O
August	O
4	O
–	O
14	O
,	O
2009	O
,	O
achieving	O
a	O
performance	O
rating	O
of	O
2898	O
while	O
running	O
on	O
the	O
HTC	O
Touch	O
HD	O
mobile	O
phone	O
.	O
</s>
<s>
HIARCS	B-Application
plays	O
in	O
a	O
simultaneous	O
exhibition	O
,	O
amongst	O
other	O
chess	B-Application
engines	I-Application
,	O
against	O
Grandmaster	O
Viswanathan	O
Anand	O
.	O
</s>
<s>
Zappa	O
traps	O
HIARCS	B-Application
's	O
queen	O
but	O
ends	O
up	O
losing	O
.	O
</s>
<s>
HIARCS	B-Application
sacrifices	O
a	O
piece	O
for	O
positional	O
gain	O
.	O
</s>
