<s>
Anti-computer	B-General_Concept
tactics	I-General_Concept
are	O
methods	O
used	O
by	O
humans	O
to	O
try	O
to	O
beat	O
computer	O
opponents	O
at	O
various	O
games	O
,	O
especially	O
in	O
board	O
games	O
such	O
as	O
chess	B-Application
and	O
Arimaa	O
.	O
</s>
<s>
This	O
will	O
frequently	O
involve	O
selecting	O
moves	O
that	O
appear	O
suboptimal	O
in	O
the	O
short	O
term	O
in	O
order	O
to	O
exploit	O
known	O
weaknesses	O
in	O
the	O
way	O
computer	O
players	O
evaluate	B-General_Concept
positions	I-General_Concept
.	O
</s>
<s>
One	O
example	O
of	O
the	O
use	O
of	O
anti-computer	B-General_Concept
tactics	I-General_Concept
was	O
Brains	B-General_Concept
in	I-General_Concept
Bahrain	I-General_Concept
,	O
an	O
eight-game	O
chess	B-Application
match	O
between	O
human	O
chess	B-Application
grandmaster	O
,	O
and	O
then	O
World	O
Champion	O
,	O
Vladimir	O
Kramnik	O
and	O
the	O
computer	O
program	O
Deep	B-Application
Fritz	I-Application
7	I-Application
,	O
held	O
in	O
October	O
2002	O
.	O
</s>
<s>
In	O
the	O
1997	O
Deep	B-General_Concept
Blue	I-General_Concept
versus	O
Garry	O
Kasparov	O
match	O
,	O
Kasparov	O
played	O
an	O
anti-computer	O
tactic	O
move	O
at	O
the	O
start	O
of	O
the	O
game	O
to	O
get	O
Deep	B-General_Concept
Blue	I-General_Concept
out	O
of	O
its	O
opening	O
book	O
.	O
</s>
