<s>
Chess	B-General_Concept
Engines	I-General_Concept
Grand	I-General_Concept
Tournament	I-General_Concept
,	O
also	O
known	O
as	O
CEGT	B-General_Concept
,	O
is	O
an	O
organization	O
that	O
tests	O
computer	B-Application
chess	I-Application
software	O
by	O
playing	O
chess	B-Application
engines	I-Application
against	O
one	O
another	O
and	O
publishing	O
a	O
ratings	O
table	O
.	O
</s>
<s>
CEGT	B-General_Concept
routinely	O
tests	O
chess	B-Application
engines	I-Application
in	O
various	O
time	O
controls	O
such	O
as	O
40/4	O
(	O
40	O
moves	O
in	O
4	O
minutes	O
,	O
repeating	O
)	O
,	O
40/20	O
(	O
40	O
moves	O
in	O
20	O
minutes	O
,	O
repeating	O
)	O
,	O
and	O
40/120	O
(	O
40	O
moves	O
in	O
120	O
minutes	O
,	O
repeating	O
)	O
.	O
</s>
<s>
The	O
40/120	O
matches	O
are	O
one	O
of	O
the	O
best	O
computer-chess	O
games	O
freely	O
available	O
online	O
.	O
</s>
<s>
Instead	O
of	O
starting	O
with	O
a	O
fresh	O
board	O
,	O
CEGT	B-General_Concept
make	O
the	O
engines	O
start	O
from	O
a	O
common	O
chess	B-Application
opening	O
position	O
.	O
</s>
<s>
Games	O
include	O
SMP	B-Operating_System
testing	O
.	O
</s>
