<s>
REBEL	B-Application
was	O
a	O
world	O
champion	O
chess	B-Application
program	I-Application
developed	O
by	O
Ed	B-Application
Schröder	I-Application
.	O
</s>
<s>
Development	O
of	O
REBEL	B-Application
started	O
in	O
1980	O
on	O
a	O
TRS-80	B-Device
,	O
and	O
it	O
was	O
ported	O
many	O
times	O
to	O
dedicated	O
hardware	O
and	O
the	O
fastest	O
microprocessors	B-Architecture
of	O
the	O
day	O
:	O
</s>
<s>
1980s	O
–	O
Running	O
on	O
a	O
TRS-80	B-Device
,	O
Apple	B-Device
II	I-Device
,	O
and	O
inside	O
of	O
Mephisto	B-General_Concept
brand	O
dedicated	O
chess	B-Application
computers	I-Application
,	O
it	O
won	O
the	O
Dutch	O
open	O
computer	O
chess	O
championship	O
four	O
times	O
.	O
</s>
<s>
1991	O
–	O
Ported	O
to	O
the	O
ARM	B-Architecture
ChessMachine	B-General_Concept
and	O
named	O
Gideon	O
,	O
it	O
won	O
the	O
World	O
Microcomputer	O
Chess	O
Championship	O
.	O
</s>
<s>
1992	O
–	O
Gideon	O
won	O
the	O
World	O
Computer	O
Chess	O
Championship	O
,	O
the	O
first	O
time	O
a	O
microprocessor	B-Architecture
came	O
ahead	O
of	O
a	O
field	O
of	O
mainframes	B-Architecture
,	O
supercomputers	B-Architecture
,	O
and	O
custom	O
chess	O
hardware	O
.	O
</s>
<s>
1997	O
–	O
REBEL	B-Application
won	O
a	O
match	O
with	O
GM	O
Arthur	O
Yusupov	O
10.5	O
–	O
6.5	O
,	O
the	O
first	O
successful	O
challenge	O
of	O
a	O
chess	O
grandmaster	O
by	O
a	O
commercial	O
program	O
.	O
</s>
<s>
1998	O
–	O
REBEL	B-Application
won	O
a	O
match	O
with	O
GM	O
Viswanathan	O
Anand	O
5	O
–	O
3	O
(	O
but	O
lost	O
0.5	O
–	O
1.5	O
in	O
the	O
standard	O
time	O
control	O
section	O
of	O
the	O
match	O
)	O
.	O
</s>
<s>
2004	O
–	O
Ed	B-Application
Schröder	I-Application
retired	O
,	O
releasing	O
the	O
last	O
version	O
of	O
REBEL	B-Application
as	O
the	O
freeware	B-License
chess	B-Application
engine	I-Application
Pro	O
Deo	O
.	O
</s>
