<s>
The	O
ChessMachine	B-General_Concept
was	O
a	O
chess	B-Application
computer	I-Application
sold	O
between	O
1991	O
and	O
1995	O
by	O
TASC	O
(	O
The	O
Advanced	O
Software	O
Company	O
)	O
.	O
</s>
<s>
It	O
was	O
unique	O
at	O
the	O
time	O
for	O
incorporating	O
both	O
an	O
ARM2	B-Architecture
coprocessor	B-General_Concept
for	O
the	O
chess	B-Application
engine	I-Application
on	O
an	O
ISA	B-Architecture
card	I-Architecture
which	O
plugged	O
into	O
an	O
IBM	B-Device
PC	I-Device
and	O
a	O
software	O
interface	O
running	O
on	O
the	O
PC	O
to	O
display	O
a	O
chess	O
board	O
and	O
control	O
the	O
engine	O
.	O
</s>
<s>
The	O
ISA	B-Architecture
card	I-Architecture
was	O
sold	O
with	O
a	O
CPU	O
running	O
at	O
either	O
16MHz	O
or	O
32MHz	O
,	O
and	O
128	O
KB	O
,	O
512	O
KB	O
,	O
or	O
1	O
MB	O
of	O
onboard	O
memory	O
for	O
transposition	B-General_Concept
tables	I-General_Concept
.	O
</s>
<s>
Two	O
engines	O
were	O
sold	O
with	O
the	O
card	O
:	O
The	O
King	O
by	O
Johann	O
de	O
Koning	O
and	O
Gideon	B-Application
by	O
Ed	B-Application
Schröder	I-Application
.	O
</s>
<s>
Gideon	B-Application
was	O
famed	O
for	O
winning	O
two	O
World	O
Computer	O
Chess	O
Championships	O
on	O
this	O
hardware	O
.	O
</s>
<s>
The	O
King	O
later	O
became	O
the	O
engine	O
used	O
in	O
the	O
popular	O
Chessmaster	O
series	O
of	O
chess	B-Application
programs	I-Application
.	O
</s>
<s>
There	O
were	O
two	O
models	O
,	O
the	O
R30	O
and	O
R40	O
,	O
running	O
at	O
30MHz	O
and	O
40MHz	O
respectively	O
,	O
and	O
having	O
512	O
KB	O
and	O
1	O
MB	O
of	O
transposition	B-General_Concept
tables	I-General_Concept
,	O
respectively	O
.	O
</s>
<s>
They	O
were	O
only	O
sold	O
with	O
The	O
King	O
chess	B-Application
engine	I-Application
.	O
</s>
<s>
This	O
was	O
the	O
end	O
of	O
the	O
era	O
of	O
strong	O
dedicated	O
chess	B-Application
computers	I-Application
,	O
and	O
these	O
two	O
models	O
are	O
acknowledged	O
as	O
the	O
strongest	O
dedicated	O
chess	B-Application
computers	I-Application
that	O
were	O
ever	O
sold	O
.	O
</s>
<s>
According	O
to	O
the	O
SSDF	O
rating	O
list	O
,	O
the	O
R30	O
held	O
its	O
own	O
against	O
its	O
contemporary	O
programs	O
running	O
a	O
Pentium-90MHz	O
and	O
won	O
against	O
other	O
dedicated	O
units	O
.	O
</s>
