<s>
Patashnik	O
used	O
a	O
computer-assisted	B-Algorithm
proof	I-Algorithm
that	O
consumed	O
1500	O
hours	O
of	O
computer	O
time	O
.	O
</s>
<s>
The	O
game	O
was	O
solved	O
again	O
by	O
Victor	O
Allis	O
using	O
proof-number	B-Algorithm
search	I-Algorithm
.	O
</s>
<s>
The	O
earliest	O
of	O
these	O
used	O
console	O
lights	O
and	O
switches	B-Device
,	O
text	O
terminals	O
,	O
or	O
similar	O
interaction	O
:	O
the	O
human	O
player	O
would	O
enter	O
moves	O
numerically	O
(	O
for	O
example	O
,	O
using	O
"	O
4	O
2	O
3	O
"	O
for	O
fourth	O
level	O
,	O
second	O
row	O
,	O
third	O
column	O
)	O
and	O
the	O
program	O
would	O
respond	O
similarly	O
,	O
as	O
graphics	O
displays	O
were	O
uncommon	O
.	O
</s>
<s>
A	O
program	O
written	O
for	O
the	O
IBM	B-Device
650	I-Device
used	O
front	O
panel	O
switches	B-Device
and	O
lights	O
for	O
the	O
user	O
interface	O
.	O
</s>
<s>
The	O
program	O
was	O
written	O
in	O
assembler	O
language	O
for	O
the	O
TX-0	B-Device
computer	O
.	O
</s>
<s>
An	O
implementation	O
in	O
Fortran	B-Application
was	O
written	O
by	O
Robert	O
K	O
.	O
Louden	O
and	O
presented	O
,	O
with	O
an	O
extensive	O
description	O
of	O
its	O
design	O
,	O
in	O
his	O
book	O
Programming	O
the	O
IBM	O
1130	O
and	O
1800	O
.	O
</s>
<s>
Atari	O
released	O
a	O
graphical	O
version	O
of	O
the	O
game	O
for	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
console	O
and	O
Atari	B-Device
8-bit	I-Device
computers	I-Device
in	O
1978	O
.	O
</s>
<s>
The	O
program	O
was	O
written	O
by	O
Carol	O
Shaw	O
,	O
who	O
went	O
on	O
to	O
greater	O
fame	O
as	O
the	O
creator	O
of	O
Activision	O
's	O
River	B-Application
Raid	I-Application
.	O
</s>
<s>
Three-dimensional	O
tic-tac-toe	O
on	O
a	O
4x4x4	O
board	O
(	O
optionally	O
3x3x3	O
)	O
was	O
included	O
in	O
the	O
Microsoft	B-Application
Windows	I-Application
Entertainment	I-Application
Pack	I-Application
in	O
the	O
1990s	O
under	O
the	O
name	O
TicTactics	O
.	O
</s>
<s>
In	O
2010	O
,	O
Microsoft	O
made	O
the	O
game	O
available	O
on	O
its	O
Game	B-Device
Room	I-Device
service	O
for	O
its	O
Xbox	B-Operating_System
360	I-Operating_System
console	O
.	O
</s>
<s>
A	O
program	O
library	O
named	O
Qubist	O
,	O
and	O
front-end	O
for	O
the	O
GTK	B-Application
2	I-Application
window	O
library	O
are	O
a	O
project	O
on	O
SourceForge	O
.	O
</s>
