<s>
is	O
a	O
puzzle-platform	O
game	O
designed	O
by	O
Tetris-creator	O
Alexey	O
Pajitnov	O
and	O
published	O
by	O
Nintendo	O
for	O
the	O
Famicom	B-Device
Disk	I-Device
System	I-Device
in	O
1990	O
.	O
</s>
<s>
The	O
game	O
is	O
based	O
around	O
the	O
concept	O
of	O
how	O
a	O
knight	O
piece	O
is	O
moved	O
in	O
the	O
game	O
of	O
chess	B-Application
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
knight	O
chess	B-Application
piece	O
that	O
is	O
constantly	O
jumping	O
and	O
must	O
continually	O
choose	O
which	O
of	O
the	O
possible	O
legal	O
moves	O
to	O
make	O
before	O
the	O
knight	O
lands	O
back	O
on	O
the	O
board	O
.	O
</s>
<s>
Falling	O
in	O
a	O
hole	O
will	O
result	O
in	O
a	O
game	B-Application
over	I-Application
.	O
</s>
<s>
The	O
main	O
objective	O
in	O
Knight	B-Device
Move	I-Device
is	O
to	O
continue	O
this	O
cycle	O
,	O
despite	O
the	O
increasing	O
game	O
speed	O
,	O
and	O
reach	O
the	O
highest	O
score	O
possible	O
.	O
</s>
