<s>
Spider	B-Application
Solitaire	I-Application
,	O
also	O
known	O
as	O
Microsoft	B-Application
Spider	I-Application
Solitaire	I-Application
(	O
Spider	O
in	O
the	O
About	O
box	O
in	O
some	O
versions	O
)	O
,	O
is	O
a	O
solitaire	B-Application
(	O
NA	O
)	O
/patience	O
(	O
EU	O
)	O
card	O
game	O
that	O
is	O
included	O
in	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
,	O
it	O
was	O
the	O
most	O
played	O
game	O
on	O
Windows	B-Application
PCs	I-Application
,	O
surpassing	O
the	O
shorter	O
and	O
less	O
challenging	O
Klondike-based	O
Windows	B-Application
Solitaire	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
first	O
included	O
as	O
part	O
of	O
Windows	B-Device
98	I-Device
's	O
Microsoft	B-Application
Plus	I-Application
!	I-Application
</s>
<s>
Spider	B-Application
Solitaire	I-Application
was	O
not	O
included	O
in	O
Windows	B-Application
2000	I-Application
,	O
but	O
was	O
added	O
to	O
Windows	B-Device
Me	I-Device
and	O
later	O
on	O
Windows	B-Application
XP	I-Application
;	O
the	O
game	O
gained	O
popularity	O
subsequent	O
to	O
its	O
inclusion	O
in	O
the	O
latter	O
.	O
</s>
<s>
Windows	B-Application
Vista	I-Application
again	O
saw	O
a	O
new	O
version	O
,	O
which	O
was	O
mainly	O
unchanged	O
in	O
Windows	B-Device
7	I-Device
.	O
</s>
<s>
Finally	O
,	O
Windows	B-Application
8	I-Application
has	O
another	O
updated	O
version	O
available	O
in	O
the	O
Windows	B-Application
Store	I-Application
as	O
part	O
of	O
Microsoft	B-Application
Solitaire	I-Application
Collection	I-Application
but	O
not	O
bundled	O
with	O
the	O
operating	O
system	O
.	O
</s>
<s>
Windows	B-Operating_System
10	I-Operating_System
has	O
the	O
Microsoft	B-Application
Solitaire	I-Application
Collection	I-Application
app	O
updated	O
and	O
bundled	O
with	O
the	O
OS	O
.	O
</s>
<s>
There	O
are	O
three	O
levels	O
of	O
difficulty	O
in	O
Spider	B-Application
Solitaire	I-Application
:	O
Beginner	O
(	O
one	O
suit	O
)	O
,	O
Intermediate	O
(	O
two	O
suits	O
)	O
,	O
and	O
Advanced	O
(	O
four	O
suits	O
)	O
.	O
</s>
<s>
Spider	B-Application
Solitaire	I-Application
has	O
an	O
"	O
undo	B-Application
"	O
feature	O
that	O
allows	O
moves	O
to	O
be	O
retracted	O
.	O
</s>
<s>
Any	O
number	O
of	O
moves	O
can	O
be	O
retracted	O
,	O
back	O
to	O
the	O
last	O
non-retractable	O
move	O
,	O
but	O
each	O
"	O
undo	B-Application
"	O
subtracts	O
one	O
from	O
the	O
score	O
.	O
</s>
<s>
To	O
aid	O
the	O
player	O
,	O
the	O
key	O
H	O
(	O
Windows	B-Application
Vista	I-Application
or	O
later	O
only	O
)	O
or	O
M	O
will	O
highlight	O
possible	O
moves	O
,	O
whereas	O
in	O
the	O
Windows	B-Application
XP	I-Application
version	I-Application
this	O
is	O
done	O
by	O
clicking	O
on	O
the	O
score	O
panel	O
.	O
</s>
<s>
The	O
player	O
can	O
also	O
undo	B-Application
previous	O
moves	O
and	O
try	O
again	O
.	O
</s>
<s>
In	O
Windows	B-Device
7	I-Device
,	O
these	O
scores	O
appear	O
in	O
the	O
Games	O
Explorer	O
by	O
clicking	O
the	O
game	O
and	O
selecting	O
the	O
Statistics	O
tab	O
in	O
the	O
Preview	O
Pane	O
.	O
</s>
<s>
There	O
are	O
two	O
measures	O
of	O
performance	O
in	O
Spider	B-Application
Solitaire	I-Application
:	O
number	O
of	O
games	O
won	O
and	O
highest	O
score	O
.	O
</s>
<s>
The	O
final	O
score	O
in	O
a	O
Spider	B-Application
Solitaire	I-Application
game	O
is	O
calculated	O
as	O
follows	O
.	O
</s>
<s>
Using	O
the	O
“	O
undo	B-Application
”	O
feature	O
also	O
subtracts	O
one	O
point	O
from	O
the	O
score	O
.	O
</s>
<s>
Therefore	O
,	O
in	O
a	O
winning	O
game	O
the	O
total	O
score	O
is	O
800	O
plus	O
500	O
minus	O
the	O
number	O
of	O
moves	O
and	O
"	O
undo	B-Application
"	O
s	O
.	O
</s>
<s>
Spider	B-Application
Solitaire	I-Application
was	O
referenced	O
on	O
the	O
February	O
27	O
,	O
2021	O
episode	O
of	O
Saturday	O
Night	O
Live	O
.	O
</s>
