<s>
Fritz	B-Application
and	I-Application
Chesster	I-Application
(	O
)	O
is	O
a	O
series	O
of	O
educational	O
programs	O
about	O
chess	B-Application
for	O
children	O
.	O
</s>
<s>
In	O
each	O
of	O
the	O
four	O
PC	O
games	O
,	O
Fritz	O
White	O
and	O
his	O
cousin	O
Bianca	O
learn	O
chess	B-Application
with	O
the	O
help	O
of	O
the	O
anthropomorphic	O
rat	O
Chesster	O
.	O
</s>
<s>
In	O
the	O
first	O
three	O
games	O
,	O
they	O
learn	O
various	O
elements	O
of	O
chess	B-Application
before	O
competing	O
against	O
King	O
Black	O
in	O
a	O
chess	B-Application
game	O
;	O
the	O
fourth	O
game	O
is	O
set	O
on	O
an	O
alien	O
planet	O
.	O
</s>
<s>
The	O
first	O
game	O
teaches	O
the	O
rules	O
of	O
the	O
game	O
,	O
along	O
with	O
some	O
basic	O
checkmates	B-Application
and	O
strategy	O
.	O
</s>
<s>
The	O
next	O
games	O
teach	O
opening	O
theory	O
,	O
tactics	O
,	O
middlegame	O
analysis	O
and	O
endgames	O
,	O
along	O
with	O
checkmate	B-Application
patterns	O
.	O
</s>
<s>
Other	O
games	O
feature	O
chess	B-Application
variants	O
,	O
chess	B-Application
puzzles	O
or	O
timed	O
games	O
with	O
highscore	O
boards	O
.	O
</s>
<s>
Chess	B-Application
puzzle	O
books	O
and	O
workbooks	O
featuring	O
the	O
characters	O
have	O
been	O
produced	O
.	O
</s>
<s>
While	O
his	O
parents	O
are	O
on	O
holiday	O
,	O
Fritz	O
White	O
—	O
controlled	O
by	O
the	O
player	O
—	O
is	O
challenged	O
to	O
a	O
game	O
of	O
chess	B-Application
by	O
King	O
Black	O
.	O
</s>
<s>
Working	O
with	O
his	O
cousin	O
Bianca	O
,	O
and	O
his	O
parents	O
 '	O
friend	O
King	O
Kaleidoscope	O
,	O
they	O
travel	O
across	O
the	O
countryside	O
while	O
engaging	O
in	O
a	O
series	O
of	O
minigames	O
,	O
which	O
demonstrate	O
chess	B-Application
piece	O
movements	O
,	O
such	O
as	O
a	O
Ms.	O
Pacman-style	O
game	O
demonstrating	O
the	O
rook	O
's	O
horizontal	O
and	O
vertical	O
movements	O
,	O
and	O
a	O
sumo	O
wrestling	O
game	O
based	O
on	O
the	O
concept	O
of	O
king	O
opposition	O
.	O
</s>
<s>
With	O
Chesster	O
,	O
they	O
progress	O
through	O
the	O
three	O
stages	O
of	O
the	O
gym	O
,	O
which	O
contain	O
various	O
equipment	O
corresponding	O
to	O
different	O
aspects	O
of	O
chess	B-Application
.	O
</s>
<s>
The	O
lightweight	O
section	O
formally	O
describes	O
the	O
movement	O
of	O
the	O
chess	B-Application
pieces	O
.	O
</s>
<s>
The	O
middleweight	O
section	O
describes	O
the	O
initial	O
chessboard	O
layout	O
,	O
castling	O
,	O
stalemate	O
,	O
checkmate	B-Application
with	O
two	O
rooks	O
or	O
one	O
rook	O
.	O
</s>
<s>
After	O
completing	O
every	O
exercise	O
,	O
Fritz	O
plays	O
chess	B-Application
against	O
King	O
Black	O
.	O
</s>
<s>
Fritz	B-Application
and	I-Application
Chesster	I-Application
then	O
falls	O
down	O
a	O
chute	O
leading	O
to	O
the	O
basement	O
of	O
King	O
Black	O
's	O
castle	O
,	O
where	O
Chesster	O
has	O
been	O
kidnapped	O
.	O
</s>
<s>
They	O
begin	O
to	O
use	O
his	O
chess	B-Application
training	O
machines	O
and	O
accumulate	O
"	O
ELO	O
"	O
creatures	O
as	O
their	O
ability	O
improves	O
,	O
which	O
they	O
need	O
in	O
order	O
for	O
a	O
sensor	O
in	O
the	O
elevator	O
to	O
allow	O
them	O
to	O
journey	O
upwards	O
.	O
</s>
<s>
They	O
also	O
learn	O
about	O
discovered	O
check	O
and	O
double	O
check	O
and	O
play	O
a	O
game	O
about	O
rat	O
traps	O
similar	O
to	O
Space	B-Application
Invaders	I-Application
.	O
</s>
<s>
After	O
completing	O
these	O
minigames	O
,	O
they	O
use	O
pieces	O
of	O
paper	O
they	O
found	O
on	O
the	O
floor	O
along	O
the	O
way	O
to	O
solve	O
a	O
chess	B-Application
puzzle	O
of	O
mate	O
in	O
seven	O
.	O
</s>
<s>
At	O
the	O
Pleasantville	O
fairground	O
,	O
King	O
Black	O
has	O
upset	O
16	O
kings	O
by	O
winning	O
their	O
"	O
Chess	B-Application
Chubbies	O
"	O
—	O
plush	O
toys	O
—	O
in	O
a	O
chess	B-Application
game	O
.	O
</s>
<s>
They	O
also	O
play	O
Chesster	O
's	O
flea	O
circus	O
attraction	O
,	O
in	O
which	O
they	O
have	O
to	O
place	O
a	O
piece	O
on	O
the	O
board	O
such	O
that	O
black	O
is	O
in	O
checkmate	B-Application
under	O
time	O
pressure	O
.	O
</s>
<s>
Additionally	O
,	O
one	O
game	O
is	O
similar	O
to	O
the	O
video	O
game	O
Breakout	B-Application
,	O
there	O
is	O
one	O
in	O
which	O
chicks	O
have	O
to	O
be	O
lured	O
into	O
a	O
trap	O
,	O
and	O
another	O
features	O
a	O
chess	B-Application
game	O
with	O
randomized	O
effects	O
at	O
predetermined	O
moments	O
,	O
such	O
as	O
all	O
pieces	O
being	O
removed	O
from	O
the	O
h-file	O
.	O
</s>
<s>
The	O
player	O
is	O
also	O
introduced	O
to	O
chess	B-Application
clocks	O
and	O
losing	O
chess	B-Application
and	O
asked	O
to	O
find	O
checkmate	B-Application
after	O
viewing	O
a	O
blindfold	O
chess	B-Application
opening	O
.	O
</s>
<s>
Other	O
games	O
focus	O
on	O
checkmates	B-Application
,	O
including	O
Anastasia	O
's	O
mate	O
,	O
Morphy	O
's	O
mate	O
,	O
checkmate	B-Application
with	O
two	O
bishops	O
and	O
with	O
a	O
bishop	O
and	O
a	O
knight	O
—	O
without	O
reaching	O
a	O
draw	O
by	O
the	O
50	O
moves	O
rule	O
.	O
</s>
<s>
The	O
player	O
then	O
plays	O
against	O
King	O
Black	O
in	O
a	O
chess	B-Application
game	O
with	O
time	O
control	O
of	O
ten	O
minutes	O
per	O
side	O
.	O
</s>
<s>
They	O
can	O
then	O
play	O
against	O
Chesster	O
at	O
various	O
levels	O
of	O
difficulty	O
,	O
King	O
Kaleidoscope	O
,	O
King	O
Black	O
,	O
or	O
a	O
team	O
consisting	O
of	O
the	O
Chess	B-Application
Chubbies	O
.	O
</s>
<s>
They	O
learn	O
about	O
the	O
Queen	O
's	O
Gambit	O
,	O
blockades	O
,	O
additional	O
checkmate	B-Application
patterns	O
,	O
passed	O
pawns	O
,	O
the	O
concepts	O
of	O
space	O
and	O
tempo	O
,	O
drawing	O
strategies	O
and	O
variants	O
including	O
dice	O
chess	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
written	O
by	O
the	O
German	O
author	O
and	O
illustrator	O
and	O
the	O
headteacher	O
and	O
chess	B-Application
trainer	O
.	O
</s>
<s>
Part	O
1	O
was	O
released	O
on	O
a	O
CD-ROM	B-Device
and	O
ran	O
on	O
Windows	B-Application
95	I-Application
and	O
later	O
Windows	O
machines	O
.	O
</s>
<s>
In	O
2018	O
,	O
it	O
was	O
released	O
as	O
an	O
iOS	B-Application
app	O
.	O
</s>
<s>
Chess	B-Application
puzzle	O
books	O
and	O
workbooks	O
featuring	O
the	O
characters	O
in	O
the	O
series	O
were	O
also	O
produced	O
.	O
</s>
<s>
Hope	O
Katz	O
Gibbs	O
of	O
The	O
Washington	O
Post	O
praised	O
Part	O
1	O
as	O
a	O
"	O
clever	O
teaching	O
tool	O
"	O
which	O
divides	O
learning	O
chess	B-Application
into	O
"	O
small	O
,	O
kid-friendly	O
lessons	O
"	O
.	O
</s>
<s>
Brian	O
Wilson	O
of	O
School	O
Library	O
Journal	O
wrote	O
that	O
Part	O
1	O
has	O
"	O
an	O
overlong	O
story	O
,	O
too	O
much	O
dialogue	O
,	O
and	O
some	O
confusing	O
directions	O
"	O
but	O
is	O
"	O
humorous	O
"	O
and	O
"	O
mostly	O
successful	O
"	O
in	O
teaching	O
chess	B-Application
.	O
</s>
<s>
The	O
New	O
York	O
Times	O
Charles	O
Herold	O
reviewed	O
Part	O
2	O
positively	O
,	O
calling	O
the	O
graphics	O
"	O
appealing	O
"	O
and	O
the	O
dialogue	O
"	O
amusing	O
"	O
,	O
while	O
finding	O
that	O
it	O
was	O
"	O
the	O
most	O
entertaining	O
way	O
"	O
he	O
knew	O
of	O
to	O
improve	O
one	O
's	O
chess	B-Application
.	O
</s>
