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Las
Vegas Showgirls II
by
Georgia Albert
with Jan Newton
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Chess
- Tesselations - Knight's
Tour -
Escher - "Harry Potter
DATELINE
Las
Vegas, May 20, 2003
Bambi:
Candi, What do you think about
our new assignment for Goddesschess?
Candi:
Do you mean the" Showgirl Uncovers
Chess" article?
Bambi:
Yes!
Candi:
I like the idea, but I am confused about the title, "Showgirl Uncovers
Chess". It reminds me of the all-time classic film "Debbie Does
Dallas". Are we going to be reviewing Porn Films?
Bambi:
No, sorry to say, no porn this time,
but maybe in our next assignment we will get a chance.
Candi:
Drats! I suppose we are going to review the chess representation in
a PG rated movie instead?
Bambi:
Candy, how did you know the
movie has a PG rating?
Candi:
It's simple, I have ESPN, and some of my friends think I'm psychotic.
Bambi:
Candi, it's ESP, Not ESPN, and it's
Psychic, not psychotic!
Candi:
I am confused.
Bambi:
I don't doubt it. I'll explain
it later, much later.
Candi:
OK, So what film are we going to
review?
Bambi:
Harry Potter and the Sorcerer's
Stone. do you remember anything about the movie? Or should
we rent the DVD?
Candi:
Sure I remember, It's coming back
to me now...Potter...Potter...Oh Yeah! Colonel Potter from "M.A.S.H"
is in it..
Bambi:
No! Not Colonel Potter! It's Harry
Potter!
Candi:
Oh Yeah! Now I remember....... the
high school teacher from "Welcome Back Potter"....
Bambi:
No! Not Kotter, it's Potter, Harry Potter! The young boy who discovers
he is a Wizard with magical powers, and goes to Hogwort's Castle for
schooling. And while he is there, he plays a couple of games of Chess.
Candi:
Oh, that movie....the little
boy with the glasses, an owl and a broomstick....there wasn't any
sex in the movie. No wonder I didn't remember it.
Bambi:
The reason Isis wanted us to review this movie is that it ties into
my Tesselation and Chess research.
Candi:
Tasselations.....Tassels....Oh! The
pasties that exotic dancers wear...
Bambi:
Not Tasselations! It's "Tesselations."
Go get the MC Escher Book off the coffee table and I will show you what
I am talking about.
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WHAT BAMBI THINKS:
From
The Math Forum, by Suzanne Alejandre
Definition
of Tesselation: "Tessellate"
means to form or arrange small squares in a checkered or mosaic
pattern. The word "tessellate" is derived from the Ionic version
of the Greek word "tesseres," which in English means "four." The
first tilings were made from square tiles.
A
regular polygon has 3 or 4 or 5 or more sides and angles, all
equal. A regular tessellation means a tessellation made
up of congruent regular polygons. [Remember: Regular means
that the sides of the polygon are all the same length. Congruent
means that the polygons that you put together are all the same
size and shape.]
Only
three regular polygons tessellate in the Euclidean plane: triangles,
squares or hexagons. We can't show the entire plane, but imagine
that these are pieces taken from planes that have been tiled.
Here are examples of
When
you look at these three samples you can easily notice that the
squares are lined up with each other while the triangles and hexagons
are not. Also, if you look at 6 triangles at a time, they form
a hexagon, so the tiling of triangles and the tiling of hexagons
are similar and they cannot be formed by directly lining shapes
up under each other - a slide (or a glide!) is involved.
You
can work out the interior measure of the angles for each of these
polygons:
| Shape
triangle
square
pentagon
hexagon
more
than six sides
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Angle
measure in degrees
60
90
108
120
more
than 120 degrees
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Since
the regular polygons in a tessellation must fill the plane at each
vertex, the interior angle must be an exact divisor of 360 degrees.
This works for the triangle, square, and hexagon, and you can show
working tessellations for these figures. For all the others, the
interior angles are not exact divisors of 360 degrees, and therefore
those figures cannot tile the plane.
Steven
Schwartzman's The Words of Mathematics (1994,
The Mathematical Association of America) says:
tessellate
(verb), tessellation (noun): from Latin tessera
"a square tablet" or "a die used for gambling." Latin tessera
may have been borrowed from Greek tessares, meaning "four,"
since a square tile has four sides. The diminutive of tessera
was tessella, a small, square piece of stone or a cubical
tile used in mosaics. Since a mosaic extends over a given area
without leaving any region uncovered, the geometric meaning
of the word tessellate is "to cover the plane with a pattern
in such a way as to leave no region uncovered." By extension,
space or hyperspace may also be tessellated.
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< Elephant
and Turret Tesselation, Escher
Candi: Here
it is. Escher is one of my favorite designers. I would like
to do my new line of thong bikinis with pasties using his fabric designs.
Bambi, look at this design! |
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Bambi: Oh,
yes! This is one of my favorites. This Classic chess piece
design of the "Elephant and Turret" was favored by the ancients...
...and maybe also 21st Century Chicago pub crawlers... |
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WHAT BAMBI THINKS:
"Buffalo
are very plentiful in the steppes. They are hunted with elephants.
Turrets are placed on the elephant's back, in which several
men are hidden. Thus they traverse the plain, and as soon as the
elephant comes up with the buffalo he attacks him with his teeth
and holds him till the hunters get off his back and capture him."
(Emphasis added).
Excerpted
from the subtitle "My Experiences In Hindustan," from
Mirat
ul Memalik (The Mirror of Countries), 1557
CE, by Sidi Ali Reis (Piri Reis, originator of the famous map
of the globe).
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Candi:
Oh, Bambi!
Bambi:
What? Are you all right? You are getting pink all over!
Candi:
Oh, Bambi! I just had an idea!
Bambi:
Oh, Candi! That is wonderful! I knew you could do
it! Tell me, what is your idea!
Candi:
4.
Bambi:
Oh, Candi! I am so excited. That is sooooo deep!
Candi:
Ooooh, I know! I am just shivering all over! 4!
4! 4!
Bambi:
Ooooh, stop!
Candi:
I can't! I am inspired. Bambi, four to the third power.
FOUR TO THE THIRD POWER!
Bambi:
Ooooh, stop, stop! I can't take anymore!
Candi:
Oh. Well then. Okay. I think I'll paint my
toe nails.
Bambi:
What! You are going to paint your toe nails? But you
just told me one of The Secrets of the Universe!
Candi:
I did?
Bambi:
Oooooh Candi. Don't use THAT color.
Candi:
Well, if you feel that way about it, I won't! Hey - wait
a minute. I just told you one of the Secrets of the Universe!
Bambi:
Yes, you did.
Candi:
Well, in that case, I am going to paint my toe nails -
Bambi:
Oh! Forget about your toe nails for one minute, Candi!
Don't you understand anything?
Candi:
Well, for one minute? Hmmm, I suppose I can do that.
And of course, I understand anything. I mean, some things.
I mean, I understand - Rooks? Oh oh. I feel dizzy.
Oh, Bambi! What is happening to me? I feel so strange,
I feel so funny, I feel so oh oh oh oh OH OH OH...
Bambi:
Oh Candi! You have just had another revelation!
Candi:
What? Two in two minutes? Oooooh, I knew that yoga
would do me some good!
Bambi:
Oh, where is my The Art of Chess Book, Candi? Darn!
Where did I put it... There are some examples of the Elephant
and Turret - Rook (Rukh) pieces in it... I also need to go
to the Media Store and rent the Harry Potter movie for you to watch.
There is a scene in the movie with a fantasy staircase that resembles
Escher's "House of Stairs."
| WHAT
BAMBI THINKS:
House
of Stairs, Escher, 1951. This
reminds me a lot of the ancient Indian game Moksha-Patamu ("Snakes
'n Ladders").
A
challenge to the mathematicians:
(1)
Can you explain and demonstrate (on a graph of the painting) how
the Fibonnaci Spiral is embodied in this painting???
(2)
Can you explain and demonstrate the use of the "Golden Mean" in
the construction of the various staircases???
(3)
What tiling pattern did Escher use in this painting?
(4)
Put this all on a chessboard (extra bonus points)!!!!
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Candi:
Bambi, what is 4 times 4 times 4? Isn't that 64? Isn't
that a chessboard? What are tesselations, except the graphical
representation of the three-dimensional dichotomy of dark and light?
Evil and goodness? Black and white? Bambi! IT'S
A CHESSBOARD! THE UNIVERSE IS A CHESSBOARD!
Bambi:
Oh, Candi! I am soooo impressed! You are truly inspired!
I really do like that checkerboard look for your toe nails.
Yes, you are right! Four to the third power is 64, which is
the number of squares on the chessboard, both western and Chinese.
Although, you know, it is very strange - the Chinese do not play
on the squares, they play on the intersections of the lines!
Candi:
Oh! Thank you, Bambi. I like
the black and white checked look. You know, 4 is a very significant
number. Only think, there are four cardinal directions; there
are four seasons; according to the ancients, there are four primary
elements: earth, air, fire, and water. You know, Bambi,
Chaturanga, which is what the chess HIStorians say is the earliest
form of proto-chess, means [chatur = four] and [anga = limb]. But
there are EIGHT primary angas:
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WHAT CANDI THINKS:
Anga
("limb"): a fundamental category of the yogic path, such as
asana, dharana, dhyana, niyama, pranayama, pratyahara, samadhi,
yama; also the body (deha, sharira)
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4
x 8 = 32! That is the number of pieces on the chessboard,
Bambi. And 2 x 32 = 64, the number of squares on the chessboard!
And 4x4x4 = 64! It is quite possible the ancient Indians
used Chaturanga on the Ashtapada board to embody aspects of their
religious beliefs. While you're away at the Media Store, I
am going to slip into something comfortable...a nice warm Bubble
Bath.... Then I think I will do some Yoga. By the way, did
you know that yoga can improve your sex life?
Bambi:
I was the one who told you about yoga and an improved sex.
But Candi, don't you know that Chess HIStorians say that Chatur-anga
means "four armies" - or something like that. And that is
why they say Chess is a War Game!
Candi:
Oooh, now I am getting confused!
But the tesselations - they're not wrong, are they?
Bambi:
No, of course not!
Candi:
Well, then. Bambi, don't
you see - if the tesselations cannot lie, then those Chess HIStorians
are Wrong! Chess is about mathematics, not silly-dilly armies!
I mean, what else is the Knight's Tour about, except mathematics.
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CANDI'S
BRAIN IS NOW IN HIGH GEAR:
 The
famous "Knight's
Tour" Tessellation (closed tour, figure
left) is known throughout
the Chess World! ... Four of the five platonic solids are represented
by the knight's move on the chess board. …The only other
pattern made by the knight is a square
pattern (figure right) which makes a cube. The fifth platonic
solid, not yet mentioned, is the Tetrahedron
which is contained within the cube. Here are two other tessellations
of Knight's Tours by Dan Thomasson:
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Bambi:
Tessellations are soooo exciting.
My toes are tingling, oooh. Candi! Do you think the Knight's
Move might be a short-hand way of proving the Pythagorean Theorem?
After all, the Knight's Move forms a right triangle -
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WHAT BAMBI THINKS:
(Figure left) The blue square is the square of the hypoteneuse
of the red triangle. The blue square is clearly equal in
area to the purple plus the green square. But the purple
square is the square of one of the legs of the red triangle.
The green square is the square of the other leg. This dissection
is attributed to Henry Perigal. Tessellation of the proof
(figure right). More proof
of the Pythagorean Theorem through tessellation by Steve Edwards,
Southern Polytechnic State University.
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Candi:
Is he that cute little bald man who spins the Wheel of Fortune over
at the Four Queens?
Bambi:
No, Candi. We will go over
the Harry Potter movie when you return from the store. I am off to
the Bath!
Two
Hours Later..
Bambi:
Your Lotus position is beautiful...
You are getting real good...
Candi:
Thanks Bambi. Ever since I
started doing my yoga exercises naked I have been enjoying my exercises
more.... You should try it. It feels wonderful!
 Bambi:
OK, after the Harry Potter movie.
We really do need to move on to the Wizard's Chess scenes. The Chess
game played in the Great Hall was played with Scandinavian Chess Pieces
made of Walrus Ivory, modeled after this piece
(image, right). The Chess game was played with huge pieces.
Here is a picture of the playing
pieces and chess board (image, left). Where are you going?
Candi, come back!
Candi: Bambi, I have my priorities....a
date with a charming man comes first. Don't stay up waiting for me,
if you know what I mean;-)
Bambi:
That is a wonderful idea! I am going
to call my Sweetheart and invite him over for a game of Goddess Chess;-)
For
Your Further Reading and Viewing Pleasure ...... (ooooh!!) .....!
Tesselation
in Graphic Art
Tilings from Historical Sources:
Images
of Tiling from Ancient Egypt, Persia, China, etc.
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