Rubi ks QeTMENGAGEMENT 10 Q')

AL ENDAR IcdBy Jack Eidswick

LjLJ L I

RUB K'S CUBE IS A TRADEMARK OF IDEAL TOY CORPORATIONWHICH IS NOT ASSOCIATED WITH THIS BOOK

CHRISTMAS CROSS

CANDY STRIPE

,q% \ p 6TM

ENGAGEMENT 1 Q)CALENDAR

By Jack Eidswick

l Il

I and books

South Bend, Indiana

Magic Ribbons.h, (12x12"):ornelis Escher

To Eric

Acknowledgments:Thanks to all who worked on the concept andproduction of this unique engagement calendar;especially Dennis Thurlow of TAB Books for dates,Patty Walsh for art and design, and Emil Krausefor his editorial assistance.

About the authorJack EidswickJack Eidswick, a Mathematics Professor at theUniversity of Nebraska has devised numerousgeometric puzzles with the Rubik Cube and is theauthor of "Rubik's Cube Made Easy,*". which isthe first solution book that explains themathematics behind the cube.

*Rubik's Cube Made Easy, by Jack Eidswick; Peace Press; 48pp.,illustrated.

Study for the lithograph Belvedere.Pencil, (5x5")Maurits Cornelis Escher, 1958.

DECEMBER 81JANUARY

"God does not play dice."-Albert Einstein.

30Wednesday

Sud7Sunday

31Thursday

28Monday

NEW YEAR'S DAY

1Friday

29Tuesday

2Saturday Isaac Asimov, 1920

JANUARYJohn Horton Conway can solve the cube behindhis back with only a few "peeks."

3Sunday J.R.R. Tolkein, 1892

4Monday

5Tuesday Alan Watts, 1915

6Wednesday

7Thursday

8Friday

9Saturday

DOTS

l

i

I

JANUARY"...all that can be truly said of the sense-organismis, that, under different circumstances theyproduce different sensations and perceptions."

-Ernst Mach. The Analysis of ensation. 1914.

11Monday

12TuesdayI

MARTIN LUTHER KING DAY

15Friday Edward Teller, 1908

1.

16Saturday

13Wednesday

Sunday14Thursday

JANUARY"How often have I said to you that when you haveeliminated the impossible, whatever remains,however improbable, must be the truth."

-Sherlock Holmes. Sign of Four.

17Sunday Ben Franklin, 1706

18Monday

19Tuesday

20Wednesday

21Thursday

22Friday

Saturday Jack Eidswick, 1934

JANUARYThe human heart beat is 0.5-2 sec; a Sclar Day is 8.64x104 sec; aLunar Cycle is 1.2x102 sec; a Sideral Year is 3.2x10' sec; theGleissberg Cycle (80 yr sunspots) is 2.4x108 seac; the Zero CheckCycle is 5.42x10f sec; the Orbit Cycle is 2.9x1012 sec; a GalacticCycle is 7.04x10' sec: the Universal Cycle is 6.3x101' sec.

25NIMonday Joseph-Louis Lagrange, 1736

26Tuesday

27Wednesday Lewis Carroll, 1832

281Thursday

29StFriday

Saturday

24Sunday

JANUARYFEBRUARY

"Of which we cannot speak we have to remainsilent." - Ludwig Wittgenstein. Tractatus.

1Monday

GROUND HOG DAYPunxatawney, Penna.

2Tuesday

3Wednesday

4Thursday

5Friday

6Saturday Firt Moon Landing, ION

31Sunday

UPSWINGER 1

sTAFRT

END

FEBRUARY1) No body in a place no larger than itself

is moving.2) Every body is a body in a place

no larger than itself.3) Therefore, no body is moving.

-Zeno's Paradox No. 1 syllogism by Charles Pierce,Collected Papers c.1912.

7Sunday

8M onday Jules Verne, 1828

9Tuesday

10Wednesday

11Thursday Thomas Edison, 1847

LINCOLN'S BIRTHDAY

12Abraham Lincoln, 1809Friday Charles Darwin, 1809

13Saturday Galilei Galileo, 1564

FEBRUARY"When the bishops (Council of Ncea) took their places upon the thrones theywere 318; when they rose to be called over, it appeared that they were 319; sowhen they approached the last of the series he immediately turned into thelikeness of his next neighbor ... it is perfectly possible to imagine a universe inwhich any act of counting be a being in it annihilated some members of the classcounted during the time and only during the time of its continuance."

-A.N. Whitehead, Mathematics, Ency. Brit. 13th edn.

15A.N. Whitehead, 1861M onday Douglas Hofstadter, 1945

16Tuesday

17Malthus, 1478A Wednesday Gary Hosler Meisters, 1932

18Thursday Count Volta, 1795

19Friday Copernicus, 1473

20Saturday

ST. VALENTINE'S DAY

14Sunday

Ae

VERTICAL FLIPPER 1

START

END

FEBRUARY"...the apriority of time does not only qualify the properties ofarithmetic as synthetic a priori judgements, but is oes the samefor those of geometry, and not only for elementary two- andthree-dimensional geometry, but for non-Eucledian and n-dimensional geometries as well. For since Descartes we havelearned to reduce all these geometries to arithmetic by means ofthe calculus of coordinates."

-L.E.J. Brouwer. Bull. Amer. Soc. 20. 1913, p.8 5.

GEORGE WASHINGTON'S BIRTHDAY

22H. Hertz, 1857

George Washington, 1732. M onday Arthur Schopenhauer, 1788

Tuesday

25Thursday

26Friday

ASH WEDNESDAY

24Wednesday

FEBRUARYMARCH

"Projective geometry is all geometry."-Arthur Cayley.

28Sunday Linus Pauling, 1901

3WednesdaGeorg Cantor, 1845

, Wenesdy Alexander Bell, 1114!

4Thursday George Gamow, 1904

2TuesdayI

6SaturdayI

sT

RT

THE REPEAT GAME

opf

END

MARCHThere are 43,252,003,274,498,856,000 (over 43 U.S.billion billion) attainable positions. This number isso large that if you could see a new position everysecond, it would take over 1,000 billion years to seethem all! The age of the universe is estimated to beonly 12-20 billion years.

Tuesday

11Thursday

12Friday

13Saturday

Monday

MARCHIf we placed a living organism in a box... one could arrange theorganism, after any arbitrary flight, could be returned to itsoriginal spot in scarcely altered condition... for the movingorganism the lengthy time of the journey was a mere instant,provided the motion took place with approximately the speed of

-Albert Einstein. Mathematical Theory of Relativity. Cesel-lsch. in Zurich, 56, 1911, p.52.

14,Sunday Albert Einstein, 1879

IDES OF MARCH

15Monday

16Tuesday George S. OhmL=S7

ST. PATRICK'S DAY

17Wednesday

18Thursday

19Friday

Spring Begins

20Saturday

ST

RT

END

CHECKERBOARD

MARCH"It is remarkable that a science which began withthe consideration of games of chance should havebecome the most important object of humanknowledge."

- Laplace.

21J.S. Bach, 1684

Jean Baptiste, 1768Sunday ,sBc,18,Sunday Joseph Fourier, 1768

22Monday

23iTuesday Pierre-Simon de Laplace, 1749

25Thursday

26Friday

24Wednesday

MARCHAPRIL

On aggregate of straight lines being represented asvery narrow rectangles (linelets): "it comes to thesame result whichever way you take it!"

L. Barrow. Lectiones Geometricae 1735.

29Monday

30TuesdayI

31Wednesday Rene Descartes, 1598

ALL FOOLS DAY

1Thursday

2Friday

3Saturday

28Sunday

ST mmml*

R 04T

EeND %

UPS WINGER 2

APRIL"Nobody has ever noticed a place except at a time,or a time except at a place."- H. Minkowski, The Principle of Relativity. London, 1920,

Tuesday

7l Wednesday Charles Fourier, 1772

Passover Begins

8ThursdayGOOD FRIDAY

9Friday

10Saturday

PALM SUNDAY

4Sunday

Monday

APRIL"...the velocity of sound may be for the bees thesame universal constant as is the velocity of light inman's electromagnetic philosophy."

- H. von Foerster. Cybernetics. 1951.

14Wednesday

15Thursday Leonard Euler, 1707u sday Leonardo da Vinci, 1452

16,Friday Wilbur Wright, 1867

17Saturday

EASTER SUNDAY

11Sunday

12Monday

13Tuesday

THE TWELVE CUBE WORLDS

APRIL"One cannot assign a relation in space to what isdetermined only in time."

-I. Kant. Sommti. Werke. V.10, p.112, 1839.

19Monday

20Tuesday

21Wednesday Immanuel Kant, 1724

22Thursday

Friday Wm. Shakespeare, 1564

24Saturday

Sunday

APRIL MAY"The moving finger writes; and having writ,

Moves on: nor all your Piety or WitShall lure it back to cancel half a Line,

Nor all your Tears wash out a Word of it."

25Sunday

26M onday David Hume, 1711

27Tuesday Samuel Morse, 1791

28W.TednesdayI. Newton pubi. Principia, ^1686

29Thursday Henri Poincare, 1854

30Friday Carl Friedrich Gauss, 1777

1

Saturday Pierre T DeChardin, 1831

MAY"Now I maintain that, if he had lived forever, andnot wearied of the task, then, even if his life hadcontinued as eventfully as it began, no part of hisbiography would have remained unwritten."- Bertrand Russel. The Principles of Mathematics. 1937, onSterne's Tristram Shandy Paradox.

2Sunday

3Monday

4Tuesday

5Wednesday

6Thursday

7Friday Peter I Tchaikovsky, 1849

8Saturday

MAY"Our consciousness weaves a route at randomalong the ever-branching evolutionary pathway ofthe cosmos, so it is we, rather than God, who areplaying dice." - Paul Davies. Other Worlds.

MOTHER'S DAY

9Sunday

10Monday

11Tuesday

12Wednesday

13Thursday

14Friday Gabriel Farenheit, 1686

15Saturday Pierre Curie, 1859

START

END

ZIG-ZAG

MAY"...at the end of the century the use of words andgeneral educated opinion will have altered somuch that one will be able to speak of machinesthinking without expecting to be contradicted."

- Alan M. Turing. Computer Machinery. Mind. LIX, 1950.

Tuesday

20Thursday joh S. Mill, 1806

211 Friday

22Saturday

19Wednesday

Monday

MAYAny permutation can be written as a product oftranspositions in many ways, but the number offactors will always be even or always odd.

The cube group has 2 generators!

23Sunday Linnaeus, 1707

24Monday

Tuesday

26Wednesday

27Thursday

28Friday

29Saturday

START

THE REPEAT GAME

v0

-f'

END

N

13W

MAYJUNE

"Space is a snapshot of time, and time is space inmovement"

- lean Piaget. Construction of Reality in the Child.

30SundayMEMORIAL DAY

31Monday

2Wednesday

1TuesdayI

3Thursday James Hutton, 1726

4Friday

5Saturday Socrates, 468 B.C.

JUNE"The truths of reasoning, are necessary and their opposites isimpossible; truths of fact are contingent and their opposites ispossible.... But there must also be a sufficient reason for con-tingent truths or truths of fact."

-G.W. Leibniz. Monadology. p.236. c. 1721

9Wednesday

10Thursday

11Friday

12Saturday

6Sunday

7Monday

8Tuesday Frank Lloyd Wright, 1869

JUNE"The mathematical continuum cannot begin to be determined.This concept is understood precisely by appealing either to theidea of time or that of space, for these ideas themselves can onlybe clearly explained by means of a continuity concept whichmust be more primitive and independent of them....'- Georg Cantor. Grundlagen einer allgemeinen Mannig-Jatichkeitslehre. Leipzig, 1883, p.29 .

Tuesday

17Thursday M.C. Escher, 1898

18Friday Erno Rubik, 1937

19Saturday Confcou, 51v aura Blaise Pascal, 1623

16Wednesday

Sunday

Monday

JUNE"Actualities seem to float in a wider sea of pos-sibilities from out of which they were chosen; andsomewhere indeterminism says, such possibilitiesexist, and form part of the truth."

-William James.

FATHER'S DAY

20Sunday

21Palo Soleri, 1919M monday Jean P Sarte, 1905

22Tuesday

23Wednesday

24Thursday

25Friday George Orwell, 1903

26Saturday

OUT OF THIS WORLD

JUNE JULYRead about the mirror problem in:

il9j\jrfgiH q 191eeI g'io0IIiM OQ yffW,7fnwoU\qU ton briB

The Journal of Philosophy, 1974, pp259-277.

30WednesdayDOMINION DAY

1Thursday Gottfried Leibniz, 1646

2Friday Herman Hesse, 1677

3Saturday Franz Kafka, 1883

27Sunday

28Monday

29Tuesday

JULY"All the objects of our world are 3 D images formedthus electromagnetically - super-hologram imagesif you will."

- C. Muses and A. Young. Consciousness and Reality.

INDEPENDENCE DAY

4Sunday Rube Goldberg, 1878

5Monday

6Tuesday

7Wedn sdayRobert Heinlein, 1907LWe d nesday Nikola Tesla. 1856

8Thursday

9Friday

10Saturday

A?

VERTICAL FLIPPER 2

sT

RT

END

JULYTo see a world in a grain of sand

And a heaven in a wild flowerHold infinity in the palm of your hand

And eternity in an hour-Blake.

12Monday Buckminster Fuller, 1895

13Tuesday

151 Thursday Rembrandt, 1606

16Friday

17Saturday Robert Hooke, 1635

14Wednesday

Sunday

JULY"Projective geometry is all geometry."

-Arthur Cayley.

Impossibilities: A single edge flip, a single cornertwist, a single edge-pair swap, a single corner-pairswap.

18Sunday

19Monday

20Tuesday

21I Wednesday Marshall McLuhan, 1911

22Thursday

I Friday

24Saturday

sT

RT

DOUBLE EDGE-PAIR SWAPPER

END

JULY"All things no matter what their qualities are bitsof space-time... and empirical things are 'vorticesor eddies in the stuff of Space-Time, and universalsare the laws of their construction."-Samuel Alexander. Space, Time & Diety. London 1920, p.226.

26Monday Aldous Huxlev, 1894

27Tuesday

30Friday Henry Ford, 1862

31Saturday

28Wednesday

Sunday29Thursday

AUGUST"...if our methods only were sufficient ananalytical mechanics of general life processes itwould be possible and fundamentally would reacheven to the problem of the freedom of the will."

-Emil Du Bois-Reymond, 1848.

Sunday

2Monday

3Tuesday Wiliam Hamilton, 10

4Wednesday

5Thursday Niels Henrik Abel, 1802

6Friday

7Saturday

ZIG-ZAG +

CHECKERBOARD + DOTS

zzz

FL0wERS

,4dbo--,

AUGUST"It is possible, as we know, to construct ageometrically regular 3-dimensional solid - say, acube - which in the real world possesses acounterpart in the form of a die; and it is equallypossible to create geometrical solids of four, five,n-dimensions... -

- S. Lem; personetics in D. Hofstadter's The Mind's 1.

9Monday Jean Piaget, 186

10Tuesday

12Thursday

13Friday

14Saturday

11Wednesday

Sunday

AUGUST"there is not one way of measuring time more truethan another; that which is generally adopted isonly more convenient."

- H. Poincare, Value of Science.

To Newton the universe has a clock, whereas to Leibniz it is aclock.

15Sunday

16M onday Arthur Cayley, 1821

17Tuesday Ben Franklin, 1706

18Wednesday

19Thursday P.D. Ouspensky, 1897

20Friday Pierre Fermat, 1601

21Saturday Augustin-Louis Cauchy, 1781

AUGUST"...communication is the fact that the representation producedis (or purports to be) a replica of a representation already pre-sent to (with in the mind of) the sender. Communications is theactivity of replicating representations."

- D.M. MacKay. Cybernetics. VIII.

261 Thursday Le De Forest, 1873

27, Friday

Saturday Leo Tolstoy, 1628

25Wednesday

Monday

24Tuesday

AUGUSTSEPTEMBER

If you take the cube apart and reassemble it ran-domly, chances are 11 out of 12, you'll do it wrong.

1Wednesday

2Thursday

31Frida y Loren Eisley, 1907

41Saturday

29Sunday

30Monday

31Tuesday

AUGUST"...communication is the fact that the representation producedis (or purports to be) a replica of a representation already pre-sent to (with in the mind of) the sender. Communications is theactivity of replicating representations."

- D.M. MacKay. Cybernetics. VItI.

25Wednesday 1

26Thursday Le De Forest, 1873

271 Friday

28Saturday Leo Tolstoy, 1828

22Sunday

23Monday

24Tuesday

AUGUSTSEPTEMBER

If you take the cube apart and reassemble it ran-domly, chances are 11 out of 12, you'll do it wrong.

29Sunday

1

Wednesday

2Thursday

3Friday Loren Eisley, 1907

4Saturday

31TuesdayI

sT

RT

DOUBLE EDGE FLIPPER

END

SEPTEMBERIn practice there is "an unspeakable abyssbetween the finite and the infinite."

-A. Fraenkel Abstract Set Theory. 1953.

5|Sunday Arthur Koestler, 1905

LABOR DAY

6Monday

7Tuesday Kemeny solves Carroll probl., 1956

10I Friday

11SaturdayI

8WednesdayIThe famous Coconut Problem 1st appeared in print. October9,1926, by Ben Ames Williams in Saturday Evening Post.[Answer: 3,121|.

9Thursday

SEPTEMBERIf grammar represents an image of our structure, then the imageof culture can be expressed quite literally as a syntax of par-ticular rites, processes of biological and economic exchange,myths, legends and image-patterns."

- C. Levi-Strauss. 1965.

12,Sunday

15Wednesday Pavlov, 18

16Thursday

17Friday Georg Riemann, 18.

Rosh Hashana

18Saturday

14Tuesday A. von Humboldt, 16

SEPTEM BER"Specifically, it will almost always create new memory require-ments, since the results of the operations that are performedfirst must be stored while the operations are performed. Hencethe logical approach and the structure in natural automata maybe expected to differ widely from those in artificial automata.Also, it is likely that the memory requirements of the latter willtun out to be systematically more severe than those of theformer."

-J. von Neuman. Computer and the Brain. 1958.

22Wednesday Michael Faraday, 1791

23Thursday

24Friday

25Saturday

Sunday

20Monday

SEPTEM BEROCTOBER

"...we do not see in order to know the world, but toexist in it."

-G.W. Zopf. Sensory Hoomeostasis. 1963.

26Sunday Martin Heidegger, 1889

Yom Kippur

27Monday

28Tuesday

29WednesdaEnrico Fermi, 190Wednesday Frank Gilfeather, 184

Thursday

1Friday

2Saturday Aristotle, 384B.

UPSWINGER 3

Al,-

STAlb

T

END

ON- -

BI--,' -

110,

I

OCTOBERAn interesting and unexpected discussion of Zeno'sAchilles Paradox is to be found at the beginning ofChapter 22, Book 12 of Tolstoy's War and Peace.

3Sunday

4Monday

5Tuesday Denis Diderot, 1713

6l Wednesday La Corbusier, 1887

7Thursday Niels Bohr, 1885

8Friday George Westinghouse, 1885

9Saturday

OCTOBER

Lagrange's Theorem: The order of a subgroupalways divides the order of the group. The order ofthe cube is 227 x 314 x 53 x 72 x 11.

10Sunday

11MondayCOLUMBUS DAY

12Tuesday

13Wednesday

14Thursday

15Friday

16Saturday

OCTOBER"But Thought's the slave of Life,

and Life Time's Fool;And Time, that takes survey of all the World,

Must have a stop."-Shakespeare. Hostpur, Henry IV.

18Monday

19Tuesday Peter Max, 1937

17Sunday

21Thursday

22Friday

23Saturday

OCTOBER"Practically we percieve only the past, the pure,present being the invisible progress of the pastgnawing into the future."

- Henri Bergson. Matteriand Memore. 1911, p.194.

25Pablo Picasso, 1881M M onday Evariste Galois, 1811

26Tuesday

27Wednesday

28Thursday Erasmus, 188

29Friday

S30Saturday

24First working model of the BiivdsKockaSunday (Magic Cube) built by Erno Rubik, 1973.

sTALRT

es15 *�\O

END

v DOUBLE -11�CORNER-PAIR SWAPPER

OCTOBERNOVEMBER

"One Moment in Annihilation's Waste,One Moment of the Well of Life to taste..."

HALLOWEEN

31Sunday Karl Weierstrass, 1815

1Monday

Election Day

2Tuesday George Boole, 1815

3Wednesday

4Thursday

5Friday

6Saturday

NOVEMBERGary Meisters: Yes; 6 bars are possible.

Morwen Thistlethwaite has a computer solutionthat is only 52 moves long. Experts estimate thatGod's algorithm is 22 or 23 moves long.

7Sunday Marie Currie, 1867

8M onday Albert Camus, 1913

9Tuesday

10Wednesday Analytic Geometry born, 181

VETERAN'S DAY

11Thursday

12Friday James Maxwell, 183

13Saturday

NOVEMBERHofstadter's Law: Itexpect, even whenstadter's Law.

always takes longer than youyou take into account Hof-

15Monday Robert Fulton, 1765

16Tuesday

18Thursday

19Friday

201SaturdayI

17Wednesday

Sunday

NOVEMBER"motion does not produce time for use; it onlyproduces for us days, months, and years. Time, onthe other hand, exists per se, and is not an accidentconsequent upon motion."

- Ibn Abi Said, loth century writer.

21,Sunday

22Monday

23sTuesday

24Wednesday

THANKSGIVING

25Thursday

Friday Alice in Wonderland publ., -

27Saturday 1st Nobel Prize, l8i

4 BARS

STAl

T

END

NOVEMBERDECEMBER

"Mirror on mirror mirrored is all the show."-Yeats.

28Sunday William Blake, 1757

29Monday _______ I

IWednesday

2Thursday

3Friday

4Saturday Walt Disney, 1901

DECEMBER"...for the mind in creation is as a fading coal,which some invisible influence, like an inconsis-tent wind, awakens to transitory brightness... andthe conscious portions of our nature are un-prophetic either of its approach or its departure."

-Percy Bysshe Shelley.

5Sunday

8A Wednesday Herman Rorschach, 1884

9Thursday

11Saturday

7Tuesday Noam Chomsky, 1928J uesd y Leopold Kronecker, 18231

DECEMBER"...the reason why our senient, percipient, and thinking ego ismet nowhere within our world picture can easily be indicated inseven words: because it is itself the world picture. It is identicalwith the whole and therefore cannot be contained in it as a partof it."

-I. Schrodinger. Mind and Matter. 1959, Cambridge.

13Monday Nostradamus, 1503

14iTuesday Alex Eiffel, 1882

16Thursday Arthur C Clarke, 1917T rL. von Beethoven, 1770

17Friday

181SaturdayI

Sunday

DECEMBER"...the Cube has cosmic qualities. It has somethingof the laws of the universe in it. It is simple in formbut complicated in solution. It addresses questionsof order and chaos, of harmony and discord. Onemust search within oneself for one's own answer. Itbecomes a deeply personal thing."

Erno Rubik, 1981.

19Sunday Albert A Michelson, 1852

20Monday

Winter Solstice

21Tuesday

22Wednesday

23Thursday

2W941 Friday

CHRISTMAS DAY

o2

Saturday Isaac Newton, 1642

START

THE REPEAT GAME

times

END

al * *

DECEMBERJANUARY

The maximum cyclic subgroup order is 1260.

26Sunday Charles Babbage, 1792

Norbert Weiner, 1894

29Wednesday

30Thursday

27Monday Louis Pasteur, 1822

31Friday

28Tuesday Claude Levi-Strauss, 1908

NEW YEAR'S DAY

1Saturday

ADDnRES PHONENAME sw & .. sso

1982JANUARYM T1 W T F S S

4 56 78 91011 12131415161718 1920 21 22 2324

252 2 829303

FEBRUARY MARCH JAPRILMT T S T~WTF MTW FS

12 34 5 67 I 23 456 7 1 23 48 9 1011 1213 14 8 9 10 111213 14 5 6 7 ~8 9 10 1115 16 1718 19 20121 15 16117 181I9 2021 12 13141516 17 18

2222526228222324 252-6i27 28 19 20 21 2223 242529 30~31 622823

MAYMT W T F S S

1 23 4 5 6 7 8 910 11 12 13 14 151617 18 19 20 21 22 2324 25 26 27 28 29 3031

SEPTEMBERRMTWT F S S

1 234 56 7 8 9101112

13 14 15 16 17 18 19~2021 2223 24 252627 2829 30

JUNEM TW T

1 237 8 9,10

14 15 16 1721 2223 24

28230

OCTOBE-RM

41 11825

T

51 21 926

w

6132027

7

71 42128

FS S4 56

11 12 1318 19,2025 2627

F SS1 238 9 10

15 16 1722 23 24

29303

JULYMI

51 219C26

6132027

w7

142128

Tf18

152229

iT29

162330

310172431

Y4

1 11825

NOVEMBERM T WT F S S

8 9 10 111213 1415 16 17 18 19 202122 2324 25 2627 28

AUGUST

9162330

DI-m

6132027

T

310172431

'CIT

7142 128

w

I41I

18I25

MIw

I81152229

T

5121926C

7

6132027

S s

7 814 1521 2228 29

IER

9 10 111216 17 18 1923 24 2526

MEMO MEMO MEMO

Rubik's Cube Engagement Calendar, 1982.

Copyright©1981 by Jack Eidswick & and books

All rights reserved,No part of this book may be reproducedin any form without permission in writingfrom the copyright holder.

Published byand books702 South MichiganSouth Bend, IN 46618

Printed in the United States of America0 9 8 7 6 5 4 3

Additional copies available:the distributors702 South MichiganSouth Bend, IN 46618

ISBN: 0-89708-081-5 Belvedere. [Partial) Maurits Cornelis Escher, 1958.