Math Recreations

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Polyominoes
- Pentominoes
- Six Squares Problem
- My Polyomino Page
- A Dissection Puzzle
- Pentominos Puzzle Solver
- Puzzle Fun
- Java pentominoes
- Henri Picciottos Geometric Puzzles...
- Pentomino Dissection of a Square A...
- Gamepuzzles
- Pentomino Puzzles.
- A Pentominoes Project from Belgium
- Lego Pentominos
- The Soma Cube
- Pentomino Homepage
- Primes of a 14-omino
- Pentominos
- Polygon Puzzle
- Pentomino Covers
- Schröder Triangles, Paths, and Par...
- Pentominos
- Tiling of Pythagorean Triplets
- Three Nice Pentomino Coloring Problems
- Equilateral Pentagons
- Polyominoes
- Tesselating Locking Polyominos
- Pento-Mania
- Pentomino Relationships
- Packing Polyominoes
- Dancing Links
- Polyominoes: Theme and Variations
- Animal Enumerations
- Arnabs Pentominos Puzzle
- The Mathematics of Polyominoes
- Solomon W. Golomb
- Square into Similar Triangles
- Miroslav Vichers Puzzles Pages
- Packing Shapes
- Mathforum : Minimal Domino Tiling
- Tiling a Square With Eight Congrue...
- The Poly Pages
- Mathforum : Tiling Rectangles from Ell
- Mathforum : a Pentomino Problem
- Golygons
- The Pentomino Dictionary by Gilles...
- Polyiamonds
- Pentominoes : an Introduction
- Pentomino Applet
- Gerards Pentomino Page
- The Geometry Junkyard: Polyominoes
- Blocking Polyominos
- Flexagons
- Polyiamond Exclusion
- Polyform and Dissection Puzzle Links
- Christopher Moncktons Eternity Puzzle
- Rectifiable Polyomino
- Tiling Stuff
- Xominoes
- Polypolygon Tilings
- Polyominoids
- Polyforms
- Polyomino Applet
- Polyomino Tiling
- Polyomino Fuzion Game
- The Tiling Puzzle Games of OOG
- Thorleifs SOMA Page
- Tiling Rectangles and Half Strips ...
- Logical Art and the Art of Logic
- Livio Zuccas polyomino-covered cube
- Hyperbolic Planar Tessellations
- George Huttlins Puzzle Page
- Pairwise Touching Hypercubes
- Pentomino HungarIQa
- The Three Dimensional Polyominoes ...
- Knights Move Tessellations
- Hexiamonds
- Tiling with Notched Cubes
- Unbeatable Tetris
- Maximum Convex Hulls of Connected ...
- Polyomino and Polyhex Tiling
- Polyform Spirals
- Polyominoes
- Pentomino Applet
- Pento
- Golygons by Mathworld
- Eternity Page
- Annas Pentomino Page
- Counting Horizontally Convex Polyo...
- Cynthia Lanius Lesson: Polyominoes...
- Sqfig and Sqtile
- Taniguchis Programs
- Harold McIntoshs Flexagon Papers
- Hepto
- Information on Pentomino Puzzles
- Soma Cube Applet
- Isoperimetric Polygons
- Eithans Pentominoes-3D Applet Solver
- Flexagons
- Gerards Universal Polyomino Solver
- Pentamini Pentaminos Pentominoes
- What is a Golygon?
- Unfolding the Tesseract
- Unbalanced Anisohedral Tiling
- Tiling and Packing Results of Tors...
- Polyomino Enumeration
- Random Domino Tiling of an Aztec D...
- Canonical Polygons
- Somatic

- Mathematical Problems - Problem So...
- Recreational Mathematics
- HAKMEM
- The Nine Digits Page
- Fast Arithmetic Tips
- Mathematical Diversions
- Table of Numbers Problem
- Famous Curves
- Mathematics Museum (Japan)
- Mathematical Induction
- Recreational Mathematics Forum
- Eureka
- Rubiks Cube Lecture Notes
- Number Recreations by Shyam Sunder...
- The Diamond 16 Puzzle
- Recreational Mathematics Topics
- Geometric Packing Problems
- Who Can Name the Bigger Number?
- Math Forum: Algebra Problem of the...
- Narcissistic Numbers
- Math Magic By Computer
- Spirograph
- The Aesthetics of Symmetry
- CuriousMath
- Mathmos
- Mathematrix
- A Disproof of Pythagoras Theorem?
- Fun With Mathematics
- Treasure Troves : Book List
- MAA Library List in Recreational M...
- Back to Square One
- Recmath
- Fibonacci numbers and the Pascal t...
- Mathematical Lego Sculptures
- Origami Mathematics
- Math Forum: 2002 Mathematics Game
- Math Forum: 2001 Mathematics Game
- The Eugène Strens Recreational Mat...
- Recreational and Educational Computing
- Recreational Mathematics (David Ep...
- Roman Numerals
- SimonSingh.net
- Math in the Movies
- Sportlab
- Jlpes Number Recreations Page
- Critical Math
- A Mathematicians Aesthetics
- Gardner Index
- Sir Roger Penrose
- Skytopia - Super Magnet
- Final Answers
- Mathematik
- Mathematics in Art and Architecture
- David Singmaster: List of Availabl...
- Mathematical Quotation Server
- On the Puzzles with Polyhedra and ...
- Look and Say Sequence Generator
- Iamond
- Wade Edward Philpott
- How To Manually Find A Square Root
- Mathematical Spectrum
- Cryptarithms Online
- Fair Dice
- Mathematical Fiction
- Spirocharts
- Stunning Friends with Math Magic
- Wade Edward Philpott Collection
- Maze Classification and Algorithms
- One Metaphor Fits All
- Famous Curves Index
- Mudd Math Fun Facts
- Mathematische Basteleien
- Mathematical Quotation Server
- Properties of Dice
- The Sound of Mathematics
- MAT 007 I News

Games and Puzzles
- Math Puzzles
- Logic Puzzles
- Mathproblems.info
- Algebraic Math Puzzles
- MatheMajik
- Sequence Puzzles and Problems
- MatheMagic
- Logicville
- The Contest Center
- Puzzles of Leonid Mochalov
- The Enigmatic World of Philip Carter
- Archive Creative puzzles
- Mathematical Recreations
- Mathschallenge.net
- Group Games
- Magic Math Kingdom
- Mathematical Games
- Brain Teasers by QBrute
- Brain Teasers and Maths Puzzles
- Contest Center Cryptarithms
- Colorful Mathematics
- Dicks Math Puzzle Page
- Puzzle of the Week Archives
- A Primer on Cryptarithmetic
- Aha! Puzzles
- Polymorf - Symmetry of Polyhedra
- Nicks Mathematical Puzzles
- Free Puzzle Collections
- 15 Puzzle of Sam Lloyd
- Alphametics and Cryptarithms
- SMSU Problem Corner
- Mixed Up Math
- Perfect Times
- A+ Math
- Pythabacus
- Alphametic Puzzles
- Mathpuzzle.com
- AIMS Puzzle Corner
- Downloadable and online games
- The Little Math Puzzle
- Polyhedra Links
- Mathschallenge.net
- Nicks Mathematical Puzzles
- Wus Riddles
- The Puzzling World of Barry R. Clarke
- Storkey: Two Envelope Paradox
- Alien Tiles
- Ben Robinsons Cross-Number Puzzles
- Calculus-Help Problem of the Week ...
- Mathwizz
- Paul Hsiehs Puzzles
- Interactive Mathematics Miscellany...
- Alphametics Page
- Mr Titens More Than Math
- Nandors Exhaustive Chemical Words ...
- Torus and Klein Bottle Games
- Scott Kim

Competitions National
- Harvard-MIT Mathematics Tournament
- Mathematical Challenge
- Furman Mathematics Tournament
- Balkan Mathematical Olympiad
- The Continental Mathematics League...
- Dutch Mathematics Olympiad
- The Canadian Open Mathematics Chal...
- The Indian MO-Cell
- Bulgarian Competitions in Mathemat...
- Flanders Mathematics Olympiad
- Norwegian Mathematical Olympiad
- Irish Mathematical Olympiad
- Asian Pacific Mathematics Olympiad
- The Mandelbrot Competition
- UIUC Math Contests Webpage
- UCT Mathematics Competition
- Math League
- Polish Mathematical Olympiad

Competitions National (part 2)
- American Regions Math League (ARML)
- Redwood Empire Mathematics Tournament
- The Norwegian Mathematical Olympiad
- Canadian Mathematics Competition
- British Mathematical Olympiad
- SMS: Singapore Mathematical Olympiad
- AMATYC Student Math League
- MathCounts
- South Africa and the International...
- Canadian Mathematical Olympiad (CMO)

Tessellations
- Tessellations
- Grotesque Geometry
- The Geometry Junkyard: Tilings
- Symmetries, Patterns and Tessellations
- Escher Patterns
- Totally Tessellated
- Tessellations Using Geometers Sket...
- Squared Squares and Squared Rectangles
- The Seventeen Wallpaper Groups
- Intriguing Tessellations
- Tiling Plain and Fancy
- The 14 Different Types of Convex P...
- Catalogue of Isohedral Tilings
- Tessellating Wallpaper Patterns
- Frieze Patterns
- KaleidoTile
- Tessellated, Interlocking Concrete...
- Tessellation Links
- Symmetry and Pattern: The Art of O...
- References about Tessellations
- Penrose Tiles
- Tessellation and Photography
- 17 Wall Paper Symmetry Groups to C...
- Landry Art
- Symmetry and the Shape of Space
- Escher Web Sketch
- Samanthas Wallpaper Page
- Discrete Plane Symmetry Groups
- Chaos Tiles
- Tilings and Geometric Ornament
- Tessellation Tutorials by Suzanne ...
- The Penrose Tiling at Miami University
- Wallpaper Groups
- Artlandia SymmetryWorks
- Tessellations with Java
- Hyperbolic Tessellations
- Hops Escher Tessellation Tiles
- Gallery of Symmetric Chaos
- Java Penrose Tiler
- Java Kali
- Pentagons that Tile the Plane
- Mike Field
- Tessellations: Technology and Culture
- Symmetry and the Shape of Space
- Investigating Patterns: Symmetry a...
- Williams Geometric Construction Page
- TESS
- Hans Kuiper
- Quasi-Periodic Tilings

Magic Square
- Magic Squares
- Finding Magic Squares Using CCM
- Nested Magic Squares
- Siamese Method
- The Magic Encyclopedia
- Magic Cubes
- Constructing all Magic Squares of ...
- Multimagic Squares
- Prime Magic Squares
- PrimePuzzle #297. Queens on magic ...
- MathWorld: Magic Squares
- Generalized Magic Objects
- Magic Cubes
- Magic Square Puzzle
- Mathpages: Solving Magic Squares
- Skeleton Magic Squares
- The Anti-Magic Square Project
- The Zen of Magic Squares, Circles,...
- Simple Magic Square Checker
- Ulearn Today : article on Magic Sq...
- Science News for Kids: MatheMUSEments
- Math Forum: Multiplying Magic Squares
- Magic Cubes and Tesseracts
- MAA: Ivars Petersons MathLand: Mor...
- Grogs Magic Squares
- Amof: Info on Magic Squares
- Magic Squares
- Magic Squares
- Math Forum: Magic Squares Applet
- Magic Squares at Math Cats: Fun, E...
- Magic Squares, Magic Stars and Oth...
- Mathpages: Franklins Magic Squares
- Math Forum: Magic Stars
- Magic Squares by Edward W. Shinema...
- Magic Rectangles and Squares
- Allmath.com: Magic Squares Game
- All You Wanted to Know About Magic...
- A Very, Very Magic Square
- Magic Squares and Hyper Cubes
- Java applet
- The 3x3 Distinct Prime Magic Squar...
- Notes on Magic Squares
- The Magic Square Record
- The Perfect Solutions for the Magi...
- Visual Magic Squares and Group Orb...
- Math Forum: Suzanne Alejandre: Mag...
- Making Magic Squares
- MathWorld: Panmagic Square
- Program on Hyper Magic Cubes

Competitions Problem Archives
- Prof. W. Kahans Notes and Problems
- Problem Page
- Math Olympiads
- Math Olympiad Problems from Around...
- Putnam Problem Solving
- Mathematics Problem Solving
- Problem Writing For Mathematics Co...
- Kalva
- Madras College Mathematics Departm...
- USSR Math Olympiad, 1961-1986
- Resources for the Putnam Mathemati...
- Tournament of Towns at Toronto
- Singapore International Mathematic...
- IMO Problems
- Olympiad Math Madness
- Union College Putnam Club
- International Mathematical Talent ...

Specific Numbers
- Square root of 2
- Just Who is Mr. 666?
- World of Numbers
- Fun With Numbers
- 37 Heaven
- Number Gossip
- Vampire Numbers
- Fibonacci Numbers and the Golden s...
- Catalans Constant - G
- Mathemagic
- Bruns Constant
- The Golden Pentagon
- Jewish Encyclopedia: Numbers and N...
- Triangular Numbers
- Absolutely Abnormal Numbers
- Verbose.net
- Euler-Mascheroni Constant - g
- Sum Beastliness
- Favorite Mathematical Constants
- RJNs More Digits of Irrational Numbers
- Pi Squared over Six
- Inverse Symbolic Calculator
- Catalan Number -- MathWorld
- Heilbronn Triangle Constants
- Ask Dr. Math: History of the Terms...
- FAQ on Special Numbers
- Arabic numerals
- Apérys Constant
- Feigenbaum Constants
- Indian numerals
- Notable Properties of Specific Numbers
- Friedmanns S-Numbers
- Mathematical Constants and Computation
- Stewys Site
- Wikipedia - Mathematical constant

Specific Numbers Pi
- Fun With Pi
- The Uselessness of Pi and its Irra...
- Three141, a BBP Ruby implementatio...
- A Common Book of Pi
- Dales Pi Page
- The Ridiculously Enhanced Pi Page
- Pauls Page of Pi
- Pi Through the Ages
- Earth Mysteries : Notes on Pi
- Calculating Pi
- Pi, Pi, Mathematical Pi
- The Joy of Pi
- The Pi Song
- Pi Land
- Ask Dr. Math: About Pi
- Lucy Scale Developments
- How Pi?
- Your Piece of the Pi
- A New Approach to the Universal Co...
- Ask Dr. Math - Pi
- Buffons Needle
- Pi Patterns
- Pi Approximation Day
- Pi 3.1416
- Pi-Dye : Pi and Math T-Shirts and ...
- Land of Pi
- Indiana Pi Bill
- Elias Pi Page
- The Constant Pi
- Pi World Ranking List
- The Magic Piworld
- The Pi Pages
- The Pi Trivia Game
- Harry Smiths Brief History of Pi C...
- History and Philosophy of Pi
- A Tribute to Pi
- A Slice of Pi Home Page
- How Stuff Works: Pi
- Ancient Pi: Knowers of the Universe
- Pi Memorama

Games and Puzzles Problem of the Week
- Math Forum: Geometry Problem of th...
- PuzzleUp
- Problem of the Month
- Mathematics Problem Solving Task C...
- Math Forum: Math Fundamentals Prob...
- Dansmath Problem of the Week
- Math Forum: Problems of the Week
- Monthly Problem
- John Handley High School Problem o...
- Math Magic
- Stony Brook Problem of the Month
- Math Forum: Algebra Problem of the...
- Bradley University Problem of the Week
- Ken Duisenbergs Puzzle of the Week
- Problem of the Fortnight
- Trent University Problem of the Week
- Purdue University Problem of the Week
- Math Forum: Discrete Math Problems...
- Columbus State University - Proble...
- Macalester College Problem of the Week
- IBM Research Ponder This

Competitions International
- Australian Primary Schools Mathema...
- Countries with Olympiad Sites
- Math Olympiad for Elementary Schools
- International Math Competition for...
- Rocket City Math League
- Vojtech Jarnik Mathematical Compet...
- IMO and National Olympiads
- William Lowell Putnam Competition
- Singapore International Mathematic...
- IMO 2006
- Mental Calculation World Cup 2004
- IMO and Other Competitions
- IMO 2004
- IMO 2003
- IMO Network
- IMO 1996
- IMO 2001
- IMO 2000
- IMO 1997
- IMO 1995
- IMO 1999

Specific Numbers Fibonacci Numbers
- Fibonacci Quarterly
- Fibonacci Facts
- Fibonacci Sequence
- Fibonacci Number-Theorists
- 10th International Conference on F...
- Fibonacci Numbers
- Fibonacci and Lucas Numbers
- Animation of Binets formula for Reals
- The Fibonacci Association
- Amof:Info on Fibonacci Sequences
- Fibonacci and Lucas Factorizations
- Fibonacci Numbers, the Golden Sect...
- Fibonacci resources
- The Life and Numbers of Fibonacci
- Extensions of the golden section a...
- Fibonacci Numbers
- Textism
- Fibonacci Numbers Formulae
- Willems Fibonacci site
- Fibonacci Numbers and the Golden S...
- Mongoven, Casey
- Fibonacci Numbers, Phi and the Gol...
- Fibonacci Numbers Spelled Out

Specific Numbers Integers
- The Mystery of The Number 27
- The 47 Society
- All Numbers Are Interesting
- Curious properties of 153
- Number Facts and Trivia
- Count the Number of the Beast: 666
- Seventeen and Yellow Pigs

Specific Numbers Integers (part 2)
- 37 Heaven
- 666
- One
- Nine
- Numbers
- The Number of the Beast
- Whats Special About This Number?
- Four
- About Big Numbers
- Bobs Positive Integer Pages
- Jewish Encyclopedia: Forty, the Number
- Number of the Beast

Specific Numbers phi
- The Golden Ratio
- The Golden Ratio
- Golden Number
- The Golden Mean
- The Golden Ratio
- Golden Rectangle
- 10,000 Digits
- Ask Dr. Math
- Colin and Gregs Golden Ratio Page
- The Phi-Nest
- The Golden Mean by Jerry Bonnell a...
- The Golden Section - the Number an...
- The Golden Ratio and The Fibonacci...
- Golden`s Section Formulas
- 20,000 Digits
- American Phi
- A brief introduction to Golden Ratio
- Phi: That Golden Number
- Constructing the Golden Rectangle
- The Golden Ratio: A Golden Opportu...
- The Golden Section
- The Greeks and the Golden Mean
- The Golden Ratio
- Division in Mean and Extreme Ratio
- Ask Yahoo
- The Golden Mean

Competitions Online Contests
- Paper Challeran
- Online Math Madness
- Crazy for Math Online Contest
- International Mathematical Talent ...
- Florida-Stuyvesant Alumni Mathemat...
- International Mathematics Tourname...
- MATHmodels
- USA Mathematical Talent Search (US...
- ABACUS International Math Challenge
- International Space Visualization ...
- Mathematical Contest in Modeling (...

Specific Numbers Digits
- Beauty
- Is Pi normal?
- Am I in Pi
- Ramanujan, Modular Equations, and ...
- How to Memorize Pi
- The 2 Club
- Search within Pi
- Search for strings within Pi
- Pi Memorize
- Search Pi to 40 Million Digits
- Search for your Name in the Digits...
- Science News Online: Pi à la Mode
- Pi
- The Search for Intelligence in Pi
- Bailey and Crandalls article on t...
- The 1000 billionth binary digit of...
- The 100-Club
- Are the Digits of Pi Random?
- Project Gutenberg Pi Listing

Competitions Training
- Problem Solving References & R...
- Ravi Vakil (Stanford)
- Mathematics Olympiad Lecture Notes
- Madras College Mathematics Departm...
- Greg Martin (UBC)

Competitions
- Mathematics Archives
- Australian Mathematics Trust
- Valentin Vornicus MathLinks
- Math Competitions in USA
- Putnam Exam Information
- Crux Mathematicorum with Mathemati...
- American Mathematics Competitions

Famous Problems Monty Hall
- The Monty Hall Problem
- Marilyn is Tricked by a Game Show Host
- Marilyn Vos Savants Monty Hall Problem
- Monty Hall : Explanations of Solution
- Lets Make a Deal Strikes Again
- The Straight Dope: On "Lets M...
- Monty Hall
- Mathnet : The Car and the Goats
- The Infamous Monty Hall Problem
- Monty Hall Dilemma
- A New Approach to the Monty Hall P...
- Cheap Monty Hall

Specific Numbers Software
- Stus pi page
- Computing Pi
- PiHex
- Pi at Multiple Dimension
- Jasonps Pi programs
- The Hfloat Page
- SourceForge.net: Project Filelist
- HiPiLib - High Performance Libraries
- Efgs Computer Lab: Buffons Needle...
- Armpi 4 for the ARM processors
- Archimedes And The Computation Of Pi
- Roys Pi Page
- Martins Pi Page
- Austins Wasted Cycles


Specific Numbers e
- Some History Surrounding e
- Hunting e
- The Beauty of e
- Exponential and Logarithmic Functions
- The Constant e
- E the EXPONENTIAL - the Magic Numb...
- Exponential Review
- The Base for Natural Logarithms
- The Scales Of e
- The Natural Logarithmic Base
- The Eulers Number Home Page
- Esquared

Competitions Minnesota
- Minnesota Junior High School Mathe...
- Minnesota High School Math League
- SCSU Math Contest
- Math Masters of Minnesota
- Minnesota MathCounts

Competitions California
- Stanford Math Tournament
- Bay Area Math Circle
- Pomona College / University of Wis...
- Santa Clara University High School...
- Bay Area Math Meet

Flexagons
- Flexagons
- Hexaflexagon Toolkit
- Flexagon Reflexions
- Flexagons
- Flexagons
- Flexagons

Competitions Australia
- UQ/QAMT Problem Solving Competition
- Queensland Mathematics Competitions

Competitions Alabama
- Alabama Statewide Mathematics Contest
- The University of Alabama High Sch...
- Grissom High School Math Team
- Rocket City Math League

Specific Numbers Calculation
- Archimedes Approximation of Pi
- One Billion Digits of Pi
- Bailey on Pi
- David Baileys Pi Directory
- Fabrice Bellards PI page
- Pi Calculations by the Buffons method
- John Mathews bibliography for Comp...

Famous Problems Tower of Hanoi
- Tower of Hanoi
- François Edouard Anatole Lucas
- Patterns in the Towers of Hanoi So...
- Discovering the Mathematics Behind...
- Ask Dr. Math : Tower of Hanoi
- Towers of Hanoi in sendmail.cf

Specific Numbers Infinity
- Hotel Infinity
- Mathnet : Does "Infinity"...
- Hector Parrs Essays: Infinity
- The Infinity
- Counting to Infinity
- Infinity

Competitions Maryland
- Johns Hopkins University High Scho...
- University of Maryland Math Compet...

Competitions Georgia
- University of Georgia High School ...
- Gainesville College Math Tournamen...
- Armstrong Atlantic State Universit...

Specific Numbers Poetry
- Poe, E.: Near a Raven
- Pi Poetry & Piaku
- PI Poem by Jesse Campbell
- Lizs Pi Poems
- Digit Connection

Competitions Texas
- Texas MathCounts
- Rice Mathematics Tournament
- Rice Mathematics Tournament

Competitions Indiana
- Indiana State Mathematics Contest
- High School Math Contest
- Rose-Hulman High-school Mathematic...

Competitions Missouri
- St. Louis Community College
- Great Plains Math League
- Math Field Day

Competitions Singhs Code Book Challenge
- The Cipher Challenge
- Code Book Cipher Challenge Solutio...
- Plus Magazine - Singhs "Code ...

Famous Problems Online
- Tower of Hanoi
- Mathnet : The Tower of Hanoi
- Thinks.com - Tower of Hanoi

Specific Numbers 0 - Zero
- The Digit Zero
- Zero in Four Dimensions
- Zero

Famous Problems
- U of T Mathematics Network
- The Knights Tour Links Page

Competitions North Carolina
- North Carolina State Mathematics C...


Competitions South Carolina
- University of South Carolina High ...

Competitions Massachusetts
- WPI Invitational Math Meet

Competitions New Jersey
- New Jersey Math Counts

Competitions Louisiana
- Louisiana State University Mathema...

Competitions Oklahoma
- OSU High School Math Contest

Competitions Kentucky
- Kentucky MathCounts

Competitions Canada
- New Brunswick Math Competition

Competitions New Mexico
- UNM-PNM Statewide Mathematics Contest

Competitions Illinois
- Illinois Council of Teachers of Ma...

Competitions Florida
- David Essner Mathematics Competition

Competitions Wisconsin
- Wisconsin Mathematics, Engineering...

Competitions Ohio
- Calculus Competition