Cut the knot: learn to enjoy mathematics
A math books store at a unique math study site. Learn to enjoy mathematics.
Google
Web CTK
Best sites for teachers
Sites for teachers
Sites for parents
Terms of use
Awards

Interactive Activities
CTK Exchange
CTK Insights - a blog

Games & Puzzles
What Is What
Arithmetic/Algebra
Geometry
Probability
Outline Mathematics
Make an Identity
Book Reviews
Eye Opener
Analog Gadgets
Inventor's Paradox
Did you know?...
Proofs
Math as Language
Things Impossible
Visual Illusions
My Logo
Math Poll
Cut The Knot!
MSET99 Talk
Other Math sites
Front Page
Movie shortcuts
Personal info
Reciprocal links
Privacy Policy

Guest book
News sites

Recommend this site

Best sites for teachers
Sites for teachers
Sites for parents

Education & Parenting

Manifesto: what CTK is about Search CTK Buying a book is a commitment to learning Table of content Things you can find on CTK Chronology of updates Email to Cut The Knot Recommend this page

Interactive Mathematics Miscellany and Puzzles

Math Games and Puzzles

Farmer and wife to catch rooster and hen. Sam Loyd's puzzleFarmer and Wife To Catch Rooster and Hen Coins are arranged in a chain and removed from either end. The player with the larger amount wins.
Coin Game
Reassemble the body of a caterpillar by placing its segments in the right orderMetric measurement units By adding positive or negative weights on either side attained a ballanceAlgebra on a two sided balance
Flip a fixed number of items at a time, but eventually flip  all of themFlipping Items Simultaneously Make blue and red horses swap their places4 Knights
Make all the calculations before the wolf catches the rabbitArithmetic operations By picking the right combination of vectors help the joker climb up to the ballVector operations
3D Toc Tac Toe4×4×4 Tic Tac Toe The silver dollar game - one of the combinatorial fascinationsSilver Dollar Game
However you tile the hexagon with rhombi, the number of rhombi of each orientation is the sameTiling a Triangulated Hexagon Turning turtles - another combinatorial gameTurning Turtles
Mastermind with variable number of holes, colors, and other modificationsMasterMind SuperNim - 2D variant of the gameSuperNim
3-Chain - place three chips in a row and win3-Chain Computer plays Mastermind. Watch outComputer Mastermind
Northcott's game - a classic combinatorial entertainmentNorthcott's game Relabel the mislabeled boxesBox Labels
Calendar magic and a very good arithmetic exerciseCalendar Magic Peg solitairePeg Solitaire
The fish soup game. It's all about different representationsFish Soup Game Grundy's gameGrundy's Game
A puzzle simulation of Josephus Flavius's storyJosephus Flavius' Game Looping chips: can you arrange them in a different order?Looping Chips
Built, print, solve a mazeCreate and print out mazes The jumping frogs and toads are to exchange placesToads And Frogs Puzzle
A tromino puzzle and theoryTromino Puzzle A curious isoperimetric theoremAn Isoperimetric Theorem
Play and learn about barcodes, ISBN and other encodingsBarcode Magic A Monty Hall SimulationWho needs Monty?
Sierpinski gasket by trema removalSierpinski gasket by trema removal Iterated Functions System: design and draw fractalsIterated Functions System
Parrondo's Paradox: two losing games combine into a winning oneParrondo's Paradox The Japanese Soroban, but in various number systemsSoroban in Various Number Systems
Suan pan: the Chinese abacusSuan Pan in Various Number Systems Have you seen impossible things?An impossible structure
Color Balls: a logic gameColor Balls An old puzzle: get wolf, goat and cabbage to the other river shoreAn old puzzle
Concentration: a memory gameMemory Sam Loyd's FifteenSam Loyd's Fifteen
The Full House PuzzleFull House Sliding Coins PuzzleSeven Coins Puzzle
Mirror MazeMirror Maze A Broken CalculatorA Broken Calculator
Hare and HoundsHare and Hounds Make an IdentityMake an Identity

... and dozens more ...

Copyright © 1996-2008 Alexander Bogomolny

28676758Page copy protected against web site content infringement by Copyscape


Search:
Keywords:


Latest on CTK Exchange
Math
Posted by Laura
2 messages
06:56 AM, Apr-15-08

Divisibility rules - Jargon buste ...
Posted by Carolyn
2 messages
08:35 AM, Apr-04-08

product of fractions
Posted by ke_45
3 messages
08:37 AM, May-06-08

Distance to the horizon
Posted by Monty
3 messages
04:38 PM, May-08-08

Mistake on the page (an aside, Be ...
Posted by Max
4 messages
10:28 AM, Feb-28-08

Nim Games - a query
Posted by Akash Kumar
1 messages
08:53 AM, Apr-15-08

A typo in
Posted by alexwajn
1 messages
11:36 PM, Apr-19-08