Brain Teasers 15
Magic Square 49
Problem of the Week 21
Rubik's Cube Solutions 27
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 A+ MathA+ Math
 Interactive math help for K-12 students with flashcards, Math Wordfind, Homework Helper and worksheets.
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Aha! PuzzlesAha! Puzzles
 Puzzles, books, games and tests with designed by Lloyd King, author of "Test Your Creative Thinking".
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AIMS Puzzle CornerAIMS Puzzle Corner
 Provides over 100 puzzles with the goal of creating an engaging learning environment.
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Algebraic Math PuzzlesAlgebraic Math Puzzles
 A collection of puzzles at high school level. Does not include answers.
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Alien TilesAlien Tiles
 Object of puzzle is to try to get color pieces to create certain patterns in cube.
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Alphametic PuzzlesAlphametic Puzzles
 Numerous puzzles, links, puzzle solver, and a generator.
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Alphametics PageAlphametics Page
 Compiled by Mike Keith. Examples of various genres.
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Ben Robinson's Cross-Number PuzzlesBen Robinson's Cross-Number Puzzles
 A collection of cross-number puzzles: similar to crosswords, but using digits instead of letters. Many involve complex mathematical reasoning.
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Brain Teasers and Maths PuzzlesBrain Teasers and Maths Puzzles
 Interactive logical and mathematical puzzles with feedback and detailed solutions.
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Brain Teasers by QBruteBrain Teasers by QBrute
 Original brain teasers with solutions.
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Calculus-Help Problem of the Week ArchiveCalculus-Help Problem of the Week Archive
 Calculus based problems range from easy to difficult.
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Colorful MathematicsColorful Mathematics
 Educational software presents advanced mathematics to K-12 students in a game-oriented approach, using coloring and drawing techniques to illustrate concepts from graph theory and computer science.
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The Contest CenterThe Contest Center
 Classic puzzles and riddles requiring only simple logic and elementary math.
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Contest Center CryptarithmsContest Center Cryptarithms
 Examples of cryptarithms, with prize competitions for subscribers.
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Creative puzzlesCreative puzzles
 Interactive puzzle archive with descriptions for puzzle construction and a special children's puzzle page.
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Dick's Math Puzzle PageDick's Math Puzzle Page
 A collection of mathematical puzzles, some original, with fully worked solutions.
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Downloadable and online gamesDownloadable and online games
 A variety of Flash- and Java-based games and puzzles.
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The Enigmatic World of Philip CarterThe Enigmatic World of Philip Carter
 Collection of brain teasers from the author of IQ books.
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Free Puzzle CollectionsFree Puzzle Collections
 Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. Solutions are available to members.
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Group GamesGroup Games
 Animations that develop the theory behind such puzzles as the Rubik cube.
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Interactive Mathematics Miscellany and PuzzlesInteractive Mathematics Miscellany and Puzzles
 Java-based math resource including articles, puzzles and links.
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The Little Math PuzzleThe Little Math Puzzle
 The Little Math Puzzle has been a K-12 Internet activity since 1995 for grades 5-9. Currently the puzzles have ceased but the site maintains complete archives of past problems.
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Logic PuzzlesLogic Puzzles
 Collection of original numerical-logic puzzles. Many are long and difficult, involve sorting and comparing long lists and are intended to be solved using a good spreadsheet program.
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LogicvilleLogicville
 Educational puzzles, brain teasers, and word games such as anagrams, cryptograms, alphametics, doublets, tangrams.
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Magic Math KingdomMagic Math Kingdom
 Learn math through games and quiz-oriented tutorial.
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Math PuzzlesMath Puzzles
 Logic puzzles and riddles with some solutions.
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MatheMagicMatheMagic
 A collection of mathematical puzzles, jokes and articles.
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MatheMajikMatheMajik
 Indian site featuring calculation tricks and math puzzles.
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Mathematical GamesMathematical Games
 A collection of pencil and paper games with mathematical content. Many can be played through the site.
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Mathematical RecreationsMathematical Recreations
 Detailed exploration of a selection of mathematical topics.
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Mathproblems.infoMathproblems.info
 Over one hundred and fifty math problems ranging from basic math to differential equations.
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Mathpuzzle.comMathpuzzle.com
 Celebrates math puzzles and mathematical recreations.
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Mathschallenge.netMathschallenge.net
 A website dedicated to the puzzling world of mathematics, with a discussion forum.
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MathwizzMathwizz
 Interactive math problems for abilities ranging from middle school to university.
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Mixed Up MathMixed Up Math
 Logic problems, where equations are mixed up. In various formats like boxes, crosses, diagonals, mazes. Free download.
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Mr Titen's More Than MathMr Titen's More Than Math
 Mathematics teacher provides puzzles for students.
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Nandor's Exhaustive Chemical Words PagesNandor's Exhaustive Chemical Words Pages
 Lists all the English words, word squares, and magic squares that can be written using chemical symbols.
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Nick's Mathematical PuzzlesNick's Mathematical Puzzles
 A collection of puzzles, with hints, solutions, and links to related mathematical topics.
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Paul Hsieh's PuzzlesPaul Hsieh's Puzzles
 Logical and mathematical brain teasers, with an indication of difficulty. Hints are provided; solutions are available by email.
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Perfect TimesPerfect Times
 Teaches and assesses fluency of multiplication and division tables using online cards. Submit data and compare results.
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Polyhedra LinksPolyhedra Links
 Pastime and activity links for various geometric patterns, polygons and polyhedra by Jill Britton.
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Polymorf - Symmetry of PolyhedraPolymorf - Symmetry of Polyhedra
 A demonstration of the symmetry and transformational properties of the Platonic and Archimedean solids.
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A Primer on CryptarithmeticA Primer on Cryptarithmetic
 Instructions, examples, references and links.
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15 Puzzle of Sam Lloyd15 Puzzle of Sam Lloyd
 Play online Sam Lloyd's "15" puzzle. The funny story and mathematical implications of this game. Some funny logical problems with the 15 game.
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Puzzle of the Week ArchivesPuzzle of the Week Archives
 A collection of puzzles, with hints and full solutions. Compiled by George Moody.
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Puzzles of Leonid MochalovPuzzles of Leonid Mochalov
 A variety of challenging geometrical and arithmetical puzzles, many with solutions.
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The Puzzling World of Barry R. ClarkeThe Puzzling World of Barry R. Clarke
 Brain teasers, articles and puzzles forum.
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PythabacusPythabacus
 Description and instruction of using the ancient Pythagorean Abacus to do arithmetic.
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Scott KimScott Kim
 Puzzles for web, computers, and print; ambigrams.
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Storkey: Two Envelope ParadoxStorkey: Two Envelope Paradox
 A tough but simply defined problem which demonstrates key issues in probability.
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Torus and Klein Bottle GamesTorus and Klein Bottle Games
 Collection of Java-based educational puzzles.
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Wu's RiddlesWu's Riddles
 A collection of riddles, puzzles, and technical interview questions, with a discussion forum.
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