15 Puzzle of Sam Lloyd
Play online Sam Lloyd's "15" puzzle The funny story of this game Mathematical implications of this game Some funny logical problems with the 15 game.
Aha! Puzzles
Puzzles, books, games and tests with designed by Lloyd King, author of "Test Your Creative Thinking".
Algebraic Math Puzzles
A collection of puzzles at high school level. Does not include answers.
Alien Tiles
Object of puzzle is to try to get color pieces to create certain patterns in cube.
Alphametics and Cryptarithms
Puzzles in which letters or symbols are substituted for the digits in an arithmetical operation like addition.
Archive Creative puzzles
Interactive puzzle archive with descriptions for puzzle construction and a special childrens puzzle page.
BCIT Mathematical Entertainment
Famous mathematical problems, puzzles, facts, games and trivia.
Brain Teasers and Maths Puzzles
Interactive logical and mathematical puzzles with feedback and detailed solutions.
Contest Center Cryptarithms
Examples of cryptarithms, with prize competitions for subscribers.
Curious Numbers
A tribute to the lighter side of math including puzzles, humor, trivia, quotes, inspirations, and math links.
Logic 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…
Mathproblems.info
Over one hundred and fifty math problems ranging from basic math to differential equations.
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