Gathering 4 Gardner
A nonprofit celebrating puzzle popularizer Martin Gardner, hosting free videos, articles, and puzzle collections from the recreational mathematics community he inspired.
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Top 10 Martin Gardner Physics Stumpers
A list of ten physics puzzles from Martin Gardner's writing, assembled for his centennial, each a brainteaser that rewar…
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Science
Industrious Dice
Mathematician James Propp explores a puzzle about dice that do more than their share of work, a playful essay on probabi…
Tanya Khovanova's Math Page
Home page of a mathematician with popular essays, puzzles, number-theory curiosities and a weekly math blog, covering ma…
QEDCat
The site of mathematicians Burkard Polster and Marty Ross, packed with playful recreational math articles, videos, and p…
Chains
Chains is one of Nathan Broadbent's free daily word puzzles, a quick brain teaser built around linking words together, w…
Regex Crossword
A puzzle game where crossword clues are regular expressions, teaching regex pattern matching through progressively harde…
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