Dave Auckly’s Crunched Charms
Can you restore these crunched charms? A short introduction to knot theory by mathematician Dave Auckly.
View ArticleCol. George Sicherman’s Dice
How can you make a pair of Sicherman Dice -- that is, renumber a pair of dice so that they give you the same odds as a pair of standard dice?
View ArticleWorld Cup 2014: Puzzle 2 of 2
A puzzle by Marco Moriconi to celebrate the FIFA World Cup 2014.
View ArticleBram Cohen’s Straights and Flushes
Can you solve this card puzzle by BitTorrent protocol inventor Bram Cohen?
View ArticleRoderick Kimball’s Path Puzzles
See if you can weave your way through these original puzzles by the Flying Karamazov Brother Roderick Kimball.
View ArticleJoe Fendel: At the Video Store
What's the best way to choose a family movie? Try this challenge by Joe Fendel.
View ArticleDaniel Finkel’s Flying Squirrel-Frog
Will the squirrel-frog escape its feline pursuers? Test your powers of strategy and logic with this fur-raising challenge by Daniel Finkel.
View ArticleGordon Hamilton and Ariadne’s String
Can you help navigate a maze of columns in this puzzle inspired by a classic Greek myth?
View ArticleZandra Vinegar and Rafael Cosman’s Wide-Eyed Bullfrog Puzzle
How will the frogs breed? Check out this puzzle by Rafael Cosman and Zandra Vinegar.
View ArticleGary Hewitt’s Train Puzzle
How to decide where best to board your train, in a puzzle from Gary Hewitt.
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