During the blustery cold days and cozy nights this winter, there’s no better time to rediscover the simple pleasures and quiet joys of indoor activities that help you relax and reconnect with family.

Gregory Treverton, a national security expert at RAND Corporation, famously distinguished between two types of problems, puzzles and mysteries. He was describing the modern challenges faced by the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

The chessboard has been the source of many ingenious puzzles that involve spatial reasoning and insight thinking. The seven ...

Security pros tackle tough problems every day, from breach investigations to niche technical issues to strategy and policy development. The key to maintaining and improving these critical ...

Almost exactly a year ago, I posed a card puzzle here that sparked a frenzy in the comments section. The solution to that puzzle was so counterintuitive that several readers rejected it outright. In ...

At the beginning of freshman year my floormates and I bought a puzzle together. It doesn’t seem like a noteworthy act of rebellion or a radical move in any sense, but for me, it was life-changing.