The “moving sofa problem,” a puzzle that has remained unresolved since it was introduced in 1966 and memorably illustrated in ...

A seemingly impossible math puzzle, discovered stuck to a tree by a passing hiker, has left the internet well and truly stumped. Despite living in an increasingly digital world, math remains something ...

Take the pressure off of problem-solving with engaging thinking games that encourage students to work together to find ...

After a week of hearing from readers, I am hopeful that our crossword puzzle problem has a solution. Last week, I wrote about the changes readers had noticed in The Daily Commuter crossword puzzle, ...

Everyone has climbed a ladder, right? At home or at work. Of all possible dangerous tasks, climbing a ladder is the most common. And it is risky. Approximately 164,000 emergency room visits occur ...

While puzzles are often seen as solitary activities, International Puzzle Day shines a light on their powerful social side.

Long before puzzles appeared in newspapers, apps or puzzle books, humans were already puzzling. The moment early humans began ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This disentanglement puzzle consists ...