It might not seem like there's enough information to solve these logic puzzles—but that's part of the fun!

Earlier this month, 36 sharp-witted high school students from around the globe stepped foot on the warm and breezy campus of Stanford University. Out of more than 4,000 students from more than 2,000 ...

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