How was the slice made? If the cube’s side is half an inch, what is the side of the hexagon? After dropping the cube into his coffee, the engineer turned his attention to a doughnut lying flat on a ...

Coffee break Like these emoji riddles, logic puzzles will test your smarts and keep you guessing. Emoji riddle: Yucky ...

Think you're good at math? These 30+ puzzles look simple — until your brain starts to bend in ways you didn’t expect. Most ...

In only its second year, the International Logic Olympiad is already booming as logic becomes more and more crucial in our ...