When puzzles were first invented, they were made out of wood, and carpenters used jigsaws to cut the pieces (which explains how they got their name). Perhaps that’s why it feels so good when you put a ...

As a kid I loved doing puzzles with my father, especially around the holidays. We would get a giant jigsaw — usually an old-timey Christmas image filled with people ice-skating and horse-drawn ...

After nearly two full days of note taking and digesting advanced research topics, I opted for a slight break for my brain. In a symposium entitled "Design of Mechanical Puzzles," various speakers ...