Butterfly Lock Box – “Pleasure and Pain” Puzzle

A true masterpiece from mechanical puzzle legend Wil Strijbos, the Butterfly Lock Box —formerly known as Pleasure and Pain —is an uncompromising challenge crafted from precision-machined aluminum and steel. This isn't just a puzzle—it’s a personal journey filled with frustration, discovery, and triumph. The goal may sound simple: Turn the small "LOCK" tube over so it’s right-side up and return all other parts to their original positions. But achieving that goal is anything but simple. No banging, no rotating, no force—just a pure, methodical path of exploration. Every tiny movement matters. Each box is individually numbered and engraved with its name and Wil Strijbos’ signature, marking it as a collector’s treasure. And in true Wil fashion—no hints, no solutions. Only the bittersweet satisfaction of figuring it out on your own. A Note from the Designer – Wil Strijbos ➤ History of the Puzzle The idea for this creation struck me during a trip to Prague on September 13, 2013. The name Pleasure and Pain came later when I realized this puzzle would bring pleasure to a few and probably a good amount of pain to many others. ➤ Why “Butterfly Lock Box”? If you examine the backside closely,