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The Lock Picking Lawyer cracked the Loki, our hardest puzzle, in 16 minutes and 45 seconds. I thought he had X-ray vision. It turned out to be the best compliment the Loki could get.

Heard the term "sequential discovery puzzle" but not sure what it means? Boaz explains it in plain English: how it works, how it differs from a trick lock, and which Puzzlocks are which.

Hikers love real, unplugged time and a challenge that's their own. A compact puzzle lock delivers that off-grid: no battery, no signal, just a problem to solve.

Lego lovers love how pieces fit together and how a mechanism clicks into place. A puzzle lock offers the same hands-on mechanical pleasure, just in reverse.

Chess players win through strategy and reasoning, never luck. A puzzle lock scratches the same itch: a sequence you reason out, one correct move leading to the next.