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The most difficult Keebox. From the creator: “The puzzle has multiple steps and layers of complexity, providing 45 minutes to 2 hours of enjoyment, frustration, and excitement for puzzle enthusiasts.” See more details at https://keebox.ch/yellow.
Like new. Purchased directly from the creator. Solved a couple of times, carefully reset, and kept in a smoke-free home. Includes original box.
Located in the US; buyer pays shipping. PayPal (F&F) preferred.
