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.The puzzle was bought from the creator directly and I am the first owner. It is like new, solved a couple of times and carefully reset. Original box included.The puzzle is located in the US. Buyer to pay shipping. PayPal F&F preferred.
$70.00