It was a great puzzle. Very challenging and difficult for my 10 year old nephew. He got frustrated and scammed looking for a solution to the first part and the rest is pretty easy. This is definitely something that a 10 year old would take at least 4-5 hours (unassisted) to complete. In the end it turned out very neat. It opened and closed so it was functional. So if he broke through, that would be perfect.
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