Popular Playthings Interlock is a super-fun plug-and-socket puzzle your whole family will love. Select a challenge card with an illustrated shape. Match that shape using the blocks you select from the Interlock set of 12. Each block has one plug and one socket in a unique location, which makes this puzzle tricker than it might seem at first glance. When the puzzle is solved, each plug will fill a socket, and the completed shape will have no visible plugs or sockets. If things aren't connecting for you, complete solutions are provided in the puzzle booklet. For ages 8 and up. Popular Playthings provides award-winning toys that encourage learning, creativity, social interaction, and good old basic fun.
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