Challenge yourself with Popular Playthings Interlock, the plug-and-socket puzzle;Use blocks from the Interlock set to match the shape shown on the challenge card, without leaving any plugs or sockets showing;Includes 12 interlocking puzzle pieces and challenge booklet with instructions and solutions;For ages 8 to adult;Popular Playthings provides award-winning toys that encourage learning, creativity, social interaction, and good old basic fun

• Popular Playthings Interlock Brainteaser Puzzle

Popular Playthings Interlock Brainteaser PuzzlePlaSmart, Inc.