Welcome to Interlock, The hide the plug and socket puzzle! There are 50 shapes to build arranged easy to hard. Each challenge illustration lists the number of pieces needed to make the shape and the number of possible solutions. If you get stuck, we provide a multi-part hint for each challenge. If your plugs and sockets aren't connecting, a complete solution for each challenge is provided. So, what are you waiting for? Pick a block and start plugging! Contents: 12 building blocks, challenge booklet with instructions and solutions.

Delivery : Fast despatch from large stocks held in our own warehouse.