You have to create a power relay chain from the source to the light bulb. Both the source as the relays have a scope, that is visible as a dotted circle; the goal is to move the relays to make a chain of connected circles from the source to the lay. | Click at the wooden objects to make them disappear. If you do it in the right order, the relays will be moved to positions that enable to connect the source to the light bulb. |