To make a mechanically controlled robot to assemble freight cars and join them to form a train.
The arena will have freight cars in different parts of the arena containing obstacles. The robot has to guide each one of them, one at a time, and align them back to back to form a train in a specified corner of the arena. Or the robot can form a train by collecting the freights together and then reach its destination. The participating robot should be able to hook itself to the freight and guide it to the previous freight. It should have a mechanical design to hook itself with the freight. Magnets/electromagnets are not allowed onboard in any form to guide the freights.