The objective of this challenge is to check how the most fundamental cooperative skill (passing a ball between two players) can be acquired, and to evaluate merits and demerits of realized skills using the standard tasks.
This task focuses on a basic skill of cooperative behavior between two agents while task-I and -II focus on the basic skills of one single agent even though the environment includes other agents (possible opponents). If task-I and -II are successfully achieved, passing the ball between two players might become easy. That would mean a combination of passing and receiving skills. However, from a viewpoint of cooperative behaviors, there might be more issues.