In this paper; we describe Cornell BigRed; the team of Robot Soccer competition that we developed to attend the RoboCup competition. The project entails the construction of fully autonomous; fast moving robots which will work together as a team in an eort to compete against similar teams of robots in a robotic soccer match. We designed and built the robots and the image processing algorithm; and developed the game strategy for the many situations and the articial intelligence for collaboration between the robots. To provide a realistic testing platform for our articial intelligence system; we have constructed a simulation of the playing eld. The simulator has provided a means of testing the articial intelligence play-by-play even before our robots were fully constructed.