The RoboCup Soccer Small Size League (SSL) is one of the oldest RoboCup Soccer leagues. It is focused on intelligent multi-agent coordination and control in a highly dynamic environment. Teams currently compete in 11 vs. 11 soccer matches (6 vs. 6 in division B) with an orange golf ball. The robots are built by the teams and have to conform to certain dimensions and constraints, as defined in the rules. All objects on the field are tracked by a central vision system – called SSL-Vision – which is maintained by the SSL community. Off-field computers for each team are used for the processing required for coordination and control of the robots. Communication is wireless and uses dedicated commercial radio transmitter/receiver units.