arun shahi / Photos / Magdeburg :A robot of the Spainish SPIteam (University Rey Juan Carlos Madrid), left, challenges for the ball with the robot of the German team Bembelbots (Goethe University Frankfurt), right, during a soccer match in the Standard Platform League at the RoboCup GermanOpen 2012 in Magdeburg, central Germany, Saturday, March 31, 2012.More than 35 teams from 12 nations participate in the event and show their robots in four different leagues with soccer robots, rescue robots and service robots. The 11th RoboCup German Open 2012 take place