David L. Reens ’11, Brandon T. Lew ’11, and Allen S. Yin ’11 of team 10 retract their robot’s wall after a match during the 6.270 final competition on Jan. 31. Many teams employed defensive strategies such as this, yet walls often led to scoreless matches that resulted in losses for both teams. 6.270 is an IAP class for MIT students where participants design and build a robot using LEGOs.