 The console did not have a method to check for collisions between tiles, and the task of checking all points around a tile for possible collision points was too difficult for the game's MOS Technology 6502, To compensate for this, the designers put boundary boxes around objects and compare a limited number of collision boundaries.Mario's sprite has two points, one on each foot, each detecting his collision with the floor.The game would normally eject Mario in the opposite direction he is going if he is considered inside a block, which can be averted by crouching while jumping into it and, at the exact right moment, pushing left, causing him to be ejected on the other side of the wall.