Warning: You might NOT always win with this because, when you make an explosion in this cheat if you touch the explosion you can get a chance to get KO'd. The cheat: First, go to the "Rules". Next, go to the item switch. Then, set it on "High" and, put all of the items off and just put the "Blast Box" on, "on". Finally, brawl and when 3 blast boxes appear get the blast boxes together with each other (almost like attached) and when the CPU gets near the blast boxes do fire or shoot a bomb on a blast box and step get far away from the blast boxes (to avoid their explosion) and the CPU will get 30, 60, or 90 damage! And, if your lucky they will get KO'd!