[ExarKun666]

That's not half bad, good idea there. Another thing you could do is instead of that just have a competition where you basically have to go to the opponents side of the field, where you pick up an 'order' that they have written down between three objects, and there would be 3 different colored plated on the opponents wall, each corresponding to a different food, yo then get one of those colored (metal) plates go over to your side where the three pieces are and then carry them to the opponent's side, and which ever team delivers all three the fastest wins, so your robot can have two strategies 1) defend by blocking other bots from either getting one of the colored plates or getting the food and brining it back or 2) play offense, and actually carry the items back and forth.