The rules for 2018:
The arena holds 12 cylinders and 12 cubes, with three circles and three squares to place them.
You earn one point for placing an object in the correct shape, touching the surface. You lose one point for putting the wrong object in a shape, even if it is just above the surface and not touching.
You earn two points when your robot turns off automatically after 3 minutes when the round ends.
You may not eject objects from the arena, or attempt to disable your opponent.
Your robot must fit in a 1 foot cubic box at the beginning of the round.
See the schedule at:
http://hades.mech.northwestern.edu/index.php/Northwestern_Design_Competition#DC2018