I saw this video recently.

This robot sumo looks like a lot of fun. This is Robot-sumo.

The rule is to push them out of the circle.
Robots are designed to push the other side out of the circle or push the other side down.

How do you want to launch outside the circle? Either push yourself harder or make yourself heavier.

Of course, if it's too light, it won't be able to push others, and if it's too heavy, it won't be able to move itself.

That was a fun race.