Parent class in getcomponent

for logical operations I have class called Brain
and for each individual puzzle i have individual child classes of brain
for example
public class Puzzle 1: Brain {}

now I also have trigger objects, and trigger objects invoke function called “StartBrain” that is part of parent class on a game logic object.
Because I don’t know what will be the name of the script that is attached to logic object (Puzzle 1 or Puzzle 2), I use target.sendmessage(“StartBrain”, Parameters) to invoke this function on an object.

Now I was wondering if it is possible to use polymorphism with something like this.

and target has child class attached to it, so that I can call a child class as a parent class, and invoke the method in parent class.

I know unity uses something similar with colliders, where parent Collider class can be used for collision detection, regardless of whether object has child classes like boxcollider or sphere collider. But I don’t have strong enough grasp of polymorphism theory to figure out how to do it myself.

If anyone can help me with this, it would be awesome

Using events would be an efficient solution.