Trio

pick any die. i’ll pick one that beats it.

non-transitive dice — first pick is a losing position

Whichever die you pick, another one beats it more often than not, chosen for exactly that reason. Rank the four by who beats whom and the order loops back on itself — there is no single best die, only a circle where each one loses to something else in the set.

Concepts: probability, game-theory.

An interactive you play with one thumb, on Wundr.