The answer may not surprise you -- but it surprised me.
A few favorites.
Spoilers: they are not good at it.
By popular demand. (From a demanding populace.)
Why do some wizards know no spells?
In a complex world, A > B and B > C may not mean A > C.
Surfing the state space vs. probing the game tree.
Inspired by the card game SET.
Languages. Shapes. Logic. Computation. And a rival to sudoku.