problemist

Why this word is great

PROBLEMIST — [Noun] One who composes chess problems for other players to attempt to solve. From problem ("a puzzle or question proposed for solution") + -ist ("one who practices or is concerned with something"). Unlike "chess player" (a generalist moving pieces on the board) or "solver" (who unpicks the knots others tie), a problemist is an architect of miniature, elegant impossibilities. It is the careful arrangement of rooks and pawns into a three-move trap, the deliberate sacrifice of a queen to force a checkmate in five, the silent satisfaction of watching a mind stumble upon the precise sequence you planted—a god of small, solvable worlds.