puzzler

Noun

 * 1) A puzzling situation or problem; an enigma.
 * 2)  A video game in which the player is presented with (usually abstract) puzzles to solve.
 * 3) A person who solves puzzles as a hobby.
 * 1) A person who solves puzzles as a hobby.
 * 1) A person who solves puzzles as a hobby.