Boss fights that require using trickery, the environment, or some other non direct assault to defeat them.
Alternate names: Puzzle combat, Puzzle fights
The first video game about Puzzle bosses was released in 1996.
This is not for literal puzzles, but rather fights that are won by unconventional means other than direct confrontation (shooting or hitting the enemy). Often involve environmental combat, environmental puzzles, or otherwise tricking the enemy into defeating itself.