As a Beginner, watch out for the Backrank Mate | Chess Tactics | Beginner Level | IM Alex Astaneh

From a channel Lumen includes in full: Chessfactor teaches chess fundamentals (open files, overloaded pieces, endgames, counterplay) in structured, course-like lessons with clear model positions.

A 13-minute video from Chessfactor's catalogue; the title names its topic.

Video by Chessfactor, played through YouTube's embedded player.