The important short Diagonal in same colored Bishop Endgames | Endgame Strategy

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

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