I tackle LinkedIn Crossclimb #866 in three passes — middles first, ordering second, combo ends last. This 5-letter board runs HOUSE → … → COUCH with combo clue "A place to live, and a piece of furniture often found in it.".
Middle phase: I work clues in board order — "Awaken, or stir to action" → ROUSE; "Cosmetics purchase for the cheeks" → ROUGE; "___ and tumble (turbulent)" → ROUGH; "Hard to chew, like low-quality meat" → TOUGH; "Affect one's heartstrings" → TOUCH.
Ordering phase: the valid middle chain is ROUSE → ROUGE → ROUGH → TOUGH → TOUCH. This permutation is the only valid one-letter chain for these answers.
I verify HOUSE to ROUSE — H→R at the first letter (HOUSE → ROUSE).
I verify ROUSE to ROUGE — S→G at the fourth letter (ROUSE → ROUGE).
I verify ROUGE to ROUGH — E→H at the fifth letter (ROUGE → ROUGH).
I verify ROUGH to TOUGH — R→T at the first letter (ROUGH → TOUGH).
I verify TOUGH to TOUCH — G→C at the fourth letter (TOUGH → TOUCH).
I verify TOUCH to COUCH — T→C at the first letter (TOUCH → COUCH).
Finished chain: HOUSE → ROUSE → ROUGE → ROUGH → TOUGH → TOUCH → COUCH. Combo ends HOUSE + COUCH clicked once ordering locked. Only one middle permutation forms a valid ladder from top to bottom — if ordering feels stuck, recheck a middle answer.