Case file LinkedIn Crossclimb #912: 4-letter ladder, 5 middle exhibits, combo prompt "Two verbs associated with computer files: one to store and one to retrieve.". Endpoints: SAVE (top) and LOAD (bottom).
Middle phase answers: "Often explorable underground space" = CAVE; "Small coastal area with a narrow entrance" = COVE; "Center of an apple" = CORE; "Flexible accessory used for charging electronics" = CORD; "Someone who rules over a domain" = LORD.
Ordering phase: the valid middle chain is CAVE → COVE → CORE → CORD → LORD. This permutation is the only valid one-letter chain for these answers.
Evidence link: SAVE → CAVE. S→C at the first letter (SAVE → CAVE).
Evidence link: CAVE → COVE. A→O at the second letter (CAVE → COVE).
Evidence link: COVE → CORE. V→R at the third letter (COVE → CORE).
Evidence link: CORE → CORD. E→D at the fourth letter (CORE → CORD).
Evidence link: CORD → LORD. C→L at the first letter (CORD → LORD).
Evidence link: LORD → LOAD. R→A at the third letter (LORD → LOAD).
Verdict: SAVE → CAVE → COVE → CORE → CORD → LORD → LOAD satisfies every one-letter constraint. The combo clue "Two verbs associated with computer files: one to store and one to retrieve." describes both end words together — "SAVE" and "LOAD" each differ by one letter from their adjacent middle rungs and satisfy the shared top+bottom prompt.