I tackle LinkedIn Crossclimb #881 in three passes — middles first, ordering second, combo ends last. This 4-letter board runs HEAD → … → TOES with combo clue "The uppermost and lowermost body parts, as in "from my ___ to my ___."".
Middle phase: I work clues in board order — "Necklace part, or drop of sweat" → BEAD; "Word following "brown," "black," or "polar"" → BEAR; "Stout, porter, or pale ale" → BEER; "Creatures who live in hives" → BEES; "Casual shirts named for the 20th letter of the alphabet" → TEES.
Ordering phase: the valid middle chain is BEAD → BEAR → BEER → BEES → TEES. This permutation is the only valid one-letter chain for these answers.
I verify HEAD to BEAD — H→B at the first letter (HEAD → BEAD).
I verify BEAD to BEAR — D→R at the fourth letter (BEAD → BEAR).
I verify BEAR to BEER — A→E at the third letter (BEAR → BEER).
I verify BEER to BEES — R→S at the fourth letter (BEER → BEES).
I verify BEES to TEES — B→T at the first letter (BEES → TEES).
I verify TEES to TOES — E→O at the second letter (TEES → TOES).
Finished chain: HEAD → BEAD → BEAR → BEER → BEES → TEES → TOES. Combo ends HEAD + TOES clicked once ordering locked. Only one middle permutation forms a valid ladder from top to bottom — if ordering feels stuck, recheck a middle answer.