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get_daily_challenge — Fetch today's challenge, or a published challenge by UTC date.

get_recent_challenges — Fetch up to seven most recently published challenges in chronological order for a multi-day smoke test.

get_challenge_solution — Fetch the canonical answer and reasoning for a challenge only after its UTC day has closed.

get_challenge_hint — Fetch one strategy hint for a published challenge without revealing its canonical answer.

get_challenge_lesson — Replay a closed challenge with its strategy hint, canonical answer, and reasoning in one call.

evaluate_daily_answer — Deterministically check a JSON answer for today's challenge without copying its challenge ID. The answer is not stored or executed.

evaluate_answer — Deterministically check a JSON answer for a published challenge. The answer is not stored or executed.

evaluate_answers — Deterministically check between one and seven JSON answers in one call. Answers are not stored or executed.