New‑hampshire‑capital‑city‑hobby‑meetup‑circles‑around‑Concord‑rotate‑their‑mahjong‑game‑night‑venues‑between‑public‑community‑rooms,Professional mahjong set‑local‑café‑business‑spaces‑and‑the‑private‑homes‑of‑willing‑group‑member‑host‑volunteers‑on‑a‑month‑to‑month‑basis.